Tank welding auxiliary device

Abstract

The invention discloses a tank body welding auxiliary device which comprises an upper tank body, a lower tank body, an argon gas inlet pipe, an argon gas outlet gap, an auxiliary connecting plate, an annular guide rail, an annular sealing sleeve and a limiting handle mechanism. An air outlet welding groove is formed in the annular sealing sleeve; the argon outlet gap is used for discharging argon, the two ends of the auxiliary connecting plate are welded and fixed to the outer side walls of the upper tank body and the lower tank body to serve as mounting supports, the peripheral face of the tank body is sleeved with the annular guide rail, the annular guide rail is in sliding fit with the annular sealing sleeve, and the annular sealing sleeve achieves directional discharging of argon through the gas outlet welding groove and blocks an unwelded area. The limiting handle mechanism is used for controlling locking and unlocking of the annular sealing sleeve, the annular sealing sleeve can slide step by step along the annular guide rail in the welding process, exhaust is started only at the welding position, and therefore argon concentrated protection is achieved, air permeation is avoided, the welding seam protection effect and the welding quality are improved, argon waste is reduced, and the welding quality is improved. And meanwhile, the operation convenience and safety are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pressure container manufacturing, in particular to a tank body welding auxiliary device. BACKGROUND

[0002] During the welding process of a pressure container or a tank body, the welding position usually needs to be protected from the influence of oxygen, nitrogen and other components in the external air, otherwise an oxide layer is easily formed at the welding position, which leads to the decrease of the welding strength, the brittleness of the metal organization and the influence on the overall sealing performance and service life; the existing process is to firstly position and butt joint the upper and lower parts of the tank body through a support frame, and then preliminarily fix the tank body through spot welding, and then formally weld the welding seam; meanwhile, argon is introduced into the tank body before welding, and when the tank body is filled with argon, the argon is discharged through the welding seam opening to protect the welding position; however, for the circumferential butt joint welding seam, due to the large opening range, the argon discharge position is dispersed, it is difficult to concentrate on the actual welding position, and the external air is easily infiltrated, thereby weakening the welding protection effect and causing a large amount of argon waste. SUMMARY

[0003] In order to improve the defects that the circumferential butt joint welding seam has a large opening range, the argon discharge is dispersed, the protection effect is not concentrated, the air is easily infiltrated and the argon is wasted during the welding manufacturing process of the pressure container or the tank body, the application provides a tank body welding auxiliary device.

[0004] The tank body welding auxiliary device provided by the application adopts the following technical scheme: A tank body welding auxiliary device, comprising an upper tank body, a lower tank body located below the upper tank body and arranged in alignment with the upper tank body, and an argon gas inlet pipe connected with the upper tank body, an argon gas outlet gap is arranged between the lower side of the upper tank body and the upper side of the lower tank body, further comprising an auxiliary connecting plate fixedly connected with the outer side wall of the upper tank body and the outer side wall of the lower tank body respectively, a ring-shaped guide rail sleeved on the outer sides of the upper tank body and the lower tank body and connected with the auxiliary connecting plate, a ring-shaped sealing sleeve in sliding connection with the ring-shaped guide rail, and a limiting handle mechanism connected with the ring-shaped sealing sleeve and in plug-in cooperation with the ring-shaped guide rail, the ring-shaped guide rail is used for guiding the ring-shaped sealing sleeve to rotate and slide along the circumferences of the upper tank body and the lower tank body. The ring-shaped sealing sleeve is arranged around the outer side walls of the upper tank body and the lower tank body to block the argon gas outlet gap, and the ring-shaped sealing sleeve is provided with an outlet welding groove in communication with the argon gas outlet gap.

[0005] By adopting the technical scheme, the argon gas outlet gap is used for argon gas discharge to realize weld protection, the auxiliary connecting plates are welded and fixed at both ends of the upper tank body and the lower tank body as installation supports, the annular guide rail is sleeved on the outer circumferential surface of the tank body and is in sliding fit with the annular sealing sleeve, the annular sealing sleeve realizes directional argon gas discharge through the gas welding groove and blocks the unwelded area, the limiting handle mechanism is used for locking and unlocking control of the annular sealing sleeve, the annular sealing sleeve can slide along the annular guide rail gradually in the welding process, and the exhaust is only opened at the welding position, so that concentrated argon gas protection is realized, air infiltration is avoided, the weld protection effect and the welding quality are improved, argon gas waste is reduced, and operation convenience and safety are improved.

[0006] Preferably, the auxiliary connecting plate comprises a connecting plate body, a first welding side plate connected with the upper end of the connecting plate body and welded with the outer side wall of the upper tank body, and a second welding side plate connected with the lower end of the connecting plate body and welded with the outer side wall of the lower tank body; the connecting plate body, the first welding side plate and the second welding side plate are arranged to form a slide rail avoidance groove aligned with the argon gas outlet gap.

[0007] By adopting the technical scheme, the slide rail avoidance groove is used for installing and positioning the annular guide rail, so that the annular guide rail is coaxially matched with the argon gas outlet gap, thereby providing a stable and smooth sliding track for the annular sealing sleeve. The application not only realizes reliable support and accurate positioning of the guide rail, but also effectively avoids interference between the guide rail and the weld, ensures the stability of the sealing and sliding process, and improves the installation adaptability and welding protection reliability of the whole device.

