Battery cover plate explosion-proof film laser welding equipment

Abstract

The application discloses a battery cover plate explosion-proof film laser welding device and belongs to the technical field of laser welding. The device comprises a main body mechanism for welding the explosion-proof film on the battery cover plate, a positioning mechanism for positioning the battery cover plate to be welded and a smoothing mechanism for smoothing the explosion-proof film on the main body mechanism. In the positioning mechanism, the side positioning plate is lifted by the top-up slope block in cooperation with the lower pressing rod, the pressing element is lifted in advance before positioning, then the inner push plate pushes the cover plate from the left and right directions, at the same time, the lifting plate drives the front and rear push plates to correct from the front and rear directions synchronously, the pressing rod is automatically returned to press tightly after positioning, and the laser welding is provided with the basis of high repeat positioning accuracy. In the smoothing mechanism, the roller rolls back and forth on the surface of the explosion-proof film through the multiple expansion and contraction of the smoothing electric cylinder, the film surface is fully flattened, the air between the film and the welding groove of the cover plate is discharged, and the explosion-proof film is tightly combined with the bottom surface of the welding groove.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, and in particular to a laser welding equipment for explosion-proof film on battery cover plates. Background Technology

[0002] As a key structural component of power batteries, the quality of the installation of the explosion-proof film on the battery cover directly affects the battery's safety performance and service life. During the battery cover manufacturing process, the explosion-proof film must be precisely welded into the welding groove of the cover to ensure that the battery can release pressure in time under abnormal internal pressure, preventing explosion accidents.

[0003] Currently, the welding of explosion-proof films for battery covers is mostly done manually or with semi-automatic equipment. In traditional processes, the processes of feeding, positioning, placing the explosion-proof film, smoothing, welding, and unloading the battery cover are often carried out separately, relying on manual transfer between each process. This not only results in low production efficiency but also makes it easy for manual operation to introduce errors, affecting welding consistency and product quality. Especially in the placement of the explosion-proof film, because the explosion-proof film material is thin and easily deformed, manual placement makes it difficult to ensure its precise alignment in the welding groove. If the explosion-proof film has wrinkles or is misaligned before welding, it will directly lead to welding defects, and in severe cases, even cause the battery cover to be scrapped.

[0004] While some existing automated welding equipment has been improved, it still has many shortcomings. For example, the positioning accuracy of the battery cover at the welding station is insufficient, and there is a lack of synchronous correction of the cover in multiple directions, which makes it impossible for the laser welding head to accurately align with the welding area; after the explosion-proof film is placed, there is a lack of effective smoothing treatment, making it difficult to guarantee the flatness of the film surface and affecting the welding bonding effect; in addition, there is a lack of online quality inspection and automatic sorting functions after welding, which makes it impossible to automatically separate qualified and unqualified products, which is not conducive to product quality traceability and control. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention discloses an integrated equipment capable of automatically feeding battery cover plates, precisely positioning them, automatically picking up and smoothing explosion-proof films, laser welding, online detection, and automatic sorting throughout the entire process. The technical solution adopted by this invention is as follows: a laser welding equipment for explosion-proof films on battery cover plates, comprising a main body mechanism for welding explosion-proof films onto battery cover plates, the main body mechanism comprising an equipment frame, and a positioning mechanism for positioning the battery cover plate to be welded and a smoothing mechanism for smoothing the explosion-proof film. The main structure includes a central fixed plate fixedly installed on the equipment frame, a workstation turntable rotatably installed on the equipment frame, multiple placement frames fixedly installed on the workstation turntable, and a motor for driving the workstation turntable to rotate inside the equipment frame.

[0006] Furthermore, the main structure also includes a conveyor frame fixedly installed on the equipment frame, a delivery belt on the conveyor frame, a motor inside the conveyor frame for driving the delivery belt to rotate, a welding bracket fixedly installed on the equipment frame, a laser welding head on the welding bracket, a detector and a blower fixedly installed on the equipment frame, a rework belt on the equipment frame, a take-out frame fixedly installed on the equipment frame, a take-out suction cup slidably installed on the take-out frame, a motor fixedly installed inside the take-out frame, a lead screw fixedly installed on the motor shaft of the motor, and the lead screw and the take-out suction cup forming a threaded transmission.

[0007] Furthermore, the main structure also includes multiple side pressure rods slidably mounted on the workstation turntable. The side pressure rods are slidably mounted with the placement frame. A lower pressure rod is slidably mounted below the side pressure rods. A pressure rod spring is provided between the lower pressure rod and the side pressure rod. A lower lifting rod is fixedly mounted below the side pressure rod. A lower spring is provided between the lower lifting rod and the workstation turntable. Multiple lower electric cylinders are fixedly mounted on the equipment frame. A lifting ring is fixedly mounted on the output end of the lower electric cylinder. The lifting ring is located below the lower lifting rod.

[0008] Furthermore, the main structure also includes a membrane turntable rotatably mounted on the equipment frame. The equipment frame is equipped with a motor for driving the membrane turntable to rotate. Multiple film placement boxes are fixedly mounted on the membrane turntable, and explosion-proof films are placed on the film placement boxes.

