A data acquisition system for a lincoln digital welder

Abstract

This application relates to a Lincoln submerged arc welding digital welding machine data acquisition system, comprising: a digital welding machine; a protocol connector connected to the digital welding machine via a signal cable; a PLC connected to the protocol connector via a protocol converter; and an industrial control computer connected to the PLC via a network cable. By setting up a protocol connector and a protocol converter, the PLC can connect to the digital welding machine via the protocol connector, protocol converter, and signal cable. Parameters such as current, arc voltage, and frequency of the digital welding machine can be transmitted back to the PLC via the protocol connector, protocol converter, and signal cable. The industrial control computer can acquire relevant data from the PLC during the welding process of the digital welding machine via the network cable and store it in an SQL database. The enterprise's MES system can connect to the industrial control computer via a wireless or wired network to obtain the welding process data from the SQL database within the industrial control computer, generate a quality certificate, and provide it to the customer's supervisor for random inspection. This solves the technical problem that the process data of the digital welding machine cannot be read by the enterprise's MES system.

Description

Technical Field

[0001] This application relates to the field of electrical automation technology, specifically to a Lincoln submerged arc welding digital welding machine data acquisition system. Background Technology

[0002] As manufacturers raise their performance requirements for welding equipment in the submerged arc welding industry of steel pipes, Lincoln's digital submerged arc welding machines have been widely adopted in China. However, the data stored in the data acquisition system of these Lincoln digital welding machines cannot be accessed by third parties and can only be opened and viewed using Lincoln's software. This makes it impossible for the process data of the digital welding machine to be read by the enterprise's MES (manufacturing execution system), making it impossible to generate welding process quality certificates for each steel pipe and making it difficult to trace the welding quality.

[0003] Therefore, it is necessary to design a new Lincoln submerged arc welding digital welding machine data acquisition system to overcome the above problems. Summary of the Invention

[0004] This application provides a Lincoln submerged arc welding digital welding machine data acquisition system, which can solve the technical problem that the process data of the digital welding machine cannot be read by the enterprise MES.

[0005] In a first aspect, embodiments of this application provide a Lincoln submerged arc welding digital welding machine data acquisition system, which includes: a digital welding machine; a protocol connector, the protocol connector being connected to the digital welding machine via a signal connection cable; a PLC, the PLC being connected to the protocol connector via a protocol converter; and an industrial control computer, the industrial control computer being connected to the PLC via a network cable.

[0006] In conjunction with the first aspect, in one embodiment, the Lincoln submerged arc welding digital welding machine data acquisition system further includes an operating console, which is connected to the PLC via a signal connection line, and the operating console is equipped with a welding machine start button.

[0007] In conjunction with the first aspect, in one embodiment, the protocol connector is a DeviceNet protocol connector, which is connected to the DeviceNet interface of the digital welding machine via a signal cable; the protocol converter is a DeviceNet / PN converter, the DeviceNet interface of the protocol converter is connected to the protocol connector via a signal cable, and the PN interface of the protocol converter is connected to the PLC via a network cable.

[0008] In conjunction with the first aspect, in one embodiment, the protocol converter is connected to a first terminating resistor via a signal connection line.

[0009] In conjunction with the first aspect, in one embodiment, the protocol connector is connected to a second terminating resistor via a signal connection line.

[0010] In conjunction with the first aspect, in one embodiment, the Lincoln submerged arc welding digital welding machine data acquisition system includes multiple digital welding machines and multiple protocol connectors, with the multiple digital welding machines connected one-to-one with the multiple protocol connectors via signal connection lines.

[0011] In conjunction with the first aspect, in one embodiment, the plurality of said protocol connectors are interconnected via signal connection lines, and one of said protocol connectors is connected to the protocol converter via a signal connection line.

[0012] In conjunction with the first aspect, in one embodiment, the plurality of digital welding machines includes a first digital welding machine, a second digital welding machine, and a third digital welding machine, and the plurality of protocol connectors includes a first protocol connector, a second protocol connector, and a third protocol connector; the first protocol connector is connected to the first digital welding machine via a signal connection line, the second protocol connector is connected to the second digital welding machine via a signal connection line, and the third protocol connector is connected to the third digital welding machine via a signal connection line; the first protocol connector is connected to the second protocol connector via a signal connection line, the second protocol connector is connected to the third protocol connector via a signal connection line, the third protocol connector is connected to the protocol converter via a signal connection line, and the first protocol connector is connected to a second terminating resistor via a signal connection line.

