Valve body processing and welding device and use method thereof

Abstract

The present invention belongs to the field of valve body processing technology, and in particular to a valve body processing welding device and a method for using the same. In view of the large deviation in temperature between the welding point and other parts, which makes the valve body susceptible to temperature stress during welding, and further affects the quality of valve body processing welding, the following scheme is proposed, including: a processing pedestal, a mounting groove is provided on the top of the processing pedestal, and a fixing bracket is fixedly connected to the outer wall of one side of the processing pedestal; a processing fixing module, and the processing fixing module is arranged inside the mounting groove. The valve body processing welding device disclosed in the present invention and a method for using the same have the function of improving the valve body processing welding effect. When performing welding operations, the device can preheat the unwelded parts and keep the welded parts warm at the same time, thereby reducing the temperature difference between the welding point and the unwelded and welded parts, thereby reducing the influence of temperature stress on welding and improving welding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of valve body processing, and in particular to a valve body processing welding device and a use method thereof. Background Art

[0002] The valve body is a major component in a valve. The valve is a device that controls the direction, pressure, and flow of the fluid. It can make the liquid, gas, and powder media in the piping and equipment flow or stop. At the same time, the valve body is the main pressure-bearing component of the valve. As the core structure of the fluid control system, its design and manufacturing quality directly affect the sealing, strength and service life of the valve.

[0003] Valve body processing and welding is a core process in valve manufacturing, mainly used to connect valve body components, repair defects and enhance the performance of key parts.

[0004] The ends of existing valve bodies usually need to be welded with flanges. During welding, the temperature of the welding point is higher than that of other parts to be welded or already welded. Therefore, during welding, there will be a large temperature deviation between the welding point and other parts, which makes the valve body susceptible to temperature stress during welding, thereby affecting the quality of valve body processing and welding. Summary of the Invention

[0005] The present invention discloses a valve body processing and welding device and its use method, aiming to solve the technical problem in the background technology that the temperature of the welding point and other parts will have a large deviation, resulting in the valve body being easily affected by temperature stress during welding, thereby affecting the valve body processing and welding quality.

[0006] The present invention provides a valve body processing and welding device, comprising:

[0007] A processing platform, the top of which is provided with a mounting groove, and an outer wall of one side of the processing platform is fixedly connected with a fixing bracket;

[0008] A processing and fixing module is provided inside the mounting groove and is used to fix the flange and the valve body and ensure that they are on the same axis;

[0009] Welding the valve body, the welding valve body is located above the processing platform, and the welding valve body includes a valve body and a flange;

[0010] A stress welding module is located on a fixed bracket and is used to control the temperature of unwelded and welded parts, thereby reducing the temperature difference between the welding point and the unwelded and welded parts;

[0011] A welding gun body, the welding gun body being arranged outside the welding valve body;

[0012] The stress welding module includes:

[0013] A lower annular rail, the lower annular rail is located outside the processing platform, an upper annular rail is provided above the lower annular rail, and the inner walls of the lower annular rail and the upper annular rail are fixedly connected with a fixed gear ring;

[0014] Two connecting brackets, the two connecting brackets are respectively arranged on the lower annular rail and the upper annular rail, the two connecting brackets are fixedly connected to the electric push rods, and the output ends of the two electric push rods are fixedly connected to the mounting frame;

[0015] Two guide brackets, the two guide brackets are respectively arranged on the lower annular rail and the upper annular rail, the two guide brackets are fixedly connected to the electric rod, and the output ends of the two electric rods are fixedly connected to the fixed frame;

[0016] Two winding wheels are respectively arranged on two fixed frames. A preheating soft frame belt and a heat-insulating soft frame belt are respectively arranged on the two winding wheels. One end of the preheating soft frame belt and the heat-insulating soft frame belt are respectively arranged on two mounting frames.

[0017] In a preferred embodiment, the stress welding module further comprises:

[0018] An arc-shaped rail seat is arranged on the top of the fixed bracket, an arc-shaped sliding frame is arranged on the arc-shaped rail seat, and the lower annular rail is arranged on the arc-shaped sliding frame;

[0019] Two mounting uprights are respectively arranged on the arc-shaped rail seat and the arc-shaped sliding frame, and the outer walls of the two mounting uprights are provided with a same telescopic oil cylinder.

