An elastic compacting device and welding method suitable for automated welding of a skin

Abstract

The present application relates to a kind of flexible compaction device and welding method suitable for skin automated welding, belong to skin automated welding technical field, solve the problem that existing device is prone to skin injury.The flexible compaction device includes pressing plate and the flexible compaction component connected with it, the pressing plate is used to fix the flexible compaction component;The flexible compaction component is used to apply pressure to the place to be combined;The flexible compaction component includes elastic pressing part and elastic pressure regulating part, the elastic pressing part is placed in the place to be combined, the elastic pressure regulating part has elastic telescopic component, the elastic telescopic component provides adjustable pressing force to elastic pressing part by being in contact with the upper surface of elastic pressing part setting, with adjustable pressing force.The device is not prone to skin injury.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of skin automatic welding, in particular to an elastic compacting device and a welding method suitable for skin automatic welding. BACKGROUND

[0002] Aileron is one of the important components of an aircraft, and the preparation process of the aileron is usually to prepare a framework and a skin respectively, and then to combine the skin and the framework by laser welding. When the skin and the framework are laser welded, the skin and the framework must be tightly attached to achieve an ideal welding effect, so the skin and the framework need to be pressed tightly.

[0003] In the automatic welding process, the pressing force of the skin needs to be provided by the automatic welding tooling. At present, the skin automatic welding tooling clamp and the pressing method are as follows: the pressing plate is locally pressed by manually operating the bolts, which is complicated to operate, low in production efficiency, small in pressing area, and the pressing force cannot be measured and accurately adjusted, the attachment degree is poor, and the skin and the framework are easily pressed and injured or the skin is easily left un-welded. SUMMARY

[0004] In view of the above analysis, the embodiments of the present application aim to provide an elastic compacting device and a welding method suitable for skin automatic welding, to solve at least one of the following problems of the existing device: (1) the existing skin pressing method is complicated to operate and low in production efficiency; (2) the pressing area is small; (3) the skin and the framework have poor attachment; (4) the skin is easily pressed and injured.

[0005] The present application provides an elastic compacting device suitable for skin automatic welding, characterized in that the elastic compacting device comprises a pressing plate and an elastic compacting assembly connected thereto;

[0006] The pressing plate (13) is used to fix the elastic compacting assembly;

[0007] The elastic compacting assembly is used to apply a pressing force to the to-be-combined part;

[0008] The elastic compacting assembly comprises an elastic pressing part and an elastic pressure adjusting part, the elastic pressing part is placed at the to-be-combined part, and the elastic pressure adjusting part has an elastic expansion component, which provides a pressure-adjustable pressing force to the elastic pressing part by contacting the upper surface of the elastic pressing part.

[0009] Preferably, one end of the elastic pressing part is fixedly connected with the pressing plate through a fixed block, wherein the one end of the elastic pressing part is rotatably fixedly connected with the fixed block, the other end is used to press the to-be-combined part and can realize up-down swinging, and the fixed block is fixedly connected with the pressing plate.

[0010] Preferably, the upper surface of the elastic compression part is provided with a semispherical groove, and a semispherical pad matching the semispherical groove is arranged in the semispherical groove, and the elastic expansion part is in contact with the semispherical pad.

[0011] Preferably, the elastic pressure adjusting part comprises a positioning sleeve, a top screw and a disc spring group, and the elastic compression part comprises a swing arm and a compression arm.

[0012] The positioning sleeve is arranged on the upper surface of the swing arm, and the interior of the positioning sleeve comprises a cavity extending from top to bottom. The upper end of the positioning sleeve is provided with a threaded hole, and the lower end is open. A guide rod is arranged in the cavity, and the guide rod comprises a top surface and a vertical rod extending downward along the lower surface of the top surface. The guide rod can move up and down in the cavity. The outer periphery of the vertical rod is provided with a disc spring group extending from top to bottom. The top screw penetrates the threaded hole, and the lower end of the top screw is in contact with the top surface of the guide rod. The lower end of the disc spring group is in contact with the upper surface of the swing arm.

[0013] The swing arm is arranged on the upper surface of the compression arm. One end of the swing arm is connected with the fixed block, and the other end is connected with the compression arm in an up-down manner, and the other end can swing up and down.

[0014] The compression arm comprises a horizontal segment and an inclined segment inclined downward. The horizontal segment is arranged at an angle with the inclined segment. One end of the horizontal segment is connected with the swing arm in an up-down manner, and the other end of the horizontal segment is connected with one end of the inclined segment.

[0015] The positioning sleeve penetrates the upper surface and the lower surface of the compression plate. The outer periphery of the positioning sleeve is fixedly connected with the compression plate. The upper surface of the fixed block is fixedly connected with the compression plate.