[0009] Furthermore, the main structure also includes a film feeding bracket fixedly installed on the equipment frame, a film feeding motor fixedly installed on the film feeding bracket, a lead screw rotatably installed inside the film feeding bracket, the lead screw being fixedly installed with the motor shaft of the film feeding motor, a sliding frame slidably installed on the film feeding bracket, the sliding frame and the lead screw forming a threaded transmission, a horizontal electric cylinder fixedly installed on the sliding frame, a forward frame slidably installed on the sliding frame, the forward frame being fixedly installed with the output end of the horizontal electric cylinder, a lifting bracket slidably installed on the forward frame, a lifting electric cylinder fixedly installed on the forward frame, the lifting bracket being fixedly installed with the output end of the lifting electric cylinder, and multiple film-grabbing suction cups fixedly installed below the lifting bracket.

[0010] Furthermore, the main structure also includes a cover-feeding frame fixedly installed on the equipment frame, a cover-feeding motor fixedly installed on the cover-feeding frame, a lead screw rotatably installed inside the cover-feeding frame, the lead screw being fixedly installed with the motor shaft of the cover-feeding motor, a cover-feeding moving frame slidably installed on the cover-feeding frame, the cover-feeding moving frame and the lead screw forming a threaded transmission, a lateral moving electric cylinder fixedly installed on the cover-feeding moving frame, a lateral moving outer frame slidably installed on the cover-feeding moving frame, the lateral moving outer frame being fixedly installed with the output end of the lateral moving electric cylinder, a picking electric cylinder fixedly installed on the lateral moving outer frame, a picking frame slidably installed on the lateral moving outer frame, the picking frame being fixedly installed with the output end of the picking electric cylinder, and a cover-picking suction cup fixedly installed below the picking frame.

[0011] The battery cover is conveyed to the cover feeding frame by an external conveying mechanism. The cover feeding motor drives the lead screw inside the cover feeding frame to rotate. The lead screw drives the cover feeding frame to slide along the cover feeding frame. The lateral electric cylinder extends and retracts, causing the lateral outer frame to slide along the cover feeding frame. The picking electric cylinder extends and retracts, causing the picking frame and the cover picking suction cup to rise and fall. The cover picking suction cup adsorbs the battery cover and moves it above the placement frame. Then the battery cover is placed on the placement frame, realizing the loading of the battery cover. When the battery cover is loaded, the lower electric cylinder extends, causing the lifting ring, lower lifting rod and side pressure rod to rise. The lower spring is compressed. When the battery cover is placed on the placement frame, the lower electric cylinder retracts, causing the lifting ring to fall. The lower spring rebounds, and the lower lifting rod and side pressure rod fall, so that the lower pressure rod presses the battery cover on the placement frame. The pressure rod spring is in a compressed state.

[0012] After the battery cover is loaded, the turntable rotates, carrying the battery cover to the positioning mechanism. The positioning mechanism adjusts and positions the battery cover. Then, the turntable carries the battery cover to the film feeding bracket. The film feeding motor drives the lead screw inside the bracket to rotate, causing the sliding frame to slide along the bracket. The horizontal electric cylinder extends and retracts, causing the forward frame to slide along the sliding frame. The lifting electric cylinder extends and retracts, causing the lifting bracket and the film-retrieving suction cup to rise and fall. The film-retrieving suction cup places the explosion-proof film from the film box into the welding groove on the battery cover. Next, the turntable rotates with the battery cover to the smoothing mechanism, which smooths the explosion-proof film on the battery cover. Finally, the turntable carries the battery cover to the laser welding head, where the laser welding head... The explosion-proof film is laser-welded onto the battery cover. Then, a turntable carries the battery cover to an inspection instrument to test the welding quality. Next, the turntable carries the battery cover to a blower head for cleaning the explosion-proof film. Finally, the turntable carries the battery cover to the bottom of the take-up rack. At this point, the lower electric cylinder extends, lifting the side pressure rod, and a suction cup picks up the battery cover. The suction cup slides along the take-up rack, removing the battery cover from the placement frame. If the welding inspection is successful, the battery cover is placed on the delivery belt. If the inspection fails, the battery cover is placed on the rework belt. Successful battery covers and explosion-proof films are then delivered via the delivery belt, while unsuccessful ones are delivered via the rework belt.

[0013] Furthermore, the positioning mechanism includes a positioning bracket fixedly installed on a central fixed plate, a proximity electric cylinder fixedly installed on the positioning bracket, a vertical guide column slidably installed on the positioning bracket, a lifting frame fixedly installed on the vertical guide column, the lifting frame fixedly installed with the motor shaft of the proximity electric cylinder, a positioning electric cylinder fixedly installed on the lifting frame, a lifting ring fixedly installed on the output end of the positioning electric cylinder, a lifting rod rotatably installed on the lifting ring, a side guide column fixedly installed on the lifting frame, a side positioning plate slidably installed on the side guide column, a side spring provided between the side positioning plate and the lifting frame, a lifting ramp and an inner push plate fixedly installed on the inner side of the side positioning plate, and a slope surface provided on the lifting ramp.

[0014] Furthermore, the positioning mechanism also includes front and rear columns fixedly installed on the lifting frame, front and rear push plates slidably installed on the front and rear columns, front and rear springs provided between the front and rear push plates and the lifting frame, front and rear rotating plates rotatably installed on the front and rear push plates, and a lifting plate rotatably installed on the front and rear rotating plates. The lifting plate is slidably installed on the lifting frame and slidably installed on the output end of the positioning electric cylinder. A lower spring is provided between the output end of the positioning electric cylinder and the lifting plate.

