Vacuum welding equipment and welding method

Abstract

The invention discloses vacuum welding equipment and a welding method. The vacuum welding equipment comprises a base body, a carrier, a cover body device, an air extractor and a welding device. And the carrier is used for placing the workpiece and moving to a second position to be welded. The cover body device comprises an upper cover and a lower cover, the upper cover is configured to move to the position above the second position and be connected with the carrier, and the lower cover is configured to move to the position below the second position and be connected with the carrier. The lower cover and the carrier form a first containing cavity, the upper cover and the carrier form a second containing cavity, the first containing cavity is communicated with the second containing cavity, and the workpiece is located in the second containing cavity. The air extractor is connected with the upper cover or the lower cover, and the air extractor is configured to extract air in the first containing cavity and the second containing cavity. The welding device is arranged on the base body, and the welding device is configured to conduct welding operation on the workpiece. According to the vacuum welding equipment, the oxygen content in the containing cavity where the workpiece is located is reduced, so that the risk that the welding spot is oxidized is reduced, and the welding quality is improved.

Description

Technical Field

[0001] This application belongs to the technical field of welding equipment, and particularly relates to a vacuum welding equipment and a welding method. Background Art

[0002] At present, when soldering PCBA components of general consumer electronic products, the solder paste solder joints are extremely prone to oxidation, which in turn leads to poor wettability, and there is a risk of welding defects such as false soldering or virtual soldering, affecting their electrical performance. Summary of the Invention

[0003] In view of the above situation, it is necessary to provide a vacuum welding equipment to improve the oxidation phenomenon of solder joints and improve the welding quality.

[0004] An embodiment of this application provides a vacuum welding equipment, including a base body, a carrier, a cover body device, an air extraction device, and a welding device. The carrier, the cover body device, the air extraction device, and the welding device are arranged on the base body. The carrier is used to place the workpiece, and the carrier is configured to move between a first position and a second position. The first position is the position for placing or taking the workpiece, and the second position is the position for welding the workpiece. The cover body device includes an upper cover assembly and a lower cover assembly. The upper cover assembly includes an upper cover, and the upper cover is configured to move above the second position and connect the carrier located at the second position. The lower cover assembly includes a lower cover, and the lower cover is configured to move below the second position and connect the carrier located at the second position. The lower cover and the carrier form a first cavity, the upper cover and the carrier form a second cavity, the first cavity communicates with the second cavity, and the workpiece is located in the first cavity or the second cavity. The air extraction device is connected to the upper cover or the lower cover, and the air extraction device is configured to extract the gas in the first cavity and the second cavity. The welding device is arranged on the base body, and the welding device is configured to perform welding operations on the workpiece.

[0005] In the above-mentioned vacuum welding equipment, the lower cover and the upper cover are respectively connected to both side surfaces of the carrier to form a closed cavity for accommodating the workpiece. Through the air extraction operation of the air extraction device, the oxygen content in the cavity where the workpiece is located is reduced, and then the welding operation is carried out, which is beneficial to reducing the risk of oxidation of the solder joints and improving the welding quality.

[0006] In some embodiments of this application, the lower cover is arranged below the second position and is configured to move vertically closer to or away from the second position. The lower cover moves vertically closer to the second position and connects the carrier to form a first cavity, which is beneficial to improving the connection airtightness between the lower cover and the carrier. After the vacuum pumping operation, it is beneficial to maintain a low-oxygen environment, reduce the risk of oxidation of the solder joints, and improve the welding quality.

[0007] In some embodiments of the present application, the upper cover is configured to move laterally to move above the second position or move away from the upper region of the second position. The upper cover is further configured to move vertically closer to or away from the second position when located above the second position. The upper cover moves vertically closer to the second position and connects to the vehicle to form a second cavity, which is beneficial to improving the connection airtightness between the upper cover and the vehicle. After the vacuum pumping operation, it is beneficial to maintain a low-oxygen environment, reduce the risk of oxidation of the solder joints, and improve the welding quality.

[0008] In some embodiments of the present application, the vacuum welding device further includes an inflation device. The inflation device is connected to the upper cover or the lower cover and is configured to fill the first cavity and the second cavity with inert gas. After the air extraction device performs the air extraction operation, filling the first cavity and the second cavity with inert gas through the inflation device is beneficial to further create a low-oxygen or oxygen-free environment, thereby reducing the risk of oxidation of the solder joints and improving the welding quality.

[0009] In some embodiments of the present application, the welding device is configured to move laterally to move above the second position or move away from the upper region of the second position. By the lateral movement of the welding device, it is beneficial to reduce the risk of interference between different structures, and it is also beneficial to adjust the welding position or angle of the workpiece by moving, thereby improving the welding quality.

[0010] In some embodiments of the present application, the upper cover includes a perspective area, and the perspective area is a transparent or translucent structure; the welding device includes a heating device, and the heating device heats and welds the workpiece through the perspective area.

[0011] In some embodiments of the present application, the welding device further includes a temperature detection device. The temperature detection device is arranged facing the second position and is used to detect the welding temperature on the workpiece located at the second position; the temperature detection device is connected to the welding device, and the welding device is further configured to perform temperature compensation according to the temperature detected by the temperature detection device.

