Welding device for machining forced sealing ball valve

Abstract

The invention relates to the technical field of ball valve welding, and discloses a welding device for forced sealing ball valve machining, which comprises a valve core and a valve rod, a clamping mechanism is arranged on the outer side of the valve core, a transmission mechanism is arranged on one side of the clamping mechanism, and a lifting mechanism is arranged on one side of the transmission mechanism. And the transmission mechanism simultaneously drives the clamping mechanism to clamp and the lifting mechanism to lift. According to the welding device for machining the forced sealing ball valve, adjustment can be conducted by adjusting the extension length of the distance adjusting mechanism according to different sizes of circular ring parts needing to be welded, specifically, when the extension distance of the extension part of the distance adjusting mechanism extending out of the interior of the inner bin is longer, the size of the circular ring capable of being welded is larger, and the welding efficiency is improved. And when the extending distance of the extending part from the inner bin is shorter, the size of the welding circular ring is smaller, so that the welding circumference can be freely and flexibly adjusted according to the trepanning conditions on the valve cores with different sizes, and the device is more convenient and flexible to use.

Description

Technical Field

[0001] The invention relates to the technical field of ball valve welding, in particular to a welding device for processing a forced sealing ball valve. Background Art

[0002] The ball valve is composed of a valve body, a ball, a valve stem, a valve seat, a sealing device and other components. The core component is the ball, which has a circular through hole. The ball can rotate around its own axis in the valve body. The valve is opened and closed and the flow of the medium is adjusted by the rotation of the ball. When the ball valve is in the closed state, the through hole of the ball is perpendicular to the inlet and outlet channels of the valve body, and the ball blocks the channel of the valve body, thereby preventing the flow of the medium.

[0003] In the modern industrial field, ball valves, as a key fluid control component, are widely used in many industries such as petroleum, natural gas, chemical industry, electric power, water treatment, etc. Among them, forced sealing ball valves have attracted much attention and been put into use in large quantities because they can provide more reliable sealing performance under specific working conditions to ensure leakage-free transmission of the medium. With the continuous improvement of production efficiency, product quality and safety requirements in various industries, the processing and manufacturing process of forced sealing ball valves is also facing higher challenges. Welding, as an important link in the ball valve processing process, directly affects the overall performance, sealing effect and service life of the ball valve. In some ball valves, the ball and the valve stem are connected by welding. This connection method can enhance the connection strength between the ball and the valve stem, ensuring that when the ball valve is frequently operated (such as frequently adjusting the medium flow in the chemical production process), the ball can accurately rotate with the rotation of the valve stem.

[0004] The prior art publication number is CN117415500B, which provides a welding device for processing forced-sealed ball valves, including a support seat, a support frame rotatably arranged above the support seat, the support frame including an arched bracket, support arms rotatably arranged on the inner sides of both sides of the arched bracket, and the same circular ring is fixedly arranged between the two support arms, a pipe fixing assembly is arranged on the inner side of the circular ring, and symmetrically arranged clamping assemblies are slidably arranged on the two support arms, and an adjustment assembly for adjusting the spacing between the two clamping assemblies is arranged on the circular ring, the clamping assembly includes a rectangular sleeve slidably arranged on the support arm, a square tube is fixed on the side of the rectangular sleeve away from the support arm, a movable block is slidably arranged in the square tube, and a conical block is fixedly arranged on the end of the movable block away from the rectangular sleeve, so that the angle of the ball valve component to be welded can be adjusted, which is convenient for welding and meets different welding needs. It can be suitable for ball valves with different inner diameters and is convenient for welding.

[0005] Although the above-mentioned prior art uses a clamping assembly to clamp ball valve cores of different sizes, it does not have the function of adjusting the welding distance. The existing ball valve welding generally includes welding at two parts, one is the welding with the external pipe, and the other is the welding of the internal valve core and the valve stem. During the welding process of the valve core and the valve stem, since the connecting part is circular as a whole, the welding head needs to move in a circle for welding. In this process, the circumferential distance is generally fixed. If adjustment is required, the welding head will be replaced, which is troublesome to operate. In addition, the existing equipment clamps the valve core and the valve stem at the same time for welding. When clamping the valve core, the valve stem that matches its size cannot be synchronously lowered to the circular hole of the valve core during the valve core clamping operation.

