Battery bottom marking equipment and marking method

Abstract

The invention relates to battery bottom marking equipment and method.The marking equipment comprises a feeding structure, a transferring structure and a carving structure, and the feeding structure is used for conveying cylindrical batteries to be detected and marked; the transfer structure is used for clamping the battery at the feeding structure and completing outer diameter detection of the cylindrical battery in the transfer process; and the carving structure is used for receiving the cylindrical battery transferred to the carving structure by the transferring structure and marking the bottom of the battery. During actual marking, a cylindrical battery is conveyed through the feeding assembly, a pneumatic clamping jaw is used for automatically taking materials, after the outer diameters of multiple positions of the cylindrical battery are measured during actual marking, the battery is placed into the holding assembly, and the cylindrical battery is held by the holding assembly to be prevented from falling off during overturning marking, so that the marking efficiency is improved. Compared with manual overturning, the cylindrical battery bottom marking device has the advantages that the battery marking efficiency is improved, the consistency of the positions of the cylindrical batteries after overturning is guaranteed, and the percent of pass of marked finished products is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of battery processing, and in particular relates to a battery bottom marking device and a marking method. Background Art

[0002] At present, batteries have been widely used in various industries, such as mobile phones, tablets, notebooks, desktop computers, electric cars, electric buses, etc. Consumers have a huge demand for batteries, and their requirements for the quality of lithium batteries are getting higher and higher.

[0003] Coding and labeling batteries is an important process in the production of lithium batteries. Only when the lithium battery has a unique code can the various test data of the lithium battery be matched one by one with the lithium battery, and it can be clear whether the quality of the lithium battery is qualified. In order not to affect the packaging of the lithium battery, the bottom of the lithium battery is usually marked.

[0004] In the existing lithium battery marking process, the operator needs to flip the lithium battery 180 degrees and place it under the marking machine or laser machine, and the laser machine above completes the marking operation. Workers are prone to fatigue in long-term working mode, which reduces the battery marking efficiency. More importantly, the operator cannot accurately place the flipped battery under the marking machine or laser machine, which is prone to deviation, reducing the qualified rate of the finished product. Summary of the invention

[0005] The invention provides a battery bottom marking device and a marking method, which solve the defects of low marking efficiency and easy deviation in the existing marking process.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a battery bottom marking device, which includes the following steps:

[0007] A feeding structure, the feeding structure comprising a roller line, a tray placed on the top of the roller line, and a positioning assembly arranged outside the roller line and used to position the tray, wherein the tray is inserted with batteries;

[0008] A transfer structure, the transfer structure comprising a support frame erected above the roller line, a transfer plate disposed on the support frame and movable along three axes, namely, X, Y, and Z, and a pneumatic clamp fixed at the bottom of the transfer plate, the pneumatic clamp being used to clamp the batteries on the tray;

[0009] An engraving structure, the engraving structure comprising a moving plate moving along an X-axis, an angle plate rotatably mounted on one side of the moving plate, a holding assembly disposed on the angle plate and used to hold a battery, and an engraving machine moving along a Y-axis, the engraving machine being used to mark the bottom of the battery;

[0010] A material unloading structure is provided on the other side of the engraving structure. The material unloading structure has the same structure as the material loading structure and is used for unloading after the battery bottom is marked.

[0011] Optimally, the tray includes a tray bottom plate, a tray middle plate integrally connected above the tray bottom plate, a tray top plate integrally connected above the tray middle plate, a first through hole passing through the tray top plate and the tray middle plate, and a second through hole passing through the tray bottom plate, the diameter of the first through hole is larger than the diameter of the second through hole, and the battery is inserted into the first through hole.

[0012] Optimally, the positioning assembly includes a positioning groove opened on the outside of the pallet and a positioning block movably arranged on the top of the roller line, and the positioning block is inserted into the positioning groove to complete the positioning of the pallet.

[0013] Optimally, the transfer structure also includes a clamping block fixed at the bottom of the pneumatic clamp, an arc-shaped portion arranged on the inner side of the clamping block, and a projection tester arranged on one side of the roller line and opposite to each other. The pneumatic clamp clamps the battery between the projection tester and drives the battery to rotate, thereby completing the outer diameter measurement of the battery.