[0012] The embodiments of the present application further provide a welding method, which is applied to the vacuum welding device in any of the foregoing embodiments, and includes the steps: the vehicle arrives, the vehicle carrying the workpiece moves from the first position to the second position; the lower cover arrives, the lower cover moves upward and connects to the vehicle to form a first cavity; the upper cover arrives, the upper cover moves downward and connects to the vehicle to form a second cavity; vacuum pumping, the air extraction device performs an air extraction operation on the first cavity or the second cavity; welding, the welding device performs a welding operation.

[0013] In the above welding method, the lower cover and the upper cover are respectively connected to both side surfaces of the vehicle to form a closed cavity for accommodating the workpiece. Through the air extraction operation of the air extraction device, the oxygen content in the cavity where the workpiece is located is reduced, and then the welding operation is performed, which is beneficial to reducing the risk of oxidation of the solder joints and improving the welding quality.

[0014] In some embodiments of the present application, after the evacuation step, the following step is further included: filling an inert gas, and an inflation device fills the first cavity and the second cavity with the inert gas. After the evacuation by the evacuation device, filling the first cavity and the second cavity with the inert gas through the inflation device is beneficial to further create a low-oxygen or oxygen-free environment, thereby reducing the risk of oxidation of the solder joints and improving the welding quality.

[0015] In some embodiments of the present application, after the welding step, the following step is further included: evacuating again, and the evacuation device performs an evacuation operation on the first cavity or the second cavity. After the welding step, through the evacuation operation of the evacuation device, a negative pressure environment is formed in the cavity where the workpiece is located, which is beneficial to discharging the bubbles generated in the solder joints and further improving the welding quality. Description of the Drawings

[0016] Figure 1 It is a schematic structural view of a vacuum welding device in an embodiment of the present application.

[0017] Figure 2 It is a schematic structural view of the vacuum welding device from another angle in an embodiment of the present application.

[0018] Figure 3 It is a schematic structural view of the cover body device in the state where the carrier is in the first position in an embodiment of the present application.

[0019] Figure 4 It is a schematic structural view of the cover body device from another angle in the state where the carrier is in the first position in an embodiment of the present application.

[0020] Figure 5 It is a schematic structural view of the cover body device from yet another angle in the state where the carrier is in the first position in an embodiment of the present application.

[0021] Figure 6 It is a view of the cover body device in the lateral direction in the state where the carrier is in the first position in an embodiment of the present application.

[0022] Figure 7 It is a schematic structural view of the cover body device in the state where the carrier is in the second position in an embodiment of the present application.

[0023] Figure 8 It is a schematic structural view of the cover body device in the state where the carrier is in the second position, the lower cover is connected to the carrier, and the upper cover is located above the second position in an embodiment of the present application.

[0024] Figure 9 It is a view of the cover body device perpendicular to the lateral direction in the state where the carrier is in the second position, the lower cover is connected to the carrier, and the upper cover is located above the second position in an embodiment of the present application.

[0025] Figure 10 It is a view of the cover body device along the vertical direction perpendicular to the transverse direction when the vehicle is in the second position, the lower cover is connected to the vehicle, and the upper cover is connected to the vehicle in an embodiment of the present application.

[0026] Figure 11 It is a flowchart of a welding method in an embodiment of the present application.

[0027] Reference numerals

[0028] Vacuum welding equipment 100

[0029] Substrate 10

[0030] Carrier 20

[0031] Cover body device 30

[0032] Upper cover assembly 31

[0033] Upper cover 311

[0034] Second groove 3111

[0035] Perspective area 3112

[0036] Lower pressing air cylinder 312

[0037] Second transfer assembly 313

[0038] First linear guide pair 3131

[0039] Lower cover assembly 32

[0040] Lower cover 321

[0041] First groove 3211

[0042] First through hole 3212

[0043] Lifting air cylinder 322

[0044] First cavity 331

[0045] Second cavity 332

[0046] First transfer assembly 34

[0047] First part 341

[0048] Conveyor belt 3411

[0049] Second part 342

[0050] First limiting member 351

[0051] Second limiting member 352

[0052] Welding device 40

[0053] First position 51

[0054] Second position 52

[0055] Adjusting device 60

[0056] Driver 61

[0057] First lead screw nut pair 62

[0058] Third transfer assembly 71

[0059] Second lead screw nut pair 711

[0060] Second linear guiding pair 712

[0061] Fourth transfer assembly 72

[0062] Third linear guiding pair 722

[0063] Temperature detection device 81

[0064] Video monitoring device 82

[0065] Horizontal X

[0066] Longitudinal Y

[0067] Vertical Z

[0068] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0069] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0070] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present at the same time. When an element is considered to be "disposed" on another element, it can be directly disposed on the other element or there may be an intermediate element present at the same time.

[0071] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0072] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise specifically and clearly defined.

[0073] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Without conflict, the various embodiments in the present application can be combined with each other.

[0074] It should be noted that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only for illustrative purposes and should not constitute any limitation to the present application.

