Tool device for welding series modular combined four-way valves

Abstract

The invention relates to the technical field of four-way valve welding positioning equipment, in particular to a tool device for welding series modular combined four-way valves, which comprises an adjustable threaded shaft arranged in a water tank and a base arranged at the bottom of the water tank, and a screwing piece is arranged at the top end of the adjustable threaded shaft vertically arranged in the base in a penetrating manner. The adjustable threaded shaft adapts to and supports a compact machine type after cost reduction and efficiency increase, the screwing piece drives the adjustable threaded shaft to be screwed with a base screw hole synchronously, the upper portion of the adjustable threaded shaft is provided with a rotating frame, a bearing is arranged between the rotating frame and the adjustable threaded shaft, 360-degree rotation in the forward and reverse directions can be achieved, and a clamping groove lifting piece is arranged below the bearing. The bearing and the clamping groove lifting piece can be separated or integrally and synchronously move; a system support is arranged between the water tank and the supporting outer ring, and a nitrogen supply assembly and a circulating water supply assembly are arranged on the system support in a supporting mode. Through structural innovation, man-machine engineering optimization and system integration, welding of series four-way valves is achieved, manpower input is reduced, and the welding quality is improved through efficient and intelligent welding.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning equipment for the welding of four-way valves, and particularly to a tooling device for welding a series of modular combined four-way valves. Background Art

[0002] In the production of refrigeration equipment, the four-way valve is a key component. At present, the welding and assembly of four-way valves mostly adopt manual welding or assisted welding with simple tooling. Due to the differences in pipe diameters and interface angles of different models of four-way valves, special tooling needs to be customized, resulting in high costs and long replacement cycles. The single-station tooling requires multiple clamping operations and cannot be adapted to the assembly line operation, resulting in low production efficiency. Manual welding has problems such as low welding accuracy and poor consistency, leading to unstable product quality and a high scrap rate; it is difficult for simple tooling to achieve precise positioning and reliable fixation of the complex pipelines and joints of the four-way valve, and defects such as dislocation, false soldering, lack of soldering, angle deviation, and reverse insertion of pipelines are prone to occur during the welding process. Although there are adjustable toolings in the prior art, most of them rely on a single adjustment mechanism and are difficult to simultaneously meet the requirements of precise positioning and rapid switching in multiple dimensions (axial, radial, angular). It is difficult to meet the needs of large-scale industrial production. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art and to solve the problems raised in the above background art, the technical problem to be solved by the present invention is to provide a tooling device for welding a series of modular combined four-way valves that can simultaneously perform welding operations on each welding part of the four-way valve assembly, cool the four-way valve through a circulating water system, and meet multiple models through multi-position adjustment.

[0004] The technical problem to be solved by the present invention is achieved through the following technical solutions. A tooling device for welding a series of modular combined four-way valves, used to support the four-way valve, includes a water tank. An adjustable threaded shaft is provided in the water tank. The adjustable threaded shaft includes a base provided at the bottom of the water tank. The base provides stable support for welding the four-way valve. A vertically arranged adjustable threaded shaft is passed through the base. A screwing member is provided at the top of the adjustable threaded shaft. The screwing member rotates to achieve the up and down adjustment of the adjustable threaded shaft. The adjustable threaded shaft is adapted to support the compact models after cost reduction and efficiency improvement. For example, in the design of the double-wind wheel model, the exhaust pipe assembly is designed very long, and the available space for the pipeline assembly in the box body assembly becomes smaller. Four-way valves of each series are assembled and welded on this tooling. When welding by personnel at different heights, the adjustable threaded shaft can be lifted and lowered to reduce the problem of waist damage of personnel caused by standing for a long time.

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

[0006] The rotating frame includes an inner mounting ring and an outer support ring. A braking component is provided on the top surface of the inner mounting ring. The braking component realizes the deceleration and braking functions of the rotating frame, and promptly brakes the rotating frame at a specified position. The outer support ring is circumferentially and evenly provided with a number of valve body positioning members for supporting the D-port pipes of different models of four-way valves; the valve body positioning members can support four-way valves of various models, meeting the tooling fixation of four-way valves with different pipe diameters for welding.

[0007] The wall thickness of the ring body of the outer support ring respectively matches the installation gaps formed between two adjacent pipes of the E-port pipe, S-port pipe, and C-port pipe of the four-way valve. The installation gap of the four-way valve is clamped on the ring wall of the outer support ring;

[0008] A system support is provided between the water tank and the outer support ring. The system support is provided with a nitrogen gas supply component for purging impurities in the four-way valve, and a circulating water supply component for cooling the valve body of the four-way valve. The system support supports the nitrogen gas supply component and the circulating water supply component at the same time. With one system support, the number of times of adjusting the tooling is reduced. The nitrogen gas supply component can be adjusted in height along the system support to meet the use of welders at different heights; the circulating water supply component can be adjusted up and down, back and forth, and rotated 360 degrees to meet the circulating water cooling of the valve body at different angles during the welding of the four-way valve.