[0015] As the placement frame, carrying the battery cover, moves to the positioning bracket, the electric cylinder extends, causing the lifting frame and guide column to descend. Then, the positioning electric cylinder retracts, causing the lifting ring to rise. The lifting ring, via the lifting rod, moves the side positioning plate inward along the side guide column, compressing the side spring. First, the lifting ramp contacts the lower pressure rod, and the ramp surface pushes the lower pressure rod upward, further compressing the pressure rod spring. Then, the inner push plate contacts the side of the battery cover, pushing the battery cover and positioning it in the left-right direction. Before the lifting ramp lifts the lower pressure rod, the lower spring is compressed. When the lifting plate is stationary, and the lower pressure bar is lifted, the lower spring is compressed to its limit. At this point, the positioning electric cylinder retracts and begins to lift the lifting plate. The lifting plate, through the front and rear rotating plates, drives the front and rear push plates to move inward along the front and rear columns. The front and rear springs are compressed, and the front and rear push plates begin to push the battery cover. The two front and rear push plates position the battery cover on the front and rear sides. After positioning is completed, the positioning electric cylinder extends. When the lifting ramp moves away from under the lower pressure bar, the pressure bar spring rebounds, causing the lower pressure bar to press against the battery cover again and rise closer to the electric cylinder to prevent affecting the movement path of the placement frame.

[0016] The smoothing mechanism includes a smoothing bracket fixedly installed on the equipment frame, a smoothing electric cylinder fixedly installed on the smoothing bracket, a guide column fixedly installed on the smoothing bracket, a smoothing frame slidably installed on the guide column, the smoothing frame and the output end of the smoothing electric cylinder fixedly installed, a limit plate fixedly installed on the inner side of the smoothing frame, a rotating collar rotatably installed on the smoothing frame, a sliding column slidably installed on the rotating collar, a lower rotating head fixedly installed on the sliding column, a sliding column spring provided between the lower rotating head and the rotating collar, a contacting rotating plate rotatably installed on the inner side of the smoothing frame, the contacting rotating plate and the lower rotating head rotatably installed, and a smoothing roller rotatably installed at the end of the contacting rotating plate.

[0017] After the placement frame, carrying the battery cover and explosion-proof film, moves to the smoothing bracket, the smoothing electric cylinder retracts, causing the smoothing frame to descend along the guide post. When the smoothing roller contacts the explosion-proof film on the battery cover, the smoothing frame continues to descend, causing the bonding plate to rotate relative to the smoothing frame. The sliding spring is compressed, and at the same time, the smoothing roller rolls along the explosion-proof film. Then, the smoothing electric cylinder extends, causing the smoothing frame to rise, and the smoothing roller rolls back along the explosion-proof film. Through the multiple extensions and retractions of the smoothing electric cylinder, the smoothing roller smooths the explosion-proof film back and forth.

[0018] The beneficial effects of this invention compared with the prior art are: (1) This invention integrates the processes of feeding, positioning, film placement, smoothing, welding, inspection, purging and unloading into one unit through the workstation turntable. Each workstation operates synchronously and in parallel. With the intermittent rotation of the turntable driven by the motor, the continuous automated processing of the battery cover plate is realized. No manual intervention is required throughout the process, eliminating the efficiency bottleneck and operation error caused by manual transfer, and improving the production cycle and product welding consistency; (2) In the positioning mechanism set in this invention, the side positioning plate lifts the clamping element in advance before positioning by lifting the slope block and cooperating with the lower pressure rod. Then the inner push plate pushes the cover plate from the left and right directions. At the same time, the lifting plate drives the front and rear push plates from the front and rear directions through the front and rear rotating plates. After step correction and positioning, the pressure rod automatically returns to its original position and tightens, which not only realizes the bidirectional positioning of the battery cover in the placement frame, but also avoids the scratch damage to the cover during the positioning process, providing a basis for high repeatability positioning accuracy for laser welding; (3) In the smoothing mechanism set in this invention, the smoothing roller is floatingly installed on the smoothing frame through the bonding plate and the sliding column spring. When it descends and contacts the explosion-proof film, it can adaptively deflect with the shape of the film surface to achieve conformal bonding. Through the multiple extension and retraction of the smoothing electric cylinder, the roller rolls back and forth on the surface of the explosion-proof film, fully flattening the film surface and expelling the air between the film and the cover welding groove, ensuring that the explosion-proof film and the bottom surface of the welding groove are tightly bonded, effectively avoiding welding defects such as false welding and missing welding caused by uneven film surface. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the main structure of the present invention. Figure 1 .

[0021] Figure 3 This is a schematic diagram of the main structure of the present invention. Figure 2 .

[0022] Figure 4 This is a schematic diagram of the main structure of the present invention. Figure 3 .

[0023] Figure 5 This is a schematic diagram of the main structure of the present invention. Figure 4 .

[0024] Figure 6 This is a schematic diagram of the positioning mechanism structure of the present invention. Figure 1 .

[0025] Figure 7 This is a schematic diagram of the positioning mechanism structure of the present invention. Figure 2 .

[0026] Figure 8 This is a schematic diagram of the smoothing mechanism structure of the present invention. Figure 1 .

[0027] Figure 9 This is a schematic diagram of the smoothing mechanism structure of the present invention. Figure 2 .