[0020] In a preferred solution, the stress welding module further includes:

[0021] Two electric lifting rods, both of which are fixedly connected to the arc-shaped sliding frame, the output ends of the two electric lifting rods are fixedly connected to the same lifting frame, and the upper annular rail is provided on the lifting frame;

[0022] Two winding motors are respectively arranged on two fixed frames, and the output shafts of the two winding motors are respectively connected to the tops of the two winding wheels through couplings.

[0023] In a preferred embodiment, the stress welding module further comprises:

[0024] Two guide wheels, the two guide wheels are respectively arranged on two fixed frames, and the outer walls of the two guide wheels are respectively in contact with the outer walls of the preheating soft frame belt and the heat-insulating soft frame belt;

[0025] Two heating power supply components are respectively arranged inside the two installation frames. Two heating circuits are respectively arranged on the two heating power supply components, and the four heating circuits are respectively arranged on the preheating soft frame belt and the insulation soft frame belt.

[0026] In a preferred embodiment, the stress welding module further comprises:

[0027] A plurality of heating rods, each of which is provided on the preheating soft frame belt and the heat-insulating soft frame belt, and each of which is connected to four heating circuits;

[0028] Two universal motors are respectively arranged on two guide brackets. The output shafts of the two universal motors are connected to gear parts through couplings. The two gear parts are respectively engaged with two fixed gear rings.

[0029] In a preferred embodiment, the processing and fixing module includes:

[0030] A servo motor is arranged at the bottom of the mounting groove;

[0031] A fixed disc seat is arranged on the inner wall of the mounting groove and is located above the servo motor. Three movable guide grooves are opened on the top of the fixed disc seat;

[0032] The threaded plate is connected to the output shaft of the servo motor through a coupling. The threaded plate is located inside the fixed disc seat. Three movable guide seats are provided on the threaded plate. The outer walls of the three movable guide seats are respectively in contact with the inner walls of the three movable guide grooves.

[0033] In a preferred solution, the processing and fixing module further includes:

[0034] Three flange fixing parts, the three flange fixing parts are respectively arranged on the three movable guide seats;

[0035] Three fixed supports, the three fixed supports are respectively arranged on the three movable guide seats, the three fixed supports are each provided with an adjustment guide port and a threaded hole, and the three threaded holes are respectively connected to the three adjustment guide ports;

[0036] Three adjusting guide rods, the three adjusting guide rods are respectively arranged on the inner walls of the three adjusting guide ports, and one end of the three adjusting guide rods is provided with a valve body fixing piece;

[0037] Three locking screws are respectively arranged inside the three threaded holes.

[0038] In a preferred solution, the top of the arc-shaped slide frame is fixedly connected to a welding guide rail, a welding gear ring is provided on the welding guide rail, the inner wall of the welding gear ring is fixedly connected to a welding bracket, the welding bracket is fixedly connected to an electric telescopic rod, the output end of the electric telescopic rod is fixedly connected to a welding gun bracket, the welding gun body is provided on the welding gun bracket, and the top of the arc-shaped slide frame is fixedly connected to a driving motor, the output shaft of the driving motor is connected to a driving gear through a coupling, and the driving gear is meshed with the welding gear ring.

[0039] A valve body processing and welding method, using the valve body processing and welding device as described above, comprises the following steps:

[0040] Step 1: Place the welded valve body on a processing platform, and fix the welded valve body and the flange by processing and fixing the module;

[0041] Step 2: During welding, the electric telescopic rod is operated to adjust the position of the welding gun body to the welding point. At this time, the driving motor and the welding gun body are operated to perform welding.

[0042] Step 3: During the welding process, the stress welding module is operated to preheat the unwelded parts and keep the welded parts warm as the welding progresses until the welding is completed.

