Welding machine for connecting and processing valve body and valve cover of ball valve

Abstract

The invention relates to the technical field of welding machines, and discloses a welding machine for connecting and processing a valve body and a valve cover of a ball valve, the welding machine comprises a table body and welding equipment, the welding equipment is arranged outside the table body, the ball valve and the valve cover which are fixed in a spherical groove can be precisely welded and processed through the welding equipment, and the top of the table body is connected with a base. A spherical groove is formed in an inner cavity of the base, sliding grooves are evenly formed in the inner cavity of the base, clamping plates are connected into the sliding grooves in a sliding mode, the clamping plates and the base are connected with an air cylinder, and a ball valve is placed in the spherical groove of the inner cavity of the base during use. According to the welding machine for connection machining of the valve body and the valve cover of the ball valve, by means of cooperation of the transmission mechanism and the metal elastic piece, the spraying angle of the spraying head can be automatically adjusted, impurities such as welding slag and welding flux residues attached to the exterior of the ball valve are thoroughly washed out while cooling is conducted, and therefore the surface cleanliness of the ball valve is improved, and a good foundation is provided for subsequent use and machining.

Description

Technical Field

[0001] This invention relates to the field of welding machine technology, specifically to a welding machine for processing the connection between a ball valve body and valve cover. Background Technology

[0002] The connection and machining of the ball valve body and the valve cover is a key step in the ball valve manufacturing process. The relevant machining process relies on welding equipment to complete the fixed connection between the valve body and the valve cover. The welding process involves core processes such as clamping and positioning the ball valve, cooling treatment after welding, and cleaning of impurities on the workpiece surface, which directly affect the assembly accuracy, structural stability and subsequent performance of the ball valve.

[0003] Existing welding machines used for connecting ball valve bodies and covers are equipped with clamping structures. However, the clamping points of these structures are not evenly distributed, often resulting in localized stress concentration. This makes it difficult to achieve a comprehensive and stable clamping effect on the ball valve. Under the vibration generated during welding, the ball valve is prone to positional displacement, leading to misalignment of the welded coaxiality between the valve body and cover, thus affecting the accuracy of the welding process. Welding machines are also usually equipped with cooling devices, but the spray coverage of these devices is limited, failing to create a comprehensive, ring-shaped cooling effect. This results in low efficiency in removing residual welding heat, making it difficult to quickly cool the ball valve and causing it to easily deform in high-temperature environments. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a welding machine for connecting the valve body and valve cover of a ball valve, thereby solving the technical problems mentioned above, such as the inability to form a ring-shaped, all-around cooling effect, low efficiency in removing welding residual heat, difficulty in quickly cooling the ball valve, and the tendency of the ball valve to deform under high-temperature environments.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding machine for connecting a ball valve body and valve cover, comprising: a table and a welding device, wherein the welding device is disposed outside the table, and the welding device can perform precise welding processing between the ball valve and the valve cover after the ball valve is fixed in the spherical groove. A base is connected to the top of the table, and a spherical groove is opened in the inner cavity of the base. A sliding groove is evenly opened in the inner cavity of the base, and a clamping plate is slidably connected inside the sliding groove. The clamping plate is connected to the base by a cylinder. In use, the ball valve is placed inside the spherical groove in the inner cavity of the base. Activating the cylinder can drive the clamping plate to slide along the groove and firmly clamp the ball valve. The clamping plates, which are evenly distributed at multiple points, ensure the precise position of the ball valve during welding, avoid displacement caused by welding vibration, and ensure the coaxiality of the valve body and valve cover. The top of the base is connected to an annular water box. A first toothed ring is sleeved on the outside of the annular water box. A first gear is meshed on the outside of the first toothed ring. A motor is connected to the bottom of the first gear and is located at the bottom of the base. After the motor is activated, it can drive the first gear to rotate. Through the meshing transmission between the first gear and the first toothed ring, the annular water box is driven to rotate around the top of the base, so that the nozzle can form an annular spray coverage around the ball valve. The annular water box has nozzles evenly connected inside, and a pump body is installed inside the annular water box. The pump body is connected to the nozzles. After welding is completed, the pump body can be started to draw water from the annular water box and spray it directionally onto the welded ball valve through the nozzles. This quickly removes the residual welding heat from the surface of the ball valve, achieving efficient cooling and preventing the ball valve from deforming due to high temperature. A metal spring is connected between the nozzle and the annular water box. A second toothed ring is connected to the top of the base. During the rotation of the annular water box, the second gear at its bottom engages with the second toothed ring at the top of the base, thereby driving the second gear to rotate. The bottom of the annular water box is provided with a transmission mechanism, which includes a second gear. The top of the second gear is connected to a circular arm, and a slotted block is fitted on the outside of the circular arm. When the second gear rotates, the circular arm at its top rotates together. Through the sliding engagement between the circular arm and the horizontal groove at the bottom of the slotted block, the circular motion is converted into the linear reciprocating motion of the slotted block. A pull rope is connected to the outside of the slotted block, and the other end of the pull rope is connected to the nozzle. When the slotted block makes a linear reciprocating motion, the nozzle is pulled around the connection point of the annular water box by the pull rope. The metal spring connecting the nozzle and the annular water box provides a reverse elastic force, so that the nozzle quickly returns to its original position when the pull rope is relaxed. This reciprocating motion realizes the automatic adjustment of the nozzle spray angle. While cooling down, the nozzle, which keeps changing its angle, thoroughly washes away impurities such as welding slag and welding flux residue attached to the outside of the ball valve, improving the cleanliness of the ball valve surface.

