An aviation oxygen cylinder welding and processing device and processing technology

Abstract

The present invention relates to the technical field of welding equipment, and particularly relates to an aviation oxygen cylinder welding and processing device and a processing technology. In an aviation oxygen cylinder welding and processing device, it includes a bracket, a welding sleeve, a sealing ring and an extrusion member. First, the oxygen cylinder to be welded is supported on the bracket by a first support member, and at the same time, the welding sleeve is supported on the bracket by a second support member. Under the action of the sealing ring, the gap between the welding sleeve and the side wall of the oxygen cylinder can be blocked. When the air pump extracts the gas in the welding groove, the air pressure in the welding groove and the air pressure inside the oxygen cylinder decrease simultaneously. When the negative pressure state inside the welding sleeve or the oxygen cylinder changes, the gas flows through the gap between the oxygen cylinder and the welding sleeve. At this time, the extrusion member changes the extrusion force on the sealing ring, so that the sealing ring further blocks the gap between the oxygen cylinder and the welding sleeve, ensuring the degree of negative pressure in the welding groove and inside the oxygen cylinder, and thus improving the quality of laser welding the oxygen cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly to a welding processing device and processing technology for aviation oxygen cylinders. Background Art

[0002] In the field of aerospace, oxygen cylinders are key components to ensure flight safety and the normal operation of related systems. The quality of their welding has a crucial impact. Laser welding technology, with its many outstanding advantages, shows great value in the welding application of oxygen cylinders, being able to significantly improve the welding work efficiency and ensure that the welding quality reaches a high level. However, when using high-power laser welding, welding defects such as spatter, pores, shrinkage cavities, and surface collapse are likely to occur during the welding process. The appearance of these defects makes it difficult to reliably guarantee the stability of the weld formation. Currently, to overcome these defects, it is often necessary to create a negative pressure environment to carry out the welding work. Although the requirements for negative pressure in laser negative pressure welding are slightly lower than those in electron beam negative pressure welding, the construction of a negative pressure chamber is costly, greatly increasing the cost investment in the welding processing of aviation oxygen cylinders. Additionally, the working process of the negative pressure chamber is complex during actual use, involving many operation steps and parameter regulations, and to a certain extent, it will also have a negative impact on the welding quality, such as possibly affecting the laser energy transmission effect, etc., which is not conducive to ensuring the high-quality requirements of oxygen cylinder welding. Summary of the Invention

[0003] The present invention provides a welding processing device and processing technology for aviation oxygen cylinders to solve the problem of low quality that easily occurs when welding aviation oxygen cylinders.

[0004] The welding processing device and processing technology for aviation oxygen cylinders of the present invention adopt the following technical solutions:

[0005] A welding processing device for aviation oxygen cylinders, which includes a bracket, a welding sleeve, a sealing ring, and an extrusion member.

[0006] A first support member is provided on the bracket, and the first support member is used to support the oxygen cylinder; the welding sleeve has a welding groove with an opening facing its own axis, and a second support member is provided on the bracket, and the second support member can support the welding sleeve to be coaxial with the oxygen cylinder; the inner diameter of the welding sleeve is equal to the outer diameter of the oxygen cylinder; a welding head is provided on the welding sleeve, and the welding head can move along the circumferential direction of the welding sleeve; a suction pump is provided on the bracket, and the suction pump is used to extract the gas in the welding groove; the sealing ring is sleeved outside the oxygen cylinder, and the sealing ring can contact the welding sleeve; the pressing member is used to press the sealing ring, and the pressing member can change the pressing force on the sealing ring according to the negative pressure state inside the welding sleeve or the oxygen cylinder, and the effect of sealing the gap between the oxygen cylinder and the welding sleeve when the sealing ring is pressed is different.

[0007] Further, the pressing member includes a clamp, the clamp has a notch in its circumferential direction, the clamp has a first end and a second end, the clamp has a pressing inclined surface, the pressing inclined surface abuts against the sealing ring, and when the first end and the second end approach each other, the pressing inclined surface can press the sealing ring.

[0008] Further, the pressing member includes a locking screw, the locking screw penetrates through the first end and the second end at the same time, the locking screw is threadedly connected to the first end and the second end at the same time, and when the locking screw rotates, the first end and the second end can approach or move away from each other.

