Aviation oxygen bottle welding machining device and machining process

Abstract

The invention relates to the technical field of welding equipment, in particular to an aviation oxygen bottle welding machining device and a machining technology.The aviation oxygen bottle welding machining device comprises a support, a welding sleeve, a sealing ring and an extrusion part. Meanwhile, a second supporting piece is used for supporting the welding sleeve on the support, under the action of a sealing ring, a gap between the welding sleeve and the side wall of the oxygen bottle can be blocked, when the sucking pump sucks gas in the welding groove, the gas pressure in the welding groove and the gas pressure in the oxygen bottle are decreased at the same time, and when the negative pressure state in the welding sleeve or the oxygen bottle is changed, the gas pressure in the welding groove is decreased. Gas flows through the gap between the oxygen bottle and the welding sleeve, at the moment, the extrusion piece changes the extrusion force on the sealing ring, the sealing ring further blocks the gap between the oxygen bottle and the welding sleeve, the negative pressure degree in the welding groove and the oxygen bottle is ensured, and then the quality of the laser welding oxygen bottle is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to a welding processing device and a processing technology for an aviation oxygen cylinder. Background Art

[0002] In the field of aerospace, oxygen cylinders are key components to ensure flight safety and the normal operation of related systems, and the quality of their welding has a vital impact. Laser welding technology, with its many outstanding advantages, has shown great value in the application of oxygen cylinder welding, which can significantly improve welding efficiency and ensure that the welding quality reaches a high level. However, when high-power laser welding is used, welding defects such as spatter, pores, shrinkage, and surface collapse are easily generated during the welding process. The appearance of these defects makes it difficult to reliably guarantee the stability of weld formation. At present, in order to overcome these defects, it is often necessary to create a negative pressure environment to carry out welding work. Although the negative pressure requirements of laser negative pressure welding are slightly lower than those of electron beam negative pressure welding, the cost of building a negative pressure chamber is high, which greatly increases the cost investment of aviation oxygen cylinder welding processing; in addition, the working process of the negative pressure chamber is complicated in actual use, involving many operating steps and parameter control, and to a certain extent, it will also have a negative effect on the welding quality, such as affecting the laser energy transmission effect, which is not conducive to ensuring the high quality requirements of oxygen cylinder welding. Summary of the invention

[0003] The invention provides an aviation oxygen cylinder welding processing device and a processing technology to solve the problem of low quality that is easy to occur in the existing welding of aviation oxygen cylinders.

[0004] The present invention discloses an aviation oxygen cylinder welding processing device and a processing technology using the following technical solutions: An aviation oxygen cylinder welding processing device comprises a bracket, a welding sleeve, a sealing ring and an extrusion piece.

[0005] The bracket is provided with a first support member, 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 the bracket is provided with a second support member, 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; the welding sleeve is provided with a welding head, and the welding head can move along the circumferential direction of the welding sleeve; the bracket is provided with an exhaust pump, and the exhaust pump is used to extract the gas in the welding groove; the sealing ring is sleeved on the outside of the oxygen cylinder, and the sealing ring can contact the welding sleeve; 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, and the effect of sealing the gap between the oxygen cylinder and the welding sleeve when the sealing ring is squeezed is different.

[0006] Furthermore, the extrusion member includes a clamp, which has a notch in its circumferential direction, a first end and a second end, and an extrusion slope, which abuts against the sealing ring. When the first end and the second end are close to each other, the extrusion slope can extrude the sealing ring.

[0007] Furthermore, the extrusion member includes a locking screw, which passes through the first end and the second end at the same time, and is threadedly connected to the first end and the second end at the same time. When the locking screw is rotated, the first end and the second end can approach or move away from each other.

[0008] Furthermore, the extrusion piece also includes an induction tube, an induction disk and a driving rack. The induction tube is arranged to pass through the welding sleeve, and the induction disk is slidingly and sealingly arranged 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, and the driving rod is connected to the driving rack. A driving gear is coaxially fixedly arranged on the locking screw, and the driving rack is always engaged with the driving gear.