[0006] Preferably, the bottom of the table is connected to a support column, and a swing arm is connected to the outside of the support column via a bearing. A pin is provided between the swing arm and the support column. The welding equipment is connected to the swing arm via bolts. The swing arm connected to the support column via the bearing can be adjusted around the support column. The position of the swing arm is fixed by the pin, thereby driving the welding equipment to adjust the welding angle and position to adapt to the welding requirements of ball valves of different specifications.

[0007] Preferably, the top of the table is uniformly provided with drainage channels, and the bottom of the table is connected to a collection box by a magnet. The wastewater after spraying and cooling can be concentrated and guided through the drainage channels on the top of the table and finally flow into the collection box connected to the magnet at the bottom of the table, so as to realize the unified collection of wastewater and welding slag impurities, which facilitates subsequent treatment and keeps the processing environment clean.

[0008] Preferably, the base is externally connected to an assembly arm, which is connected to the cylinder. The assembly arm provides a stable mounting support for the cylinder, ensuring that the cylinder can output a stable clamping force when driving the clamping plate, thereby improving the structural strength and service life of the clamping mechanism.

[0009] Preferably, the clamping plate is externally connected to a rubber pad, and the end of the clamping plate away from the cylinder is designed with a bevel. The rubber pad on the outside of the clamping plate can increase the friction with the surface of the ball valve, further improving the clamping stability, while avoiding direct contact between the clamping plate and the surface of the ball valve, which could cause scratches. The bevel design at the end of the clamping plate away from the cylinder facilitates the quick placement of the ball valve into the spherical groove of the base, serving as a guide and positioning function.

[0010] Preferably, the bottom of the annular water box is connected to a spherical bearing via a bracket, and the bottom of the spherical bearing is connected to the base via bolts. The spherical bearing connected to the bottom of the annular water box via the bracket reduces the frictional resistance between the annular water box and the base when the annular water box rotates, ensuring the smoothness of the rotation process of the annular water box and reducing mechanical wear.

