Welding equipment and automatic welding system

Abstract

This disclosure discloses a welding apparatus and an automatic welding system. The welding apparatus includes a handle, a welding head structure, a heating mechanism, and a welding wire feeding mechanism. The handle is used to connect to a robotic arm or an automatic welding device. The welding head structure is located on the top of the handle. A molten pool is provided on the top of the welding head structure, and the pool wall has a notch. The heating mechanism is located on the handle and is used to heat the welding head structure. The welding wire feeding mechanism is located on the handle and is used to feed welding wire to the welding head structure. The welding wire enters the molten pool through the notch, and the heating mechanism heats the welding head structure to melt the welding wire in the molten pool, so that the welding apparatus can perform welding operations from bottom to top.

Description

Technical Field

[0001] This disclosure relates to the field of welding equipment technology, and in particular to a welding apparatus and an automatic welding system. Background Technology

[0002] In the existing circuit board (such as PCBA board) manufacturing process, soldering defects after the circuit board has undergone insertion and wave soldering processes need to be repaired manually. Manual repair is inefficient and may result in missed soldering or repair due to staff fatigue. Summary of the Invention

[0003] A primary objective of this disclosure is to overcome at least one of the deficiencies of the prior art described above, and to provide a welding apparatus capable of improving the automation of repairing poor soldering on circuit boards.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0005] According to one aspect of this disclosure, a welding apparatus is provided, comprising a handle, a welding head structure, a heating mechanism, and a welding wire feeding mechanism; the handle is used to connect to a robotic arm or an automatic welding device; the welding head structure is disposed on the top of the handle; a molten pool is provided on the top of the welding head structure, and a notch is provided in the wall of the molten pool; the heating mechanism is disposed on the handle for heating the welding head structure; the welding wire feeding mechanism is disposed on the handle for feeding welding wire to the welding head structure; wherein the welding wire enters the molten pool through the notch, and the heating mechanism heats the welding head structure to melt the welding wire in the molten pool, so that the welding apparatus can perform a bottom-up welding operation.

[0006] According to one embodiment of this disclosure, the notch is provided at the top of the wall of the molten pool, and the depth of the notch is less than the depth of the molten pool.

[0007] According to one embodiment of this disclosure, the depth of the notch accounts for 1 / 5 to 1 / 2 of the depth of the molten pool.

[0008] According to one embodiment of this disclosure, the welding apparatus further includes a temperature sensing element; the temperature sensing element is disposed on the welding head structure and is used to detect the temperature information of the welding head structure so that the heating mechanism can adjust its working state according to the temperature information.

[0009] According to one embodiment of this disclosure, the welding head structure is provided with a blind hole, the lower end of which opens at the bottom of the welding head structure, and the upper end of which is arranged at a distance from the bottom of the molten pool inside the welding head structure; wherein, the temperature sensing element is disposed in the blind hole.

[0010] According to one embodiment of this disclosure, the temperature sensing element is a thermocouple temperature sensor.

[0011] According to one embodiment of this disclosure, the heating mechanism includes an electric heating cylinder; the bottom of the electric heating cylinder is connected to the top of the handle, and the cylinder cavity of the electric heating cylinder opens at the top; wherein the welding head structure is inserted into the cylinder cavity of the electric heating cylinder from top to bottom.

[0012] According to one embodiment of this disclosure, the welding head structure includes a first part and a second part, the outer diameter of the first part is larger than the outer diameter of the second part, the second part is connected to the bottom of the first part so that the connection between the first part and the second part forms a downward limiting step surface; the second part is inserted into the cavity of the electric heating cylinder, and the limiting step surface is limited and matched with the top opening of the electric heating cylinder.

[0013] According to one embodiment of this disclosure, the electric heating cylinder is a high-frequency heating cylinder.

[0014] According to one embodiment of the present disclosure, the welding wire feeding mechanism includes a fixing frame and a guide head; the fixing frame is connected to the handle and extends upward at an angle; the guide head is disposed on the side of the fixing frame facing the welding head structure and is used to guide the welding wire; wherein the welding wire passes through the fixing frame and the guide head in sequence and extends to the top of the welding head structure.

