Steel shell battery shell cover welding detection equipment

Abstract

The invention discloses steel shell battery shell cover welding detection equipment which comprises a rack. The machine frame is provided with a bottom shell circulating conveying line, a bottom shell feeding carrying mechanical arm, a welding mechanism, a CCD camera, a welding jig conveying line, a shell cover carrying mechanical arm, a shell cover feeding mechanical arm, a detection carrying mechanical arm, a welding appearance detection mechanism, a transfer conveying platform, an air tightness detection mechanism, an air tightness detection carrying mechanical arm and a shell overturning and side erecting mechanism. The discharging carrying mechanical arm, the receiving tray conveying line, the welding mechanism and the CCD camera are all arranged on the gantry mounting support, and the welding pressing plate mechanism is arranged below the welding mechanism. The pressing plate mechanism comprises a spot welding pressing plate and a full welding pressing plate, and the spot welding pressing plate and the full welding pressing plate are controlled by a pressing plate transverse movement servo module to move. Spot welding, full welding, appearance detection after welding and air tightness detection of the battery bottom shell and the shell cover can be achieved, the welding and detection processes are completed in a full-automatic mode, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a manufacturing device for a steel-shell battery shell, and in particular to a welding detection device for a steel-shell battery shell cover. Background Art

[0002] In the production of steel shell batteries, there is a process of welding the shell cover to the bottom shell. In the existing process, the shell cover is generally welded by positioning the shell cover and the bottom shell with a positioning fixture, and then a laser is used to weld around the edge of the shell cover to achieve full welding. This direct full welding method will cause non-directional displacement of the shell cover during welding. The displacement of the shell cover will affect the airtightness of the shell cover welding. Moreover, the existing steel shell battery shell cover welding equipment generally does not have a post-welding detection function. Therefore, airtightness detection and welding appearance detection need to be performed on other equipment, resulting in the battery shell after welding. The need to be carried and transferred back and forth, resulting in low production efficiency. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, an object of the present invention is to provide a steel shell battery cover welding detection device.

[0004] The object of the present invention is achieved through the following technical solutions: a steel shell battery shell cover welding detection equipment, including a frame, the frame is provided with a bottom shell circulation conveyor line, a bottom shell loading and handling manipulator, a welding mechanism, a CCD camera, a welding jig conveyor line, a shell cover handling manipulator, a shell cover loading manipulator, a detection and handling manipulator, a welding appearance detection mechanism, a transfer conveying platform, an airtightness detection mechanism, an airtightness detection and handling manipulator, a shell flip side mechanism, a material unloading and handling manipulator and a material receiving tray conveyor line, the welding mechanism and the CCD camera are both arranged on a gantry mounting bracket, and a welding pressure plate mechanism is arranged below the welding mechanism; the pressure plate mechanism includes a spot welding pressure plate and a full welding pressure plate, and the spot welding pressure plate and the full welding pressure plate are both controlled to move by a pressure plate transverse movement servo module; The welding jig conveyor line is provided with a welding fixture, the bottom shell feeding and handling robot takes the bottom shell from the bottom shell circulation conveyor line, and transports the bottom shell to the welding fixture for fixing, the CCD camera takes a picture of the bottom shell on the welding fixture, the welding jig conveyor line transports the welding fixture to the shell cover assembly position to wait for the shell cover assembly, the shell cover feeding robot takes the shell cover from the shell cover tray, and transports it to the positioning platform for positioning, the shell cover handling robot takes the shell cover from the positioning platform, and fixes the shell cover on the bottom shell of the welding fixture, the pressure plate transverse movement servo module controls the spot welding pressure plate to press down on the shell cover for positioning, the welding mechanism performs spot welding on the shell cover, after the shell cover spot welding is completed, the pressure plate transverse movement servo module controls the full welding pressure plate to move to the top of the welding fixture, and presses down on the shell cover for positioning, and the welding mechanism performs full welding on the shell cover; The welded shell is conveyed to the unloading position by the welding jig conveyor line, the inspection and handling robot takes the shell from the unloading position of the welding jig conveyor line and places it on the inspection displacement conveyor line, the inspection displacement conveyor line conveys the shell to the position of the welding appearance inspection mechanism for appearance inspection, and the qualified products of the shell appearance inspection are transported to the transfer conveying platform, and the qualified products of the shell appearance inspection are transported to the NG conveyor line, the airtightness inspection and handling robot takes the shell from the transfer conveying platform, and places the shell on the airtightness inspection mechanism for airtightness inspection, and the qualified products of the shell airtightness inspection are transported by the airtightness inspection and handling robot to the shell flipping and side standing mechanism for 90-degree flipping and side standing, the unloading and handling robot takes the shell from the shell flipping and side standing mechanism, and places the side-standing shell on the receiving tray conveyed by the receiving tray conveyor line.

[0005] As an improvement of the steel shell battery shell cover welding detection equipment of the present invention, the spot welding plate is provided with a first groove, and a plurality of spot welding through holes are arranged at intervals at the bottom of the first groove. The laser spot welds the shell cover from the positions of the spot welding through holes in sequence, so that the shell cover is initially positioned on the bottom shell. The spot welding plate is installed on a first lifting slide, and the first lifting slide is controlled to move up and down by a first lifting cylinder. The first lifting cylinder is installed on a transverse slide, and the first lifting slide is connected to the transverse slide through a slide rail and a slider; a first elastic pressing block is provided at the bottom of the spot welding plate, and when the spot welding plate is pressed down, the first elastic pressing block is pressed on the shell cover, and the positions of the plurality of spot welding through holes are all arranged corresponding to the edges of the shell cover; the platen transverse servo module controls the transverse movement of the transverse slide; The full welding pressure plate is provided with a second groove, and the bottom of the second groove is provided with a full welding through hole. The laser fully welds the shell cover along the edge of the full welding through hole, so that the edge of the shell cover is completely welded to the bottom shell. The full welding pressure plate is installed on a second lifting slide plate, and the second lifting slide plate is controlled to lift and move by a second lifting cylinder. The second lifting cylinder is installed on the transverse sliding slide plate, and the second lifting slide plate is connected to the transverse sliding slide plate through a slide rail and a slider; a second elastic pressing block is provided at the bottom of the full welding pressure plate, and when the full welding pressure plate is pressed down, the second elastic pressing block is pressed on the shell cover.

