Shell circular seam automatic welding equipment for valve machining

Abstract

The invention discloses a shell circular seam automatic welding device for valve machining, and relates to the technical field of valve machining, the shell circular seam automatic welding device comprises a working box and a protective shell fixedly mounted at the top of the working box, a placing door is rotatably mounted on the surface of the protective shell, and a fixing frame is fixedly mounted on the inner wall of the protective shell; and a welding gun is fixedly mounted in the fixing frame, a rotary clamping mechanism is mounted at the top of the working box, and a fixing mechanism is mounted at the top of an inner cavity of the protective shell. According to the shell circular seam automatic welding equipment for valve machining, automatic rotation and stable clamping of valve shells of different sizes are achieved through the rotary clamping mechanism, the tops of the valve shells are fixed through the fixing mechanism, stability of the shells in the welding process is ensured through cooperation of the rotary clamping mechanism and the fixing mechanism, automatic welding of the valve shells is facilitated, handheld operation is not needed, and the welding efficiency is improved. Welding efficiency and quality are improved, and production efficiency reduction caused by manual welding is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of valve processing, and specifically to an automatic welding device for the circumferential seam of the shell in valve processing. Background Art

[0002] In the field of valve manufacturing, the circumferential seam welding of the valve shell is a crucial production link. Traditional circumferential seam welding of valve shells mainly relies on manual operation. The welder holds a welding torch and welds the circumferential seam of the valve shell based on experience.

[0003] The manual welding method has many drawbacks. On the one hand, the welding quality highly depends on the welder's technical level and working state. The operations of different welders or the same welder at different times are likely to cause large fluctuations in parameters such as the width, penetration depth, and strength of the weld seam. The welding quality is uneven, making it difficult to ensure the consistency and stability of the product and increasing the rejection rate. On the other hand, the manual welding efficiency is low. Long-term repetitive work is likely to make the welder fatigued, further reducing the production efficiency and making it difficult to meet the requirements of large-scale industrial production.

[0004] At the same time, during the welding process, the common clip-type structure of traditional valve shells is often simple in structure and single in function, with uneven clamping force distribution. During the welding of the valve shell, the situation of shell shaking and displacement is likely to occur, resulting in weld deviation and affecting the welding quality. Moreover, these clamping structures usually adopt a fixed method, and it is necessary to adjust the angle of the rotating welding torch, which is likely to cause deviation. Summary of the Invention

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: An automatic welding device for the circumferential seam of the shell in valve processing, including:

[0006] A working box, and a protective housing fixedly installed on the top of the working box. A placement door is rotatably installed on the surface of the protective housing. The protective housing protects the internal welding working area to prevent welding spatter, strong light, etc. from causing harm to the surrounding environment and personnel. The placement door facilitates the operator to place and remove the valve shell to be welded. A fixing frame is fixedly installed at the inner wall of the protective housing, and a welding torch is fixedly installed inside the fixing frame. The welding torch melts the welding material by generating a high-temperature arc, thereby welding the circumferential seam of the valve shell together. Support feet are fixedly installed at the four corners of the bottom of the working box, and a bearing is fixedly installed at the middle of the top of the working box;

[0007] A rotary clamping mechanism, which is installed on the top of the working box and is arranged at the welding end of the welding torch. The rotary clamping mechanism is used to place and fix the shell to be welded;

[0008] A fixing mechanism, which is installed at the top of the inner cavity of the protective housing. The fixing mechanism is arranged directly above the rotary clamping mechanism and is used to fix the housing to be welded and rotate together with the rotary clamping mechanism.

[0009] Among them, the rotary clamping mechanism includes a motor, which is fixedly installed at the top of the inner cavity of the working box through a bracket. The output end of the motor is fixedly connected with a transmission shaft, which penetrates through the working box and extends to its top. The transmission shaft is rotatably installed on the inner side of the bearing. The top of the transmission shaft is fixedly installed with an adjusting member, and the top of the adjusting member is fixedly installed with a clamping member. The motor drives the transmission shaft to rotate, and the bearing supports the transmission shaft to make the transmission shaft rotate stably. The transmission shaft drives the adjusting member and the clamping member to rotate the housing to be welded. The adjusting member is used to adjust the height of the clamping member to adapt to valve housings of different sizes.