[0043] From the above, it can be seen that the valve body processing and welding device provided by the present invention has the function of improving the valve body processing and welding effect. When performing welding operations, the device can preheat the unwelded parts and at the same time keep the welded parts warm, thereby reducing the temperature difference between the welding point and the unwelded parts and the welded parts, thereby reducing the impact of temperature stress on welding and improving welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the overall structure of a valve body processing and welding device proposed by the present invention;

[0045] Figure 2 This is a schematic side view of the overall structure of a valve body processing and welding device proposed by the present invention;

[0046] Figure 3 This is a schematic diagram of the overall top view of a valve body processing and welding device proposed by the present invention;

[0047] Figure 4 This is a structural schematic diagram of a stress welding module of a valve body processing welding device proposed by the present invention;

[0048] Figure 5 This is a schematic diagram of the combined structure of a thermal insulation soft frame belt and a preheating soft frame belt of a valve body processing and welding device proposed by the present invention;

[0049] Figure 6 This is a schematic diagram of the combined structure of a guide wheel and a winding wheel of a valve body processing and welding device proposed by the present invention;

[0050] Figure 7 This is a schematic diagram of the combined structure of a welding gear ring and a drive motor of a valve body processing and welding device proposed by the present invention;

[0051] Figure 8 This is a structural schematic diagram of a processing and fixing module of a valve body processing and welding device proposed by the present invention;

[0052] Figure 9 This is a schematic diagram of the combined structure of a movable guide seat and a threaded plate of a valve body processing and welding device proposed by the present invention;

[0053] Figure 10 This is a schematic diagram of the disassembled structure of the adjusting guide rod and fixed support of a valve body processing and welding device proposed by the present invention.

[0054] In the figure: 1. Processing platform; 2. Welding guide rail; 3. Welding valve body; 4. Stress welding module; 401. Upper ring rail; 402. Fixed gear ring; 403. Connecting bracket; 404. Electric push rod; 405. Lower ring rail; 406. Electric rod; 407. Guide bracket; 408. Mounting pole; 409. Arc rail seat; 410. Arc slide frame; 411. Electric lifting rod; 412. Lifting frame; 413. Insulation soft frame belt; 414. Preheating soft frame belt; 415. Telescopic cylinder; 416. Heating rod; 417. Heating circuit; 418. Heating power supply; 419. Mounting frame; 420. Guide wheel; 421. Winding wheel; 422. Universal motor; 423. Gear part; 424. Fixed frame; 425. Winding motor; 5. Fixed bracket; 6. Processing fixed module; 601. Servo motor; 602. Fixed disc seat; 603. Movable guide groove; 604. Flange fixing part; 605. Movable guide seat; 606. Threaded plate; 607. Locking screw; 608. Adjustment guide port; 609. Valve body fixing part; 610. Adjustment guide rod; 611. Threaded hole; 612. Fixed support; 7. Welding bracket; 8. Welding gun body; 9. Welding gun bracket; 10. Electric telescopic rod; 11. Welding gear ring; 12. Driving motor; 13. Driving gear; 14. Mounting slot. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0056] The valve body processing and welding device disclosed in the present invention is mainly used in scenarios where there is a large temperature deviation between the welding point and other parts, which makes the valve body susceptible to temperature stress during welding, thereby affecting the valve body processing and welding quality.

[0057] Reference Figures 1-10 , a valve body processing and welding device, comprising:

[0058] A processing platform 1, a mounting groove 14 is provided on the top of the processing platform 1, and a fixing bracket 5 is fixedly connected to the outer wall of one side of the processing platform 1;

[0059] The processing and fixing module 6 is arranged inside the mounting groove 14 and is used to fix the flange and the valve body and ensure that they are on the same axis;

[0060] Welding the valve body 3, the welding valve body 3 is located above the processing platform 1, and the welding valve body 3 includes a valve body and a flange;

[0061] Stress welding module 4, which is located on the fixed bracket 5. The stress welding module 4 is used to control the temperature of the unwelded and welded parts, thereby reducing the temperature difference between the welding point and the unwelded and welded parts;

[0062] A welding gun body 8 is provided on the outside of the welding valve body 3;

[0063] Stress welding module 4 includes:

[0064] The lower annular rail 405 is located outside the processing platform 1. The upper annular rail 401 is provided above the lower annular rail 405. The inner walls of the lower annular rail 405 and the upper annular rail 401 are fixedly connected with a fixed gear ring 402.