[0006] As an improvement of the steel shell battery shell cover welding detection equipment of the present invention, the welding mechanism includes a welding transverse movement servo module and a welding lifting servo module. The welding transverse movement servo module controls the lateral movement of the welding lifting servo module. The welding lifting servo module controls the movement of the welding lifting plate. A laser head and a first CCD camera are provided on the welding lifting plate. Before the laser head welds, the first CCD camera takes pictures of the positions of the spot welding through holes and the full welding through holes to determine the welding position and welding trajectory.

[0007] As an improvement of the steel shell battery shell cover welding detection device of the present invention, the welding appearance detection mechanism includes a 3D scanner, and the 3D scanner is installed on the angle adjustment mechanism; The angle adjustment mechanism includes a first angle adjustment plate, which is installed on the base through an adjusting screw. A support seat is provided on the first angle adjustment plate, and a lifting adjustment plate is provided on the support seat. The lifting and lowering adjustment plate is adjusted by the lifting and lowering adjustment screws. The lifting and lowering adjustment plate is connected to the support seat through a slide rail and a slider. A rotating shaft is provided in the middle of the lifting and lowering adjustment plate, and a second angle adjustment screw is provided on the side of the lifting and lowering adjustment plate. The rotating shaft is connected to the second angle adjustment plate, and the second angle adjustment screw adjusts the angle of the second angle adjustment plate. The 3D scanner is installed on the second angle adjustment plate.

[0008] As an improvement of the steel shell battery shell cover welding detection equipment of the present invention, the detection displacement conveyor line includes an X-axis detection servo module and a Y-axis detection servo module, the X-axis detection servo module controls the movement of the Y-axis detection servo module, the Y-axis detection servo module controls the movement of a DD motor, and the DD motor controls the rotation of a positioning table, and the positioning table is provided with a shell positioning seat, a first elastic clamping block and a second elastic clamping block, and the shell positioning seat is provided with a positioning step, the first elastic clamping block is located on one side of the positioning step, and the second elastic clamping block is located on the other side of the positioning step, and the ends of the first elastic clamping block and the second elastic clamping block are both provided with guide arc surfaces.

[0009] As an improvement of the steel shell battery shell cover welding detection equipment of the present invention, the airtightness detection mechanism includes a mounting platform, a detection platform and a lateral movement control cylinder are provided on the mounting platform, a battery detection cavity is provided on the detection platform, the lateral movement control cylinder controls the movement of a lifting control cylinder, the lifting control cylinder controls the movement of a cover plate, the cover plate can cover the detection platform and seal the battery detection cavity, and a suction nozzle mounting bracket is also provided on the mounting platform, a nitrogen blowing nozzle mounting plate is provided on one side of the cover plate, a nitrogen blowing nozzle is provided on the nitrogen blowing nozzle mounting plate, a suction nozzle is provided on the suction nozzle mounting bracket, and a suction hole is provided at the bottom of the battery detection cavity, the suction hole is connected to the helium detector through a pipeline, and when the cover plate is opened, the nitrogen blowing nozzle blows nitrogen into the battery detection cavity, and the suction nozzle extracts the gas in the battery detection cavity; The nitrogen blowing nozzle mounting plate is provided with an arc-shaped hole, and the nitrogen blowing nozzle mounting plate can adjust the mounting angle through the arc-shaped hole. The exhaust nozzle mounting bracket includes a vertical pole and a horizontal pole, and the vertical pole is provided with a connecting seat, and the horizontal pole is passed through the connecting seat; The connecting seat is provided with a vertical rod through hole and a horizontal rod through hole, and the vertical rod through hole and the horizontal rod through hole are both provided with a notch, and the tightness of the notch is adjusted by a screw.

[0010] As an improvement of the steel shell battery shell cover welding detection device of the present invention, the mounting platform is also provided with an air needle control cylinder, the air needle control cylinder controls the movement of an air needle mounting plate, the air needle mounting plate is provided with an air needle, the air needle is located on one side of the detection platform, and the detection platform is provided with an air needle through-hole on one side corresponding to the air needle, the air needle penetrates into the battery detection cavity from the air needle through-hole, and penetrates into the battery shell cavity in the battery detection cavity; A sealing cover plate is provided on the bottom surface of the cover plate, and an annular sealing groove is provided on the side wall of the battery detection cavity, and the sealing cover plate can be inserted into the annular sealing groove; An elastic pressing block is provided in the middle of the sealing cover plate, and when the sealing cover plate is covered in the battery detection cavity, the elastic pressing block presses on the battery shell to position the battery; The mounting platform is also provided with a linear guide rail, the lifting control cylinder is mounted on a cylinder mounting plate, and the cylinder mounting plate is connected to the linear guide rail through a slider.

[0011] As an improvement of the steel shell battery shell cover welding detection equipment of the present invention, the welding fixture includes a positioning platform, and the positioning platform is provided with a bottom shell positioning groove, a fixed abutment block, a first movable abutment block, a second movable abutment block and a third movable abutment block. The bottom shell positioning groove is square, the fixed abutment block is located on one side of the length direction of the bottom shell positioning groove, the first movable abutment block is located on the other side of the length direction of the bottom shell positioning groove, the second movable abutment block is located on one side of the width direction of the bottom shell positioning groove, and the third movable abutment block is located on the other side of the width direction of the bottom shell positioning groove. The abutment top ends of the fixed abutment block, the first movable abutment block and the second movable abutment block are all provided with notches, and the bottom of the bottom shell positioning groove is provided with a vacuum adsorption hole.