[0010] The clamping member includes a first fixing disk. An arc-shaped clamping plate is rotatably installed at the inner wall of the first fixing disk. A clamping spring is fixedly connected between the arc-shaped clamping plate and the inner wall of the first fixing disk. The arc-shaped clamping plate can clamp the valve housing under the action of the clamping spring. A limiting folding plate is fixedly installed at the end of the arc-shaped clamping plate. The limiting folding plate is arranged on the outer curved surface of the arc-shaped clamping plate and is used to limit the valve housing to prevent it from sliding during welding.

[0011] Preferably, the number of the arc-shaped clamping plates is six, and the six arc-shaped clamping plates are evenly distributed along the axis of the first fixing disk. The evenly distributed arc-shaped clamping plates make the clamping force more uniform and improve the clamping stability.

[0012] Preferably, the adjusting member includes a supporting rod sleeve and a supporting column. The supporting rod sleeve is fixedly connected to the top of the transmission shaft. The supporting column is fixedly installed at the axis of the bottom of the first fixing disk. Card slots are opened on both sides of the supporting column. Threaded holes are opened on both sides of the supporting rod sleeve. A locking bolt is installed in the threaded hole in a driving manner. By adjusting the position of the supporting column in the supporting rod sleeve, the height of the clamping member can be adjusted to adapt to valve housings of different sizes. When adjustment is needed, loosen the locking bolt, and the supporting column can move up and down in the supporting rod sleeve. After adjusting to the appropriate height, tighten the locking bolt to fix it.

[0013] Preferably, a gasket is fixedly installed at the end of the locking bolt, and the gasket is pressed and adapted to the card slot.

[0014] Preferably, the fixing mechanism includes a cylinder fixedly installed on the top of the protective housing. The telescopic end of the cylinder is fixedly connected to a telescopic rod that penetrates the protective housing and extends into its interior. A buffer is fixedly installed at the bottom of the telescopic rod. The buffer plays a buffering and adjusting role, enabling the fixing part to be more stable when contacting the valve housing and adapting to different heights and shapes of the valve housing. A fixing part is fixedly installed at the bottom of the buffer.

[0015] Preferably, the buffer includes a connecting rod sleeve and a rotating sleeve. The connecting rod sleeve is fixedly connected to the bottom of the telescopic rod. A sliding groove is provided on the inner wall of the connecting rod sleeve. A roller is installed on the side of the rotating sleeve through a rotating shaft and is arranged inside the sliding groove. The roller makes the rotation of the rotating sleeve smoother.

[0016] Preferably, a clamping block is fixedly installed at the bottom of the inner side of the rotating sleeve. A first buffer spring is fixedly installed inside the rotating sleeve. The other end of the first buffer spring is fixedly connected to a sliding column. A limiting groove is provided on the outer surface of the sliding column. The clamping block is slidably installed inside the limiting groove.

[0017] Preferably, the fixing part includes a second fixing disk. The second fixing disk is fixedly installed at the bottom of the sliding column. A second buffer spring is fixedly installed inside the second fixing disk. The other end of the second buffer spring is fixedly connected to a pressing disk. Friction blocks are fixedly installed on the surface of the pressing disk. The pressing disk presses and fixes the valve housing, and the friction blocks increase the friction between the pressing disk and the valve housing.

[0018] Preferably, V-shaped clamping plates are rotatably installed on the side of the pressing disk through rotating shafts. A fixing rod is rotatably installed at the bent part of the V-shaped clamping plates. The fixing rod is fixedly installed on the inner wall of the second fixing disk through a bracket. When the valve housing squeezes the pressing disk to move, the squeezing of the pressing disk drives the V-shaped clamping plates to rotate around the fixing rod. The V-shaped clamping plates are used to clamp the valve housing, enabling the fixing part to rotate along with the valve housing.