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

[0010] As a further solution of the present invention, the valve body positioning member includes a number of positioning frames provided on the outer wall of the water tank for valve body positioning. The positioning frame includes a positioning bottom plate and positioning side plates on both sides. The positioning bottom plate is provided with positioning holes, and positioning columns are inserted into the positioning holes. A positioning sleeve is provided below the positioning bottom plate and is arranged in cooperation with the positioning column. 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 in the horizontal direction. After adjusting the size of the positioning column, it is tightened by the tightening screws. The size of the positioning column matches the size of the D-port pipe of the four-way valve, and the positioning column extends into the D-port pipe of the four-way valve to support the four-way valve vertically;

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

[0012] As a further solution of the present invention, the brake assembly includes a rubber ring groove arranged on the top surface of the mounting inner ring, a brake wheel is arranged in the rubber ring groove, two positioning nuts arranged in positive and negative directions are provided on the adjustable threaded shaft, the two positioning nuts constitute a self-tightening structure, the brake wheel is fixed to the self-tightening structure through two parallel L-shaped connecting plates, and the L-shaped connecting plate is provided with an adjusting long hole, and the adjusting long hole cooperates with the brake wheel through the adjusting nut.

[0013] As a further solution of the present invention, the slot lifting member includes a support ring screwed with an adjustable threaded shaft, a plurality of clamping blocks are evenly distributed along the circumference of the outer wall of the support ring, a connecting ring is matched with the support ring, and a slot that cooperates with the clamping block is provided on the inner ring of the connecting ring. After the connecting ring is raised above the support ring, the slot and the clamping block are staggered.

[0014] The connecting ring body and the mounting inner ring are evenly distributed with a number of corresponding through screw holes along the circumferential direction. Through screws are arranged in the through screw holes. The through screws correspond to the through screw holes. The connecting ring and the mounting inner ring form a synchronous moving body.

[0015] As a further solution of the present invention, the screwing part includes a compass fixedly arranged on the top end of the adjustable threaded shaft. Rotating the compass drives the adjustable threaded shaft to be rotated and raised along the screw hole of the base. Rotating the compass drives the adjustable threaded shaft to rotate synchronously, making the adjustment efficient and labor-saving.

[0016] The adjustable threaded shaft is coated with molybdenum disulfide, which provides lubrication and rust protection.

[0017] As a further solution of the present invention, the system bracket includes a vertical lifting rod, a lower horizontal support rod is provided at the bottom end of the vertical lifting rod, an upper horizontal support rod is provided at the top end of the vertical support rod, a cross-shaped bracket is provided 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 is sleeved with the vertical rod, a first locking hole is horizontally provided on the first sleeve, and a first locking screw is provided in the first lock hole; through the first sleeve, the horizontal rotating rod moves vertically up and down along the vertical rod, thereby achieving synchronous lifting and lowering with the vertical lifting rod.

[0018] A rotating sleeve is horizontally sleeved on the lower part of the vertical rod, and both ends of the rotating sleeve are connected to the horizontal rotating rod. A second locking hole is horizontally provided on the rotating sleeve, and a second locking screw is provided in the second locking hole. After the second locking screw is loosened, the horizontal rotating rod rotates circumferentially along the vertical rod; the rotating sleeve slides on the vertical rod to realize the lifting and lowering movement of the actual horizontal rotating rod.

[0019] The vertical lifting rod includes a vertical support rod and a lifting tube that are inserted into each other. The vertical support rod and the lifting tube are both provided with pin holes at equal intervals along the length direction. The lifting tube slides up and down along the vertical support rod. When the pin holes on the lifting tube correspond to the pin holes on the vertical support rod respectively, a pin shaft is inserted into the pin holes for positioning. The relative displacement of the vertical support rod and the lifting tube realizes the elongation and shortening of the vertical lifting rod.

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

[0021] As a further solution of the present invention, the circulating water supply assembly includes a circulating water pipe. A water pump is provided at the lower end of the circulating water pipe. The water pump is arranged in a water tank. The circulating water pipe is bundled and fixed along the vertical lifting rod and the upper horizontal support rod of the system bracket;

[0022] A cooling water spray head is provided at the outlet of the circulating water pipe. The cooling water spray head is set to be a flat-mouth fan shape. The cooling water spray head is bundled on the horizontal rotating rod. The cooling water spray head adopts a flat-mouth fan-shaped structure, making the water flow more uniform and the watering area of the cooling water larger.