[0014] Optimally, the holding assembly includes a transition column embedded in the angle plate, a temporary storage groove vertically penetrating the transition column, a support plate integrally connected to the bottom of the transition column, an avoidance hole penetrating the support plate and communicating with the temporary storage groove, a holding groove provided on the outer side of the transition column, a clamping plate elastically provided on one side of the transition column, and a holding portion provided on the side of the clamping plate close to the transition column;

[0015] After the battery is inserted into the temporary storage slot, the clamping plate moves toward one side of the transition column until the holding portion holds the outer side wall of the battery.

[0016] Optimally, the holding assembly also includes a baffle fixed on the top of the angle plate, a spring arranged between the baffle and the card plate, a second push strip integrally connected to one side of the card plate, a pushing cylinder fixed on the top of the movable plate, a push plate connected to the pushing cylinder, and a first push strip integrally connected to one side of the push plate and cooperating with the second push strip.

[0017] Optimally, the holding assembly also includes a guide portion obliquely arranged at the top of the temporary storage groove, a slide rail fixed to the top of the angle plate, and a slider slidably installed on the slide rail, and the clamping plate is fixed on the slider.

[0018] Optimally, the engraving structure also includes a first slide, a rotating cylinder fixed on the top of the movable plate, a photoelectric sensor adjustably arranged on one side of the first slide, and a sensing plate fixed on the bottom of the movable plate and cooperating with the photoelectric sensor, the movable plate is fixed on the first slide, and the angle plate is fixed on the rotating cylinder.

[0019] Optimally, the engraving structure further comprises a side rail fixed to one side of the first slide, a locking block slidably connected to the side rail, and a locking nut penetrating the locking block, and the photoelectric sensor is fixed to the locking block.

[0020] The present invention also provides a battery bottom marking method, comprising the following steps:

[0021] S1. Transporting the pallet with batteries through the roller line:

[0022] S2, the positioning assembly completes the positioning of the tray;

[0023] S3, the transfer structure clamps the battery positioned in step S2, and measures the outer diameter of the battery at multiple locations;

[0024] S4, the transfer structure transfers the battery after the outer diameter is measured to the holding component, and the holding component holds the battery;

[0025] S5. Hold the assembly and flip it over so that the bottom of the battery faces upwards.

[0026] S6, using an engraving machine to mark the bottom of the battery after turning over in step S5;

[0027] S7, holding the assembly and flipping the battery after the bottom marking in step S6, and completing the unloading of the battery by the unloading structure.

[0028] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0029] The battery bottom marking device of the present invention conveys cylindrical batteries through a loading component and uses a pneumatic clamp to automatically pick up materials. During the process, the outer diameters of the cylindrical batteries are measured at multiple locations, and then the batteries are placed in a holding component. The cylindrical batteries are held by the holding component to prevent them from falling during flipping and marking, and the bottom is marked. Compared with manual flipping, the battery marking efficiency is improved, the position consistency of the cylindrical batteries after flipping is ensured, and the qualified rate of the finished products after marking is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the feeding structure of the present invention;

[0032] Figure 3 It is a front view of the feeding structure of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the pallet of the present invention;

[0034] Figure 5 is a cross-sectional view of a tray of the present invention;

[0035] Figure 6 It is a structural schematic diagram of the transfer structure of the present invention;

[0036] Figure 7 It is a partial structural schematic diagram of the transfer structure of the present invention;

[0037] Figure 8 It is a structural schematic diagram of the engraving structure of the present invention;

[0038] Fig. 9 For the present invention Figure 8 The enlarged view of point A in the middle;

[0039] Fig.10 It is a schematic diagram of the local structure of the engraving structure of the present invention;

[0040] Fig.11 For the present invention Fig.10 The main view of

[0041] Fig.12 It is a schematic diagram of the structure of the transition column of the present invention;

[0042] Fig.13 is a cross-sectional view of a transition column of the present invention;

[0043] Fig.14 It is a structural schematic diagram of the card board of the present invention;