[0012] As an improvement of the steel shell battery shell cover welding detection equipment of the present invention, it also includes a bottom plate, the bottom plate is connected to the positioning platform through a plurality of support columns, the bottom plate is provided with a clamping cylinder, the positioning platform is provided with a first abutting cylinder for controlling the movement of the first movable abutting block, and the bottom of the positioning platform is provided with a second abutting cylinder for controlling the movement of the second movable abutting block; The first movable abutting block is installed on the card slot of the first sliding plate, the bottom of the first sliding plate is connected to the first sliding rail through the first sliding block, a first connecting plate is provided on one side of the first sliding plate, and the first connecting plate is connected to the piston rod of the first abutting cylinder, the card slot is set to two, the first movable abutting blocks are two, and the two first movable abutting blocks are respectively installed on one of the card slots; Two first guide rods are arranged at one end of the first sliding plate, the ends of the two first guide rods are connected to the first limit plate, a first limit screw is passed through the first limit plate, one end of the first limit screw is fixedly connected to the first positioning seat, two first limit screws are screwed on the first limit screw, and the first limit plate is located between the two first limit screws; The second movable abutting block is installed on the card slot of the second sliding plate, the bottom of the second sliding plate is connected to the second slide rail through the second sliding block, the middle of the second sliding plate is provided with a second connecting plate, and the second connecting plate is connected to the piston rod of the second abutting cylinder; Two second guide rods are arranged at one end of the second sliding plate, the ends of the two second guide rods are connected to the second limit plate, a second limit screw is passed through the second limit plate, one end of the second limit screw is fixedly connected to the second positioning seat, two second limit screws are screwed on the second limit screw, and the second limit plate is located between the two second limit screws; The third movable abutting block is installed on the third sliding plate, the bottom of the third sliding plate is slidably connected to the third sliding rail through the third sliding block, one end of the third sliding plate is provided with a spring hole, a spring is provided in the spring hole, one side of the third sliding plate is provided with a roller seat, and a roller is provided on the roller seat; The positioning platform is also provided with a spring adjustment seat, the spring adjustment seat is arranged corresponding to the third movable abutting block, a plurality of screw holes are arranged at intervals on the spring adjustment seat, one end of the spring extends into the screw hole, an adjustment screw is screwed into the screw hole, and the elastic force of the spring can be adjusted by rotating the adjustment screw; A mounting plate is provided at the piston rod end of the clamping cylinder, and an clamping top block is fixedly mounted on the mounting plate. The clamping top block is provided with an inclined surface, and the inclined surface is in contact with the roller. When the clamping cylinder controls the clamping top block to move upward, the inclined surface can push the third movable abutting block to move and compress the spring. When the clamping cylinder is reset, the spring pushes the third movable abutting block to move and abut against the shell cover.

[0013] As an improvement of the steel shell battery shell cover welding detection equipment of the present invention, the shell flip side mechanism includes a flip cylinder mounting support seat, the flip cylinder mounting support seat is provided with a flip cylinder, the flip cylinder controls a flip platform to rotate, the flip angle of the flip platform is 90 degrees, and a plurality of vacuum adsorption holes are arranged at intervals on the flip platform; The tilt cylinder mounting support is fixed on a moving plate, and the moving plate is controlled to move by a moving control servo module.

[0014] The beneficial effects of the present invention are as follows: the present invention can realize spot welding, full welding, appearance inspection after welding and air tightness inspection of the battery bottom shell and shell cover, and the welding and inspection process is completed automatically, thereby improving production efficiency. During welding, the edge of the shell cover is fixed by spot welding to prevent the shell cover from moving during full welding, thereby improving welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a first directional stereogram of the present invention; Figure 2 is a second directional stereogram of the present invention; Figure 3 is a top view of the present invention; Figure 4 is a three-dimensional diagram of the welding mechanism of the present invention; Figure 5 It is a structural schematic diagram of the welding pressing plate mechanism of the present invention; Figure 6 It is a schematic diagram of the installation structure of multiple welding appearance detection mechanisms and detection displacement conveyor lines of the present invention; Figure 7 It is a front perspective view of a single welding appearance detection mechanism of the present invention; Figure 8 It is a back perspective view of a single welding appearance detection mechanism of the present invention; Fig. 9 It is a schematic diagram of the positioning platform structure of the present invention; Fig.10 is a three-dimensional diagram of the airtightness detection mechanism of the present invention; Fig.11 It is a front view of the airtightness detection mechanism of the present invention; Fig.12 It is a schematic diagram of the structure of a single detection platform of the present invention; Fig.13 is a front view of a single detection platform of the present invention; Fig.14 is a top view of a single detection platform of the present invention; Fig.15 is a three-dimensional diagram of a welding fixture of the present invention; Fig.16is a top view of the welding fixture of the present invention; Fig.17 yes Fig.16 A in the enlarged view; Fig.18 It is a three-dimensional diagram of the housing flipping and side-standing mechanism of the present invention; DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0019] like Figure 1-Figure 18 As shown, a steel shell battery shell cover welding detection equipment includes a frame 1, on which is provided a bottom shell circulation conveyor line 2, a bottom shell loading and handling robot 3, a welding mechanism 4, a CCD camera 5, a welding fixture conveyor line 6, a shell cover handling robot 7, a shell cover loading and handling robot 8, a detection and handling robot 9, a welding appearance detection mechanism 10, a transfer conveying platform 11, an airtightness detection mechanism 12, an airtightness detection and handling robot 13, a shell flipping and side standing mechanism 14, a blanking and handling robot 15 and a receiving tray conveyor line 16, the welding mechanism 4 and the CCD camera 5 are both arranged on a gantry mounting bracket 17, and a welding pressure plate mechanism 18 is provided below the welding mechanism 4; the pressure plate mechanism 18 includes a spot welding pressure plate 19 and a full welding pressure plate 20, and the spot welding pressure plate 19 and the full welding pressure plate 20 are both controlled to move by a pressure plate transverse movement servo module 21.