[0016] Preferably, the fixed block is provided with a U-shaped groove. One end of the swing arm is inserted into the U-shaped groove. A pin shaft penetrates the two sides of the U-shaped groove and one end of the swing arm, so as to fix one end of the swing arm in the U-shaped groove.

[0017] Preferably, the lower surface of one end of the swing arm is not in contact with the bottom surface of the U-shaped groove, so that one end of the swing arm can rotate around the pin shaft, and the other end of the swing arm can swing up and down.

[0018] Preferably, the position where the swing arm is in contact with the disc spring group is provided with a semispherical groove. A semispherical pad matching the semispherical groove is arranged in the semispherical groove. The semispherical pad can slide in the semispherical groove. The lower end of the disc spring group is in contact with the upper surface of the semispherical pad.

[0019] Preferably, the semispherical groove and the semispherical pad are respectively provided with a through hole through which the vertical rod of the guide rod penetrates.

[0020] Preferably, the end face of the inclined section away from the horizontal section is an arc-shaped face, and a thin film pressure sensor is attached to the arc-shaped face.

[0021] In a second aspect, the application further provides a method for automatically welding a skin, which comprises providing elastic compression force to the joint to be combined by using the elastic compression device, and then welding.

[0022] Compared with the prior art, the application can achieve at least one of the following beneficial effects:

[0023] 1. The device can provide elastic compression force to the joint to be combined, and the elastic compression force can be adjusted by adjusting the elasticity of the elastic compression adjusting part through the elastic extension part, thereby adjusting the elastic compression force. The operation is simple and efficient, the joint to be combined can be tightly attached, and the device can prevent the joint to be combined from being damaged.

[0024] 2. The elastic compression device can place the end face of the inclined section away from the horizontal section at the joint of the skin and the framework, provide elastic compression force to the swing arm and the compression arm through the disc spring group, and then transmit the elastic compression force to the skin through the compression arm, thereby providing elastic compression force to the skin. The elastic compression force can not only tightly attach the skin to the framework, but also prevent the skin from being damaged.

[0025] 3. The end face of the inclined section away from the horizontal section is further provided with a thin film pressure sensor, which can monitor the elastic compression force applied to the skin by the elastic compression assembly, thereby further ensuring that the skin is tightly attached to the framework without being damaged and avoiding the phenomenon of air welding.

[0026] 4. The elastic compression device is provided with a hemispherical groove at the position where the swing arm contacts the disc spring group, and the hemispherical groove is provided with a hemispherical pad that can slide in the hemispherical groove. The upper surface of the hemispherical pad is always parallel to the lower end of the disc spring group when the swing arm rotates up and down, and the disc spring group is always vertically compressed, thereby ensuring the flexibility of the compression force provided by the elastic compression assembly and preventing the skin or the product framework from being damaged.

[0027] 5. The elastic compression device can be combined with a pressing plate control device, the pressing plate control device can control the pressing plate to drive the elastic compression assembly, the pressing end of the elastic compression assembly can be pressed on the skin, and the elasticity of the disc spring group can be controlled by adjusting the jack. The operation is simple and efficient.

[0028] 6. Multiple elastic compression assemblies can be arranged on one pressing plate, and multiple areas of the skin can be simultaneously subjected to elastic compression.

[0029] The technical solutions in the present application can be combined with each other to realize more preferred combination solutions. Other features and advantages of the present application will be described in the following description, and some advantages will become apparent from the description, or can be understood by implementing the present application. The objects and other advantages of the present application can be realized and obtained by the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated herein and constitute a part of the detailed description. The drawings illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application. In the drawings:

[0031] Figure 1 A perspective view of the elastic compacting assembly of the present application;

[0032] Figure 2 A sectional view of the elastic compacting assembly of the present application;

[0033] Figure 3A A perspective view of the hemispherical pad of the present application;

[0034] Figure 3B A sectional view of the hemispherical pad of the present application;

[0035] Figure 4 A perspective view of the elastic compacting device of the present application;

[0036] Figure 5 A perspective view of the elastic compacting device of the present application;

[0037] Figure 6 A sectional view of the elastic compacting device of the present application;

[0038] Figure 7 A perspective view of the elastic compacting device of the present application; Figure 6 A partial enlarged view of

[0039] LIST OF REFERENCE NUMERALS

[0040] 1 - positioning sleeve; 2 - top screw; 3 - fixing block; 301 - U-shaped groove; 302 - fixing hole; 4 - swing arm; 5 - pressing arm; 501 - horizontal section; 502 - inclined section; 6 - guide rod; 601 - top surface; 602 - vertical rod; 7 - disc spring set; 8 - pin shaft; 9 - hemispherical pad; 10 - countersunk screw; 11 - limiting screw; 12 - thin film pressure sensor; 13 - pressing plate; 14 - pressing plate control device; 1401 - bracket; 1402 - air cylinder; 1403 - movable rod; 15 - clasp spring; 16 - skin; 17 - framework; 18 - clamp. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present application will be described in detail below with reference to the drawings, wherein the drawings constitute a part of this application, and are used to explain the principles of the embodiments of the present application, but are not used to limit the scope of the present application.