[0009] Furthermore, the driving rod is retractable, one end of the driving rod is fixedly connected to the induction plate, and the other end of the driving rod is connected to the driving rack.

[0010] Furthermore, the extrusion piece also includes an adjustment motor, the drive rod includes a first section and a second section, the outer wall of the first section is provided with a thread, the first section is fixedly connected to the induction plate, the second section is provided with a plug-in slot, the inner wall of the plug-in slot is provided with a threaded slot, the second section is rotatably connected to the drive rack, and the first section is threadedly connected to the second section; the adjustment motor is fixedly connected to the drive rack, and the adjustment motor is used to drive the second section to rotate.

[0011] Furthermore, the welding sleeve is provided with an arc groove, and the welding sleeve is provided with a spring sheet for blocking the arc groove, the welding head passes through the spring sheet, and the spring sheet can be deformed so that the welding head can slide along the arc groove.

[0012] Furthermore, a fixed guide rail is provided in the welding groove, and a slide plate is also provided in the welding groove. The slide plate is slidably arranged along the fixed guide rail, and the welding head is arranged through the slide plate. A fixed rack is provided on the slide plate, and a driving motor is fixedly provided on the welding sleeve. The power output shaft of the driving motor extends into the welding groove, and an auxiliary gear is fixedly provided on the power output shaft of the driving motor, and the auxiliary gear is always engaged with the fixed rack.

[0013] Furthermore, an auxiliary motor is arranged on the bracket, and the auxiliary motor is used to drive the oxygen cylinder to rotate around its own axis.

[0014] An aviation oxygen cylinder welding process, using the aviation oxygen cylinder welding process device, comprises the following steps: S1, positioning the oxygen cylinder using the first support member; S2, positioning the welding sleeve using the second support member; S3, using the vacuum pump to extract the gas in the welding tank; 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 tank reaches a preset standard, use the welding head to weld the oxygen cylinder.

[0015] 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

[0016] 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.

[0017] Figure 1 A schematic diagram of the structure of an aviation oxygen cylinder welding processing device provided by an embodiment of the present invention; Figure 2 A front view of an aviation oxygen cylinder welding processing device provided by an embodiment of the present invention; Figure 3 for Figure 2 Sectional view in the AA direction; Figure 4 for Figure 3 A partial enlarged view of point B in the middle; 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; Figure 6 for Figure 5 A partial enlarged view of point C in the middle; Figure 7 A top view of an aviation oxygen cylinder welding processing device provided by an embodiment of the present invention; Figure 8 for Figure 7 Cross-sectional view in the middle DD direction; Fig. 9 for Figure 8 A partial enlarged view of point E in the middle; Fig.10 for Figure 8 A partial enlarged view of point F in the middle.

[0018] In the figure: 110, bracket; 111, mounting plate; 112, first support rod; 113, second support rod; 114, first clamping plate; 115, second clamping plate; 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 plate; 230, driving rack; 240, first spring; 250, driving gear; 260, driving rod; 261, first section; 262, second section; 270, adjusting motor; 310, arc groove; 320, spring piece; 330, fixed guide rail; 340, slide plate; 341, fixed rack; 350, driving motor; 351, auxiliary gear; 360, auxiliary motor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] like Figures 1 to 10 As shown, an aviation oxygen cylinder welding processing device provided by an embodiment of the present invention includes a bracket 110, a welding sleeve 120, a sealing ring 130 and an extrusion piece.

[0023] The bracket 110 includes a mounting plate 111, which is horizontally arranged and can be placed on a desktop or an operating table. The bracket 110 is provided with a first support member, which is used to support the oxygen cylinder 160; specifically, the first support member includes a first support rod 112 and a second support rod 113, which are both vertically arranged, and 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, and 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, and 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. The oxygen cylinder 160 is divided into a first part 161 and a second part 162 during the preparation process, and the first part 161 and the second part 162 are welded into a complete cylindrical structure. A first clamping plate 114 is fixedly provided at the upper end of the first support rod 112, and a second clamping plate 115 is provided on the second support rod 113. When the second support rod 113 approaches the first support rod 112, the second clamping plate 115 and the first clamping plate 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.

