Battery cover plate and lower plastic plate ultrasonic welding device

Abstract

The present application relates to a kind of battery cover plate and lower plastic plate ultrasonic welding device, comprising: first feeding mechanism, with the conveyer belt of lateral delivery battery cover plate;Second feeding mechanism, with the feeding plate of around center autorotation, and multiple circumferential arrangement of mould plate are disassembled on feeding plate;Second top material plate can pass through mould plate and be lifted from lower to upper on the lower plastic plate stacked on it;The lowermost layer of lower plastic plate is gripped to the battery cover plate on the transfer plate by gripping mechanism;Transfer mechanism, located at the end of conveyer belt, with the transfer plate of up and down and lateral movement, can drive the battery cover plate on support frame lateral movement to welding plate;Ultrasonic welding mechanism, act on the battery cover plate and lower plastic plate on welding plate;The structure of the embodiment is simple and compact, not only realizes lower plastic plate and even feeding battery cover plate matching, avoids operator unable to timely replenish, and also makes it closely adhere between, easy and simple to operate, and better applicability.

Description

Ultrasonic welding device for battery cover and lower plastic plate Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to an ultrasonic welding device for battery cover plates and lower plastic plates. Background Technology

[0002] Ultrasonic welding utilizes high-frequency vibration waves transmitted to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects rub against each other to form a fusion between molecular layers. It has advantages such as automated operation, low cost, high efficiency, and good welding characteristics, and can therefore be used in applications such as power battery module welding and automotive wiring harness welding.

[0003] As shown in Figure 13, in the battery processing production line, the battery cover plate 910 is an important component of the battery module, which can ensure the stable operation of the battery module and effectively reduce the overcurrent. After the battery cover plate 910 is processed on the production line, it needs to be welded together with the lower plastic plate 920.

[0004] The following problems exist when welding the existing battery cover 910 and the lower plastic plate 920: 1. The battery cover 910 is often directly introduced after the previous process is completed. Its conveying is relatively uniform and the feeding is relatively fast. However, the lower plastic plate 920 needs to be replenished by on-site personnel in a timely manner when feeding. Otherwise, the number of lower plastic plates 920 will be insufficient, causing "failure" in the robotic arm's gripping, which will result in the subsequent lack of matching lower plastic plates 920 and battery cover 910 for welding.

[0005] 2. When the battery cover plate 910 and the lower plastic plate 920 are stacked together and transported to the welding mechanism, the existing structure mainly requires the operator to sort and place them on the welding plate 820, or to use a robotic arm to grab and place them. These two methods are inconvenient to operate in the actual production line system. For example, the robotic arm method requires a certain amount of movement space during the grabbing and placing process, while the ultrasonic welding mechanism 600 has a small space at the welding point, making it less applicable.

[0006] 3. Before welding, the battery cover 910 and the lower plastic plate 920 must be ensured to fit together to avoid the finished product not meeting the requirements or deviations between them causing a decrease in welding precision. Some existing mechanisms continuously convey the battery cover 910. After the robotic arm grasps the lower plastic plate 920, it must ensure the positioning of the battery cover 910 and move synchronously so that the lower plastic plate 920 can be accurately stacked on the battery cover 910. This requires the robotic arm to have a high precision level, so the cost is relatively high and the structure is relatively complex. Summary of the Invention

[0007] Therefore, it is necessary to provide an ultrasonic welding device for the battery cover and the lower plastic plate to address the above problems.

[0008] An ultrasonic welding device for a battery cover and a lower plastic sheet, comprising: components all arranged on a support housing:

[0009] The first feeding mechanism has a conveyor belt for transversely conveying battery cover plates, and a support frame for receiving battery cover plates is provided at the end of the conveyor belt.

[0010] The second feeding mechanism is located on the same side as the first feeding mechanism. It has a feeding plate that rotates around the center. Multiple mold plates are evenly arranged in the circumference on the feeding plate. Each mold plate has a through groove in the middle and guide rods on both sides to limit the placement of the plastic sheet on it. The second top plate is located below the feeding plate and can pass through the through groove to lift the lower plastic sheet from bottom to top.