[0023] As a further solution of the present invention, a semi-circular water retaining ring plate is provided on the water tank, which can be used to retain water when cooling the circulating water valve body. The position of the water retaining ring plate can be moved and adjusted. A pedal assembly is provided on the tank wall of the water tank where the water retaining ring plate is not provided. The pedal assembly includes a pedal and a pedal hook. The pedal is horizontally arranged, and the pedal hook is vertically arranged on one side of the pedal. The pedal hook is hooked on the tank wall of the water tank; the pedal conforms to the ergonomic design, and the position of the pedal can be adjusted. When welding, one can step on the pedal to assist in supporting and reducing the loss of human body functions.

[0024] A drain valve and several uniformly distributed supports are provided at the bottom of the tank body. The supports are in contact with the ground for support, and universal wheels can be assembled on the supports. After the circulating water supply assembly is used for a long time, the water needs to be replaced. The opening and closing of the drain valve makes the water replacement more convenient, ensuring the cleanliness of the circulating water during the welding process; there are fewer impurities during welding, reducing problems such as pores and sand holes caused by impurities.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: The device includes a water tank, in which an adjustable threaded shaft is provided. The adjustable threaded shaft includes a base arranged at the bottom of the water tank. The base provides stable support for the welded four-way valve. A vertically arranged adjustable threaded shaft passes through the base. A screwing member is provided at the top of the adjustable threaded shaft. The screwing member rotates to realize the up-and-down adjustment of the adjustable threaded shaft. The adjustable threaded shaft is adapted to support the compact models after cost reduction and efficiency improvement. For example, in the design of the double impeller model, the exhaust pipe assembly is designed very long, and the available space for the pipeline assembly in the box assembly becomes smaller. The four-way valves of each series are assembled and welded on this tooling. When welding by personnel at different heights, the adjustable threaded shaft rises and falls, reducing the problem of waist damage of personnel due to long-term standing.

[0026] The screwing member drives the adjustable threaded shaft to synchronously screw with the threaded hole of the base. A rotating frame is provided on the upper part of the adjustable threaded shaft. A bearing is provided between the rotating frame and the adjustable threaded shaft, which can realize 360-degree rotation in both forward and reverse directions. A clamping groove lifting member is provided below the bearing. The bearing and the clamping groove lifting member can be separated or move synchronously as a whole;

[0027] The rotating frame includes an installation inner ring and a support outer ring. A braking component is provided on the top surface of the installation inner ring. The braking component realizes the deceleration and stopping functions of the rotating frame, and timely stops the rotating frame at a specified position. A plurality of valve body positioning members for supporting the D-port pipes of different models of four-way valves are evenly distributed along the circumferential direction of the support outer ring; The valve body positioning members can support the four-way valves of various models, meeting the tooling fixation and welding of four-way valves with different pipe diameters.

[0028] The wall thickness of the ring body of the support outer ring respectively matches the installation gaps formed between two adjacent pipes of the E-port pipe, S-port pipe and C-port pipe of the four-way valve. The installation gap of the four-way valve is clamped on the ring wall of the support outer ring;

[0029] A system support is provided between the water tank and the support outer ring. A nitrogen gas supply component for purging impurities in the four-way valve is supported on the system support, and a circulating water supply component for cooling the four-way valve body is also provided. The system support supports the nitrogen gas supply component and the circulating water supply component at the same time. With one system support, the number of times of adjusting the tooling is reduced. The nitrogen gas supply component can be adjusted in height along the system support to meet the use of welding personnel at different heights; The circulating water supply component can be adjusted up and down, back and forth, and rotated 360 degrees to meet the circulating water cooling of the valve body at different angles during the welding of the four-way valve.

[0030] Compared with the immersion welding method used in the industry, the implementation of water circulation by the circulating water supply component is more conducive to maintaining the water temperature. When the welded valve body is submerged in water, the water will be heated to a very high temperature. However, the circulating water watering can ensure that the water temperature will not be heated too high and is maintained at about 20 - 30 degrees, which can provide better protection for the valve body.