[0013] In conjunction with the first aspect, in one implementation, the PLC includes a CPU and a DI / DO module.

[0014] Secondly, embodiments of this application provide a Lincoln submerged arc welding digital welding machine data acquisition system, which includes: a protocol connector for connecting to a digital welding machine via a signal connection cable; a PLC for connecting to the protocol connector via a protocol converter; and an industrial control computer for connecting to the PLC via a network cable.

[0015] The beneficial effects of the technical solutions provided in this application include:

[0016] By setting up protocol connectors and protocol converters, the PLC can connect to the digital welding machine via these connectors, converters, and signal cables. Parameters such as current, arc voltage, and frequency of the digital welding machine can be transmitted back to the PLC through these connectors. The industrial control computer can obtain relevant data from the PLC's digital welding process via a network cable and store it in an SQL database. The enterprise's MES system can connect to the industrial control computer via a wireless or wired network to obtain the welding process data from the SQL database within the industrial control computer, generate quality certificates, and provide them to customer supervisors for spot checks. This solves the technical problem that the process data of the digital welding machine could not be read by the enterprise's MES system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the architecture of a Lincoln submerged arc welding digital welding machine data acquisition system provided in an embodiment of this application.

[0019] In the picture:

[0020] 1. Digital welding machine; 11. First digital welding machine; 12. Second digital welding machine; 13. Third digital welding machine;

[0021] 2. Protocol header; 21. First protocol header; 22. Second protocol header; 23. Third protocol header;

[0022] 3. Protocol converter; 4. PLC; 5. Industrial computer; 6. Control console;

[0023] 7. First terminating resistor; 8. Second terminating resistor. Detailed Implementation

[0024] 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 with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0025] This application provides a Lincoln submerged arc welding digital welding machine data acquisition system, which can solve the technical problem that the process data of digital welding machines cannot be read by the enterprise MES.

[0026] See Figure 1 As shown in the figure, a Lincoln submerged arc welding digital welding machine data acquisition system provided in this application embodiment may include: a digital welding machine 1; a protocol connector 2, the protocol connector 2 being connected to the digital welding machine 1 via a signal connection cable; a PLC 4, the PLC 4 being connected to the protocol connector 2 via a protocol converter 3; and an industrial control computer 5, the industrial control computer 5 being connected to the PLC 4 via a network cable.

[0027] In this embodiment, the digital welding machine 1 is preferably a Lincoln submerged arc welding digital welding machine 1. Of course, other digital welding machines 1 can also be selected according to actual needs. The protocol connector 2 is connected to the digital welding machine 1 via a signal connection cable, and the protocol connector 2 is also connected to the protocol converter 3 via a signal connection cable. The protocol converter 3 is connected to the PLC4 via a network cable. In this embodiment, the PLC4 is a logic programming controller, which may include a CPU and a DI / DO module. The CPU model in the logic programming controller (PLC4) is a Siemens 315-2PN / DP network CPU; the DI / DO module model in the logic programming controller (PLC4) is a 6ES7323-1BL00-0AA0 type. Of course, in other embodiments, the CPU and DI / DO module may also use other models, which are not limited here.

[0028] In this embodiment, by setting up a protocol connector 2 and a protocol converter 3, the PLC 4 can be connected to the digital welding machine 1 through the protocol connector 2, the protocol converter 3, and the signal connection line. The parameters such as current, arc voltage, and frequency of the digital welding machine 1 can be transmitted back to the PLC 4 through the protocol connector 2, the protocol converter 3, and the signal connection line. The industrial control computer 5 can obtain relevant data of the welding process of the digital welding machine 1 from the PLC 4 through the network cable and store it in the SQL database. After each steel pipe is welded, the operator inputs the relevant pipe number into the industrial control computer 5 and binds it to the SQL database. The enterprise's MES system can connect to the industrial control computer 5 through a wireless or wired network to obtain the welding process data corresponding to each pipe number in the SQL database of the industrial control computer 5, generate corresponding quality certificates, and provide them to the customer's supervisor for spot checks. This solves the technical problem that the process data of the digital welding machine 1 cannot be read by the enterprise's MES.

