A tooling device for welding a series of modular combination cross valves

Abstract

The present application relates to the technical field of positioning equipment for welding four-way valves, in particular to a tool device for welding a series of modular combined four-way valves, comprising an adjustable threaded shaft arranged in a water tank, a base arranged at the bottom of the water tank, and a screwing part arranged at the top of the vertically arranged adjustable threaded shaft. The adjustable threaded shaft is suitable for supporting the compact model after cost reduction and efficiency improvement. The screwing part drives the adjustable threaded shaft to be screwed synchronously with the base screw hole. A rotating frame is arranged at the upper part of the adjustable threaded shaft, and a bearing is arranged between the rotating frame and the adjustable threaded shaft to realize 360-degree rotation in forward and reverse directions. A clamping groove lifting part is arranged below the bearing, and the bearing and the clamping groove lifting part can move separately or integrally synchronously. A system support is arranged between the water tank and a supporting outer ring, and a nitrogen gas supply assembly and a circulating water supply assembly are supported on the system support. Through structural innovation, man-machine engineering optimization and system integration, the welding of a series of four-way valves is realized, the labor input is reduced, the welding is efficient and intelligent, and the welding quality is improved.

Description

Technical Field

[0001] This invention relates to the technical field of positioning equipment for welding four-way valves, specifically a tooling device for welding a series of modular combined four-way valves. Background Technology

[0002] In refrigeration equipment manufacturing, four-way valves are critical components. Currently, the welding and assembly of four-way valves mostly rely on manual welding or simple tooling. Different models of four-way valves require customized tooling due to differences in pipe diameter and interface angles, resulting in high costs and long replacement cycles. Single-station tooling requires multiple clamping operations, making it unsuitable for assembly line operations and leading to low production efficiency. Manual welding suffers from low welding precision and poor consistency, resulting in unstable product quality and a high scrap rate. Simple tooling struggles to achieve precise positioning and reliable fixation of the complex piping and joints of four-way valves, easily leading to defects such as misalignment, incomplete welds, missing welds, angle deviations, and reversed pipe insertion during welding. While adjustable tooling exists in existing technologies, it often relies on a single adjustment mechanism, making it difficult to simultaneously meet the demands of multi-dimensional (axial, radial, angular) precise positioning and rapid switching. This ultimately fails to meet the needs of large-scale industrial production. Summary of the Invention

[0003] In view of the shortcomings of the prior art and to solve the problems mentioned in the background art, the technical problem to be solved by the present invention is to provide a tooling device for welding a series of modular combination four-way valves that can simultaneously perform welding operations on various welding parts of a four-way valve assembly, cool the four-way valve through a circulating water system, and provide multi-position adjustment to meet the needs of various models.

[0004] The technical problem to be solved by this invention is achieved through the following technical solution: a tooling device for welding a series of modular combined four-way valves, used to support the four-way valves, including a water tank, an adjustable threaded shaft inside the water tank, and a base set at the bottom of the water tank. The base provides stable support for welding the four-way valves. The vertically arranged adjustable threaded shaft passes through the base, and a screwing component is provided at the top of the adjustable threaded shaft. Rotating the screwing component realizes the up and down adjustment of the adjustable threaded shaft. The adjustable threaded shaft is adapted to support compact models after cost reduction and efficiency improvement, such as the dual-fan turbine model, where the exhaust pipe assembly is designed to be very long, and the space available for the pipeline assembly in the housing assembly becomes smaller. Various series of four-way valves are assembled and welded on this tooling. The adjustable threaded shaft can be raised and lowered when welding at different heights, reducing the problem of back injury caused by prolonged standing.

[0005] The screwing component drives the adjustable threaded shaft to be screwed synchronously with the screw hole of the base. The upper part of the adjustable threaded shaft is equipped with a rotating frame, and a bearing is provided between the rotating frame and the adjustable threaded shaft, which can achieve 360-degree rotation in both directions. A slot lifting component is provided below the bearing, and the bearing and the slot lifting component can be separated or move synchronously as a whole.

[0006] The rotating frame includes an inner mounting ring and a supporting outer ring. A brake assembly is provided on the top surface of the inner mounting ring. The brake assembly enables the rotating frame to decelerate and stop in time, stopping the rotating frame at the designated position. The supporting outer ring is provided with several valve body positioning parts evenly distributed around the circumference to support the D-port pipes of different models of four-way valves. The valve body positioning parts can support four-way valves of various models, satisfying the tooling fixation and welding of four-way valves with different pipe diameters.

[0007] The wall thickness of the outer ring supporting it is matched with the installation gap formed between the E port, S port and C port of the four-way valve, respectively. The installation gap of the four-way valve is fixed on the ring wall of the outer ring supporting it.

