Wire clamp feed assembly and method for welding waterwall tubes

Abstract

The present application relates to welding wire clamping feeding technical field, concretely is the welding wire clamping feeding assembly and method for water-cooled wall pipeline welding, including rectangular box, the rectangular box is equipped with feeding mechanism and fast mechanism, and the feeding mechanism includes wedge plate, first disc, first ratchet and first pawl, the wedge plate is arranged in the inside of rectangular box, and the top of wedge plate is fixedly connected with L-shaped plate.The present application does not need to hold the welding wire, can provide support point and limit for the placement of welding wire in the process of welding, makes automatic interval stable feeding, can effectively control length, prevents the phenomenon of raw silk, and when welding ends, can quickly withdraw welding wire from molten pool, avoids the end of welding wire to produce knot, influences subsequent welding, under the action of first disc, second disc and arc block, can keep the welding wire that is bent and deformed on a line, guarantees the end of welding wire can aim at molten pool, reduces the influence on welding quality.

Description

Technical Field

[0001] This invention relates to the field of welding wire clamping and feeding technology, specifically to a welding wire clamping and feeding assembly and method for welding water-cooled wall pipes. Background Technology

[0002] During boiler maintenance, tungsten inert gas welding is used for welding water-cooled walls. Since the welding work space for water-cooled walls is a confined space, welders need to work continuously in the confined space for a long time in order to ensure the maintenance schedule.

[0003] Welding needs to be carried out after the water-cooled wall is joined. During the welding process, the end of the welding wire is placed between the root gaps of the two welding pipes (the welding wire is usually attached to the root of one of the pipes to act as a fulcrum for bearing the force). During the welding process, the welding nozzle swings forward. During the swinging of the welding nozzle, the welding wire is fed intermittently to feed the welding wire into the molten pool. Each feeding length is between 1-2 mm.

[0004] In existing technologies, wire feeding is done by hand, relying entirely on feel and experience. However, due to the long hours of work, welders may experience decreased concentration and numbness in their hands and feet, which can easily lead to unstable wire feeding. Raw wire is a type of incomplete fusion defect, and its harm is similar to that of incomplete fusion, causing stress concentration and great damage. The reason for this is that when adding wire to the molten pool, the length is not properly controlled, and too much wire is added that does not have time to completely melt. Raw wire cannot be detected by welding radiography, which will lead to rework.

[0005] Meanwhile, at the end of welding, the welding wire needs to be quickly removed from the molten pool to avoid lumps forming at the end of the welding wire, which would affect subsequent welding. In a confined space, the welding wire is more likely to be subjected to collisions, which may deform the wire. The feed point at the end of the welding wire may not be able to reach the molten pool accurately due to the deformation (causing deviation), which will also greatly affect the welding quality. Therefore, in order to address the above problems, a welding wire clamping and feeding assembly and method for welding water-cooled wall pipes are proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a welding wire clamping and feeding assembly and method for welding water-cooled wall pipes, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a welding wire clamping and feeding assembly for welding water-cooled wall pipes, comprising a rectangular box, wherein the rectangular box is provided with a feeding mechanism and a quick-retraction mechanism, and the feeding mechanism comprises a wedge plate, a first disc, a first ratchet and a first pawl;

[0008] The wedge plate is disposed on the inner side of the rectangular box. An L-shaped plate is fixedly connected to the top of the wedge plate. A first round rod is rotatably connected to the front side of the L-shaped plate. A first disc is fixedly connected to the front end of the first round rod. A rotating rod is rotatably connected to the front side of the first disc. A first ratchet is fixedly sleeved on the outer side of the rotating rod. A first pawl is rotatably mounted on the front side of the first disc. The end of the first pawl extends to the inner side of the first ratchet to lock the first ratchet.

[0009] The quick-release mechanism includes a second round rod, a second round disc, a coil spring, and a second ratchet;

[0010] The second round rod is rotatably mounted on the rear inner wall of the rectangular box. The second disc is fixedly sleeved on the outer side of the second round rod. The coil spring is wound around and fixed on the outer side of the second round rod. A fixing block is fixedly connected to the rear inner wall of the rectangular box. The end of the coil spring is fixedly connected to the top of the fixing block. The second ratchet is fixedly mounted on the front end of the second round rod. Circular grooves are provided on the outer sides of both the first and second discs. The inner side of the circular grooves is set as a semi-circular arc surface. A rubber ring is embedded on the inner side of the semi-circular arc surface. Welding wires can abut against the outer sides of the first and second discs.

[0011] More preferably, a support block is fixedly connected to the front side of the first disc, a first spring is fixedly connected between the bottom of the support block and the first pawl, a gear is fixedly sleeved on the outer side of the rotating rod, a motor is fixedly connected to the front side of the L-shaped plate, a vertical rod is fixedly connected to the output end of the motor, a connecting rod is rotatably connected to the front side of the vertical rod through a pin, a vertical plate is rotatably connected to the top of the connecting rod, a toothed plate is fixedly connected to the left side of the vertical plate, and the gear meshes with the toothed plate.

