Automatic ball valve welding device and method thereof

Abstract

This invention relates to the field of ball valve welding technology and discloses an automatic ball valve welding device and method, including a ball valve body, a connecting rod body, a first clamp, a second clamp, and a heat fusion machine. A moving ring is slidably sleeved on the outside of the first clamp, and a scaling ring is provided inside the first clamp. The scaling ring includes a sleeve and an insert inserted between the sleeve. A first adjusting rod and a second adjusting rod are inserted into the side of the first clamp. The first adjusting rod is connected to the scaling ring, and a pressure control component is provided at the end of the second adjusting rod. The ends of the ball valve body and the connecting rod body are melted by the heat fusion machine, and the melted ends adhere together. The moving ring drives the second adjusting rod to move through the pressure control component, causing the second adjusting rod to push the first adjusting rod to move towards the center, causing the insert to retract into the sleeve. The diameter of the scaling ring is adjusted so that the inner ring of the scaling ring fits and squeezes the extruded material at the welding end, making the extruded material evenly distributed around the welding part, thereby improving the welding effect.

Description

Technical Field

[0001] This invention relates to the field of ball valve welding technology, specifically to an automatic ball valve welding device and method. Background Technology

[0002] Ball valves are a common type of industrial valve used to control the flow and pressure of fluids. They are widely used in petroleum, chemical, and power industries. Automatic ball valve welding equipment is a highly efficient automated device used to produce ball valves. It aims to solve the problems of cumbersome manual operation and low efficiency in the traditional ball valve manufacturing process. The development of automatic ball valve welding equipment is mainly affected by factors such as the advancement of manufacturing technology, the degree of automation, and changes in the process flow.

[0003] With the continuous development of technology and the market, the technology of automatic ball valve welding equipment is constantly being updated and improved, for example, by incorporating artificial intelligence and machine vision to enhance the automation level and precision of the equipment. These technologies integrate equipment and production line data with the manufacturing process, creating a more efficient, safe, and intelligent manufacturing environment. In the traditional ball valve manufacturing process, manual operation mainly involves welding the ball and connecting rod, a time-consuming step with difficulty in guaranteeing precision. To improve the manufacturing efficiency and quality of ball valves, automatic ball valve welding equipment has emerged. This equipment employs advanced mechanical and control technologies to achieve automated welding of the ball and connecting rod. It typically consists of an automatic feeding system, a welding system, and a control system. Through precise motion control and welding specifications, it ensures the welding quality and consistency of the ball valve. The automatic ball valve welding method includes the following steps: First, the ball and connecting rod are loaded into the automatic feeding system; then, the motion control system precisely aligns the ball and connecting rod; next, high-temperature welding technology is used to weld the ball and connecting rod together; finally, a quality inspection system evaluates the welding quality.

[0004] By using automated ball valve welding equipment to weld ball valves and connecting rods, the efficiency and quality of ball valve manufacturing can be significantly improved, reliance on manual operation can be reduced, manufacturing costs can be lowered, and production capacity can be increased. At the same time, automated welding equipment can also improve the safety of the working environment and the occupational safety of operators. Therefore, automated ball valve welding equipment has broad application prospects in the field of industrial valve manufacturing.

[0005] Currently, existing technologies typically consist of a feeding system, a welding system, and a control system. The welding system heats and melts the ball valve and the end of the connecting rod, and then the feeding system pushes the molten ends together to complete the welding of the ball valve. However, the molten part flows downward due to gravity, which can easily cause uneven extrusion of material around the welded part, thus affecting the welding effect. Therefore, this technology does not meet the current requirements. To address this, we propose an automatic ball valve welding device and method. Summary of the Invention

[0006] This invention provides an automatic ball valve welding device and method, which has the beneficial effect of making the extruded material in the welding part uniformly distributed, thereby improving the welding effect. It solves the problem mentioned in the background art that the prior art usually consists of a feeding system, a welding system and a control system. The welding system heats and melts the ball valve and the end of the connecting rod, and then the feeding system pushes the melted end close to stick together to complete the welding of the ball valve. However, the melted part flows downward due to gravity, which easily makes the extruded material in the welding part uneven, thus easily affecting the welding effect.