[0006] It can be seen that a welding device for processing forced-sealed ball valves is needed to solve the problems mentioned in the above background technology that the size of the welding circle cannot be adjusted according to the diameter of the valve core opening when welding the valve core and the valve stem, and that the clamping of the valve core and the adjustment of the valve stem lowering position cannot be linked, resulting in troublesome early adjustment operations. Summary of the invention

[0007] The purpose of the present invention is to provide a welding device for processing forced sealing ball valves, so as to solve the problems proposed in the above background technology that the size of the welding circle cannot be adjusted according to the diameter of the valve core opening when welding the valve core and the valve stem, and there is no linkage between clamping the valve core and adjusting the lowering position of the valve stem, which makes the early adjustment operation troublesome.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a welding device for processing a forced sealing ball valve, comprising a valve core and a valve stem, a clamping mechanism is arranged on the outer side of the valve core, and a transmission mechanism is arranged on one side of the clamping mechanism, a lifting mechanism is arranged on one side of the transmission mechanism, and the transmission mechanism drives the clamping mechanism to clamp and the lifting mechanism to lift at the same time, an adjusting mechanism is connected to one side of the top of the lifting mechanism, and a rotating mechanism driving the distance adjusting mechanism to rotate is installed below the adjusting mechanism, and the distance adjusting mechanism is used to adjust the distance between the welding head and the welding ring; The distance adjustment mechanism includes a mounting shell and an inner bin, and a first pressing rod and a second pressing rod are respectively arranged on both sides of the inner bin, and the bottom ends of the first pressing rod and the second pressing rod are both connected to a first spring, a hinge claw is hinged on one side of the middle position of the first pressing rod and the second pressing rod, and a spring sheet is arranged on one side of the hinge claw, a flower-shaped gear is arranged between the two groups of the hinge claws, and a flat gear is connected to the top of the flower-shaped gear, a lifting rod is arranged on the outer side of the flat gear, and a rack portion is arranged on one side of the lifting rod, and an extension portion is connected to the bottom end of the lifting rod; The transmission mechanism includes a first worm and a second worm, and one end of the first worm and the second worm is connected by a pulley, the first worm is connected to the clamping mechanism, the second worm is engaged with a transmission worm wheel at the top, and the transmission worm wheel is connected to a transmission gear through a shaft, and the transmission gear is engaged with an upper sleeve rod arranged inside the lower sleeve rod to drive the upper sleeve rod to rise and fall.

[0009] Preferably, the clamping mechanism includes an outer ring and an inner ring, and the inner ring of the inner ring is provided with several groups of internal teeth equidistantly arranged, one side of the internal teeth is meshed with a pinion, and a stop block is meshed above one side of the pinion, and the outer side of the inner ring is connected to the external teeth.

[0010] Preferably, there are multiple groups of pinions, which are evenly spaced inside the inner ring and mesh with the internal teeth; there are multiple groups of stops, which are evenly spaced above the outer ring, and a slide groove is provided at the top of the outer ring, a slider matching the slide groove is provided at the bottom of the stop block, an arc-shaped through groove is provided on the outer side of the outer ring, and the outer teeth move inside the through groove.

[0011] Preferably, the outer teeth are meshed with the first worm, and the first worm is located on one side of the outer teeth, and the transmission mechanism further includes a drive motor, and the drive motor is located at one end of the pulley.

[0012] Preferably, the lifting mechanism includes a lower sleeve rod and an upper sleeve rod, and a plurality of groups of tooth grooves are equidistantly arranged on one side of the upper sleeve rod, an engaging groove is opened inside the lower sleeve rod, the transmission gear enters the engaging groove and engages with the tooth groove, the top end of the upper sleeve rod is connected to a top plate, and an adjustment mechanism is connected through the top plate.

[0013] Preferably, the adjustment mechanism includes an outer shell, and an upper worm gear is provided at the top of the outer shell, a driving worm is meshed on one side of the upper worm gear, and a screw rod passes through the interior of the upper worm gear, a threaded hole matching the screw rod is provided inside the upper worm gear, and a vertical groove is provided on the outside of the screw rod, a positioning pin is installed inside the outer shell, and the positioning pin is located in the vertical groove, and a rotating mechanism is installed below the screw rod.

[0014] Preferably, the rotating mechanism includes a rotating motor and a rotating rod, and the rotating rod is located at the output end of the rotating motor, the distance adjusting mechanism is located on the outside of the rotating rod, and the bottom end of the rotating rod is connected to a positioning rod through a bearing, and a clamp is installed at the bottom end of the positioning rod, and the clamp is connected to the valve stem.

[0015] Preferably, the rotating rod is connected to the mounting shell, and the inner warehouse is located inside the mounting shell, two groups of through holes are opened at the front end of the inner warehouse, and a group of through holes is opened at the rear end of the mounting shell, one end of the first pressing rod and the second pressing rod are connected to a pressing head, and the pressing head passes through the through holes at the front end of the inner warehouse and extends to the outside thereof, the number of the spring sheets is two groups, one side of the two groups of spring sheets are both installed in contact with the inner wall of the inner warehouse, and the other side is in contact with one side of the hinge claw.