[0044] Fig.15 This is a diagram showing the position relationship between the card plate and the transition column of the present invention;

[0045] Description of reference numerals:

[0046] 1. Material loading structure; 101. Support plate; 102. Roller; 103. Tray bottom plate; 104. Tray middle plate; 105. Tray top plate; 106. First through hole; 107. Second through hole; 108. Positioning groove; 109. Vertical plate; 110. Positioning cylinder; 111. Positioning block; 112. Blocking cylinder; 113. Partition plate;

[0047] 2. Transfer structure; 201. Support frame; 202. X-axis linear slide; 203. Y-axis linear slide; 204. Z-axis linear slide; 205. Transfer plate; 206. Pneumatic clamp; 207. Clamping block; 208. Arc portion; 209. Projection tester;

[0048] 3. Engraving structure; 301. First slide; 302. Second slide; 303. Moving plate; 304. Engraving machine; 305. Rotating cylinder; 306. Angle plate; 307. Induction sheet; 308. Side rail; 309. Photoelectric sensor; 310. Locking block; 311. Locking nut; 312. Pushing cylinder; 313. Pushing plate; 314. First pushing strip; 315. Slide rail; 316. Sliding block; 317. Baffle; 318. Card plate; 319. Spring; 320. Second pushing strip; 321. Holding part; 322. Transition column; 323. Temporary storage groove; 324. Guide part; 325. Support plate; 326. Avoidance hole; 327. Holding groove. DETAILED DESCRIPTION

[0049] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0050] like Figure 1 As shown, it is a schematic diagram of the structure of the battery bottom marking device of the present invention, which is usually used to clamp a cylindrical battery and flip it 180° in the vertical direction, mark the bottom of the battery, and complete the outer diameter detection of the cylindrical battery before marking, so as to determine the qualified rate of the battery.

[0051] The battery bottom marking equipment consists of three parts: a feeding structure 1, a transfer structure 2 and an engraving structure 3. The feeding structure 1 is used to transport the cylindrical batteries to be inspected and marked; the transfer structure 2 is used to clamp the batteries at the feeding structure 1 and complete the outer diameter detection of the cylindrical batteries during the transfer process; the engraving structure 3 is used to receive the cylindrical batteries transferred thereto by the transfer structure 2, and flip the cylindrical batteries 180° in the vertical direction to perform marking processing on the bottom of the batteries.

[0052] like Figure 2 , 3 The figure shows a schematic diagram of the structure of the feeding structure 1, which is used to transport cylindrical batteries to be inspected and marked. The feeding structure 1 includes a support plate 101, a roller 102, a tray, a positioning assembly, a blocking cylinder 112 and a partition 113. There are two support plates 101 and they are arranged on the marking machine at intervals. There are multiple groups of rollers 102 and they are rotatably installed between the support plates 101. The tray with cylindrical batteries inserted is placed on the rollers 102, and the tray is driven forward by the rotation of the rollers 102.

[0053] The height of the support plate 101 is greater than the diameter of the roller 102. Therefore, when the roller 102 drives the pallet forward, the portion of the support plate 101 that is higher than the roller 102 can block the two sides of the pallet to prevent the pallet from moving away from the two sides when being transported forward.

[0054] like Figure 4 , 5As shown, it is a schematic diagram of the structure of the pallet, and the pallet includes a pallet bottom plate 103, a pallet middle plate 104, and a pallet top plate 105. The pallet middle plate 104 is integrally connected to the top of the pallet bottom plate 103, and the pallet top plate 105 is integrally connected to the top of the pallet middle plate 104. There are gaps between the pallet bottom plate 103 and the pallet middle plate 104, and between the pallet middle plate 104 and the pallet top plate 105, which can save material costs during processing and reduce the overall weight of the pallet, which is more labor-saving when conveyed by the roller 102 and convenient for subsequent positioning.