[0042] The present application provides a flexible compacting device suitable for skin automatic welding, as shown in Figure 1 、 2 and 4, the flexible compacting device comprises a pressing plate 13 and a flexible compacting assembly connected therewith,

[0043] The pressing plate 13 is used to fix the flexible compacting assembly, and the pressing plate 13 can be directly arranged on a clamp of a skin automatic welding device, or can be connected with a driving mechanism to fix the pressing plate 13 at a suitable position through the driving mechanism;

[0044] The flexible compacting assembly is used to apply a compacting force to the to-be-bonded position;

[0045] The flexible compacting assembly comprises a flexible compacting part and a flexible pressure adjusting part, the flexible compacting part is arranged at the to-be-bonded position, and the flexible pressure adjusting part has an elastic expansion component, which provides a compacting force with adjustable pressure to the flexible compacting part through contact with the upper surface of the flexible compacting part.

[0046] In implementation, as shown in Figures 5-7 , the flexible compacting part of the flexible compacting assembly is arranged at the to-be-bonded position through the pressing plate 13, the elastic expansion component provides an elastic pressure to the flexible compacting part, and the elastic pressure is transmitted to the to-be-bonded position, so as to realize the elastic compacting force to the to-be-bonded position, and the elastic compacting force to the to-be-bonded position is adjusted by adjusting the acting force between the elastic expansion component of the flexible pressure adjusting part and the flexible compacting part.

[0047] Compared with the prior art, the device provided by the present application can realize the elastic compacting force to the to-be-bonded position, and the elasticity of the flexible pressure adjusting part can be adjusted through the elastic expansion component, so as to adjust the elastic compacting force, which is simple in operation and high in efficiency, can not only make the to-be-bonded position closely adhere, but also prevent the device from pressing the to-be-bonded position.

[0048] In the present application, the elastic pressure applied to the to-be-bonded position is adjustable, in order to realize the follow-up of the flexible compacting part in the pressure adjusting process of the flexible pressure adjusting part, one end of the flexible compacting part can be fixedly connected with the pressing plate 13 through a fixed block 3. Wherein, one end of the flexible compacting part is rotatably fixedly connected with the fixed block 3, and the other end is used to compact the to-be-bonded position and can realize up-down swinging, and the fixed block 3 is fixedly connected with the pressing plate 13.

[0049] In one embodiment, the upper surface of the elastic compression part is provided with a semispherical groove, and a semispherical pad 9 matching the semispherical groove is arranged in the semispherical groove. The elastic expansion part is in contact with the semispherical pad 9.

[0050] It is emphasized that the elastic expansion part provides adjustable compression force to the elastic compression part by being in contact with the semispherical pad 9 arranged in the semispherical groove on the upper surface of the elastic compression part. The semispherical pad 9 matching the semispherical groove is arranged in the semispherical groove, and the semispherical pad 9 can slide in the semispherical groove. The lower end of the elastic expansion part is in contact with the upper surface of the semispherical pad 9. The semispherical pad 9 is as shown in Figure 3A and 3B .

[0051] The semispherical pad 9 arranged in the semispherical groove can slide in the semispherical groove, and the semispherical pad 9 is in contact with the inner wall of the semispherical groove while having sliding freedom in multiple directions. This can ensure that the upper surface of the semispherical pad 9 is always in parallel compression with the lower end of the elastic expansion part when the elastic compression part swings up and down, and the elastic expansion part is always vertically compressed. This ensures the flexibility of the compression force provided by the elastic compression assembly and prevents crushing the parts to be combined, such as the skin or product framework.

[0052] In order to detect and control the compression force on the parts to be combined at any time, a thin film pressure sensor 12 is arranged on the contact surface of the elastic compression part and the parts to be combined. The thin film pressure sensor 12 can detect the compression force at any time, avoiding crushing the parts to be combined.

[0053] In a specific embodiment, the elastic compression part includes a swing arm 4 and a compression arm 5, and the elastic compression force adjusting part includes a positioning sleeve 1, a top screw 2 and a disc spring set 7.

