CN114393283A

CN114393283A - Multifunctional alternating-current argon arc welding machine

Info

Publication number: CN114393283A
Application number: CN202210127122.1A
Authority: CN
Inventors: 尤志春; 孙慧博; 胡星
Original assignee: SHANGHAI WTL WELDING EQUIPMENT MANUFACTURE CO Ltd
Current assignee: SHANGHAI WTL WELDING EQUIPMENT MANUFACTURE CO Ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-04-26

Abstract

The invention provides a multifunctional alternating-current argon arc welding machine which comprises a main control module (101), a multifunctional waveform generator (102), an interaction module (103) and a power supply module (104), wherein the main control module (101) is electrically connected with the multifunctional waveform generator (102) and the interaction module (103); the main control module (101) generates a second signal according to the first signal transmitted by the interaction module (103), and transmits the second signal to the multifunctional waveform generator (102); the multifunctional waveform generator (102) generates a corresponding arc initiation waveform from the second signal; the power supply module (104) is used for supplying power to the main control module (101), the multifunctional waveform generator (102) and the interaction module (103); the multifunctional alternating-current argon arc welding machine can quickly provide welding waveforms meeting the use requirements for users, and meets the multifunctional requirements of the users.

Description

Multifunctional alternating-current argon arc welding machine

Technical Field

The invention relates to the technical field of welding, in particular to a multifunctional alternating-current argon arc welding machine.

Background

The argon arc welding machine is a machine using argon arc welding and adopts a high-voltage breakdown arcing mode. Argon arc welding, i.e. tungsten inert gas arc welding, refers to a welding method using industrial tungsten or active tungsten as an infusible electrode and inert gas (argon) as protection, and is called TIG for short. The arc starting of argon arc welding adopts a high-voltage breakdown arc starting mode, firstly, high-frequency high voltage is applied between an electrode needle (tungsten needle) and a workpiece to break through argon gas so as to enable the argon gas to be conductive, then continuous current is supplied, and the stability of electric arc is ensured. The working principle of the argon arc welding machine in the aspects of a main loop, an auxiliary power supply, a driving circuit, a protection circuit and the like is the same as that of a manual arc welding machine.

However, the current output waveform of the conventional alternating current argon arc welding machine in the alternating current part is only sine wave, and meanwhile, the conventional alternating current argon arc welding machine is single in functionality and difficult to meet the welding requirements of multiple scenes.

Disclosure of Invention

In order to at least solve the technical problems in the background art, the invention provides a multifunctional alternating current argon arc welding machine.

The invention provides a multifunctional alternating-current argon arc welding machine, which comprises a main control module (101), a multifunctional waveform generator (102), an interaction module (103) and a power supply module (104), wherein the main control module (101) is electrically connected with the multifunctional waveform generator (102) and the interaction module (103);

the main control module (101) generates a second signal according to the first signal transmitted by the interaction module (103), and transmits the second signal to the multifunctional waveform generator (102);

the multifunctional waveform generator (102) generates a corresponding arc initiation waveform from the second signal;

the power supply module (104) is used for supplying power to the main control module (101), the multifunctional waveform generator (102) and the interaction module (103).

Preferably, the first signal is a current intensity value.

Preferably, the interaction module (103) is any one of a mechanical knob, a slide switch, a button, a numeric keyboard and a touch screen.

Preferably, the multifunctional waveform generator (102) comprises a square wave generator, a triangular wave generator, a trapezoidal wave generator and a sine wave generator.

Preferably, the multi-function waveform generator (102) generates an arc initiation waveform corresponding to a square wave, a triangular wave, a trapezoidal wave, or a sinusoidal wave by a dot method.

Preferably, the second signal is also used to trigger the multi-function waveform generator (102) to sequentially generate a plurality of arc initiation waveforms.

Preferably, the multifunctional alternating current argon arc welding machine further comprises a camera module (105), and the first signal is a welding site image shot by the camera module (105);

the main control module (101) generates a second signal according to the first signal transmitted by the interaction module (103), including:

the main control module (101) determines a welding object and an auxiliary material according to the welding site image, determines a welding task according to the welding object and the auxiliary material, determines a target waveform group according to the welding task, and generates the second signal according to the target waveform;

the target waveform group comprises at least one of square waves, triangular waves, trapezoidal waves and sine waves and corresponding serial numbers.