[0075] An embodiment of the present application provides a vacuum welding device, including a base body, a carrier, a cover body device, an air extraction device and a welding device. The carrier, the cover body device, the air extraction device and the welding device are arranged on the base body. The carrier is used for placing a workpiece, and the carrier is configured to move between a first position and a second position. The first position is the position for placing or taking the workpiece, and the second position is the position for welding the workpiece. The cover body device includes an upper cover assembly and a lower cover assembly. The upper cover assembly includes an upper cover, and the upper cover is configured to move above the second position and connect the carrier located at the second position. The lower cover assembly includes a lower cover, and the lower cover is configured to move below the second position and connect the carrier located at the second position. The lower cover and the carrier form a first cavity, and the upper cover and the carrier form a second cavity. The first cavity communicates with the second cavity, and the workpiece is located in the first cavity or the second cavity. The air extraction device is connected to the upper cover or the lower cover, and the air extraction device is configured to extract the gas in the first cavity and the second cavity. The welding device is arranged on the base body, and the welding device is configured to perform a welding operation on the workpiece.

[0076] In the above-mentioned vacuum welding device, the lower cover and the upper cover are respectively connected to two side surfaces of the carrier to form a sealed cavity for accommodating the workpiece. Through the air extraction operation of the air extraction device, the oxygen content in the cavity where the workpiece is located is reduced, and then the welding operation is performed, which is beneficial to reducing the risk of oxidation of the solder joints and improving the welding quality.

[0077] The following further describes the embodiments of the present application with reference to the drawings.

[0078] As Figure 1 and Figure 2As shown in the figure, an embodiment of the present application provides a vacuum welding device 100, which can be used for welding PCBA components of consumer electronic products. The vacuum welding device 100 includes a base 10, a carrier 20, a cover device 30, a pumping device (not shown in the figure), and a welding device 40. The carrier 20, the cover device 30, the pumping device, and the welding device 40 are arranged on the base 10.

[0079] The carrier 20 is used for placing workpieces. The carrier 20 is configured to move between a first position 51 and a second position 52. The first position 51 is the position for placing or taking out workpieces, and the second position 52 is the position for welding workpieces. When the carrier 20 is located at the first position 51, other mechanisms of the vacuum welding device 100 or workers can transfer the workpieces onto the carrier 20 or take out the workpieces on the carrier 20. When the carrier 20 is located at the second position 52, the welding device 40 of the vacuum welding device 100 can perform welding operations on the workpieces on the carrier 20.

[0080] The cover device 30 includes an upper cover assembly 31 and a lower cover assembly 32. The upper cover assembly 31 includes an upper cover 311, and the upper cover 311 is configured to move above the second position 52 and connect to the carrier 20 located at the second position 52. The lower cover assembly 32 includes a lower cover 321, and the lower cover 321 is configured to move below the second position 52 and connect to the carrier 20 located at the second position 52.

[0081] The lower cover 321 and the carrier 20 are connected to form a first cavity 331 (as Figure 10 shown), the upper cover 311 and the carrier 20 are connected to form a second cavity 332. The first cavity 331 communicates with the second cavity 332, and the workpiece is located in the first cavity 331 or the second cavity 332. In one embodiment, the workpiece is located in the second cavity 332.

[0082] The pumping device is connected to the upper cover 311 or the lower cover 321. The pumping device is configured to extract the gas in the first cavity 331 and the second cavity 332, so as to reduce the oxygen content in the closed environment where the workpiece is located.

[0083] The welding device 40 is arranged on the base 10, and the welding device 40 is configured to perform welding operations on the workpieces.

[0084] In the above-mentioned vacuum welding device 100, the lower cover 321 and the upper cover 311 are respectively connected to both side surfaces of the carrier 20 to form a closed cavity for accommodating the workpiece. Through the pumping operation of the pumping device, the oxygen content in the cavity where the workpiece is located is reduced, and then the welding operation is performed, which is beneficial to reducing the risk of oxidation of the solder joints and improving the welding quality.

[0085] In one embodiment, by improving the phenomenon of solder joint oxidation, it is not only beneficial to reduce the risk of poor soldering, but also beneficial to reduce the amount of flux used. Reducing the amount of flux used is not only beneficial to cost savings, but also beneficial to subsequent repair and maintenance.

[0086] In one embodiment, the carrier 20 is provided with a through hole (not shown in the figure), and the through hole communicates with the first cavity 331 and the second cavity 332, so that the first cavity 331 and the second cavity 332 communicate with each other.

[0087] As Figures 2 to 4 shown, in one embodiment, the cover device 30 further includes a first transfer assembly 34. The first transfer assembly 34 is disposed on the base 10, and the first transfer assembly 34 is used to carry and move the carrier 20, so that the carrier 20 can move between the first position 51 and the second position 52.

[0088] In one embodiment, the first transfer assembly 34 includes a first part 341 and a second part 342. The first part 341 and the second part 342 are arranged at intervals along the longitudinal direction Y. The first part 341 and the second part 342 cooperate with each other to jointly support and move the carrier 20, which is beneficial to improving the stability of the movement of the carrier 20, reducing the risk of relative movement between the workpiece and the carrier 20, and further improving the welding accuracy and quality.

[0089] In one embodiment, both the first part 341 and the second part 342 include a conveyor belt 3411. The conveyor belts 3411 on the first part 341 and the second part 342 rotate synchronously for transferring the carrier 20, which is beneficial to improving the stability of the movement of the carrier 20. In one embodiment, both the first part 341 and the second part 342 include a motor and a transmission assembly. The transmission assembly connects the motor and the conveyor belt 3411. In one embodiment, the motors and transmission assemblies for driving the conveyor belts 3411 to rotate are conventional settings in the art and will not be elaborated in this application.

