Wire breakable underwater wire feeder

Abstract

This invention provides an underwater wire feeder with a wire-cutting mechanism, relating to the field of underwater welding technology. The underwater wire feeder includes a first waterproof sealed housing, within which are a wire storage mechanism for storing welding wire, a wire straightening mechanism for straightening the welding wire, and a wire feeding mechanism. It also includes a second waterproof sealed housing located outside the first waterproof sealed housing, close to the welding station. The second waterproof sealed housing and the first waterproof sealed housing are connected via a wire feeding tube. The second waterproof sealed housing contains a wire-cutting mechanism for cutting the welding wire. If the welding wire adheres to the target structure, obstructing the operation of the welding equipment, the wire-cutting mechanism quickly cuts the welding wire, ensuring the movement of the welding equipment is not affected. Furthermore, when the wire feeding tube bends, causing wire bending, the mechanism quickly cuts and separates the bent welding wire, preserving the unaffected portion, thereby improving the efficiency of underwater welding operations.

Description

Technical Field

[0001] This invention relates to the field of underwater welding technology, and in particular to an underwater wire feeder with wire breakage capability. Background Technology

[0002] Underwater welding technology has become an indispensable technology in marine resource development and marine engineering. During their service at sea, marine engineering structures are subjected to external loads, resulting in varying degrees of damage and performance loss, such as impact defects, corrosion, and fatigue cracks. This leads to a decrease in the resistance of marine engineering structures, necessitating continuous maintenance and repair during their service life to ensure their safe and reliable operation.

[0003] To date, the underwater welding methods researched and applied include wet welding and dry welding. Both wet and dry welding rely on underwater wire feeders. These feeders are typically designed with a series of monitoring circuits to ensure the stability of the wire feeding process. One invention patent, titled "An Intelligent Arc Welding Robot Submersible Wire Feeder," focuses primarily on the wire feeder circuitry. Another invention patent, titled "Lightweight Fully Sealed Underwater Automatic Welding Wire Feeder," separates the drive motor and wire feeding mechanism into two compartments. A utility model patent, titled "Portable Underwater Welding Wire Feeder," focuses on providing welding wire for underwater welders. A third invention patent, titled "A Compact Fully Sealed Welding Wire Feeder," primarily describes the general functions of the wire feeder.

[0004] However, when welding in underwater environments, if the welding wire adheres to the target structure, the operation of the welding equipment will be obstructed. Forcibly pulling the welding wire away from the target structure will damage the wire feeding equipment. Furthermore, if the wire feeding tube is bent, it will cause the wire feeding to bend, resulting in deviation during the welding process and affecting the welding quality. Therefore, how to avoid damage to the wire feeding equipment and improve the welding quality has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an underwater wire feeder with a wire breakable mechanism to solve the technical problems of existing wire feeders when operating underwater, such as the welding wire sticking to the target structure, obstructing the operation of the welding equipment, forcibly pulling the welding wire away from the target structure, and causing damage to the wire feeder; and the technical problem of the wire feeder bending when the wire feeder tube bends, causing deviation during the welding process and affecting the welding quality.

[0006] An underwater wire feeder with wire breakability is provided, comprising a first waterproof sealed housing, wherein the first waterproof sealed housing is provided with a wire storage mechanism for storing welding wire, a wire straightening mechanism for straightening welding wire, and a wire feeding mechanism for feeding wire, and further comprising a second waterproof sealed housing located outside the first waterproof sealed housing, the second waterproof sealed housing being close to the welding station, the second waterproof sealed housing being connected to the first waterproof sealed housing through a wire feeding tube, and the second waterproof sealed housing being provided with a wire breaking mechanism for cutting welding wire.

[0007] According to one optional embodiment, the wire cutting mechanism includes a movable guide tube, a fixed guide tube, and a cutting clamp. One end of the movable guide tube is placed on the extension line of the central axis of the wire feeding tube, and the other end of the movable guide tube is slidably inserted into the fixed guide tube. The cutting clamp is located circumferentially in the movable guide tube. When the movable guide tube is inserted into the fixed guide tube, the cutting clamp cuts the welding wire.

[0008] According to one optional embodiment, a wire breaking frame is provided below the movable conduit, a wire breaking frame is provided in the wire breaking frame, a pliers mounting slot is provided in the pliers mounting slot, a pliers driving block is provided in the pliers mounting slot, dovetail bosses are provided on both sides of the pliers driving block, and dovetail grooves adapted to the dovetail bosses are provided on the two pliers handles of the pliers, and the pliers driving block is driven and connected to the wire breaking driving cylinder.