[0055] The first through hole 106 vertically penetrates the tray middle plate 104 and the tray top plate 105, and the cylindrical battery to be marked is inserted into the first through hole 106. Under the limiting effect of the two groups of first through holes 106 on the tray top plate 105 and the tray middle plate 104, the cylindrical battery is always kept in a vertical state, which is convenient for the subsequent clamping of the transfer structure 2. If only one group of first through holes 106 is used for limiting, the cylindrical battery is prone to slight tilt in the vertical direction, and even if the transfer structure 2 clamps the cylindrical battery at this location, it cannot be accurately inserted into the temporary storage slot 323.

[0056] The second through hole 107 is set on the tray bottom plate 103 and has a diameter smaller than the diameter of the first through hole 106. The cylindrical battery after marking is inserted into the tray of the unloading structure, and the tray of the unloading structure adopts the same structure as the tray of the loading structure 1. At this time, the bottom of the cylindrical battery has been marked. When the tray bottom plate 103 carries the cylindrical battery, the second through hole 107 can avoid the marking position of the bottom of the battery to avoid scratching the marking area.

[0057] The positioning assembly includes a positioning groove 108, a vertical plate 109, a positioning cylinder 110 and a positioning block 111. The positioning groove 108 is vertically opened on the outside of the tray, and the positioning groove 108 cooperates with the positioning block 111 to complete the positioning of the tray. After placing the tray carrying cylindrical batteries on the roller 102, there is no need to distinguish between the left and right sides of the tray, so as to avoid the operator's misplacement operation and thus prolonging the marking cycle.

[0058] The vertical plate 109 is fixed on the marking machine by welding and is located on the same side of the support plate 101. The positioning cylinder 110 is fixed on the vertical plate 109 to push the positioning block 111 to move inward. Until the positioning block 111 is inserted into the positioning groove 108, the positioning of the tray is completed.

[0059] The blocking cylinder 112 is fixed on the marking machine, and the partition 113 is connected to the blocking cylinder 112 and is located between two adjacent groups of rollers 102. The rollers 102 drive the tray carrying the cylindrical batteries to move forward, and the blocking cylinder 112 drives the partition 113 to rise. The rollers 102 stop rotating, and the positioning block 111 moves inward to complete the positioning of the tray. Figure 2As shown, when multiple trays are placed on the drum 102, the additional partition 113 can be used to block the subsequent second tray. Figure 6 As shown, it is a structural schematic diagram of the transfer structure 2, which is used to clamp the batteries on the tray and complete the outer diameter detection of the cylindrical batteries during the transfer process. The transfer structure 2 includes a support frame 201, an X-axis linear slide 202, a Y-axis linear slide 203, a Z-axis linear slide 204, a transfer plate 205, a pneumatic clamp 206, a clamping block 207, an arc portion 208 and a projection tester 209. The support frame 201 is fixed on the marking machine and is erected above the loading structure 1, the X-axis linear slide 202 is distributed along the X-axis at the top of the support frame 201, the Y-axis linear slide 203 is fixed on the sliding part of the X-axis linear slide 202 and distributed along the Y-axis, the Z-axis linear slide 204 is fixed on the sliding part of the Y-axis linear slide 203, and the transfer plate 205 is fixed on the sliding part of the Z-axis linear slide 204. At this point, under the drive of the X-axis linear slide 202, the Y-axis linear slide 203 and the Z-axis linear slide 204, the transfer plate 205 can move to any position in the three axes, thereby realizing the clamping and transfer of the cylindrical battery.

[0060] like Figure 7 As shown, the pneumatic clamp 206 is fixed to the bottom of the rotating plate 205 by a rotating motor, and the pneumatic clamp 206 is used to clamp the cylindrical battery on the tray. A clamping block 207 is fixed to the inner side of the bottom of the pneumatic clamp 206, and an arc portion 208 is provided on the inner side of the clamping block 207. When clamping the cylindrical battery, the pneumatic clamp 206 drives the two groups of clamping blocks 207 to move inward to clamp the cylindrical battery. During this period, the two groups of arc portions 208 hold the outer wall of the cylindrical battery to complete the clamping of the cylindrical battery. By providing the arc portion 208, the contact area between the clamping block 207 and the cylindrical battery can be increased, thereby ensuring that the cylindrical battery is clamped more stably while avoiding indentations on the surface of the battery.