[0009] Further, the pressing member further includes an induction tube, an induction disk and a driving rack, the induction tube penetrates through the welding sleeve, the induction disk is slidably sealed in the induction tube, a first elastic member is connected between the induction disk and the end of the induction tube, and the first elastic member is used to maintain the induction disk in a balanced state in the induction tube; a driving rod is fixedly connected to the induction disk, the driving rod is connected to the driving rack, and a driving gear is coaxially and fixedly arranged on the locking screw, and the driving rack is always meshed with the driving gear.

[0010] Further, the driving rod can be telescopic, one end of the driving rod is fixedly connected to the induction disk, and the other end of the driving rod is connected to the driving rack.

[0011] Further, the extruding member further includes an adjusting motor. The driving rod includes a first section and a second section. A thread is provided on the outer sidewall of the first section. The first section is fixedly connected to the induction disc. A plugging slot is provided on the second section, and a thread groove is provided on the inner sidewall of the plugging slot. The second section is rotatably connected to the driving rack, and the first section is in threaded connection with the second section; the adjusting motor is fixedly connected to the driving rack, and the adjusting motor is used to drive the second section to rotate.

[0012] Further, an arc groove is provided on the welding sleeve, and an elastic piece for blocking the arc groove is provided on the welding sleeve. The welding head penetrates through the elastic piece, and the elastic piece can be deformed so that the welding head can slide along the arc groove.

[0013] Further, a fixed guide rail is provided in the welding groove, and a sliding plate is further provided in the welding groove. The sliding plate is slidably arranged along the fixed guide rail. The welding head penetrates through the sliding plate. A fixed rack is provided on the sliding plate, and a driving motor is fixedly arranged on the welding sleeve. The power output shaft of the driving motor extends into the welding groove, and an auxiliary gear is fixedly arranged on the power output shaft of the driving motor. The auxiliary gear is always meshed with the fixed rack.

[0014] Further, an auxiliary motor is provided on the bracket, and the auxiliary motor is used to drive the oxygen cylinder to rotate around its own axis.

[0015] An aviation oxygen cylinder welding and processing process, using the aviation oxygen cylinder welding and processing device, includes the following steps:

[0016] S1, positioning the oxygen cylinder using the first support member;

[0017] S2, positioning the welding sleeve using the second support member;

[0018] S3, using the air extraction pump to extract the gas in the welding groove;

[0019] S4, when the negative pressure state in the welding groove changes, the extruding member changes the extrusion force on the sealing ring;

[0020] S5, when the air pressure in the welding groove reaches the preset standard, welding the oxygen cylinder using the welding head.

[0021] The beneficial effects of the present invention are as follows: an aviation oxygen cylinder welding processing device and a processing technology of the present invention, wherein the aviation oxygen cylinder welding processing device comprises a bracket, a welding sleeve, a sealing ring and an extrusion piece. When welding the oxygen cylinder, the oxygen cylinder to be welded is first supported on the bracket by a first support piece, and the welding sleeve is supported on the bracket by a second support piece. Under the action of the sealing ring, the gap between the welding sleeve and the side wall of the oxygen cylinder can be blocked. When the vacuum pump extracts the gas in the welding groove, the air pressure in the welding groove and the air pressure inside the oxygen cylinder decrease at the same time. When the negative pressure state inside the welding sleeve or the oxygen cylinder changes, the gas flows through the gap between the oxygen cylinder and the welding sleeve. At this time, the extrusion piece changes the extrusion force on the sealing ring, so that the sealing ring further blocks the gap between the oxygen cylinder and the welding sleeve, thereby ensuring the negative pressure level inside the welding groove and the oxygen cylinder, thereby improving the quality of laser welding of oxygen cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A schematic diagram of the structure of an aviation oxygen cylinder welding processing device provided by an embodiment of the present invention;

[0024] Figure 2 A front view of an aviation oxygen cylinder welding processing device provided by an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Sectional view in the AA direction;

[0026] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0027] Figure 5 A schematic diagram of the cross-section structure of an aviation oxygen cylinder welding processing device provided by an embodiment of the present invention;