[0054] Specifically, the positioning sleeve 1 is arranged on the upper surface of the swing arm 4. The positioning sleeve 1 includes a cavity extending from top to bottom inside the positioning sleeve 1. The upper end of the positioning sleeve 1 is provided with a threaded hole, and the lower end is open. A guide rod 6 is arranged in the cavity. The guide rod 6 includes a top surface 601 and a vertical rod 602 extending downward along the lower surface of the top surface 601. The guide rod 6 can move up and down in the cavity. The outer periphery of the vertical rod 602 is provided with a disc spring set 7 extending from top to bottom. The top screw 2 penetrates the threaded hole. The lower end of the top screw 2 is in contact with the top surface 601 of the guide rod 6. The lower end of the disc spring set 7 is in contact with the upper surface of the swing arm 4.

[0055] The swing arm 4 is arranged on the upper surface of the compression arm 5. One end of the swing arm 4 is connected with the fixed block 3, and the other end is connected with the compression arm 5 in up-down position. The end connected with the compression arm 5 is a free end, which can swing up and down with the movement of the swing arm 4.

[0056] The pressure arm 5 includes a horizontal section 501 and a downwardly inclined section 502. The horizontal section 501 and the inclined section 502 are set at an angle. One end of the horizontal section 501 is connected to the swing arm 4 in an upper and lower position, and the other end of the horizontal section 501 is connected to one end of the inclined section 502.

[0057] The positioning sleeve 1 penetrates the upper and lower surfaces of the pressure plate 13, and the outer periphery of the positioning sleeve 1 is fixedly connected to the pressure plate 13. The upper surface of the fixing block 3 is fixedly connected to the pressure plate 13.

[0058] It is understood that the set screw 2 is threadedly connected to the threaded hole, and the compression elasticity of the disc spring assembly 7 can be adjusted by rotating the set screw 2.

[0059] When implementing, such as Figures 5-7 As shown, the end face of the inclined section 502 of the elastic compaction component away from the horizontal section 501 is placed at the junction of the skin 16 and the frame 17 by the pressure plate 13. The top screw 2 is rotated, which in turn drives the top surface 601 of the guide rod 6 to press the disc spring assembly 7. The disc spring assembly 7 provides elastic pressure to the swing arm 4 and the pressure arm 5. The pressure arm 5 then transmits the elastic pressure to the skin 16, thereby realizing the elastic clamping force on the skin 16.

[0060] The device provided by the present invention can achieve elastic clamping force on the skin, and the elasticity of the disc spring assembly 7 can be adjusted by adjusting the set screw 2, thereby adjusting the elastic clamping force. It is simple to operate and highly efficient. It can not only make the skin 16 fit tightly with the frame 17, but also prevent the device from damaging the skin 16.

[0061] In one embodiment, the positioning sleeve 1 includes an upper section and a lower section. The outer periphery of the upper section is hexagonal prism, and the outer periphery of the lower section is cylindrical. The diameter of the upper section is larger than the diameter of the lower section. The lower section is fixedly connected to the pressure plate 13, and the lower end of the upper section presses against the upper surface of the pressure plate 13.

[0062] In one embodiment, the top surface 601 and the vertical rod 602 are both cylindrical, and the diameter of the top surface 601 is larger than the diameter of the vertical rod 602.

[0063] In one embodiment, the fixing block 3 is provided with a U-shaped groove 301, one end of the swing arm 4 is inserted into the U-shaped groove 301, and the pin 8 passes through both sides of the U-shaped groove 301 and one end of the swing arm 4 to fix one end of the swing arm 4 in the U-shaped groove 301.

[0064] For example, one end of the pin 8 is limited by a shoulder, and the other end is limited by a retaining ring 15.

[0065] In an embodiment, the lower surface of one end of the swing arm 4 is not in contact with the bottom surface of the U-shaped groove 301, so that the one end of the swing arm 4 can rotate around the pin shaft 8, so that the other end of the swing arm 4 can swing up and down. That is, the one end of the swing arm 4 is pivoted at the pin shaft 8, and the other end of the swing arm 4 can swing up and down.

[0066] In an embodiment, a limiting screw 11 is arranged between the lower surface of one end of the swing arm 4 and the bottom surface of the U-shaped groove 301.

[0067] Specifically, the limiting screw 11 is installed on the fixed block 3 through threaded connection, and the top end of the limiting screw 11 is in abutting contact with the swing arm 4. The limiting screw 11 is used to provide upward thrust to the swing arm 4, so as to form a pressing force between the swing arm 4 and the disc spring set 7.

[0068] In an embodiment, the upper surface of the fixed block 3 is provided with a fixing hole 302, and the fixed block 3 and the pressing plate 13 are fixedly connected through the fixing hole 302 and a bolt.