[0008] A system bracket is provided between the water tank and the supporting outer ring. The system bracket supports a nitrogen supply assembly for purging impurities from inside the four-way valve, and also a circulating water supply assembly for cooling the valve body. The system bracket supports both the nitrogen supply assembly and the circulating water supply assembly simultaneously, reducing the frequency of tooling adjustments. The nitrogen supply assembly can be adjusted in height along the system bracket to accommodate welders of different heights. The circulating water supply assembly can be adjusted vertically, horizontally, and vertically, and can rotate 360 ​​degrees to provide circulating water cooling for the valve body at different angles during welding.

[0009] Compared to the immersion welding used in the industry, the circulating water supply component is more conducive to maintaining water temperature. The welded valve body is submerged in water, which will be heated to a very high temperature. However, the circulating water can ensure that the water temperature is not heated too high and is maintained at around 20-30 degrees Celsius, which can better protect the valve body.

[0010] As a further embodiment of the present invention, the valve body positioning component includes several positioning frames disposed on the outer wall of the water tank for positioning the valve body. The positioning frame includes a positioning base plate and positioning side plates on both sides. The positioning base plate is provided with positioning holes, and positioning pins are inserted into the positioning holes. The lower part of the positioning base plate is provided with a positioning sleeve that cooperates with the positioning pins. The outer diameter of the positioning sleeve is larger than the outer diameter of the positioning holes. The positioning sleeve is provided with tightening screws in the horizontal direction. After adjusting the size of the positioning pins, they are tightened by tightening the screws. The size of the positioning pins is matched with the size of the D port pipe of the four-way valve. The positioning pins extend into the D port pipe of the four-way valve to support the four-way valve in a vertical position.

[0011] The positioning side plate is provided with a V-shaped positioning groove, and a positioning connecting plate is provided between the two positioning side plates.

[0012] As a further embodiment of the present invention, the brake assembly includes a rubber ring groove disposed on the top surface of the mounting inner ring, a brake wheel disposed in the rubber ring groove, and two positioning nuts disposed in opposite directions on the adjustable threaded shaft. The two positioning nuts constitute a self-tightening structure. The brake wheel is fixedly disposed to the self-tightening structure by two parallel L-shaped connecting plates. The L-shaped connecting plates are provided with an adjustment elongated hole, which cooperates with the brake wheel through an adjustment nut.

[0013] As a further embodiment of the present invention, the slot lifting component includes a support ring that is screwed onto an adjustable threaded shaft. A plurality of locking blocks are evenly distributed along the circumference of the outer wall of the support ring. A connecting ring is fitted on the support ring. A slot that mates with the locking blocks is provided on the inner ring of the connecting ring. After the connecting ring is raised above the support ring, the slot and the locking blocks are staggered.

[0014] The connecting ring body and the mounting inner ring are provided with several corresponding through screw holes evenly distributed along the circumference. Through screws are provided in the through screw holes, and the through screws are matched with the through screw holes. The connecting ring and the mounting inner ring form a synchronously moving body.

[0015] As a further embodiment of the present invention, the screwing component includes a compass fixedly mounted on the top of the adjustable threaded shaft. Rotating the compass drives the adjustable threaded shaft to rotate and rise along the screw hole of the base. The screwing compass drives the adjustable threaded shaft to rotate synchronously, making the adjustment efficient and labor-saving.

[0016] The adjustable threaded shaft surface is coated with a molybdenum disulfide coating. The molybdenum disulfide coating provides lubrication while also offering rust protection.

[0017] As a further embodiment of the present invention, the system support includes a vertical lifting rod, a lower horizontal support rod at the bottom of the vertical lifting rod, an upper horizontal support rod at the top of the vertical support rod, and a cross-shaped bracket at the free end of the upper horizontal support rod. The cross-shaped bracket includes a vertical rod and a horizontal rotating rod. The end of the upper horizontal support rod is provided with a first sleeve that fits onto the vertical rod. A first locking hole is horizontally provided on the first sleeve, and a first locking screw is provided in the first locking hole. Through the first sleeve, the horizontal rotating rod moves vertically up and down along the vertical rod, achieving synchronous lifting and lowering with the vertical lifting rod.

[0018] A rotating sleeve is horizontally fitted at the lower part of the vertical rod. Both ends of the rotating sleeve are connected to the horizontal rotating rod. A second locking hole is horizontally provided on the rotating sleeve. A second locking screw is provided in the second locking hole. After the second locking screw is loosened, the horizontal rotating rod rotates around the vertical rod. The rotating sleeve slides on the vertical rod, and the horizontal rotating rod moves up and down.

[0019] The vertical lifting rod consists of interlocking vertical support rods and a lifting tube. Both the vertical support rods and the lifting tube have equidistant pin holes along their length. The lifting tube slides up and down along the vertical support rods. When the pin holes on the lifting tube correspond to the pin holes on the respective vertical support rods, pins are inserted into the pin holes for positioning. The relative displacement of the vertical support rods and the lifting tube allows the vertical lifting rod to extend and retract.