[0028] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0029] Figure 7 A top view of an aviation oxygen cylinder welding processing device provided by an embodiment of the present invention;

[0030] Figure 8 for Figure 7 Cross-sectional view in the middle DD direction;

[0031] Figure 9 is Figure 8 Partial enlarged view at position E in

[0032] Figure 10 is Figure 8 Partial enlarged view at position F in

[0033] In the figure: 110, support; 111, mounting plate; 112, first support rod; 113, second support rod; 114, first clamping disc; 115, second clamping disc; 120, welding sleeve; 130, sealing ring; 140, clamp; 141, first end; 142, second end; 150, locking screw; 160, oxygen cylinder; 161, first part; 162, second part; 210, induction tube; 220, induction disc; 230, driving rack; 240, first spring; 250, driving gear; 260, driving rod; 261, first section; 262, second section; 270, adjustment motor; 310, arc groove; 320, elastic piece; 330, fixed guide rail; 340, sliding plate; 341, fixed rack; 350, driving motor; 351, auxiliary gear; 360, auxiliary motor. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] 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 meaning. And 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 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 should not be construed as a limitation of the present invention.

[0036] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean 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, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] As Figures 1 to 10 shown, a welding and processing device for an aviation oxygen cylinder provided by an embodiment of the present invention includes a bracket 110, a welding sleeve 120, a sealing ring 130 and an extrusion member.

[0038] The bracket 110 includes a mounting plate 111 which is horizontally arranged and can be placed on a tabletop or an operating platform. A first support member is provided on the bracket 110 for supporting the oxygen cylinder 160; specifically, the first support member includes a first support rod 112 and a second support rod 113, both the first support rod 112 and the second support rod 113 are vertically arranged, the first support rod 112 and the second support rod 113 are arranged at intervals, the lower end of the first support rod 112 is fixedly connected to the mounting plate 111, the lower end of the second support rod 113 is slidably connected to the mounting plate 111, and the distance between the first support rod 112 and the second support rod 113 can be reduced or increased. Further, a push cylinder is provided on the mounting plate 111, and the push cylinder is arranged between the first support rod 112 and the second support rod 113, and the power output shaft of the push cylinder is fixedly connected to the second support rod 113. During the preparation process of the oxygen cylinder 160, it is divided into a first part 161 and a second part 162, and the first part 161 and the second part 162 are welded into a complete quasi-cylindrical structure. A first clamping disc 114 is fixedly provided at the upper end of the first support rod 112, and a second clamping disc 115 is provided on the second support rod 113. During the process of the second support rod 113 approaching the first support rod 112, the second clamping disc 115 and the first clamping disc 114 can jointly squeeze the first part 161 and the second part 162 of the oxygen cylinder 160, so that the first part 161 and the second part 162 of the oxygen cylinder 160 are supported in a state where the axis is horizontal.

[0039] The welding sleeve 120 is slightly circular in shape. A second support member is provided on the bracket 110, and the second support member can support the welding sleeve 120. Under the action of the second support member, the welding sleeve 120 is supported to be coaxial with the oxygen cylinder 160. Further, the second support member is a third support rod, and the third support rod is arranged as a hydraulic telescopic rod. One end of the third support rod is fixedly connected to the mounting plate 111, and the other end of the third support rod is fixedly connected to the welding sleeve 120. By adjusting the length of the third support rod, the axis of the welding sleeve 120 is made the same as the axis of the oxygen cylinder 160. The welding sleeve 120 has an inner wall and an outer wall. The inner diameter of the welding sleeve 120 is equal to the outer diameter of the oxygen cylinder 160. The welding sleeve 120 can be sleeved on the outside of the oxygen cylinder 160. The inner wall of the welding sleeve 120 is provided with a welding groove with an opening facing the direction of its own axis. The welding groove is arranged in a ring shape. When the welding sleeve 120 is arranged on the outside of the oxygen cylinder 160, the opening of the welding groove on the welding sleeve 120 is blocked by the side wall of the oxygen cylinder 160. A welding head is provided on the welding sleeve 120, and the welding head can move along the circumferential direction of the welding sleeve 120. When the welding sleeve 120 is arranged on the outside of the oxygen cylinder 160, the welding head can weld the first part 161 and the second part 162 of the oxygen cylinder 160. A suction pump is provided on the bracket 110, and the suction pump is used to extract the gas in the welding groove. When the first part 161 and the second part 162 of the oxygen cylinder 160 are not completely welded, the internal welding groove of the oxygen cylinder 160 is in a communicating state. When the suction pump extracts the gas in the welding groove, the air pressure in the oxygen cylinder 160 gradually decreases.