[0061] There are two projection testers 209, which are fixed on the marking machine and arranged opposite to each other. After the pneumatic gripper 206 clamps the cylindrical battery on the tray, it moves to between a group of projection testers 209, and the pneumatic gripper 206 drives the cylindrical battery to rotate 360°. During this period, a group of projection testers 209 detects the outer diameter of the cylindrical battery at multiple locations to determine whether it is a qualified product.

[0062] like Figure 8, which is a schematic diagram of the structure of the engraving structure 3. The engraving structure 3 is used to receive the cylindrical battery transferred thereto by the transfer structure 2, and to flip the cylindrical battery 180° in the vertical direction, and to mark the bottom of the battery. The engraving structure 3 includes a first slide 301, a second slide 302, a moving plate 303, an engraving machine 304, a rotating cylinder 305, an angle plate 306, a sensor sheet 307, a side rail 308, a photoelectric sensor 309, a locking block 310, a locking nut 311 and a holding assembly.

[0063] The first slide 301 is fixed on the marking machine along the X-axis direction, and the moving plate 303 is fixed on the sliding part of the first slide 301. The moving plate 303 is driven to move along the X-axis direction by the first slide 301. The induction sheet 307 is fixed on the bottom of the moving plate 303 and cooperates with the photoelectric sensor 309 to complete the positioning of the moving plate 303.

[0064] like Fig. 9 As shown, the side rail 308 is horizontally fixed on the side of the first slide 301, the locking block 310 is slidably connected to the side rail 308, and the locking nut 311 passes through the locking block 310 and is set on the side rail 308, thereby fixing the position of the locking block 310. The photoelectric sensor 309 is fixed on the locking block 310. During actual marking, the position of the photoelectric sensor 309 can be adjusted by adjusting the position of the locking block 310, thereby improving the adaptability of the equipment.

[0065] The second slide 302 is fixed on the support frame 201 along the Y-axis direction, and the engraving machine 304 is fixed on the sliding part of the second slide 302. The second slide 302 drives the engraving machine 304 to move along the Y-axis, thereby performing marking processing on the bottom of the cylindrical battery.

[0066] The rotating cylinder 305 is fixed on the top of the moving plate 303, and the angle plate 306 is fixed on the rotating part of the rotating cylinder 305. The rotating cylinder 305 drives the angle plate 306 to rotate 180° in the vertical direction, so that the cylindrical battery is turned over to face the bottom upward, which is convenient for the engraving machine 304 to mark the bottom surface of the cylindrical battery.

[0067] like Fig.10 , 11 , which is a schematic diagram of the structure of the holding assembly, which is used to hold the cylindrical battery to prevent the battery from falling under the influence of its own gravity when the cylindrical battery is turned over. The holding assembly includes a push cylinder 312, a push plate 313, a first push bar 314, a slide rail 315, a slider 316, a baffle 317, a clamping plate 318, a spring 319, a second push bar 320, a holding portion 321, a transition column 322, a temporary storage groove 323, a guide portion 324, a support plate 325, an avoidance hole 326 and a holding groove 327.

[0068] The push cylinder 312 is fixed on the top of the moving plate 303, and the push plate 313 is fixed on the moving part of the push cylinder 312. The push plate 313 is driven to move by the push cylinder 312. The first push bar 314 is fixed at intervals on the side of the push plate 313 away from the push cylinder 312. Under the action of the push cylinder 312, the first push bar 314 pushes the second push bar 320 forward until the holding part 321 opens, so as to facilitate the insertion of the cylindrical battery.

[0069] When the first push bar 314 is withdrawn, the holding portion 321 extends under the action of the spring 319 to hold the cylindrical battery and prevent it from falling during subsequent rotation. Fig.10 As shown, a gap is left between two adjacent groups of first push bars 314 so as to avoid the position of the transition column 322 when the second push bar 320 is pushed forward.