[0028] Reference numerals: 101-Equipment frame; 102-Conveyor frame; 103-Exit belt; 104-Rework belt; 105-Removal suction cup; 106-Removal frame; 107-Center fixed plate; 108-Workstation turntable; 109-Placement frame; 110-Blow head; 111-Detector; 112-Welding bracket; 113-Laser welding head; 114-Side pressure bar; 115-Lower pressure bar; 116-Pressure bar spring; 117- 118 - Lower lifting rod; 119 - Lower electric cylinder; 120 - Lifting ring; 121 - Film turntable; 122 - Film feeding bracket; 123 - Film feeding motor; 124 - Forward frame; 125 - Lifting electric cylinder; 126 - Sliding frame; 127 - Horizontal electric cylinder; 128 - Lifting bracket; 129 - Film suction cup; 130 - Cover feeding frame; 131 - Cover feeding motor; 132 - Cover feeding moving frame; 133 - Horizontal moving electric cylinder; 134 - Horizontal moving... External frame; 135-Retrieval electric cylinder; 136-Retrieval frame; 137-Lid retrieval suction cup; 138-Place film box; 201-Positioning bracket; 202-Approach electric cylinder; 203-Lifting frame; 204-Upright guide column; 205-Positioning electric cylinder; 206-Lifting ring; 207-Lifting rotating rod; 208-Side positioning plate; 209-Side guide column; 210-Side spring; 211-Lifting ramp; 212-Inner push plate; 213-Lifting plate; 2 14-Lower spring; 215-Front and rear push plates; 216-Front and rear columns; 217-Front and rear springs; 218-Front and rear rotating plates; 301-Smoothing bracket; 302-Smoothing electric cylinder; 303-Guide column; 304-Smoothing frame; 305-Rotating collar; 306-Sliding column; 307-Sliding column spring; 308-Fitting rotating plate; 309-Lower rotating head; 310-Smoothing roller; 311-Limiting plate; 4-Battery cover; 5-Explosion-proof film. Detailed Implementation

[0029] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0030] Example: Reference Figures 1-9A laser welding equipment for explosion-proof film on battery cover plate includes a main body mechanism for welding explosion-proof film 5 onto battery cover plate 4. The main body mechanism includes an equipment frame 101, and the main body mechanism is provided with a positioning mechanism for positioning the battery cover plate 4 to be welded and a smoothing mechanism for smoothing the explosion-proof film 5. The main structure includes a central fixed plate 107 fixedly installed on the equipment frame 101, a workstation turntable 108 rotatably installed on the equipment frame 101, a plurality of placement frames 109 fixedly installed on the workstation turntable 108, and a motor for driving the workstation turntable 108 to rotate is provided inside the equipment frame 101.

[0031] like Figures 2-5 As shown, the main structure also includes a conveyor frame 102 fixedly installed on the equipment frame 101. A delivery belt 103 is provided on the conveyor frame 102. A motor for driving the delivery belt 103 to rotate is provided inside the conveyor frame 102. A welding bracket 112 is fixedly installed on the equipment frame 101. A laser welding head 113 is provided on the welding bracket 112. A detector 111 and a blower head 110 are fixedly installed on the equipment frame 101. A rework belt 104 is provided on the equipment frame 101. A take-out frame 106 is fixedly installed on the equipment frame 101. A take-out suction cup 105 is slidably installed on the take-out frame 106. A motor is fixedly installed inside the take-out frame 106. A lead screw is fixedly installed on the motor shaft of the motor. The lead screw and the take-out suction cup 105 form a threaded transmission.

[0032] like Figures 2-5 As shown, the main structure also includes multiple side pressure rods 114 slidably mounted on the workstation turntable 108. The side pressure rods 114 are slidably mounted on the placement frame 109. A lower pressure rod 115 is slidably mounted below the side pressure rods 114. A pressure rod spring 116 is provided between the lower pressure rod 115 and the side pressure rod 114. A lower lifting rod 118 is fixedly mounted below the side pressure rods 114. A lower spring 117 is provided between the lower lifting rod 118 and the workstation turntable 108. Multiple lower electric cylinders 119 are fixedly mounted on the equipment frame 101. A lifting ring 120 is fixedly mounted on the output end of the lower electric cylinder 119. The lifting ring 120 is located below the lower lifting rod 118.

[0033] like Figures 2-5 As shown, the main mechanism also includes a membrane turntable 121 rotatably mounted on the equipment frame 101. The equipment frame 101 is equipped with a motor for driving the membrane turntable 121 to rotate. Multiple film placement boxes 138 are fixedly mounted on the membrane turntable 121, and explosion-proof films 5 are placed on the film placement boxes 138.

[0034] like Figures 2-5As shown, the main structure also includes a film feeding bracket 122 fixedly installed on the equipment frame 101. A film feeding motor 123 is fixedly installed on the film feeding bracket 122. A lead screw is rotatably installed inside the film feeding bracket 122. The lead screw is fixedly installed with the motor shaft of the film feeding motor 123. A sliding frame 126 is slidably installed on the film feeding bracket 122. The sliding frame 126 and the lead screw form a threaded transmission. A horizontal electric cylinder 127 is fixedly installed on the sliding frame 126. A forward frame 124 is slidably installed on the sliding frame 126. The forward frame 124 is fixedly installed with the output end of the horizontal electric cylinder 127. A lifting bracket 128 is slidably installed on the forward frame 124. A lifting electric cylinder 125 is fixedly installed on the forward frame 124. The lifting bracket 128 is fixedly installed with the output end of the lifting electric cylinder 125. Multiple film-taking suction cups 129 are fixedly installed below the lifting bracket 128.