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

[0032] Figure 1 Schematic diagram of the reverse placement and assembly structure of the four-way valve of the present invention Figure 1 ;

[0033] Figure 2 Schematic diagram of the reverse placement and assembly structure of the four-way valve of the present invention Figure 2 ;

[0034] Figure 3 Schematic diagram of the forward placement and assembly structure of the four-way valve of the present invention Figure 1 ;

[0035] Figure 4 Schematic diagram of the forward placement and assembly structure of the four-way valve of the present invention Figure 2 ;

[0036] Figure 5 Schematic diagram of the forward placement and assembly structure of the four-way valve of the present invention Figure 3 ;

[0037] Figure 6 Schematic diagram of the overall structure of the device without the four-way valve of the present invention Figure 1 ;

[0038] Figure 7 Schematic diagram of the overall structure of the device without the four-way valve of the present invention Figure 2 ;

[0039] Figure 8 Schematic diagram of the overall structure of the device without the four-way valve of the present invention Figure 3 。

[0040] In the figure: 1 - water tank, 101 - support, 111 - universal wheel, 102 - water retaining ring plate, 103 - drain valve, 2 - base, 3 - adjustable threaded shaft, 301 - screwing part, 311 - compass, 4 - valve body positioning part, 401 - positioning side plate, 411 - V-shaped positioning groove, 402 - positioning connecting plate, 403 - positioning bottom plate, 404 - tightening screw, 405 - positioning sleeve, 406 - positioning column, 5 - rotating frame, 501 - support outer ring, 502 - mounting inner ring, 503 - bearing, 6 - nitrogen gas supply component, 601 - nitrogen gas supply pipe, 7 - circulating water supply component, 701 - circulating water pipe, 702 - cooling water spray head, 8 - system support, 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 pipe, 822 - pin hole, 823 - pin shaft, 824 - vertical support rod, 9 - pedal assembly, 901 - pedal hook, 902 - pedal, 10 - card slot lifting part, 1001 - support ring, 1011 - clamping block, 1021 - card slot, 1022 - through 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 mode

[0041] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further details the present invention through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0043] In the present invention, unless otherwise clearly specified and defined, when a first feature is "on" or "under" a second feature, it means that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when the first feature is "above", "over" and "on top of" the second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. When the first feature is "under", "beneath" and "underneath" the second feature, it means that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0044] Embodiment 1

[0045] As shown in the Figures 1 - 5 accompanying drawings, a tooling device for welding a series of modular combined four-way valves, which is used to support the four-way valve, includes a water tank 1. An adjustable threaded shaft 3 is provided in the water tank. The adjustable threaded shaft includes a base 2 provided at the bottom of the water tank. The base provides stable support for welding the four-way valve. A vertically arranged adjustable threaded shaft 3 is passed through the base. Threaded holes are provided on the base. The adjustable threaded shaft is in threaded cooperation with the threaded holes. A screwing member 301 is provided at the top of the adjustable threaded shaft. The screwing member rotates to realize the up and down adjustment of the adjustable threaded shaft. The screwing member 301 includes a compass 311 fixedly provided at the top of the adjustable threaded shaft. Rotating the compass drives the adjustable threaded shaft to screw and lift along the threaded hole of the base. When the compass is screwed forward, the adjustable threaded shaft is continuously screwed into the threaded hole, and the adjustable threaded shaft moves downward. When the compass is screwed backward, the adjustable threaded shaft is continuously screwed out of the threaded hole, and the adjustable threaded shaft moves upward. A molybdenum disulfide coating is coated on the surface of the adjustable threaded shaft. The molybdenum disulfide coating plays a role in lubrication and rust protection during the screwing process of the adjustable threaded shaft and the threaded hole.

[0046] The adjustable threaded shaft is adapted to support the compact models after cost reduction and efficiency improvement. For example, in the design of the double impeller model, the exhaust pipe assembly is designed very long, and the available space for the pipeline assembly in the box assembly becomes smaller. Four-way valves of each series are assembled and welded on this tooling. When welding by operators at different heights, the adjustable threaded shaft can be lifted or lowered, reducing the damage to the waist of operators due to long-term standing.

[0047] The screwing member 301 drives the adjustable threaded shaft to synchronously screw with the threaded hole of the base, so that the adjustable threaded shaft moves up and down vertically. 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, which can realize 360-degree rotation in both forward and reverse directions. Manually push the rotating frame, and the rotating frame rotates circumferentially relative to the adjustable threaded shaft through the bearing.

[0048] The rotating rack 5 includes a mounting inner ring 502 and a supporting outer ring 501. A braking assembly 11 is provided on the top surface of the mounting inner ring. The braking assembly realizes the deceleration and braking functions of the rotating rack, and promptly brakes the rotating rack at a specified position. The braking assembly includes a rubber ring groove 1101 provided on the top surface of the mounting inner ring. A braking wheel 1104 is provided in the rubber ring groove. Two positioning nuts 1102 are provided on the adjustable threaded shaft and are arranged in opposite directions. The two positioning nuts form a self-tightening structure. The braking wheel is fixedly arranged with the self-tightening structure through two parallel L-shaped connecting plates 1103. An adjusting long hole is provided on the L-shaped connecting plate, and the adjusting long hole is matched with the braking wheel through an adjusting nut.