[0007] This invention provides the following technical solution: an automatic ball valve welding device, comprising a ball valve body, a connecting rod body for welding with the ball valve body, a first clamp for clamping the ball valve body, a second clamp for clamping the connecting rod body, and a heat fusion machine for heating the ball valve body and the connecting rod body. A movable ring is slidably sleeved on the outer side of the first clamp, and a collar is connected to the end of the first clamp. A scaling ring is provided inside the collar. The scaling ring includes a sleeve and an insert slidably inserted between the sleeve and the sleeve. The insert slides within the sleeve to change the diameter of the scaling ring. A first adjusting rod and a second adjusting rod are slidably inserted into the side of the collar. The first adjusting rod is connected to the sleeve, and a pressure control component is provided at the end of the second adjusting rod, which is located between the movable ring and the collar.

[0008] As an optional solution of the automatic ball valve welding equipment of the present invention, the first clamp and the second clamp are both slidably arranged on the worktable, the first clamp and the second clamp are both composed of two semi-cylinders rotatably connected, the outer sides of the first clamp and the second clamp are both provided with locking bolts, and the heat fusion machine is arranged between the first clamp and the second clamp.

[0009] As an optional solution of the automatic ball valve welding equipment of the present invention, wherein: a fixed ring is sleeved on the outer side of the second clamp, the moving ring and the fixed ring are both composed of two semi-circular rings rotatably connected, a slider is installed on the side of the moving ring, the number of the sliders is set to several, the several sliders are slidably inserted into the side of the first clamp, a spring is installed on the side of each slider, one end of the spring is connected to the slider, and the other end of the spring is connected to the first clamp;

[0010] Both the moving ring and the fixed ring are provided with driving components on their sides. Each driving component includes a first push rod and a second push rod connected to the moving ring or the fixed ring. The first push rod is L-shaped and a push plate is installed at the end of each first push rod. The push plate slides against the second push rod. A telescopic member is installed on the outside of each first push rod. The telescopic member is a hydraulic rod and its telescopic end is connected to the first push rod.

[0011] As an optional solution of the automatic ball valve welding equipment of the present invention, the collar is composed of two semi-circular rings rotatably connected, the lower half of the first clamp and the second clamp are slidably arranged on the worktable, the moving ring and the collar open and close together with the first clamp, and the fixed ring opens and close together with the second clamp.

[0012] As an optional solution for the automatic ball valve welding device of the present invention, the number of the sleeve and the insert are both set to several, and the several sleeves and the several inserts are arranged alternately to form a complete ring. The sleeves and the inserts have the same width. The sleeves and the inserts are both arc-shaped. The outer side of each insert is connected to a strip. The strip is slidably inserted into the inner side of the sleeve. Both ends of the insert are slidably inserted into the adjacent sleeve.

[0013] As an optional solution for the automatic ball valve welding device of the present invention, the ends of the first adjusting rod and the second adjusting rod are both connected to wedge blocks, and the inclined surfaces of the two wedge blocks slide and fit together.

[0014] As an optional solution of the automatic ball valve welding device of the present invention, the pressure control component includes a cylinder connected to the side of the collar, and a first piston and a second piston slidably disposed inside the cylinder. The end of the second adjusting rod is disposed inside the cylinder and connected to the first piston. A trigger rod is slidably inserted into the other end of the cylinder. One end of the trigger rod is connected to the second piston, and the other end of the trigger rod is disposed outside the cylinder and close to the moving ring.

[0015] As an optional solution for the automatic ball valve welding equipment described in this invention, wherein: a pressure relief valve is installed on the side of each cylinder and the pressure relief valve is connected to the cylinder; a vent hole is opened on the side of each cylinder and the vent hole is connected to the cylinder; and a sealing bolt is screwed into each vent hole.

[0016] A reset element is sleeved on the outside of the second adjusting rod. The reset element is configured as a reset spring, and its two ends are fixedly connected to the first piston and the collar, respectively.

[0017] This invention also proposes an automatic welding method for ball valves, comprising the following specific steps:

[0018] S1. Heat fusion of ball valve and connecting rod: The ball valve body is clamped and fixed by the first clamp, with the end of the ball valve body slightly protruding outside the expansion ring. The connecting rod body is clamped and fixed by the second clamp, with the end of the connecting rod body slightly protruding outside the second clamp. The heating plate of the heat fusion machine is placed between the ball valve body and the connecting rod body, so that the ends of the ball valve body and the connecting rod body contact the heating plate and melt.