[0012] More preferably, a rectangular groove is provided on the right side of the vertical plate, and a first positioning rod is fixedly connected between the top inner wall and the bottom inner wall of the rectangular groove. An L-shaped rod is fixedly connected to the top of the wedge plate, and a rectangular block is fixedly connected to the left side of the L-shaped rod. The rectangular block is slidably sleeved on the outside of the first positioning rod.

[0013] More preferably, a rectangular seat is provided on the right side of the second ratchet, and a second pawl is rotatably connected to the left side of the rectangular seat. The end of the second pawl extends to the inside of the second ratchet and locks the second ratchet. A horizontal block is fixedly connected to the left side of the rectangular seat, and a second spring is fixedly connected between the bottom of the horizontal block and the top of the second pawl.

[0014] Further preferably, the front side of the rectangular box is provided with a pushing mechanism, which includes a T-shaped rod, a second positioning rod, and a pressing roller. The T-shaped rod is movably in contact with the front side of the rectangular box, and two second positioning rods are fixedly installed on the rear side of the T-shaped rod. The rectangular box is slidably sleeved on the outside of the two second positioning rods. The rear ends of the two second positioning rods are fixedly connected to a U-shaped seat. The pressing roller is rotatably installed between the inner walls of the two sides of the U-shaped seat. The pressing roller cooperates with the inclined surface of the wedge plate. The pressing roller can roll on the inclined surface of the wedge plate and generate a pressing force. Under the action of the pressing force, the wedge plate can move upward. Two third springs in a stretched state are fixedly connected between the front side of the U-shaped seat and the front inner wall of the rectangular box. The third springs are movably sleeved on the outside of the corresponding second positioning rods. An observation hole is opened on the front inner wall of the rectangular box.

[0015] More preferably, two third positioning rods are fixedly connected to the rear side of the T-shaped rod. The rear end of the third positioning rod passes through the observation hole and is fixedly connected to the front side of the rectangular base. An L-shaped block is fixedly connected to the inner wall of the front side of the rectangular box. The L-shaped block is slidably sleeved on the outside of the two third positioning rods. Two cylinders are fixedly connected to the inner wall of the bottom of the rectangular box. Two positioning posts are fixedly connected to the bottom of the wedge plate. The cylinders are slidably sleeved on the outside of the corresponding positioning posts. A fourth spring in a stretched state is fixedly connected between the top of the cylinder and the bottom of the wedge plate. The fourth spring is movably sleeved on the outside of the positioning posts.

[0016] More preferably, a switch is fixedly connected to the rear inner wall of the rectangular box, the top of the wedge plate is in contact with the switch, the switch is in the open state, a storage battery is fixedly connected to the top of the wedge plate, two arc-shaped blocks are fixedly connected to both the left and right sides of the rectangular box, a welding wire passes through the two arc-shaped blocks, and a gripping block is fixedly connected to the left side of the rectangular box.

[0017] Further preferably, the bottom of the rectangular box is provided with a support and limiting mechanism, which includes a semi-circular annular block, a first semi-circular annular groove, and a second semi-circular annular groove. The semi-circular annular block is movably sleeved on the outside of a water-cooled wall tube below. The two semi-circular annular blocks contact each other to form a circular annular block. The first semi-circular annular groove is opened at the top of the corresponding semi-circular annular block, and the two first semi-circular annular grooves form a circular annular groove. The second semi-circular annular groove is opened on the outside of the corresponding semi-circular annular block, and the two second semi-circular annular grooves form a circular annular groove. A connecting block is fixedly connected to the bottom of the semi-circular annular block, and the two connecting blocks are connected by bolt threads.

[0018] More preferably, a vertical column is fixedly connected to the bottom of the rectangular box, the end of the vertical column extends into the corresponding first semi-circular annular groove and is fitted with a first ball bearing, the outer side of the vertical column is slidably connected to the side wall of the first semi-circular annular groove, and the first ball bearing rolls in contact with the bottom inner wall of the first semi-circular annular groove. A fixed rod is fixedly connected to the bottom of the rectangular box, and a horizontal column is fixedly connected to the right side of the fixed rod. The end of the horizontal column extends into the second semi-circular annular groove and is fitted with a second ball bearing, the outer side of the horizontal column is slidably connected to the top inner wall and bottom inner wall of the second semi-circular annular groove, and the second ball bearing rolls in contact with the inner side wall of the second semi-circular annular groove.

[0019] This invention also proposes a method for clamping and feeding welding wire for welding water-cooled wall pipes, comprising the following steps:

[0020] Step 1: The continuous operation of the motor can drive the welding wire to be fed automatically and at intervals in a stable manner, which can control the length and prevent the wire from being fed too long and causing stubble. At the same time, the continuous operation of the motor can drive the coil spring to rotate and compress and store energy.

[0021] Step 2: The worker holds the grip block with one hand and presses down on the T-shaped rod to rotate the rectangular box. The rectangular box causes the welding wire to rotate around the center of the water-cooled wall tube.