[0008] Preferably, the annular guide rail comprises a first guide rail inserted into the slide rail avoidance groove and tightly attached to the first welding side plate, a first connecting bolt inserted into the first welding side plate and threadedly connected with the upper side of the first guide rail, a second guide rail inserted into the slide rail avoidance groove and tightly attached to the second welding side plate, and a second connecting bolt inserted into the second welding side plate and threadedly connected with the lower side of the second guide rail; the first guide rail is sleeved on the outer side wall of the upper tank body, and the second guide rail is sleeved on the outer side wall of the lower tank body.

[0009] By adopting the technical scheme, the first guide rail is attached to the outer side wall of the upper tank body and is locked in the slide rail avoidance groove through the first connecting bolt, and the second guide rail is attached to the outer side wall of the lower tank body and is fixed in the slide rail avoidance groove through the second connecting bolt, thereby forming a stable annular guide structure and providing a continuous and smooth circumferential sliding track for the annular sealing sleeve. The application not only improves the installation strength and positioning accuracy, but also ensures stable movement of the annular sealing sleeve during welding, realizes precise protection of local argon gas discharge, and improves the welding quality and gas utilization efficiency.

[0010] Preferably, the first guide rail is provided with a first guide groove opening downward, and the second guide rail is provided with a second guide groove opening upward. The annular sealing sleeve comprises a sealing sleeve body, a first guide protrusion connected with the upper side of the sealing sleeve body and inserted into the first guide groove, and a second guide protrusion connected with the lower side of the sealing sleeve body and inserted into the second guide groove; the inner side wall of the sealing sleeve body is tightly arranged with the outer side wall of the upper tank body and the lower tank body respectively to block the argon gas outlet gap.

[0011] By adopting the above technical scheme, the first guide protrusion is inserted into the first guide groove, and the second guide protrusion is inserted into the second guide groove, forming an upper and lower limiting guide structure, so that the sealing sleeve body can stably slide along the circumference of the tank between the guide rails, and the inner side wall of the sealing sleeve body is tightly arranged with the outer side wall of the upper tank body and the lower tank body to block the argon gas outlet gap. When the operation is unlocked by the limiting mobile phone structure, the sealing sleeve body can smoothly slide, and the gas welding groove is only connected at the target weld position, so as to realize the concentrated discharge and protection of argon gas, avoid gas dispersion and air infiltration, improve the welding protection effect and welding quality, reduce the consumption of argon gas, and improve the sealing reliability and operation convenience.

[0012] Preferably, the annular sealing sleeve further comprises a first sliding roller rotatably connected with the first guide protrusion and located between the first guide protrusion and the first guide rail, and a second sliding roller rotatably connected with the second guide protrusion and located between the second guide protrusion and the second guide rail.

[0013] By adopting the above technical scheme, the sliding friction is replaced by the rolling friction of the first sliding roller and the second sliding roller, the sliding resistance of the sealing sleeve body on the annular guide rail is reduced, and the wear and jam during long-distance movement are avoided; low-resistance, precise and controllable protection gas supply is realized, the welding protection effect and the weld quality are improved, and the operation smoothness and device durability are improved.

[0014] Preferably, the first sealing tape is arranged between the upper side wall of the first guide rail and the outer side wall of the upper tank body, and the second sealing tape is arranged between the lower side wall of the second guide rail and the outer side wall of the lower tank body.

[0015] By adopting the above technical scheme, the first sealing tape and the second sealing tape can prevent argon gas from leaking from the combined part of the guide rail and the tank during welding, ensure the gas shielding effect, make the argon gas concentrate and discharge through the gas outlet welding groove, realize stable protection of the weld, thereby improve the welding quality, reduce the waste of argon gas, enhance the overall air tightness and sealing reliability, and prolong the service life of the device.

[0016] Preferably, the sealing sleeve body is provided with a limiting insertion slot on the outer side wall; the limiting handle assembly comprises an unlocking knob handle movably inserted into the limiting insertion slot, and an insertion locking assembly hinged to the sealing sleeve body and used to limit the relative movement between the sealing sleeve body and the first guide slide rail.

[0017] By adopting the above technical scheme, the limiting insertion slot is used to accommodate the limiting handle assembly, and the end of the insertion locking assembly can be inserted into the first guide slide rail to limit the relative movement between the sealing sleeve body and the first guide slide rail. The present application realizes the locking and unlocking of the sealing sleeve body and the first guide slide rail through the insertion locking assembly, which is simple to operate and accurate in limiting, can ensure the sliding safety and position stability of the annular sealing sleeve, makes the argon protection more concentrated and reliable, thereby improving the welding quality and the convenience of the device.

[0018] Preferably, the first guide slide rail is provided with a rotating limiting slot arranged in an array along the circumference of the first guide slide rail on the outer side wall, the unlocking knob handle is provided with an unlocking knob slot on the upper side, and the unlocking knob handle is further provided with a reset top pressing protruding edge movably inserted into the limiting insertion slot, and the unlocking knob handle is hinged to the sealing sleeve body at the position of the included angle away from the end of the insertion locking assembly. The insertion locking assembly comprises a turnover locking plate hinged to the sealing sleeve body and movably inserted into the unlocking knob slot at one end, a rotating limiting protruding edge connected to the other end of the turnover locking plate and used to be inserted into the rotating limiting slot, an unlocking knob protruding edge provided on the unlocking knob handle and located in the unlocking knob slot, a locking knob protruding boss oppositely arranged with the unlocking knob protruding edge, and an elastic reset component movably inserted into the limiting insertion slot and located between the reset top pressing protruding edge and the sealing sleeve body.