[0090] In one embodiment, the cover device 30 further includes a first limiting member 351. The first limiting member 351 is disposed at a position close to the second position 52 for restricting the movement of the carrier 20 along the transverse direction X. When the carrier 20 is connected to the first limiting member 351, the carrier 20 is exactly located at the second position 52. By providing the first limiting member 351, it is beneficial to improve the accuracy of the carrier 20 at the second position 52 and beneficial to improving the welding quality.

[0091] In one embodiment, the vacuum welding equipment 100 further includes an adjusting device 60. The adjusting device 60 is connected to the first part 341 and the second part 342. The adjusting device 60 can adjust the distance between the first part 341 and the second part 342, and further adjust the distance between the conveyor belt 3411 on the first part 341 and the conveyor belt 3411 on the second part 342.

[0092] By adjusting the distance between the first part 341 and the second part 342, the first transfer assembly 34 can carry vehicles 20 and workpieces of different sizes. When the vehicle 20 and the workpiece are relatively small, the distance between the first part 341 and the second part 342 can be reduced through the adjusting device 60, so that the conveyor belts 3411 on the first part 341 and the conveyor belts 3411 on the second part 342 can be connected to carry the vehicle 20. When the vehicle 20 and the workpiece are relatively large, the distance between the first part 341 and the second part 342 can be increased through the adjusting device 60, so that the distance between the conveyor belts 3411 on the first part 341 and the conveyor belts 3411 on the second part 342 is increased to accommodate the larger vehicle 20 and avoid interference.

[0093] In one embodiment, the adjusting device 60 includes a driving member 61 and a first lead screw nut pair 62. The first lead screw nut pair 62 connects the driving member 61 to the first part 341 and the second part 342. The driving member 61 drives the lead screw in the first lead screw nut pair 62 to rotate, thereby adjusting the distance between the first part 341 and the second part 342, which is beneficial to improving the stability and accuracy of distance adjustment. In one embodiment, the setting manner of the first lead screw nut pair 62 is a conventional setting in the art, and will not be elaborated in this application.

[0094] In one embodiment, the driving member 61 is a motor, which is beneficial to improving the automation degree of the adjusting device 60, as well as improving the accuracy and stability of adjustment.

[0095] In one embodiment, the driving member 61 is a handle. The staff can hold the handle to rotate the lead screw in the first lead screw nut pair 62, which is convenient for operation and also beneficial to cost saving.

[0096] As Figure 3 、 Figure 5 and Figure 6 shown, in one embodiment, the lower cover assembly 32 is disposed below the second position 52, and the lower cover 321 is configured to move vertically along the Z-axis closer to or away from the second position 52. The lower cover 321 moves vertically along the Z-axis closer to the second position 52 and connects to the vehicle 20 to form a first cavity 331, which is beneficial to improving the connection airtightness between the lower cover 321 and the vehicle 20. After the vacuum pumping operation, it is beneficial to maintain a low-oxygen environment, reduce the risk of oxidation of the solder joints, and improve the welding quality.

[0097] In one embodiment, the lower cover assembly 32 further includes a lifting cylinder 322. The lifting cylinder 322 is located below the lower cover 321 and connects the base 10 and the lower cover 321. The lifting cylinder 322 is used to drive the lower cover 321 to move vertically along the Z-axis, so that the lower cover 321 connects to the vehicle 20 to form a first cavity 331, or separates the lower cover 321 from the vehicle 20.

[0098] In one embodiment, the number of the lifting cylinders 322 is two, and the two lifting cylinders 322 are arranged at intervals, which is beneficial to improving the stability of the moving lower cover 321 and the airtight reliability in the connection state between the lower cover 321 and the carrier 20, and is beneficial to creating a low-oxygen environment in the first cavity 331 and the second cavity 332, thereby improving the welding quality. In one embodiment, the number of the lifting cylinders 322 is three, four or more.

[0099] In one embodiment, the lower cover assembly 32 further includes a first seal (not shown in the figure), and the first seal is arranged at the upper end of the lower cover 321. When the lower cover 321 and the carrier 20 are connected to form the first cavity 331, the first seal connects the lower cover 321 and the carrier 20, which is beneficial to improving the airtightness between the lower cover 321 and the carrier 20. In one embodiment, the first seal is a sealing ring.

[0100] In one embodiment, a first groove 3211 is provided at the upper end of the lower cover 321, and at least a part of the first seal is located in the first groove 3211. The first groove 3211 plays a role in limiting the first seal, which is beneficial to reducing the risk of the first seal shifting, and reducing the risk of seal failure between the lower cover 321 and the carrier 20 caused by the shift of the first seal. The first groove 3211 can also play a role in protecting the first seal, and when the lower cover 321 is connected to the carrier 20, it reduces the risk of the first seal being over-compressed, which is beneficial to extending the service life of the first seal.