[0065] Two connecting brackets 403, the two connecting brackets 403 are respectively arranged on the lower annular rail 405 and the upper annular rail 401, the two connecting brackets 403 are fixedly connected to the electric push rods 404, and the output ends of the two electric push rods 404 are fixedly connected to the mounting frame 419;

[0066] Two guide brackets 407, the two guide brackets 407 are respectively arranged on the lower annular rail 405 and the upper annular rail 401, the two guide brackets 407 are fixedly connected to the electric rod 406, and the output ends of the two electric rods 406 are fixedly connected to the fixed frame 424;

[0067] Two winding wheels 421 are respectively arranged on two fixed frames 424, and a preheating soft frame belt 414 and an insulation soft frame belt 413 are respectively arranged on the two winding wheels 421. One end of the preheating soft frame belt 414 and the insulation soft frame belt 413 are respectively arranged on two mounting frames 419.

[0068] Reference Figures 1-6 In a preferred embodiment, the stress welding module 4 further includes:

[0069] The arc-shaped rail seat 409 is arranged on the top of the fixed bracket 5. The arc-shaped slide frame 410 is arranged on the arc-shaped rail seat 409, and the lower annular rail 405 is arranged on the arc-shaped slide frame 410;

[0070] Two mounting poles 408 are respectively arranged on the arc-shaped rail seat 409 and the arc-shaped sliding frame 410 . The outer walls of the two mounting poles 408 are provided with a same telescopic cylinder 415 .

[0071] In the present invention, the stress welding module 4 further includes:

[0072] Two electric lifting rods 411, both of which are fixedly connected to the arc-shaped sliding frame 410, and the output ends of the two electric lifting rods 411 are fixedly connected to the same lifting frame 412, and the upper annular rail 401 is set on the lifting frame 412;

[0073] Two winding motors 425 are respectively arranged on the two fixed frames 424 , and the output shafts of the two winding motors 425 are respectively connected to the tops of the two winding wheels 421 through couplings.

[0074] In the present invention, the stress welding module 4 further includes:

[0075] Two guide wheels 420, the two guide wheels 420 are respectively arranged on two fixed frames 424, and the outer walls of the two guide wheels 420 are in contact with the outer walls of the preheating soft frame belt 414 and the heat-insulating soft frame belt 413 respectively;

[0076] Two heating power supply components 418 are respectively arranged inside two mounting frames 419. Two heating circuits 417 are respectively provided on the two heating power supply components 418. The four heating circuits 417 are respectively arranged on the preheating soft frame belt 414 and the insulation soft frame belt 413.

[0077] In the present invention, the stress welding module 4 further includes:

[0078] Multiple heating rods 416, the multiple heating rods 416 are respectively arranged on the preheating soft frame belt 414 and the heat-insulating soft frame belt 413, and the multiple heating rods 416 are respectively connected to four heating circuits 417;

[0079] Two universal motors 422 are respectively arranged on the two guide brackets 407 . The output shafts of the two universal motors 422 are connected to the gear members 423 through couplings. The two gear members 423 are respectively engaged with the two fixed gear rings 402 .

[0080] Specifically, before welding, the electric push rod 404 located on the lower annular rail 405 drives the installation frame 419 to move so that it contacts the welding valve body 3. At the same time, the electric rod 406 on the lower annular rail 405 operates, so that the fixed frame 424 drives the guide wheel 420 to move, and further makes the preheating soft frame belt 414 contact the valve body. Then, the universal motor 422 on the lower annular rail 405 operates, so that the guide bracket 407 and the fixed frame 424 move. At the same time, the winding motor 425 operates to relax the preheating soft frame belt 414 until the circumference of the preheating soft frame belt 414 is set at the unwelded part. At this time, the heating power supply 418 is started and heats the heating rod 416 through the heating circuit 417 to preheat the unwelded part.