Preferably, the interaction module (103) further comprises a display module;

the main control module (101) is further configured to send the target waveform group to the interaction module (103) for display, and generate the second signal according to the target waveform after receiving a confirmation signal sent by the interaction module (103).

Preferably, before the master control module (101) generates the second signal according to the target waveform, the method further includes:

and the main control module (101) determines the diameter of the electrode according to the welding field image and judges whether the diameter of the electrode is matched with a target waveform of a first sequence number in a target waveform/target waveform group.

Preferably, the camera module (105) is further configured to acquire a welding point image and transmit the welding point image to the main control module (101);

and the main control module (101) detects the contact condition of the electrode and a welding object according to the welding point image, and when the contact of the electrode and the welding object is detected, current corresponding to the target waveform is maintained according to the target waveform until the electrode is disconnected from the welding object.

According to the multifunctional alternating-current argon arc welding machine, a user can send a waveform selection signal to the main control module (101) through the interaction module (103), the main control module (101) can judge a target waveform of the user, and accordingly a second signal is generated to trigger the multifunctional waveform generator (102) to generate a corresponding arc-induced waveform, so that a welding waveform meeting the use requirement can be rapidly provided for the user, and the multifunctional requirement of the user is met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a multifunctional AC argon arc welding machine according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a waveform generated by a dot method according to an embodiment of the present invention;

FIG. 3 is another schematic structural diagram of a multifunctional AC argon arc welding machine according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the product of the present invention is usually placed in when used, the description is only for convenience of describing the present invention and simplifying the description, but the indication or suggestion that the system or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, cannot be understood as limiting the present invention.

The terms "first," "second," "third," and "fourth," etc. in the description and in the claims of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first input, the second input, the third input, the fourth input, etc. are used to distinguish between different inputs, rather than to describe a particular order of inputs.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the embodiments of the present invention, unless otherwise specified, "a plurality" means two or more, for example, a plurality of processing units means two or more processing units; plural elements means two or more elements, and the like.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Example one

Referring to fig. 1, fig. 1 is a schematic structural diagram of a multifunctional ac argon arc welding machine according to an embodiment of the present invention. As shown in fig. 1, the multifunctional alternating current argon arc welding machine according to the embodiment of the present invention includes a main control module (101), a multifunctional waveform generator (102), an interaction module (103), and a power supply module (104), wherein the main control module (101) is electrically connected with the multifunctional waveform generator (102) and the interaction module (103);

In the embodiment of the invention, as described in the background art, the current output waveform of the alternating current argon arc welding machine in the prior art is only a sine wave, and the welding requirements of users cannot be met. In view of the above, the invention provides a multifunctional alternating-current argon arc welding machine, a user can send a waveform selection signal to a main control module (101) through an interaction module (103), the main control module (101) can determine a target waveform of the user, and accordingly a second signal is generated to trigger a multifunctional waveform generator (102) to generate a corresponding arc-induced waveform, so that a welding waveform meeting use requirements can be quickly provided for the user, and the multifunctional requirements of the user are met.

Preferably, the first signal is a current intensity value.

In the embodiment of the invention, a user can regulate and control the current intensity value transmitted to the main control module (101) through the interaction module (103), and the main control module (101) can determine the target waveform of the user through table look-up according to the current intensity value.

It should be noted that the current intensity value in the present invention may be an ampere value, and a corresponding relationship table between different ampere values and waveforms may be pre-established, and the corresponding relationship table may be pre-stored in the main control module (101). The waveform and the ampere value correspond to each other in a current intensity range, that is, the ampere value in a certain interval corresponds to a certain waveform, so that the requirement on the accuracy of the current intensity value input by a user can be reduced.