[0035] like Figures 2-5 As shown, the main mechanism also includes a cover-feeding frame 130 fixedly installed on the equipment frame 101. A cover-feeding motor 131 is fixedly installed on the cover-feeding frame 130. A lead screw is rotatably installed inside the cover-feeding frame 130. The lead screw is fixedly installed with the motor shaft of the cover-feeding motor 131. A cover-feeding moving frame 132 is slidably installed on the cover-feeding frame 130. The cover-feeding moving frame 132 and the lead screw form a threaded transmission. A transverse moving electric cylinder 133 is fixedly installed on the cover-feeding moving frame 132. A transverse moving outer frame 134 is slidably installed on the cover-feeding moving frame 132. The transverse moving outer frame 134 is fixedly installed with the output end of the transverse moving electric cylinder 133. A picking electric cylinder 135 is fixedly installed on the transverse moving outer frame 134. A picking frame 136 is slidably installed on the transverse moving outer frame 134. The picking frame 136 is fixedly installed with the output end of the picking electric cylinder 135. A cover-picking suction cup 137 is fixedly installed below the picking frame 136.

[0036] The battery cover 4 is conveyed to the side of the cover delivery frame 130 by an external conveying mechanism. The cover delivery motor 131 drives the lead screw inside the cover delivery frame 130 to rotate. The lead screw drives the cover delivery moving frame 132 to slide along the cover delivery frame 130. The lateral electric cylinder 133 extends and retracts, causing the lateral outer frame 134 to slide along the cover delivery moving frame 132. The picking electric cylinder 135 extends and retracts, causing the picking frame 136 and the cover picking suction cup 137 to rise and fall. The cover picking suction cup 137 adsorbs the battery cover 4 and moves the battery cover 4 above the placement frame 109. Then, the battery cover 4 is placed in the placement frame. On frame 109, the battery cover 4 is loaded. When the battery cover 4 is loaded, the lower electric cylinder 119 extends, driving the lifting ring 120, the lower lifting rod 118 and the side pressure rod 114 to rise, and the lower spring 117 is compressed. When the battery cover 4 is placed on the placement frame 109, the lower electric cylinder 119 retracts, driving the lifting ring 120 to fall, the lower spring 117 rebounds, and the lower lifting rod 118 and the side pressure rod 114 fall, so that the lower pressure rod 115 presses the battery cover 4 onto the placement frame 109, and the pressure rod spring 116 is in a compressed state.

[0037] After the battery cover plate 4 is loaded, the station turntable 108 rotates, carrying the battery cover plate 4 to the positioning mechanism. The positioning mechanism adjusts and positions the battery cover plate 4. Then, the station turntable 108 carries the battery cover plate 4 to the side of the film feeding bracket 122. The film feeding motor 123 drives the lead screw inside the film feeding bracket 122 to rotate. The lead screw drives the sliding frame 126 to slide along the film feeding bracket 122. The horizontal electric cylinder 127 extends and retracts, driving the forward frame 124 to slide along the sliding frame 126. The lifting electric cylinder 125 extends and retracts, driving the lifting bracket 128 and the film picking suction cup 129 to rise and fall. The film picking suction cup 129 places the explosion-proof film 5 on the film box 138 into the welding groove on the battery cover plate 4. Then, the station turntable 108 carries the battery cover plate 4 to the smoothing mechanism. The smoothing mechanism smooths the explosion-proof film 5 placed on the battery cover plate 4. Then, the station turntable 108 carries the battery cover plate 4 to the area below the laser welding head 113. The laser welding head 113 then applies the explosion-proof film to the weld groove. The membrane 5 is laser-welded to the battery cover 4. Then, the turntable 108 carries the battery cover 4 to the detector 111, where the welding quality of the explosion-proof membrane 5 is inspected. Next, the turntable 108 carries the battery cover 4 to the blower head 110, where the blower head 110 blows and cleans the explosion-proof membrane 5. Finally, the turntable 108 carries the battery cover 4 to the bottom of the removal rack 106. At this point, the lower electric cylinder 119 extends, lifting the side pressure rod 114 to remove the suction cup 1. 05. The battery cover plate 4 is adsorbed and removed from the placement frame 109 by sliding the suction cup 105 along the removal frame 106. If the welding inspection is qualified, the battery cover plate 4 is placed on the delivery belt 103. If the inspection is unqualified, the battery cover plate 4 is placed on the rework belt 104. Then, the qualified battery cover plate 4 and the explosion-proof film 5 are sent out by the delivery belt 103, and the unqualified battery cover plate 4 and the explosion-proof film 5 are sent out by the rework belt 104.

[0038] like Figure 6 , Figure 7 As shown, the positioning mechanism includes a positioning bracket 201 fixedly installed on the central fixed plate 107. A proximity electric cylinder 202 is fixedly installed on the positioning bracket 201. A vertical guide column 204 is slidably installed on the positioning bracket 201. A lifting frame 203 is fixedly installed on the vertical guide column 204. The lifting frame 203 is fixedly installed with the motor shaft of the proximity electric cylinder 202. A positioning electric cylinder 205 is fixedly installed on the lifting frame 203. A lifting ring 206 is fixedly installed on the output end of the positioning electric cylinder 205. A lifting rod 207 is rotatably installed on the lifting ring 206. A side guide column 209 is fixedly installed on the lifting frame 203. A side positioning plate 208 is slidably installed on the side guide column 209. A side spring 210 is provided between the side positioning plate 208 and the lifting frame 203. A lifting ramp 211 and an inner push plate 212 are fixedly installed on the inner side of the side positioning plate 208. A slope surface is provided on the lifting ramp 211.