[0101] In one embodiment, the lower cover 321 is provided with a first through hole 3212, and the air extraction device is connected to the first through hole 3212. The air extraction device sucks the gas in the first cavity 331 through the first through hole 3212, so that a low-oxygen negative pressure environment is formed in the first cavity 331 and the second cavity 332.

[0102] In one embodiment, the air extraction device includes an air extraction pump and an air pipe. The air pipe connects the air extraction pump and the first through hole 3212, and the air extraction pump sucks the gas in the first cavity 331 through the air pipe.

[0103] As Figures 3 to 5 shown, in one embodiment, the upper cover 311 is configured to move along the transverse direction X to move above the second position 52 or move away from the upper area of the second position 52. The upper cover 311 is further configured to: when located above the second position 52, move along the vertical direction Z closer to or away from the second position 52. The upper cover 311 moves along the vertical direction Z closer to the second position 52 and connects to the carrier 20 to form the second cavity 332, which is beneficial to improving the connection airtightness between the upper cover 311 and the carrier 20. After the vacuum pumping operation, it is beneficial to maintain a low-oxygen environment, reduce the risk of oxidation of the solder joints, and improve the welding quality.

[0104] In one embodiment, the transverse direction X, the longitudinal direction Y and the vertical direction Z are perpendicular to each other in pairs.

[0105] In one embodiment, the upper cover assembly 31 further includes a downward pressing air cylinder 312. The downward pressing air cylinder 312 is connected to the base body 10 and the upper cover 311. The downward pressing air cylinder 312 is configured to drive the upper cover 311 to move along the vertical direction Z, so that the upper cover 311 is connected to the carrier 20 to form a second cavity 332, or to separate the upper cover 311 from the carrier 20.

[0106] In one embodiment, the number of the downward pressing air cylinders 312 is four. Two downward pressing air cylinders 312 are connected to the first part 341, and the other two downward pressing air cylinders 312 are connected to the second part 342. The connection lines of the four downward pressing air cylinders 312 are arranged in a rectangle, which is beneficial to improving the stability of moving the upper cover 311 and the airtight reliability in the state where the upper cover 311 is connected to the carrier 20, and is beneficial to creating a low-oxygen environment in the first cavity 331 and the second cavity 332, thereby improving the welding quality. In one embodiment, the number of the downward pressing air cylinders 312 is two, three, five or more.

[0107] In one embodiment, the upper cover assembly 31 further includes a second sealing member (not shown in the figure). The second sealing member is disposed at the lower end of the upper cover 311. When the upper cover 311 is connected to the carrier 20 to form the second cavity 332, the second sealing member connects the upper cover 311 and the carrier 20, which is beneficial to improving the airtightness between the upper cover 311 and the carrier 20. In one embodiment, the second sealing member is a sealing ring.

[0108] In one embodiment, a second groove 3111 is provided at the lower end of the upper cover 311, and at least a part of the second sealing member is located in the second groove 3111. The second groove 3111 plays a role in limiting the second sealing member, which is beneficial to reducing the risk of displacement of the second sealing member and the risk of sealing failure between the upper cover 311 and the carrier 20 caused by the displacement of the second sealing member. The second groove 3111 can also play a protective role for the second sealing member, reducing the risk of excessive compression of the second sealing member when the upper cover 311 is connected to the carrier 20, which is beneficial to extending the service life of the second sealing member.

[0109] In one embodiment, the upper cover assembly 31 further includes a second transfer assembly 313. The second transfer assembly 313 is connected to the downward pressing air cylinder 312 and the upper cover 311. The downward pressing air cylinder 312 drives the second transfer assembly 313 to move up and down, and the second transfer assembly 313 drives the upper cover 311 to move synchronously.

[0110] In one embodiment, the second transfer assembly 313 includes an air cylinder (not shown in the figure). The air cylinder is connected to the upper cover 311 and is configured to drive the upper cover 311 to move along the transverse direction X.

[0111] In one embodiment, the second transfer component 313 further includes a first linear guiding pair 3131. The first linear guiding pair 3131 is arranged along the transverse direction X and is connected to the downward pressing air cylinder 312 and the upper cover 311, and is used to guide the upper cover 311 to move along the transverse direction X, which is beneficial to improving the stability of the upper cover 311 moving along the transverse direction X. In one embodiment, the first linear guiding pair 3131 includes a guide rail and a slider, and the setting manner of the guide rail and the slider is a conventional setting in the art, which will not be elaborated in this application.

[0112] In one embodiment, the number of the second transfer components 313 is two. One second transfer component 313 is connected to the downward pressing air cylinder 312 arranged on the first part 341, and the other second transfer component 313 is connected to the downward pressing air cylinder 312 arranged on the second part 342, which is beneficial to improving the stability of the upper cover 311 moving along the transverse direction X.

[0113] As Figures 7 to 10 shown, in one embodiment, when the carrier 20 carries the workpiece and moves to the second position 52, the carrier 20 is located above the lower cover assembly 32. The lifting air cylinder 322 drives the lower cover 321 to move upward. The lower cover 321 is connected to the carrier 20 and forms a first cavity 331.