[0019] Preferably, the number of the V-shaped clamping plates is eight, and the eight V-shaped clamping plates are evenly distributed along the axis of the second fixing disk, making the clamping force more stable.

[0020] The present invention provides an automatic welding device for the circumferential seam of the valve processing shell. It has the following beneficial effects:

[0021] 1. The automatic welding equipment for the shell circumferential seam of the valve processing, through the setting of the rotating clamping mechanism, the motor drives the transmission shaft to rotate, and then drives the adjusting part and the clamping part to rotate. The adjusting part can adjust the height by loosening the locking bolt and moving the supporting column in the clamping groove to adapt to valve shells of different sizes. In the clamping part, after the valve shell is placed, it squeezes the arc-shaped clamping plate, and the clamping spring provides elastic force to clamp the shell, and the limiting folding plate prevents the shell from sliding. The rotating clamping mechanism realizes the automatic rotation and stable clamping of valve shells of different sizes, facilitates welding, and improves the welding efficiency and quality.

[0022] 2. The automatic welding equipment for the shell circumferential seam of the valve processing, through the setting of the fixing mechanism, the air cylinder pushes the telescopic rod to descend, driving the buffer part and the fixing part to press down. In the buffer part, the roller rolls in the sliding groove, the rotating sleeve can rotate, and the sliding column can move up and down under the action of the buffer spring I. In the fixing part, the pressing disc presses the valve shell under the action of the buffer spring II, and the friction block increases the friction force. The valve shell squeezes the pressing disc and drives the V-shaped clamping plate to rotate around the fixing rod, realizing the fixation of the shell. The fixing mechanism fixes the top of the valve shell to ensure the stability of the shell during the welding process. The buffer part can adapt to different-shaped shells and buffer the pressure, improving the adaptability and stability of the equipment.

[0023] 3. The automatic welding equipment for the shell circumferential seam of the valve processing, through the setting of the adjusting part, loosen the locking bolt, move the supporting column up and down in the supporting rod sleeve to the appropriate position, and then tighten the locking bolt. Fixation is achieved by the gasket squeezing the clamping groove. The adjusting part can flexibly adjust the height of the clamping part according to valve shells of different sizes, enhancing the adaptability of the equipment to workpieces of different specifications and improving the versatility of the equipment.

[0024] 4. The automatic welding equipment for the shell circumferential seam of the valve processing, through the setting of the buffer part, when the telescopic rod presses down, the valve shell squeezes the pressing disc, the valve shell rotates to make the fixing part rotate, the fixing part drives the sliding column and the rotating sleeve to rotate, and at this time the roller rolls in the sliding groove. When the fixing mechanism presses down, the buffer spring can buffer the pressure, adapt to different shapes and surface conditions of the valve shell, avoid damaging the shell, and at the same time ensure the stability of the fixation. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the appearance of the present invention;

[0027] Figure 3 It is a partial sectional view of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the rotating clamping mechanism of the present invention;

[0029] Figure 5 Partial sectional view of the adjusting part of the present invention

[0030] Figure 6 Schematic structural diagram of the clamping part of the present invention

[0031] Figure 7 Schematic structural diagram of the fixing mechanism of the present invention

[0032] Figure 8 Diagram of the positional relationship between the buffer part and the fixing part of the present invention

[0033] Figure 9 Partial sectional view of the buffer part of the present invention

[0034] Figure 10 Schematic structural diagram of the fixing part of the present invention