[0040] The sealing ring 130 is made of rubber. The sealing ring 130 can be sleeved on the outside of the oxygen cylinder 160, and the sealing ring 130 can contact the welding sleeve 120. Under the action of the sealing ring 130, the gap between the welding sleeve 120 and the oxygen cylinder 160 can be blocked. Further, two sealing rings 130 are provided. After the welding groove is provided on the welding sleeve 120, the welding sleeve 120 has two positions contacting the outer side wall of the oxygen cylinder 160. By providing two sealing rings 130, it is ensured that the gaps between the welding sleeve 120 and the oxygen cylinder 160 can be sealed.

[0041] The extrusion member is used to extrude the sealing ring 130. When the sealing ring 130 is extruded, the ability of the sealing ring 130 to block the gap between the welding sleeve 120 and the oxygen cylinder 160 is improved. The extrusion member can change the extrusion force on the sealing ring 130 according to the negative pressure state inside the welding sleeve 120 or the oxygen cylinder 160. The greater the force with which the sealing ring 130 is extruded, the higher the sealing effect of the sealing ring 130 on the gap between the oxygen cylinder 160 and the welding sleeve 120. However, the greater the extrusion force on the sealing ring 130, the lower the service life of the sealing ring 130.

[0042] In a welding and processing device for an aviation oxygen cylinder according to the present invention, when welding the oxygen cylinder 160, first, the oxygen cylinder 160 to be welded is supported on the bracket 110 by the first support member, and at the same time, the welding sleeve 120 is supported on the bracket 110 by the second support member. Under the action of the sealing ring 130, the gap between the welding sleeve 120 and the side wall of the oxygen cylinder 160 can be blocked. When the air pump extracts the gas in the welding groove, the air pressure in the welding groove and the air pressure inside the oxygen cylinder 160 decrease simultaneously. When the negative pressure state inside the welding sleeve 120 or the oxygen cylinder 160 changes, the gas flows through the gap between the oxygen cylinder 160 and the welding sleeve 120. At this time, the pressing member changes the pressing force on the sealing ring 130, so that the sealing ring 130 further blocks the gap between the oxygen cylinder 160 and the welding sleeve 120, ensuring the degree of negative pressure in the welding groove and inside the oxygen cylinder 160, and thus improving the quality of laser welding the oxygen cylinder 160.

[0043] In one embodiment, the pressing member includes a clamp 140. There are two clamps 140, and each clamp 140 is arranged corresponding to one sealing ring 130, and each clamp 140 can contact one sealing ring 130. The clamp 140 has a notch in its circumferential direction. By providing a notch on the clamp 140, the clamp 140 has a first end 141 and a second end 142. The circumferential side wall of the clamp 140 has a pressing inclined surface, and the pressing inclined surface abuts against the sealing ring 130. When the first end 141 and the second end 142 approach each other, the diameter of the clamp 140 changes, and the pressing inclined surface on the clamp 140 can press the sealing ring 130, thereby changing the sealing effect of the sealing ring 130 on the gap between the oxygen cylinder 160 and the welding sleeve 120.

[0044] In one embodiment, the pressing member includes a locking screw 150. The locking screw 150 penetrates through the first end 141 and the second end 142 of the clamp 140 at the same time, and the locking screw 150 is threadedly connected to the first end 141 and the second end 142 at the same time. When the locking screw 150 rotates, the first end 141 and the second end 142 can approach or move away from each other. Further, the locking screw 150 includes a first threaded section and a second threaded section. The first threaded section and the second threaded section are arranged at intervals in the axial direction of the locking screw 150, and the spiral directions of the first threaded section and the second threaded section are opposite. The first threaded section is threadedly connected to the first end 141 of the clamp 140, and the second threaded section is threadedly connected to the second end 142 of the clamp 140. When the locking screw 150 rotates, the distance between the first end 141 and the second end 142 of the clamp 140 changes, thereby changing the pressing degree on the sealing ring 130, and further changing the sealing effect of the sealing ring 130 on the gap between the oxygen cylinder 160 and the welding sleeve 120.