[0019] By adopting the above technical scheme, the turnover locking plate and the rotating limiting protruding edge cooperate with the unlocking knob protruding edge and the locking knob protruding boss to realize the turnover locking; the elastic reset component is used to automatically reset and restore the locking after the unlocking knob handle is loosened, and only needs to push the unlocking knob handle to make the rotating limiting protruding edge exit the rotating limiting slot during operation, so as to release the annular sealing sleeve to realize the sliding adjustment, and after the hand is loosened, the elastic reset component is automatically reset to re-lock. The present application realizes the accurate locking and quick unlocking of the annular sealing sleeve in the circumferential direction, which is simple to operate and reliable in resetting, not only improves the flexibility and precision of the argon protection window control, but also enhances the safety and overall stability of the welding process.

[0020] Preferably, the sealing sleeve body is provided with a top pressing protruding edge limiting boss movably inserted into the limiting insertion slot, and the top pressing protruding edge limiting boss is used to top pressing cooperate with the other side of the reset top pressing protruding edge opposite to the elastic reset component.

[0021] By adopting the technical scheme, the top-pressing protruding edge limiting boss is matched with the reset top-pressing protruding edge to form a limiting and supporting structure, the reset top-pressing protruding edge is separated from the boss to realize unlocking when the operator pushes the unlocking knob, and the reset top-pressing protruding edge is automatically rebounded and reattached under the action of the elastic reset component after being released, so that the quick reset and locking are completed, the accuracy of the unlocking action and the reliability of the reset are ensured, the annular sealing sleeve is kept accurate sliding and locking during the welding process, and the operation stability is improved.

[0022] Preferably, the sealing sleeve body is further provided with a first turnover avoiding inclined side wall located in the limiting plug-in slot, and the top-pressing protruding edge limiting boss is provided with a second turnover avoiding inclined side wall arranged in the direction of the unlocking knob.

[0023] By adopting the technical scheme, the first turnover avoiding inclined side wall and the second turnover avoiding inclined side wall oppositely form an inclined guiding surface, the unlocking knob is provided with an avoiding path when the operator turns the unlocking knob, the jamming interference is avoided, the unlocking, turning and resetting process is smooth and stable, the reliability and repeatability of the locking and releasing control are improved, and the annular sealing sleeve is kept stable operation and the welding quality is improved in the welding protection.

[0024] In summary, the present application has the following at least one beneficial technical effect: 1. The argon gas outlet gap is used for argon gas discharge to realize weld protection, the auxiliary connecting plate is welded and fixed at the outer sidewalls of the upper tank body and the lower tank body as a mounting bracket, the annular guide rail is sleeved on the outer circumferential surface of the tank body and is in sliding cooperation with the annular sealing sleeve, the annular sealing sleeve realizes directional discharge of argon gas and blocks the non-welded area through the gas welding groove, the limiting knob structure is used for locking and unlocking control of the annular sealing sleeve, the annular sealing sleeve can slide along the annular guide rail during the welding process, and only the welding position is opened to discharge the gas, so that the argon gas concentrated protection is realized, air infiltration is avoided, the weld protection effect and the welding quality are improved, argon gas waste is reduced, and the operation convenience and safety are improved; 2. The turnover locking plate and the rotating limiting protruding edge cooperate with the unlocking protruding edge and the locking protruding boss to realize turnover locking, and the elastic reset component is used for automatic reset and recovery of locking after the unlocking knob is loosened, so that the rotating limiting protruding edge can be withdrawn from the rotating limiting slot by only pushing the unlocking knob during operation, the annular sealing sleeve is released to realize sliding adjustment, and the annular sealing sleeve is automatically reset and locked after the hand is loosened. The present application realizes accurate locking and quick unlocking of the annular sealing sleeve in the circumferential direction, is simple and convenient to operate, and is reliable in reset. The flexibility and precision of the argon protection window control are improved, and the safety and overall stability of the welding process are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a three-dimensional structure schematic diagram of an embodiment of the present application.

[0026] Figure 2 is a sectional structure schematic diagram of the embodiment of the application.

[0027] Figure 3 is Figure 2 is an enlarged view of part A in the figure.

[0028] Reference signs: 1, upper tank body; 2, lower tank body; 3, argon gas inlet pipe; 4, argon gas outlet gap; 5, auxiliary connecting plate; 51, connecting plate body; 52, first welding side plate; 53, second welding side plate; 54, slide rail avoidance groove; 6, annular guide rail; 61, first guide slide rail; 62, first connecting bolt; 63, second guide slide rail; 64, second connecting bolt; 611, first guide groove; 612, rotation limiting groove; 631, second guide groove; 7, annular sealing sleeve; 70, outlet welding groove; 71, sealing sleeve body; 72, first guide convex edge; 73, second guide convex edge; 74, first sliding roller; 75, second sliding roller; 711, limiting plug-in groove; 712, top pressing convex edge limiting boss; 713, first turnover avoidance inclined side wall; 714, second turnover avoidance inclined side wall; 8, limiting handle structure; 81, unlocking dial handle; 82, plug-in locking assembly; 811, unlocking dial groove; 812, reset top pressing convex edge; 821, turnover locking plate; 822, rotation limiting convex edge; 823, unlocking dial convex edge; 824, locking dial boss; 825, elastic reset component; 9, first sealing tape; 10, second sealing tape. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figures 1 to 3 The application will be further described in detail.