[0016] Preferably, the first spring is arranged inside the inner warehouse, the flower-shaped gear is installed inside the inner warehouse through an axis below, a clamping block is provided at the bottom end of the flower-shaped gear, and the bottom end of the clamping block is connected to a second spring, and the second spring is installed inside the inner warehouse.

[0017] Preferably, the cross section of the lifting rod is a rectangular frame structure with one side not sealed, the rack portion is located on the inner side of one side of the rectangular frame, the rack portion is meshed with the flat gear, and the welding head is arranged inside the extension portion.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are: First, the present invention realizes that the parts of circular rings that need to be welded of different sizes can be adjusted by adjusting the extension length of the distance adjusting mechanism through the valve core, valve stem, rotating mechanism and distance adjusting mechanism. Specifically, the longer the extension part of the distance adjusting mechanism extends from the inside of the inner warehouse, the larger the size of the circular ring that can be welded will be, and the shorter the distance the extension part extends from the inner warehouse, the smaller the size of the welded circular ring will be. In this way, the welding circumference can be freely and flexibly adjusted according to the opening conditions on the valve cores of different sizes, which makes the use of the device more convenient and flexible. Moreover, the operation method of adjusting the extension is to press the corresponding pressing head. In this way, the difficulty of the adjustment operation is reduced, thereby improving the user experience of the device.

[0019] Second, the present invention realizes that under a specific use environment in which the valve core size and valve stem length are specified by setting up a clamping mechanism, a transmission mechanism and a lifting mechanism, only the transmission mechanism needs to be started, so that the valve core can be clamped by the clamping mechanism at the same time, and the valve stem, which is also in a clamped state, can be lowered and moved to the punching position of the valve core. In this way, the action of starting the transmission mechanism can simultaneously drive the above two mechanisms to carry out corresponding movements, which enhances the linkage of the device and reduces the preparation operations required before welding, thereby making the use of the device more convenient.

[0020] Third, the present invention, through the setting of the adjustment mechanism, realizes that the lifting height of the screw can be adjusted by simply shaking the driving worm, so that corresponding adjustments can be conveniently made according to valve stems of different lengths, so that it can cooperate with the clamping mechanism responsible for clamping to synchronously move the valve stem to a position suitable for welding. Moreover, by shaking the driving worm to drive the upper worm wheel to rotate, it can also prevent reversal. The operator can achieve positioning by letting go of the device, which effectively improves the user experience and flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the connection of the clamping mechanism of the present invention; Figure 4 This is a schematic diagram of the disassembly of the clamping mechanism of the present invention; Figure 5 It is a schematic diagram of the connection structure of the transmission mechanism, the lifting mechanism, the adjustment mechanism and the distance adjustment mechanism of the present invention; Figure 6 It is a schematic diagram of the connection between the transmission mechanism and the lifting mechanism of the present invention; Figure 7 It is a schematic diagram of the disassembly of the transmission mechanism and the lifting mechanism of the present invention; Figure 8 This is a schematic diagram of the disassembly of the regulating mechanism of the present invention; Fig. 9 This is a schematic diagram of the connection between the distance adjustment mechanism, the rotation mechanism and the welding head of the present invention; Fig.10 This is a schematic diagram of the disassembly of the distance adjustment mechanism of the present invention; Fig.11 This is a schematic diagram of the internal structure of the distance adjustment mechanism of the present invention; Fig.12 The diagram is a structural diagram of the distance adjustment mechanism of the present invention without the lifting rod.

[0022] Among them: 1. valve core; 2. valve stem; 3. clamping mechanism; 301. outer ring; 302. inner ring; 303. inner teeth; 304. pinion; 305. block; 306. outer teeth; 4. transmission mechanism; 401. drive motor; 402. pulley; 403. first worm; 404. second worm; 405. transmission worm wheel; 406. transmission gear; 5. lifting mechanism; 501. lower sleeve rod; 502. upper sleeve rod; 503. tooth groove; 504. top plate; 6. adjustment mechanism; 601. housing; 602. upper worm wheel; 603 , driving worm; 604, screw; 605, vertical slot; 606, positioning pin; 7, rotating mechanism; 701, rotating motor; 702, rotating rod; 8, pitch adjustment mechanism; 801, mounting shell; 802, inner bin; 803, first pressing rod; 804, second pressing rod; 805, pressing head; 806, hinge claw; 807, spring sheet; 808, first spring; 809, flower-shaped gear; 810, flat gear; 811, block; 812, second spring; 813, lifting rod; 814, rack portion; 815, extension portion; 9, welding head. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 7 A welding device for processing a forced-sealed ball valve comprises a valve core 1 and a valve stem 2, a clamping mechanism 3 is arranged on the outer side of the valve core 1, and a transmission mechanism 4 is arranged on one side of the clamping mechanism 3, a lifting mechanism 5 is arranged on one side of the transmission mechanism 4, and the transmission mechanism 4 simultaneously drives the clamping mechanism 3 to clamp and the lifting mechanism 5 to lift, the transmission mechanism 4 comprises a first worm 403 and a second worm 404, and one end of the first worm 403 and the second worm 404 is connected by a pulley 402, the first worm 403 is connected to the clamping mechanism 3, a transmission worm wheel 405 is meshed with the second worm 404 above, and the transmission worm wheel 405 is connected to a transmission gear 406 through a shaft, and the transmission gear 406 is meshed with an upper sleeve rod 502 arranged inside a lower sleeve rod 501, driving the upper sleeve rod 502 to lift.