[0009] According to one optional embodiment, the fixed conduit is fixedly mounted on a fixed conduit positioning block at one end opposite to the movable conduit, and the fixed conduit positioning block is fixedly mounted on the side wall of the second waterproof sealing housing.

[0010] According to one alternative embodiment, the end of the fixed conduit facing the movable conduit is flared.

[0011] According to one optional embodiment, the second waterproof sealing housing is provided with a wire breakage monitoring mechanism and a second temperature and humidity sensor. The wire breakage monitoring mechanism and the second temperature and humidity sensor are located on the top wall of the second waterproof sealing housing and extend downward.

[0012] According to one optional embodiment, the bottom of the first waterproof sealing housing is provided with an mounting plate, and the welding wire storage mechanism, the welding wire straightening mechanism and the wire feeding mechanism are all mounted on the mounting plate. The welding wire storage mechanism includes a wire spool frame and a wire spool, and the wire spool is sleeved on the wire spool frame.

[0013] According to one optional embodiment, the wire straightening mechanism includes a straightening frame and a straightening clamping block. The straightening frame is disposed between the wire spool and the wire feeding mechanism. The top of the straightening frame is provided with a clamping block groove. The straightening clamping block is installed in the clamping block groove and can slide in the clamping block groove. Both the top of the straightening frame and the straightening clamping block are provided with ceramic bearings.

[0014] According to one optional embodiment, the wire feeding mechanism includes a wire feeding frame, an active wire feeding wheel, and a driven wire feeding wheel. The wire feeding frame is provided with a wire inlet on one side of the straightening frame. The active wire feeding wheel and the driven wire feeding wheel are mounted on the wire feeding frame one above the other. Under the action of a clamping force, the driven wire feeding wheel pushes the welding wire in the rotational direction through the squeezing action of the active wire feeding wheel.

[0015] According to one optional embodiment, the first waterproof sealing housing is provided with a wire feeding monitoring mechanism and a first temperature and humidity sensor. The wire feeding monitoring mechanism is mounted on the mounting plate for visually and dynamically monitoring the wire feeding process, and the first temperature and humidity sensor is mounted on the side wall of the first waterproof sealing housing.

[0016] The underwater wire feeder with breakable wire provided by this invention has the following technical advantages:

[0017] This type of underwater wire feeder with wire breakage capability mainly consists of a first waterproof sealed housing and a second waterproof sealed housing. The first waterproof sealed housing contains a wire storage mechanism, a wire straightening mechanism, and a wire feeding mechanism. The second waterproof sealed housing is located near the welding station and contains a wire breaking mechanism. The wire storage mechanism stores the welding wire, the wire straightening mechanism straightens the welding wire, and the wire feeding mechanism feeds the welding wire into the second waterproof sealed housing. When welding in an underwater environment, if the welding wire adheres to the target structure, obstructing the operation of the welding equipment, the wire breaking mechanism quickly cuts off the welding wire, ensuring that the movement of the welding equipment is not affected. Additionally, when the wire feeding tube bends, causing the wire to bend, the mechanism quickly cuts off the bent portion of the welding wire, preserving the unaffected part, thereby improving the efficiency of underwater welding operations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of an underwater wire feeder capable of wire breakage according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of the internal structure of an underwater wire feeder capable of cutting wires.

[0021] Figure 3 yes Figure 1 A schematic diagram of the internal structure of the first waterproof sealing shell of the underwater wire feeder with breakable wire;

[0022] Figure 4 yes Figure 3 A schematic diagram of the straightening frame of the welding wire straightening mechanism;

[0023] Figure 5 yes Figure 3 A schematic diagram of the wire feeding frame of the central wire feeding mechanism;

[0024] Figure 6 yes Figure 1 Schematic diagram of the internal structure of the second waterproof sealing shell of the underwater wire feeder with breakable wire;

[0025] Figure 7 yes Figure 6 A schematic diagram of the wire breaking mechanism frame;

[0026] Figure 8 yes Figure 6 A schematic diagram of the shearing drive block of the interrupted wire mechanism;

[0027] Figure 9 yes Figure 6 A schematic diagram of the wire-cutting mechanism's cutting clamp;

[0028] Figure 10 yes Figure 6 A schematic diagram of the wire breakage monitoring mechanism inside the second waterproof sealing housing.