[0081] During welding, the universal motor 422 and the winding motor 425 on the lower annular rail 405 rotate in reverse, so that the winding wheel 421 winds up the preheated soft frame belt 414, so that the unwelded portion is gradually exposed, and at the same time, the welding gun body 8 welds the exposed portion;

[0082] As the number of welded parts increases, the electric lifting rod 411 drives the upper annular rail 401 to descend, so that the thermal insulation soft frame belt 413 and the preheating soft frame belt 414 on the upper annular rail 401 are at the same horizontal plane. Then, the electric push rod 404 and the electric rod 406 on the upper annular rail 401 operate, so that the mounting frame 419 and the fixed frame 424 on the upper annular rail 401 move until the mounting frame 419 and the thermal insulation soft frame belt 413 contact the welding valve body 3. Then, the universal motor 422 and the winding motor 425 on the upper annular rail 401 operate, so that the thermal insulation soft frame belt 413 is loosened, and the welded parts are covered and heated.

[0083] When the circumference is welded to the end portion, the telescopic oil cylinder 415 operates to move the arc-shaped sliding frame 410 on the arc-shaped rail seat 409, thereby driving the upper annular rail 401 and the lower annular rail 405 to move, so that the preheating soft frame belt 414 and the insulation soft frame belt 413 are deflected as a whole for a distance, so that the unwelded portion of the end is exposed until the welding is completed;

[0084] In a specific application scenario, the stress welding module 4 is suitable for the valve body processing and welding process, that is, the stress welding module 4 can preheat the unwelded parts during welding and keep the welded parts warm at the same time, thereby reducing the temperature difference between the welding point and the unwelded parts and the welded parts, thereby reducing the impact of temperature stress on welding and improving welding quality. In addition, during preheating and heat preservation, the device can gradually reduce the range of the preheating part and gradually increase the range of the heat preservation part as welding proceeds, so as to ensure the preheating and heat preservation effect of the device during welding, further increasing the use effect of the device. At the same time, when in use, the device can be adjusted according to the size of the valve body and the flange, thereby improving the applicability of the device.

[0085] It should be noted that when the circumference is welded to the end part, the device can deflect the position of the preheating soft frame belt 414 and the insulation soft frame belt 413 as a whole for a certain distance through the telescopic cylinder 415, so that the unwelded part of the end is exposed, avoiding the device from obstructing the welding gun body 8, thereby ensuring the completion of the welding operation.

[0086] Reference Figure 3 and Figures 8-10 In a preferred embodiment, the processing and fixing module 6 includes:

[0087] The servo motor 601 is disposed at the bottom of the mounting slot 14;

[0088] The fixed disc base 602 is disposed on the inner wall of the mounting groove 14 and is located above the servo motor 601. Three movable guide grooves 603 are formed on the top of the fixed disc base 602.

[0089] The threaded plate 606 is connected to the output shaft of the servo motor 601 through a coupling. The threaded plate 606 is located inside the fixed disk base 602. Three movable guide seats 605 are provided on the threaded plate 606. The outer walls of the three movable guide seats 605 are in contact with the inner walls of the three movable guide grooves 603 respectively.

[0090] In the present invention, the processing and fixing module 6 also includes:

[0091] Three flange fixing members 604, the three flange fixing members 604 are respectively arranged on three movable guide seats 605;

[0092] Three fixed supports 612, the three fixed supports 612 are respectively arranged on the three movable guide seats 605, and the three fixed supports 612 are each provided with an adjustment guide port 608 and a threaded hole 611, and the three threaded holes 611 are respectively connected to the three adjustment guide ports 608;

[0093] Three adjusting guide rods 610, which are respectively arranged on the inner walls of the three adjusting guide ports 608, and one end of each of the three adjusting guide rods 610 is provided with a valve body fixing member 609;

[0094] Three locking screws 607 are respectively disposed inside the three threaded holes 611 .