[0020] A welding fixture 22 is provided on the welding jig conveyor line 6. The bottom shell loading and transporting robot 3 takes the bottom shell from the bottom shell circulation conveyor line 2, and transports the bottom shell to the welding fixture 22 for fixing. The CCD camera 5 takes a picture of the bottom shell on the welding fixture 22. The welding jig conveyor line 6 transports the welding fixture 22 to the shell cover assembly position to wait for the shell cover assembly. The shell cover loading robot 8 takes the shell cover from the shell cover tray 23 and transports it to the positioning platform 24 for positioning. The shell cover transporting robot 7 takes the shell cover from the positioning platform 24 and fixes the shell cover on the bottom shell of the welding fixture 22. The pressure plate transverse movement servo module 21 controls the spot welding pressure plate 19 to press down on the shell cover for positioning, and the welding mechanism 4 spot welds the shell cover. After the spot welding of the shell cover is completed, the pressure plate transverse movement servo module 21 controls the full welding pressure plate 20 to move to the top of the welding fixture 22, and presses down on the shell cover for positioning, and the welding mechanism 4 full welds the shell cover.

[0021] The welded shell is conveyed to the unloading position by the welding jig conveyor line 6, the inspection and handling robot 9 takes the shell from the unloading position of the welding jig conveyor line 6 and places it on the inspection displacement conveyor line 25, the inspection displacement conveyor line 25 conveys the shell to the position of the welding appearance inspection mechanism 10 for appearance inspection, and the qualified products of the shell appearance inspection are conveyed to the transfer conveying platform 11, and the qualified products of the shell appearance inspection are conveyed to the NG conveyor line 26, the airtightness inspection and handling robot 13 takes the shell from the transfer conveying platform 11, and places the shell on the airtightness inspection mechanism 12 for airtightness inspection, and the qualified products of the shell airtightness inspection are conveyed by the airtightness inspection and handling robot 13 to the shell flipping and side standing mechanism 14 for 90-degree flipping and side standing, and the unloading and handling robot 15 takes the shell from the shell flipping and side standing mechanism 14, and places the side-standing shell on the receiving tray conveyed by the receiving tray conveyor line 16.

[0022] Preferably, a first groove 191 is provided on the spot welding plate 19, and a plurality of spot welding through holes 192 are provided at intervals at the bottom of the first groove 191. The laser spot welds the shell cover from the positions of the spot welding through holes 192 in sequence, so that the shell cover is initially positioned on the bottom shell. The spot welding plate 19 is installed on a first lifting slide 193, and the first lifting slide 193 is controlled to move up and down by a first lifting cylinder 194. The first lifting cylinder 194 is installed on a transverse slide 195, and the first lifting slide 193 is connected to the transverse slide 195 through a slide rail and a slider; a first elastic pressing block is provided at the bottom of the spot welding plate 19, and when the spot welding plate 19 is pressed down, the first elastic pressing block is pressed on the shell cover, and the positions of the plurality of spot welding through holes 192 are all arranged corresponding to the edge of the shell cover; the platen transverse servo module 21 controls the transverse movement of the transverse slide 195; A second groove 201 is provided on the full welding plate 20, and a full welding through hole 202 is provided at the bottom of the second groove 201. The laser performs full welding on the shell cover along the edge of the full welding through hole 202, so that the edge of the shell cover is completely welded to the bottom shell. The full welding plate 20 is installed on the second lifting slide 203, and the second lifting slide 203 is controlled by the second lifting cylinder 204 to move up and down. The second lifting cylinder 204 is installed on the transverse slide 195, and the second lifting slide 203 is connected to the transverse slide 195 through a slide rail and a slider; a second elastic pressing block is provided at the bottom of the full welding plate 20, and when the full welding plate is pressed down, the second elastic pressing block is pressed on the shell cover. An exhaust duct 196 is also provided on the transverse slide 195, and an exhaust nozzle 197 is provided at the end of the exhaust duct 196. The exhaust nozzle 197 is located on the upper side of the second groove 201.

[0023] Preferably, the welding mechanism 4 includes a welding transverse movement servo module 41 and a welding lifting servo module 42. The welding transverse movement servo module 41 controls the lateral movement of the welding lifting servo module 42. The welding lifting servo module 42 controls the movement of the welding lifting plate 43. The welding lifting plate 43 is provided with a laser head 44 and a first CCD camera 45. Before welding, the laser head 44 uses the first CCD camera 45 to take pictures of the positions of the spot welding through holes 192 and the full welding through holes 202 to determine the welding position and welding trajectory.

[0024] Preferably, the welding appearance detection mechanism 10 includes a 3D scanner 101, and the 3D scanner 101 is installed on the angle adjustment mechanism 27; The angle adjustment mechanism 27 includes a first angle adjustment plate 271, which is installed on the base 273 through an adjusting screw 272. The first angle adjustment plate 271 is provided with a support seat 274, and the support seat 274 is provided with a lifting adjustment plate 275. The lifting and lowering adjustment plate 275 is adjusted by lifting and lowering adjustment screws 276. The lifting and lowering adjustment plate 275 is connected to the support seat 274 through a slide rail and a slider. A rotating shaft 277 is provided in the middle of the lifting and lowering adjustment plate 275, and a second angle adjustment screw 278 is provided on the side of the lifting and lowering adjustment plate 275. The rotating shaft 277 is connected to the second angle adjustment plate 279. The second angle adjustment screw 278 adjusts the angle of the second angle adjustment plate 279, and the 3D scanner 101 is installed on the second angle adjustment plate 279.