[0069] In an embodiment, a semispherical groove is arranged at the position where the swing arm 4 contacts the disc spring set 7, a semispherical pad 9 matched with the semispherical groove is arranged in the semispherical groove, the semispherical pad 9 can slide in the semispherical groove, and the lower end of the disc spring set 7 is in abutting contact with the upper surface of the semispherical pad 9. The semispherical pad 9 is as shown in Figure 3A and 3B

[0070] The semispherical pad 9 arranged in the semispherical groove can slide in the semispherical groove, is in contact with the inner wall of the semispherical groove, has sliding freedom in multiple directions, can ensure that the upper surface of the semispherical pad 9 is always in parallel pressing contact with the lower end of the disc spring set 7 when the swing arm 4 swings up and down, and can ensure that the disc spring set 7 is always vertically compressed, so as to ensure the flexibility of the pressing force provided by the elastic compacting assembly and prevent the skin or product framework from being crushed.

[0071] In order not to affect the downward sliding of the guide rod 6, the semispherical groove and the semispherical pad 9 are respectively provided with a through hole through which the vertical rod 602 of the guide rod 6 passes.

[0072] Exemplarily, the one end of the pressing arm 5 close to the fixed block 3 is spaced apart from the fixed block 3, and the semispherical groove is located above the spacing space.

[0073] Further, the through hole of the semispherical groove vertically penetrates the swing arm 4.

[0074] In an embodiment, the swing arm 4 and the pressing arm 5 are connected through a countersunk screw 10.

[0075] ​In the present application, the end face of the inclined section 502 away from the horizontal section 501 is used to contact the skin 16, thereby pressing the skin 16, i.e. the end face of the inclined section 502 away from the horizontal section 501 is a pressing end.

[0076] In an embodiment, the end face of the inclined section 502 away from the horizontal section 501 is an arc face, and a thin film pressure sensor 12 is attached to the arc face. The elastic compacting force of the elastic compacting assembly on the skin 16 is monitored by the thin film pressure sensor 12, further ensuring that the skin 16 is tightly attached to the framework 17 and avoiding the phenomenon of skin 16 being pressed and air welding.

[0077] In an embodiment, the angle between the inclined section 502 and the horizontal section 501 is 120-160 degrees.

[0078] In an embodiment, as shown in Figures 4-6 The elastic compacting device further comprises a pressing plate control device 14, and the pressing plate 13 is connected to the pressing plate control device 14. The pressing plate control device 14 controls the pressing plate 13 to drive the elastic compacting assembly, and the pressing end of the elastic compacting assembly is pressed on the skin 16.

[0079] Exemplarily, the pressing plate control device 14 can be fixed on a clamp 18 of a skin automatic welding device.

[0080] Specifically, as shown in Figure 6 The pressing plate control device 14 comprises a bracket 1401, a pneumatic cylinder 1402 and a movable rod 1403. The movable rod 1403 is movably arranged on the bracket 1401, and the pneumatic cylinder 1402 and the pressing plate 13 are respectively connected to the movable rod 1403, so that when the push rod of the pneumatic cylinder 1402 pushes the movable rod 1403, the pressing plate 13 can be driven to move.

[0081] Exemplarily, the pneumatic cylinder 1402 is installed on the bracket 1401, and the bracket 1401 is fixed on the clamp 18.

[0082] In an embodiment, a plurality of elastic compacting assemblies are arranged on the pressing plate 13, and a plurality of regions of the skin can be simultaneously elastically compacted.

[0083] In an embodiment, the elastic compacting device can comprise a plurality of pressing plates 13, and a plurality of elastic compacting assemblies are arranged on each pressing plate 13.

[0084] In order to reduce the space occupied by the pressing plate 13, the pressing plate 13 can be a special-shaped flat plate.

[0085] The elastic compacting device of the present application can provide reasonable compacting force for skin welding in the case of limited welding space, and the position of the skin is stable during the whole welding process, and the skin is not deformed after welding, so that the automatic welding achieves the expected effect.

[0086] In another aspect, the present application also provides a skin automatic welding method, characterized in that the method comprises: providing elastic compacting force to the to-be-bonded part by using the above-mentioned elastic compacting device, and then welding.

[0087] Specifically, when the elastic compacting device of the present application is used for skin automatic welding, after the skin 16 and the framework 17 are placed on the clamp 18, the push rod of the air cylinder 1402 pushes the movable rod 1403, the movable rod 1403 drives the pressing plate 13, and then the pressing plate 13 drives the elastic compacting assembly, so that one end of the pressure arm 5 provided with the diaphragm type pressure sensor 12 is placed at the bonding part of the skin 16 and the framework 17 and contacts the upper surface of the skin 16, the rotating top wire 2 drives the top surface 601 of the guide rod 6 to compact the disc spring set 7, the disc spring set 7 provides elastic pressure to the swing arm 4 and the pressure arm 5, and the pressure arm 5 transmits the elastic pressure to the skin 16, so as to realize the elastic compacting force of the skin 16.