[0020] As a further embodiment of the present invention, the nitrogen supply assembly includes a nitrogen supply pipe connected to the supply system. The nitrogen supply pipe is connected to a pipe body welded to any port of the four-way valve. The nitrogen supply pipe is bound and fixed along the vertical lifting rod and the upper horizontal support rod of the system bracket. Nitrogen gas is introduced into the nitrogen supply pipe of the nitrogen supply assembly to keep the inside of the pipe clean and to prevent impurities from being generated during the welding process of the four-way valve, which would affect the clean environment inside the valve.

[0021] As a further embodiment of the present invention, the circulating water supply component includes a circulating water pipe, a water pump is provided at the lower end of the circulating water pipe, the water pump is set in a water tank, and the circulating water pipe is bound and fixed along the vertical lifting rod and the upper horizontal support rod of the system support.

[0022] A cooling water nozzle is installed at the outlet of the circulating water pipe. The cooling water nozzle is designed as a flat-mouthed fan shape and is tied to a horizontal rotating rod. The flat-mouthed fan shape of the cooling water nozzle makes the water flow more uniform and the cooling water spraying area larger.

[0023] As a further aspect of the invention, the water tank is provided with a semi-circular water-blocking ring plate, which can be used to block water when circulating water cools the valve body. The position of the water-blocking ring plate can be moved and adjusted. A pedal assembly is provided on the wall of the water tank without a water-blocking ring plate. The pedal assembly includes a pedal and a pedal hook. The pedal is horizontally positioned, and the pedal hook is vertically positioned on one side of the pedal, hooking onto the wall of the water tank. The pedal is ergonomically designed, and its position is adjustable. During welding, the user can step on the pedal for auxiliary support and to reduce the loss of bodily functions.

[0024] The bottom of the tank is equipped with a drain valve and several evenly distributed supports that contact the ground for support. Casters can be mounted on the supports. The circulating water supply system requires water replacement after prolonged use. The drain valve facilitates water replacement, ensuring clean circulating water during welding; this reduces impurities during welding, minimizing problems such as porosity and pinholes caused by impurities.

[0025] Compared with existing technologies, the advantages of this invention are as follows: This device includes a water tank, within which an adjustable threaded shaft is installed. The adjustable threaded shaft includes a base located at the bottom of the water tank, providing stable support for welding the four-way valve. The vertically installed adjustable threaded shaft passes through the base, and a screwing component is located at the top of the adjustable threaded shaft. Rotation of the screwing component allows for vertical adjustment of the adjustable threaded shaft. The adjustable threaded shaft is suitable for supporting compact models designed for cost reduction and efficiency improvement, such as dual-fan turbine models where the exhaust pipe assembly is very long, and the available space for the pipeline assembly within the housing assembly becomes smaller. Various series of four-way valves are assembled and welded on this fixture. The adjustable threaded shaft can be raised and lowered when welding at different heights, reducing the risk of back injuries caused by prolonged standing.

[0026] The screwing component drives the adjustable threaded shaft to be screwed synchronously with the screw hole of the base. The upper part of the adjustable threaded shaft is equipped with a rotating frame, and a bearing is provided between the rotating frame and the adjustable threaded shaft, which can achieve 360-degree rotation in both directions. A slot lifting component is provided below the bearing, and the bearing and the slot lifting component can be separated or move synchronously as a whole.

[0027] The rotating frame includes an inner mounting ring and a supporting outer ring. A brake assembly is provided on the top surface of the inner mounting ring. The brake assembly enables the rotating frame to decelerate and stop in time, stopping the rotating frame at the designated position. The supporting outer ring is provided with several valve body positioning parts evenly distributed around the circumference to support the D-port pipes of different models of four-way valves. The valve body positioning parts can support four-way valves of various models, satisfying the tooling fixation and welding of four-way valves with different pipe diameters.

[0028] The wall thickness of the outer ring supporting it is matched with the installation gap formed between the E port, S port and C port of the four-way valve, respectively. The installation gap of the four-way valve is fixed on the ring wall of the outer ring supporting it.

[0029] A system bracket is provided between the water tank and the supporting outer ring. The system bracket supports a nitrogen supply assembly for purging impurities from inside the four-way valve, and also a circulating water supply assembly for cooling the valve body. The system bracket supports both the nitrogen supply assembly and the circulating water supply assembly simultaneously, reducing the frequency of tooling adjustments. The nitrogen supply assembly can be adjusted in height along the system bracket to accommodate welders of different heights. The circulating water supply assembly can be adjusted vertically, horizontally, and vertically, and can rotate 360 ​​degrees to provide circulating water cooling for the valve body at different angles during welding.

[0030] Compared to the immersion welding used in the industry, the circulating water supply component is more conducive to maintaining water temperature. The welded valve body is submerged in water, which will be heated to a very high temperature. However, the circulating water can ensure that the water temperature is not heated too high and is maintained at around 20-30 degrees Celsius, which can better protect the valve body.