[0022] Step 3: After welding is completed, release the pressure on the T-shaped rod. The coil spring drives the second disc to rotate rapidly in the forward direction through the second round rod. The rapid forward rotation of the second disc drives the welding wire to move to the left through the rubber ring embedded on its inner side, which can quickly retract the welding wire away from the molten pool and avoid the formation of lumps at the end of the welding wire.

[0023] Step 4: Rotate the bolt in the opposite direction to separate it from the corresponding connecting block. At this point, the semi-circular ring block can be removed from the water-cooled wall tube below.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. In this invention, the first half-turn rotation of the motor drives the connecting rod downward via the vertical rod. The connecting rod drives the toothed plate downward via the vertical plate. The toothed plate drives the rotating rod to rotate via the gear. The rotating rod drives the first disc to rotate via the first ratchet and the first pawl. The rotation of the first disc drives the welding wire to move to the right for feeding via the rubber ring embedded in its inner side. The rightward movement of the welding wire drives the second disc to rotate in the opposite direction. The second disc drives the coil spring to rotate and compress and store force via the second rod. Similarly, when the motor rotates the second half-turn, it drives the vertical rod to rotate upward. Similarly, the rotating rod drives the first ratchet to rotate in the opposite direction. The first disc does not drive the welding wire to move to the right for feeding. The continuous operation of the motor can drive the welding wire to be fed automatically and stably at intervals, which can control the length and prevent the wire from being fed too long and resulting in stubble.

[0026] 2. The continuous operation of the motor can drive the coil spring to rotate and compress and store energy. Under the action of the first disc, the second disc and the arc block, the bent and deformed welding wire can be kept in a straight line for argon arc welding to ensure that the end of the welding wire can be delivered to the molten pool and guarantee the welding quality.

[0027] 3. The worker holds the grip block with one hand and presses down the T-shaped rod to drive the rectangular box to rotate around the center of the water-cooled wall tube. The rectangular box drives the vertical column to slide on the side wall of the annular groove, and the fixed rod drives the horizontal column to roll on the inner side wall of the annular groove, thus completing one circle of welding operation. This provides support points and limits during the welding process, improving the quality of welding.

[0028] 4. After welding is completed, release the pressure on the T-shaped rod. The elastic force of the third spring drives the U-shaped seat forward to release the support of the wedge plate. The elastic force of the fourth spring drives the T-shaped plate downward. The motor stops working. The first round rod drives the first disc downward to separate from the welding wire. At the same time, the U-shaped seat drives the T-shaped rod forward through the second positioning rod, so that the rectangular seat drives the second pawl forward to separate from the second ratchet. The coil spring, which is in a compressed and stored state, resets and drives the second disc to rotate rapidly in the forward direction. The rapid forward rotation of the second disc drives the welding wire to move to the left through the rubber ring embedded on its inner side, which can quickly retract the welding wire and leave the molten pool, avoiding the formation of lumps at the end of the welding wire. Attached Figure Description

[0029] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 This is a schematic diagram of the right-side stereoscopic structure of the present invention;

[0031] Figure 3 This is a bottom-view three-dimensional structural diagram of the rectangular box in this invention;

[0032] Figure 4 This is a front view of the internal three-dimensional structure of the rectangular box in this invention;

[0033] Figure 5 This is a rear view of the internal three-dimensional structure of the rectangular box in this invention;

[0034] Figure 6 for Figure 4 The left view;

[0035] Figure 7 This is a three-dimensional structural diagram of the connection between the trapezoidal plate and the L-shaped plate in this invention;

[0036] Figure 8 for Figure 7 A schematic diagram of the right-side stereoscopic structure;

[0037] Figure 9A three-dimensional schematic diagram of the connection structure between the first disk and the first ratchet;

[0038] Figure 10 A three-dimensional schematic diagram of the connection structure between the second ratchet and the second pawl;

[0039] Figure 11 This is a left view of the first disk in this invention;

[0040] Figure 12 This is a schematic diagram of the three-dimensional structure of two semi-circular ring blocks connected in this invention.

[0041] In the picture:

[0042] 1. Wedge plate; 101. L-shaped plate; 102. First round rod; 103. First disc; 104. Rotating rod; 105. First ratchet; 106. First pawl; 107. Support block; 108. First spring; 109. Gear; 110. Motor; 111. Vertical rod; 112. Connecting rod; 113. Vertical plate; 114. Toothed plate; 115. Rectangular groove; 116. First positioning rod; 117. L-shaped rod; 118. Rectangular block;

[0043] 2. Second round rod; 201. Second disc; 202. Fixing block; 203. Coil spring; 204. Second ratchet; 205. Rectangular seat; 206. Second pawl; 207. Horizontal block; 208. Second spring;

[0044] 3. T-shaped rod; 301. Second positioning rod; 302. U-shaped seat; 303. Extrusion roller; 304. Third spring; 305. Observation hole; 306. Third positioning rod; 307. L-shaped block; 308. Cylinder; 309. Positioning post; 310. Fourth spring;