[0029] in, Figures 1-10 :

[0030] 1. First waterproof sealing housing; 11. Sealing cover of the first waterproof sealing housing; 12. Welding wire storage mechanism; 121. Wire spool; 122. Wire spool holder; 13. Welding wire straightening mechanism; 131. Straightening frame; 1311. Clamping block groove; 1312. Waist-shaped hole; 132. Straightening clamping block; 133. Ceramic bearing; 14. Wire feeding mechanism; 141. Active wire feeding wheel; 142. Driven wire feeding wheel; 143. Wire feeding frame; 144. Wire inlet; 145. Planetary gear reducer; 146. Stepper motor; 15. Wire feeding monitoring mechanism; 151. Mounting bracket; 152. Glass cover; 16. First temperature and humidity sensor; 17. Mounting plate; 18. Waterproof aviation connector;

[0031] 2. Second waterproof sealing housing; 21. Sealing cover of the second waterproof sealing housing; 22. Second temperature and humidity sensor; 23. Wire breaking mechanism; 231. Movable guide tube; 232. Fixed guide tube; 2321. Fixed guide tube positioning block; 233. Cutting pliers; 2331. Dovetail groove; 2332. Blade; 234. Wire breaking frame; 2341. Cutting pliers mounting groove; 2342. Cutting pliers guide groove; 2343. Cutting pliers drive block limiting surface; 235. Cutting pliers drive block; 2351. Dovetail boss; 236. Wire breaking cylinder piston rod; 237. Wire breaking drive cylinder; 238. Movable guide tube clamping block; 239. Movable guide tube moving cylinder; 2391. Cylinder piston rod; 24. Wire breaking monitoring mechanism; 241. Glass cover; 3. Wire feeding tube. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0033] See Figures 1-10 This is a schematic diagram of the structure of an underwater wire feeder provided in an embodiment of the present invention. This underwater wire feeder has the function of cutting welding wire.

[0034] Specifically, the underwater wire feeder includes a first waterproof sealing housing 1 and a second waterproof sealing housing 2. The second waterproof sealing housing 2 is located outside the first waterproof sealing housing 1 and close to the welding station. The volume of the second waterproof sealing housing 2 is larger than the volume of the first waterproof sealing housing 1. The sealing cover 11 of the first waterproof sealing housing is located on top (see...). Figure 1 (Above and below indication), the sealing cap 21 of the second waterproof sealing housing is located on the side.

[0035] The first waterproof sealing housing 1 has an internal mounting plate 17, which is horizontally positioned at the bottom of the first waterproof sealing housing 1. The mounting plate 17 is threadedly connected to the bottom surface of the first waterproof sealing housing 1 to complete positioning and installation. In addition, the first waterproof sealing housing 1 also has a welding wire storage mechanism 12, a welding wire straightening mechanism 13, and a wire feeding mechanism 14. (See [reference]) Figure 2 The welding wire storage mechanism 12, the welding wire straightening mechanism 13, and the wire feeding mechanism 14 are arranged sequentially from one side to the other inside the first waterproof sealing housing 1. The welding wire storage mechanism 12 is used to temporarily store welding wire, the welding wire straightening mechanism 13 can straighten the curved welding wire released from the welding wire storage mechanism 12, and the wire feeding mechanism 14 is used to feed welding wire into the second waterproof sealing housing 2.

[0036] The second waterproof sealing housing 2 and the first waterproof sealing housing 1 are connected by a wire feeding tube 3. See Figure 1 and Figure 2 The second waterproof sealing shell 2 is equipped with a wire cutting mechanism 23. When welding is carried out in an underwater environment, if the welding wire sticks to the target structure and the operation of the welding equipment is obstructed, the wire cutting mechanism 23 can quickly cut off the welding wire so that the movement of the welding equipment is not affected. In addition, when the wire feeding tube 3 bends, the wire feeding is bent. The bent welding wire is quickly cut off and separated, and the part that is not affected by the bend is retained, thereby improving the efficiency of underwater welding operations.

[0037] There are many different structures for the wire breaking mechanism 23, the welding wire storage mechanism 12, the welding wire straightening mechanism 13, and the wire feeding mechanism 14. The exemplary embodiments of the wire breaking mechanism 23, the welding wire storage mechanism 12, the welding wire straightening mechanism 13, and the wire feeding mechanism 14 are described in detail in the following examples.