[0031] Through structural innovation, ergonomic optimization, and system integration, this device not only enables the welding of a series of four-way valves, but also provides an efficient and intelligent welding solution by reducing manpower input, improving welding quality, and shortening process time, thus meeting the industry's requirements for rapid product iteration and high precision. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the reverse-positioned assembly structure of the four-way valve of the present invention. Figure 1 ;

[0033] Figure 2 This is a schematic diagram of the reverse-positioned assembly structure of the four-way valve of the present invention. Figure 2 ;

[0034] Figure 3 This is a schematic diagram of the forward-facing assembly structure of the four-way valve of the present invention. Figure 1 ;

[0035] Figure 4 This is a schematic diagram of the forward-facing assembly structure of the four-way valve of the present invention. Figure 2 ;

[0036] Figure 5 This is a schematic diagram of the forward-facing assembly structure of the four-way valve of the present invention. Figure 3 ;

[0037] Figure 6 This is a schematic diagram of the overall structure of the present invention without the four-way valve. Figure 1 ;

[0038] Figure 7 This is a schematic diagram of the overall structure of the present invention without the four-way valve. Figure 2 ;

[0039] Figure 8 This is a schematic diagram of the overall structure of the present invention without the four-way valve. Figure 3 .

[0040] In the diagram: 1-Water tank, 101-Support, 111-Wheel caster, 102-Water baffle ring, 103-Drain valve, 2-Base, 3-Adjustable threaded shaft, 301-Tightening component, 311-Compass, 4-Valve body positioning component, 401-Positioning side plate, 411-V-type positioning groove, 402-Positioning connecting plate, 403-Positioning base plate, 404-Tightening screw, 405-Positioning sleeve, 406-Positioning column, 5-Rotating frame, 501-Outer support ring, 502-Inner mounting ring, 503-Bearing, 6-Nitrogen supply assembly, 601-Nitrogen supply pipe, 7-Circulating water supply assembly, 701-Circulating water pipe, 702-Cooling water nozzle, 8-System bracket, 801-Horizontal support rod, 802- Vertical lifting rod, 803-lower horizontal support rod, 811-vertical rod, 812-first sleeve, 813-first locking screw, 814-horizontal rotating rod, 815-rotating sleeve, 816-second locking screw, 821-lifting tube, 822-pin hole, 823-pin shaft, 824-vertical support rod, 9-pedal assembly, 901-pedal hook, 902-pedal, 10-slot lifting component, 1001-support ring, 1011-block, 1021-slot, 1022-through screw hole, 1023-through screw, 11-brake assembly, 1101-rubber ring groove, 1102-positioning nut, 1103-L-shaped connecting plate, 1104-brake wheel, 12-installation gap. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0042] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature means that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "below" of the second feature means that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] Example 1

[0045] As attached Figure 1-5 As shown, a tooling device for welding a series of modular four-way valves is provided to support the four-way valve. It includes a water tank 1, within which an adjustable threaded shaft 3 is installed. The adjustable threaded shaft includes a base 2 located at the bottom of the water tank, providing stable support for welding the four-way valve. The vertically positioned adjustable threaded shaft 3 passes through the base, which has a threaded hole. The adjustable threaded shaft is threaded into the threaded hole. A screwing component 301 is located at the top of the adjustable threaded shaft, allowing for vertical adjustment. The screwing component 301 includes a compass 311 fixedly mounted at the top of the adjustable threaded shaft. Rotating the compass causes the adjustable threaded shaft to rotate and move up and down along the threaded hole in the base. Forward rotation of the compass causes the adjustable threaded shaft to continuously screw into the threaded hole, resulting in a downward movement. Reverse rotation of the compass causes the adjustable threaded shaft to continuously screw out of the threaded hole, resulting in an upward movement. The surface of the adjustable threaded shaft is coated with a molybdenum disulfide coating. The molybdenum disulfide coating lubricates the adjustable threaded shaft during screwing into the threaded hole while also providing rust protection.

[0046] The adjustable threaded shaft is adapted to support compact models that have been optimized for cost reduction and efficiency improvement. For example, in the design of dual-rotor models, the exhaust pipe assembly is very long, and the available space for the piping assembly within the housing assembly becomes smaller. Various series of four-way valves are assembled and welded on this fixture. The adjustable threaded shaft can be raised and lowered when welding at different heights, reducing the risk of back injury caused by prolonged standing.

[0047] The screwing component 301 drives the adjustable threaded shaft to be screwed synchronously with the screw hole of the base, so that the adjustable threaded shaft can be raised and lowered vertically. The upper part of the adjustable threaded shaft is provided with a rotating frame 5, and a bearing 503 is provided between the rotating frame and the adjustable threaded shaft, which can realize 360-degree rotation in both directions. When the rotating frame is manually pushed, the rotating frame rotates circumferentially relative to the adjustable threaded shaft through the bearing.