[0025] Preferably, the detection displacement conveyor line 25 includes an X-axis detection servo module 251 and a Y-axis detection servo module 252, the X-axis detection servo module 251 controls the movement of the Y-axis detection servo module 252, the Y-axis detection servo module 252 controls the movement of a DD motor 253, the DD motor 253 controls the rotation of a positioning platform 254, the positioning platform 254 is provided with a shell positioning seat 255, a first elastic clamping block 256 and a second elastic clamping block 257, the shell positioning seat 255 is provided with a positioning step, the first elastic clamping block 256 is located on one side of the positioning step, and the second elastic clamping block 257 is located on the other side of the positioning step, and the ends of the first elastic clamping block 256 and the second elastic clamping block 257 are both provided with guide arc surfaces.

[0026] Preferably, the airtightness detection mechanism 12 includes an installation platform 121, on which a detection platform 122 and a transverse movement control cylinder 123 are provided, on which a battery detection cavity 124 is provided, the transverse movement control cylinder 123 controls the movement of a lifting control cylinder 125, and the lifting control cylinder 125 controls the movement of a cover plate 126, and the cover plate 126 can cover the detection platform 122 and seal the battery detection cavity 124, and on the installation platform 124, a vacuum nozzle mounting bracket 127 is also provided, and a nitrogen blowing nozzle mounting plate 128 is provided on one side of the cover plate 126, a nitrogen blowing nozzle 129 is provided on the nitrogen blowing nozzle mounting plate 128, and a vacuum nozzle 1210 is provided on the vacuum nozzle mounting bracket 127. When the battery shell inspection is completed, the lifting control cylinder 125 controls the cover plate 126 to rise, and the transverse movement control cylinder 123 controls the cover plate 126 to move transversely, and the battery inspection cavity 124 is opened, and the nitrogen blowing nozzle 129 blows nitrogen into the battery inspection cavity 124. While the nitrogen blowing nozzle 129 blows nitrogen, the exhaust nozzle 1210 starts to exhaust gas to extract the residual helium in the battery inspection cavity 124, so that the next battery shell inspection will not be affected by the helium leaked from the previous battery shell and cause inaccurate inspection.

[0027] Preferably, when the cover plate 126 is opened, the nitrogen blowing nozzle 129 blows nitrogen into the battery detection cavity 124 , and the exhaust nozzle 1210 extracts the gas in the battery detection cavity 124 .

[0028] Preferably, an arc hole 1281 is provided on the nitrogen blowing nozzle mounting plate 128, and the nitrogen blowing nozzle mounting plate 128 can adjust the mounting angle through the arc hole 1281. The arc hole 1281 can adjust the blowing angle of the nitrogen blowing nozzle 129, so that the nitrogen can quickly blow away the helium in the battery detection cavity.

[0029] Preferably, the exhaust nozzle mounting bracket 127 includes a vertical rod 1271 and a horizontal rod 1272, the vertical rod 1271 is provided with a connecting seat 1273, and the horizontal rod 1272 is passed through the connecting seat 1273; The connecting seat 1273 is provided with a vertical rod through hole and a horizontal rod through hole, and both the vertical rod through hole and the horizontal rod through hole are provided with a notch, and the tightness of the notch is adjusted by a screw.

[0030] Preferably, a suction hole 1211 is provided at the bottom of the battery detection cavity 124, and the suction hole 1211 is connected to a helium detector 1213 through a pipe 1212. The helium detector 1213 detects whether the extracted gas contains helium. If it contains helium, it indicates that the battery shell has leakage and poor sealing.

[0031] Preferably, an air needle control cylinder 1214 is also provided on the installation platform 121, and the air needle control cylinder 1214 controls the movement of an air needle mounting plate 1215. An air needle 1216 is provided on the air needle mounting plate 1215, and the air needle 1216 is located on one side of the detection platform 122. An air needle through-hole 1217 is provided on the side of the detection platform 122 corresponding to the air needle. The air needle 1216 penetrates into the battery detection cavity 124 through the air needle through-hole 1217, and then penetrates into the battery shell cavity in the battery detection cavity.

[0032] Preferably, a sealing cover plate 1261 is provided on the bottom surface of the cover plate 126 , and an annular sealing groove 1241 is provided on the side wall in the battery detection cavity 124 , and the sealing cover plate 1261 can be snapped into the annular sealing groove 1241 .

[0033] Preferably, an elastic pressing block 1262 is provided in the middle of the sealing cover plate 1261 , and when the sealing cover plate 1261 is covered in the battery detection cavity 124 , the elastic pressing block 1262 presses on the battery casing to position the battery.

[0034] Preferably, a linear guide rail 1218 is also provided on the mounting platform 121, and the lifting control cylinder 125 is installed on a cylinder mounting plate 1251, and the cylinder mounting plate 1251 is connected to the linear guide rail 1218 through a slider.

[0035] Preferably, the welding fixture 22 includes a positioning platform 221, on which a bottom shell positioning groove 222, a fixed abutting block 223, a first movable abutting block 224, a second movable abutting block 225 and a third movable abutting block 226 are provided. The bottom shell positioning groove 222 is square, the fixed abutting block 223 is located on one side of the bottom shell positioning groove 222 in the length direction, the first movable abutting block 224 is located on the other side of the bottom shell positioning groove 222 in the length direction, the second movable abutting block 225 is located on one side of the bottom shell positioning groove 222 in the width direction, and the third movable abutting block 226 is located on the other side of the bottom shell positioning groove 222 in the width direction. Notches 227 are provided at the abutting tops of the fixed abutting block 223, the first movable abutting block 224 and the second movable abutting block 225. The battery bottom shell is placed in the bottom shell positioning groove 222, and negative pressure is provided through the vacuum adsorption hole to position the battery bottom shell in the bottom shell positioning groove 222, and the shell cover is covered on the battery bottom shell, and the fixed abutting block 223, the first movable abutting block 224, the second movable abutting block 225 and the third movable abutting block 226 jointly position the shell cover, and the laser head performs spot welding along the position of the notch 227. After the spot welding is completed, the first movable abutting block 224, the second movable abutting block 225 and the third movable abutting block 226 are reset, and the laser head welds a circle along the edge of the shell cover to achieve full welding.