[0011] Preferably, the bottom of the annular water box is connected to a long track block, the bottom of the long track block is provided with a horizontal groove, and a track slider is slidably connected to the inner cavity of the horizontal groove. The track slider is connected to the slotted block. The sliding cooperation between the horizontal groove at the bottom of the long track block and the track slider provides precise guidance for the linear reciprocating motion of the slotted block, avoids deviation and jamming during the movement of the slotted block, and ensures the smooth operation of the transmission mechanism.

[0012] Preferably, the bottom of the slotted block is provided with a horizontal groove, the inner cavity of the horizontal groove is slidably connected to the outer side of the circular arm, and the horizontal groove at the bottom of the slotted block is slidably connected to the outer side of the circular arm, so as to ensure that the circular arm can stably drive the slotted block to move when it rotates, thereby achieving efficient power transmission.

[0013] Preferably, the bottom of the second gear is connected to a bracket via a spherical bearing. The bracket is connected to the annular water box. The bracket connected to the bottom of the second gear via the spherical bearing provides stable support for the second gear, while ensuring the flexibility of the second gear during rotation and ensuring stable meshing and transmission with the second gear ring.

[0014] Preferably, a control module is provided on the outside of the table body, and the signal terminal of the control module is connected to the motor, assembly arm and welding equipment through a line. The control module on the outside of the table body can centrally control the start and stop of the motor and its speed, the extension and retraction stroke of the cylinder and the welding parameters of the welding equipment, so as to realize the automated linkage control of welding, cooling and cleaning processes, and improve processing efficiency and ease of operation.

[0015] Compared with the prior art, the present invention provides a welding machine for connecting the valve body and valve cover of a ball valve, which has the following advantages: The ball valve body and cover are connected to a welding machine. Multiple evenly distributed clamps securely hold the ball valve, ensuring precise positioning during welding, preventing displacement caused by welding vibration, and guaranteeing coaxiality between the valve body and cover, thus facilitating precise welding. An annular water box rotates around the top circumference of the base, and with evenly distributed nozzles, forms a ring-shaped spray coverage, quickly removing welding heat and achieving efficient cooling, effectively preventing deformation of the ball valve due to high temperatures. Through the cooperation of a transmission mechanism and metal springs, the nozzles automatically adjust the spray angle, thoroughly washing away welding slag, flux residue, and other impurities adhering to the ball valve's exterior while cooling it, improving surface cleanliness and providing a good foundation for subsequent use. Attached Figure Description

[0016] Figure 1 This is a front view of the present invention; Figure 2 This is an external schematic diagram of the present invention; Figure 3 This is a partial cross-sectional view of the base of the present invention; Figure 4 This is a schematic diagram of the external appearance of the annular water box of the present invention; Figure 5 This is a partial cross-sectional view of the transmission mechanism of the present invention.

[0017] In the diagram: 1. Table body; 11. Drainage trough; 12. Support column; 13. Swing arm; 2. Welding equipment; 3. Base; 31. Slide groove; 32. Cylinder; 33. Clamping plate; 34. Assembly arm; 4. Annular water box; 41. First gear ring; 42. First gear; 43. Motor; 44. Second gear ring; 5. Nozzle; 6. Transmission mechanism; 61. Second gear; 62. Round arm; 63. Slotted block; 64. Pull rope; 65. Track block; 66. Track slider. Detailed Implementation

[0018] 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.