[0070] The transition column 322 is embedded in the angle plate 306, and the transfer structure 2 inserts the cylindrical battery after the outer diameter is measured into the transition column 322, and the holding part 321 holds the cylindrical battery in the transition column 322 to prevent the cylindrical battery from falling when it is turned over. Fig.12 , 13 As shown, it is a structural schematic diagram of the transition column 322. A temporary storage groove 323 is vertically arranged inside the transition column 322. The diameter of the temporary storage groove 323 is equal to the outer diameter of the cylindrical battery. The transfer structure 2 inserts the cylindrical battery after the outer diameter is measured into the temporary storage groove 323.

[0071] The support plate 325 is integrally connected to the bottom of the transition column 322, and the avoidance hole 326 vertically penetrates the support plate 325 and is connected to the temporary storage groove 323. The diameter of the avoidance hole 326 is smaller than the diameter of the temporary storage groove 323. When the transfer structure 2 inserts the cylindrical battery after the outer diameter is measured into the temporary storage groove 323, the risk of the cylindrical battery falling from the temporary storage groove 323 is avoided under the support of the support plate 325. When inserting cylindrical batteries, the support plate 325 can not only play a bearing role for the cylindrical batteries, but also complete the positioning of the cylindrical batteries, ensuring that the position of the cylindrical batteries placed each time is consistent. During the subsequent flip marking, ensure that the distance between the engraving machine 304 and the bottom of the cylindrical battery is consistent, thereby ensuring that the marking effect is consistent each time. Otherwise, the difference in marking distance will lead to differences in marking effect, thereby reducing the qualified rate of the finished product.

[0072] After the corner plate 306 drives the transition column 322 to flip 180 degrees, the design of the avoidance hole 326 can also avoid the engraving path of the upper engraving machine 304, thereby ensuring that the engraving machine 304 completes the marking process at the bottom of the cylindrical battery.

[0073] The guide portion 324 is tiltedly disposed at the top of the temporary storage groove 323 . When the transfer structure 2 inserts the cylindrical battery into the temporary storage groove 323 , it guides the inserted cylindrical battery to ensure smooth insertion of the cylindrical battery.

[0074] like Fig.15 As shown, the holding groove 327 is provided on the side of the transition column 322 away from the push plate 313. From a top view, the holding groove 327 is a 180° ring (i.e., it is exactly half of the transition column 322). Thus, when holding the cylindrical battery, the effective contact surface of the temporary storage groove 323 contacts half of the outer wall of the cylindrical battery, while the holding portion 321 contacts the other half of the outer wall of the cylindrical battery (i.e., the temporary storage groove 323 and the holding portion 321 each complete the holding of half of the cylindrical battery, which can ensure sufficient contact with the outer wall of the cylindrical battery and improve the holding effect; and can also ensure that the holding force on both sides of the cylindrical battery is consistent, thereby improving the balance of the cylindrical battery and avoiding crooked marking during subsequent marking).

[0075] If the holding groove 327 exceeds half of the transition column 322, no matter what the structure of the holding portion 321 is, the contact area with the outer side wall of the cylindrical battery will be reduced, thereby reducing the holding effect.

[0076] If the retaining groove is smaller than half of the transition column 322, if the effective contact surface of the transition column 322 remains unchanged, the contact area with the outer wall of the cylindrical battery will be reduced, thereby reducing the holding effect; if the contact surface of the transition column 322 is increased, even if sufficient contact with the outer wall of the cylindrical battery is ensured, the retaining force on both sides of the cylindrical battery will be inconsistent, and the balance of the cylindrical battery cannot be guaranteed.

[0077] like Fig.14 As shown, it is a schematic diagram of the structure of the card plate 318. The card plate 318 is slidably connected to the angle plate 306 by the cooperation of the slide rail 315 and the slider 316. The second push bar 320 is integrally connected to the side of the card plate 318 close to the push plate 313, and is used in conjunction with the first push bar 314. There is a gap between two adjacent groups of second push bars 320, which is used to avoid the position of the transition column 322 when holding the cylindrical battery. The first push bar 314 pushes the second push bar 320 forward under the action of the push cylinder 312 until the holding part 321 opens, which facilitates the insertion of the cylindrical battery.

[0078] The holding portion 321 is provided on one side of the card plate 318 close to the push plate 313 and is located between two adjacent sets of second push strips 320. The holding portion 321 is 180 degrees in annular shape and cooperates with the effective contact surface of the transition column 322. When the first push strip 314 is withdrawn, the holding portion 321 extends to hold the cylindrical battery and prevent it from falling during subsequent rotation.