[0019] S2. Welding of ball valve and connecting rod: The molten ends of the ball valve body and the connecting rod body are brought into contact and pressed together. The expansion ring is fitted with the second clamp, and the expansion ring contracts inward to adjust the gap between the welding area and the expansion ring, so that the molten material is evenly distributed in the expansion ring, thereby improving the welding effect by making the material in the welding area uniform.

[0020] S3. Material removal after welding: After the welded area of ​​the ball valve body and the connecting rod body solidifies, the welding of the ball valve body and the connecting rod body is completed. The first clamp and the second clamp can be opened to remove the material.

[0021] As an optional solution of the automatic welding method for ball valves described in this invention, if there are rough edges in the solidified weld area after the ball valve body and the connecting rod body are welded, they can be polished to make the weld area smoother.

[0022] The present invention has the following beneficial effects:

[0023] 1. The automatic ball valve welding equipment and method comprises a first clamp and a second clamp respectively clamping and fixing the ball valve body and the connecting rod body. The ends of both the ball valve body and the connecting rod body are heated and melted by a heat fusion machine, and the fused ends contact and press against each other, causing them to adhere together. Simultaneously, a moving ring drives a second adjusting rod to move via a pressure control component. This causes several moving second adjusting rods to push several first adjusting rods to slide within the collar, and the first adjusting rods move towards the center, thereby pressing several sleeve components towards the center. At the same time, several insert components retract into their corresponding sleeve components, thus adjusting the... The diameter of the scaling ring ensures that the inner ring of the scaling ring adheres and presses against the extruded material at the welding end of the ball valve body and the connecting rod body. This results in a uniform distribution of the extruded material around the welding section under the constraint of the scaling ring. This addresses the problem in existing technologies, which typically consist of a feeding system, a welding system, and a control system. The welding system heats and melts the ball valve and the end of the connecting rod, and the feeding system pushes the melted ends together to complete the welding of the ball valve. However, the melted part flows downwards due to gravity, which can easily lead to uneven extruded material around the welding section, thus affecting the welding effect.

[0024] 2. The automatic ball valve welding equipment and method comprises a moving ring merging with a first clamp and a fixed ring merging with a second clamp. Simultaneously, the merging of the first and second clamps causes a second push rod to contact and adhere to a push plate. A telescopic component pushes the moving and fixed rings. When the telescopic component pushes the moving ring, the spring's limiting effect causes the first clamp and the moving ring to move together. When the first clamp contacts the second clamp, the spring is stretched, and the first and second clamps remain stationary while the moving ring moves on the first clamp. This facilitates the movement of both the first and second clamps and the moving ring.

[0025] 3. The automatic ball valve welding equipment and method involves a moving ring pushing a trigger rod to increase the air pressure between the first and second pistons. This causes the first piston to move under the pressure of the air through the second adjusting rod, thereby adjusting the diameter of the scaling ring. This allows the scaling ring to adhere to and compress the extruded material in the welding zone. When the compression reaches a certain force, the scaling ring stops contracting, causing the first piston to stop. Simultaneously, as the first piston continues to move closer to the second piston, the pressure relief valve opens, allowing excess gas to be discharged from the pressure relief valve. This decompresses the cylinder between the first and second pistons, stopping the pushing of the second piston. This allows for control of the scaling ring's degree of expansion and contraction based on the amount of molten material, thus ensuring the material in the welding zone is as uniform as possible. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 2 This is a schematic diagram of the clamping structure of the present invention.

[0028] Figure 3 This is a schematic diagram of the ball valve body structure of the present invention.

[0029] Figure 4 This is a schematic diagram of the movable ring section structure of the present invention.

[0030] Figure 5 This is a schematic diagram of the three-dimensional structure of the scaling ring of the present invention.

[0031] Figure 6 This is a schematic diagram of the first state structure of the pressure control component of the present invention.

[0032] Figure 7 This is a schematic diagram of the second state structure of the pressure control component of the present invention.

[0033] Figure 8 This is a schematic diagram of the first state cross-sectional structure of the scaling ring of the present invention.

[0034] Figure 9 This is a schematic diagram of the second state cross-sectional structure of the scaling ring according to the present invention.

[0035] Figure 10 This is a three-dimensional structural diagram of the insert of the present invention.

[0036] Figure 11 This is an enlarged structural diagram of point A in the present invention.