[0024] The welding sleeve 120 is slightly annular in shape. The bracket 110 is provided with a second support member, which 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, which is set 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 the same as the axis of the oxygen cylinder 160. The welding sleeve 120 has an inner side wall and an outer side 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 outer side of the oxygen cylinder 160. The inner side wall of the welding sleeve 120 is provided with a welding groove with an opening facing the axis direction of the welding sleeve 120. The welding groove is set in a ring shape. When the welding sleeve 120 is set on the outer side 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. The welding sleeve 120 is provided with a welding head, which can move along the circumferential direction of the welding sleeve 120. When the welding sleeve 120 is arranged outside the oxygen cylinder 160, the welding head can weld the first part 161 and the second part 162 of the oxygen cylinder 160. The bracket 110 is provided with an air pump, which 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 connected state. When the air pump extracts the gas in the welding groove, the gas pressure in the oxygen cylinder 160 gradually decreases.

[0025] The sealing ring 130 is made of rubber. The sealing ring 130 can be sleeved on the outside of the oxygen cylinder 160. 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 wall of the oxygen cylinder 160. By providing two sealing rings 130, it is ensured that the gap between the welding sleeve 120 and the oxygen cylinder 160 can be sealed.

[0026] The extrusion piece is used to extrude the sealing ring 130. When the sealing ring 130 is squeezed, the ability of the sealing ring 130 to seal the gap between the welding sleeve 120 and the oxygen cylinder 160 is improved. The extrusion piece 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 squeezed, the higher the effect of the sealing ring 130 in sealing 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.

[0027] In an aviation oxygen cylinder welding processing device of the present invention, when welding an oxygen cylinder 160, the oxygen cylinder 160 to be welded is first supported on the bracket 110 by using a first support member, and the welding sleeve 120 is supported on the bracket 110 by using a 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 vacuum 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 at the same time. 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 extrusion member changes the extrusion 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 negative pressure level inside the welding groove and the oxygen cylinder 160, thereby improving the quality of laser welding of the oxygen cylinder 160.

[0028] In one embodiment, the extrusion member includes a clamp 140, two clamps 140 are provided, each clamp 140 is provided corresponding to a sealing ring 130, and each clamp 140 can contact a sealing ring 130. The clamp 140 has a notch in its own circumferential direction. By providing the 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 an extrusion slope, which abuts against the sealing ring 130. When the first end 141 and the second end 142 are close, the diameter of the clamp 140 changes, and the extrusion slope on the clamp 140 can squeeze 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.

[0029] In one embodiment, the extrusion piece includes a locking screw 150, which simultaneously passes through the first end 141 and the second end 142 of the clamp 140, and 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 thread segment and a second thread segment, which are spaced apart in the axial direction of the locking screw 150, and the spiral directions of the first thread segment and the second thread segment are opposite. The first thread segment is threadedly connected to the first end 141 of the clamp 140, and the second thread segment 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 degree of extrusion of the sealing ring 130, and then changing the sealing effect of the sealing ring 130 on the gap between the oxygen cylinder 160 and the welding sleeve 120.