[0045] 4. Semicircular annular block; 401. First semicircular annular groove; 402. Second semicircular annular groove; 403. Connecting block; 404. Bolt; 405. Vertical column; 406. First ball bearing; 407. Fixing rod; 408. Horizontal column; 409. Second ball bearing;

[0046] 5. Switch; 6. Battery; 7. Arc-shaped block; 8. Grip block; 9. Rectangular box; 10. Water-cooled wall tube; 11. Circular groove. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Example

[0049] Please see Figure 1-12 The present invention provides a technical solution: a welding wire clamping and feeding assembly for welding water-cooled wall pipes, including a rectangular box 9, wherein the rectangular box 9 is provided with a feeding mechanism and a quick-retraction mechanism, and the feeding mechanism includes a wedge plate 1, a first disc 103, a first ratchet 105 and a first pawl 106.

[0050] A wedge plate 1 is disposed inside the rectangular box 9. An L-shaped plate 101 is fixedly connected to the top of the wedge plate 1. A first round rod 102 is rotatably connected to the front side of the L-shaped plate 101. A first disc 103 is fixedly connected to the front end of the first round rod 102. A rotating rod 104 is rotatably connected to the front side of the first disc 103. A first ratchet 105 is fixedly sleeved on the outer side of the rotating rod 104. A first pawl 106 is rotatably mounted on the front side of the first disc 103. The end of the first pawl 106 extends to the inner side of the first ratchet 105 to lock the first ratchet 105.

[0051] The quick-release mechanism includes a second round rod 2, a second round disc 201, a coil spring 203, and a second ratchet 204;

[0052] The second round rod 2 is rotatably mounted on the rear inner wall of the rectangular box 9. The second disc 201 is fixedly sleeved on the outer side of the second round rod 2. The coil spring 203 is wound around and fixed on the outer side of the second round rod 2. A fixing block 202 is fixedly connected to the rear inner wall of the rectangular box 9. The end of the coil spring 203 is fixedly connected to the top of the fixing block 202. The second ratchet 204 is fixedly mounted on the front end of the second round rod 2. The outer sides of the first disc 103 and the second disc 201 are both provided with annular grooves 11. The inner side of the annular groove 11 is set as a semi-circular arc surface. A rubber ring is embedded in the inner side of the semi-circular arc surface. Welding wire can abut the outer sides of the first disc 103 and the second disc 201.

[0053] This invention eliminates the need for hand-held wire feeding. During welding, it provides support points and limits for the placement of the welding wire, enabling stable automatic interval feeding, effectively controlling the length, and preventing stubble. At the end of welding, it can quickly retract the welding wire away from the molten pool, avoiding lumps at the end of the wire that could affect subsequent welding. Under the action of the first disc 103, the second disc 201, and the arc-shaped block 7, the bent and deformed welding wire can be kept in a straight line, ensuring that the end of the welding wire is aligned with the molten pool, reducing the impact on welding quality.

[0054] In this embodiment, specifically: a support block 107 is fixedly connected to the front side of the first disc 103, a first spring 108 is fixedly connected between the bottom of the support block 107 and the first pawl 106, a gear 109 is fixedly sleeved on the outer side of the rotating rod 104, a motor 110 is fixedly connected to the front side of the L-shaped plate 101, a vertical rod 111 is fixedly connected to the output end of the motor 110, a connecting rod 112 is rotatably connected to the front side of the vertical rod 111 via a pin, a vertical plate 113 is rotatably connected to the top end of the connecting rod 112, a toothed plate 114 is fixedly connected to the left side of the vertical plate 113, and the gear 109 meshes with the toothed plate 114;

[0055] In this embodiment, specifically: a rectangular groove 115 is provided on the right side of the vertical plate 113, a first positioning rod 116 is fixedly connected between the top inner wall and the bottom inner wall of the rectangular groove 115, an L-shaped rod 117 is fixedly connected to the top of the wedge plate 1, a rectangular block 118 is fixedly connected to the left side of the L-shaped rod 117, and the rectangular block 118 is slidably sleeved on the outside of the first positioning rod 116.

[0056] During use, the operator holds the grip block 8 with one hand and presses down the T-shaped rod 3, while holding the argon arc welding machine with the other hand to perform welding operations. At this time, the top of the wedge plate 1 is in contact with the switch 5, and the switch 5 is in the start state. The motor 110 works, and the motor 110 rotates the first half turn, causing the vertical rod 111 to rotate downward. The vertical rod 111 causes the connecting rod 112 to move downward. The connecting rod 112 causes the vertical plate 113 to move. The vertical plate 113 causes the first positioning rod 116 to move. The rectangular block 118 performs positioning operations on the first positioning rod 116. The vertical plate 113 causes the toothed plate 114 to move downward. As the toothed plate 114 moves downward, it causes the gear 109 to rotate forward. The gear 109 causes the rotating rod 104 to rotate. The rotating rod 104 causes the first ratchet 105 to rotate. The first ratchet 105 rotates forward, and through the first pawl 106, it causes the first disc 103 to rotate. The rotation of the first disc 103 causes the welding wire to move to the right through the rubber ring embedded on its inner side to perform material feeding operations.