[0025] In the present embodiment, the valve core of the ball valve is generally a hollow cylindrical structure, or a spherical structure with a hole in the middle. Both types have an outer wall of an arc structure, so the clamp used will also directly contact the outer wall of the arc structure. In the present embodiment, multiple groups of stops 305 move inward together, and the ends of the stops 305 are used to contact the outer wall of the ball valve to clamp it. Therefore, the ends of the stops 305 can adopt a structure and material that conforms to the arc surface, such as rubber. Multiple groups of equidistant stops 305 will not only face the outer wall of the arc, but some stops 305 may not be able to contact it. Because the ball valve has a hole in the middle, the stops 305 that are not in contact with the outer wall will not affect the clamping. The clamping structure in the present embodiment can clamp well regardless of whether it is a spherical valve core or a hollow cylindrical valve core.

[0026] Specifically, the clamping mechanism 3 includes an outer ring 301 and an inner ring 302, and the inner ring of the inner ring 302 is equidistantly provided with a plurality of groups of inner teeth 303, one side of the inner teeth 303 is meshed with a pinion 304, and a stop block 305 is meshed above one side of the pinion 304, and the outer side of the inner ring 302 is partially connected to the outer teeth 306.

[0027] In this embodiment, a supporting structure can be set inside and at the bottom of the clamping mechanism 3. For the sake of ease of understanding, it is not fully drawn in the accompanying drawings, but it affects the operation of the clamping mechanism 3. A support rod is added at the bottom end of the outer ring 301, so that the clamping mechanism 3 can clamp the center position of the ball valve. The support rod provides supporting force for the clamping mechanism 3 so that it can be installed at a suitable height. A protrusion is provided at the lower part of the inner side of the inner ring 302, and the protrusion is connected to the support rod. The protrusion facilitates the installation of the pinion 304. A shaft is connected between the pinion 304 and the protrusion. A matching slide groove and slider are provided between the outer ring 301 and the inner ring 302. The slide groove and the slider limit the inner ring 302 when the outer ring 301 rotates.

[0028] Specifically, there are multiple groups of small gears 304, which are evenly distributed inside the inner ring 302 and mesh with the inner teeth 303. There are multiple groups of stops 305, which are evenly distributed above the outer ring 301. A sliding groove is provided at the top of the outer ring 301, and a slider matching the sliding groove is provided at the bottom of the stops 305. An arc-shaped through groove is provided on the outer side of the outer ring 301, and the outer teeth 306 move inside the through groove.

[0029] In this embodiment, the outer teeth 306 mesh with the first worm 403 to drive the inner ring 302 to rotate, and the grooves provided in the outer ring 301 meet the rotation of the inner ring 302. The outer part of the inner ring 302 is teeth, and the other part is a smooth arc surface structure. The transmission of the outer teeth 306 and the first worm 403 is the transmission of the worm and worm wheel, which can also prevent reversal, so that the clamping mechanism 3 will not be actively loosened after clamping and locking.

[0030] Specifically, the outer teeth 306 mesh with the first worm 403 , and the first worm 403 is located at one side of the outer teeth 306 . The transmission mechanism 4 further includes a drive motor 401 , and the drive motor 401 is located at one end of the pulley 402 .

[0031] In this embodiment, the driving motor 401 is a forward and reverse motor. After starting, it drives one group of pulleys in the pulley 402 to rotate. The pulleys are driven by belts to drive another group of pulleys to rotate. The two groups of pulleys will each drive a group of worm gears to rotate, thereby realizing synchronous transmission of the two groups of worm gears. A controller is installed in the device, and the controller can control the electronic components in the device, so that the device is easy to control, such as controlling the driving motor 401 to turn on.