[0048] The rotating frame 5 includes an inner mounting ring 502 and a supporting outer ring 501. A brake assembly 11 is provided on the top surface of the inner mounting ring. The brake assembly realizes the deceleration and braking of the rotating frame, and stops the rotating frame in time at a designated position. The brake assembly includes a rubber ring groove 1101 provided on the top surface of the inner mounting ring. A brake wheel 1104 is provided in the rubber ring groove. Two positioning nuts 1102 arranged in opposite directions are provided on the adjustable threaded shaft. The two positioning nuts form a self-tightening structure. The brake wheel is fixed to the self-tightening structure through two parallel L-shaped connecting plates 1103. An adjustment elongated hole is provided on the L-shaped connecting plate. The adjustment elongated hole cooperates with the brake wheel through an adjustment nut.

[0049] Depending on the usage conditions, the adjusting nut is engaged with the adjusting elongated hole, and the brake wheel is engaged with the surface of the rubber ring groove. This ensures smooth rotation of the rotating frame while the brake wheel provides braking. The inner ring rotates together with the outer supporting ring. When it reaches the predetermined position, the brake wheel applies the brakes, and the rotating frame stops rotating.

[0050] Before welding, the four-way valve needs to be fixed with tooling. Several valve body positioning components 4 are evenly distributed circumferentially along the outer ring to support the D-port pipes of different models of four-way valves. These valve body positioning components can support various models of four-way valves, satisfying the tooling fixation requirements for welding four-way valves of different pipe diameters. The valve body positioning component 4 includes several positioning frames set on the outer wall of the water tank for valve body positioning. Each positioning frame includes a positioning base plate 403 and two positioning side plates 401 on both sides. The positioning base plate has positioning holes, and positioning posts 406 pass through the positioning holes. A positioning sleeve 405, which mates with the positioning posts, is located at the lower part of the positioning base plate. The outer diameter of the positioning sleeve is larger than the outer diameter of the positioning hole. A tightening screw 404 is provided on the positioning sleeve in the horizontal direction. After adjusting the size of the positioning posts, they are tightened by the tightening screws. The size of the positioning posts matches the size of the D-port pipe of the four-way valve. The positioning posts extend into the D-port pipe of the four-way valve, supporting the four-way valve vertically.

[0051] When welding a large-sized four-way valve, a positioning pin that matches the size of the valve's D-port is installed in the positioning hole. The positioning pin is inserted into the positioning nut, and the height of the positioning pin extending beyond the upper surface of the positioning base plate is adjusted. The positioning pin 406 is then horizontally secured by tightening the screws, thus positioning the valve. The large-sized four-way valve's D-port mates with the positioning pin 406, which supports the valve. The valve's E-port, S-port, and C-port ports are vertically aligned upwards to facilitate welding these three ports to the external pipe body.

[0052] The positioning side plate 401 is provided with a V-shaped positioning groove 411, and a positioning connecting plate 402 is provided between the two positioning side plates. The valve body of the four-way valve can be placed horizontally on the V-shaped positioning groove. If the valve body is too large, a support body can be formed by the positioning side plate and the positioning connecting plate.

[0053] When welding a small-sized four-way valve, a positioning pin that matches the size of the valve's D-port is installed in the positioning hole. The positioning pin 406 is inserted into the positioning nut. The height of the positioning pin extending beyond the upper surface of the positioning base plate 1 is adjusted, and the positioning pin is horizontally secured by tightening the screws, thus positioning the pin 406. The positioning pin supports the small-sized four-way valve, with the D-port of the valve mates with it. The E-port, S-port, and C-port of the four-way valve are vertically upward, facilitating welding of these three ports to the external pipe body.

[0054] After the E, S, and C ports of the four-way valve are welded to the external pipe body, the D port needs to be welded to the external pipe body next.

[0055] The wall thickness of the outer ring 501 is matched with the installation gap 12 formed between the E port, S port and C port of the four-way valve, respectively. The installation gap of the four-way valve is fixed on the ring wall of the outer ring.

[0056] Based on the shape of the external pipes welded to the E, S, and C ports of the four-way valve, it can be determined whether the installation gap between any two adjacent pipe ports is convenient for fitting with the ring wall of the supporting outer ring. The installation gap between the E and S ports is then fitted with the ring wall of the supporting outer ring. After the support is stable, the welding of both the D port and the external pipe body is completed.

[0057] Example 2

[0058] As attached Figure 6-8 As shown, a slot lifting component 10 is provided below the bearing. The bearing and the slot lifting component can be separated or move synchronously as a whole. The slot lifting component includes a support ring 1001 that is screwed onto the adjustable threaded shaft. Several locking blocks 1011 are evenly distributed along the circumference of the outer wall of the support ring. A connecting ring 1002 is provided on the support ring. The inner ring of the connecting ring is provided with a slot 1021 that cooperates with the locking blocks. After the connecting ring is raised above the support ring, the slot and the locking blocks are staggered.

[0059] The connecting ring body and the mounting inner ring are provided with a number of corresponding through screw holes 1022 evenly distributed along the circumference. Through screws 1023 are provided in the through screw holes. The through screws and through screw holes are correspondingly engaged. The connecting ring and the mounting inner ring form a synchronously moving body.