[0019] This invention provides a technical solution; please refer to [link / reference]. Figure 1 and Figure 2 A welding machine for connecting a ball valve body and valve cover includes: a table 1 and a welding device 2. The welding device 2 is located outside the table 1. The welding device 2 can perform precise welding between the ball valve and the valve cover after it is fixed in the spherical groove. A base 3 is connected to the top of the table 1. A spherical groove is opened in the inner cavity of the base 3. Sliding grooves 31 are evenly opened in the inner cavity of the base 3. A clamping plate 33 is slidably connected inside the sliding grooves 31. Please see Figure 3 and Figure 4 A cylinder 32 is connected between the clamping plate 33 and the base 3. When in use, the ball valve is placed inside the spherical groove in the inner cavity of the base 3. The cylinder 32 is activated to drive the clamping plate 33 to slide along the slide groove 31 and clamp the ball valve securely. The clamping plates 33, which are evenly distributed at multiple points, ensure the ball valve is accurately positioned during welding, avoid displacement due to welding vibration, and ensure the coaxiality of the valve body and valve cover. An annular water box 4 is connected to the top of the base 3. A first toothed ring 41 is sleeved on the outside of the annular water box 4. A first gear 42 is meshed on the outside of the first toothed ring 41. A motor 43 is connected to the bottom of the first gear 42 and is located at the bottom of the base 3. After the motor 43 is activated, the motor 43 can drive the first gear 42 to rotate. Through the meshing transmission between the first gear 42 and the first toothed ring 41, the annular water box 4 is driven to rotate around the top of the base 3, so that the nozzle 5 can form an annular spray coverage around the ball valve. The annular water box 4 has nozzles 5 evenly connected inside, and a pump body is installed in the inner cavity of the annular water box 4. The pump body is connected to the nozzles 5. After the welding is completed, the pump body can be started to draw water from the inner cavity of the annular water box 4 and spray it directionally onto the welded ball valve through the nozzles 5. This quickly removes the welding residual heat from the surface of the ball valve, achieving efficient cooling and preventing the ball valve from deforming due to high temperature. A metal spring is connected between the nozzles 5 and the annular water box 4. A second toothed ring 44 is connected to the top of the base 3. A transmission mechanism 6 is provided at the bottom of the annular water box 4. The second gear 61 of the transmission mechanism 6 corresponds to the second toothed ring 44. During the rotation of the annular water box 4, the second gear 61 meshes with the second toothed ring 44 at the top of the base 3, thereby driving the second gear 61 to rotate itself. Please see Figure 4 and Figure 5The bottom of the annular water box 4 is provided with a transmission mechanism 6. The transmission mechanism 6 includes a second gear 61. The top of the second gear 61 is connected to a circular arm 62. A slotted block 63 is sleeved on the outside of the circular arm 62. When the second gear 61 rotates, the circular arm 62 at its top rotates together. Through the sliding cooperation between the circular arm 62 and the bottom horizontal groove of the slotted block 63, the circular motion is converted into the linear reciprocating motion of the slotted block 63. A pull rope 64 is connected to the outside of the slotted block 63, and the other end of the pull rope 64 is connected to the nozzle 5. When the slotted block 63 makes a linear reciprocating motion, the pull rope 64 pulls the nozzle 5 to deflect around the connection point of the annular water box 4. The metal spring connecting the nozzle 5 and the annular water box 4 provides a reverse elastic force, so that the nozzle 5 quickly returns to its original position when the pull rope 64 is relaxed. This reciprocating motion realizes the automatic adjustment of the spray angle of the nozzle 5. While cooling down, the nozzle 5, which keeps changing its angle, thoroughly washes away impurities such as welding slag and welding flux residues attached to the outside of the ball valve, improving the cleanliness of the ball valve surface.

[0020] The bottom of the table body 1 is connected to a support column 12. The outside of the support column 12 is connected to a swing arm 13 via a bearing. A pin is provided between the swing arm 13 and the support column 12. The welding equipment 2 is connected to the swing arm 13 via bolts. The swing arm 13, connected to the bearing outside the support column 12, can be adjusted around the support column 12. The position of the swing arm 13 is fixed with the help of the pin, thereby driving the welding equipment 2 to adjust the welding angle and position to adapt to the welding requirements of ball valves of different specifications.

[0021] The top of the table body 1 is evenly provided with drainage grooves 11, and the bottom of the table body 1 is fixedly connected with a magnet. The top of the collection box is provided with a magnetic attraction structure that matches the magnet. The collection box is detachably connected to the magnet at the bottom of the table body 1 through the magnetic attraction structure. The wastewater after spraying and cooling can be concentrated and guided through the drainage grooves 11 on the top of the table body 1, and finally flow into the collection box at the bottom of the table body 1, so as to realize the unified collection of wastewater and welding slag impurities, which facilitates subsequent treatment and keeps the processing environment clean.