[0015] According to one embodiment of this disclosure, the welding wire feeding mechanism further includes a guide hose; the guide hose is disposed on the side of the fixing frame facing away from the welding head structure, and is used to guide the welding wire; wherein the welding wire passes through the guide hose, the fixing frame and the guide head in sequence and extends to the top of the welding head structure.

[0016] Another primary objective of this disclosure is to overcome at least one of the deficiencies of the prior art described above and to provide an automatic welding system employing the welding apparatus described above.

[0017] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0018] According to another aspect of this disclosure, an automatic welding system is provided, which includes the welding apparatus proposed in this disclosure and described in the above embodiments.

[0019] According to one embodiment of this disclosure, the automatic welding system further includes a robotic arm or automatic welding equipment for connecting the handle of the welding device; wherein the robotic arm or automatic welding equipment moves according to X, Y, Z coordinates and control commands issued by the control unit of the automatic welding system to drive the welding device to move.

[0020] As can be seen from the above technical solutions, the advantages and positive effects of the welding apparatus and automatic welding system proposed in this disclosure are as follows:

[0021] The welding apparatus disclosed herein includes a handle, a welding head structure, a heating mechanism, and a welding wire feeding mechanism. The handle is used to connect to a robotic arm or automatic welding equipment. The welding head structure is located on the top of the handle. A molten pool is provided on the top of the welding head structure, and the pool wall has notches. The heating mechanism is located on the handle and is used to heat the welding head structure. The welding wire feeding mechanism is located on the handle and is used to feed welding wire to the welding head structure. The welding wire enters the molten pool through the notches, and the heating mechanism heats the welding head structure, causing the welding wire in the molten pool to melt, so that the welding apparatus can perform bottom-up welding operations. Through the above structural design, this disclosure enables the welding apparatus to be combined with automated equipment such as robotic arms or automatic welding equipment to achieve automatic repair welding operations on circuit boards. This disclosure uses a molten pool to contain the molten welding wire, which can realize selective soldering or dip soldering welding methods. Compared with traditional selective soldering devices or dip soldering devices, this disclosure has a smaller volume, more flexible layout, and better economy. Furthermore, this disclosure enables bottom-up soldering operations, overcoming the limitation of automatic soldering irons in certain scenarios where soldering cannot be done from the bottom. Using the soldering device proposed in this disclosure, DIP components of circuit boards do not require fixture pressing, and the boards do not need to be flipped, making operation convenient. Attached Figure Description

[0022] The various objectives, features, and advantages of this disclosure will become more apparent from the following detailed description of preferred embodiments of the disclosure taken in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the disclosure and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0023] Figure 1 This is a schematic diagram of the structure of a welding apparatus according to an exemplary embodiment;

[0024] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the diagram;

[0025] Figure 3 yes Figure 1 A schematic diagram of the welding head structure in the diagram;

[0026] Figure 4 yes Figure 3 The image shows an axial sectional view of the welding head structure;

[0027] Figure 5 yes Figure 1 A schematic diagram of the combined structure of the handle and the electric heating cylinder.

[0028] The annotations in the attached figures are explained as follows:

[0029] 100. Handle;

[0030] 200. Welding head structure;

[0031] 201. Part One;

[0032] 202. Part Two;

[0033] 203. Limiting step surface;

[0034] 210. Molten pool;

[0035] 220. Gap;

[0036] 230. Blind hole;

[0037] 300. Electric heating cylinder;

[0038] 400. Welding wire feeding mechanism;

[0039] 410. Fixture;

[0040] 420. Seeker head;

[0041] 430. Guiding hose;

[0042] 500. Welding wire;

[0043] H1. Depth;

[0044] H2. Pool depth. Detailed Implementation

[0045] Typical embodiments embodying the features and advantages of this disclosure will be described in detail in the following description. It should be understood that this disclosure can have various variations in different embodiments without departing from the scope of this disclosure, and the descriptions and drawings therein are for illustrative purposes only and not intended to limit this disclosure.