[0036] Preferably, a vacuum adsorption hole is provided at the bottom of the bottom shell positioning groove 222. The vacuum adsorption hole is connected to a vacuum pumping device through a hose for adsorbing the battery bottom shell.

[0037] Preferably, it also includes a base plate 228, which is connected to the positioning platform 221 through multiple support columns 229, and a clamping cylinder 2210 is provided on the base plate 228, and a first supporting cylinder 2211 for controlling the movement of the first movable supporting block 224 is provided on the positioning platform 221, and a second supporting cylinder 2212 for controlling the movement of the second movable supporting block 225 is provided at the bottom of the positioning platform 221.

[0038] Preferably, the first movable resisting block 224 is installed on the slot 2242 of the first sliding plate 2241, the bottom of the first sliding plate 2241 is connected to the first slide rail 2244 through the first slider 2243, a first connecting plate 2245 is provided on one side of the first sliding plate 2241, the first connecting plate 2245 is connected to the piston rod of the first resisting cylinder 11, the slot 2242 is set to two, there are two first movable resisting blocks 224, and the two first movable resisting blocks 224 are respectively installed on one slot 2242.

[0039] Preferably, two first guide rods 2246 are spaced apart at one end of the first sliding plate 2241, the ends of the two first guide rods 2246 are connected to the first limiting plate 2247, a first limiting screw 2248 is passed through the first limiting plate 2247, one end of the first limiting screw 2248 is fixedly connected to the first positioning seat 2249, two first limiting screws 2240 are screwed on the first limiting screw 2248, and the first limiting plate 2247 is located between the two first limiting screws 2240.

[0040] Preferably, the second movable abutment block 225 is installed on the slot of the second sliding plate 2251, the bottom of the second sliding plate 2251 is connected to the second slide rail 2253 through the second slider 2252, and a second connecting plate 2254 is provided in the middle of the second sliding plate 2251, and the second connecting plate 2254 is connected to the piston rod of the second abutment cylinder 2212.

[0041] Preferably, two second guide rods 2255 are spaced apart at one end of the second sliding plate 2251, the ends of the two second guide rods 2255 are connected to the second limiting plate 2256, a second limiting screw 2257 is passed through the second limiting plate 2256, one end of the second limiting screw 2257 is fixedly connected to the second positioning seat 2258, two second limiting screws 2259 are screwed on the second limiting screw 2257, and the second limiting plate 2256 is located between the two second limiting screws 2259.

[0042] Preferably, the third movable support block 226 is installed on the third sliding plate 2261, and the bottom of the third sliding plate 2261 is slidably connected to the third sliding rail 2263 through the third sliding block 2262. A spring hole is provided at one end of the third sliding plate 2261, and a spring 2264 is provided in the spring hole. A roller seat 2265 is provided on one side of the third sliding plate 2261, and a roller 2266 is provided on the roller seat 2265.

[0043] Preferably, a spring adjustment seat 2213 is also provided on the positioning platform 221, and the spring adjustment seat 2213 is arranged corresponding to the third movable support block 226. A plurality of screw holes are provided at intervals on the spring adjustment seat 2213, and one end of the spring 2264 extends into the screw hole. An adjusting screw 2214 is screwed into the screw hole, and the elastic force of the spring 2264 can be adjusted by rotating the adjusting screw 2214.

[0044] Preferably, a mounting plate 22101 is provided at the piston rod end of the clamping cylinder 2210, and a clamping top block 22102 is fixedly mounted on the mounting plate 22101. A slope 22103 is provided on the clamping top block 22102, and the slope 22103 is in contact with the roller 2266. When the clamping cylinder 2210 controls the clamping top block 22102 to move upward, the slope 22103 can push the third movable abutting block 226 to move and compress the spring 2264. When the clamping cylinder 2210 is reset, the spring 2264 pushes the third movable abutting block 226 to move and abut against the shell cover.

[0045] Preferably, the housing flipping and side-standing mechanism 14 comprises a flip cylinder mounting support 141, on which a flip cylinder 142 is provided, and the flip cylinder 142 controls the rotation of a flip platform 143, the flip angle of the flip platform 143 is 90 degrees, and a plurality of vacuum adsorption holes are provided at intervals on the flip platform 143; The flip cylinder mounting support 141 is fixed on the moving plate 144, and the moving plate 144 is controlled to move by the moving control servo module 145. The moving control servo module 145 includes a module profile, and a servo motor is provided at one end of the module profile. The servo motor drives the moving plate 144 to move through a synchronous wheel and a synchronous belt. A linear slide rail is provided on the module profile, and the moving plate 144 is connected to the linear slide rail through a slider.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and structure of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel shell battery cover welding detection device, comprising a frame, characterized in that: The frame is provided with a bottom shell circulation conveyor line, a bottom shell loading and handling manipulator, a welding mechanism, a CCD camera, a welding jig conveyor line, a shell cover handling manipulator, a shell cover loading manipulator, a detection and handling manipulator, a welding appearance detection mechanism, a transfer conveying platform, an airtightness detection mechanism, an airtightness detection and handling manipulator, a shell flipping and side-standing mechanism, a material unloading and handling manipulator and a material receiving tray conveyor line. The welding mechanism and the CCD camera are both arranged on a gantry mounting bracket, and a welding pressure plate mechanism is provided below the welding mechanism; the pressure plate mechanism includes a spot welding pressure plate and a full welding pressure plate, and the spot welding pressure plate and the full welding pressure plate are both controlled to move by a pressure plate transverse movement servo module; The welding jig conveyor line is provided with a welding fixture, the bottom shell feeding and handling robot takes the bottom shell from the bottom shell circulation conveyor line, and transports the bottom shell to the welding fixture for fixing, the CCD camera takes a picture of the bottom shell on the welding fixture, the welding jig conveyor line transports the welding fixture to the shell cover assembly position to wait for the shell cover assembly, the shell cover feeding robot takes the shell cover from the shell cover tray, and transports it to the positioning platform for positioning, the shell cover handling robot takes the shell cover from the positioning platform, and fixes the shell cover on the bottom shell of the welding fixture, the pressure plate transverse movement servo module controls the spot welding pressure plate to press down on the shell cover for positioning, the welding mechanism performs spot welding on the shell cover, after the shell cover spot welding is completed, the pressure plate transverse movement servo module controls the full welding pressure plate to move to the top of the welding fixture, and presses down on the shell cover for positioning, and the welding mechanism performs full welding on the shell cover; The welded shell is conveyed to the unloading position by the welding jig conveyor line, the inspection and handling robot takes the shell from the unloading position of the welding jig conveyor line and places it on the inspection displacement conveyor line, the inspection displacement conveyor line conveys the shell to the position of the welding appearance inspection mechanism for appearance inspection, and the qualified products of the shell appearance inspection are transported to the transfer conveying platform, and the qualified products of the shell appearance inspection are transported to the NG conveyor line, the airtightness inspection and handling robot takes the shell from the transfer conveying platform, and places the shell on the airtightness inspection mechanism for airtightness inspection, and the qualified products of the shell airtightness inspection are transported by the airtightness inspection and handling robot to the shell flipping and side standing mechanism for 90-degree flipping and side standing, the unloading and handling robot takes the shell from the shell flipping and side standing mechanism, and places the side-standing shell on the receiving tray conveyed by the receiving tray conveyor line.