[0114] In one embodiment, the cover device 30 further includes a second limiting member 352. The second limiting member 352 is connected to the first part 341 or the second part 342. At least part of the second limiting member 352 is located above the second position 52 and is used to limit the upward movement of the carrier 20 along the vertical direction Z. After the lifting air cylinder 322 drives the lower cover 321 to move upward and connect to the carrier 20, the lifting air cylinder 322 continues to act, so that the lower cover 321 and the carrier 20 continue to rise until the carrier 20 connects to the second limiting member 352 and the lower cover 321 cannot rise any further.

[0115] Through the limitation of the second limiting member 352, it is not only beneficial to limit the carrier 20, but also beneficial to increase the mutual acting force between the lower cover 321 and the carrier 20 through the pressure acting on the carrier 20, thereby improving the airtightness effect between the lower cover 321 and the carrier 20.

[0116] In one embodiment, the number of the second limiting members 352 is two. One second limiting member 352 is arranged on the first part 341, and the other second limiting member 352 is arranged on the second part 342. The two second limiting members 352 cooperate to connect the two sides of the carrier 20 along the longitudinal direction Y, which is beneficial to improving the limiting effect on the carrier 20.

[0117] After the lifting cylinder 322 drives the lower cover 321 to move upward and connect to the carrier 20 to form the first cavity 331, the upper cover 311 moves horizontally along the X direction to above the second position 52 under the drive of the second transfer assembly 313. The pressing cylinder 312 drives the second transfer assembly 313 to descend, thereby driving the upper cover 311 to descend and connecting the upper cover 311 to the carrier 20 to form the second cavity 332, where the workpiece is located in the second cavity 332. At this time, the carrier 20 and the workpiece are in a state to be welded.

[0118] In one embodiment, the vacuum welding device 100 further includes an inflation device (not shown in the figure), the inflation device is connected to the upper cover 311 or the lower cover 321, and the inflation device is configured to inflate inert gas into the first cavity 331 and the second cavity 332.

[0119] After the air extraction device performs air extraction, the environment where the workpiece is located is a low-oxygen negative pressure environment, and then inert gas is filled into the first cavity 331 and the second cavity 332 through the inflation device, which is beneficial to further create a low-oxygen or oxygen-free environment, thereby reducing the risk of oxidation of the solder joints during the welding process and improving the welding quality.

[0120] In one embodiment, the inert gas is nitrogen, and the manufacturing cost of nitrogen is relatively low, which is beneficial to cost savings.

[0121] In one embodiment, the inflation device is connected to the lower cover 321. The lower cover 321 further includes a second through hole (not shown in the figure), the second through hole communicates with the first cavity 331, the inflation device is connected to the second through hole, and the inflation device fills inert gas into the first cavity 331 through the second through hole.

[0122] As Figure 1 、 Figure 2 and Figure 8 shown, in one embodiment, the welding device 40 is configured to move along the horizontal X direction and / or the vertical Y direction to move above the second position 52, and then perform a welding operation on the workpiece located at the second position 52. By the horizontal X direction and / or the vertical Y direction movement of the welding device 40, it is beneficial to reduce the risk of interference between different structures, and it is also beneficial to adjust the welding position or angle of the workpiece by moving, thereby improving the welding quality.

[0123] In one embodiment, the vacuum welding device 100 further includes a third transfer assembly 71, the third transfer assembly 71 is connected to the base 10 and the welding device 40, and the third transfer assembly 71 is used to drive the welding device 40 to move along the horizontal X direction.

[0124] In one embodiment, the third transfer assembly 71 includes a motor and a second lead screw nut pair 711. The second lead screw nut pair 711 connects the motor and the welding device 40. The motor drives the second lead screw nut pair 711 to drive the welding device 40 to move along the transverse direction X, which is beneficial to improving the accuracy and stability of the movement of the welding device 40 along the transverse direction X and is beneficial to improving the welding quality. In one embodiment, the connection manner between the motor and the second lead screw nut pair 711 is a conventional setting in the art and will not be elaborated in this application.

[0125] In one embodiment, the third transfer assembly 71 includes a cylinder (not shown in the figure). The cylinder connects the base body 10 and the welding device 40. The cylinder drives the welding device 40 to move along the transverse direction X, which is beneficial to improving the accuracy and stability of the movement of the welding device 40 along the transverse direction X and is beneficial to improving the welding quality.

[0126] In one embodiment, the third transfer assembly 71 further includes a second linear guiding pair 712. The second linear guiding pair 712 is arranged along the transverse direction X and connects the base body 10 and the welding device 40 for guiding the welding device 40 to move along the transverse direction X. By providing the second linear guiding pair 712, it is beneficial to improving the stability of the movement of the welding device 40 along the transverse direction X, and further improving the welding quality of the welding device 40. In one embodiment, the second linear guiding pair 712 includes a guide rail and a slider, and the setting manner of the guide rail and the slider is a conventional setting in the art and will not be elaborated in this application.

[0127] In one embodiment, the number of the second linear guiding pairs 712 is two. The two second linear guiding pairs 712 are arranged at intervals along the longitudinal direction Y, which is beneficial to further improving the stability of the movement of the welding device 40 along the transverse direction X and improving the welding quality of the welding device 40.

[0128] In one embodiment, the vacuum welding equipment 100 further includes a fourth transfer assembly 72. The fourth transfer assembly 72 connects the base body 10 and the third transfer assembly 71. The fourth transfer assembly 72 is used to drive the third transfer assembly 71 to move along the longitudinal direction Y so that the third transfer assembly 71 drives the welding device 40 to move synchronously along the longitudinal direction Y.