[0045] In one embodiment, the extrusion member further includes an induction tube 210, an induction disc 220, and a driving rack 230. The induction tube 210 penetrates through the side wall of the welding sleeve 120. The induction tube 210 is arranged along the radial direction of the welding sleeve 120. One end of the induction tube 210 extends into the welding groove, and the other end of the induction tube 210 extends out of the welding groove. The induction disc 220 is slidably and sealingly arranged in the induction tube 210. By arranging the induction disc 220, the welding groove is in a relatively isolated state from the external environment. A first elastic member is connected between the induction disc 220 and the end of the induction tube 210. The first elastic member is used to maintain the induction disc 220 in a balanced state in the induction tube 210. The first elastic member is a first spring 240. The first spring 240 is coaxially arranged with the induction tube 210. One end of the first spring 240 is fixedly connected to the induction disc 220, and the other end of the first spring 240 is fixedly connected to the end of the induction tube 210. In the initial state, the first spring 240 is in its original length state. When the welding groove is in a negative pressure state, under the action of atmospheric pressure, the induction disc 220 slides in the induction tube 210, and the first spring 240 deforms and stores energy. When the air pressure in the welding groove reaches the preset standard, the induction disc 220 is in a stationary state in the induction tube 210. At this time, if the air pressure in the welding groove fluctuates, under the action of the first spring 240, the induction disc 220 slides in the induction tube 210 again. A driving rod 260 is fixedly connected to the induction disc 220. The driving rod 260 is coaxially arranged with the induction tube 210. The driving rod 260 is connected to the driving rack 230. A driving gear 250 is coaxially and fixedly arranged on the locking screw 150. The driving rack 230 always meshes with the driving gear 250. When the induction disc 220 slides in the induction tube 210, through the transmission of the driving rod 260, the driving rack 230, and the driving gear 250, the locking screw 150 rotates. Further, in the actual production process, after the air pressure in the welding groove reaches the preset standard, where the preset standard of the air pressure in the welding groove is a parameter set artificially. If the air pressure difference between the inside and outside of the welding groove further increases, the induction disc 220 moves closer to the axis direction of the oxygen cylinder 160 along the induction tube 210. Through the transmission of the driving rod 260, the driving rack 230, and the driving gear 250, the locking screw 150 rotates, and the distance between the first end 141 and the second end 142 of the clamp 140 increases, and the extrusion degree of the clamp 140 on the sealing ring 130 decreases, ensuring that the air pressure in the welding groove is maintained at the preset standard. On the contrary, after the air pressure in the welding groove reaches the preset standard, if the air pressure difference between the inside and outside of the welding groove further decreases, the induction disc 220 moves away from the axis direction of the oxygen cylinder 160 along the induction tube 210. Through the transmission of the driving rod 260, the driving rack 230, and the driving gear 250, the locking screw 150 rotates, and the distance between the first end 141 and the second end 142 of the clamp 140 decreases, and the extrusion degree of the clamp 140 on the sealing ring 130 increases, ensuring that the air pressure in the welding groove is maintained at the preset standard.

[0046] In one embodiment, the driving rod 260 can be telescopic. One end of the driving rod 260 is fixedly connected to the induction disc 220, and the other end of the driving rod 260 is connected to the driving rack 230. In the initial state, the driving rod 260 is in the shortest state. When the air pump extracts the gas in the welding groove, the driving rod 260 slowly extends. At this time, the air pressure difference between the inside and outside of the welding groove gradually increases, and the induction disc 220 slowly moves in the induction tube 210. When the driving rod 260 slowly extends, the driving rack 230 is pushed by the driving rod 260, and the driving rack 230 drives the driving gear 250 to rotate. The distance between the first end 141 and the second end 142 of the clamp 140 decreases, and the extrusion force of the clamp 140 on the sealing ring 130 increases until the driving rod 260 extends to the longest state.