[0049] According to different usage states, the adjusting nut is matched with the adjusting long hole, and the braking wheel is matched with the surface of the rubber ring groove, ensuring the smooth rotation of the rotating rack while the braking wheel plays a braking role. The mounting inner ring rotates integrally with the supporting outer ring. When it rotates to a predetermined position, the braking wheel brakes and the rotating rack stops rotating.

[0050] Before welding, it is necessary to fix the four-way valve with a tooling. A plurality of valve body positioning members 4 for supporting the D-port pipes of different models of four-way valves are evenly arranged along the circumference of the supporting outer ring; the valve body positioning members can support four-way valves of various models, meeting the tooling fixation and welding requirements of four-way valves with different pipe diameters. The valve body positioning member 4 includes a plurality of positioning brackets provided on the outer wall of the water tank for valve body positioning. The positioning bracket includes a positioning bottom plate 403 and positioning side plates 401 on both sides. A positioning hole is provided on the positioning bottom plate, and a positioning column 406 is inserted into the positioning hole. A positioning sleeve 405 is provided below the positioning bottom plate and is arranged in cooperation with the positioning column. The outer diameter of the positioning sleeve is larger than the outer diameter of the positioning hole. A tightening screw 404 is arranged horizontally on the positioning sleeve. After adjusting the size of the positioning column, it is fastened by the tightening screw. The size of the positioning column is matched with the size of the D-port pipe of the four-way valve, and the positioning column extends into the D-port pipe of the four-way valve to support the four-way valve vertically;

[0051] When welding a four-way valve of a large model, the positioning column matched with the D-port pipe size of the four-way valve of the large model is installed in the positioning hole, and the positioning column passes through the positioning nut. After adjusting the height of the positioning column protruding from the upper surface of the positioning bottom plate, the positioning column 406 is transversely tightened and fixed by the tightening screw, and the positioning column 406 is positioned. The D-port pipe of the four-way valve of the large model is matched with the positioning column 406, and the positioning column supports the four-way valve of the large model. The E-port pipe, S-port pipe, and C-port pipe of the four-way valve are arranged vertically upward, facilitating the welding of these three pipe orifices with external pipe bodies.

[0052] A V-shaped positioning groove 411 is provided on the positioning side plate 401, and a positioning connecting plate 402 is provided between the two positioning side plates. The valve body of the four-way valve can be horizontally placed on the V-shaped positioning groove. In the case of an oversized valve body, a placing and supporting body can be formed by the positioning side plate and the positioning connecting plate.

[0053] When welding a small four-way valve, install a locating post that matches the size of the D-port tube of the small four-way valve in the locating hole. Insert locating post 406 into the locating nut. Adjust the height of the locating post extending above the upper surface of the locating base plate 1. Tighten the screws to laterally secure the post. Locating post 406 is positioned. The D-port tube of the small four-way valve cooperates with the locating post, which supports the small four-way valve. The E-port, S-port, and C-port tubes of the four-way valve are positioned 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 should be welded to the external pipe body.

[0055] The wall thickness of the supporting outer ring 501 matches the installation gap 12 formed between two adjacent pipes of the E-port pipe, the S-port pipe and the C-port pipe of the four-way valve. The installation gap of the four-way valve is fixed on the ring wall of the supporting outer ring.

[0056] Based on the shapes of the external pipes welded to the four-way valve's E, S, and C ports, determine whether the installation gap between any two adjacent pipe ports is convenient for matching with the support outer ring wall. Align the installation gap between the E and S ports with the support outer ring wall. Once the support is stable, weld the D port to the external pipe body.

[0057] Example 2

[0058] As attached Figures 6 - 8 As shown, a slot lifter 10 is provided below the bearing, and the bearing and the slot lifter can be separated or moved synchronously as one; the slot lifter includes a support ring 1001 screwed with an adjustable threaded shaft, and a plurality of blocks 1011 are evenly distributed along the circumference of the outer wall of the support ring. A coupling ring 1002 is provided on the support ring, and a slot 1021 that cooperates with the block is provided on the inner ring of the coupling ring. After the coupling ring is raised above the support ring, the slot and the block are staggered.

[0059] The connecting ring body and the inner mounting ring are evenly distributed with a number of corresponding through screw holes 1022 along the circumferential direction. Through screws 1023 are arranged in the through screw holes. The through screws and the through screw holes cooperate with each other, and the connecting ring and the inner mounting ring form a synchronous moving body.