[0129] In one embodiment, the fourth transfer assembly 72 includes a motor and a third lead screw nut pair. The third lead screw nut pair connects the motor and the third transfer assembly 71. The motor drives the third lead screw nut pair to drive the third transfer assembly 71 to move along the longitudinal direction Y, which is beneficial to improving the accuracy and stability of the movement of the third transfer assembly 71 along the longitudinal direction Y, and further improving the accuracy and stability of the movement of the welding device 40 along the longitudinal direction Y, and is beneficial to improving the welding quality. In one embodiment, the connection manner between the motor and the third lead screw nut pair is a conventional setting in the art and will not be elaborated in this application.

[0130] In one embodiment, the fourth transfer assembly 72 includes a cylinder (not shown in the figure), the cylinder is connected to the base body 10 and the third transfer assembly 71, and the cylinder drives the third transfer assembly 71 to move along the longitudinal direction Y, which is beneficial to improving the accuracy and stability of the movement of the third transfer assembly 71 and the welding device 40 along the longitudinal direction Y, and is beneficial to improving the welding quality.

[0131] In one embodiment, the fourth transfer assembly 72 further includes a third linear guiding pair 722. The third linear guiding pair 722 is arranged along the longitudinal direction Y and is connected to the base body 10 and the third transfer assembly 71 for guiding the third transfer assembly 71 to move along the longitudinal direction Y. By providing the third linear guiding pair 722, it is beneficial to improve the stability of the movement of the third transfer assembly 71 and the welding device 40 along the longitudinal direction Y, and further improve the welding quality of the welding device 40. In one embodiment, the third linear guiding pair 722 includes a guide rail and a slider, and the setting manner of the guide rail and the slider is a conventional setting in the art, and will not be elaborated in this application.

[0132] In one embodiment, the number of the third linear guiding pairs 722 is two, and the two third linear guiding pairs 722 are arranged at intervals from each other along the transverse direction X, which is beneficial to further improving the stability of the movement of the third transfer assembly 71 and the welding device 40 along the longitudinal direction Y, and improving the welding quality of the welding device 40.

[0133] In one embodiment, the upper cover 311 includes a perspective area 3112, and the perspective area 3112 is a transparent or semi-transparent structure. The welding device 40 can perform welding operations on the workpiece through the perspective area 3112.

[0134] In one embodiment, the perspective area 3112 is a transparent glass, and the transparent glass is detachably assembled to the upper cover 311, which is convenient for manufacturing the upper cover 311, saves the manufacturing cost of the upper cover 311, and is convenient for maintenance.

[0135] In one embodiment, the welding device 40 includes a heating device (not shown in the figure), and the heating device performs heating welding on the workpiece through the perspective area 3112. In one embodiment, the heating device is used to emit infrared light, and the infrared light passes through the perspective area 3112 and irradiates on the workpiece to heat the workpiece, and then completes the welding operation.

[0136] In one embodiment, after the welding is completed, the air extraction device performs an air extraction operation again to form a negative pressure environment in the environment where the workpiece is located again, which is beneficial to discharging the bubbles generated in the solder joints and further improving the welding quality.

[0137] In one embodiment, the vacuum welding device 100 further includes a temperature detection device 81. The temperature detection device 81 is connected to the welding device 40 and is arranged facing the second position 52. When the carrier 20 carrying the workpiece and the cover device 30 are located at the preset position to be welded, the temperature detection device 81 can detect the temperature of the workpiece through the upper cover 311, and thus detect the welding process in real time.

[0138] In one embodiment, in addition to the function of detecting temperature, the temperature detection device 81 also has a feedback function. When the detected temperature is too low or too high, the temperature detection device 81 feeds back the temperature information to the welding device 40, so that the welding device 40 compensates the heating device, so that the workpiece is at a suitable welding temperature, which is beneficial to improving the welding quality.

[0139] In one embodiment, in addition to the function of detecting temperature, the temperature detection device 81 also has an alarm function. When the detected temperature is higher than the preset range, the temperature detection device 81 sends out an alarm message, so that the welding device 40 stops the welding operation, which is beneficial to reducing the influence of too high welding temperature on the product and on safety.

[0140] In one embodiment, the vacuum welding device 100 further includes a video monitoring device 82. The video monitoring device 82 is connected to the welding device 40 and is arranged facing the second position 52. When the carrier 20 carrying the workpiece and the cover device 30 are located at the preset position to be welded, the video monitoring device 82 can obtain the image information at the second position 52 and synchronously feed it back to the control room for the staff to perform visual monitoring, which is beneficial to improving the monitoring of the welding process.

[0141] As Figure 11 shown, the embodiment of the present application also provides a welding method, which is applied to the vacuum welding device 100 in any one of the foregoing embodiments, and includes the steps:

[0142] The carrier 20 arrives, and the carrier 20 carrying the workpiece moves from the first position 51 to the second position 52;

[0143] The lower cover 321 arrives, and the lower cover 321 moves upward and connects to the carrier 20 to form a first cavity 331;

[0144] The upper cover 311 arrives, and the upper cover 311 moves downward and connects to the carrier 20 to form a second cavity 332;

[0145] Evacuate, and the evacuation device evacuates the first cavity 331 or the second cavity 332;

[0146] Weld, and the welding device 40 performs a welding operation.