[0095] Specifically, when in use, the locking screw 607 is rotated so that the adjusting guide rod 610 can move inside the adjusting guide port 608. At this time, the adjusting guide rod 610 is moved according to the inner diameter difference between the flange and the valve body to adjust the vertical spacing between the valve body fixing member 609 and the flange fixing member 604. After the adjustment, the adjusting guide rod 610 is locked by the locking screw 607. Then, the welded valve body 3 is set on the processing platform 1. At this time, the servo motor 601 is started. The servo motor 601 can drive the threaded plate 606 to rotate, and then the threaded plate 606 drives the movable guide seat 605 to move, so that the movable guide seat 605 moves inside the movable guide groove 603 and gradually expands outward until the movable guide seat 605 drives the valve body fixing member 609 and the flange fixing member 604 to fix the valve body and the flange.

[0096] In a specific application scenario, the processing and fixing module 6 is suitable for the valve body processing, welding and fixing link, that is, the processing and fixing module 6 can synchronously fix the flange and the valve body when in use, and adopts a multi-point fixing method when fixing. After fixation, the flange and the valve body can be on the same axis, thereby avoiding their offset, thereby further increasing the welding effect and welding quality of the device during welding. At the same time, when fixing, the device can adjust the vertical spacing between the valve body fixing part 609 and the flange fixing part 604 according to the inner diameter difference between the flange and the valve body to ensure the fixing effect and increase the applicability of the device.

[0097] Reference Figure 1 、 Figure 3 and Figure 7 In a preferred embodiment, the top of the arc-shaped slide frame 410 is fixedly connected to a welding guide rail 2, a welding gear ring 11 is provided on the welding guide rail 2, the inner wall of the welding gear ring 11 is fixedly connected to a welding bracket 7, the welding bracket 7 is fixedly connected to an electric telescopic rod 10, the output end of the electric telescopic rod 10 is fixedly connected to a welding gun bracket 9, the welding gun body 8 is provided on the welding gun bracket 9, and the top of the arc-shaped slide frame 410 is fixedly connected to a drive motor 12, the output shaft of the drive motor 12 is connected to a drive gear 13 through a coupling, and the drive gear 13 is engaged with the welding gear ring 11.

[0098] Specifically, during welding, the electric telescopic rod 10 operates to adjust the position of the welding gun body 8, change the size of its welding movement path, and until it reaches the welding point, the drive motor 12 and the welding gun body 8 operate, and the drive motor 12 can drive the drive gear 13 to rotate. Since the drive gear 13 is engaged with the welding gear ring 11, the welding gear ring 11 can be rotated, and further drive the welding bracket 7, the electric telescopic rod 10, the welding gun bracket 9 and the welding gun body 8 to rotate to perform welding operations;

[0099] In a specific application scenario, the electric telescopic rod 10 is used to adjust the position of the welding gun body 8 to adjust the path size of the welding gun body 8 during welding, and then adjust it according to the size of the processed valve body to increase the applicability of the device.

[0100] A valve body processing and welding method, using the valve body processing and welding device as described above, comprises the following steps:

[0101] Step 1: During use, the locking screw 607 is rotated to allow the adjusting guide rod 610 to move inside the adjusting guide port 608. At this time, the adjusting guide rod 610 is moved according to the inner diameter difference between the flange and the valve body to adjust the vertical spacing between the valve body fixing part 609 and the flange fixing part 604. After the adjustment, the adjusting guide rod 610 is locked by the locking screw 607. Then, the welded valve body part 3 is set on the processing platform 1. At this time, the servo motor 601 is started. The servo motor 601 can drive the threaded plate 606 to rotate, and then the threaded plate 606 drives the movable guide seat 605 to move, so that the movable guide seat 605 moves inside the movable guide groove 603 and gradually expands outward until the movable guide seat 605 drives the valve body fixing part 609 and the flange fixing part 604 to fix the valve body part and the flange.