[0030] The embodiment of the application discloses a tank body welding auxiliary device. Figure 1 and Figure 2 A tank body welding auxiliary device, comprising an upper tank body 1, a lower tank body 2 arranged below the upper tank body 1 and aligned with the upper tank body 1, and an argon gas inlet pipe 3 connected with the upper tank body 1, wherein an argon gas outlet gap 4 is arranged between the lower side of the upper tank body 1 and the upper side of the lower tank body 2, further comprising an auxiliary connecting plate 5 fixedly connected with the outer side wall of the upper tank body 1 and the outer side wall of the lower tank body 2 respectively, an annular guide rail 6 connected with the auxiliary connecting plate 5 and sleeved on the outer side of the upper tank body 1 and the lower tank body 2, an annular sealing sleeve 7 in sliding connection with the annular guide rail 6, and a limiting handle structure 8 connected with the annular sealing sleeve 7 and in plug-in cooperation with the annular guide rail 6, wherein the annular guide rail 6 is used for guiding the annular sealing sleeve 7 to rotate and slide along the circumference of the upper tank body 1 and the lower tank body 2; The annular sealing sleeve 7 is arranged around the outer sidewall of the upper tank body 1 and the lower tank body 2 for blocking the argon gas outlet gap 4, and the annular sealing sleeve 7 is provided with an outlet welding groove 70 in communication with the argon gas outlet gap 4.

[0031] The argon gas outlet gap 4 of the present application is used for argon gas discharge to realize weld protection, and the two ends of the auxiliary connecting plate 5 are respectively welded and fixed to the outer sidewall of the upper tank body 1 and the lower tank body 2 for serving as a mounting bracket; the annular guide rail 6 is arranged inside the auxiliary connecting plate 5 and is sleeved on the outer circumferential surface of the upper tank body 1 and the lower tank body 2 for providing a guide structure for the circumferential sliding of the annular sealing sleeve 7, the annular sealing sleeve 7 is slidingly connected to the annular guide rail 6 for blocking the argon gas outlet gap 4, and the outlet welding groove 70 is used for directional discharge of argon gas during welding; the limiting handle mechanism 8 is used for locking and limiting between the annular sealing sleeve 7 and the annular guide rail 6 to prevent accidental movement of the annular sealing sleeve 7 in a non-welding state; the annular sealing sleeve 7 can gradually slide along the circumference of the upper tank body 1 and the lower tank body 2 under the guidance of the annular guide rail 6, and the operator can control and release the position of the annular sealing sleeve 7 by unlocking and resetting the limiting handle mechanism 8 according to the welding process, so that the outlet welding groove 70 is only opened at the target welding position, thereby realizing local argon gas discharge and protection, and other non-welding positions are still blocked and sealed by the sealing sleeve to avoid air entering, ensuring that the protective gas is concentrated on the current welding position, effectively improving the gas protection efficiency and welding quality of the weld, reducing argon gas waste, and improving the operation efficiency and safety.

[0032] The present application also discloses a high-pressure argon gas cylinder (not shown in the figure) for introducing argon gas into the tank body through the argon gas inlet pipe 3, cooperating with a pressure reducing valve and a flow meter as pressure and flow control components, and communicating with the argon gas inlet pipe 3 through a hose and a joint to realize stable and controllable introduction of argon gas.

[0033] Further, as Figure 2As shown, the auxiliary connecting plate 5 of the present application comprises a connecting plate body 51, a first welding side plate 52, and a second welding side plate 53. The connecting plate body 51 is vertically arranged, the upper end of the connecting plate body 51 is fixedly connected with the first welding side plate 52, the other end of the first welding side plate 52 is weldedly connected with the outer side wall of the upper tank body 1, the lower end of the connecting plate body 51 is connected with the second welding side plate 53, and the other end of the second welding side plate 53 is weldedly connected with the outer side wall of the lower tank body 2, thereby forming an integrated rigid support structure. The connecting plate body 51, the first welding side plate 52, and the second welding side plate 53 together form a slide rail avoidance groove 54 for mounting the annular guide rail 6. The slide rail avoidance groove 54 is aligned with the argon gas outlet gap 4, ensuring that the annular guide rail 6 is inserted and aligned with the area of the argon gas outlet gap 4, achieving coaxial installation and sealed guidance. The auxiliary connecting plate 5 is connected with the annular guide rail 6 to form a continuous annular guide rail base, providing a stable sliding track for the annular sealing sleeve 7. The auxiliary connecting plate 5 bridges the annular guide rail 6 and the tank body through the upper and lower double side plate structure, not only serving as a structural support and guide rail positioning, but also providing a reserved space for the argon gas passage area, effectively avoiding structural interference between the guide rail and the weld, ensuring the smoothness and stability of the subsequent sealing, sliding, and welding process, and further improving the installation adaptability and structural reliability of the entire device.

[0034] Further, as shown in Figure 2 and Figure 3 , the annular guide rail 6 of the present application comprises a first guide slide rail 61, a second guide slide rail 63, a first connecting bolt 62, and a second connecting bolt 64. The first guide slide rail 61 is inserted into the slide rail avoidance groove 54 and tightly attached to the inner side of the first welding side plate 52, and is sleeved on the outer side wall of the upper tank body 1, achieving guided coverage of the outer circumference of the upper tank body 1. The second guide slide rail 63 is inserted into the slide rail avoidance groove 54 and tightly attached to the second welding side plate 53, and is sleeved on the outer side wall of the lower tank body 2, achieving guided attachment of the lower tank body 2. The first connecting bolt 62 is inserted from the outer side of the first welding side plate 52 and threadedly inserted into the upper side of the first guide slide rail 61, used to stably lock the first guide slide rail 61 in the slide rail avoidance groove 54. The second connecting bolt 64 is inserted from the outer side of the second welding side plate 53 and threadedly inserted into the lower side of the second guide slide rail 63, used to stably lock the second guide slide rail 63. The present application can provide a continuous, smooth, and stable circumferential sliding path for the annular sealing sleeve 7, effectively avoiding interference space between the guide rail and the weld. Through coordinated cooperation with the auxiliary connecting plate 5, it can also improve the structural strength and positioning accuracy of the overall installation, ensuring that the annular sealing sleeve 7 moves stably along the weld position during the actual welding process, achieving the accuracy of local argon exhaust.