In the embodiment of the invention, the multifunctional alternating current argon arc welding machine can be provided with various types of interaction modules (103), such as a mechanical knob, a sliding switch, a button, a numeric keyboard, a touch screen and the like, so that the input habit of a user can be adapted, and more excellent use experience is provided for the user.

In the embodiment of the invention, the multifunctional waveform generator comprises four independent waveform generators of square wave, triangular wave, trapezoidal wave and sine wave respectively, namely the multifunctional waveform is output by adopting a hardware mode. The alternating-current square wave has the advantages of strong output capacity and strong penetrating power and is suitable for various welding occasions; triangular wave: the alternating-current triangular wave as the current output waveform has the advantages that the output capacity is relatively weak, so that the welding material is more suitable for the occasions of welding thin plates, and the welding material is effectively protected from being damaged and deformed; trapezoidal wave: the alternating-current trapezoidal wave has the advantages of output capacity close to square wave, strong penetrating power and small current loss on long-line welding occasions; sine wave: the advantage of an ac sine wave as the current output waveform is that it is softer and quieter during welding than other waveforms. Therefore, the welding experience is greatly improved by providing the user with the selection of various waveforms, and in addition, the implementation cost of the welding machine can be effectively reduced.

In the embodiment of the invention, besides the hardware implementation mode, the invention also provides a software implementation mode, namely the multifunctional waveform generator (102) generates arc-induced waveforms corresponding to square waves, triangular waves, trapezoidal waves and sine waves by a dot-drawing method.

Examples are as follows:

taking a triangular wave as an example, the period, frequency, duty ratio and precision of the waveform need to be determined before the code is written. Referring to fig. 2, an enlarged view of one cycle is shown. In the figure, 0-4 represent the division points of the oscillogram, the oscillogram is divided into 4 sections, and the novel oscillogram can be realized by respectively giving corresponding given values in the four sections. T is 1/f, negative half cycle time is duty cycle T, positive half cycle time is T-negative half cycle time, and the time of the switching point (0-1) is determined by the fall time of the maximum current to the switching point current.

It should be noted that:

1. the precision is the minimum time interval of a given value, and simultaneously the precision also determines the minimum period;

2. the given value calculation method comprises the following steps: 1) generating matrix points by signal generator software; 2) the corresponding point given value is a given value (matrix corresponding point/matrix point maximum).

Preferably, the welding requirements are complex and varied, and a welding process is typically divided into multiple stages, with the waveform accordingly requiring variation in the stages of the welding process. The present invention further provides that the second signal may include a plurality of instructions, whereby the multi-function waveform generator (102) may sequentially generate a plurality of arc initiation waveforms.

It should be noted that, a user can input a special current intensity value through the interaction module (103), the current intensity value can correspond to the waveform groups with the generation order, and the correspondence relationship between the plurality of waveform groups and the special current intensity value can be added in the correspondence relationship table. Thus, the solution of the invention can cope with a variety of complex welding tasks.

In the embodiment of the present invention, it is convenient for the user to input a single waveform, but when there are many waveforms, it is difficult for the user to memorize the corresponding relationship between the plurality of waveforms/waveform sets and the current intensity value, which increases the difficulty of inputting. In view of this, as shown in fig. 3, the invention further provides a camera module (105) for the multifunctional ac argon arc welding machine, and a welding site image shot by the camera module (105) can determine a current welding task to be performed, so that a target waveform group corresponding to the welding task can be determined, thereby realizing rapid and automatic input of waveform selection information and further improving user experience.

Preferably, the interaction module (103) further comprises a display module;

In the embodiment of the invention, the prediction identification of the welding task through the welding field image has certain misjudgment probability, so the invention further sends the determined target waveform group to the interaction module (103) for display for the user to confirm, and a second signal is generated when the user confirms; if the user thinks the identification is wrong, the user can receive the correction and generate a second signal according to the correction result. Therefore, the scheme of the invention can realize the quick and automatic input of the waveform and reduce the manual operation workload of the user.