[0022] The base 3 is externally connected to an assembly arm 34, which is connected to the cylinder 32. The assembly arm 34 provides a stable mounting support for the cylinder 32, ensuring that the cylinder 32 can output a stable clamping force when driving the clamping plate 33, thereby improving the structural strength and service life of the clamping mechanism.

[0023] The clamping plate 33 is externally connected to a rubber pad, and the end of the clamping plate 33 away from the cylinder 32 is designed with a bevel. The rubber pad on the outside of the clamping plate 33 can increase the friction with the ball valve surface, further improve the clamping stability, and at the same time avoid the clamping plate 33 from directly contacting the ball valve surface and causing scratches. The bevel design at the end of the clamping plate 33 away from the cylinder 32 makes it easy for the ball valve to be quickly placed into the spherical groove of the base 3, which plays a guiding and positioning role.

[0024] The bottom of the annular water box 4 is connected to a spherical bearing via a bracket, and the bottom of the spherical bearing is connected to the base 3 via bolts. The spherical bearing connected to the bottom of the annular water box 4 via the bracket reduces the frictional resistance between the annular water box 4 and the base 3 when the annular water box 4 rotates, ensuring the smoothness of the rotation process of the annular water box 4 and reducing mechanical wear.

[0025] The bottom of the annular water box 4 is connected to a long track block 65. The bottom of the long track block 65 has a horizontal groove. The inner cavity of the horizontal groove is slidably connected to a track slider 66. The track slider 66 is connected to the slotted block 63. The sliding cooperation between the horizontal groove at the bottom of the long track block 65 and the track slider 66 provides precise guidance for the linear reciprocating motion of the slotted block 63, avoids deviation and jamming during the movement of the slotted block 63, and ensures the smooth operation of the transmission mechanism 6.

[0026] The bottom of the slotted block 63 is provided with a horizontal groove, and the inner cavity of the horizontal groove is slidably connected to the outside of the circular arm 62. The horizontal groove at the bottom of the slotted block 63 is slidably connected to the outside of the circular arm 62 to ensure that the circular arm 62 can stably drive the slotted block 63 to move when it rotates, thereby achieving efficient power transmission.

[0027] The bottom of the second gear 61 is connected to a bracket via a spherical bearing. The bracket is connected to the annular water box 4. The bracket connected to the bottom of the second gear 61 via the spherical bearing provides stable support for the second gear 61, while ensuring the flexibility of the second gear 61 during rotation and ensuring stable meshing and transmission with the second gear ring 44.

[0028] The table body 1 is equipped with a control module on its exterior, and the signal terminal of the control module is connected to the motor 43, cylinder 32 and welding equipment 2 through a line. The control module on the exterior of the table body 1 can centrally control the start and stop and speed of the motor 43, the extension and retraction stroke of the cylinder 32 and the welding parameters of the welding equipment 2, so as to realize the automated linkage control of welding, cooling and cleaning processes, and improve processing efficiency and ease of operation.

[0029] This solution places the ball valve inside the spherical groove of the base 3, and starts the cylinder 32 to drive the clamping plate 33 to fix the ball valve. Then, the ball valve and the valve cover are welded together by the welding equipment 2. After the processing is completed, the pump body is started to draw water from the inner cavity of the annular water box 4 and spray it onto the ball valve through the nozzle 5. At the same time, the motor 43 is started to drive the first gear ring 41 and the annular water box 4 to rotate through the first gear 42. The rotation of the annular water box 4 drives the second gear 61 to rotate with friction against the second gear ring 44. The rotating second gear 61 drives the slotted block 63 to move linearly through the circular arm 62. Then, the nozzle 5 is pulled by the pull rope 64. The nozzle 5 is then returned to its original position by the spring plate. This is repeated to adjust the angle, so that while cooling the ball valve, the welding slag on the outside of the ball valve is cleaned by the nozzle 5 which keeps changing the angle.