[0046] In the following description of various exemplary embodiments of this disclosure, reference is made to the accompanying drawings, which form part of this disclosure, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of this disclosure. It should be understood that other specific embodiments of the components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of this disclosure. Furthermore, while the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of this disclosure, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this disclosure.

[0047] SeeFigure 1 The diagram illustrates a typical structural schematic of the welding apparatus proposed in this disclosure. In this exemplary embodiment, the welding apparatus is described using an example of repairing and welding DIP components on a PCBA board. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below to apply the relevant designs of this disclosure to other types of application scenarios; these changes remain within the scope of the principles of the welding apparatus proposed in this disclosure.

[0048] like Figure 1 As shown, in one embodiment of this disclosure, the welding apparatus includes a handle 100, a welding head structure 200, a heating mechanism, and a welding wire feeding mechanism 400. (See also...) Figures 2 to 5 , Figure 2 China representatively shows Figure 1 An enlarged schematic diagram of part A in the diagram; Figure 3 The diagram shows a representative structural schematic of the welding head structure 200; Figure 4 The image shows a representative axial sectional view of the welding head structure 200; Figure 5 The diagram above shows a representative structural schematic of the combined structure of the handle 100 and the electric heating cylinder 300. The structure, connection method, and functional relationship of the main components of the welding apparatus proposed in this disclosure will be described in detail below with reference to the above-mentioned figures.

[0049] like Figures 1 to 5As shown, in one embodiment of this disclosure, the handle 100 is used to connect a robotic arm or an automated welding device. A welding head structure 200 is disposed on the top of the handle 100. A molten pool 210 is provided on the top of the welding head structure 200, and the pool wall of the molten pool 210 has notches 220. A heating mechanism is disposed on the handle 100 and is used to heat the welding head structure 200. For example, the welding head structure 200 can be made of metal, specifically an alloy, thereby enabling the heating mechanism to achieve rapid and uniform heating of the welding head structure 200. A welding wire feeding mechanism 400 is disposed on the handle 100 and is used to feed welding wire 500 to the welding head structure 200. Accordingly, the welding wire 500 enters the molten pool 210 through the notches 220, and the heating mechanism heats the welding head structure 200, causing the welding wire 500 in the molten pool 210 to melt, allowing the welding device to perform a bottom-up welding operation. Through the above structural design, this disclosure enables the welding device to be combined with automated equipment such as robotic arms or automatic welding equipment to achieve automated repair and welding operations on circuit boards. This disclosure uses a molten pool 210 to hold the molten solder wire 500, enabling selective soldering or dip soldering. Compared to traditional selective soldering or dip soldering devices, this disclosure has a smaller volume, more flexible arrangement, and better economic efficiency. Furthermore, this disclosure enables bottom-up welding operations, overcoming the limitation of automatic soldering irons in certain scenarios where soldering cannot be done from the bottom. Using the welding device proposed in this disclosure, DIP components on the circuit board do not require fixture pressing, and the board does not need to be flipped, making operation convenient.

[0050] Specifically, taking PCBA boards as an example, soldering defects after the PCBA board has undergone through-hole assembly and wave soldering processes require manual repair. To solve the problems of low repair efficiency or poor quality of manual repair, the following traditional automated soldering repair methods are currently available:

[0051] On the one hand, using existing automated PCBA board through-hole soldering equipment, such as wave soldering furnaces, immersion soldering machines, selective soldering furnaces, and automatic soldering irons, for through-hole soldering repairs suffers from drawbacks including poor performance, low efficiency, and high equipment costs. Specifically, wave soldering furnaces are bulky, expensive, and lack precision, and cannot perform single-point soldering. Selective soldering machines are also bulky and expensive. Immersion soldering furnaces are large and cannot automatically and accurately complete point-to-point repairs. When using automatic soldering irons, the DIP components on the PCBA board have their leads facing upwards, requiring bottom support to prevent them from falling. The soldering iron tip solders downwards on the PCB board. Furthermore, when there is excess solder or bridging, the soldering iron tip cannot adhere enough molten solder due to gravity, making the repair operation difficult.