[0037] Figure 12 This is an enlarged structural diagram of point B in the present invention.

[0038] In the diagram: 100, ball valve body; 110, connecting rod body; 120, first clamp; 130, second clamp; 131, locking bolt; 140, heat fusion machine; 150, moving ring; 151, fixed ring; 152, slider; 153, spring; 154, drive assembly; 1541, first push rod; 1542, second push rod; 1543, push plate; 1544, telescopic component; 160, collar; 170, scaling ring; 180, sleeve component; 190, insertion component; 191, insertion strip; 200, first adjusting rod; 210, second adjusting rod; 220, pressure control assembly; 221, cylinder; 222, first piston; 223, second piston; 224, trigger rod; 225, pressure relief valve; 226, vent hole; 227, sealing bolt; 228, reset component. Detailed Implementation

[0039] 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.

[0040] Example 1: This example aims to address the problem that existing technologies typically consist of a feeding system, a welding system, and a control system. The welding system heats and melts the ball valve and the end of the connecting rod, and then the feeding system pushes the molten ends together to complete the welding of the ball valve. However, the molten portion flows downwards due to gravity, which can easily cause uneven material extrusion around the welded area, thus affecting the welding effect. Please refer to [link to relevant documentation]. Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 An automatic ball valve welding device includes a ball valve body 100, a connecting rod body 110 for welding with the ball valve body 100, a first clamp 120 for clamping the ball valve body 100, a second clamp 130 for clamping the connecting rod body 110, and a heat fusion machine 140 for heating the ball valve body 100 and the connecting rod body 110. The first clamp 120 and the second clamp 130 are both slidably mounted on a worktable. The first clamp 120 and the second clamp 130 are both composed of two semi-cylinders rotatably connected. Locking bolts 131 are inserted into the outer sides of the first clamp 120 and the second clamp 130. The heat fusion machine 140 is located between the first clamp 120 and the second clamp 130.

[0041] A movable ring 150 is slidably fitted on the outer side of the first clamp 120. A collar 160 is connected to the end of the first clamp 120. The collar 160 is composed of two semi-circular rings rotatably connected. The lower halves of the first clamp 120 and the second clamp 130 are slidably mounted on the worktable. The movable ring 150 and the collar 160 open and close together with the first clamp 120. The fixed ring 151 opens and closes together with the second clamp 130. A scaling ring 170 is provided inside the collar 160. The scaling ring 170 includes a fitting 180 and an insert 190 slidably inserted between the fittings 180. The number of fittings 180 and inserts 190 is set to four, and the four fittings 180 and inserts 190 are also set to four. The sleeve 180 and four inserts 190 are arranged alternately to form a complete ring. The sleeve 180 and the inserts 190 have the same width, so that the sleeve 180 and the inserts 190 can fit together with the second clamp 130. Both the sleeve 180 and the inserts 190 are arc-shaped, and the inner circle of the sleeve 180 is thin. The outer side of each insert 190 is connected to an insert strip 191. The insert strip 191 is slidably inserted into the inner side of the sleeve 180. Both ends of the insert 190 are slidably inserted into the adjacent sleeve 180. The insert 190 slides within the sleeve 180, changing the diameter of the scaling ring 170.

[0042] A first adjusting rod 200 and a second adjusting rod 210 are slidably inserted into the side of the collar 160. The first adjusting rod 200 is fixedly connected to the sleeve 180. Both the end of the first adjusting rod 200 and the end of the second adjusting rod 210 are connected to wedge blocks, and the inclined surfaces of the two wedge blocks slide against each other. A wedge-shaped insert is provided on the inclined surface of the wedge block at the end of the second adjusting rod 210. The wedge-shaped insert is slidably inserted on the inclined surface of the first adjusting rod 200, so that the inclined surfaces at the end of the first adjusting rod 200 and the inclined surfaces at the end of the second adjusting rod 210 always remain in sliding contact. A pressure control component 220 is provided at the end of the second adjusting rod 210, and the pressure control component 220 is located between the moving ring 150 and the collar 160.