[0060] When the adjustable threaded shaft 3 cannot meet the lifting speed and lifting stroke range by lifting alone, the rotating frame itself will lift as a whole.

[0061] Rotate the rotating frame 5, align the screw hole of the inner ring with the screw hole on the connecting ring body, and put the through screws into the through screw holes in sequence. The connecting ring 1002 and the inner ring 502 form a synchronously moving body.

[0062] The rotating frame continues to rotate, causing the connecting ring to rotate synchronously. The slot 1021 on the inner connecting ring and the block 1011 on the support ring are matched and engaged, so that the bearing and the slot lifting component form a whole.

[0063] The support ring is screwed along the adjustable threaded shaft; forward and reverse screwing causes the rotating frame to rise and fall. This, combined with the lifting and lowering of the adjustable threaded shaft, achieves the raising and lowering of the rotating frame.

[0064] Example 3

[0065] A system bracket 8 is provided between the water tank and the outer supporting ring. The system bracket includes a vertical lifting rod 802, a lower horizontal support rod 803 at the bottom of the vertical lifting rod, an upper horizontal support rod 801 at the top of the vertical support rod, and a cross-shaped bracket at the free end of the upper horizontal support rod. The cross-shaped bracket includes a vertical rod 811 and a horizontal rotating rod 814. A first sleeve 812 is provided at the end of the upper horizontal support rod and is fitted with the vertical rod. A first locking hole is provided horizontally on the first sleeve, and a first locking screw 813 is provided in the first locking hole.

[0066] First, loosen the first locking screw 813, move the first sleeve upward, and when it reaches the set height, tighten the first locking screw 813. The horizontal rotating rod moves vertically upward along the vertical rod to achieve synchronous lifting motion with the vertical lifting rod.

[0067] Alternatively, loosen the first locking screw 813 first, move the first sleeve downwards, and when it reaches the set height, tighten the first locking screw. The horizontal rotating rod will then move vertically downwards along the vertical rod, achieving synchronous descent with the vertical lifting rod.

[0068] A rotating sleeve 815 is horizontally sleeved at the lower part of the vertical rod. Both ends of the rotating sleeve are connected to the horizontal rotating rod 814. A second locking hole is horizontally provided on the rotating sleeve. A second locking screw 916 is provided in the second locking hole. After the second locking screw is loosened, the horizontal rotating rod rotates around the vertical rod. The rotating sleeve slides on the vertical rod, and the horizontal rotating rod moves up and down.

[0069] The vertical lifting rod includes interlocking vertical support rods 824 and lifting tubes 821. Both the vertical support rods and the lifting tube have equidistantly spaced pin holes 822 along their length. The lifting tube slides up and down along the vertical support rods. When the pin holes on the lifting tube correspond to the pin holes on the respective vertical support rods, pins 823 are inserted into the pin holes for positioning. The relative displacement of the vertical support rods and the lifting tubes allows the vertical lifting rod to extend and retract.

[0070] The vertical support rod 824 and the lifting tube 821 move towards each other. When they reach the required size, the pin hole on the lifting tube aligns with the pin hole on the vertical support rod, and the pin is inserted into the pin hole for fixation, thereby shortening the vertical lifting rod.

[0071] The vertical support rod 824 and the lifting tube 821 move apart. When they reach the required size, the pin hole on the lifting tube 821 aligns with the pin hole on the vertical support rod, and the pin is inserted into the pin hole for fixation, thereby extending the vertical lifting rod.

[0072] The system support bracket supports both the nitrogen gas supply component 6 and the circulating water supply component 7. With one system support bracket, the number of times the tooling needs to be adjusted is reduced. The nitrogen gas supply component can be adjusted in height along the system support bracket to meet the needs of welders of different heights.

[0073] A nitrogen supply assembly 6 for purging impurities inside the four-way valve is supported on the system bracket. The nitrogen supply assembly includes a nitrogen supply pipe 601 connected to the supply system. The nitrogen supply pipe is connected to a pipe body welded to any port of the four-way valve. The nitrogen supply pipe is bound and fixed along the vertical lifting rod and upper horizontal support rod of the system bracket. Nitrogen gas is introduced into the nitrogen supply pipe of the nitrogen supply assembly. The nitrogen supply pipe is connected to one of the four-way valve ports or the pipe body welded to the port. High-pressure nitrogen purges the inside of the pipe and the valve body, maintaining a clean internal environment and preventing impurities generated during the welding process from affecting the cleanliness of the valve's interior.

[0074] A circulating water supply assembly 7 is also provided to cool the four-way valve body. The circulating water supply assembly 7 includes a circulating water pipe 701, with a water pump at its lower end. The water pump is located in a water tank, and the circulating water pipe is fixedly tied along the vertical lifting rod and upper horizontal support rod of the system bracket; the circulating water pipe will not interfere with the movement of the rotating frame. The circulating water supply assembly can be adjusted up and down, forward and backward, and rotate 360 ​​degrees to meet the requirement of circulating water cooling the valve body at different angles during the welding of the four-way valve.