[0035] In the figure: 1, working box; 2, protective housing; 3, placement door; 4, rotary clamping mechanism; 41, motor; 42, transmission shaft; 43, adjusting part; 431, support rod sleeve; 432, support column; 433, card slot; 434, threaded hole; 435, locking bolt; 436, gasket; 44, clamping part; 441, first fixing plate; 442, arc-shaped clamping plate; 443, clamping spring; 444, limiting folding plate; 5, fixing mechanism; 51, cylinder; 52, telescopic rod; 53, buffer part; 531, connecting rod sleeve; 532, sliding groove; 533, rotating sleeve; 534, roller; 535, sliding column; 536, limiting groove; 537, clamping block; 538, first buffer spring; 54, fixing part; 541, second fixing plate; 542, pressing plate; 543, friction block; 544, V-shaped clamping plate; 545, fixing rod; 546, second buffer spring; 6, fixing frame; 7, welding torch; 8, support feet; 9, bearing. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] The first embodiment is as Figures 1 to 6 shown. The present invention provides a technical solution: an automatic welding device for the circumferential seam of the shell of valve processing, including:

[0038] Working box 1, and a protective housing 2 fixedly installed on the top of the working box 1. A placement door 3 is rotatably installed on the surface of the protective housing 2. The protective housing 2 protects the internal welding work area to prevent welding spatter, strong light, etc. from causing harm to the surrounding environment and personnel. The placement door 3 facilitates the operator to place and remove the valve housing to be welded. A fixing frame 6 is fixedly installed on the inner wall of the protective housing 2. A welding torch 7 is fixedly installed inside the fixing frame 6. The welding torch 7 melts the welding material by generating a high-temperature electric arc to weld the circumferential seam of the rotating valve housing. Support feet 8 are fixedly installed at the four corners of the bottom of the working box 1. A bearing 9 is fixedly installed at the middle of the top of the working box 1. The bearing 9 improves the stability of the equipment;

[0039] Rotary clamping mechanism 4, the rotary clamping mechanism 4 is installed on the top of the working box 1. The rotary clamping mechanism 4 is arranged at the welding end of the welding torch 7. The rotary clamping mechanism 4 is used to place and fix the housing to be welded;

[0040] The rotary clamping mechanism 4 includes a motor 41. The motor 41 is fixedly installed on the top of the inner cavity of the working box 1 through a bracket. The output end of the motor 41 is fixedly connected to a transmission shaft 42. The transmission shaft 42 penetrates through the working box 1 and extends to its top. The transmission shaft 42 is rotatably installed on the inner side surface of the bearing 9. A regulating member 43 is fixedly installed on the top of the transmission shaft 42. A clamping member 44 is fixedly installed on the top of the regulating member 43. The motor 41 drives the transmission shaft 42 to rotate. The bearing 9 supports the transmission shaft 42 to make the transmission shaft 42 rotate stably. The transmission shaft 42 drives the regulating member 43 and the clamping member 44 to rotate the housing to be welded. The regulating member 43 is used to adjust the height of the clamping member 44 to adapt to valve housings of different sizes;

[0041] The clamping member 44 includes a first fixed disk 441. An arc-shaped clamping plate 442 is rotatably installed on the inner wall of the first fixed disk 441. A clamping spring 443 is fixedly connected between the inner wall of the arc-shaped clamping plate 442 and the first fixed disk 441. The arc-shaped clamping plate 442 can clamp the valve housing under the action of the clamping spring 443. A limiting folding plate 444 is fixedly installed at the end of the arc-shaped clamping plate 442. The limiting folding plate 444 is arranged on the outer curved surface of the arc-shaped clamping plate 442. The limiting folding plate 444 is used to limit the valve housing to prevent it from sliding during welding;

[0042] The number of the arc-shaped clamping plates 442 is six, and the six arc-shaped clamping plates 442 are evenly distributed along the axis of the first fixed disk 441. The evenly distributed arc-shaped clamping plates 442 make the clamping force more uniform and improve the stability of clamping;

[0043] The adjusting member 43 includes a supporting rod sleeve 431 and a supporting column 432. The supporting rod sleeve 431 is fixedly connected to the top of the transmission shaft 42. The supporting column 432 is fixedly installed at the center of the bottom of the first fixed disk 441. Card slots 433 are formed on both sides of the supporting column 432, and threaded holes 434 are formed on both sides of the supporting rod sleeve 431. A locking bolt 435 is installed inside the threaded hole 434 in a transmission manner. By adjusting the position of the supporting column 432 in the supporting rod sleeve 431, the height of the clamping member 44 can be adjusted to adapt to valve shells of different sizes.