[0102] Step 2: During welding, the electric telescopic rod 10 operates to adjust the position of the welding gun body 8, change the size of its welding moving path, and until it reaches the welding point, the drive motor 12 and the welding gun body 8 operate, and the drive motor 12 can drive the drive gear 13 to rotate. Since the drive gear 13 is engaged with the welding gear ring 11, the welding gear ring 11 can be rotated, and further drive the welding bracket 7, the electric telescopic rod 10, the welding gun bracket 9 and the welding gun body 8 to rotate to perform welding operations;

[0103] Step 3: Before welding, the electric push rod 404 on the lower annular rail 405 drives the installation frame 419 to move so that it contacts the welding valve body 3. At the same time, the electric rod 406 on the lower annular rail 405 runs, so that the fixed frame 424 drives the guide wheel 420 to move, and further makes the preheating soft frame belt 414 contact the valve body. After that, the universal motor 422 on the lower annular rail 405 runs, so that the guide bracket 407 and the fixed frame 424 move. At the same time, the winding motor 425 runs to relax the preheating soft frame belt 414 until the circumference of the preheating soft frame belt 414 is set at the unwelded part. At this time, the heating power supply 418 is started and heats the heating rod 416 through the heating circuit 417 to preheat the unwelded part.

[0104] During welding, the universal motor 422 and the winding motor 425 on the lower annular rail 405 rotate in reverse, so that the winding wheel 421 winds up the preheated soft frame belt 414, so that the unwelded portion is gradually exposed, and at the same time, the welding gun body 8 welds the exposed portion;

[0105] As the number of welded parts increases, the electric lifting rod 411 drives the upper annular rail 401 to descend, so that the thermal insulation soft frame belt 413 and the preheating soft frame belt 414 on the upper annular rail 401 are at the same horizontal plane. Then, the electric push rod 404 and the electric rod 406 on the upper annular rail 401 operate, so that the mounting frame 419 and the fixed frame 424 on the upper annular rail 401 move until the mounting frame 419 and the thermal insulation soft frame belt 413 contact the welding valve body 3. Then, the universal motor 422 and the winding motor 425 on the upper annular rail 401 operate, so that the thermal insulation soft frame belt 413 is loosened, and the welded parts are covered and heated.

[0106] When the circumference is welded to the end part, the telescopic cylinder 415 operates, causing the arc-shaped sliding frame 410 to move on the arc-shaped rail seat 409, thereby driving the upper annular rail 401 and the lower annular rail 405 to move, causing the preheating soft frame belt 414 and the insulation soft frame belt 413 to deflect as a whole for a distance, so that the unwelded part of the end is exposed until the welding is completed.

[0107] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A valve body processing and welding device, characterized in that: include: A processing platform, the top of which is provided with a mounting groove, and an outer wall of one side of the processing platform is fixedly connected with a fixing bracket; A processing and fixing module is provided inside the mounting groove and is used to fix the flange and the valve body and ensure that they are on the same axis; Welding the valve body, the welding valve body is located above the processing platform, and the welding valve body includes a valve body and a flange; A stress welding module is located on a fixed bracket and is used to control the temperature of unwelded and welded parts, thereby reducing the temperature difference between the welding point and the unwelded and welded parts; A welding gun body, the welding gun body being arranged outside the welding valve body; The stress welding module includes: A lower annular rail, the lower annular rail is located outside the processing platform, an upper annular rail is provided above the lower annular rail, and the inner walls of the lower annular rail and the upper annular rail are fixedly connected with a fixed gear ring; Two connecting brackets, the two connecting brackets are respectively arranged on the lower annular rail and the upper annular rail, the two connecting brackets are fixedly connected to the electric push rods, and the output ends of the two electric push rods are fixedly connected to the mounting frame; Two guide brackets, the two guide brackets are respectively arranged on the lower annular rail and the upper annular rail, the two guide brackets are fixedly connected to the electric rod, and the output ends of the two electric rods are fixedly connected to the fixed frame; Two winding wheels are respectively arranged on two fixed frames. A preheating soft frame belt and a heat-insulating soft frame belt are respectively arranged on the two winding wheels. One end of the preheating soft frame belt and the heat-insulating soft frame belt are respectively arranged on two mounting frames.