[0057] The welding wire moves to the right, causing the second disc 201 to rotate in the opposite direction. The second disc 201 rotates in the opposite direction, causing the second rod 2 to rotate in the opposite direction. The second rod 2 drives the second ratchet 204 to rotate in the opposite direction. The second ratchet 204 does not engage with the second pawl 206. The second ratchet 204 rotates and passes over the second pawl 206. At the same time, the rotation of the second rod 2 causes the coil spring 203 to rotate and compress to store force.

[0058] Similarly, when the motor 110 rotates half a turn, it drives the vertical rod 111 to rotate upward. The vertical rod 111 drives the connecting rod 112 to move upward. The connecting rod 112 drives the vertical plate 113 to move. The vertical plate 113 drives the toothed plate 114 to move upward. As the toothed plate 114 moves upward, it drives the gear 109 to rotate in the opposite direction. The gear 109 drives the rotating rod 104 to rotate. The rotating rod 104 drives the first ratchet 105 to rotate in the opposite direction. The first ratchet 105 does not engage with the first pawl 106. The first ratchet 105 rotates and passes over the first pawl 106. At this time, the first pawl 106 will not drive the first disc 103 to rotate. The first disc 103 will not drive the welding wire to move to the right to perform the feeding operation. At this time, the motor 110 continues to work and can drive the welding wire to be fed automatically and stably at intervals. It can control the length and prevent the wire from being fed too long and causing stubble. At the same time, the motor 110 continues to work and can drive the coil spring 203 to rotate and compress and store energy.

[0059] In this embodiment, specifically: a rectangular seat 205 is provided on the right side of the second ratchet 204, and a second pawl 206 is rotatably connected to the left side of the rectangular seat 205. The end of the second pawl 206 extends to the inner side of the second ratchet 204 to lock the second ratchet 204. A horizontal block 207 is fixedly connected to the left side of the rectangular seat 205, and a second spring 208 is fixedly connected between the bottom of the horizontal block 207 and the top of the second pawl 206.

[0060] In this embodiment, specifically: a pushing mechanism is provided on the front side of the rectangular box 9. The pushing mechanism includes a T-shaped rod 3, a second positioning rod 301, and a squeezing roller 303. The T-shaped rod 3 is in contact with the front side of the rectangular box 9. Two second positioning rods 301 are fixedly installed on the rear side of the T-shaped rod 3. The rectangular box 9 is slidably sleeved on the outside of the two second positioning rods 301. A U-shaped seat 302 is fixedly connected to the rear end of the two second positioning rods 301. The squeezing roller 303 is rotatably installed between the inner walls of the two sides of the U-shaped seat 302. The squeezing roller 303 cooperates with the inclined surface of the wedge plate 1. The squeezing roller 303 can roll on the inclined surface of the wedge plate 1 and generate squeezing force. Under the action of squeezing force, the wedge plate 1 can move upward. Two third springs 304 in a stretched state are fixedly connected between the front side of the U-shaped seat 302 and the front inner wall of the rectangular box 9. The third springs 304 are movably sleeved on the outside of the corresponding second positioning rods 301. An observation hole 305 is opened on the front inner wall of the rectangular box 9.

[0061] In this embodiment, specifically: two third positioning rods 306 are fixedly connected to the rear side of the T-shaped rod 3. The rear end of the third positioning rod 306 passes through the observation hole 305 and is fixedly connected to the front side of the rectangular seat 205. An L-shaped block 307 is fixedly connected to the inner wall of the front side of the rectangular box 9. The L-shaped block 307 is slidably sleeved on the outside of the two third positioning rods 306. Two cylinders 308 are fixedly connected to the inner wall of the bottom of the rectangular box 9. Two positioning posts 309 are fixedly connected to the bottom of the wedge plate 1. The cylinders 308 are slidably sleeved on the outside of the corresponding positioning posts 309. A fourth spring 310 in a stretched state is fixedly connected between the top of the cylinder 308 and the bottom of the wedge plate 1. The fourth spring 310 is movably sleeved on the outside of the positioning posts 309.

[0062] After welding is completed, the pressure on the T-shaped rod 3 is released. At this time, the third spring 304, which was in a compressed state, returns to its original position. The elastic force of the third spring 304 drives the U-shaped seat 302 to move forward. The U-shaped seat 302 drives the extrusion roller 303 to move forward and release the support on the wedge plate 1. At this time, the fourth spring 310, which was in a compressed state, returns to its original position. The elastic force of the fourth spring 310 drives the wedge plate 1 to move downward. The wedge plate 1 drives the two positioning pins 309 to move downward. The cylinder 308 positions the positioning pins 309. The wedge plate 1 moves downward and separates from the switch 5, so that the switch 5 is closed and the motor 110 stops working. At the same time, the wedge plate 1 drives the L-shaped plate 101 to move downward. The L-shaped plate 101 drives the first round rod 102 to move downward. The first round rod 102 drives the first disc 103 to move downward and separate from the welding wire.