[0035] Specifically, as shown in Figure 3As shown, the lower side of the first guide sliding rail 61 is provided with a first guide groove 611 extending in the circumferential direction and opening downward, the upper side of the second guide sliding rail 63 is provided with a second guide groove 631 extending in the circumferential direction and opening upward, the annular sealing sleeve 7 comprises a sealing sleeve body 71, a first guide protruding edge 72 and a second guide protruding edge 73, the first guide protruding edge 72 is arranged on the upper side of the sealing sleeve body 71 and is inserted into the first guide groove 611, the second guide protruding edge 73 is arranged on the lower side of the sealing sleeve body 71 and is inserted into the second guide groove 631, forming an upper and lower limiting guide cooperation structure, so that the sealing sleeve body 71 can stably slide along the circumferential direction of the tank body between the first guide sliding rail 61 and the second guide sliding rail 63; the inner side wall of the sealing sleeve body 71 is arranged in close contact with the outer side wall of the upper tank body 1 and the lower tank body 2 respectively, so as to always keep the reliable sealing of the argon gas outlet gap 4 during sliding; in actual use, the operator locks or releases the annular sealing sleeve 7 through the limiting knob mechanism 8, when unlocked, the sealing sleeve body 71 slides along the circumferential direction of the tank body by turning the limiting knob mechanism 8, and the dynamic shielding of the argon gas outlet gap 4 is realized by the close fit between the sealing sleeve body 71 and the outer wall of the tank body, only the outlet welding groove 70 arranged on the sealing sleeve body 71 controls the argon gas discharge position, so that the argon gas can be concentrated on the target weld area during the welding operation, avoiding the dispersion and leakage of the shielding gas, ensuring the shielding effect of the argon gas, improving the welding quality, at the same time, reducing the argon gas consumption and improving the overall operation convenience and sealing reliability.

[0036] The first guide groove 611 and the second guide groove 631 are preferably groove bodies with a "T" shaped structure in cross section, and the first guide protruding edge 72 and the second guide protruding edge 73 are preferably "T" shaped structures corresponding to the "T" shaped structure groove body.

[0037] More specifically, as Figure 3As shown, the annular sealing sleeve 7 of the present application also comprises a first sliding roller 74 and a second sliding roller 75 for further reducing the sliding resistance of the annular sealing sleeve 7 on the annular guide rail 6, the first sliding roller 74 is rotatably connected with the first guide protrusion 72 and is arranged between the first guide protrusion 72 and the first guide rail 61, and the second sliding roller 75 is rotatably connected with the second guide protrusion 73 and is arranged between the second guide protrusion 73 and the second guide rail 63. The introduction of the roller assembly enables the sealing sleeve body 71 to replace sliding friction with rolling friction during circumferential movement, thereby reducing the movement resistance and the problems of wear and jam caused by long-distance sliding. After the limiting handle mechanism 8 is unlocked, the annular sealing sleeve 7 is guided by the cooperation of the first guide rail 61 and the second guide rail 63, and is supported by the rolling of the first sliding roller 74 and the second sliding roller 75, thereby realizing stable circumferential sliding along the outer sidewalls of the upper tank body 1 and the lower tank body 2. The sealing sleeve body 71 always maintains adhesion to the argon gas outlet gap 4, and only controls the local exhaust path of argon gas through the gas outlet welding groove 70, thereby providing dynamic, continuous and low-resistance gas protection adjustment function in the welding operation, improving the overall operation smoothness, control accuracy and service life, and improving the welding quality and gas use efficiency.

[0038] More specifically, as Figure 3 shown, the present application also comprises a first sealing tape 9 and a second sealing tape 10, the first sealing tape 9 is attached between the upper sidewall of the first guide rail 61 and the outer sidewall of the upper tank body 1, and the second sealing tape 10 is attached between the lower sidewall of the second guide rail 63 and the outer sidewall of the lower tank body 2, respectively filling and sealing the annular gap space between the first guide rail 61 and the upper tank body 1, and the second guide rail 63 and the lower tank body 2, forming a continuous and stable auxiliary sealing interface; in the subsequent welding operation, argon gas is injected into the tank body through the argon gas inlet pipe 3 and is discharged through the gas outlet welding groove 70 to protect the weld, the arrangement of the sealing tape can further ensure the sealing continuity between the guide rail structure and the tank body, prevent argon gas from leaking at the combined part of the guide rail and the tank body, improve the gas shielding effect, reduce the risk of argon gas loss, enhance the overall air tightness, prolong the service life of the interface components of the guide rail and the tank body, and ensure the protection stability and safety during the welding operation.

[0039] The first sealing tape 9 and the second sealing tape 10 are preferably masking paper.