2. The steel shell battery cover welding detection equipment according to claim 1, characterized in that: The spot welding platen is provided with a first groove, and a plurality of spot welding through holes are arranged at intervals at the bottom of the first groove. The laser spot welds the shell cover from the positions of the spot welding through holes in sequence, so that the shell cover is initially positioned on the bottom shell. The spot welding platen is installed on a first lifting slide plate, and the first lifting slide plate is controlled to move up and down by a first lifting cylinder. The first lifting cylinder is installed on a transverse slide plate, and the first lifting slide plate is connected to the transverse slide plate through a slide rail and a slider; a first elastic pressing block is provided at the bottom of the spot welding platen, and when the spot welding platen is pressed down, the first elastic pressing block is pressed on the shell cover, and the positions of the plurality of spot welding through holes are all arranged corresponding to the edges of the shell cover; the platen transverse movement servo module controls the transverse movement of the transverse slide plate; The full welding pressure plate is provided with a second groove, and the bottom of the second groove is provided with a full welding through hole. The laser fully welds the shell cover along the edge of the full welding through hole, so that the edge of the shell cover is completely welded to the bottom shell. The full welding pressure plate is installed on a second lifting slide plate, and the second lifting slide plate is controlled to lift and move by a second lifting cylinder. The second lifting cylinder is installed on the transverse sliding slide plate, and the second lifting slide plate is connected to the transverse sliding slide plate through a slide rail and a slider; a second elastic pressing block is provided at the bottom of the full welding pressure plate, and when the full welding pressure plate is pressed down, the second elastic pressing block is pressed on the shell cover.

3. The steel shell battery cover welding detection equipment according to claim 2, characterized in that: The welding mechanism includes a welding transverse movement servo module and a welding lifting servo module. The welding transverse movement servo module controls the lateral movement of the welding lifting servo module. The welding lifting servo module controls the movement of the welding lifting plate. A laser head and a first CCD camera are arranged on the welding lifting plate. Before welding by the laser head, the first CCD camera takes pictures of the positions of the spot welding through holes and the full welding through holes to determine the welding position and welding trajectory.

4. The steel shell battery cover welding detection equipment according to claim 1, characterized in that: The welding appearance detection mechanism includes a 3D scanner, and the 3D scanner is installed on the angle adjustment mechanism; The angle adjustment mechanism includes a first angle adjustment plate, which is installed on the base through an adjusting screw. A support seat is provided on the first angle adjustment plate, and a lifting adjustment plate is provided on the support seat. The lifting and lowering adjustment plate is adjusted by the lifting and lowering adjustment screws. The lifting and lowering adjustment plate is connected to the support seat through a slide rail and a slider. A rotating shaft is provided in the middle of the lifting and lowering adjustment plate, and a second angle adjustment screw is provided on the side of the lifting and lowering adjustment plate. The rotating shaft is connected to the second angle adjustment plate, and the second angle adjustment screw adjusts the angle of the second angle adjustment plate. The 3D scanner is installed on the second angle adjustment plate.

5. The steel shell battery cover welding detection equipment according to claim 4, characterized in that: The detection displacement conveyor line includes an X-axis detection servo module and a Y-axis detection servo module. The X-axis detection servo module controls the movement of the Y-axis detection servo module. The Y-axis detection servo module controls the movement of a DD motor. The DD motor controls the rotation of a positioning platform. The positioning platform is provided with a shell positioning seat, a first elastic clamping block and a second elastic clamping block. The shell positioning seat is provided with a positioning step. The first elastic clamping block is located on one side of the positioning step, and the second elastic clamping block is located on the other side of the positioning step. The ends of the first elastic clamping block and the second elastic clamping block are both provided with guide arc surfaces.