[0039] like Figure 6 , Figure 7 As shown, the positioning mechanism also includes front and rear columns 216 fixedly installed on the lifting frame 203. Front and rear push plates 215 are slidably installed on the front and rear columns 216. Front and rear springs 217 are provided between the front and rear push plates 215 and the lifting frame 203. Front and rear rotating plates 218 are rotatably installed on the front and rear push plates 215. Lifting plate 213 is rotatably installed on the front and rear rotating plates 218. Lifting plate 213 is slidably installed on the lifting frame 203. Lifting plate 213 is slidably installed on the output end of the positioning electric cylinder 205. A lower spring 214 is provided between the output end of the positioning electric cylinder 205 and the lifting plate 213.

[0040] When the placement frame 109, carrying the battery cover 4, moves to the side of the positioning bracket 201, the extension of the electric cylinder 202 causes the lifting frame 203 and the vertical guide column 204 to descend. Then, the positioning electric cylinder 205 retracts, causing the lifting ring 206 to rise. The lifting ring 206, through the lifting rotating rod 207, causes the side positioning plate 208 to move inward along the side guide column 209, compressing the side spring 210. First, the lifting ramp 211 contacts the lower pressure rod 115, and the slope of the lifting ramp 211 pushes the lower pressure rod 115 upward, further compressing the pressure rod spring 116. Then, the inner push plate 212 contacts the side of the battery cover 4, pushing the battery cover 4 and positioning it in the left and right directions. Before the lifting ramp 211 lifts the lower pressure rod 115, the lower spring 21... When the lower pressure bar 115 is lifted, the lower spring 214 is compressed to its limit. At this time, the positioning electric cylinder 205 retracts and begins to drive the lifting plate 213 to rise. The lifting plate 213 drives the front and rear push plates 215 to move inward along the front and rear columns 216 through the front and rear rotating plates 218. The front and rear springs 217 are compressed, and the front and rear push plates 215 begin to push the battery cover 4. The battery cover 4 is positioned on the front and rear sides by the two front and rear push plates 215. After the positioning is completed, the positioning electric cylinder 205 extends. When the lifting ramp 211 leaves the lower pressure bar 115, the pressure bar spring 116 rebounds, so that the lower pressure bar 115 presses on the battery cover 4 again and rises close to the electric cylinder 202 to prevent affecting the movement path of the placement frame 109.

[0041] like Figure 8 , Figure 9As shown, the smoothing mechanism includes a smoothing bracket 301 fixedly installed on the equipment frame 101, a smoothing electric cylinder 302 fixedly installed on the smoothing bracket 301, a guide column 303 fixedly installed on the smoothing bracket 301, a smoothing frame 304 slidably installed on the guide column 303, the smoothing frame 304 being fixedly installed with the output end of the smoothing electric cylinder 302, a limit plate 311 fixedly installed on the inner side of the smoothing frame 304, a rotating collar 305 rotatably installed on the smoothing frame 304, a sliding column 306 slidably installed on the rotating collar 305, a lower rotating head 309 fixedly installed on the sliding column 306, a sliding column spring 307 provided between the lower rotating head 309 and the rotating collar 305, a contacting rotating plate 308 rotatably installed on the inner side of the smoothing frame 304, the contacting rotating plate 308 being rotatably installed with the lower rotating head 309, and a smoothing roller 310 rotatably installed at the end of the contacting rotating plate 308.

[0042] When the placement frame 109, carrying the battery cover 4 and the explosion-proof film 5, moves to the side of the smoothing bracket 301, the smoothing cylinder 302 retracts, causing the smoothing frame 304 to descend along the guide post 303. When the smoothing roller 310 contacts the explosion-proof film 5 on the battery cover 4, the smoothing frame 304 continues to descend, causing the bonding plate 308 to rotate relative to the smoothing frame 304. The sliding spring 307 is compressed, and at the same time, the smoothing roller 310 rolls along the explosion-proof film 5. Then, the smoothing cylinder 302 extends, causing the smoothing frame 304 to rise, and the smoothing roller 310 rolls back along the explosion-proof film 5. Through the multiple extensions and retractions of the smoothing cylinder 302, the smoothing roller 310 smooths the explosion-proof film 5 back and forth.

[0043] Working principle: The battery cover plate 4 is conveyed to the side of the cover delivery frame 130 by an external conveying mechanism. The cover delivery motor 131 drives the lead screw inside the cover delivery frame 130 to rotate. The lead screw drives the cover delivery moving frame 132 to slide along the cover delivery frame 130. The lateral electric cylinder 133 extends and retracts, causing the lateral outer frame 134 to slide along the cover delivery moving frame 132. The picking electric cylinder 135 extends and retracts, causing the picking frame 136 and the cover picking suction cup 137 to rise and fall. The cover picking suction cup 137 adsorbs the battery cover plate 4 and moves the battery cover plate 4 above the placement frame 109. Then, the battery cover plate 4 is placed... The battery cover 4 is loaded onto the placement frame 109. When the battery cover 4 is being loaded, the lower electric cylinder 119 extends, causing the lifting ring 120, the lower lifting rod 118, and the side pressure rod 114 to rise. The lower spring 117 is compressed. When the battery cover 4 is placed onto the placement frame 109, the lower electric cylinder 119 retracts, causing the lifting ring 120 to fall. The lower spring 117 rebounds, and the lower lifting rod 118 and the side pressure rod 114 fall, so that the lower pressure rod 115 presses the battery cover 4 onto the placement frame 109. The pressure rod spring 116 is in a compressed state.