[0047] In one embodiment, the pressing member further includes an adjustment motor 270. The driving rod 260 includes a first section 261 and a second section 262. A thread is provided on the outer sidewall of the first section 261. The first section 261 is fixedly connected to the induction disc 220. A plugging groove is provided on the second section 262, and a thread groove is provided on the inner sidewall of the plugging groove. The second section 262 is rotatably connected to the driving rack 230. The first section 261 is plugged into the plugging groove of the second section 262, and the first section 261 is threadedly connected to the second section 262. The adjustment motor 270 is fixedly connected to the driving rack 230, and the power output shaft of the adjustment motor 270 is fixedly connected to the second section 262. When the adjustment motor 270 is started, the adjustment motor 270 drives the second section 262 to rotate. In the initial state, the driving rod 260 is in the shortest state. When the air pump extracts the gas in the welding groove, the adjustment motor 270 is started, and the adjustment motor 270 drives the second section 262 to rotate relative to the first section 261, so that the driving rod 260 gradually extends.

[0048] In one embodiment, an arc groove 310 is provided on the welding sleeve 120. The arc groove 310 penetrates through the side wall of the welding sleeve 120. A spring piece 320 for blocking the arc groove 310 is provided on the welding sleeve 120. By providing the spring piece 320, it is ensured that the inside of the welding groove is in a relatively sealed state. The welding head penetrates through the spring piece 320, and the welding head is fixedly and sealingly connected to the spring piece 320. The spring piece 320 can deform. When welding the first part 161 and the second part 162 of the oxygen cylinder 160, the welding head slides in the arc groove 310, and the welding head completes the welding of the first part 161 and the second part 162 of the oxygen cylinder 160. When the welding head slides along the arc groove 310, the spring piece 320 deforms, but the spring piece 320 remains in a state of blocking the arc groove 310, ensuring that the welding groove will not release pressure outward through the arc groove 310. Further, the arc groove 310 is set at a preset angle. When welding the first part 161 and the second part 162 of the oxygen cylinder 160, according to the setting of the angle of the arc groove 310, it is necessary to adjust the relative rotation of the oxygen cylinder 160 and the welding sleeve 120 so that the welding head welds the un-welded areas of the first part 161 and the second part 162 in the oxygen cylinder 160. When it is necessary to adjust the relative rotation of the oxygen cylinder 160 and the welding sleeve 120, by starting the adjustment motor 270, the driving rod 260 is shortened, and then the distance between the first end 141 and the second end 142 of the clamp 140 increases. The squeezing degree of the clamp 140 on the sealing ring 130 decreases. At this time, the sealing effect of the sealing ring 130 on the gap between the welding sleeve 120 and the oxygen cylinder 160 decreases, and the air pressure in the welding groove returns to the standard atmospheric pressure. The first spring 240 drives the induction disc 220 to return to the initial state, and the induction disc 220 gradually moves away from the axis of the oxygen cylinder 160; when the oxygen cylinder 160 and the welding sleeve 120 rotate relatively, at the same time, the welding head is driven to return to the initial state. When the welding head returns to the initial state, there is relative movement between the oxygen cylinder 160 and the welding sleeve 120. At the same time, the welding head continues to weld the un-welded areas of the first part 161 and the second part 162. When the welding head returns to the initial state, the adjustment motor 270 is driven again, so that the driving rod 260 elongates again, and the distance between the first end 141 and the second end 142 of the clamp 140 decreases. The squeezing degree of the clamp 140 on the sealing ring 130 increases. At this time, the sealing effect of the sealing ring 130 on the gap between the welding sleeve 120 and the oxygen cylinder 160 is improved.