[0075] A cooling water nozzle 702 is provided at the outlet of the circulating water pipe. The cooling water nozzle is configured as a flat fan shape and is tied to a horizontal rotating rod.

[0076] During the welding process of the four-way valve, when cooling is required, the rotating frame rotates the four-way valve to a position directly opposite the cooling water nozzle. The water pump is then started, and cooling water from the tank is transported along the circulating water pipe to the cooling water nozzle. The cooling water nozzle uses a flat-mouthed, fan-shaped structure, resulting in a more uniform water flow and a larger water spray area, effectively cooling the entire four-way valve. After being poured onto the four-way valve for cooling, the cooling water flows down into the tank, mixing with the existing cooling water. This water circulation helps maintain the water temperature, ensuring it doesn't overheat and is kept at around 20-30 degrees Celsius, providing better protection for the valve body.

[0077] Example 4

[0078] The water tank is equipped with a semi-circular water-blocking ring plate 102. When the circulating water cools the valve body, it can be used to block water. After the cooling water is sprayed onto the four-way valve to cool it, the water-blocking ring plate blocks the cooling water as it falls, causing most of the cooling water to fall into the water tank, reducing outward splashing. The position of the water-blocking ring plate can be moved and adjusted, and it can be lengthened or shortened as needed.

[0079] A foot pedal assembly 9 is provided on the wall of the water tank without a water baffle. The foot pedal assembly includes a foot pedal 902 and a foot pedal hook 901. The foot pedal is set horizontally and the foot pedal hook is set vertically on one side of the foot pedal. The foot pedal hook is hooked on the wall of the water tank. The foot pedal is designed according to human mechanics and the position of the foot pedal can be adjusted. When welding, stepping on the foot pedal can help support and reduce the loss of human function.

[0080] The bottom of the tank is equipped with a drain valve 103 and several evenly distributed supports 101. After the circulating water supply component has been used for a long time, the water needs to be replaced. The drain valve is opened and closed to replace the water, drain the water with impurities, and add clean cooling water to ensure that the circulating cooling water is clean during the welding process. This way, there are fewer impurities left on the weld, avoiding problems such as porosity and sand holes in the weld due to impurities left on the weld.

[0081] The support 101 is in contact with the ground for support, and casters 111 can be installed on the support. When the water tank is not moving, it is placed on the ground supported by the support. When the water tank moves, the casters 111 are pre-installed on the support, so that the water tank can move under the push of external force.

[0082] In the description of this specification, the terms "connection," "installation," "fixing," and "setting," etc., are interpreted broadly. For example, "connection" can mean a fixed connection or an indirect connection via an intermediate component without affecting the relationship between components and the technical effect; it can also mean an integral connection or a partial connection. Those skilled in the art can understand the specific meaning of these terms in this invention or invention based on the specific circumstances. The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of this invention.

Claims

1. A tooling device for welding a series of modular combined four-way valves, used to support the four-way valve, characterized in that: Includes a water tank (1), an adjustable threaded shaft (3) is provided inside the water tank, and a tooling device includes a base (2) set at the bottom of the water tank, an adjustable threaded shaft is installed vertically inside the base, a screwing component (301) is provided at the top of the adjustable threaded shaft, the screwing component drives the adjustable threaded shaft to rotate synchronously and is screwed into the screw hole of the base to achieve lifting and lowering, a rotating frame (5) is provided on the upper part of the adjustable threaded shaft, a bearing (503) is provided between the rotating frame and the adjustable threaded shaft, a slot lifting component (10) is provided below the bearing, the bearing and the slot lifting component can be separated or move synchronously as a whole; The rotating frame includes an inner mounting ring (502) and a supporting outer ring (501). The top surface of the inner mounting ring is provided with a brake assembly (11), and the supporting outer ring is provided with several valve body positioning parts (4) evenly distributed along the circumference to support the D-port pipes of different types of four-way valves. The ring wall of the supporting outer ring (501) is respectively matched with the installation gap (12) formed between the two adjacent pipes of the four-way valve's E port pipe, S port pipe and C port pipe. The installation gap of the four-way valve is fixed on the ring wall of the supporting outer ring. A system support (8) is provided between the water tank and the outer ring of the support. A nitrogen gas supply assembly (6) for purging impurities in the four-way valve is provided on the system support. A circulating water supply assembly (7) for cooling the valve body of the four-way valve is also provided. The valve body positioning component (4) includes several positioning frames set on the outer wall of the water tank for valve body positioning. The positioning frame includes a positioning base plate and positioning side plates (401) on both sides. The positioning base plate is provided with positioning holes, and positioning pins (406) are inserted into the positioning holes. The lower part of the positioning base plate (403) is provided with a positioning sleeve (405) that cooperates with the positioning pins. The outer diameter of the positioning sleeve is larger than the outer diameter of the positioning hole. The positioning sleeve is provided with tightening screws (404) in the horizontal direction. After adjusting the size of the positioning pin, it is tightened by tightening screws. The size of the positioning pin (406) is matched with the size of the D port pipe of the four-way valve. The positioning pin (406) extends into the D port pipe of the four-way valve to support the four-way valve in a vertical position. The positioning side plate is provided with a V-shaped positioning groove (411), and a positioning connecting plate (402) is provided between the two positioning side plates. The brake assembly (11) includes a rubber ring groove (1101) on the top surface of the mounting inner ring, a brake wheel (1104) is provided in the rubber ring groove, and two positioning nuts (1102) are provided on the adjustable threaded shaft in opposite directions. The two positioning nuts form a self-tightening structure. The brake wheel is fixed to the self-tightening structure through two parallel L-shaped connecting plates. The L-shaped connecting plate (1103) is provided with an adjustment elongated hole, which cooperates with the brake wheel through an adjustment nut. The slot lifting component (10) includes a support ring (1001) that is screwed into the adjustable threaded shaft. Several locking blocks (1011) are evenly distributed along the circumference of the outer wall of the support ring. A connecting ring (1002) is provided on the support ring. A slot (1021) that cooperates with the locking blocks is provided on the inner ring of the connecting ring. After the connecting ring is lifted above the support ring, the slot and the locking blocks are staggered. The connecting ring body and the mounting inner ring are provided with a number of corresponding through screw holes (1022) evenly distributed along the circumference. Through screws (1023) are provided in the through screw holes. The through screws and through screw holes are matched accordingly. The connecting ring and the mounting inner ring form a synchronously moving body.