6. The steel shell battery cover welding detection equipment according to claim 1, characterized in that: The air tightness detection mechanism comprises a mounting platform, a detection platform and a lateral movement control cylinder are arranged on the mounting platform, a battery detection cavity is arranged on the detection platform, the lateral movement control cylinder controls the movement of a lifting control cylinder, the lifting control cylinder controls the movement of a cover plate, the cover plate can cover the detection platform and seal the battery detection cavity, an exhaust nozzle mounting bracket is also arranged on the mounting platform, a nitrogen blowing nozzle mounting plate is arranged on one side of the cover plate, a nitrogen blowing nozzle is arranged on the nitrogen blowing nozzle mounting plate, an exhaust nozzle is arranged on the exhaust nozzle mounting bracket, an exhaust hole is arranged at the bottom of the battery detection cavity, the exhaust hole is connected to the helium detector through a pipeline, when the cover plate is opened, the nitrogen blowing nozzle blows nitrogen into the battery detection cavity, and the exhaust nozzle extracts the gas in the battery detection cavity; The nitrogen blowing nozzle mounting plate is provided with an arc-shaped hole, and the nitrogen blowing nozzle mounting plate can adjust the mounting angle through the arc-shaped hole. The exhaust nozzle mounting bracket includes a vertical rod and a horizontal rod, and the vertical rod is provided with a connecting seat, and the horizontal rod is passed through the connecting seat; The connecting seat is provided with a vertical rod through hole and a horizontal rod through hole, and the vertical rod through hole and the horizontal rod through hole are both provided with a notch, and the tightness of the notch is adjusted by a screw.

7. The steel shell battery cover welding detection equipment according to claim 6, characterized in that: The mounting platform is also provided with an air needle control cylinder, the air needle control cylinder controls the movement of an air needle mounting plate, the air needle mounting plate is provided with an air needle, the air needle is located on one side of the detection platform, and the detection platform is provided with an air needle through-hole on one side corresponding to the air needle, the air needle penetrates into the battery detection cavity through the air needle through-hole, and penetrates into the battery shell cavity in the battery detection cavity; A sealing cover plate is provided on the bottom surface of the cover plate, and an annular sealing groove is provided on the side wall of the battery detection cavity, and the sealing cover plate can be inserted into the annular sealing groove; An elastic pressing block is provided in the middle of the sealing cover plate, and when the sealing cover plate is covered in the battery detection cavity, the elastic pressing block presses on the battery shell to position the battery; The mounting platform is also provided with a linear guide rail, the lifting control cylinder is mounted on a cylinder mounting plate, and the cylinder mounting plate is connected to the linear guide rail through a slider.

8. The steel shell battery cover welding detection equipment according to claim 1, characterized in that: The welding fixture includes a positioning platform, on which a bottom shell positioning groove, a fixed abutment block, a first movable abutment block, a second movable abutment block and a third movable abutment block are provided. The bottom shell positioning groove is square, the fixed abutment block is located on one side of the bottom shell positioning groove in the length direction, the first movable abutment block is located on the other side of the bottom shell positioning groove in the length direction, the second movable abutment block is located on one side of the bottom shell positioning groove in the width direction, and the third movable abutment block is located on the other side of the bottom shell positioning groove in the width direction. Notches are provided at the abutting top ends of the fixed abutment block, the first movable abutment block and the second movable abutment block, and a vacuum adsorption hole is provided at the bottom of the bottom shell positioning groove.

9. The steel shell battery cover welding detection equipment according to claim 8, characterized in that: It also includes a bottom plate, which is connected to the positioning platform through a plurality of support columns, a clamping cylinder is provided on the bottom plate, a first abutting cylinder for controlling the movement of the first movable abutting block is provided on the positioning platform, and a second abutting cylinder for controlling the movement of the second movable abutting block is provided at the bottom of the positioning platform; The first movable abutting block is installed on the card slot of the first sliding plate, the bottom of the first sliding plate is connected to the first sliding rail through the first sliding block, a first connecting plate is provided on one side of the first sliding plate, and the first connecting plate is connected to the piston rod of the first abutting cylinder, the card slot is set to two, the first movable abutting blocks are two, and the two first movable abutting blocks are respectively installed on one of the card slots; Two first guide rods are arranged at one end of the first sliding plate, the ends of the two first guide rods are connected to the first limit plate, a first limit screw is passed through the first limit plate, one end of the first limit screw is fixedly connected to the first positioning seat, two first limit screws are screwed on the first limit screw, and the first limit plate is located between the two first limit screws; The second movable abutting block is installed on the card slot of the second sliding plate, the bottom of the second sliding plate is connected to the second slide rail through the second sliding block, the middle of the second sliding plate is provided with a second connecting plate, and the second connecting plate is connected to the piston rod of the second abutting cylinder; Two second guide rods are arranged at one end of the second sliding plate, the ends of the two second guide rods are connected to the second limit plate, a second limit screw is passed through the second limit plate, one end of the second limit screw is fixedly connected to the second positioning seat, two second limit screws are screwed on the second limit screw, and the second limit plate is located between the two second limit screws; The third movable abutting block is installed on the third sliding plate, the bottom of the third sliding plate is slidably connected to the third sliding rail through the third sliding block, one end of the third sliding plate is provided with a spring hole, a spring is provided in the spring hole, one side of the third sliding plate is provided with a roller seat, and a roller is provided on the roller seat; The positioning platform is also provided with a spring adjustment seat, the spring adjustment seat is arranged corresponding to the third movable abutting block, a plurality of screw holes are arranged at intervals on the spring adjustment seat, one end of the spring extends into the screw hole, an adjustment screw is screwed into the screw hole, and the elastic force of the spring can be adjusted by rotating the adjustment screw; A mounting plate is provided at the piston rod end of the clamping cylinder, and an clamping top block is fixedly mounted on the mounting plate. The clamping top block is provided with an inclined surface, and the inclined surface is in contact with the roller. When the clamping cylinder controls the clamping top block to move upward, the inclined surface can push the third movable abutting block to move and compress the spring. When the clamping cylinder is reset, the spring pushes the third movable abutting block to move and abut against the shell cover.

10. The steel shell battery cover welding detection equipment according to claim 1, characterized in that: The housing flipping and side-standing mechanism comprises a flip cylinder mounting support seat, on which a flip cylinder is arranged, and the flip cylinder controls the rotation of a flip platform, the flip angle of the flip platform is 90 degrees, and a plurality of vacuum adsorption holes are arranged at intervals on the flip platform; The tilt cylinder mounting support is fixed on a moving plate, and the moving plate is controlled to move by a moving control servo module.

Images