[0063] At the same time, the U-shaped seat 302 drives the two second positioning rods 301 to move forward, the second positioning rods 301 drive the T-shaped rod 3 to move forward, the T-shaped rod 3 drives the two third positioning rods 306 to move forward, the third positioning rods 306 drive the rectangular seat 205 to move forward, the rectangular seat 205 drives the second pawl 206 to move forward and separate from the second ratchet 204, the second pawl 206 no longer limits the second ratchet 204, at this time the coil spring 203 in the compressed and stored state resets, the coil spring 203 drives the second round rod 2 to rotate quickly in the forward direction, the second round rod 2 drives the second disc 201 to rotate quickly in the forward direction, the second disc 201 rotates quickly in the forward direction and drives the welding wire to move to the left through the rubber ring embedded in its inner side, which can quickly retract the welding wire and leave the molten pool, avoiding the formation of lumps at the end of the welding wire;

[0064] Next, rotate the bolt 404 in the opposite direction to separate it from the corresponding connecting block 403. At this point, the semi-circular ring block 4 can be removed from the water-cooled wall tube 10 below. Similarly, welding can be performed on another set of water-cooled wall tubes 10.

[0065] In this embodiment, specifically: a switch 5 is fixedly connected to the inner rear wall of the rectangular box 9, the top of the wedge plate 1 is in contact with the switch 5, the switch 5 is in the open state, a storage battery 6 is fixedly connected to the top of the wedge plate 1, two arc blocks 7 are fixedly connected to both the left and right sides of the rectangular box 9, the welding wire passes through the two arc blocks 7, and a gripping block 8 is fixedly connected to the left side of the rectangular box 9.

[0066] Under the action of the first disc 103, the second disc 201 and the arc block 7, the bent and deformed welding wire can be kept in a straight line, and the argon arc welding operation can be carried out to ensure that the end of the welding wire can be delivered to the molten pool and ensure the welding quality.

[0067] In this embodiment, specifically: the bottom of the rectangular box 9 is provided with a support limiting mechanism, which includes a semi-circular annular block 4, a first semi-circular annular groove 401 and a second semi-circular annular groove 402. The semi-circular annular block 4 is movably sleeved on the outside of a water-cooled wall tube 10 below. The two semi-circular annular blocks 4 contact each other to form a circular annular block. The first semi-circular annular groove 401 is opened on the top of the corresponding semi-circular annular block 4. The two first semi-circular annular grooves 401 form a circular annular groove. The second semi-circular annular groove 402 is opened on the outside of the corresponding semi-circular annular block 4. The two second semi-circular annular grooves 402 form a circular annular groove. The bottom of the semi-circular annular block 4 is fixedly connected with a connecting block 403. The two connecting blocks 403 are threadedly connected by bolts 404.

[0068] In this embodiment, specifically: a vertical column 405 is fixedly connected to the bottom of the rectangular box 9. The end of the vertical column 405 extends into the corresponding first semi-circular annular groove 401 and is fitted with a first ball bearing 406. The outer side of the vertical column 405 is slidably connected to the side wall of the first semi-circular annular groove 401. The first ball bearing 406 rolls in contact with the bottom inner wall of the first semi-circular annular groove 401. A fixing rod 407 is fixedly connected to the bottom of the rectangular box 9. A horizontal column 408 is fixedly connected to the right side of the fixing rod 407. The end of the horizontal column 408 extends into the second semi-circular annular groove 402 and is fitted with a second ball bearing 409. The outer side of the horizontal column 408 is slidably connected to the top inner wall and the bottom inner wall of the second semi-circular annular groove 402. The second ball bearing 409 rolls in contact with the inner side wall of the second semi-circular annular groove 402.

[0069] The worker holds the grip block 8 with one hand and presses down the T-shaped rod 3 to rotate the rectangular box 9. The rectangular box 9 causes the welding wire to rotate around the center of the water-cooled wall tube 10. The rectangular box 9 causes the vertical column 405 to slide on the side wall of the annular groove formed by the two first semi-circular annular grooves 401. The first ball 406 rolls on the bottom inner wall of the annular groove. The rectangular box 9 causes the fixed rod 407 to rotate. The fixed rod 407 causes the horizontal column 408 to slide in the annular groove formed by the two second semi-circular annular grooves 402. The second ball 409 rolls on the inner side wall of the annular groove. This allows one revolution of welding to be completed. During the welding process, it provides support points and limits, improving the welding quality.

[0070] This invention also proposes a method for clamping and feeding welding wire for welding water-cooled wall pipes, comprising the following steps:

[0071] Step 1: The continuous operation of motor 110 can drive the welding wire to be fed automatically and at intervals in a stable manner, which can control the length and prevent the wire from being fed too long and causing stubble. At the same time, the continuous operation of motor 110 can drive the coil spring 203 to rotate and compress and store energy.