[0044] A gasket 436 is fixedly installed at the end of the locking bolt 435. The gasket 436 is in extrusion fit with the card slot 433. When adjusting, loosen the locking bolt 435 to move the supporting column 432 up and down in the supporting rod sleeve 431 to a suitable position, and then tighten the locking bolt 435. The clamping member 44 is fixed by the gasket 436 extruding the card slot 433.

[0045] The fixing mechanism 5 is installed at the top of the inner cavity of the protective housing 2. The fixing mechanism 5 is arranged directly above the rotary clamping mechanism 4 and is used to fix the housing to be welded and rotate together with the rotary clamping mechanism 4.

[0046] Second embodiment, on the basis of the first embodiment, please refer to Figures 7 to 10 As shown, the fixing mechanism 5 includes a cylinder 51. The cylinder 51 is fixedly installed at the top of the protective housing 2. The telescopic end of the cylinder 51 is fixedly connected to a telescopic rod 52. The telescopic rod 52 penetrates through the protective housing 2 and extends into its interior. A buffer member 53 is fixedly installed at the bottom of the telescopic rod 52. The buffer member 53 plays a buffering and adjusting role, enabling the fixing member 54 to be more stable when contacting the valve shell, and at the same time adapting to different heights and shapes of the valve shell. A fixing member 54 is fixedly installed at the bottom of the buffer member 53.

[0047] The buffer member 53 includes a connecting rod sleeve 531 and a rotating sleeve 533. The connecting rod sleeve 531 is fixedly connected to the bottom of the telescopic rod 52. A sliding groove 532 is formed on the inner wall of the connecting rod sleeve 531. A roller 534 is installed on the side of the rotating sleeve 533 through a rotating shaft. The roller 534 is arranged inside the sliding groove 532, making the rotation of the rotating sleeve 533 more smooth.

[0048] A block 537 is fixedly installed at the bottom of the inner side of the rotating sleeve 533. A first buffer spring 538 is fixedly installed inside the rotating sleeve 533. The other end of the first buffer spring 538 is fixedly connected to a sliding column 535. A limiting groove 536 is formed on the outer surface of the sliding column 535. The block 537 is slidably installed inside the limiting groove 536 of the sliding column 535. The roller 534 rolls inside the sliding groove 532, and the rotating sleeve 533 slides inside the limiting groove 536 of the sliding column 535 through the block 537. The first buffer spring 538 plays a role in buffering and shock absorption.

[0049] The fixing member 54 includes a second fixing disc 541 which is fixedly installed at the bottom of the sliding column 535. A second buffer spring 546 is fixedly installed inside the second fixing disc 541. The other end of the second buffer spring 546 is fixedly connected to a pressing disc 542. Friction blocks 543 are fixedly installed on the surface of the pressing disc 542. The pressing disc 542 presses and fixes the valve housing, and the friction blocks 543 increase the friction between the pressing disc 542 and the valve housing;

[0050] A V-shaped clamping plate 544 is rotatably installed on the side of the pressing disc 542 through a rotating shaft. A fixing rod 545 is rotatably installed at the bent portion of the V-shaped clamping plate 544. The fixing rod 545 is fixedly installed on the inner wall of the second fixing disc 541 through a bracket. The valve housing squeezes the pressing disc 542 to make it move. Squeezing the pressing disc 542 drives the V-shaped clamping plate 544 to rotate around the fixing rod 545. The V-shaped clamping plate 544 is used to clamp the valve housing, so that the fixing member 54 rotates along with the valve housing;

[0051] The number of the V-shaped clamping plates 544 is eight, and the eight V-shaped clamping plates 544 are evenly distributed along the axis of the second fixing disc 541, making the clamping force more stable. When the fixing member 54 contacts the valve housing, the valve housing squeezes the pressing disc 542, compressing the second buffer spring 546. The friction blocks 543 on the pressing disc 542 increase the friction force with the valve housing. At the same time, the valve housing squeezes the pressing disc 542 to drive the V-shaped clamping plate 544 to rotate around the fixing rod 545. The eight V-shaped clamping plates 544 act together to further fix the valve housing, so that the fixing member 54 rotates along with the valve housing.