[0049] In one embodiment, a fixed guide rail 330 is arranged in the welding groove. The fixed guide rail 330 is arranged in an arc shape. A sliding plate 340 is also arranged in the welding groove. The sliding plate 340 is slidably arranged along the fixed guide rail 330. The welding head penetrates through the sliding plate 340. A fixed rack 341 is arranged on the sliding plate 340. A driving motor 350 is fixedly arranged on the welding sleeve 120. The power output shaft of the driving motor 350 extends into the welding groove. An auxiliary gear 351 is fixedly arranged on the power output shaft of the driving motor 350. The auxiliary gear 351 is always meshed with the fixed rack 341. In the initial state, the welding head is at one end of the arc groove 310. When welding the first part 161 and the second part 162 is required, the driving motor 350 is started. The driving motor 350 drives the auxiliary gear 351 to rotate. The auxiliary gear 351 drives the sliding plate 340 to slide on the guide rail through the fixed rack 341. When the welding head moves along the arc groove 310, the welding head welds the first part 161 and the second part 162 of the oxygen cylinder 160. When the welding head moves to the other end of the arc groove 310, the driving motor 350 rotates in the reverse direction. The driving motor 350 drives the welding head to return to the initial state. During this process, the stable welding sleeve 120 remains stationary, and the oxygen cylinder 160 is driven to rotate rapidly, so that the welding head still corresponds to the un-welded areas of the first part 161 and the second part 162. During this process, the welding head still welds the first part 161 and the second part 162.

[0050] In one embodiment, an auxiliary motor 360 is arranged on the bracket 110. The auxiliary motor 360 is used to drive the oxygen cylinder 160 to rotate around its own axis. When it is necessary to adjust the relative rotation between the oxygen cylinder 160 and the welding sleeve 120, after the squeezing degree of the clamp 140 on the sealing ring 130 is reduced, the auxiliary motor 360 is started. The speed at which the auxiliary motor 360 drives the oxygen cylinder 160 to rotate is greater than the speed at which the welding head returns to its original position, ensuring that when the oxygen cylinder 160 and the welding sleeve 120 rotate relative to each other, the welding head maintains the welding action on the oxygen cylinder 160. Further, the auxiliary motor 360 is fixedly connected to the second support rod 113. The second clamping disc 115 is rotatably connected to the second support rod 113. The power output shaft of the auxiliary motor 360 is connected to the second clamping disc 115. When the auxiliary motor 360 is started, the second clamping disc 115 is driven to rotate on the second support rod 113 passively.

[0051] An aviation oxygen cylinder welding and processing technology, using an aviation oxygen cylinder welding and processing device, includes the following steps:

[0052] S1, positioning the oxygen cylinder 160 using the first support member; during the preparation process of the oxygen cylinder 160, it is divided into a first part 161 and a second part 162. The first part 161 and the second part 162 are welded into a complete cylindrical-like structure. The first support member performs butt joint extrusion on the first part 161 and the second part 162.

[0053] S2, position the welding sleeve 120 using the second support member; when positioning the welding sleeve 120, the axis of the welding sleeve 120 is the same as the axis of the oxygen cylinder 160, and the welding sleeve 120 contacts both the first part 161 and the second part 162 simultaneously, then the welding sleeve 120 is at the welding position between the first part 161 and the second part 162.

[0054] S3, use a suction pump to extract the gas in the welding groove; when the first part 161 and the second part 162 of the oxygen cylinder 160 are not completely welded, the internal welding groove of the oxygen cylinder 160 is in a connected state. When the suction pump extracts the gas in the welding groove, the air pressure inside the oxygen cylinder 160 gradually decreases, improving the welding quality of the welding head for the first part 161 and the second part 162.

[0055] S4, when the negative pressure state in the welding groove changes, the extruding member changes the extrusion force on the sealing ring 130; the greater the force with which the sealing ring 130 is extruded, the higher the sealing effect of the sealing ring 130 on the gap between the oxygen cylinder 160 and the welding sleeve 120. However, the greater the extrusion force on the sealing ring 130, the lower the service life of the sealing ring 130. Adjust the extrusion effect on the sealing ring 130 according to the negative pressure state in the welding groove to ensure that the service life of the sealing ring 130 is extended while sealing the gap between the oxygen cylinder 160 and the welding sleeve 120.