[0044] After the battery cover 4 is loaded, the station turntable 108 rotates, carrying the battery cover 4 to the positioning mechanism. When the placement frame 109 moves with the battery cover 4 to the side of the positioning bracket 201, the electric cylinder 202 extends, causing the lifting frame 203 and the vertical guide column 204 to descend. Then, the positioning electric cylinder 205 retracts, causing the lifting ring 206 to rise. The lifting ring 206 drives the side positioning plate 208 to move inward along the side guide column 209 through the lifting rotating rod 207. The side spring 210 is compressed. First, the lifting ramp 211 contacts the lower pressure rod 115. The slope of the lifting ramp 211 pushes the lower pressure rod 115 to rise, and the pressure rod spring 116 is further compressed. Then, the inner push plate 212 contacts the side of the battery cover 4, pushing the battery cover 4 and positioning the battery cover 4 in the left and right directions. When the lifting ramp 211... Before the lower pressure bar 115 is lifted, the lower spring 214 is compressed and the lifting plate 213 does not move. When the lower pressure bar 115 is lifted, the lower spring 214 is compressed to its limit. At this time, the positioning electric cylinder 205 retracts and begins to drive the lifting plate 213 to rise. The lifting plate 213 drives the front and rear push plates 215 to move inward along the front and rear columns 216 through the front and rear rotating plates 218. The front and rear springs 217 are compressed, and the front and rear push plates 215 begin to push the battery cover 4. The battery cover 4 is positioned on the front and rear sides by the two front and rear push plates 215. After the positioning is completed, the positioning electric cylinder 205 extends. When the lifting ramp 211 leaves the lower pressure bar 115, the pressure bar spring 116 rebounds, so that the lower pressure bar 115 presses on the battery cover 4 again and rises close to the electric cylinder 202 to prevent affecting the movement path of the placement frame 109. Subsequently, the workstation turntable 108, carrying the battery cover plate 4, arrives at the film feeding bracket 122. The film feeding motor 123 drives the lead screw inside the film feeding bracket 122 to rotate. The lead screw drives the sliding frame 126 to slide along the film feeding bracket 122. The horizontal electric cylinder 127 extends and retracts, driving the forward frame 124 to slide along the sliding frame 126. The lifting electric cylinder 125 extends and retracts, driving the lifting bracket 128 and the film picking suction cup 129 to rise and fall. The explosion-proof film 5 on the film box 138 is placed into the welding groove on the battery cover plate 4 through the film picking suction cup 129. Then, the workstation turntable 108, carrying the battery cover plate 4, rotates to the smoothing mechanism. When the placement frame 109 carries the battery cover plate 4... After the explosion-proof film 5 moves to the side of the smoothing bracket 301, the smoothing electric cylinder 302 retracts, causing the smoothing frame 304 to descend along the guide post 303. When the smoothing roller 310 contacts the explosion-proof film 5 on the battery cover plate 4, the smoothing frame 304 continues to descend, causing the bonding plate 308 to rotate relative to the smoothing frame 304. The sliding spring 307 is compressed, and at the same time, the smoothing roller 310 rolls along the explosion-proof film 5. Then the smoothing electric cylinder 302 extends, causing the smoothing frame 304 to rise, and the smoothing roller 310 rolls back along the explosion-proof film 5. Through the multiple extensions and retractions of the smoothing electric cylinder 302, the smoothing roller 310 smooths the explosion-proof film 5 back and forth.Subsequently, the turntable 108, carrying the battery cover plate 4, reaches below the laser welding head 113, where the explosion-proof film 5 is laser-welded to the battery cover plate 4. Then, the turntable 108, carrying the battery cover plate 4, reaches the detector 111, where the welding quality of the explosion-proof film 5 is inspected. Next, the turntable 108, carrying the battery cover plate 4, reaches the blower head 110, where the explosion-proof film 5 is blown clean. Finally, the turntable 108, carrying the battery cover plate 4, reaches below the removal rack 106, at which point the lower electric cylinder... 119 extends, lifting the side pressure rod 114, and the suction cup 105 is taken out to adsorb the battery cover plate 4. By sliding the suction cup 105 along the take-out frame 106, the battery cover plate 4 is taken away from the placement frame 109. If the welding inspection is qualified, the battery cover plate 4 is placed on the delivery belt 103. If the inspection is unqualified, the battery cover plate 4 is placed on the rework belt 104. Then, the qualified battery cover plate 4 and the explosion-proof film 5 are sent out by the delivery belt 103, and the unqualified battery cover plate 4 and the explosion-proof film 5 are sent out by the rework belt 104.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope of the present invention based on the technical solution and inventive concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A laser welding device for explosion-proof film on battery cover, comprising a main body mechanism for welding the explosion-proof film onto the battery cover, characterized in that: The main structure includes an equipment frame, and the main structure is provided with a positioning mechanism for positioning the battery cover plate to be welded and a smoothing mechanism for smoothing the explosion-proof film. The main structure includes a central fixed plate fixedly installed on the equipment frame, a workstation turntable rotatably installed on the equipment frame, multiple placement frames fixedly installed on the workstation turntable, and a motor for driving the workstation turntable to rotate inside the equipment frame.

2. The laser welding equipment for explosion-proof film on battery cover plates according to claim 1, characterized in that: The main structure also includes a conveyor frame fixedly installed on the equipment frame, a delivery belt on the conveyor frame, a motor inside the conveyor frame for driving the delivery belt to rotate, a welding bracket fixedly installed on the equipment frame, a laser welding head on the welding bracket, a detector and a blower fixedly installed on the equipment frame, a rework belt on the equipment frame, a take-out frame fixedly installed on the equipment frame, a take-out suction cup slidably installed on the take-out frame, a motor fixedly installed inside the take-out frame, a lead screw fixedly installed on the motor shaft of the motor, and the lead screw and the take-out suction cup forming a threaded drive.