[0030] 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.

[0031] 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 machine for connecting a ball valve body and valve cover, comprising: A table body (1) and a welding device (2), wherein the welding device (2) is disposed outside the table body (1), characterized in that: a base (3) is connected to the top of the table body (1), the inner cavity of the base (3) has a spherical groove, the inner cavity of the base (3) is evenly provided with sliding grooves (31), a clamping plate (33) is slidably connected inside the sliding groove (31), a cylinder (32) is connected between the clamping plate (33) and the base (3), and an annular water box (4) is connected to the top of the base (3), the outer side of the annular water box (4) is... A first toothed ring (41) is fitted on the outside of the first toothed ring (41), and a first gear (42) is meshed with the outside of the first toothed ring (41). A motor (43) is connected to the bottom of the first gear (42), and the motor (43) is located at the bottom of the base (3). A nozzle (5) is uniformly connected inside the annular water box (4), and a pump body is provided in the inner cavity of the annular water box (4). The pump body is connected to the nozzle (5), and a metal spring is connected between the nozzle (5) and the annular water box (4). A second toothed ring (44) is connected to the top of the base (3). The bottom of the annular water box (4) is provided with a transmission mechanism (6), which includes a second gear (61). The top of the second gear (61) is connected to a round arm (62). A slotted block (63) is sleeved on the outside of the round arm (62). A pull rope (64) is connected to the outside of the slotted block (63), and the other end of the pull rope (64) is connected to the nozzle (5).

2. The welding machine for connecting the ball valve body and valve cover according to claim 1, characterized in that: The bottom of the table body (1) is connected to a support column (12), and the outside of the support column (12) is connected to a swing arm (13) through a bearing. A pin is provided between the swing arm (13) and the support column (12). The welding equipment (2) is connected to the swing arm (13) by bolts.

3. The welding machine for connecting the ball valve body and valve cover according to claim 1, characterized in that: The top of the table body (1) is uniformly provided with drainage grooves (11), and the bottom of the table body (1) is connected to a collection box by a magnet.

4. A welding machine for connecting a ball valve body and valve cover according to claim 1, characterized in that: The base (3) is externally connected to an assembly arm (34), which is connected to the cylinder (32).

5. A welding machine for connecting a ball valve body and valve cover according to claim 1, characterized in that: The clamp (33) is externally connected to a rubber pad, and the end of the clamp (33) away from the cylinder (32) is designed with a slope.

6. A welding machine for connecting a ball valve body and valve cover according to claim 1, characterized in that: The bottom of the annular water box (4) is connected to a spherical bearing by a bracket, and the bottom of the spherical bearing is connected to the base (3) by bolts.

7. A welding machine for connecting a ball valve body and valve cover according to claim 1, characterized in that: The bottom of the annular water box (4) is connected to a long track block (65). The bottom of the long track block (65) is provided with a horizontal groove. The inner cavity of the horizontal groove is slidably connected to a track slider (66). The track slider (66) is connected to the slotted block (63).

8. A welding machine for connecting a ball valve body and valve cover according to claim 1, characterized in that: The bottom of the slotted block (63) is provided with a horizontal groove, and the inner cavity of the horizontal groove is slidably connected to the outer side of the round arm (62).

9. A welding machine for connecting a ball valve body and valve cover according to claim 1, characterized in that: The bottom of the second gear (61) is connected to a bracket via a spherical bearing, and the bracket is connected to the annular water box (4).

10. A welding machine for connecting a ball valve body and valve cover according to claim 1, characterized in that: The table body (1) is equipped with a control module on its exterior, and the signal terminal of the control module is connected to the motor (43), the assembly arm (34) and the welding equipment (2) via a line.

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