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

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

[0062] The rotating rack continues to rotate, driving the connecting ring to rotate synchronously. The clamping grooves 1021 on the inner connecting ring and the clamping blocks 1011 on the supporting ring are correspondingly and cooperatively clamped one by one, so that the bearing and the clamping groove lifting member form an integral body.

[0063] The supporting ring is screwed along the adjustable threaded shaft. Forward screwing and reverse screwing drive the rotating rack to rise and fall. The lifting of the rotating rack is realized jointly with the lifting of the adjustable threaded shaft.

[0064] Embodiment 3

[0065] A system support 8 is provided between the water tank and the outer supporting ring. The system support includes a vertical lifting rod 802. A lower horizontal support rod 803 is provided at the bottom end of the vertical lifting rod. An upper horizontal support rod 801 is provided at the top end of the vertical support rod. A cross-shaped support is provided at the free end of the upper horizontal support rod. The cross-shaped support includes a vertical rod 811 and a horizontal rotating rod 814. A first sleeve 812 sleeved with the vertical rod is provided at the end of the upper horizontal support rod. A first locking hole is horizontally provided on the first sleeve. 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. When it moves to the set height, tighten the first locking screw 813. The horizontal rotating rod moves vertically upward along the vertical rod, realizing synchronous lifting movement with the vertical lifting rod.

[0067] Or first loosen the first locking screw 813, move the first sleeve downward. When it moves to the set height, tighten the first locking screw. The horizontal rotating rod moves vertically downward along the vertical rod, realizing synchronous descending movement with the vertical lifting rod.

[0068] A rotating sleeve 815 is horizontally sleeved on 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 circumferentially along the vertical rod. The rotating sleeve slides on the vertical rod, realizing the lifting movement of the horizontal rotating rod.

[0069] The vertical lifting rod includes a vertical support rod 824 and a lifting pipe 821 that are inserted into each other. Pin holes 822 are equidistantly provided along the length directions of the vertical support rod and the lifting pipe. The lifting pipe slides up and down along the vertical support rod. When the pin holes on the lifting pipe correspond to the pin holes on the vertical support rod respectively, a pin shaft 823 is inserted into the pin holes for positioning. The relative displacement of the vertical support rod and the lifting pipe realizes the elongation and shortening of the vertical lifting rod.

[0070] The vertical support rod 824 and the lifting pipe 821 move towards each other. When they move to the required size, the pin holes on the lifting pipe are made to correspond to the pin holes on the vertical support rod, and the pin shaft is inserted into the pin holes for fixation, realizing the shortening of the vertical lifting rod.

[0071] The vertical support rod 824 and the lifting pipe 821 move away from each other. When they move to the required size, the pin holes on the lifting pipe 821 are aligned with the pin holes on the vertical support rod, and a pin shaft is inserted into the pin holes for fixation, realizing the elongation of the vertical lifting rod.

[0072] The system support simultaneously supports the nitrogen gas supply component 6 and the circulating water supply component 7. Being supported by one system support reduces the number of adjustment tools. The nitrogen gas supply component can be adjusted in height along the system support to meet the needs of welders at different heights.

[0073] The system support is provided with a nitrogen gas supply component 6 for purging impurities in the four-way valve. The nitrogen gas supply component includes a nitrogen gas supply pipe 601 connected to the gas supply system. The nitrogen gas supply pipe is connected to the pipe body welded to any pipe orifice of the four-way valve. The nitrogen gas supply pipe is bundled and fixed along the vertical lifting rod and the upper horizontal support rod of the system support. Nitrogen gas is introduced into the nitrogen gas supply pipe of the nitrogen gas supply component. The nitrogen gas supply pipe is connected to one of the pipe orifices of the four-way valve or the pipe body welded to the pipe orifice. High-pressure nitrogen gas purges the inside of the pipe and the valve body to keep the internal environment of the valve body clean, preventing impurities from being generated during the welding process of the four-way valve and affecting the clean environment inside the valve.

[0074] There is also a circulating water supply component 7 for cooling the valve body of the four-way valve. 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 arranged in a water tank. The circulating water pipe is bundled and fixed along the vertical lifting rod and the upper horizontal support rod of the system support. The circulating water pipe will not interfere with the movement of the rotating rotating frame. The circulating water supply component can be adjusted up and down, back and forth, and rotated 360 degrees to meet the circulating water cooling of the valve body at different angles during the welding of the four-way valve.

[0075] A cooling water spray head 702 is provided at the outlet of the circulating water pipe. The cooling water spray head is set as a flat-mouth fan shape and is bundled on the horizontal rotating rod.