[0079] The baffle 317 is fixed on the top of the angle plate 306. A spring groove is provided on the opposite side of the baffle 317 and the clamping plate 318. The spring 319 is arranged in the spring groove. Under the action of the spring 319, the holding part 321 can be opened and held.

[0080] The working principle of the battery bottom marking device of the present invention is as follows:

[0081] First, the roller 102 drives the tray carrying the cylindrical batteries to move forward, and the blocking cylinder 112 drives the partition 113 to rise. The roller 102 stops rotating. At this time, the positioning cylinder 110 drives the positioning block 111 to extend and insert into the positioning groove 108 to complete the positioning of the tray.

[0082] After the pneumatic gripper 206 grips the cylindrical battery on the tray, it moves to a group of projection testers 209, and the pneumatic gripper 206 drives the cylindrical battery to rotate 360°. During this period, a group of projection testers 209 detect the outer diameter of the cylindrical battery at multiple locations to determine whether it is a qualified product;

[0083] The first push bar 314 pushes the second push bar 320 forward under the action of the push cylinder 312 until the holding part 321 opens. After the pneumatic clamp 206 inserts the cylindrical battery into the temporary storage slot 323, the first push bar 314 is reset, and the holding part 321 is extended under the action of the spring 319 to complete the holding of the cylindrical battery; the rotating cylinder 305 drives the angle plate 306 to rotate vertically 180°, so that the bottom of the cylindrical battery faces upward, and the bottom of the cylindrical battery is engraved under the engraving action of the upper engraving machine 304;

[0084] Finally, the engraving structure 3 is turned back, and the other side is also provided with the same structure as the loading structure 1 and the transfer structure 2, which is used for unloading and transferring the finished product after marking.

[0085] The present invention also provides a battery bottom marking method, comprising the following steps:

[0086] S1. Transporting the pallet with batteries through the roller line:

[0087] S2, the positioning assembly completes the positioning of the tray, specifically, the positioning of the tray is achieved through the cooperation between the positioning groove 108 and the positioning block 111;

[0088] S3, the transfer structure clamps the battery positioned in step S2, and measures the outer diameters of the battery at multiple locations using a set of projection testers 209;

[0089] S4, the transfer structure transfers the battery after the outer diameter is measured to the holding component, and the holding component holds the battery;

[0090] S5. Hold the assembly and flip it over so that the bottom of the battery faces upwards.

[0091] S6, using an engraving machine to mark the bottom of the battery after turning over in step S5;

[0092] S7, holding the assembly and flipping the battery after bottom marking in step S6, and inserting it into the tray of the blanking structure to complete the battery blanking.

[0093] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery bottom marking device, characterized in that: It includes: A feeding structure (1), the feeding structure (1) comprising a roller line, a tray placed on top of the roller line, and a positioning assembly arranged outside the roller line and used to position the tray, wherein a battery is inserted into the tray; A transfer structure (2), the transfer structure (2) comprising a support frame (201) mounted above the roller line, a transfer plate (205) disposed on the support frame (201) and movable along three axes, namely, X, Y, and Z, and a pneumatic clamp (206) fixed to the bottom of the transfer plate (205), the pneumatic clamp (206) being used to clamp the batteries on the tray; An engraving structure (3), the engraving structure (3) comprising a moving plate (303) moving along an X-axis, an angle plate (306) rotatably mounted on one side of the moving plate (303), a holding component disposed on the angle plate (306) and used to hold a battery, and an engraving machine (304) moving along a Y-axis, the engraving machine (304) being used to mark the bottom of the battery; A material unloading structure is arranged on the other side of the engraving structure (3), and the material unloading structure has the same structure as the material loading structure (1), and is used for unloading after the bottom of the battery is marked.