[0043] In this embodiment: the first clamp 120 and the second clamp 130 respectively clamp and fix the ball valve body 100 and the connecting rod body 110. The ends of the ball valve body 100 and the connecting rod body 110 are heated and melted by the heat fusion machine 140, and the heat-melted ends contact and press against each other, causing the heat-melted ends to stick together. At the same time, the moving ring 150 drives the second adjusting rod 210 to move through the pressure control component 220, so that the moving second adjusting rods 210 push the first adjusting rods 200 to slide within the collar 160 and move the first adjusting rods 200 towards the center, thereby pressing the sleeves 180 towards the center. At the same time, the inserts 190 retract into their corresponding positions. Within the sleeve 180, the diameter of the scaling ring 170 is adjusted, so that the inner ring of the scaling ring 170 is pressed against the extruded material at the welding end of the ball valve body 100 and the connecting rod body 110. This ensures that the extruded material in the welding part is evenly distributed under the restriction of the scaling ring 170. This addresses the problem that existing technologies typically consist of a feeding system, a welding system, and a control system. The welding system heats and melts the ball valve and the end of the connecting rod, and the feeding system pushes the melted end closer together to complete the welding of the ball valve. However, the melted part flows downward due to gravity, which can easily cause uneven extruded material in the welding part, thus affecting the welding effect.

[0044] Example 2 aims to address the problems of inconvenience in moving the first clamp 120 and the second clamp 130, and inconvenience in moving the moving ring 150. This example is an improvement upon Example 1. For details, please refer to Example 1. Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 The second clamp 130 is fixedly sleeved with a fixed ring 151 on its outer side. Both the movable ring 150 and the fixed ring 151 are composed of two semi-circular rings rotatably connected. The movable ring 150 is equipped with a slider 152 on its side. The number of sliders 152 is set to four. All four sliders 152 are slidably inserted into the side of the first clamp 120. Each slider 152 is equipped with a spring 153 on its side. One end of the spring 153 is fixedly connected to the slider 152, and the other end of the spring 153 is fixedly connected to the first clamp 120.

[0045] Both the moving ring 150 and the fixed ring 151 are provided with a drive assembly 154 on their sides. The drive assembly 154 includes a first push rod 1541 and a second push rod 1542 connected to the moving ring 150 or the fixed ring 151. The first push rod 1541 is L-shaped and a push plate 1543 is installed at the end of the first push rod 1541. The push plate 1543 slides and fits against the second push rod 1542. A telescopic member 1544 is installed on the outside of the first push rod 1541. The telescopic member 1544 is a hydraulic rod or an electric lifting rod. The telescopic end of the telescopic member 1544 is fixedly connected to the first push rod 1541.

[0046] In this embodiment: the movable ring 150 merges together with the first clamp 120, and the fixed ring 151 merges together with the second clamp 130. When the first clamp 120 and the second clamp 130 merge, the second push rod 1542 and the push plate 1543 come into contact and fit together. The movable ring 150 and the fixed ring 151 are pushed by the telescopic member 1544. When the telescopic member 1544 pushes the movable ring 150, the first clamp 120 and the movable ring 150 move together due to the limiting effect of the spring 153. When the first clamp 120 contacts the second clamp 130, the spring 153 is stretched and the first clamp 120 and the second clamp 130 remain stationary while the movable ring moves on the first clamp 120. This makes it easy to move the first clamp 120 and the second clamp 130, and also makes it easy to move the movable ring 150.

[0047] Example 3 aims to address the problem that controlling the scaling of the scaling ring 170 based on the amount of molten material is inconvenient, which can easily affect the uniformity of material in the welding zone. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 12The pressure control assembly 220 includes a cylinder 221 fixedly connected to the side of the collar 160, and a first piston 222 and a second piston 223 slidably disposed inside the cylinder 221. The end of a second adjusting rod 210 is disposed inside the cylinder 221 and fixedly connected to the first piston 222. A trigger rod 224 is slidably inserted into the other end of the cylinder 221. One end of the trigger rod 224 is fixedly connected to the second piston 223, and the other end of the trigger rod 224 is disposed outside the cylinder 221 and near the moving ring 150. A pressure relief valve 225 is installed on the side of each cylinder 221, and the pressure relief valve 225 communicates with the cylinder 221. Each cylinder 221 has a vent hole 226 on its side, which is connected to the cylinder 221. Each vent hole 226 is screwed with a sealing bolt 227. A reset member 228 is sleeved on the outside of the second adjusting rod 210. The reset member 228 is a reset spring. The two ends of the reset member 228 are fixedly connected to the first piston 222 and the collar 160, respectively. When the second adjusting rod 210 moves, it compresses the reset spring. When the moving ring 150 retracts and resets, under the action of the return force of the reset spring, the expansion ring 170 is driven to expand and reset through the second adjusting rod 210 and the first adjusting rod 200.