[0029] Furthermore, in one embodiment, the Lincoln submerged arc welding digital welding machine data acquisition system also includes an operating console 6, which is connected to the PLC 4 via a signal connection cable. The operating console 6 is equipped with a welding machine start button. In this embodiment, when production begins, the welding machine start button on the operating console 6 is pressed. After the PLC 4 receives the start trigger signal, it pushes the start signal to the digital welding machine 1 through the protocol converter 3, the protocol connector 2, and the signal connection cable, thus activating the arc output of the digital welding machine 1. During the welding process, parameters such as current, arc voltage, and frequency of the digital welding machine 1 can be transmitted back to the PLC 4 through the protocol connector 2, the protocol converter 3, and the signal connection cable. The industrial control computer 5 can obtain relevant data from the PLC 4 during the welding process of the digital welding machine 1 via a network cable and store it in an SQL database. After each steel pipe is welded, the operator inputs the relevant pipe number into the industrial control computer 5 and binds it to the SQL database.

[0030] Preferably, in this embodiment, the protocol connector 2 is a DeviceNet protocol connector 2, which is connected to the DeviceNet interface of the digital welding machine 1 via a signal cable; the protocol converter 3 is a DeviceNet / PN converter, with its DeviceNet interface connected to the protocol connector 2 via a signal cable, and its PN interface connected to the PLC 4 via a network cable. In this embodiment, the protocol connector 2 first transmits data from the digital welding machine 1 to the protocol converter 3. At this time, the data transmitted through the protocol connector 2 is still the signal type extracted from the digital welding machine 1, which cannot be read by the PLC 4. Therefore, the protocol converter 3 needs to be connected after the protocol connector 2 to convert the DeviceNet data into the PN data type that can be read by the PLC 4. Then, the PLC 4 transmits the data read from the digital welding machine 1 to the industrial control computer 5, thereby realizing the data acquisition function.

[0031] Furthermore, in one embodiment, the protocol converter 3 is connected to a first terminating resistor 7 via a signal connection line. In this embodiment, connecting the protocol converter 3 to the first terminating resistor 7 helps to prevent interference in communication transmission, thus avoiding communication errors or data transmission omissions.

[0032] Preferably, the protocol connector 2 is connected to a second terminating resistor 8 via a signal connection line. In this embodiment, the protocol connector 2 can also be connected to the second terminating resistor 8 via a signal connection line. The second terminating resistor 8 can also play an anti-interference role in communication transmission, avoiding communication errors or data transmission omissions.

[0033] Furthermore, in some embodiments, the Lincoln submerged arc welding digital welding machine data acquisition system includes multiple digital welding machines 1 and multiple protocol connectors 2. The multiple digital welding machines 1 are connected to the multiple protocol connectors 2 one-to-one via signal connection lines. In this embodiment, the entire Lincoln submerged arc welding digital welding machine data acquisition system may have two or more digital welding machines 1 (e.g., three). Each digital welding machine 1 is independent of the others. Each digital welding machine 1 is connected to a protocol connector 2 via a signal connection line. Each protocol connector 2 can be independently connected to a protocol converter 3, or it can be connected to the protocol converter 3 through one of the protocol connectors 2.

[0034] In other embodiments, only one digital welding machine 1 and one protocol connector 2 may be provided.

[0035] Based on the above technical solution, in one embodiment, multiple protocol connectors 2 are interconnected via signal connection lines, and one of the protocol connectors 2 is connected to the protocol converter 3 via a signal connection line. Preferably, this embodiment connects one of the protocol connectors 2 to the protocol converter 3, meaning that multiple protocol connectors 2 are connected sequentially to communicate with each other. Then, only one protocol connector 2 is connected to the protocol converter 3, allowing all multiple protocol connectors 2 to communicate with the protocol converter 3. Thus, the protocol converter 3 does not need to have multiple interfaces.