[0040] In addition, as Figure 2 and Figure 3As shown, the outer side wall of the sealing sleeve body 71 is provided with a limiting plug-in slot 711 for accommodating and positioning the limiting handle assembly 8, which includes an unlocking pull handle 81 and a plug-in locking assembly 82. The unlocking pull handle 81 is movably inserted into the limiting plug-in slot 711, and the plug-in locking assembly 82 is hingedly connected to the sealing sleeve body 71 at one end and is used to be plug-in locked at the matching position of the first guide rail 61 at the other end, so as to limit the relative movement between the sealing sleeve body 71 and the first guide rail 61. The limiting plug-in slot 711 provides structural guidance and installation positioning, the unlocking pull handle 81 realizes one-hand operation, and the plug-in locking assembly 82 realizes precise limiting. The overall structure is compact and convenient to operate, which can improve the safety and precision of the sliding control of the sealing sleeve body 71, enhance the position maintaining ability during welding, and ensure the continuity of local argon protection and welding quality.

[0041] As shown, the outer side wall of the sealing sleeve body 71 is provided with a limiting plug-in slot 711 for accommodating and positioning the limiting handle assembly 8, which includes an unlocking pull handle 81 and a plug-in locking assembly 82. The unlocking pull handle 81 is movably inserted into the limiting plug-in slot 711, and the plug-in locking assembly 82 is hingedly connected to the sealing sleeve body 71 at one end and is used to be plug-in locked at the matching position of the first guide rail 61 at the other end, so as to limit the relative movement between the sealing sleeve body 71 and the first guide rail 61. The limiting plug-in slot 711 provides structural guidance and installation positioning, the unlocking pull handle 81 realizes one-hand operation, and the plug-in locking assembly 82 realizes precise limiting. The overall structure is compact and convenient to operate, which can improve the safety and precision of the sliding control of the sealing sleeve body 71, enhance the position maintaining ability during welding, and ensure the continuity of local argon protection and welding quality. Figures 1 to 3 As shown, the outer side wall of the sealing sleeve body 71 is provided with a limiting plug-in slot 711 for accommodating and positioning the limiting handle assembly 8, which includes an unlocking pull handle 81 and a plug-in locking assembly 82. The unlocking pull handle 81 is movably inserted into the limiting plug-in slot 711, and the plug-in locking assembly 82 is hingedly connected to the sealing sleeve body 71 at one end and is used to be plug-in locked at the matching position of the first guide rail 61 at the other end, so as to limit the relative movement between the sealing sleeve body 71 and the first guide rail 61. The limiting plug-in slot 711 provides structural guidance and installation positioning, the unlocking pull handle 81 realizes one-hand operation, and the plug-in locking assembly 82 realizes precise limiting. The overall structure is compact and convenient to operate, which can improve the safety and precision of the sliding control of the sealing sleeve body 71, enhance the position maintaining ability during welding, and ensure the continuity of local argon protection and welding quality. The unlocking push groove 811 is provided with an unlocking push ridge 823 matched with the turnover locking plate 821, and a locking push boss 824 is arranged opposite to the unlocking push ridge 823 and located on both sides of the turnover locking plate 821, and the unlocking push ridge 823 and the locking push boss 824 jointly limit the turnover angle and movement path of the turnover locking plate 821; the elastic reset component 825 is inserted into the limiting insertion groove 711 and located between the reset top pressing ridge 812 and the sealing sleeve body 71, and is used for exerting a rebound force on the unlocking push handle 81 after the unlocking push handle 81 is released, so that the unlocking push handle 81 and the insertion locking assembly 82 are automatically reset to the locking position; in the actual operation process, the operator pushes the unlocking push handle 81 in the direction of inserting into the limiting insertion groove 711 to rotate and turn over the upper part of the unlocking push handle 81 around the hinge point, drives the turnover locking plate 821 to turn over under the top pressing guidance of the unlocking push ridge 823, turns over and exits the rotating limiting groove 612, realizes the unlocking and release of the sealing sleeve body 71, and adjusts the position of the sealing sleeve body 71 along the guide rail by circumferentially pushing the unlocking push handle 81; after the unlocking push handle 81 is loosened, the reset top pressing ridge 812 and the unlocking push handle 81 are turned over and automatically reset in the direction away from the sealing sleeve body 71 under the action of the elastic reset component 825, the locking push boss 824 top-pressing guides the turnover locking plate 821 to turn over, and the rotating limiting ridge 822 is reinserted into the nearest rotating limiting groove 612, so that the locking state is restored, and the present application is combined with the push and turnover control through multi-point limiting cooperation, not only realizes the precise locking and quick release of the annular sealing sleeve 7 at any angle, but also is simple and convenient to operate, compact in structure, and can be automatically reset, and the flexibility, safety and positioning accuracy of the welding auxiliary device in the position control of the welding window in the argon protection process are improved.

[0042] The elastic reset component 825 is preferably a spring.

[0043] Further, as Figure 3As shown, the sealing sleeve body 71 of the present application is provided with a top pressing protruding limit boss 712 inserted into the limit insertion slot 711, and the top pressing protruding limit boss 712 cooperates with the reset top pressing protrusion 812 provided on the unlocking toggle handle 81; the positioning surface of the top pressing protruding limit boss 712 and the other side surface of the reset top pressing protrusion 812 opposite to the elastic reset component 825 are tightly top pressed to form a limit and elastic support structure; when the operator pushes the unlocking toggle handle 81 inward to unlock, the reset top pressing protrusion 812 moves away from the top pressing protruding limit boss 712, and drives the turnover locking plate 821 to be separated from the locking state, so that the limit is released; and when the unlocking toggle handle 81 is released, the elastic reset component 825 releases the elastic force after being compressed to store energy, pushes the reset top pressing protrusion 812 to rebound along the original path, so that the reset top pressing protrusion 812 is recombined on the top pressing protruding limit boss 712, and the automatic reset and repositioning of the unlocking toggle handle 81 are completed. The present application realizes the stable movement path control of the unlocking assembly in the limit insertion slot 711 through top pressing control, which can not only ensure the accurate opening of the toggle handle in the unlocking state, but also realize the fast and accurate automatic reset and locking recovery in the hand release state, thereby improving the response speed, reliability and service life of the whole limit control structure, ensuring the accurate sliding control and locking precision of the annular sealing sleeve 7 in the welding process, and further enhancing the operation stability and welding protection effect of the device.