[0038] Example 1:

[0039] In this embodiment, see Figures 6-9 The aforementioned wire-cutting mechanism 23 includes a movable guide tube 231, a fixed guide tube 232, and a cutting clamp 233. One end of the movable guide tube 231 is placed on the extension line of the central axis of the wire feeding tube 3, and the other end of the movable guide tube 231 is slidably inserted into the fixed guide tube 232. The cutting clamp 233 is located around the movable guide tube 231, preferably below it. When the movable guide tube 231 is inserted into the fixed guide tube 232, the cutting clamp 233 cuts the welding wire.

[0040] The sliding of the aforementioned movable guide tube 231 specifically includes two states. One state is in the normal wire feeding state, where the movable guide tube 231 is not inserted into the fixed guide tube 232. The other state is when the welding wire adheres to the target structure or the welding wire is bent, and the movable guide tube 231 is inserted into the fixed guide tube 232. At this time, a gap is formed between the movable guide tube 231 and the wire feeding tube 3, and this gap is used to cut the welding wire.

[0041] Below the movable conduit 231 is a wire-cutting frame 234, which supports the cutting pliers 233 and enables the opening and closing of the cutting pliers 233 to cut the welding wire. The wire-cutting frame 234 is fixed to the sealing cover 21 of the second waterproof sealing shell by threaded connection.

[0042] See Figure 6 and Figure 7The wire breaking frame 234 is provided with a shearing clamp mounting groove 2341 and a shearing clamp drive block limiting surface 2343. The shearing clamp drive block limiting surface 2343 guides the shearing clamp 233 to move towards the center and prevents the shearing clamp drive block 235 from disengaging from the shearing clamp 233. A shearing clamp guide groove 2342 is provided at the top. The shearing clamp drive block 235 is installed in the shearing clamp mounting groove 2341. Dovetail bosses 2351 are provided on both sides of the shearing clamp drive block 235. The two clamp handles of the shearing clamp 233 are provided with dovetail grooves 2331 that are adapted to the dovetail bosses 2351. The dovetail grooves 2331 on the shearing clamp 233 can slide relative to the dovetail bosses 2351 on the shearing clamp drive block 235. This sliding method realizes the opening and closing of the shearing clamp 233.

[0043] In order to achieve relative sliding between the shearing pliers drive block 235 and the shearing pliers 233, that is, to achieve the opening and closing of the shearing pliers 233, a wire breaking drive cylinder 237 is provided below the shearing pliers drive block 235. The shearing pliers drive block 235 and the wire breaking drive cylinder 237 are driven and connected through the wire breaking cylinder piston rod 236.

[0044] Specifically, the fixed conduit 232 is fixed by the fixed conduit positioning block 2321. The end of the fixed conduit 232 opposite to the movable conduit 231 is fixedly installed on the fixed conduit positioning block 2321, and the fixed conduit positioning block 2321 is fixedly installed on the side wall of the second waterproof sealing shell 2.

[0045] See Figure 6 The fixed conduit 232 is flared at one end facing the movable conduit 231, which facilitates the insertion of the movable conduit 231 into the fixed conduit 232 and creates space for cutting the welding wire. In addition, the inlet end of the movable conduit 231 is also flared to facilitate the entry of the welding wire into the movable conduit 231.

[0046] See Figure 6 A movable conduit clamping block 238 is provided above the movable conduit 231. The movable conduit clamping block 238 clamps the movable conduit 231 from above, so as to realize the insertion of the movable conduit 231 into the fixed conduit 232. The movable conduit clamping block 238 is driven by the movable conduit moving cylinder 239. The movable conduit moving cylinder 239 is connected to the movable conduit clamping block 238 through the cylinder piston rod 2391. Under the drive of the movable conduit moving cylinder 239, it moves along the axial direction of the movable conduit 231 and partially enters the fixed conduit 232, so that the welding wire is exposed.

[0047] The movable conduit moving cylinder 239 is installed on the side sealing cover of the second waterproof sealing housing 2 by a threaded connection, and the contact surface is provided with an O-ring to enhance the sealing effect.

[0048] Additionally, see Figure 1 and Figure 2The second waterproof sealing housing 2 is provided with a wire breakage monitoring mechanism 24 and a second temperature and humidity sensor 22. The wire breakage monitoring mechanism 24 and the second temperature and humidity sensor 22 are located on the top wall of the second waterproof sealing housing 2 and extend downward.

[0049] The wire breakage monitoring mechanism 24 can be used to observe the wire breakage situation and realize visual dynamic monitoring.

[0050] The wire breakage monitoring mechanism 24 is installed on the top wall of the second waterproof sealing housing 2. It includes a camera and a glass cover 241. The camera is installed inside the glass cover 241 and is wirelessly connected to the remote observation platform, so that the wire breakage process can be obtained in real time using the camera.