[0052] On the other hand, if DIP components on electronic product boards are automatically spot-soldered, the soldering iron tip conducts heat to the component leads and PCBA pads, and solder wire is fed between the component leads and the soldering iron tip. The soldering iron heats up and melts the solder wire, completing the soldering. However, this method has the following drawbacks: when the component leads are facing upwards, excess solder and bridging occur on the component leads during the soldering process. During repair, due to the limitations of the soldering iron tip structure and gravity, the excess solder on the component leads cannot be removed, and the bridging solder joints cannot be separated smoothly, making automated repair impossible.

[0053] As described above, this disclosure enables bottom-up dip soldering in the repair and soldering of DIP components in electronic circuit boards, overcoming the limitation of automatic soldering irons in this field, which cannot apply solder from the bottom. Furthermore, DIP components do not require fixture pressing, and the circuit board does not need to be flipped. In addition, this disclosure offers significant cost advantages and is far more efficient than using a dedicated soldering machine in the repair and soldering of DIP components in electronic circuit boards. Compared to traditional dip soldering machines, this disclosure is more compact and flexible, compensating for the limitations of miniaturized and precise dip soldering operations.

[0054] like Figure 4 As shown, in one embodiment of this disclosure, the notch 220 can be disposed at the top of the wall of the molten pool 210, and the depth H1 of the notch 220 can be less than the depth H2 of the molten pool 210. Through the above structural design, this disclosure provides the notch 220 at the top of the wall of the molten pool 210, facilitating the entry of the solder wire 500 into the molten pool 210 through the notch 220. Furthermore, by designing the depth of the notch 220, it is possible to prevent the molten solder contained in the molten pool 210 from flowing out through the notch 220 if the depth H1 of the notch 220 is too large. This disclosure utilizes a notch 220 with a smaller depth H1 to prevent the molten solder from flowing out through fluid tension.

[0055] like Figure 4 As shown, based on the structural design that the depth H1 of the notch 220 is less than the pool depth H2 of the molten pool 210, in one embodiment of this disclosure, the proportion of the depth H1 of the notch 220 in the pool depth H2 of the molten pool 210 can be 1 / 5 to 1 / 2, for example, 1 / 5, 1 / 4, 1 / 3, 3 / 8, 2 / 5, 1 / 2, etc. Through the above structural design, this disclosure can avoid the notch 220 depth H1 being too large, which would make the molten solder in the molten state prone to leakage, and at the same time, it can avoid the notch 220 depth H1 being too small, which would make it difficult for the solder wire 500 to enter the molten pool 210 through the notch 220. In other embodiments of this disclosure, the proportion of the depth H1 of the notch 220 in the pool depth H2 of the molten pool 210 can also be less than 1 / 5 or greater than 1 / 2, for example, 1 / 6, 3 / 5, etc., and is not limited to this embodiment.

[0056] In one embodiment of this disclosure, the welding apparatus may further include a temperature sensing element. This temperature sensing element is disposed on the welding head structure 200 and is used to detect temperature information at the molten pool 210, allowing the heating mechanism to adjust its operating state based on this temperature information. For example, the heating mechanism may have a relatively independent control unit, which performs closed-loop control of the heating mechanism based on the temperature information collected by the temperature sensing element, achieving constant-temperature compensation heating of the welding head structure 200 to maintain a constant temperature. Alternatively, the heating mechanism may also be controlled by the control unit of an automatic welding system, in which case the control unit performs closed-loop control of the heating mechanism based on the temperature information collected by the temperature sensing element.

[0057] Based on the structural design of the welding apparatus including a temperature sensing element, in one embodiment of this disclosure, the welding head structure 200 may be provided with a blind hole 230. The lower end of the blind hole 230 opens at the bottom of the welding head structure 200, and the upper end of the blind hole 230 is arranged at a distance from the bottom of the molten pool 210 inside the welding head structure 200. On this basis, the temperature sensing element can be disposed within the blind hole 230. Through the above structural design, this disclosure utilizes the blind hole 230 to accommodate the temperature sensing element, and enables the temperature sensing element to be closer to the molten pool 210 region of the welding head structure 200. This allows the temperature information collected by the temperature sensing element to be closer to the temperature of the molten pool 210 region, that is, closer to the temperature of molten solder, which is beneficial to improving the sensitivity and accuracy of the closed-loop control of the heating mechanism.