[0052] During use, open the placement door 3, and place the valve housing to be welded on the clamping member 44 of the rotary clamping mechanism 4. The six arc-shaped clamping plates 442 initially clamp the valve housing under the action of the clamping springs 443, and the limit folding plate 444 prevents the valve housing from sliding;

[0053] According to the height of the valve housing to be welded, adjust the height of the clamping member 44 through the adjusting member 43, so that the weld position is at the welding end of the welding torch 7. First, loosen the locking bolt 435, move the supporting column 432 up and down in the supporting rod sleeve 431 to a suitable position, and then tighten the locking bolt 435. Fixation is achieved by the gasket 436 squeezing the clamping groove 433;

[0054] Start the cylinder 51. The telescopic end of the cylinder 51 drives the telescopic rod 52 to move downward, and the buffer member 53 and the fixing member 54 descend accordingly. When the fixing member 54 contacts the valve housing, the valve housing squeezes the pressure plate 542, compressing the second buffer spring 546. The friction blocks 543 on the pressure plate 542 increase the friction force with the valve housing. At the same time, the valve housing squeezes the pressure plate 542 to drive the V-shaped clamping plate 544 to rotate around the fixing rod 545. The eight V-shaped clamping plates 544 act together to further fix the valve housing, causing the fixing member 54 to rotate with the valve housing. In the buffer member 53, the roller 534 rolls in the chute 532, and the rotating sleeve 533 slides in the limiting groove 536 of the sliding column 535 through the clamping block 537. The first buffer spring 538 plays a role in buffering and shock absorption;

[0055] At the same time, start the motor 41. The output end of the motor 41 drives the adjusting member 43 and the clamping member 44 to rotate through the transmission shaft 42, thereby driving the fixed valve housing to rotate;

[0056] The welding torch 7 is fixed on the fixing bracket 6 to weld the circumferential seam of the rotating valve housing. The protective housing 2 plays a protective role to prevent welding spatter, etc. from affecting the external environment;

[0057] After welding is completed, turn off the motor 41 and the welding torch 7. The cylinder 51 drives the telescopic rod 52 to rise, separating the fixing member 54 from the valve housing;

[0058] Open the placement door 3, take out the welded valve housing, and complete the entire welding work process.

[0059] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0060] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for the circumferential seam of the shell in valve processing, characterized in that, Including: A working box (1), and a protective housing (2) fixedly installed on the top of the working box (1). A placement door (3) is rotatably installed on the surface of the protective housing (2). A fixing frame (6) is fixedly installed at the inner wall of the protective housing (2). A welding torch (7) is fixedly installed inside the fixing frame (6). Legs (8) are fixedly installed at the four corners of the bottom of the working box (1). A bearing (9) is fixedly installed at the middle of the top of the working box (1); A rotary clamping mechanism (4), which is installed on the top of the working box (1) and is arranged at the welding end of the welding torch (7); A fixing mechanism (5), which is installed on the top inside the protective housing (2) and is arranged directly above the rotary clamping mechanism (4); Among them, the rotary clamping mechanism (4) includes a motor (41), the motor (41) is fixedly installed on the top inside the working box (1) through a bracket. The output end of the motor (41) is fixedly connected to a transmission shaft (42). The transmission shaft (42) penetrates through the working box (1) and extends to its top. The transmission shaft (42) is rotatably installed on the inner side of the bearing (9). An adjusting member (43) is fixedly installed on the top of the transmission shaft (42). A clamping member (44) is fixedly installed on the top of the adjusting member (43); The clamping member (44) includes a first fixing disk (441). An arc-shaped clamping plate (442) is rotatably installed at the inner wall of the first fixing disk (441). A clamping spring (443) is fixedly connected between the arc-shaped clamping plate (442) and the inner wall of the first fixing disk (441). A limiting folding plate (444) is fixedly installed at the end of the arc-shaped clamping plate (442). The limiting folding plate (444) is arranged on the outer curved surface of the arc-shaped clamping plate (442).