It should be noted that, the recognition of the welding object and the auxiliary material can be realized through the depth recognition model, that is, a training set is established by collecting image data of the welding object and the auxiliary material, the depth recognition model is trained by using the training set, and the accurate recognition of the welding object and the auxiliary material can be realized through the trained depth recognition model. Wherein, the welding object can be steel plate, nonferrous metal, etc., and the auxiliary material can be welding wire, etc.

and the main control module (101) determines the diameter of the electrode according to the welding field image and judges whether the diameter of the electrode is matched with the waveform of the first sequence number in the target waveform/target waveform group.

In embodiments of the invention, it is desirable that the diameter of the electrodes be matched when different waveforms (especially different waveform voltages/currents) are used, otherwise it is easy to evaporate the arc or to destroy the electrodes. Therefore, the main control module (101) is arranged to determine the diameter of the welding wire through the welding field image, and the second signal is generated according to the target waveform when the diameter of the welding wire is matched with the corresponding waveform. Wherein the corresponding waveform may be a single waveform or the first waveform in the template waveform set.

Additionally, when the wire diameter does not match the waveform, a prompt may be output to a user through, for example, a display module in the interaction module (103). In order to further enhance the use experience, the main control module (101) may be further configured to indicate the wire diameter suitable for the corresponding waveform to the user when receiving the current intensity value input by the user through the interaction module (103), and the indication may be any audible, visual or tactile signal, or a combination thereof, which is not limited by the invention.

In the embodiment of the invention, the image of the welding point is acquired by the camera module (105), and the main control module (101) can analyze the contact condition of the electrode and the welding object and maintain the contact between the electrode and the welding object, namely the current in the welding stage. Therefore, the scheme of the invention can realize automatic output of welding current, not only can improve the use convenience, but also can avoid welding danger. Of course, the camera module (105) in the invention should have a strong light filter, so as to be beneficial to analyzing the contact condition of the welding point.

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input system, and at least one output system.

Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing system, such that the program codes, when executed by the processor or controller, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display system (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing system (e.g., a mouse or a trackball) by which a user can provide input to the computer. Other kinds of systems may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), Wide Area Networks (WANs), and the Internet.

The computer system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server may be a cloud server, a server of a distributed system, or a server with a combined blockchain.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved, and the present disclosure is not limited herein.

The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A multifunctional alternating current argon arc welding machine is characterized in that: the multifunctional waveform generator comprises a main control module (101), a multifunctional waveform generator (102), an interaction module (103) and a power supply module (104), wherein the main control module (101) is electrically connected with the multifunctional waveform generator (102) and the interaction module (103);

2. The multifunctional alternating-current argon arc welding machine according to claim 1, characterized in that: the first signal is a current intensity value.

3. The multifunctional alternating-current argon arc welding machine according to claim 1, characterized in that: the interaction module (103) is any one of a mechanical knob, a sliding switch, a button, a numeric keyboard and a touch screen.

4. The multifunctional alternating-current argon arc welding machine according to claim 1, characterized in that: the multifunctional waveform generator (102) comprises a square wave generator, a triangular wave generator, a trapezoidal wave generator and a sine wave generator.

5. The multifunctional alternating-current argon arc welding machine according to claim 1, characterized in that: the multifunctional waveform generator (102) generates arc initiation waveforms corresponding to square waves, triangular waves, trapezoidal waves and sine waves by a point tracing method.

6. The multifunctional alternating current argon arc welding machine according to claim 4 or 5, characterized in that: the second signal is also used to trigger the multi-function waveform generator (102) to sequentially generate a plurality of arc initiation waveforms.

7. The multifunctional alternating-current argon arc welding machine according to claim 6, characterized in that: the multifunctional alternating-current argon arc welding machine further comprises a camera module (105), and the first signal is a welding site image shot by the camera module (105);

8. The multifunctional alternating-current argon arc welding machine according to claim 7, characterized in that: the interaction module (103) further comprises a display module;

9. The multifunctional alternating current argon arc welding machine according to claim 1 or 8, characterized in that: before the master control module (101) generates the second signal according to the target waveform, the method further includes:

10. The multifunctional alternating-current argon arc welding machine according to claim 9, characterized in that: the camera module (105) is also used for acquiring a welding point image and transmitting the welding point image to the main control module (101);