[0032] Specifically, the lifting mechanism 5 includes a lower sleeve rod 501 and an upper sleeve rod 502, and a plurality of groups of latching grooves 503 are equidistantly arranged on one side of the upper sleeve rod 502. An engaging groove is provided inside the lower sleeve rod 501, and the transmission gear 406 enters the engaging groove and engages with the latching groove 503. The top end of the upper sleeve rod 502 is connected to a top plate 504, and an adjustment mechanism 6 is connected to the inside of the top plate 504.

[0033] In this embodiment, after the transmission worm gear 405 rotates, it will drive the transmission gear 406 to rotate. A part of the transmission gear 406 enters the interior of the lower sleeve rod 501. When rotating, the teeth on the outer side of the transmission gear 406 will be stuck in the tooth groove 503, thereby driving the upper sleeve rod 502 to rise and fall inside the lower sleeve rod 501. Matching limit grooves and limit blocks can be set between the lower sleeve rod 501 and the upper sleeve rod 502 to assist the movement of the upper sleeve rod 502. The lower sleeve rod 501 is fixed on a plane, and the bottom of the drive motor 401 is connected to the lower sleeve rod 501 through a mounting plate.

[0034] See also Figure 8 , a welding device for processing a forced sealing ball valve, wherein one side of the top of a lifting mechanism 5 is connected to an adjusting mechanism 6.

[0035] In this embodiment, the adjustment mechanism 6 is provided to make the device more flexible. When the valve core and the valve stem are matched for the first time, it is necessary to adjust the adjustment mechanism 6 so that the distance between the valve stem and the ball valve is proportional to the clamping distance. Thereafter, when the valve core and valve stem of the same model are used, no adjustment is required. The purpose of the lifting and lowering of the adjustment screw 604 is not to directly make the valve stem 2 contact with the punching point of the valve core 1, but to adjust the proportional relationship so that when the drive motor 401 is started, the valve stem 2 can reach the punching position synchronously and the clamping mechanism 3 can successfully clamp the valve core 1.

[0036] Specifically, the adjustment mechanism 6 includes a shell 601, and an upper worm gear 602 is arranged at the top of the shell 601, a driving worm 603 is meshed on one side of the upper worm gear 602, and a screw 604 passes through the interior of the upper worm gear 602, a threaded hole matching the screw 604 is arranged inside the upper worm gear 602, and a vertical groove 605 is arranged on the outer side of the screw 604, a positioning pin 606 is installed inside the shell 601, and the positioning pin 606 is located in the vertical groove 605, and a rotating mechanism 7 is installed below the screw 604.

[0037] In this embodiment, when the driving worm 603 is rotated, the driving worm 603 will drive the upper worm wheel 602 meshing with it to rotate. The upper worm wheel 602 is provided with a threaded hole matching the top plate 504 inside, and is limited by a positioning pin 606, so that when the upper worm wheel 602 rotates, the screw 604 will rise and fall. The screw 604 penetrates the upper worm wheel 602 and the outer shell 601 and extends to the outside thereof. A rotating motor 701 is installed at the bottom end of the screw 604, so the rotating motor 701 will rise and fall with the rise and fall of the screw 604. Therefore, a mobile power supply for powering the rotating motor 701 can be installed on the top of the rotating motor 701, so that it is convenient to power the rotating motor 701 while it is displaced, and the valve stem 2 clamped under the rotating rod 702 will also rise and fall with the rise and fall of the screw 604.

[0038] See also Figure 9-12, a welding device for processing a forced-sealed ball valve, a rotating mechanism 7 for driving a distance-adjusting mechanism 8 to rotate is installed below an adjusting mechanism 6, the distance-adjusting mechanism 8 is used to adjust the distance between a welding head 9 and a welding ring, the distance-adjusting mechanism 8 comprises a mounting shell 801 and an inner bin 802, and a first pressing rod 803 and a second pressing rod 804 are respectively arranged on both sides inside the inner bin 802, and the bottom ends of the first pressing rod 803 and the second pressing rod 804 are both connected with a first spring 808, a hinge claw 806 is hinged on one side of the middle position of the first pressing rod 803 and the second pressing rod 804, and a spring sheet 807 is arranged on one side of the hinge claw 806, a flower-shaped gear 809 is arranged between the two sets of hinge claws 806, and a flat gear 810 is connected to the top of the flower-shaped gear 809, a lifting rod 813 is arranged on the outer side of the flat gear 810, and a rack portion 814 is arranged on one side inside the lifting rod 813, and an extension portion 815 is connected to the bottom end of the lifting rod 813.