2. The automatic welding equipment for the shell circumferential seam in the valve processing according to claim 1, characterized in that: The number of the arc-shaped clamping plates (442) is six, and the six arc-shaped clamping plates (442) are evenly distributed along the axis of the first fixing disk (441).

3. The automatic welding equipment for the shell circumferential seam in the valve processing according to claim 2, characterized in that: The adjusting member (43) includes a support rod sleeve (431) and a support column (432). The support rod sleeve (431) is fixedly connected to the top of the transmission shaft (42). The support column (432) is fixedly installed at the axis of the bottom of the first fixing disk (441). Slots (433) are opened on both sides of the support column (432). Threaded holes (434) are opened on both sides of the support rod sleeve (431). A locking bolt (435) is installed in the threaded hole (434) in a driving manner.

4. An automatic welding device for the shell circumferential seam of a valve processed according to claim 3, characterized in that: A gasket (436) is fixedly installed at the end of the locking bolt (435). The gasket (436) is in extrusion fit with the slot (433).

5. An automatic welding device for the shell circumferential seam of valve processing according to claim 1, characterized in that: The fixing mechanism (5) includes a cylinder (51) fixedly installed on the top of the protective housing (2). The telescopic end of the cylinder (51) is fixedly connected to a telescopic rod (52). The telescopic rod (52) penetrates through the protective housing (2) and extends into its interior. A buffer member (53) is fixedly installed at the bottom of the telescopic rod (52), and a fixing member (54) is fixedly installed at the bottom of the buffer member (53).

6. The automatic welding equipment for the shell circumferential seam in valve processing according to claim 5, characterized in that: The buffer member (53) includes a connecting rod sleeve (531) and a rotating sleeve (533). The connecting rod sleeve (531) is fixedly connected to the bottom of the telescopic rod (52). A chute (532) is formed in the inner wall of the connecting rod sleeve (531). A roller (534) is installed on the side surface of the rotating sleeve (533) through a rotating shaft. The roller (534) is arranged inside the chute (532).

7. An automatic welding equipment for the shell circumferential seam in valve processing according to claim 6, characterized in that: A clamping block (537) is fixedly installed at the bottom of the inner side surface of the rotating sleeve (533). A first buffer spring (538) is fixedly installed inside the rotating sleeve (533). The other end of the first buffer spring (538) is fixedly connected to a sliding column (535). A limiting groove (536) is formed on the outer surface of the sliding column (535). The clamping block (537) is slidably installed inside the limiting groove (536).

8. An automatic welding device for the shell circumferential seam of valve processing according to claim 7, characterized in that: The fixing member (54) includes a second fixing disk (541) fixedly installed at the bottom of the sliding column (535). A second buffer spring (546) is fixedly installed inside the second fixing disk (541). The other end of the second buffer spring (546) is fixedly connected to a pressing disk (542). A friction block (543) is fixedly installed on the surface of the pressing disk (542).

9. An automatic welding equipment for the shell circumferential seam of valve processing according to claim 8, characterized in that: A V-shaped clamping plate (544) is rotatably installed on the side surface of the pressing disk (542) through a rotating shaft. A fixing rod (545) is rotatably installed at the bent portion of the V-shaped clamping plate (544). The fixing rod (545) is fixedly installed on the inner wall of the second fixing disk (541) through a bracket.

10. The automatic welding equipment for the shell circumferential seam of valve processing according to claim 9, characterized in that: The number of the V-shaped clamping plates (544) is eight, and the eight V-shaped clamping plates (544) are evenly distributed along the axis of the second fixing disk (541).

Images