[0076] During the welding process of the four-way valve, when cooling is required, the rotating frame drives the four-way valve to rotate to a position directly facing the cooling water spray head. The water pump is started, and the cooling water in the water tank is transported along the circulating water pipe to the cooling water spray head. The cooling water spray head has a flat-mouth fan-shaped structure, and the sprayed water flow is more uniform, and the watering area of the cooling water is larger, watering the entire four-way valve for cooling. After the cooling water is poured on the four-way valve for cooling, it flows down along the four-way valve into the water tank, mixes with the cooling water in the water tank, and it is more conducive to maintaining the water temperature through the water cycle. Circulating water watering can ensure that the water temperature will not be heated too high and is maintained at about 20 - 30 degrees, providing better protection for the valve body.

[0077] Embodiment 4

[0078] A semi-circular water baffle ring plate 102 is provided on the water tank. When the circulating water cools the valve body, it can be used to block water. After the cooling water sprays onto the four-way valve to cool the four-way valve and then falls, the water baffle ring plate blocks the cooling water, and most of the cooling water falls into the water tank, reducing splashing outwards. The position of the water baffle ring plate can be moved and adjusted, and the water baffle ring plate can be lengthened or shortened according to actual needs.

[0079] A pedal assembly 9 is provided on the water tank wall without the water baffle ring plate. The pedal assembly includes a pedal 902 and a pedal hook 901. The pedal is horizontally arranged, and the pedal hook is vertically arranged on one side of the pedal. The pedal hook is hooked on the water tank wall; the pedal is designed according to human mechanics, and the position of the pedal can be adjusted. When welding, step on the pedal to assist in supporting and reducing the loss of human function.

[0080] A drain valve 103 and several uniformly arranged supports 101 are provided at the bottom of the tank body. After the circulating water supply component has been used for a long time, it is necessary to change the water. Open and close the drain valve to change the water, drain the water with impurities, and re-add clean cooling water to ensure the cleanliness of the circulating cooling water during the welding process; in this way, there are fewer impurities remaining on the weld, avoiding problems such as pores and sand holes in the weld due to the impurities remaining on the weld.

[0081] The support 101 is in contact with the ground for support, and a universal wheel 111 can be assembled on the support. When the water tank does not move, it is placed on the ground through the support. When the water tank moves, the universal wheel 111 is pre-assembled on the support so that the water tank can be moved under the push of an external force.

[0082] In the description of this specification, terms such as "connection", "installation", "fixation", "setting" are all understood in a broad sense. For example, "connection" is a fixed connection or indirectly through an intermediate component without affecting the relationship between components and technical effects, and it is also an integral connection or a partial connection. In this case, for those of ordinary skill in the art, the specific meanings of the above terms in this invention or invention can be understood according to specific circumstances. The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present 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: The invention comprises a water tank (1), wherein an adjustable threaded shaft (3) is provided in the water tank, wherein the adjustable threaded shaft comprises a base (2) provided at the bottom of the water tank, wherein the adjustable threaded shaft is vertically provided in the base, wherein a screwing member (301) is provided at the top of the adjustable threaded shaft, wherein the screwing member drives the adjustable threaded shaft to be screwed synchronously with the screw hole of the base, wherein a rotating frame (5) is provided on the upper part of the adjustable threaded shaft, wherein a bearing (503) is provided between the rotating frame and the adjustable threaded shaft, wherein a slot lifting member (10) is provided below the bearing, wherein the bearing and the slot lifting member can be separated or move synchronously as one body; The rotating frame comprises an inner mounting ring (502) and an outer supporting ring (501), a brake assembly (11) is provided on the top surface of the inner mounting ring, and a plurality of valve body positioning members (4) for supporting D-port pipes of four-way valves of different models are evenly distributed along the circumference of the outer supporting ring; The wall thickness of the supporting outer ring (501) matches the installation gap (12) formed between two adjacent pipes of the E-port pipe, the S-port pipe and the C-port pipe of the four-way valve, and the installation gap of the four-way valve is clamped on the ring wall of the supporting outer ring; A system bracket (8) is provided between the water tank and the supporting outer ring. The system bracket supports a nitrogen gas supply component (6) for purging impurities in the four-way valve, and a circulating water supply component (7) for cooling the four-way valve body.

2. The tooling device for welding a series of modular combined four-way valves according to claim 1, characterized in that: The valve body positioning member (4) includes a plurality of positioning frames arranged on the outer wall of the water tank for positioning the valve body, the positioning frames including a positioning base plate and positioning side plates (401) on both sides, the positioning base plate is provided with a positioning hole, a positioning column (406) is passed through the positioning hole, a positioning sleeve (405) is provided at the lower part of the positioning base plate (403) and is arranged in cooperation with the positioning column, the outer diameter of the positioning sleeve is larger than the outer diameter of the positioning hole, the positioning sleeve is provided with a tightening screw (404) in the horizontal direction, and the positioning column is tightened by tightening the screw after the size of the positioning column is adjusted, the size of the positioning column (406) matches the size of the D-port pipe of the four-way valve, and the positioning column (406) extends into the D-port pipe of the four-way valve to support the four-way valve in a vertical arrangement; A V-shaped positioning groove (411) is provided on the positioning side plates, and a positioning connecting plate (402) is provided between the two positioning side plates.