2. A battery bottom marking device according to claim 1, characterized in that: The tray comprises a tray bottom plate (103), a tray middle plate (104) integrally connected to the tray bottom plate (103), a tray top plate (105) integrally connected to the tray middle plate (104), a first through hole (106) penetrating the tray top plate (105) and the tray middle plate (104), and a second through hole (107) penetrating the tray bottom plate (103), wherein the diameter of the first through hole (106) is greater than the diameter of the second through hole (107), and the battery is inserted into the first through hole (106).

3. The battery bottom marking device according to claim 1, characterized in that: The positioning assembly comprises a positioning groove (108) opened on the outside of the pallet and a positioning block (111) movably arranged on the top of the roller line, and the positioning block (111) is inserted into the positioning groove (108) to complete the positioning of the pallet.

4. The battery bottom marking device according to claim 1, characterized in that: The transfer structure (2) further comprises a clamping block (207) fixed at the bottom of the pneumatic clamping jaw (206), an arc-shaped portion (208) arranged on the inner side of the clamping block (207), and a projection tester (209) arranged on one side of the roller line and arranged opposite to the projection tester (209), wherein the pneumatic clamping jaw (206) clamps the battery between the projection tester (209) and drives the battery to rotate, thereby completing the measurement of the outer diameter of the battery.

5. The battery bottom marking device according to claim 1, characterized in that: The holding assembly comprises a transition column (322) embedded in the angle plate (306), a temporary storage groove (323) vertically penetrating the transition column (322), a support plate (325) integrally connected to the bottom of the transition column (322), an avoidance hole (326) penetrating the support plate (325) and communicating with the temporary storage groove (323), a holding groove (327) provided on the outside of the transition column (322), a clamping plate (318) elastically provided on one side of the transition column (322), and a holding portion (321) provided on the clamping plate (318) close to the transition column (322); When the battery is inserted into the temporary storage slot (323), the clamping plate (318) moves toward the side of the transition column (322) to the holding portion (321) to hold the outer wall of the battery.

6. A battery bottom marking device according to claim 5, characterized in that: The holding assembly also includes a baffle (317) fixed on the top of the angle plate (306), a spring (319) arranged between the baffle (317) and the card plate (318), a second push bar (320) integrally connected to one side of the card plate (318), a pushing cylinder (312) fixed on the top of the moving plate (303), a push plate (313) connected to the pushing cylinder (312), and a first push bar (314) integrally connected to one side of the push plate (313) and matched with the second push bar (320).

7. A battery bottom marking device according to claim 6, characterized in that: The holding assembly also includes a guide portion (324) obliquely arranged at the top of the temporary storage groove (323), a slide rail (315) fixed to the top of the angle plate (306), and a slider (316) slidably mounted on the slide rail (315), and the clamping plate (318) is fixed on the slider (316).

8. The battery bottom marking device according to claim 1, characterized in that: The engraving structure (3) further comprises a first slide (301), a rotating cylinder (305) fixed on the top of the moving plate (303), a photoelectric sensor (309) adjustably arranged on one side of the first slide (301), and a sensing sheet (307) fixed on the bottom of the moving plate (303) and cooperating with the photoelectric sensor (309); the moving plate (303) is fixed on the first slide (301), and the angle plate (306) is fixed on the rotating cylinder (305).

9. A battery bottom marking device according to claim 8, characterized in that: The engraving structure (3) further comprises a side rail (308) fixed to one side of the first slide (301), a locking block (310) slidably connected to the side rail (308), and a locking nut (311) penetrating the locking block (310); the photoelectric sensor (309) is fixed on the locking block (310).

10. A battery bottom marking method, using the battery bottom marking device according to any one of claims 1 to 9, comprising the following steps: S1. Transporting the pallet with batteries through the roller line: S2, the positioning assembly completes the positioning of the tray; S3, the transfer structure clamps the battery positioned in step S2, and measures the outer diameter of the battery at multiple locations; S4, the transfer structure transfers the battery after the outer diameter is measured to the holding component, and the holding component holds the battery; S5. Hold the assembly and flip it over so that the bottom of the battery faces upwards. S6, using an engraving machine to mark the bottom of the battery after turning over in step S5; S7, holding the assembly and flipping the battery after the bottom marking in step S6, and completing the unloading of the battery by the unloading structure.

Images