[0011] The top layer of lower plastic sheet is gripped by the gripping mechanism and transferred to the battery cover plate at the transfer plate;

[0012] The transfer mechanism, located at the end of the conveyor belt, has a transfer plate that moves up and down and laterally via a drive mechanism. The transfer plate is equipped with a limiting mechanism for fixing the lower plastic plate and the battery cover, and can move the battery cover on the support frame laterally to the welding plate.

[0013] An ultrasonic welding mechanism, located on one side of the transfer mechanism, is used to weld the battery cover plate on the welding plate to the lower plastic plate.

[0014] In some embodiments, the conveyor belts are a pair, arranged longitudinally side by side and conveyed in conjunction, and a detection mechanism and a material ejection mechanism are sequentially provided along the conveying direction;

[0015] The top material mechanism has a top material box that runs vertically through the top, and a first top material plate that pushes the NG battery cover plate conveyed by the conveyor belt from below into the top material box. The inner side of the top material box is provided with a blocking mechanism that supports the bottommost NG battery cover plate.

[0016] In some embodiments, the blocking mechanism is a limiting block that rotates upward and springs back to a horizontal position. There are multiple limiting blocks arranged on opposite surfaces of the top material box. The limiting blocks allow the battery cover to pass through from bottom to top and support the battery cover after it has passed through.

[0017] In some embodiments, this embodiment further includes:

[0018] The sorting mechanism is located laterally on one side of the second feeding mechanism and has an adjusting plate that rotates around its center. The adjusting plate is provided with positioning block groups on both sides symmetrical about the center of rotation.

[0019] Each group of positioning blocks includes multiple positioning blocks capable of positioning the periphery of the lower plastic sheet;

[0020] The gripping mechanism includes a first and a second gripping tray for gripping the lower plastic sheet;

[0021] The first material picking plate moves between the feeding plate and the adjusting plate, while the second material picking plate moves between the adjusting plate and the transfer plate.

[0022] In some embodiments, the second material handling tray is mounted on the second sliding plate;

[0023] The fourth drive cylinder is fixed to the second support plate, and its telescopic end is connected to the second slide plate, driving it to slide up and down on the second support plate; the second support plate is installed on the first slide plate.

[0024] The third drive cylinder is fixed to the first support plate, and its telescopic end is connected to the first slide plate and drives it to move longitudinally on the first support plate.

[0025] The first feeding tray moves horizontally and vertically.

[0026] In some embodiments, the second feeding tray is provided with a plurality of suction nozzles, one end of which is connected to a negative pressure mechanism and the other end of which faces downward and can act on the lower plastic plate.

[0027] The second material receiving plate is equipped with a positioning rod on its periphery; the adjusting plate is equipped with positioning holes that match the positioning rod.

[0028] In some embodiments, the second feeding mechanism further includes a storage mechanism;

[0029] The material storage mechanism is located laterally close to the feed plate and includes: another mold plate mounted on the support box via a support plate, and another second top plate located below the mold plate that lifts the stacked lower plastic sheets from bottom to top.

[0030] In some embodiments, the drive mechanism includes:

[0031] The fifth drive cylinder is fixed on the third support plate, and its telescopic end is connected to the third slide plate, which drives it to move laterally across the third support plate.

[0032] The sixth drive cylinder is fixed on the third slide plate, and its telescopic end is connected to the transfer plate, driving it to move up and down.

[0033] In some embodiments, the limiting mechanism includes:

[0034] The positioning base plate has a groove for receiving the battery cover plate;

[0035] The top rod is located on both sides of the positioning base plate and fixed on the transfer plate. The automatic extension end of the top rod is connected to the positioning slider that slides on the transfer plate. The positioning slider will act on the lower plastic plate on the battery cover.

[0036] In some embodiments, a portion of the transfer plate is located within a transversely arranged strip groove of the support frame; the side of the strip groove is provided with a limiting plate that limits the side of the battery cover.

[0037] The ultrasonic welding device for the battery cover and the lower plastic plate described above has the following beneficial technical effects:

[0038] This embodiment uses multiple mold plates on the feeding plate and adjusts the mold plates at different positions by rotating the feeding plate, so that the second top plate can sequentially push the lower plastic plates in different mold plates, realizing continuous feeding of the lower plastic plates and matching with the uniformly fed battery cover plate, avoiding the inability of operators to replenish materials in time due to the single stacking of lower plastic plates.