[0036] Preferred, see Figure 1 As shown, the plurality of digital welding machines 1 include a first digital welding machine 11, a second digital welding machine 12, and a third digital welding machine 13, and the plurality of protocol connectors 2 include a first protocol connector 21, a second protocol connector 22, and a third protocol connector 23; the first protocol connector 21 is connected to the first digital welding machine 11 via a signal connection line, the second protocol connector 22 is connected to the second digital welding machine 12 via a signal connection line, and the third protocol connector 23 is connected to the third digital welding machine 13 via a signal connection line; the first protocol connector 21 is connected to the second protocol connector 22 via a signal connection line, the second protocol connector 22 is connected to the third protocol connector 23 via a signal connection line, the third protocol connector 23 is connected to the protocol converter 3 via a signal connection line, and the first protocol connector 21 is connected to a second terminating resistor 8 via a signal connection line.

[0037] In this embodiment, the entire Lincoln submerged arc welding digital welding machine data acquisition system is described using an example of setting up 3 digital welding machines 1 and 3 protocol connectors 2. All 3 protocol connectors 2 adopt the DeviceNet protocol connector 2. The 3 digital welding machines 1 are a first digital welding machine 11, a second digital welding machine 12, and a third digital welding machine 13. The DeviceNet interface of the first digital welding machine 11 is connected to the left end of the first protocol connector 21 through a signal connection cable. The DeviceNet interface of the second digital welding machine 12 is connected to the upper end of the second protocol connector 22 through a signal connection cable. The DeviceNet interface of the third digital welding machine 13 is connected to the upper end of the third protocol connector 23 through a signal connection cable.

[0038] The right end of the first protocol connector 21 is connected to the left end of the second protocol connector 22 via a signal cable. The right end of the second protocol connector 22 is connected to the left end of the third protocol connector 23 via a signal cable. The upper end of the first protocol connector 21 is connected to the second terminating resistor 8 via a signal cable. The right end of the third protocol connector 23 is connected to the devicenet interface of the protocol converter 3 via a signal cable. The devicenet interface of the protocol converter 3 is connected to the first terminating resistor 7 via a signal cable. The PN interface of the protocol converter 3 is connected to the PLC 4 via a network cable. The PLC 4 is connected to the operator console 6 via a signal cable and to the industrial computer 5 via a network cable.

[0039] In the above embodiment, the upper end of the first protocol connector 21 is connected to the second terminating resistor 8 via a signal connection line, and the devicenet interface of the protocol converter 3 is connected to the first terminating resistor 7 via a signal connection line. These two terminating resistors can play an anti-interference role in communication transmission. If either terminating resistor is not connected, it may cause communication errors or data transmission omissions.

[0040] The following is combined Figure 1 Further explanation of the specific usage and operation methods:

[0041] See Figure 1 When production begins, the "Welding Machine Start" button on the control panel 6 is pressed. After receiving the start trigger signal, PLC4 pushes the start signal to the three digital welding machines 1 through the protocol converter 3, three protocol connectors 2, and signal connection lines, activating the arc output of the three digital welding machines 1. During the welding process, parameters such as current, arc voltage, and frequency of the three digital welding machines 1 can be transmitted back to PLC4 through the three protocol connectors 2, protocol converter 3, and signal connection lines. Meanwhile, the industrial control computer 5 can obtain relevant data from the welding process of the digital welding machines 1 on PLC4 via a network cable and store it in the SQL database. After each steel pipe is welded, the operator inputs the relevant pipe number into the industrial control computer 5 and binds it to the SQL database.

[0042] During the welding process, the PLC 4 can also monitor the parameters of the welding process. If there is any abnormality, a red indicator light on the software interface of the industrial control computer 5 will flash for warning.

[0043] The enterprise's MES system can be connected to this industrial control computer 5 through a wireless network or a wired network to obtain the welding process data corresponding to each pipe number in the SQL database in this industrial control computer 5, and form corresponding quality certificates for the supervision and random inspection by customers.

[0044] The welding machine data collected and stored by the Lincoln submerged arc welding digital welding machine data acquisition system provided in the embodiment of the present application supports third-party reading, allowing the enterprise's MES system to obtain the data of this data acquisition system, so as to form a quality certificate for the steel pipe welding process, and can solve the quality traceability problem caused by the fact that the welding machine acquisition software data provided by Lincoln Company does not support third-party reading.