[0048] In this embodiment: the moving ring 150 pushes the trigger rod 224, increasing the air pressure between the first piston 222 and the second piston 223. Under the action of air pressure, the first piston 222 pushes the first adjusting rod 200 to move through the second adjusting rod 210, thereby adjusting the diameter of the scaling ring 170. This allows the scaling ring 170 to fit and compress the extruded material in the welding zone. When the compression reaches a certain force, the scaling ring 170 stops contracting, causing the first piston 222 to stop. At the same time, as the first piston 222 continues to move closer to the second piston 223, the pressure relief valve 225 opens, allowing excess gas to be discharged from the pressure relief valve 225. This decompresses the cylinder 221 between the first piston 222 and the second piston 223, thereby stopping the pushing of the second piston 223. This allows for control of the scaling degree of the scaling ring 170 according to the amount of molten material, thus making the material in the welding zone as uniform as possible.

[0049] Example 4: An automatic welding method for ball valves, comprising the following specific steps:

[0050] S1. Heat fusion of ball valve and connecting rod: The ball valve body 100 is clamped and fixed by the first clamp 120, and the end of the ball valve body 100 protrudes slightly from the expansion ring 170. The connecting rod body 110 is clamped and fixed by the second clamp 130, and the end of the connecting rod body 110 protrudes slightly from the second clamp 130. The heating plate of the heat fusion machine 140 is placed between the ball valve body 100 and the connecting rod body 110, so that the ends of the ball valve body 100 and the connecting rod body 110 come into contact with the heating plate and melt.

[0051] S2. Welding of ball valve and connecting rod: The molten ends of ball valve body 100 and connecting rod body 110 are brought into contact and pressed together. The expansion ring 170 is attached to the second clamp 130. At the same time, the expansion ring 170 shrinks inward to adjust the gap between the welding area and the expansion ring 170, so that the molten material is evenly distributed in the expansion ring 170, thereby making the material in the welding area uniform and improving the welding effect.

[0052] S3. Material removal after welding: After the welded area of ​​the ball valve body 100 and the connecting rod body 110 solidifies, the welding work of the ball valve body 100 and the connecting rod body 110 is completed. The first clamp 120 and the second clamp 130 can be opened to remove it.

[0053] After the ball valve body 100 and the connecting rod body 110 are fused together, if there are rough edges in the solidified fusion area, they can be polished to make the fusion area smoother.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic ball valve welding device, comprising a ball valve body (100), a connecting rod body (110) for welding with the ball valve body (100), a first clamp (120) for clamping the ball valve body (100), a second clamp (130) for clamping the connecting rod body (110), and a heat fusion machine (140) for heating the ball valve body (100) and the connecting rod body (110), characterized in that: A movable ring (150) is slidably sleeved on the outside of the first clamp (120). A collar (160) is connected to the end of the first clamp (120). A scaling ring (170) is provided inside the collar (160). The scaling ring (170) includes a sleeve (180) and an insert (190) slidably inserted between the sleeve (180). The insert (190) slides inside the sleeve (180) to change the diameter of the scaling ring (170). A first adjusting rod (200) and a second adjusting rod (210) are slidably inserted on the side of the collar (160). The first adjusting rod (200) is connected to the sleeve (180). A pressure control component (220) is provided at the end of the second adjusting rod (210). The pressure control component (220) is located between the movable ring (150) and the collar (160). The first clamp (120) and the second clamp (130) are both slidably mounted on the worktable. A slider (152) is installed on the side of the moving ring (150). The number of sliders (152) is set to several, and several sliders (152) are slidably inserted into the side of the first clamp (120). A spring (153) is installed on the side of each slider (152). One end of the spring (153) is connected to the slider (152), and the other end of the spring (153) is connected to the first clamp (120). A wedge block is connected to the end of the first adjusting rod (200) and the end of the second adjusting rod (210), and the inclined surfaces of the two wedge blocks slide against each other. The pressure control assembly (220) includes a cylinder (221) connected to the side of the collar (160), and a first piston (222) and a second piston (223) slidably disposed inside the cylinder (221). The end of the second adjusting rod (210) is set with The cylinder (221) is located inside and connected to the first piston (222). A trigger rod (224) is slidably inserted into the other end of the cylinder (221). One end of the trigger rod (224) is connected to the second piston (223), and the other end of the trigger rod (224) is located outside the cylinder (221) and close to the moving ring (150). A pressure relief valve (225) is installed on the side of the cylinder (221), and the pressure relief valve (225) is connected to the cylinder (222). 1) The cylinder (221) is connected to the cylinder (221) with a vent hole (226) on the side. The vent hole (226) is connected to the cylinder (221) and a sealing bolt (227) is screwed into the vent hole (226). A reset member (228) is sleeved on the outside of the second adjusting rod (210). The reset member (228) is set as a reset spring. The two ends of the reset member (228) are fixedly connected to the first piston (222) and the collar (160) respectively.