[0039] In this embodiment, the mounting shell 801 is a rectangular structure with no seal on one side and an arc-shaped seal on the other side, which is hollow inside and has no seal on the top. The inner chamber 802 is installed inside it. Since there is no seal on the top of the mounting shell 801, it is convenient to operate when the user needs to press the first pressing rod 803 or the second pressing rod 804. Pressing the first pressing rod 803 or the second pressing rod 804 once can control the extension part 815 to extend or retract once, which is convenient for adjustment. A welding device is installed on the top of the welding head 9, and the valve stem and the valve core are welded through the welding head 9. The welding head 9 can be installed on the extension part 815 by snapping.

[0040] Specifically, the rotating mechanism 7 includes a rotating motor 701 and a rotating rod 702, and the rotating rod 702 is located at the output end of the rotating motor 701, the distance adjustment mechanism 8 is located on the outside of the rotating rod 702, and the bottom end of the rotating rod 702 is connected to a positioning rod through a bearing, and a clamp is installed at the bottom end of the positioning rod, and the clamp is connected to the valve stem 2.

[0041] In this embodiment, when the rotating motor 701 drives the rotating rod 702 to rotate, the lower clamping jaw and valve stem 2 will not rotate. The rotating motor 701 will only drive the distance adjustment mechanism 8 to rotate, so that the end of the welding head 9 is circularly rotated for welding.

[0042] Specifically, the rotating rod 702 is connected to the mounting shell 801, and the inner bin 802 is located inside the mounting shell 801, two groups of through holes are opened at the front end of the inner bin 802, and a group of through holes is opened at the rear end of the mounting shell 801, one end of the first pressing rod 803 and the second pressing rod 804 are both connected to a pressing head 805, and the pressing head 805 passes through the through holes at the front end of the inner bin 802 and extends to the outside thereof, there are two groups of spring sheets 807, one side of the two groups of spring sheets 807 are both installed in contact with the inner wall of the inner bin 802, and the other side is in contact with one side of the hinge claw 806.

[0043] In this embodiment, when a cluster of first pressing rods 803 are pressed, the first pressing rods 803 will drive the hinge claw 806 to move downward once, so that the flower-shaped gear 809 is toggled once by the hinge claw 806. The flower-shaped gear 809 rotates the distance of one leaf, and the block 811 below the flower-shaped gear 809 enters between the two leaves to position it. Only when the flower-shaped gear 809 is toggled by the hinge claw 806, the block 811 will move downward under the action of the second spring 812 to rotate. The blades of the flower-shaped gear 809 make room, and when one shift is completed, the block 811 will continue to enter between the two groups of blades of the corresponding flower-shaped gear 809 to position it. Each rotation of the flower-shaped gear 809 will drive the flat gear 810 to rotate once, and the flat gear 810 will drive the rack part 814 to descend once, which will drive the extension part 815 to extend outward for a certain distance. Since the bottom end of the first pressing rod 803 is connected to a spring, the first pressing rod 803 will return to its original position when the pressure is released.

[0044] Specifically, the first spring 808 is arranged inside the inner warehouse 802, and the flower-shaped gear 809 is installed inside the inner warehouse 802 through an axis below. A clamping block 811 is provided at the bottom end of the flower-shaped gear 809, and the bottom end of the clamping block 811 is connected to the second spring 812, and the second spring 812 is installed inside the inner warehouse 802.

[0045] In this embodiment, the same applies to pressing the second pressing rod 804. The second pressing rod 804 drives the articulated claw 806 to move, thereby driving the flower-shaped gear 809 to rotate in the opposite direction once, which will drive the rack portion 814 to move in the opposite direction once, so that the rack portion 814 drives the extension portion 815 to retract a certain distance. In this process, the spring sheet 807 serves to restore the initial position of the articulated claw 806. A limiting groove is provided inside the inner bin 802, and a corresponding limiting block is provided on the outer side of the lifting rod 813. Therefore, when the lifting rod 813 moves as a whole, the limiting structure provided inside the inner bin 802 can assist the movement of the lifting rod 813.

[0046] Specifically, the cross section of the lifting rod 813 is a rectangular frame structure with one side not sealed, the rack portion 814 is located on the inner side of one side of the rectangular frame, the rack portion 814 is meshed with the flat gear 810, and the welding head 9 is arranged inside the extension portion 815.

[0047] In this embodiment, the welding head 9 adopts an inclined structure. In fact, the welding head 9 can also adopt a horizontal structure without affecting the welding process.