[0039] In this embodiment, the transfer plate can be raised, lowered, and moved laterally. After receiving the battery cover, it can move laterally to a designated position, including the welding position at the welding plate and the fixed position where the gripping mechanism places the lower plastic plate. By moving up and down, the battery cover is received and placed, achieving continuous and uniform welding material feeding. The structure is simple and compact, ensuring that the battery cover and the lower plastic plate are stacked and fit tightly, avoiding the disadvantages of high precision requirements and high cost of using a robotic arm. In addition, the transfer plate will drive the battery cover and the lower plastic plate together to the welding position at the welding plate, making the operation convenient and simple, and with better applicability.

[0040] In some embodiments, a top material mechanism is provided, in which the first top material plate moves upward and pushes the NG battery cover from bottom to top into the top material box between a pair of conveyor belts, and can circulate the top material in sequence to realize that multiple NG battery cover plates are stacked in the top material box, thus avoiding welding of the NG battery cover plates to the lower plastic plate.

[0041] In some embodiments, a sorting mechanism is provided. The first picking tray moves laterally and vertically to pick up the lower plastic sheet from the top layer of the loading plate and place it onto the adjusting tray. Multiple positioning blocks on the adjusting tray are located around the lower plastic sheet to position it and ensure that each lower plastic sheet is in the same placement position. In addition, the adjusting tray can rotate, and the positioning block group is symmetrically arranged around the rotation center, which can realize the sorting, placement, picking, and loading of the first lower plastic sheet at the same time, improving the efficiency of sorting and loading the lower plastic sheet.

[0042] In some embodiments, the transfer plate is provided with a limiting mechanism for fixing the lower plastic plate and the battery cover.

[0043] The positioning base plate can support the battery cover. The automatic telescopic end of the top rod drives the positioning slider to move, so that the positioning slider acts on the lower plastic plate to limit the lower plastic plate and prevent the battery cover on the transfer plate and the attached lower plastic plate from shifting. Attached Figure Description

[0044] Figure 1 is a schematic diagram of a feeding device for lower plastic sheet provided in an embodiment of the present invention;

[0045] Figure 2 is a schematic diagram of the first feeding mechanism in Figure 1;

[0046] Figure 3 is a schematic diagram of the top material mechanism in Figure 2;

[0047] Figure 4 is a first-view schematic diagram of the second feeding mechanism in Figure 1;

[0048] Figure 5 is a schematic diagram of the second feeding mechanism in Figure 1 from a second perspective.

[0049] Figure 6 is a schematic diagram of the corresponding assembly of the second top plate and the upper plate in Figure 5;

[0050] Figure 7 is a schematic diagram of the corresponding assembly of the second top plate and mold plate in Figure 6;

[0051] Figure 8 is a schematic diagram of the sorting mechanism in Figure 1;

[0052] Figure 9 is a schematic diagram of the second material feeding tray in Figure 8;

[0053] Figure 10 is a schematic diagram of the corresponding assembly of the support frame and transfer mechanism in Figure 1;

[0054] Figure 11 is a schematic diagram of the transfer mechanism in Figure 10;

[0055] Figure 12 is a schematic diagram of the limiting mechanism in Figure 11;

[0056] Figure 13 is a schematic diagram of the battery cover and lower plastic plate in Figure 1;

[0057] In the diagram, 100 represents the supporting box.

[0058] 200. First feeding mechanism; 210. Conveyor belt; 220. Top feeding mechanism; 221. Top feeding box; 222. Limiting block; 223. Positioning plate; 224. First drive cylinder; 225. First top feeding plate.

[0059] 300. First material feeding tray;

[0060] 400, Second feeding mechanism; 410, Feeding plate; 420, Mold plate; 421, Through slot; 422, Guide rod; 430, First motor; 441, Second drive cylinder; 442, Second top plate; 450, Material storage mechanism.

[0061] 500. Sorting mechanism; 510. Moving mechanism; 511. Third drive cylinder; 512. First support plate; 513. First slide plate; 514. Fourth drive cylinder; 515. Second support plate; 516. Second slide plate; 520. Second picking plate; 521. Positioning rod; 522. Suction nozzle; 530. Adjustment plate; 531. Second motor.