[0072] Step 2: The worker holds the grip block 8 with one hand and presses down the T-shaped rod 3 to drive the rectangular box 9 to rotate. The rectangular box 9 drives the welding wire to rotate around the center of the water-cooled wall tube 10.

[0073] Step 3: After welding is completed, release the pressure on the T-shaped rod 3. The coil spring 203 drives the second disc 201 to rotate rapidly in the forward direction through the second round rod 2. The rapid forward rotation of the second disc 201 drives the welding wire to move to the left through the rubber ring embedded on its inner side, which can quickly retract the welding wire away from the molten pool and avoid the formation of lumps at the end of the welding wire.

[0074] Step 4: Rotate the bolt 404 in the opposite direction to separate it from the corresponding connecting block 403. At this point, the semi-circular ring block 4 can be removed from the water-cooled wall tube 10 below.

[0075] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding wire holding and feeding assembly for welding of water-cooled wall pipes, comprising a rectangular box (9), characterized in that: The rectangular box (9) is internally provided with a feeding mechanism and a quick collecting mechanism, the feeding mechanism comprising a wedge-shaped plate (1), a first disc (103), a first ratchet wheel (105) and a first pawl (106); The wedge-shaped plate (1) is arranged on the inner side of the rectangular box (9), the top of the wedge-shaped plate (1) is fixedly connected with an L-shaped plate (101), the front side of the L-shaped plate (101) is rotatably connected with a first circular rod (102), the front end of the first circular rod (102) is fixedly connected with the first disc (103), the front side of the first disc (103) is rotatably connected with a rotating rod (104), the outer side of the rotating rod (104) is fixedly sleeved with the first ratchet wheel (105), the first pawl (106) is rotatably installed on the front side of the first disc (103), the end of the first pawl (106) extends to the inner side of the first ratchet wheel (105) to clamp the first ratchet wheel (105); The quick collecting mechanism comprises a second circular rod (2), a second disc (201), a coil spring (203) and a second ratchet wheel (204); The second circular rod (2) is rotatably installed on the inner wall of the rear side of the rectangular box (9), the second disc (201) is fixedly sleeved on the outer side of the second circular rod (2), the coil spring (203) is wound and fixed on the outer side of the second circular rod (2), the rear inner wall of the rectangular box (9) is fixedly connected with a fixed block (202), the end of the coil spring (203) is fixedly connected with the top of the fixed block (202), the second ratchet wheel (204) is fixedly installed on the front end of the second circular rod (2), the outer sides of the first disc (103) and the second disc (201) are both provided with a circular annular groove (11), the inner side of the circular annular groove (11) is provided as a semicircular arc surface, a rubber ring is embedded in the inner side of the semicircular arc surface, the outer sides of the first disc (103) and the second disc (201) can abut against a welding wire; The front side of the first disc (103) is fixedly connected with a supporting block (107), the first spring (108) is fixedly connected between the bottom of the supporting block (107) and the first pawl (106), the outer side of the rotating rod (104) is fixedly sleeved with a gear (109), the front side of the L-shaped plate (101) is fixedly connected with a motor (110), the output end of the motor (110) is fixedly connected with a vertical rod (111), the front side of the vertical rod (111) is rotatably connected with a connecting rod (112) through a pin shaft, the top end of the connecting rod (112) is rotatably connected with a vertical plate (113), the left side of the vertical plate (113) is fixedly connected with a toothed plate (114), the gear (109) is engaged with the toothed plate (114); The right side of the second ratchet wheel (204) is provided with a rectangular seat (205), the left side of the rectangular seat (205) is rotatably connected with a second pawl (206), the end of the second pawl (206) extends to the inner side of the second ratchet wheel (204) to clamp the second ratchet wheel (204), the left side of the rectangular seat (205) is fixedly connected with a cross block (207), the bottom of the cross block (207) and the top of the second pawl (206) are fixedly connected with a second spring (208) in a stretched state; The front side of the rectangular box (9) is provided with a pushing mechanism, the pushing mechanism comprises a T-shaped rod (3), a second positioning rod (301) and a squeezing roller (303), the T-shaped rod (3) is movably contacted with the front side of the rectangular box (9), two second positioning rods (301) are fixedly installed on the rear side of the T-shaped rod (3), the rectangular box (9) is slidably sleeved on the outer sides of the two second positioning rods (301), the rear ends of the two second positioning rods (301) are fixedly connected with a U-shaped seat (302), the squeezing roller (303) is rotatably installed between the inner walls of the two sides of the U-shaped seat (302), the squeezing roller (303) is matched with the inclined surface of the wedge-shaped plate (1), the squeezing roller (303) can roll on the inclined surface of the wedge-shaped plate (1) and generate a squeezing force, under the action of the squeezing force, the wedge-shaped plate (1) can move upward, two third springs (304) in a stretched state are fixedly connected between the front side of the U-shaped seat (302) and the front inner wall of the rectangular box (9), the third spring (304) is movably sleeved on the outer side of the corresponding second positioning rod (301), and the front inner wall of the rectangular box (9) is provided with an observation hole (305). The rear side of the T-shaped rod (3) is fixedly connected with two third positioning rods (306), the rear ends of the third positioning rods (306) penetrate through the observation hole (305) and are fixedly connected with the front side of the rectangular seat (205), the front inner wall of the rectangular box (9) is fixedly connected with an L-shaped block (307), the L-shaped block (307) is slidably sleeved on the outer sides of the two third positioning rods (306), the bottom inner wall of the rectangular box (9) is fixedly connected with two cylinders (308), the bottom of the wedge-shaped plate (1) is fixedly connected with two positioning columns (309), the cylinder (308) is slidably sleeved on the outer side of the corresponding positioning column (309), and the top of the cylinder (308) and the bottom of the wedge-shaped plate (1) are fixedly connected with a fourth spring (310) in a stretched state. The rear inner wall of the rectangular box (9) is fixedly connected with a switch (5), the top of the wedge-shaped plate (1) is in contact with the switch (5), the switch (5) is in an open state, and the left and right sides of the rectangular box (9) are fixedly connected with two arc-shaped blocks (7), and the welding wire passes between the two arc-shaped blocks (7).