[0056] S5, when the air pressure in the welding groove reaches the preset standard, use the welding head to weld the oxygen cylinder 160. In the state where the welding head welds the oxygen cylinder 160, both the welding head and the welding point are in a negative pressure state, thereby improving the welding quality of the welding head for the first part 161 and the second part 162.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An aviation oxygen cylinder welding and processing device, characterized in that, Comprising: an oxygen cylinder, including a first part and a second part; A bracket; a first support member is provided on the bracket, and the first support member is used to support the oxygen cylinder; A welding sleeve, the welding sleeve has a welding groove with an opening facing its own axis, a second support member is provided on the bracket, and the second support member can support the welding sleeve to be coaxial with the oxygen cylinder; the inner diameter of the welding sleeve is equal to the outer diameter of the oxygen cylinder; a welding head is provided on the welding sleeve, and the welding head can move along the circumferential direction of the welding sleeve; a suction pump is provided on the bracket, and the suction pump is used to extract the gas in the welding groove, the welding groove is annular, and when the first part and the second part of the oxygen cylinder are not completely welded, the internal welding grooves of the oxygen cylinder are in a communicating state; A sealing ring, the sealing ring is sleeved on the outside of the oxygen cylinder, and the sealing ring can contact the welding sleeve; An extrusion member, including a clamp, an induction tube, an induction disc, a driving rack and a locking screw, the clamp has a notch in its own circumferential direction, the clamp has a first end and a second end, the clamp has an extrusion inclined surface, the extrusion inclined surface abuts against the sealing ring, when the first end and the second end approach, the extrusion inclined surface can extrude the sealing ring, the locking screw penetrates through the first end and the second end at the same time, the locking screw is threadedly connected to the first end and the second end at the same time, when the locking screw rotates, the first end and the second end can approach or move away from each other, the induction tube penetrates through the welding sleeve, the induction disc is slidably sealed in the induction tube, a first elastic member is connected between the induction disc and the end of the induction tube, and the first elastic member is used to maintain the induction disc in a balanced state in the induction tube; a driving rod is fixedly connected to the induction disc, the driving rod is connected to the driving rack, a driving gear is coaxially and fixedly arranged on the locking screw, the driving rack always meshes with the driving gear, the driving rod can be telescopic, one end of the driving rod is fixedly connected to the induction disc, the other end of the driving rod is connected to the driving rack, the driving rod includes a first section and a second section, the outer side wall of the first section is provided with threads, the first section is fixedly connected to the induction disc, the second section is provided with a plugging groove, the inner side wall of the plugging groove is provided with a thread groove, the second section is rotatably connected to the driving rack, and the first section is threadedly connected to the second section; an adjustment motor is fixedly connected to the driving rack, and the adjustment motor is used to drive the second section to rotate. The extrusion member is used to extrude the sealing ring, and the extrusion member can change the extrusion force on the sealing ring according to the negative pressure state inside the welding sleeve or the oxygen cylinder. The greater the force with which the sealing ring is extruded, the higher the sealing effect of the sealing ring on the gap between the oxygen cylinder and the welding sleeve.

2. The welding and processing device for aviation oxygen cylinders according to claim 1, wherein: An arc groove is provided on the welding sleeve, a spring piece for blocking the arc groove is provided on the welding sleeve, the welding head penetrates through the spring piece, and the spring piece can be deformed so that the welding head can slide along the arc groove.

3. The welding and processing device for aviation oxygen cylinders according to claim 2, wherein: A fixed guide rail is provided in the welding groove, a sliding plate is also provided in the welding groove, the sliding plate is slidably arranged along the fixed guide rail, the welding head penetrates through the sliding plate, a fixed rack is provided on the sliding plate, a driving motor is fixedly arranged on the welding sleeve, the power output shaft of the driving motor extends into the welding groove, and an auxiliary gear is fixedly arranged on the power output shaft of the driving motor, and the auxiliary gear always meshes with the fixed rack.

4. The welding and processing device for aviation oxygen cylinders according to claim 3, wherein: An auxiliary motor is provided on the bracket, and the auxiliary motor is used to drive the oxygen cylinder to rotate around its own axis.

5. A welding and processing process for an aviation oxygen cylinder, which uses the aviation oxygen cylinder welding and processing device described in any one of claims 1-3, characterized in that, Including the following steps: S1, positioning the oxygen cylinder using the first support member; S2, position the welding sleeve using the second support member; S3, extract the gas in the welding groove using a suction pump; S4, when the negative pressure state in the welding groove changes, the extrusion member changes the extrusion force on the sealing ring; S5, when the air pressure in the welding groove reaches the preset standard, weld the oxygen cylinder using the welding head.

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