[0088] Next, the elastic compacting device suitable for skin automatic welding of the present application will be further described through examples.

[0089] Example 1

[0090] The utility model provides an elastic compacting device suitable for skin automatic welding, and the elastic compacting device comprises a pressing plate and an elastic compacting assembly, the elastic compacting device comprises a pressing plate 13 and an elastic compacting assembly, the elastic compacting assembly comprises a positioning sleeve 1, a top pin 2, a fixed block 3, a swing arm 4 and a pressing arm 5, the positioning sleeve 1 is arranged on the upper surface of the swing arm 4, the inside of the positioning sleeve 1 comprises a cavity extending from top to bottom, the upper end of the positioning sleeve 1 is provided with a threaded hole, and the lower end is open, a guide rod 6 is arranged in the cavity, the guide rod 6 comprises a top surface 601 and a vertical rod 602 extending downward along the lower surface of the top surface 601, and the guide rod 6 can move up and down in the cavity, the outer periphery of the vertical rod 602 is provided with a disc spring group 7 extending from top to bottom, the top pin 2 penetrates the threaded hole, the lower end of the top pin 2 is in abutting contact with the top surface 601 of the guide rod 6, and the lower end of the disc spring group 7 is in abutting contact with the upper surface of the swing arm 4, the swing arm 4 is arranged on the upper surface of the pressing arm 5, one end of the swing arm 4 is connected with the fixed block 3, the other end is connected with the pressing arm 5 in up-down mode, and the other end can swing up and down, the pressing arm 5 comprises a horizontal section 501 and an inclined section 502 inclined downward, the horizontal section 501 is arranged at an angle with the inclined section 502, one end of the horizontal section 501 is connected with the swing arm 4 in up-down mode, and the other end of the horizontal section 501 is connected with one end of the inclined section 502, the positioning sleeve 1 penetrates the upper surface and the lower surface of the pressing plate 13, the outer periphery of the positioning sleeve 1 is fixedly connected with the pressing plate 13, and the upper surface of the fixed block 3 is fixedly connected with the pressing plate 13, the positioning sleeve 1 comprises an upper section and a lower section, the outer periphery of the upper section is hexagonal, the outer periphery of the lower section is cylindrical, the diameter of the upper section is larger than that of the lower section, the lower section is fixedly connected with the pressing plate 13, and the lower end of the upper section is in close contact with the upper surface of the pressing plate 13, the top surface 601 and the vertical rod 602 are cylindrical respectively, and the diameter of the top surface 601 is larger than that of the vertical rod 602, a U-shaped groove 301 is arranged on the fixed block 3, one end of the swing arm 4 is inserted into the U-shaped groove 301, a pin shaft 8 passes through the two sides of the U-shaped groove 301 and one end of the swing arm 4, and one end of the swing arm 4 is fixed in the U-shaped groove 301, one end of the pin shaft 8 is limited by a shaft shoulder, and the other end is limited by a snap spring 15, one end of the swing arm 4 is a fulcrum of the pin shaft 8, and the other end of the swing arm 4 can swing up and down, a limiting screw 11 is arranged between the lower surface of one end of the swing arm 4 and the bottom surface of the U-shaped groove 301, a fixed hole 302 is arranged on the upper surface of the fixed block 3, the fixed block 3 is fixedly connected with the pressing plate 13 through a bolt and the fixed hole 302, a semispherical groove is arranged at the position where the swing arm 4 contacts the disc spring group 7, a semispherical pad 9 matched with the semispherical groove is arranged in the semispherical groove, the semispherical pad 9 can slide in the semispherical groove, and the lower end of the disc spring group 7 is in abutting contact with the upper surface of the semispherical pad 9.The semispherical recess and the semispherical pad 9 are respectively provided with a through hole for the vertical rod 602 of the guide rod 6 to pass through. The pressing arm 5 is spaced apart from the fixed block 3 at one end close to the fixed block 3, and the semispherical recess is located above the spacing space. The through hole of the semispherical recess vertically penetrates the swing arm 4. The swing arm 4 and the pressing arm 5 are connected by a countersunk screw 10. The end face of the inclined section 502 away from the horizontal section 501 is an arc face, and a thin film pressure sensor 12 is attached to the arc face. The elastic compaction device further comprises a pressing plate control device 14, and the pressing plate 13 is connected with the pressing plate control device 14. The pressing plate control device 14 comprises a bracket 1401, a pneumatic cylinder 1402 and a movable rod 1403, the movable rod 1403 is movably arranged on the bracket 1401, and the pneumatic cylinder 1402 and the pressing plate 13 are respectively connected with the movable rod 1403, so that when the push rod of the pneumatic cylinder 1402 pushes the movable rod 1403, the pressing plate 13 can be driven to move. The pneumatic cylinder 1402 is installed on the bracket 1401, and the bracket 1401 is fixed on the clamp 18. The elastic compaction device can comprise 10 pressing plates 13, and 5 elastic compaction assemblies are arranged on each pressing plate 13. The pressing plate 13 can be a special-shaped flat plate.