2. The welding wire holding and feeding assembly for water cooled wall tubing welding as claimed in claim 1, wherein: The right side of the vertical plate (113) is provided with a rectangular groove (115), and the first positioning rod (116) is fixedly connected between the top inner wall and the bottom inner wall of the rectangular groove (115).

3. The welding wire holding and feeding assembly for water cooled wall tubing welding as claimed in claim 2, wherein: The top of the wedge-shaped plate (1) is fixedly connected with a battery (6), and the left side of the rectangular box (9) is fixedly connected with a handle block (8).

4. The welding wire holding and feeding assembly for water cooled wall tubing welding as claimed in claim 3, wherein: The bottom of the rectangular box (9) is provided with a supporting and limiting mechanism, the supporting and limiting mechanism comprises a semicircular ring block (4), a first semicircular ring groove (401) and a second semicircular ring groove (402), the semicircular ring block (4) is movably sleeved on the outside of one water-cooled wall pipe body (10) below, and the two semicircular ring blocks (4) are in contact to form a circular ring block, the first semicircular ring groove (401) is formed on the top of the corresponding semicircular ring block (4), and the two first semicircular ring grooves (401) form a circular ring groove, the second semicircular ring groove (402) is formed on the outside of the corresponding semicircular ring block (4), and the two second semicircular ring grooves (402) form a circular ring groove, and the bottom of the semicircular ring block (4) is fixedly connected with a connecting block (403), and the two connecting blocks (403) are threadedly connected through bolts (404).

5. The welding wire holding and feeding assembly for water cooled wall tubing welding as claimed in claim 4, wherein: The bottom of the rectangular box (9) is fixedly connected with a vertical column (405), the end of the vertical column (405) extends into the corresponding first semicircular ring groove (401) and is embedded with a first ball (406), the outside of the vertical column (405) is in sliding connection with the sidewall of the first semicircular ring groove (401), the first ball (406) is in rolling contact with the bottom inner wall of the first semicircular ring groove (401), the bottom of the rectangular box (9) is fixedly connected with a fixed rod (407), the right side of the fixed rod (407) is fixedly connected with a horizontal column (408), the end of the horizontal column (408) extends into the second semicircular ring groove (402) and is embedded with a second ball (409), the outside of the horizontal column (408) is in sliding connection with the top inner wall and the bottom inner wall of the second semicircular ring groove (402), and the second ball (409) is in rolling contact with the inner sidewall of the second semicircular ring groove (402).

6. A method of welding wire holding and feeding for welding of water-cooled wall pipes, characterized in that The steps of using the welding wire clamping and feeding assembly for water-cooled wall pipe welding as claimed in claim 5 are as follows: Step 1: the continuous work of the motor (110) can drive the welding wire to be automatically and stably fed at intervals, the length can be well controlled, and the phenomenon of excess wire feeding can be prevented; meanwhile, the continuous work of the motor (110) can drive the coil spring (203) to rotate and compress the stored force; Step 2: the worker holds the handle block (8) and presses the T-shaped rod (3) to drive the rectangular box (9) to rotate, and the rectangular box (9) drives the welding wire to rotate with the center of the water-cooled wall pipe body (10) as the center. Step 3: When the welding is completed, the pressing force on the T-shaped rod (3) is released, the coil spring (203) drives the second disc (201) to rotate forward quickly through the second circular rod (2), the second disc (201) rotates forward quickly through the rubber ring embedded in the inner side to drive the welding wire to move left, which can quickly retract the welding wire away from the molten pool to avoid the end of the welding wire from producing a knot; Step 4: Reverse rotation of the bolt (404) and the corresponding connecting block (403) is separated, at this time, the semicircular ring block (4) can be taken off from the lower water-cooled wall pipe body (10).

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