[0048] When in use, it is necessary to connect an external power supply, which provides electrical energy for the device so that the device can operate normally. First, if it is batch welding, the distance between the punching position of the valve stem 2 and the valve core 1 and the position of the valve core 1 clamped by the clamping mechanism 3 have a certain proportional relationship, then there is no need to adjust the adjustment mechanism 6, and the transmission mechanism 4 is directly started to make the drive motor 401 drive the pulley 402 to rotate, and the pulley 402 drives the first worm 403 and the second worm 404 to rotate. The first worm 403 can drive the inner ring 302 to rotate through the meshing relationship with the outer teeth 306, and the inner ring 302 rotates inside the outer ring 301. When the inner ring 302 rotates, the inner teeth 303 on the inside will drive the inner ring 302 to rotate with it. The meshing pinion 304 rotates, and the pinion 304 drives the meshing block 305 to move, so that the multiple groups of blocks 305 move inwards, and one end of the block 305 is used to resist the outer wall of the valve core 1, so that the valve core 1 is clamped. When the second worm 404 rotates, it drives the transmission worm wheel 405 to rotate, and the transmission worm wheel 405 drives the transmission gear 406 to rotate through a common shaft. The transmission gear 406 partially enters the lower sleeve rod 501 to drive the upper sleeve rod 502 meshed with it to rise and fall, so as to adjust the position of the clamped valve stem 2, so that it is just moved to the punching position on the valve core 1, and the circumference size of the welding between the valve core 1 and the valve stem 2 can be adjusted by the distance adjustment mechanism 8; The pressing head 805 at the top of the first pressing rod 803 is pressed, so that the first pressing rod 803 drives the hinge claw 806 to move downward synchronously. Under the action of the first spring 808, it will rebound once when pressed once. During the movement of the hinge claw 806, the flower-shaped gear 809 on one side will be moved to rotate. The block 811 and the second spring 812 under the flower-shaped gear 809 will limit the flower-shaped gear 809 after rotation. When the flower-shaped gear 809 rotates, it will drive the flat gear 810 above to rotate. The rotation of the flat gear 810 will drive the rack part 814 meshing with it to descend, thereby slowly lifting the lifting rod 813 as a whole Move out of the inner warehouse 802, the welding head 9 installed on one side of the extension part 815 becomes farther away from the welding arc, so when the rotating mechanism 7 is started, the welding circle of the welding head 9 around the valve core 1 and the valve stem 2 will become larger, so as to adjust the welding of different apertures. When the distance needs to be shortened, the pressing head 805 at one end of the second pressing rod 804 can be pressed to slowly retract the lifting rod 813, thereby reducing the diameter of the welding circle. After the adjustment is completed, the rotating mechanism 7 can be started, so that the rotating mechanism 7 drives the distance adjustment mechanism 8 and the welding head 9 to rotate as a whole, and one end of the welding head 9 welds the contact point between the valve core 1 and the valve stem 2.

[0049] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A welding device for processing a forced sealing ball valve, comprising a valve core (1) and a valve stem (2), characterized in that: A clamping mechanism (3) is arranged on the outside of the valve core (1), and a transmission mechanism (4) is arranged on one side of the clamping mechanism (3), and a lifting mechanism (5) is arranged on one side of the transmission mechanism (4), and the transmission mechanism (4) simultaneously drives the clamping mechanism (3) to clamp and the lifting mechanism (5) to lift, and an adjusting mechanism (6) is connected to one side of the top of the lifting mechanism (5), and a rotating mechanism (7) for driving a distance adjustment mechanism (8) to rotate is installed below the adjusting mechanism (6), and the distance adjustment mechanism (8) is used to adjust the distance between the welding head (9) and the welding ring; The distance adjustment mechanism (8) comprises a mounting shell (801) and an inner bin (802), and a first pressing rod (803) and a second pressing rod (804) are respectively arranged on both sides inside the inner bin (802), and the bottom ends of the first pressing rod (803) and the second pressing rod (804) are both connected to a first spring (808), a hinge claw (806) is hinged on one side of the middle position of the first pressing rod (803) and the second pressing rod (804), and a spring sheet (807) is arranged on one side of the hinge claw (806), a flower-shaped gear (809) is arranged between the two groups of the hinge claws (806), and the top end of the flower-shaped gear (809) is connected to a flat gear (810), a lifting rod (813) is arranged on the outer side of the flat gear (810), and a rack portion (814) is arranged on one side inside the lifting rod (813), and an extension portion (815) is connected to the bottom end of the lifting rod (813); The transmission mechanism (4) comprises a first worm (403) and a second worm (404), and one end of the first worm (403) and the second worm (404) are connected via a pulley (402), the first worm (403) is connected to the clamping mechanism (3), the second worm (404) is meshed with a transmission worm wheel (405) at the top, and the transmission worm wheel (405) is connected to a transmission gear (406) via a shaft, and the transmission gear (406) is meshed with an upper sleeve rod (502) arranged inside the lower sleeve rod (501), thereby driving the upper sleeve rod (502) to rise and fall.