[0051] The second temperature and humidity sensor 22 is used to detect the internal temperature and humidity of the second waterproof sealing housing 2. If the relative humidity inside the second waterproof sealing housing 2 is too high, firstly, the welded parts are prone to rust, causing defects in the welding process; secondly, it is easy to produce defects such as pores. Therefore, the second temperature and humidity sensor 22 is used to detect the temperature and humidity. When the temperature and humidity are too high, drying treatment is carried out.

[0052] The specific process is as follows: When wire sticking occurs, the movable guide cylinder 239 pushes part of the movable guide 231 into the fixed guide 232, and the wire breaking drive cylinder 237 drives the shearing pliers drive block 235 to move downward. The shearing pliers 233 moves inward along the shearing pliers mounting groove 2341 under the downward pull of the shearing pliers drive block 235. The relative movement of the two blades 2332 of the shearing pliers 233 generates a shearing effect on the welding wire, causing the welding wire to be cut short.

[0053] Example 2:

[0054] In this embodiment, see Figures 1-5 The aforementioned welding wire storage mechanism 12 includes a wire spool frame 122 and a wire spool 121. The wire spool 121 is mounted on the wire spool frame 122, and the welding wire can be wound around the wire spool 121 one loop at a time.

[0055] The wire straightening mechanism 13 includes a straightening frame 131 and a straightening clamping block 132. The straightening frame 131 is located between the wire spool frame 122 and the wire feeder frame 143. (See also...) Figure 4 The top of the straightening frame 131 is provided with a pressing block groove 1311, which extends from one side of the top of the straightening frame 131 to the opposite side. The pressing block groove 1311 has a waist-shaped hole 1312. The straightening pressing block 132 is installed in the waist-shaped hole 1312 and can slide in the pressing block groove 1311 through the waist-shaped hole 1312. This sliding method is manually adjustable. Both the top of the straightening frame 131 and the top of the straightening pressing block 132 are provided with ceramic bearings 133.

[0056] See Figure 3This embodiment includes three ceramic bearings 133. One ceramic bearing 133 is installed above the straightening and pressing block 132, and two ceramic bearings 133 are installed above the straightening frame 131. The two ceramic bearings 133 of the straightening frame 131 are located on both sides of the ceramic bearing 133 of the straightening and pressing block 132. Since the ceramic bearing 133 located in the middle can move back and forth, it can adapt to welding wires with different curvatures to achieve the purpose of straightening.

[0057] See Figure 3 and Figure 5 The wire feeding mechanism 14 includes a wire feeding frame 143, an active wire feeding wheel 141, and a driven wire feeding wheel 142. A planetary gear reducer 145 and a stepper motor 146 are installed on one side of the active wire feeding wheel 141. The stepper motor 146 is driven by the active wire feeding wheel 141 through the planetary gear reducer 145 to realize the rotation of the active wire feeding wheel 141. The driven wire feeding wheel 142 is located below the active wire feeding wheel 141. The two are fixed by the wire feeding frame 143. Under the action of the clamping force, the driven wire feeding wheel 142 pushes the welding wire in the rotation direction through the squeezing action with the active wire feeding wheel 141. The stepper motor 146 provides the rotation power source.

[0058] The wire feeder frame 143 is located on one side of the straightening frame 131 and is equipped with a wire inlet 144. The welding wire enters the wire feeding mechanism 14 through the wire inlet 144.

[0059] In addition, the first waterproof sealing housing 1 is equipped with a wire feeding monitoring mechanism 15 and a first temperature and humidity sensor 16. The wire feeding monitoring mechanism 15 is installed on the mounting plate 17 and is used for visual dynamic monitoring of the wire feeding process. When the wire feeding stability of underwater welding operations decreases, the visual wire feeding status can quickly analyze the fault point and perform remote diagnosis. The visual dynamic monitoring of the wire feeding process greatly improves the elimination of fault points in underwater operations, thereby greatly improving the efficiency of underwater welding operations.

[0060] The wire feeding monitoring mechanism 15 is fixed by the mounting bracket 151 and includes a camera and a glass cover 152. The camera is installed inside the glass cover 152 and is wirelessly connected to the remote observation platform, so that the wire feeding process can be obtained in real time by using the camera.