3. The tooling device for welding a series of modular combined four-way valves according to claim 2, characterized in that: The brake assembly (11) includes a rubber ring groove (1101) arranged on the top surface of the mounting inner ring, a brake wheel (1104) is arranged in the rubber ring groove, two positioning nuts (1102) arranged in positive and negative directions are provided on the adjustable threaded shaft, the two positioning nuts constitute a self-tightening structure, the brake wheel is fixed to the self-tightening structure through two parallel L-shaped connecting plates, and an adjusting long hole is provided on the L-shaped connecting plate (1103), and the adjusting long hole cooperates with the brake wheel through the adjusting nut.

4. The tooling device for welding a series of modular combined four-way valves according to claim 3, characterized in that: The slot lifting member (10) comprises a support ring (1001) screwed with an adjustable threaded shaft, a plurality of clamping blocks (1011) are evenly distributed along the circumference of the outer wall of the support ring, a connecting ring (1002) is matched with the support ring, and a slot (1021) matched with the clamping block is provided on the inner ring of the connecting ring, and after the connecting ring is lifted above the support ring, the slot and the clamping block are staggered. A number of corresponding through screw holes (1022) are evenly distributed along the circumferential direction between the connecting ring body and the installation inner ring. Through screws (1023) are arranged in the through screw holes, and the through screws are correspondingly matched with the through screw holes, so that the connecting ring and the installation inner ring form a synchronous moving body.

5. The tooling device for welding a series of modular combined four-way valves according to claim 4, characterized in that: The screwing member (301) includes a compass (311) fixedly arranged at the top end of the adjustable threaded shaft. Rotating the compass drives the adjustable threaded shaft to screw up and down along the base screw hole, and a molybdenum disulfide coating is coated on the surface of the adjustable threaded shaft.

6. The tooling device for welding a series of modular combined four-way valves according to claim 5, characterized in that: The system bracket (8) includes a vertical lifting rod (802). A lower horizontal support rod (803) is arranged at the bottom end of the vertical lifting rod, and an upper horizontal support rod (801) is arranged at the top end of the vertical support rod. A cross-shaped bracket is arranged 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) sleeved with the vertical rod is arranged at the end of the upper horizontal support rod. A first locking hole is horizontally arranged on the first sleeve, and a first locking screw (813) is arranged in the first locking hole. A rotating sleeve (815) is horizontally sleeved on 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 arranged on the rotating sleeve, and a second locking screw (816) is arranged in the second locking hole. After the second locking screw is loosened, the horizontal rotating rod rotates circumferentially along the vertical rod. The vertical lifting rod includes a vertical support rod (824) and a lifting pipe (821) inserted into each other. Pin holes (822) are equidistantly arranged along the length direction of the vertical support rod and the lifting pipe. The lifting pipe slides up and down along the vertical support rod. When the pin holes on the lifting pipe correspond to the pin holes on the vertical support rod respectively, a pin shaft (823) is inserted into the pin holes for positioning.

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

8. The tooling device for welding a series of modular combined four-way valves according to claim 7, characterized in that: The circulating water supply assembly (7) includes a circulating water pipe (701). A water pump is arranged at the lower end of the circulating water pipe. The water pump is arranged in a water tank. The circulating water pipe is bundled and fixed along the direction of the vertical lifting rod and the upper horizontal support rod of the system bracket. A cooling water spray head (702) is arranged at the outlet of the circulating water pipe. The cooling water spray head is set to be a flat-mouth fan shape, and the cooling water spray head is bundled on the horizontal rotating rod.

9. The tooling device for welding a series of modular combined four-way valves according to claim 8, characterized in that: A semi-circular water retaining ring plate (102) is arranged on the water tank (1). A pedal assembly (9) is arranged on the tank wall of the water tank where the water retaining ring plate is not arranged. The pedal assembly includes a pedal and a pedal hook (901). The pedal is horizontally arranged, and the pedal hook is vertically arranged on one side of the pedal (902). The pedal hook is hooked on the tank wall of the water tank. A drain valve (103) and a number of uniformly distributed supports (101) are arranged at the bottom of the tank body. The supports are in contact with the ground for support, and universal wheels (111) can be assembled on the supports.

Images