[0147] In the above welding method, the lower cover 321 and the upper cover 311 are respectively connected to both side surfaces of the carrier 20 to form a sealed cavity for accommodating the workpiece. Through the air extraction operation of the air extraction device, the oxygen content in the cavity where the workpiece is located is reduced, and then the welding operation is carried out, which is beneficial to reducing the risk of oxidation of the solder joints and improving the welding quality.

[0148] In one embodiment, after the vacuum pumping step, the following step is further included: filling with inert gas, and the gas filling device fills the first cavity 331 and the second cavity 332 with inert gas.

[0149] After the air extraction device performs air extraction, filling the first cavity 331 and the second cavity 332 with inert gas through the gas filling device is beneficial to further creating a low-oxygen or oxygen-free environment, thereby reducing the risk of oxidation of the solder joints and improving the welding quality.

[0150] In one embodiment, after the welding step, the following step is further included: performing vacuum pumping again, and the air extraction device performs an air extraction operation on the first cavity 331 or the second cavity 332.

[0151] After the welding step, through the air extraction operation of the air extraction device, a negative pressure environment is formed in the cavity where the workpiece is located, which is beneficial to discharging the bubbles generated in the solder joints and further improving the welding quality.

[0152] In one embodiment, during the welding step, the following step is further included: detecting temperature, and the temperature detection device 81 detects the welding temperature on the workpiece. Detecting the welding temperature of the workpiece through the temperature detection device 81 is beneficial to detecting the welding process in real time, improving the monitoring of the welding process, and is beneficial to improving the welding quality.

[0153] In one embodiment, during the welding step, the following step is further included: temperature compensation, and according to the temperature detected by the temperature detection device 81, the welding device 40 adjusts the welding temperature in real time. Through temperature compensation, it is beneficial to improve the welding quality of the workpiece.

[0154] As described above, only the specific embodiments of the present application are provided, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered within the disclosure scope of the present application.

Claims

1. A vacuum welding device, characterized in that, Comprising: Substrate; A carrier, provided on the substrate, for placing a workpiece, the carrier being configured to move between a first position and a second position, the first position being the position for placing or taking the workpiece, and the second position being the position for welding the workpiece; A cover device, including an upper cover assembly and a lower cover assembly, the upper cover assembly including an upper cover, the upper cover being configured to move above the second position and connect to the carrier at the second position, the lower cover assembly including a lower cover, the lower cover being configured to move below the second position and connect to the carrier at the second position; The lower cover and the carrier form a first cavity, the upper cover and the carrier form a second cavity, the first cavity communicates with the second cavity, and the workpiece is located in the first cavity or the second cavity; The vacuum welding device further includes: An air extraction device, connected to the upper cover or the lower cover, the air extraction device being configured to extract the gas in the first cavity and the second cavity; A welding device, provided on the substrate, the welding device being configured to perform welding operations on the workpiece.

2. The vacuum welding device according to claim 1, wherein The lower cover is provided below the second position and is configured to move vertically closer to or away from the second position.

3. The vacuum welding device according to claim 1, wherein The upper cover is configured to move horizontally to move above the second position or move away from the upper area of the second position; The upper cover is further configured to: when located above the second position, move vertically closer to or away from the second position.

4. The vacuum welding device according to claim 1, characterized in that The vacuum welding device further includes an inflation device, the inflation device being connected to the upper cover or the lower cover, the inflation device being configured to fill the first cavity and the second cavity with inert gas.

5. The vacuum welding device according to claim 1, wherein The welding device is configured to move horizontally and / or longitudinally to move above the second position or move away from the upper area of the second position.

6. The vacuum welding device according to claim 1, wherein The upper cover includes a perspective area, the perspective area being a transparent or semi-transparent structure; The welding device includes a heating device, and the heating device heats and welds the workpiece through the perspective area.

7. The vacuum welding equipment according to claim 6, characterized in that, The welding device further includes a temperature detection device, the temperature detection device being arranged facing the second position for detecting the welding temperature on the workpiece located at the second position; The temperature detection device is connected to the welding device, and the welding device is further configured to perform temperature compensation according to the temperature detected by the temperature detection device.

8. A welding method, characterized in that, Applied to a vacuum welding device according to any one of claims 1 to 7, including the steps of: The carrier is in place, and the carrier carrying the workpiece moves from the first position to the second position; The lower cover is in place, and the lower cover moves upward and connects to the carrier to form a first cavity; The upper cover is in place, and the upper cover moves downward and connects to the carrier to form a second cavity; Vacuum pumping, and the air extraction device performs a vacuum pumping operation on the first cavity or the second cavity; Welding, the welding device performs a welding operation.

9. The welding method according to claim 8, characterized in that, After the evacuation step, the method further includes the steps of: Filling with inert gas, the gas filling device fills the first cavity and the second cavity with inert gas.

10. The welding method according to claim 8, characterized in that, After the welding step, the method further includes the steps of: Evacuating again, the air extraction device performs an air extraction operation on the first cavity or the second cavity.

Images