[0058] Based on the structural design of the welding apparatus including a temperature sensing element, in one embodiment of this disclosure, the temperature sensing element can be a thermocouple temperature sensor. Specifically, the thermocouple temperature sensor collects temperature information of the welding head structure 200. Different temperatures cause the thermocouple of the thermocouple temperature sensor to exhibit different resistance values. The control unit can perform closed-loop control of the heating mechanism based on the electrical signal transmitted by the thermocouple temperature sensor.

[0059] like Figure 1 and Figure 5As shown, in one embodiment of this disclosure, the heating mechanism may include an electric heating cylinder 300. The bottom of the electric heating cylinder 300 is connected to the top of the handle 100, and the opening of the cylinder cavity of the electric heating cylinder 300 is at the top. Based on this, the welding head structure 200 is partially inserted into the cylinder cavity of the electric heating cylinder 300 from top to bottom. Through the above structural design, this disclosure utilizes the electric heating cylinder 300 as a heating mechanism to heat the welding head structure 200, while simultaneously enabling the welding head structure 200 to be positioned on the top of the handle 100 via the electric heating cylinder 300. Furthermore, the insertion design between the welding head structure 200 and the electric heating cylinder 300 enhances the connection strength and stability of both, and allows for more thorough contact between the electric heating cylinder 300 and the welding head structure 200, increasing the contact area and improving the heating rate and uniformity.

[0060] like Figure 3 As shown, based on the structural design of the welding head structure 200 partially inserted into the electric heating cylinder 300, in one embodiment of this disclosure, the welding head structure 200 may include a first part 201 and a second part 202. The outer diameter of the first part 201 is larger than the outer diameter of the second part 202, and the second part 202 is connected to the bottom of the first part 201. Accordingly, a downward-facing limiting step surface 203 (for example, annular) is formed at the connection between the first part 201 and the second part 202. Based on this, the welding head structure 200 is inserted into the cavity of the electric heating cylinder 300 with its second part 202, and the limiting step surface 203 is fitted with the top opening of the electric heating cylinder 300. Through the above structural design, this disclosure can achieve a limiting fit between the welding head structure 200 and the electric heating cylinder 300, avoiding excessive insertion of the welding head structure 200 into the electric heating cylinder 300, which is beneficial to improving structural stability and reliability.

[0061] Based on the design of the heating mechanism including the electric heating cylinder 300, in one embodiment of this disclosure, the electric heating cylinder 300 can be a high-frequency heating cylinder.

[0062] like Figure 1 As shown, in one embodiment of this disclosure, the welding wire feeding mechanism 400 may include a fixing frame 410 and a guide head 420. The fixing frame 410 is connected to the handle 100 and extends upward at an angle. The guide head 420 is disposed on the side of the fixing frame 410 facing the welding head structure 200, and is used to guide the welding wire 500. Accordingly, the welding wire 500 passes through the fixing frame 410 and the guide head 420 in sequence and extends to the top of the welding head structure 200. Through the above structural design, this disclosure utilizes the fixing frame 410 and the guide head 420 to guide the welding wire 500, enabling the welding wire 500 to be fed more accurately and smoothly into the molten pool 210, maintaining the stability of the welding operation and high welding quality.

[0063] like Figure 1As shown, based on the structural design of the welding wire feeding mechanism 400 including the fixing frame 410, in one embodiment of this disclosure, the welding wire feeding mechanism 400 may further include a guide hose 430. The guide hose 430 is disposed on the side of the fixing frame 410 facing away from the welding head structure 200, and is used to guide the welding wire 500. Accordingly, the welding wire 500 passes sequentially through the guide hose 430, the fixing frame 410, and the guide head 420, extending to the top of the welding head structure 200. Through the above structural design, this disclosure further utilizes the guide hose 430 to achieve the function of guiding the welding wire 500 on the material receiving side of the fixing frame 410, further maintaining the stability of the welding operation and higher welding quality.