[0030] In one embodiment, the extrusion piece further includes an induction tube 210, an induction disc 220 and a driving rack 230. The induction tube 210 penetrates 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 outside the welding groove. The induction disc 220 is slidingly sealed and arranged in the induction tube 210. By arranging the induction disc 220, the welding groove is relatively isolated 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 induction disc 220. At the end of the induction tube 210, in the initial state, the first spring 240 is in the original length state. When the welding groove is in a negative pressure state, under the action of atmospheric pressure, the induction plate 220 slides in the induction tube 210, and the first spring 240 is deformed. The first spring 240 accumulates force. When the air pressure in the welding groove reaches a preset standard, the induction plate 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 plate 220 slides again in the induction tube 210. A driving rod 260 is fixedly connected to the induction disk 220, and 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 fixedly arranged on the locking screw 150. The driving rack 230 is always engaged with the driving gear 250. When the induction disk 220 slides in the induction tube 210, the locking screw 150 is rotated through the transmission of the driving rod 260, the driving rack 230 and the driving gear 250. Furthermore, in the actual production process, after the air pressure in the welding groove reaches a preset standard, wherein the preset standard of the air pressure in the welding groove is a parameter considered to be set, if the air pressure difference inside and outside the welding groove further increases, the induction plate 220 approaches the axial direction of the oxygen cylinder 160 along the induction tube 210, and 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 degree of compression of the clamp 140 on the sealing ring 130 is reduced, thereby 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 is further reduced, the induction plate 220 moves away from the axis direction of the oxygen cylinder 160 along the induction tube 210, and the locking screw 150 is rotated through the transmission of the driving rod 260, the driving rack 230 and the driving gear 250, and the distance between the first end 141 and the second end 142 of the clamp 140 is reduced, and the degree of compression of the clamp 140 on the sealing ring 130 is increased, ensuring that the air pressure in the welding groove is maintained at the preset standard.

[0031] In one embodiment, the driving rod 260 is retractable, one end of the driving rod 260 is fixedly connected to the induction disk 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 vacuum pump extracts the gas in the welding groove, the driving rod 260 slowly extends. At this time, the air pressure difference inside and outside the welding groove gradually increases, and the induction disk 220 moves slowly 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, and the distance between the first end 141 and the second end 142 of the clamp 140 is reduced, and the squeezing force of the clamp 140 on the sealing ring 130 increases until the driving rod 260 is extended to the longest state.

[0032] In one embodiment, the extrusion member further includes an adjustment motor 270, the driving rod 260 includes a first section 261 and a second section 262, the outer wall of the first section 261 is provided with a thread, the first section 261 is fixedly connected to the induction plate 220, the second section 262 is provided with a plug-in slot, the inner wall of the plug-in slot is provided with a threaded slot, the second section 262 is rotatably connected to the driving rack 230, the first section 261 is plugged into the plug-in slot 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 vacuum pump extracts gas in the welding tank, 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.

[0033] In one embodiment, the welding sleeve 120 is provided with an arc groove 310, and the arc groove 310 penetrates the side wall of the welding sleeve 120. The welding sleeve 120 is provided with a spring piece 320 for blocking the arc groove 310. By providing the spring piece 320, it is ensured that the inside of the welding groove is in a relatively closed state. The welding head penetrates the spring piece 320, and the welding head is fixedly and sealedly connected with the spring piece 320. The spring piece 320 can be deformed. 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 is deformed, but the spring piece 320 keeps blocking the arc groove 310, ensuring that the welding groove will not release pressure outward through the arc groove 310. Furthermore, the arc groove 310 is set to a preset angle. When welding the first part 161 and the second part 162 of the oxygen cylinder 160, according to the angle setting 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 area of ​​the oxygen cylinder 160 where the first part 161 and the second part 162 are not welded. When it is necessary to adjust the relative rotation of the oxygen cylinder 160 and the welding sleeve 120, the adjustment motor 270 is started to shorten the drive rod 260, thereby increasing the distance between the first end 141 and the second end 142 of the clamp 140, and reducing the degree of compression of the clamp 140 on the sealing ring 130. 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 reduced, and the air pressure in the welding groove is restored to the standard atmospheric pressure. The first spring 240 drives the induction disk 220 to restore to the initial state, and the induction disk 220 gradually moves away from the axis of the oxygen cylinder 160; when the oxygen cylinder 160 and the welding sleeve 120 are in contact, the first spring 240 drives the induction disk 220 to return to the initial state, and the induction disk 220 gradually moves away from the axis of the oxygen cylinder 160. During relative rotation, the welding head is driven to return to its initial state at the same time. When the welding head returns to its initial state, the oxygen cylinder 160 and the welding sleeve 120 move relative to each other. At the same time, the welding head continues to weld the unwelded areas of the first part 161 and the second part 162. When the welding head returns to its initial state, the adjustment motor 270 is driven again to extend the driving rod 260 again, thereby reducing the distance between the first end 141 and the second end 142 of the clamp 140. The clamp 140 squeezes the sealing ring 130 more, and 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.