[0044] Further, as shown in the drawings, Figure 3 As shown, the sealing sleeve body 71 of the present application is provided with a first turnover avoidance inclined side wall 713 located in the limit insertion slot 711, and the top pressing protruding limit boss 712 is further provided with a second turnover avoidance inclined side wall 714 arranged in the direction facing the unlocking toggle handle 81, and the first turnover avoidance inclined side wall 713 and the second turnover avoidance inclined side wall 714 are oppositely arranged and respectively form inclined guide avoidance surfaces; when the operator applies force to the unlocking toggle handle 81 to make the unlocking toggle handle 81 turn inward around the hinge point, the upper side wall of the unlocking toggle handle 81 moves in the direction close to the second turnover avoidance inclined side wall 714, and the inner side wall of the unlocking toggle handle 81 moves in the direction close to the first turnover avoidance inclined side wall 713, so as to provide an inclined avoidance path for the turnover of the unlocking toggle handle 81; the present application provides a turnover avoidance path for the turnover movement of the unlocking toggle handle 81 through the first turnover avoidance inclined side wall 713 and the second turnover avoidance inclined side wall 714, improves the smoothness of the whole process of turnover, unlocking and reset, and ensures that the annular sealing sleeve 7 can realize stable, smooth and repeatable locking and release control in the welding protection process.

[0045] The implementation principle of the tank welding auxiliary device in the embodiment of the present application is as follows: The argon gas outlet gap 4 is used for argon gas discharge to realize weld protection, and the two ends of the auxiliary connecting plate 5 are respectively welded and fixed to the outer side walls of the upper tank body 1 and the lower tank body 2 for serving as mounting supports; the annular guide rail 6 is arranged on the inner side of the auxiliary connecting plate 5 and is sleeved on the outer circumferential surfaces of the upper tank body 1 and the lower tank body 2, and is used for providing a guide structure for the circumferential sliding of the annular sealing sleeve 7; the annular sealing sleeve 7 is slidably connected to the annular guide rail 6, and is used for blocking the argon gas outlet gap 4; the outlet welding groove 70 is used for directional discharge of argon gas during welding; the limiting handle mechanism 8 is used for locking and limiting between the annular sealing sleeve 7 and the annular guide rail 6, and prevents the annular sealing sleeve 7 from accidentally moving in a non-welding state; under the guidance of the annular guide rail 6, the annular sealing sleeve 7 can gradually slide along the circumferences of the upper tank body 1 and the lower tank body 2, and an operator can control and release the position of the annular sealing sleeve 7 by unlocking and resetting the limiting handle mechanism 8 according to the welding process, so that the outlet welding groove 70 is only opened at the target welding position, thereby realizing local argon gas discharge and protection, and other non-welding positions are still blocked and sealed by the sealing sleeve to avoid air entering, so as to ensure that the protective gas is concentrated on the current welding position, effectively improve the gas protection efficiency and welding quality of the weld, reduce argon gas waste, and improve the operation efficiency and safety. In actual operation, the operator pushes the unlocking toggle handle 81 in the direction of inserting into the limiting insertion groove 711 to rotate and flip the upper part of the unlocking toggle handle 81 about the hinge point, drives the flip locking plate 821 to flip under the top pressure and guidance of the unlocking toggle protrusion 823, rotates and exits the rotation limiting protrusion 822 from the rotation limiting groove 612, realizes the unlocking and release of the sealing sleeve body 71, and drives the sealing sleeve body 71 to slide along the guide rail by circumferentially toggling the unlocking toggle handle 81 to adjust the position; after the unlocking toggle handle 81 is released, the top pressure protrusion 812 and the unlocking toggle handle 81 flip and automatically reset in the direction away from the sealing sleeve body 71 under the action of the elastic reset component 825, the locking toggle boss 824 top pressure guides the flip locking plate 821 to flip, and the rotation limiting protrusion 822 reinserts into the nearest rotation limiting groove 612, so as to restore the locking state, and the present application combines the multi-point limiting cooperation with the toggle flip control, not only realizes the accurate locking and quick release of the annular sealing sleeve 7 at any angle, but also is simple and convenient to operate, compact in structure, and can be automatically reset, thereby improving the flexibility, safety and positioning accuracy of the welding auxiliary device in the position control of the welding window during the argon protection process.

[0046] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A can body welding auxiliary device comprising an upper can body (1), a lower can body (2) disposed below and aligned with the upper can body (1), and an argon gas inlet pipe (3) connected with the upper can body (1), an argon gas outlet gap (4) being provided between the lower side of the upper can body (1) and the upper side of the lower can body (2), characterized in that, Also included are auxiliary connecting plates (5) fixedly connected with the outer side walls of the upper tank body (1) and the lower tank body (2) respectively, a ring-shaped guide rail (6) connected with the auxiliary connecting plates (5) and sleeved on the outer sides of the upper tank body (1) and the lower tank body (2), a ring-shaped sealing sleeve (7) in sliding connection with the ring-shaped guide rail (6), and a limiting handle mechanism (8) connected with the ring-shaped sealing sleeve (7) and in plug-in cooperation with the ring-shaped guide rail (6), the ring-shaped guide rail (6) being used to guide the ring-shaped sealing sleeve (7) to rotate and slide along the circumferences of the upper tank body (1) and the lower tank body (2); The ring-shaped sealing sleeve (7) is arranged around the outer side walls of the upper tank body (1) and the lower tank body (2) and is used to block the argon gas outlet gap (4), and the ring-shaped sealing sleeve (7) is provided with an outlet welding groove (70) in communication with the argon gas outlet gap (4).