2. A welding device for processing a forced sealing ball valve according to claim 1, characterized in that: The clamping mechanism (3) comprises an outer ring (301) and an inner ring (302), wherein the inner ring (302) is provided with a plurality of groups of inner teeth (303) at equal intervals on its inner ring, a pinion (304) is meshed on one side of the inner teeth (303), and a stop block (305) is meshed above one side of the pinion (304), and the outer side of the inner ring (302) is connected to the outer teeth (306).

3. A welding device for processing a forced sealing ball valve according to claim 2, characterized in that: There are multiple groups of pinions (304), which are evenly spaced inside the inner ring (302) and mesh with the inner teeth (303). There are multiple groups of retaining blocks (305), which are evenly spaced above the outer ring (301), and a slide groove is provided at the top of the outer ring (301), and a slider matching the slide groove is provided at the bottom of the retaining block (305). An arc-shaped through groove is provided on the outer side of the outer ring (301), and the outer teeth (306) move inside the through groove.

4. A welding device for processing a forced sealing ball valve according to claim 3, characterized in that: The outer teeth (306) are meshed with the first worm (403), and the first worm (403) is located on one side of the outer teeth (306). The transmission mechanism (4) further comprises a drive motor (401), and the drive motor (401) is located at one end of the pulley (402).

5. The welding device for processing a forced-seal ball valve according to claim 1, characterized in that: The lifting mechanism (5) comprises a lower sleeve rod (501) and an upper sleeve rod (502), and a plurality of groups of latching grooves (503) are equidistantly arranged on one side of the upper sleeve rod (502). An engaging groove is provided inside the lower sleeve rod (501), and the transmission gear (406) enters the engaging groove and engages with the latching groove (503). The top end of the upper sleeve rod (502) is connected to a top plate (504), and an adjusting mechanism (6) is connected to the inside of the top plate (504).

6. A welding device for processing a forced-seal ball valve according to claim 1, characterized in that: The adjusting mechanism (6) comprises a housing (601), and an upper worm wheel (602) is arranged at the top of the housing (601), a driving worm (603) is meshed on one side of the upper worm wheel (602), and a screw (604) passes through the interior of the upper worm wheel (602), a threaded hole matching the screw (604) is arranged inside the upper worm wheel (602), and a vertical groove (605) is arranged on the outer side of the screw (604), a positioning pin (606) is installed inside the housing (601), and the positioning pin (606) is located in the vertical groove (605), and a rotating mechanism (7) is installed below the screw (604).

7. The welding device for processing a forced-seal ball valve according to claim 1, characterized in that: The rotating mechanism (7) comprises a rotating motor (701) and a rotating rod (702), wherein the rotating rod (702) is located at the output end of the rotating motor (701), the distance adjustment mechanism (8) is located outside the rotating rod (702), and the bottom end of the rotating rod (702) is connected to a positioning rod via a bearing, and a clamping claw is installed at the bottom end of the positioning rod, and the clamping claw is connected to the valve stem (2).

8. A welding device for processing a forced-seal ball valve according to claim 7, characterized in that: The rotating rod (702) is connected to the mounting shell (801), and the inner bin (802) is located inside the mounting shell (801). Two groups of through holes are opened at the front end of the inner bin (802), and a group of through holes is opened at the rear end of the mounting shell (801). One end of each of the first pressing rod (803) and the second pressing rod (804) is connected to a pressing head (805), and the pressing head (805) passes through the through hole at the front end of the inner bin (802) and extends to the outside thereof. The number of the spring sheets (807) is two groups, and one side of the two groups of spring sheets (807) is both installed in contact with the inner wall of the inner bin (802), and the other side is in contact with one side of the hinge claw (806).

9. The welding device for processing a forced-seal ball valve according to claim 1, characterized in that: The first spring (808) is arranged inside the inner bin (802); the flower-shaped gear (809) is installed inside the inner bin (802) via a shaft below; a clamping block (811) is provided at the bottom end of the flower-shaped gear (809); and the bottom end of the clamping block (811) is connected to a second spring (812); and the second spring (812) is installed inside the inner bin (802).

10. The welding device for processing a forced-seal ball valve according to claim 1, characterized in that: The cross section of the lifting rod (813) is a rectangular frame structure with one side not sealed, the rack portion (814) is located on the inner side of one side of the rectangular frame, the rack portion (814) is meshed with the flat gear (810), and the welding head (9) is arranged inside the extension portion (815).

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