[0091] The elastic compaction device of Example 1 is applied to the automatic welding of the skin, and the skin is pressed tightly without being pressed and without appearing empty welding.

[0092] Example 2

[0093] The elastic compaction device of this example is similar in structure to the elastic compaction device of Example 1, except that the end face of the inclined section away from the horizontal section is not provided with a thin film pressure sensor.

[0094] The elastic compaction device of Example 2 is applied to the automatic welding of the skin, and the skin is pressed tightly, but the elastic pressing force of the device on the skin cannot be detected in the process, the pressing force of each area on the skin is uneven, and the skin is slightly pressed or appears empty welding in some areas.

[0095] Example 3

[0096] The elastic compaction device of this example is similar in structure to the elastic compaction device of Example 1, except that the position where the swing arm contacts the disc spring group is not provided with a semispherical recess, and thus there is no semispherical pad, and the lower end of the disc spring group directly contacts the upper plane of the swing arm.

[0097] The elastic compaction device of Example 2 is applied to the automatic welding of the skin, and the skin is pressed tightly, but the elastic pressing force of the device on the skin cannot be detected in the process, the pressing force of each area on the skin is uneven, and the skin is slightly pressed or appears empty welding in some areas.

[0098] Embodiment 4

[0099] The elastic compacting device of the present embodiment is similar in structure to the elastic compacting device of Embodiment 1, and more specifically, the structure of the semi-spherical pad 9 is as shown in Figs. 5 and 6. Figure 3A and 3B The semi-spherical pad 9 is shaped like a semi-spherical segment, the lower end of the disc spring set 7 is in abutting contact with the upper surface of the semi-spherical pad 9, providing a support surface for compression of the disc spring set 7, and a vertical rod 602 of the guide rod 6 passes through a through hole in the semi-spherical pad 9, the diameter of the through hole being the same as that of the through hole vertically penetrating the swing arm 4, and the mating surfaces of the semi-spherical pad 9 and the swing arm 4 are both spherical surfaces. In this way, the elastic force of the disc spring set 7 can be uniformly transmitted to the swing arm 4, thereby ensuring the uniformity of the compacting force exerted by each elastic compacting assembly on each part of the skin, and avoiding deformation of the skin caused by uneven compacting force.

[0100] Embodiment 5

[0101] The present embodiment provides a skin welding method using the above-mentioned elastic compacting device, which comprises the following steps:

[0102] Placing the framework 17 on the clamp and covering the skin 16 on the upper surface of the framework 17;

[0103] Compact the framework 17 on the clamp by the framework compacting device;

[0104] Control the pressing plate 13 by the air cylinder 1402 to place the end face of the inclined section 502 of the elastic compacting assembly away from the horizontal section 501 at the joint of the skin 16 and the framework 17, and the upper surface of the semi-spherical pad 9 is always in parallel compacting with the lower end of the disc spring set 7 when the swing arm 4 swings up and down, so that the disc spring set 7 is always compressed vertically;

[0105] Rotate the top screw 2 to drive the top surface 601 of the guide rod 6 to compact the disc spring set 7, and provide elastic compacting force to the swing arm 4 and the pressing arm 5 through the disc spring set 7, and then the pressing arm 5 transmits the elastic compacting force to the skin 16 to realize elastic compacting of the skin 16;

[0106] Detect the elastic compacting force at any time by the diaphragm pressure sensor 12, if the real compacting force detected by the diaphragm pressure sensor 12 is within ±2.5% of the ideal data, no adjustment is needed, and if the real compacting force detected by the diaphragm pressure sensor 12 is not within ±2.5% of the ideal data, adjust the elastic compacting assembly to make the difference between the real compacting force and the ideal data within ±2.5%.

[0107] After the elastic compacting force is adjusted, weld the joint of the skin 16 and the framework 17.

[0108] The elasticity of the elastic pressure regulating part can be adjusted by the elastic telescopic component, thereby adjusting the elastic clamping force. It is simple to operate and highly efficient. It can not only make the joints fit tightly, but also prevent the device from damaging the joints.