2. A valve body processing and welding device according to claim 1, characterized in that: The stress welding module also includes: An arc-shaped rail seat is arranged on the top of the fixed bracket, an arc-shaped sliding frame is arranged on the arc-shaped rail seat, and the lower annular rail is arranged on the arc-shaped sliding frame; Two mounting uprights are respectively arranged on the arc-shaped rail seat and the arc-shaped sliding frame, and the outer walls of the two mounting uprights are provided with a same telescopic oil cylinder.

3. A valve body processing and welding device according to claim 2, characterized in that: The stress welding module also includes: Two electric lifting rods, both of which are fixedly connected to the arc-shaped sliding frame, the output ends of the two electric lifting rods are fixedly connected to the same lifting frame, and the upper annular rail is provided on the lifting frame; Two winding motors are respectively arranged on two fixed frames, and the output shafts of the two winding motors are respectively connected to the tops of the two winding wheels through couplings.

4. A valve body processing and welding device according to claim 3, characterized in that: The stress welding module also includes: Two guide wheels, the two guide wheels are respectively arranged on two fixed frames, and the outer walls of the two guide wheels are respectively in contact with the outer walls of the preheating soft frame belt and the heat-insulating soft frame belt; Two heating power supply components are respectively arranged inside the two installation frames. Two heating circuits are respectively arranged on the two heating power supply components, and the four heating circuits are respectively arranged on the preheating soft frame belt and the insulation soft frame belt.

5. The valve body processing and welding device according to claim 4, characterized in that: The stress welding module also includes: A plurality of heating rods, each of which is provided on the preheating soft frame belt and the heat-insulating soft frame belt, and each of which is connected to four heating circuits; Two universal motors are respectively arranged on two guide brackets. The output shafts of the two universal motors are connected to gear parts through couplings. The two gear parts are respectively engaged with two fixed gear rings.

6. The valve body processing and welding device according to claim 5, characterized in that: The processing and fixing module includes: A servo motor is arranged at the bottom of the mounting groove; A fixed disc seat is arranged on the inner wall of the mounting groove and is located above the servo motor. Three movable guide grooves are opened on the top of the fixed disc seat; The threaded plate is connected to the output shaft of the servo motor through a coupling. The threaded plate is located inside the fixed disc seat. Three movable guide seats are provided on the threaded plate. The outer walls of the three movable guide seats are respectively in contact with the inner walls of the three movable guide grooves.

7. A valve body processing and welding device according to claim 6, characterized in that: The processing and fixing module also includes: Three flange fixing parts, the three flange fixing parts are respectively arranged on the three movable guide seats; Three fixed supports, the three fixed supports are respectively arranged on the three movable guide seats, the three fixed supports are each provided with an adjustment guide port and a threaded hole, and the three threaded holes are respectively connected to the three adjustment guide ports; Three adjusting guide rods, the three adjusting guide rods are respectively arranged on the inner walls of the three adjusting guide ports, and one end of the three adjusting guide rods is provided with a valve body fixing piece; Three locking screws are respectively arranged inside the three threaded holes.

8. The valve body processing and welding device according to claim 7, characterized in that: The top of the arc-shaped sliding frame is fixedly connected to a welding guide rail, a welding gear ring is provided on the welding guide rail, a welding bracket is fixedly connected to the inner wall of the welding gear ring, an electric telescopic rod is fixedly connected to the welding bracket, an output end of the electric telescopic rod is fixedly connected to the welding gun bracket, a welding gun body is provided on the welding gun bracket, and a driving motor is fixedly connected to the top of the arc-shaped sliding frame, an output shaft of the driving motor is connected to a driving gear through a coupling, and the driving gear is meshed with the welding gear ring.

9. A valve body processing and welding method, using a valve body processing and welding device according to claim 8, characterized in that: The steps include: Step 1: Place the welded valve body on a processing platform, and fix the welded valve body and the flange by processing and fixing the module; Step 2: During welding, the electric telescopic rod is operated to adjust the position of the welding gun body to the welding point. At this time, the driving motor and the welding gun body are operated to perform welding. Step 3: During the welding process, the stress welding module is operated to preheat the unwelded parts and keep the welded parts warm as the welding progresses until the welding is completed.

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