[0061] The first temperature and humidity sensor 16 is installed on the side wall of the first waterproof sealing housing 1. The first temperature and humidity sensor 16 is used to detect the temperature and humidity inside the first waterproof sealing housing 1 in a timely manner. If the relative humidity inside the first waterproof sealing housing 1 is too high, firstly, the welded parts are prone to rust, which will cause defects in the welding process; secondly, it is easy to produce defects such as pores. Therefore, the first temperature and humidity sensor 16 is used to detect the temperature and humidity. When the temperature and humidity are too high, drying treatment is carried out.

[0062] The first waterproof sealing housing 1 is provided with a waterproof aviation connector 18. The motor control line and the visual monitoring signal line pass through the waterproof aviation connector 18 and exit the first waterproof sealing housing 1. The wire feeding quick connector and the protective gas quick connector check valve are both threadedly connected to the first waterproof sealing housing 1.

[0063] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An underwater wire feeder with a wire-breaking capability, characterized in that, The device includes a first waterproof sealing shell, which contains a welding wire storage mechanism for storing welding wire, a welding wire straightening mechanism for straightening welding wire, and a wire feeding mechanism for feeding welding wire. It also includes a second waterproof sealing shell located outside the first waterproof sealing shell, which is close to the welding station. The second waterproof sealing shell and the first waterproof sealing shell are connected by a wire feeding tube. The second waterproof sealing shell contains a wire cutting mechanism for cutting welding wire. The wire-cutting mechanism includes a movable guide tube, a fixed guide tube, and a cutting clamp. One end of the movable guide tube is located on the extension line of the central axis of the wire feeding tube, and the other end of the movable guide tube is slidably inserted into the fixed guide tube. The cutting clamp is located around the movable guide tube. When the movable guide tube is inserted into the fixed guide tube, the cutting clamp cuts the welding wire. Below the movable guide tube is a wire breaking frame, and inside the wire breaking frame is a shearing pliers mounting slot. Inside the shearing pliers mounting slot is a shearing pliers driving block. On both sides of the shearing pliers driving block are dovetail bosses. On the two pliers handles of the shearing pliers are dovetail grooves that are adapted to the dovetail bosses. The shearing pliers driving block is driven and connected to the wire breaking driving cylinder.

2. The underwater wire feeder with breakable wire as described in claim 1, characterized in that, One end of the fixed conduit is fixedly installed on the fixed conduit positioning block, and the fixed conduit positioning block is fixedly installed on the side wall of the second waterproof sealing shell.

3. The underwater wire feeder with wire breakage capability according to claim 1, characterized in that, The fixed conduit is flared at the end facing the movable conduit.

4. The underwater wire feeder with breakable wire as described in claim 1, characterized in that, The second waterproof sealing housing is equipped with a wire breakage monitoring mechanism and a second temperature and humidity sensor. The wire breakage monitoring mechanism and the second temperature and humidity sensor are located on the top wall of the second waterproof sealing housing and extend downward.

5. The underwater wire feeder with breakable wire according to any one of claims 1-4, characterized in that, The bottom of the first waterproof sealing housing is provided with an installation plate. The welding wire storage mechanism, the welding wire straightening mechanism and the wire feeding mechanism are all installed on the installation plate. The welding wire storage mechanism includes a wire spool frame and a wire spool, and the wire spool is sleeved on the wire spool frame.

6. The underwater wire feeder with breakable wire according to claim 5, characterized in that, The wire straightening mechanism includes a straightening frame and a straightening clamping block. The straightening frame is located between the wire spool and the wire feeding mechanism. The top of the straightening frame is provided with a clamping block groove. The straightening clamping block is installed in the clamping block groove and can slide in the clamping block groove. Both the top of the straightening frame and the straightening clamping block are provided with ceramic bearings.

7. The underwater wire feeder with breakable wire according to claim 6, characterized in that, The wire feeding mechanism includes a wire feeding frame, an active wire feeding wheel, and a passive wire feeding wheel. The wire feeding frame is located on one side of the straightening frame and is provided with a wire inlet. The active wire feeding wheel and the passive wire feeding wheel are mounted on the wire feeding frame one above the other. Under the action of the clamping force, the passive wire feeding wheel pushes the welding wire in the rotational direction through the squeezing action of the active wire feeding wheel.

8. The underwater wire feeder with breakable wire according to claim 6 or 7, characterized in that, The first waterproof sealing housing is equipped with a wire feeding monitoring mechanism and a first temperature and humidity sensor. The wire feeding monitoring mechanism is installed on the mounting plate for visual dynamic monitoring of the wire feeding process, and the first temperature and humidity sensor is installed on the side wall of the first waterproof sealing housing.

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