[0034] In one of the embodiments, a fixed guide rail 330 is provided in the welding groove, and the fixed guide rail 330 is arranged in an arc shape. A slide plate 340 is also provided in the welding groove, and the slide plate 340 is slidably arranged along the fixed guide rail 330. The welding head is arranged through the slide plate 340, and a fixed rack 341 is arranged on the slide plate 340. A driving motor 350 is fixedly provided on the welding sleeve 120, and a power output shaft of the driving motor 350 extends into the welding groove. An auxiliary gear 351 is fixedly provided on the power output shaft of the driving motor 350, and the auxiliary gear 351 is always engaged with the fixed rack 341. In the initial state, the welding head is at one end of the arc groove 310. When it is necessary to weld the first part 161 and the second part 162, the driving motor 350 Start, the driving motor 350 drives the auxiliary gear 351 to rotate, and the auxiliary gear 351 drives the slide 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 opposite direction, and the driving motor 350 drives the welding head to recover to the initial state. During this process, the stable welding sleeve 120 remains stationary and drives the oxygen cylinder 160 to rotate rapidly, so that the welding head still corresponds to the unwelded area 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.

[0035] In one embodiment, the bracket 110 is provided with an auxiliary motor 360, which is used to drive the oxygen cylinder 160 to rotate around its own axis. When the relative rotation between the oxygen cylinder 160 and the welding sleeve 120 needs to be adjusted, the auxiliary motor 360 is started after the degree of compression of the sealing ring 130 by the clamp 140 is reduced. The auxiliary motor 360 drives the oxygen cylinder 160 to rotate at a speed greater than the speed of resetting the welding head, 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 plate 115 is rotatably connected to the second support rod 113, and the power output shaft of the auxiliary motor 360 is connected to the second clamping plate 115. When the auxiliary motor 360 is started, the second clamping plate 115 is passively rotated on the second support rod 113.

[0036] An aviation oxygen cylinder welding process, using an aviation oxygen cylinder welding process device, includes the following steps: S1, use the first support member to position the oxygen cylinder 160; the oxygen cylinder 160 is divided into a first part 161 and a second part 162 during the preparation process, the first part 161 and the second part 162 are welded into a complete cylindrical structure, and the first support member performs docking and extrusion on the first part 161 and the second part 162.

[0037] S2, use the second support member to position the welding sleeve 120; 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 the first part 161 and the second part 162 at the same time, then the welding sleeve 120 is in the welding position of the first part 161 and the second part 162.

[0038] S3, use a vacuum 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 vacuum pump extracts the gas in the welding groove, the air pressure in the oxygen cylinder 160 gradually decreases, thereby improving the welding quality of the welding head for the first part 161 and the second part 162.

[0039] S4, when the negative pressure state in the welding groove changes, the extrusion member changes the extrusion pressure on the sealing ring 130; the greater the force with which the sealing ring 130 is squeezed, the higher the effect of the sealing ring 130 in sealing the gap between the oxygen cylinder 160 and the welding sleeve 120; however, the greater the extrusion pressure on the sealing ring 130, the lower the service life of the sealing ring 130; the extrusion effect on the sealing ring 130 is adjusted according to the negative pressure state in the welding groove to ensure that the sealing ring 130 extends the service life of the sealing ring 130 while sealing the gap between the oxygen cylinder 160 and the welding sleeve 120.