[0045] The embodiment of the present application also provides a Lincoln submerged arc welding digital welding machine data acquisition system, which may include: a protocol connector 2, and the protocol connector 2 is used to connect the digital welding machine 1 through a signal connection line; a PLC 4, and the PLC 4 is connected to the protocol connector 2 through a protocol converter 3; an industrial control computer 5, and the industrial control computer 5 is connected to the PLC 4 through a network cable.

[0046] For the Lincoln submerged arc welding digital welding machine data acquisition system in this embodiment, except for the digital welding machine 1, the Lincoln submerged arc welding digital welding machine data acquisition system provided in any of the above embodiments can be adopted, and details are not described herein again.

[0047] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. Unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A data acquisition system for a Lincoln submerged arc welding digital welding machine, characterized in that, It includes: Digital welding machine (1); Protocol connector (2), which is connected to the digital welding machine (1) via a signal connection line; PLC (4), wherein the PLC (4) is connected to the protocol connector (2) via a protocol converter (3); An industrial computer (5) is connected to the PLC (4) via a network cable.

2. The Lincoln submerged arc welding digital welding machine data acquisition system as described in claim 1, characterized in that, The Lincoln submerged arc welding digital welding machine data acquisition system also includes an operating console (6), which is connected to the PLC (4) via a signal connection line. The operating console (6) is equipped with a welding machine start button.

3. The Lincoln submerged arc welding digital welding machine data acquisition system as described in claim 1, characterized in that, The protocol connector (2) is a devicenet protocol connector (2), and the protocol connector (2) is connected to the devicenet interface of the digital welding machine (1) through a signal connection line; The protocol converter (3) is a devicenet / pn converter. The devicenet interface of the protocol converter (3) is connected to the protocol connector (2) through a signal connection line, and the pn interface of the protocol converter (3) is connected to the PLC (4) through a network cable.

4. The Lincoln submerged arc welding digital welding machine data acquisition system as described in claim 1, characterized in that, The protocol converter (3) is connected to a first terminating resistor (7) via a signal connection line.

5. The Lincoln submerged arc welding digital welding machine data acquisition system as described in claim 1 or 4, characterized in that, The protocol connector (2) is connected to a second terminating resistor (8) via a signal connection line.

6. The Lincoln submerged arc welding digital welding machine data acquisition system as described in claim 1, characterized in that, The Lincoln submerged arc welding digital welding machine data acquisition system includes multiple digital welding machines (1) and multiple protocol connectors (2). The multiple digital welding machines (1) are connected to the multiple protocol connectors (2) one by one through signal connection lines.

7. The Lincoln submerged arc welding digital welding machine data acquisition system as described in claim 6, characterized in that, The multiple protocol connectors (2) are interconnected by signal connection lines, and one of the protocol connectors (2) is connected to the protocol converter (3) by a signal connection line.

8. The Lincoln submerged arc welding digital welding machine data acquisition system as described in claim 7, characterized in that, The plurality of digital welding machines (1) include a first digital welding machine (11), a second digital welding machine (12) and a third digital welding machine (13), and the plurality of protocol connectors (2) include a first protocol connector (21), a second protocol connector (22) and a third protocol connector (23); The first protocol connector (21) is connected to the first digital welding machine (11) via a signal connection line, the second protocol connector (22) is connected to the second digital welding machine (12) via a signal connection line, and the third protocol connector (23) is connected to the third digital welding machine (13) via a signal connection line. The first protocol connector (21) is connected to the second protocol connector (22) via a signal connection line, the second protocol connector (22) is connected to the third protocol connector (23) via a signal connection line, the third protocol connector (23) is connected to the protocol converter (3) via a signal connection line, and the first protocol connector (21) is connected to a second terminating resistor (8) via a signal connection line.

9. The Lincoln submerged arc welding digital welding machine data acquisition system as described in claim 1, characterized in that, The PLC (4) includes a CPU and a DI / DO module.

10. A Lincoln submerged arc welding digital welding machine data acquisition system, characterized in that, It includes: Protocol connector (2), the protocol connector (2) is used to connect to digital welding machine (1) via signal connection line; PLC (4), wherein the PLC (4) is connected to the protocol connector (2) via a protocol converter (3); An industrial computer (5) is connected to the PLC (4) via a network cable.

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