[0109] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An elastic compacting device suitable for the automated welding of a skin, characterized in that, The elastic compacting device comprises a pressing plate (13) and an elastic compacting assembly connected with the pressing plate (13); The pressing plate (13) is used for fixing the elastic compacting assembly; The elastic compacting assembly is used for applying a compacting force to the place to be combined; The elastic compacting assembly comprises an elastic compacting part and an elastic compacting force adjusting part, the elastic compacting part is arranged at the place to be combined, and the elastic compacting force adjusting part is provided with an elastic telescopic part, the elastic telescopic part provides the elastic compacting part with a compacting force with adjustable pressure by being in contact with the upper surface of the elastic compacting part; One end of the elastic compacting part is fixedly connected with the pressing plate (13) through a fixing block (3), wherein the one end of the elastic compacting part is rotatably fixedly connected with the fixing block (3), and the other end is used for compacting the place to be combined and can realize up-down swinging, the fixing block (3) is fixedly connected with the pressing plate (13); The upper surface of the elastic compacting part is provided with a hemispherical groove, a hemispherical pad (9) matched with the hemispherical groove is arranged in the hemispherical groove, the elastic telescopic part is in contact with the hemispherical pad (9), the upper surface of the hemispherical pad is always in parallel compression with the lower end of the elastic telescopic part when the elastic compacting part swings up and down, and the elastic telescopic part is always vertically compressed; The elastic compacting part comprises a swing arm (4) and a pressing arm (5), the swing arm (4) is arranged above the pressing arm (5), one end of the swing arm (4) is connected with the fixing block (3), and the other end is connected with the pressing arm (5) in an up-down manner, and the end connected with the pressing arm (5) is a free end and can swing up and down with the movement of the swing arm (4).

2. The elastic compacting device according to claim 1, characterized in that The elastic compacting force adjusting part comprises a positioning sleeve (1), a top screw (2) and a disc spring group (7); The positioning sleeve (1) is arranged above the swing arm (4), the inside of the positioning sleeve (1) comprises a cavity extending from top to bottom, the upper end of the positioning sleeve (1) is provided with a threaded hole, and the lower end is open, a guide rod (6) is arranged in the cavity, the guide rod (6) comprises a top surface (601) and a vertical rod (602) extending downward along the lower surface of the top surface (601), and the guide rod (6) can move up and down in the cavity; the outer periphery of the vertical rod (602) is provided with a disc spring group (7) extending from top to bottom, the top screw (2) penetrates through the threaded hole, the lower end of the top screw (2) is in abutting contact with the top surface (601) of the guide rod (6), and the lower end of the disc spring group (7) is in abutting contact with the upper surface of the swing arm (4) through the hemispherical pad (9); The pressing arm (5) comprises a horizontal section (501) and an inclined section (502) inclined downward, the horizontal section (501) is arranged at an angle with the inclined section (502), one end of the swing arm (4) is connected with the horizontal section (501) in an up-down manner, and the other end of the horizontal section (501) is connected with one end of the inclined section (502); The positioning sleeve (1) penetrates through the upper surface and the lower surface of the pressing plate (13), the outer periphery of the positioning sleeve (1) is fixedly connected with the pressing plate (13), and the upper surface of the fixing block (3) is fixedly connected with the pressing plate (13).

3. An elastic compacting device according to claim 2, characterized in that The fixed block (3) is provided with a U-shaped groove (301), one end of the swing arm (4) is inserted into the U-shaped groove (301), the pin shaft (8) passes through both sides of the U-shaped groove (301) and one end of the swing arm (4), and one end of the swing arm (4) is fixed in the U-shaped groove (301).

4. The elastic compacting device of claim 3, wherein The lower surface of one end of the swing arm (4) is not in contact with the bottom surface of the U-shaped groove (301), so that one end of the swing arm (4) can rotate around the pin shaft (8), so that the other end of the swing arm (4) can swing up and down.

5. The elastic compacting device of claim 2, wherein The position where the swing arm (4) contacts the disc spring group (7) is provided with a hemispherical groove, a hemispherical pad (9) matched with the hemispherical groove is arranged in the hemispherical groove, the hemispherical pad (9) can slide in the hemispherical groove, and the lower end of the disc spring group (7) is in abutting contact with the upper surface of the hemispherical pad (9).

6. An elastic compacting device according to claim 5, characterized in that The hemispherical groove and the hemispherical pad (9) are respectively provided with through holes through which the vertical rod (602) of the guide rod (6) passes.

7. The elastic compacting device of claim 2, wherein The end face of the inclined section (502) away from the horizontal section (501) is an arc face, and a thin film pressure sensor (12) is attached to the arc face.

8. A method of automated welding of a skin, characterized in that, The method comprises: providing elastic compression force to the to-be-connected part by using the elastic compression device according to any one of claims 1-7, and then welding.

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