2. The automatic ball valve welding equipment according to claim 1, characterized in that: The first clamp (120) and the second clamp (130) are both composed of two semi-cylinders rotatably connected. Locking bolts (131) are inserted on the outside of the first clamp (120) and the second clamp (130). The heat fusion machine (140) is located between the first clamp (120) and the second clamp (130).

3. The automatic ball valve welding equipment according to claim 1, characterized in that: The second clamp (130) is fitted with a fixed ring (151) on its outer side. Both the movable ring (150) and the fixed ring (151) are composed of two semi-circular rings connected in rotation. Both the moving ring (150) and the fixed ring (151) are provided with a drive assembly (154) on their sides. Each drive assembly (154) includes a first push rod (1541) and a second push rod (1542) connected to the moving ring (150) or the fixed ring (151). The first push rod (1541) is L-shaped and a push plate (1543) is installed at the end of each first push rod (1541). The push plate (1543) slides against the second push rod (1542). A telescopic member (1544) is installed on the outside of each first push rod (1541). The telescopic member (1544) is a hydraulic rod and the telescopic end of the telescopic member (1544) is connected to the first push rod (1541).

4. The automatic ball valve welding equipment according to claim 3, characterized in that: The collar (160) is composed of two semi-circular rings rotatably connected. The lower halves of the first clamp (120) and the second clamp (130) are slidably mounted on the worktable. The moving ring (150) and the collar (160) open and close together with the first clamp (120), and the fixed ring (151) opens and close together with the second clamp (130).

5. The automatic ball valve welding equipment according to claim 1, characterized in that: The number of each sleeve (180) and insert (190) is set to several, and the several sleeves (180) and inserts (190) are arranged alternately to form a complete ring. The sleeves (180) and inserts (190) have the same width. Both the sleeves (180) and inserts (190) are arc-shaped. Inserts (191) are connected to the outer side of each insert (190). Inserts (191) are slidably inserted into the inner side of the sleeves (180). The two ends of the inserts (190) are slidably inserted into the adjacent sleeves (180).

6. An automatic ball valve welding method, comprising an automatic ball valve welding device according to any one of claims 1-5, characterized in that, The specific steps include the following: S1. Heat fusion of ball valve and connecting rod: The ball valve body (100) is clamped and fixed by the first clamp (120), and the end of the ball valve body (100) protrudes slightly from the expansion ring (170). The connecting rod body (110) is clamped and fixed by the second clamp (130), and the end of the connecting rod body (110) protrudes slightly from the second clamp (130). The heating plate of the heat fusion machine (140) is placed between the ball valve body (100) and the connecting rod body (110), so that the ends of the ball valve body (100) and the connecting rod body (110) come into contact with the heating plate and melt. S2. Welding of ball valve and connecting rod: The molten ends of the ball valve body (100) and the connecting rod body (110) are brought into contact and pressed together. The scaling ring (170) is attached to the second clamp (130). At the same time, the scaling ring (170) shrinks inward to adjust the gap between the welding area and the scaling ring (170), so that the molten material is evenly distributed in the scaling ring (170), thereby making the material in the welding area uniform and improving the welding effect. S3. Material removal after welding: After the welded area of ​​the ball valve body (100) and the connecting rod body (110) solidifies, the ball valve body (100) and the connecting rod body (110) have completed the welding work. The first clamp (120) and the second clamp (130) can be opened to remove it.

7. The automatic welding method for a ball valve according to claim 6, characterized in that: After the ball valve body (100) and the connecting rod body (110) are fused together, if there are rough edges in the solidified fusion area, they can be polished to make the fusion area smoother.

Images