[0064] It should be noted that the welding apparatus shown in the accompanying drawings and described in this specification are merely a few examples of many welding apparatuses capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the welding apparatus shown in the accompanying drawings or described in this specification.

[0065] Based on the above detailed description of several exemplary embodiments of the welding apparatus proposed in this disclosure, an exemplary embodiment of the automatic welding system proposed in this disclosure will be described below.

[0066] In one embodiment of this disclosure, the automatic welding system proposed in this disclosure includes the welding apparatus proposed in this disclosure and described in detail in the above embodiments.

[0067] In one embodiment of this disclosure, the automatic welding system may further include a robotic arm or automatic welding equipment (e.g., an automatic mobile device) for connecting a handle 100 of the welding apparatus. Based on this, the robotic arm or automatic welding equipment moves according to X, Y, Z coordinates and control commands issued by the control unit of the automatic welding system to move the welding apparatus.

[0068] It should be noted that the automated welding systems shown in the accompanying drawings and described in this specification are merely a few examples of many automated welding systems capable of employing the principles of this disclosure. It should be clearly understood that the principles of this disclosure are by no means limited to any detail or component of the automated welding systems shown in the accompanying drawings or described in this specification.

[0069] For example, the solder wire 500 mentioned in this specification can be tin wire. Accordingly, the heating mechanism heats the solder head structure 200, while the solder wire feeding mechanism 400 feeds tin wire into the molten pool. When the temperature is heated to above 217°C, the tin wire melts, and the molten tin is contained in the molten pool 210, forming a solder pool. At this time, the automated equipment moves the welding device from bottom to top to repair the DIP parts according to the coordinate instructions. At the same time, it automatically feeds in an appropriate amount of tin wire as needed, and the selective dip soldering operation can be completed automatically.

[0070] In summary, the welding apparatus disclosed herein includes a handle 100, a welding head structure 200, a heating mechanism, and a welding wire feeding mechanism 400. The handle 100 is used to connect to a robotic arm or automatic welding equipment. The welding head structure 200 is disposed on the top of the handle 100. A molten pool 210 is provided on the top of the welding head structure 200, and a notch 220 is provided on the pool wall of the molten pool 210. The heating mechanism is disposed on the handle 100 and is used to heat the welding head structure 200. The welding wire feeding mechanism 400 is disposed on the handle 100 and is used to feed welding wire 500 to the welding head structure 200. The welding wire 500 enters the molten pool 210 through the notch 220, and the heating mechanism heats the welding head structure 200, causing the welding wire 500 in the molten pool 210 to melt, so that the welding apparatus can perform bottom-up welding operations. Through the above structural design, this disclosure enables the welding apparatus to be combined with automated equipment such as robotic arms or automatic welding equipment to achieve automatic repair welding operations on circuit boards. This disclosure employs a molten pool 210 to hold molten solder wire 500, enabling selective soldering or dip soldering. Compared to traditional selective soldering or dip soldering devices, this disclosure has a smaller size, more flexible layout, and better economic efficiency. Furthermore, this disclosure enables bottom-up soldering operations, overcoming the limitation of automatic soldering irons in certain scenarios where soldering cannot be done from the bottom. Using the soldering device proposed in this disclosure, DIP components on circuit boards do not require fixture pressing, and the boards do not need to be flipped, making operation convenient.

[0071] The exemplary embodiments of the welding apparatus and automatic welding system proposed in this disclosure have been described and / or illustrated in detail above. However, the embodiments of this disclosure are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms "a," "an," and "the above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising," "including," and "having" are used to indicate an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc. Furthermore, the terms "first" and "second," etc., in the claims and description are used only as illustrative marks and are not intended to limit the numerical scope of the subject matter.

[0072] Although the welding apparatus and automatic welding system disclosed herein have been described with respect to different specific embodiments, those skilled in the art will recognize that modifications may be made to the implementation of this disclosure within the spirit and scope of the claims.