3. The laser welding equipment for explosion-proof film on battery cover plates according to claim 2, characterized in that: The main structure also includes multiple side pressure rods slidably mounted on the workstation turntable. The side pressure rods are slidably mounted with the placement frame. A lower pressure rod is slidably mounted below the side pressure rods. A pressure rod spring is provided between the lower pressure rod and the side pressure rod. A lower lifting rod is fixedly mounted below the side pressure rod. A lower spring is provided between the lower lifting rod and the workstation turntable. Multiple lower electric cylinders are fixedly mounted on the equipment frame. A lifting ring is fixedly mounted on the output end of the lower electric cylinder. The lifting ring is located below the lower lifting rod.

4. The laser welding equipment for explosion-proof film on battery cover plates according to claim 3, characterized in that: The main structure also includes a membrane turntable rotatably mounted on the equipment frame. The equipment frame is equipped with a motor for driving the membrane turntable to rotate. Multiple film placement boxes are fixedly installed on the membrane turntable, and explosion-proof films are placed on the film placement boxes.

5. The laser welding equipment for explosion-proof film on battery cover plates according to claim 4, characterized in that: The main structure also includes a film feeding bracket fixedly installed on the equipment frame. A film feeding motor is fixedly installed on the film feeding bracket. A lead screw is rotatably installed inside the film feeding bracket. The lead screw is fixedly installed with the motor shaft of the film feeding motor. A sliding frame is slidably installed on the film feeding bracket. The sliding frame and the lead screw form a threaded transmission. A horizontal electric cylinder is fixedly installed on the sliding frame. A forward frame is slidably installed on the sliding frame. The forward frame is fixedly installed with the output end of the horizontal electric cylinder. A lifting bracket is slidably installed on the forward frame. A lifting electric cylinder is fixedly installed on the forward frame. The lifting bracket is fixedly installed with the output end of the lifting electric cylinder. Multiple film-grabbing suction cups are fixedly installed below the lifting bracket.

6. The laser welding equipment for explosion-proof film on battery cover plates according to claim 5, characterized in that: The main structure also includes a cover-feeding frame fixedly installed on the equipment frame, a cover-feeding motor fixedly installed on the cover-feeding frame, a lead screw rotatably installed inside the cover-feeding frame, the lead screw being fixedly installed with the motor shaft of the cover-feeding motor, a cover-feeding moving frame slidably installed on the cover-feeding frame, the cover-feeding moving frame and the lead screw forming a threaded transmission, a lateral moving electric cylinder fixedly installed on the cover-feeding moving frame, a lateral moving outer frame slidably installed on the cover-feeding moving frame, the lateral moving outer frame being fixedly installed with the output end of the lateral moving electric cylinder, a picking electric cylinder fixedly installed on the lateral moving outer frame, a picking frame slidably installed on the lateral moving outer frame, the picking frame being fixedly installed with the output end of the picking frame, and a cover-picking suction cup fixedly installed below the picking frame.

7. The laser welding equipment for explosion-proof film on battery cover plates according to claim 1, characterized in that: The positioning mechanism includes a positioning bracket fixedly mounted on a central fixed plate, a proximity electric cylinder fixedly mounted on the positioning bracket, a vertical guide column slidably mounted on the positioning bracket, a lifting frame fixedly mounted on the vertical guide column, the lifting frame fixedly mounted to the motor shaft of the proximity electric cylinder, a positioning electric cylinder fixedly mounted on the lifting frame, a lifting ring fixedly mounted on the output end of the positioning electric cylinder, a lifting rod rotatably mounted on the lifting ring, a side guide column fixedly mounted on the lifting frame, a side positioning plate slidably mounted on the side guide column, a side spring provided between the side positioning plate and the lifting frame, a lifting ramp and an inner push plate fixedly mounted on the inner side of the side positioning plate, and a slope surface provided on the lifting ramp.

8. The laser welding equipment for explosion-proof film on battery cover plates according to claim 7, characterized in that: The positioning mechanism also includes front and rear columns fixedly installed on the lifting frame, front and rear push plates slidably installed on the front and rear columns, front and rear springs provided between the front and rear push plates and the lifting frame, front and rear rotating plates rotatably installed on the front and rear push plates, and a lifting plate rotatably installed on the front and rear rotating plates. The lifting plate is slidably installed on the lifting frame and slidably installed on the output end of the positioning electric cylinder. A lower spring is provided between the output end of the positioning electric cylinder and the lifting plate.

9. The laser welding equipment for explosion-proof film on battery cover plates according to claim 1, characterized in that: The smoothing mechanism includes a smoothing bracket fixedly installed on the equipment frame, a smoothing electric cylinder fixedly installed on the smoothing bracket, a guide column fixedly installed on the smoothing bracket, a smoothing frame slidably installed on the guide column, the smoothing frame and the output end of the smoothing electric cylinder fixedly installed, a limit plate fixedly installed on the inner side of the smoothing frame, a rotating collar rotatably installed on the smoothing frame, a sliding column slidably installed on the rotating collar, a lower rotating head fixedly installed on the sliding column, a sliding column spring provided between the lower rotating head and the rotating collar, a contacting rotating plate rotatably installed on the inner side of the smoothing frame, the contacting rotating plate and the lower rotating head rotatably installed, and a smoothing roller rotatably installed at the end of the contacting rotating plate.

Images