2. The tooling device for welding a series of modular combined four-way valves according to claim 1, characterized in that: The screwing component (301) includes a compass (311) fixedly mounted on the top of the adjustable threaded shaft. Rotating the compass drives the adjustable threaded shaft to rotate and rise along the screw hole of the base. The surface of the adjustable threaded shaft is coated with a molybdenum disulfide coating.

3. The tooling device for welding a series of modular combined four-way valves according to claim 2, characterized in that: The system support (8) includes a vertical lifting rod (802), a lower horizontal support rod (803) at the bottom of the vertical lifting rod, an upper horizontal support rod (801) at the top of the vertical lifting rod (802), a cross-shaped bracket at the free end of the upper horizontal support rod, the cross-shaped bracket including a vertical rod (811) and a horizontal rotating rod (814), a first sleeve (812) sleeved with the vertical rod at the end of the upper horizontal support rod, a first locking hole horizontally provided on the first sleeve, and a first locking screw (813) provided in the first locking hole. A rotating sleeve (815) is horizontally sleeved at the lower part of the vertical rod. Both ends of the rotating sleeve are connected to the horizontal rotating rod. A second locking hole is horizontally provided on the rotating sleeve. A second locking screw (816) is provided in the second locking hole. After the second locking screw is loosened, the horizontal rotating rod rotates around the vertical rod. The vertical lifting rod includes vertical support rods (824) and lifting tubes (821) that are inserted into each other. Both the vertical support rods and the lifting tubes are provided with pin holes (822) that are equidistantly arranged along the length direction. The lifting tubes slide up and down along the vertical support rods. When the pin holes on the lifting tubes correspond to the pin holes on the respective vertical support rods, pin shafts (823) are inserted into the pin holes for positioning.

4. The tooling device for welding a series of modular combined four-way valves according to claim 3, characterized in that: The nitrogen supply assembly (6) includes a nitrogen supply pipe (601) connected to the supply system. The nitrogen supply pipe is connected to a pipe body welded to any port of the four-way valve. The nitrogen supply pipe is bound and fixed along the vertical lifting rod and the upper horizontal support rod of the system support.

5. The tooling device for welding a series of modular combined four-way valves according to claim 4, characterized in that: The circulating water supply component (7) includes a circulating water pipe (701), a water pump is provided at the lower end of the circulating water pipe, the water pump is set in the water tank, and the circulating water pipe is tied and fixed along the vertical lifting rod and the upper horizontal support rod of the system support. A cooling water nozzle (702) is provided at the outlet of the circulating water pipe. The cooling water nozzle is configured as a flat fan shape and is tied to a horizontal rotating rod.

6. The tooling device for welding a series of modular combined four-way valves according to claim 5, characterized in that: The water tank (1) is provided with a semi-circular water baffle plate (102). The water tank wall without the water baffle plate is provided with a pedal assembly (9). The pedal assembly includes a pedal and a pedal hook (901). The pedal is horizontally set, and the pedal hook is vertically set on one side of the pedal (902). The pedal hook is hooked on the water tank wall. The bottom of the tank is equipped with a drain valve (103) and several evenly distributed supports (101). The supports are in contact with the ground for support, and casters (111) are mounted on the supports.

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