Claims

1. A welding apparatus, characterized in that, include: Handle (100) for connecting to a robotic arm or automated welding equipment; A welding head structure (200) is disposed on the top of the handle (100); a molten pool (210) is disposed on the top of the welding head structure (200), and a notch (220) is disposed on the pool wall of the molten pool (210); A heating mechanism is provided on the handle (100) for heating the welding head structure (200); as well as A welding wire feeding mechanism (400) is disposed on the handle (100) for feeding welding wire (500) to the welding head structure (200); In this process, the welding wire (500) enters the molten pool (210) through the notch (220), and the heating mechanism heats the welding head structure (200) to melt the welding wire (500) in the molten pool (210) so that the welding device can perform a bottom-up welding operation.

2. The welding apparatus according to claim 1, characterized in that, The notch (220) is provided at the top of the pool wall of the molten pool (210), and the depth (H1) of the notch (220) is less than the pool depth (H2) of the molten pool (210).

3. The welding apparatus according to claim 2, characterized in that, The depth (H1) of the notch (220) accounts for 1 / 5 to 1 / 2 of the pool depth (H2) of the molten pool (210).

4. The welding apparatus according to claim 1, characterized in that, The welding device further includes a temperature sensing element; the temperature sensing element is disposed on the welding head structure (200) and is used to detect the temperature information of the welding head structure (200) so that the heating mechanism can adjust its working state according to the temperature information.

5. The welding apparatus according to claim 4, characterized in that, The welding head structure (200) is provided with a blind hole (230), the lower end of the blind hole (230) is open at the bottom of the welding head structure (200), and the upper end of the blind hole (230) is arranged at intervals between the bottom of the molten pool (210) inside the welding head structure (200); wherein, the temperature sensing element is disposed in the blind hole (230).

6. The welding apparatus according to claim 4, characterized in that, The temperature sensing element is a thermocouple temperature sensor.

7. The welding apparatus according to claim 1, characterized in that, The heating mechanism includes an electric heating cylinder (300); the bottom of the electric heating cylinder (300) is connected to the top of the handle (100), and the cylinder cavity of the electric heating cylinder (300) is open at the top; wherein, the welding head structure (200) is inserted into the cylinder cavity of the electric heating cylinder (300) from top to bottom.

8. The welding apparatus according to claim 7, characterized in that, The welding head structure (200) includes a first part (201) and a second part (202). The outer diameter of the first part (201) is larger than the outer diameter of the second part (202). The second part (202) is connected to the bottom of the first part (201) so that the connection between the first part (201) and the second part (202) forms a downward limiting step surface (203). The second part (202) is inserted into the cavity of the electric heating cylinder (300), and the limiting step surface (203) is limited and matched with the top opening of the electric heating cylinder (300).

9. The welding apparatus according to claim 7, characterized in that, The electric heating cylinder (300) is a high-frequency heating cylinder.

10. The welding apparatus according to claim 1, characterized in that, The welding wire feeding mechanism (400) includes a fixing frame (410) and a guide head (420); the fixing frame (410) is connected to the handle (100) and extends upward at an angle; the guide head (420) is disposed on the side of the fixing frame (410) facing the welding head structure (200) and is used to guide the welding wire (500); wherein the welding wire (500) passes through the fixing frame (410) and the guide head (420) in sequence and extends to the top of the welding head structure (200).

11. The welding apparatus according to claim 10, characterized in that, The welding wire feeding mechanism (400) further includes a guide hose (430); the guide hose (430) is disposed on the side of the fixing frame (410) facing away from the welding head structure (200) and is used to guide the welding wire (500); wherein the welding wire (500) passes through the guide hose (430), the fixing frame (410) and the guide head (420) in sequence and extends to the top of the welding head structure (200).

12. An automatic welding system, characterized in that, Includes the welding apparatus as described in any one of claims 1 to 11.

13. The automatic welding system according to claim 12, characterized in that, The automatic welding system further includes a robotic arm or automatic welding equipment for connecting the handle (100) of the welding device; wherein the robotic arm or automatic welding equipment moves according to the X, Y, Z coordinates and control commands issued by the control unit of the automatic welding system to drive the welding device to move.

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