2. A tank welding aid as defined in claim 1, wherein, The auxiliary connecting plate (5) comprises a connecting plate body (51), a first welding side plate (52) connected with the upper end of the connecting plate body (51) and welded with the outer side wall of the upper tank body (1), and a second welding side plate (53) connected with the lower end of the connecting plate body (51) and welded with the outer side wall of the lower tank body (2); the connecting plate body (51), the first welding side plate (52) and the second welding side plate (53) are arranged to form a slide rail avoidance groove (54) aligned with the argon gas outlet gap (4).

3. A can body welding assist device according to claim 2, wherein The ring-shaped guide rail (6) comprises a first guide slide rail (61) inserted into the slide rail avoidance groove (54) and tightly attached to the first welding side plate (52), a first connecting bolt (62) inserted into the first welding side plate (52) and in threaded plug-in cooperation with the upper side of the first guide slide rail (61), a second guide slide rail (63) inserted into the slide rail avoidance groove (54) and tightly attached to the second welding side plate (53), and a second connecting bolt (64) inserted into the second welding side plate (53) and in threaded plug-in cooperation with the lower side of the second guide slide rail (63); the first guide slide rail (61) is sleeved on the outer side wall of the upper tank body (1), and the second guide slide rail (63) is sleeved on the outer side wall of the lower tank body (2).

4. A can body welding assist device according to claim 3, wherein The first guide slide rail (61) is provided with a first guide groove (611) opening downward, and the second guide slide rail (63) is provided with a second guide groove (631) opening upward. The ring-shaped sealing sleeve (7) comprises a sealing sleeve body (71), a first guide protruding edge (72) connected with the upper side of the sealing sleeve body (71) and inserted into the first guide groove (611), and a second guide protruding edge (73) connected with the lower side of the sealing sleeve body (71) and inserted into the second guide groove (631); the inner side walls of the sealing sleeve body (71) are tightly arranged in cooperation with the outer side walls of the upper tank body (1) and the lower tank body (2) respectively to block the argon gas outlet gap (4).

5. A can body welding assist device according to claim 4 wherein, The annular sealing sleeve (7) further comprises a first sliding roller (74) rotatably connected with the first guide protrusion (72) and located between the first guide protrusion (72) and the first guide sliding rail (61), and a second sliding roller (75) rotatably connected with the second guide protrusion (73) and located between the second guide protrusion (73) and the second guide sliding rail (63).

6. A tank welding aid as defined in claim 3 wherein, Further comprising a first sealing tape (9) attached between the upper sidewall of the first guide sliding rail (61) and the outer sidewall of the upper tank body (1), and a second sealing tape (10) attached between the lower sidewall of the second guide sliding rail (63) and the outer sidewall of the lower tank body (2).

7. A tank welding aid as defined in claim 4 wherein, The outer sidewall of the sealing sleeve body (71) is provided with a limiting insertion slot (711); the limiting handle mechanism (8) comprises an unlocking knob handle (81) movably inserted into the limiting insertion slot (711), and an insertion locking assembly (82) hinged with the sealing sleeve body (71) and used for limiting the relative movement between the sealing sleeve body (71) and the first guide sliding rail (61).

8. A can body welding assist device according to claim 7, wherein The outer sidewall of the first guide sliding rail (61) is provided with a rotation limiting slot (612) arranged in an array along the circumference of the first guide sliding rail (61), the upper side of the unlocking knob handle (81) is provided with an unlocking knob slot (811), the unlocking knob handle (81) is further provided with a reset top pressing protrusion (812) movably inserted into the limiting insertion slot (711), and the unlocking knob handle (81) is hinged with the sealing sleeve body (71) at the position of the included angle of the end away from the insertion locking assembly (82); The insertion locking assembly (82) comprises a turnover locking plate (821) hinged with the sealing sleeve body (71) and movably inserted into the unlocking knob slot (811) at one end, a rotation limiting protrusion (822) connected with the other end of the turnover locking plate (821) and used for being inserted into the rotation limiting slot (612), an unlocking knob protrusion (823) provided on the unlocking knob handle (81) and located in the unlocking knob slot (811), a locking knob protrusion (824) provided opposite to the unlocking knob protrusion (823), and an elastic reset component (825) movably inserted into the limiting insertion slot (711) and located between the reset top pressing protrusion (812) and the sealing sleeve body (71).

9. A can body welding assist device according to claim 8 wherein, The sealing sleeve body (71) is provided with a top pressing protrusion limiting boss (712) movably inserted into the limiting insertion slot (711), and the top pressing protrusion limiting boss (712) is used for top pressing cooperation with the other side of the reset top pressing protrusion (812) opposite to the elastic reset component (825).

10. A tank welding aid as defined in claim 9, wherein, The sealing sleeve body (71) is further provided with a first turnover avoiding inclined sidewall (713) located in the limiting insertion slot (711), and the top pressing protrusion limiting boss (712) is provided with a second turnover avoiding inclined sidewall (714) arranged in the direction facing the unlocking knob handle (81).

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