[0040] S5, when the air pressure in the welding tank reaches the preset standard, the welding head is used to weld the oxygen cylinder 160. When the welding head is welding the oxygen cylinder 160, the welding head and the welding point are both in a negative pressure state, thereby improving the welding quality of the welding head to the first part 161 and the second part 162.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An aviation oxygen cylinder welding processing device, characterized in that: include: 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, wherein the welding sleeve has a welding groove opening toward its own axis, the bracket is provided with a second support member, 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; the welding sleeve is provided with a welding head, and the welding head can move along the circumferential direction of the welding sleeve; the bracket is provided with an air pump, and the air pump is used to extract the gas in the welding groove; A sealing ring, which is sleeved on the outside of the oxygen cylinder and can contact the welding sleeve; An extrusion piece is used to extrude the sealing ring. The extrusion piece can change the extrusion force on the sealing ring according to the negative pressure state inside the welding sleeve or the oxygen cylinder. When the sealing ring is squeezed, the effect of sealing the gap between the oxygen cylinder and the welding sleeve is different.

2. The aviation oxygen cylinder welding processing device according to claim 1 is characterized in that: The extrusion member includes a clamp having a notch in its circumferential direction, a first end and a second end, and an extrusion slope abutting against the sealing ring. When the first end and the second end are close to each other, the extrusion slope can extrude the sealing ring.

3. The aviation oxygen cylinder welding processing device according to claim 2 is characterized in that: The extrusion member includes a locking screw, which passes through the first end and the second end at the same time, and is threadedly connected to the first end and the second end at the same time. When the locking screw is rotated, the first end and the second end can move closer to or farther away from each other.

4. The aviation oxygen cylinder welding processing device according to claim 3 is characterized in that: The extrusion piece also includes an induction tube, an induction disc and a driving rack. The induction tube is arranged to penetrate the welding sleeve. The induction disc is slidingly and sealingly arranged in the induction tube. A first elastic member is connected between the induction disc and the end of the induction tube. 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, and the driving rod is connected to the driving rack. A driving gear is coaxially fixedly arranged on the locking screw, and the driving rack is always engaged with the driving gear.

5. The aviation oxygen cylinder welding processing device according to claim 4 is characterized in that: The driving rod is retractable, one end of the driving rod is fixedly connected to the induction plate, and the other end of the driving rod is connected to the driving rack.

6. The aviation oxygen cylinder welding processing device according to claim 5, characterized in that: The extrusion piece also includes an adjustment motor, and the drive rod includes a first section and a second section. The outer wall of the first section is provided with a thread, and the first section is fixedly connected to the induction plate. The second section is provided with a plug-in slot, and the inner wall of the plug-in slot is provided with a threaded slot. The second section is rotatably connected to the drive rack, and the first section is threadedly connected to the second section; the adjustment motor is fixedly connected to the drive rack, and the adjustment motor is used to drive the second section to rotate.

7. The aviation oxygen cylinder welding processing device according to claim 1 is characterized in that: The welding sleeve is provided with an arc groove, and the welding sleeve is provided with a spring sheet for blocking the arc groove. The welding head passes through the spring sheet, and the spring sheet can be deformed so that the welding head can slide along the arc groove.

8. The aviation oxygen cylinder welding processing device according to claim 7 is characterized in that: A fixed guide rail is arranged in the welding groove, and a slide plate is also arranged in the welding groove. The slide plate is slidably arranged along the fixed guide rail, and the welding head is arranged through the slide plate. A fixed rack is arranged on the slide 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, and the auxiliary gear is always engaged with the fixed rack.

9. The aviation oxygen cylinder welding processing device according to claim 8, characterized in that: An auxiliary motor is arranged on the bracket, and the auxiliary motor is used for driving the oxygen cylinder to rotate around its own axis.

10. An aviation oxygen cylinder welding process, using the aviation oxygen cylinder welding device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, positioning the oxygen cylinder using the first support member; S2, positioning the welding sleeve using the second support member; S3, using the vacuum pump to extract the gas in the welding tank; 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 tank reaches a preset standard, use the welding head to weld the oxygen cylinder.

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