[0062] 600. Ultrasonic welding mechanism;

[0063] 700. Transfer mechanism; 710. Fifth drive cylinder; 711. Third support plate; 712. Third sliding plate; 713. Sixth drive cylinder; 714. Transfer plate; 720. Limiting mechanism; 721. Top rod; 722. Positioning slider; 723. Positioning base plate; 800. Support frame; 810. Limiting plate; 820. Welding plate;

[0064] 910. Battery cover; 920. Lower plastic plate. Detailed Implementation

[0065] The invention will now be further described with reference to the accompanying drawings.

[0066] To facilitate understanding of the present invention, various embodiments as defined by the claims will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings, which include various specific details to aid this understanding, but these details should be considered merely exemplary. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Accordingly, those skilled in the art will recognize that variations and modifications can be made to the various embodiments described herein without departing from the scope of the invention as defined by the appended claims. Furthermore, descriptions of well-known functions and constructions may be omitted for clarity and brevity.

[0067] It will be apparent to those skilled in the art that the following description of various embodiments of the invention is provided for illustrative purposes only and is not intended to limit the invention as defined by the appended claims.

[0068] Throughout the specification and claims of this application, the words “comprising” and “including,” as well as variations thereof, such as “comprising of” and “including,” mean “including but not limited to,” and are not intended to exclude other components, elements, or steps. Features, elements, or characteristics described in connection with a particular aspect, embodiment, or example of the invention are to be understood as applicable to any other aspect, embodiment, or example described herein, unless incompatible therewith.

[0069] It should be understood that the singular forms “a,” “an,” and “the” include plural references unless the context explicitly specifies otherwise. The expressions “comprising” and / or “may comprise” as used in this invention are intended to indicate the presence of a corresponding function, operation, or element, and are not intended to limit the presence of one or more functions, operations, and / or elements. Furthermore, in this invention, the terms “comprising” and / or “having” are intended to indicate the presence of the features, quantities, operations, elements, and components disclosed in the applications, or combinations thereof. Therefore, the terms “comprising” and / or “having” should be understood as implying the additional possibility of one or more other features, quantities, operations, elements, and components, or combinations thereof.

[0070] In this invention, the expression "or" includes any or all combinations of the words listed together. For example, "A or B" can include either A or B, or it can include both A and B.

[0071] It should be understood that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is said to be "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or there may be an intervening element at the same time.

[0072] The terms "up," "down," "left," and "right" mentioned in the text are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms (such as those defined in common dictionaries) should be interpreted as having the meaning consistent with the relevant field and the context of this specification, and should not be interpreted in an idealized or overly formal sense unless expressly defined herein. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0074] Referring to Figures 1, 2, 4, 5, 7, and 10, in one embodiment of the present invention, an ultrasonic welding device for a battery cover and a lower plastic plate is provided, comprising components all arranged on a support housing 100:

[0075] The first feeding mechanism 200 has a conveyor belt 210 for transversely conveying the battery cover plate 910, and a support frame 800 for receiving the battery cover plate 910 is provided at the end of the conveyor belt 210.

[0076] The second feeding mechanism 400 is located on the same side as the first feeding mechanism 200. It has a feeding plate 410 that rotates around its center. Multiple mold plates 420 are detached and mounted on the feeding plate 410. Each mold plate 420 has a through groove 421 in the middle and guide rods 422 on both sides to limit the placement of the plastic sheet 920 stacked on it. The second top plate 442 is located below the feeding plate 410 and can move upward through the through groove 421 to lift the lower plastic sheet 920 from bottom to top.

[0077] The uppermost plastic sheet 920 is gripped by the gripping mechanism and placed onto the battery cover 910 at the transfer plate 714;

[0078] The transfer mechanism 700 is located at the end of the conveyor belt 210 and has a transfer plate 714 that is driven to move up and down and laterally by a drive mechanism. The transfer plate 714 is provided with a limiting mechanism 720 for fixing the lower plastic plate 920 and the battery cover 910, and can drive the battery cover 910 on the support frame 800 to move laterally onto the welding plate 820.

[0079] An ultrasonic welding mechanism 600 is located on one side of the transfer mechanism 700 and is used to weld the battery cover 910 on the welding plate 820 to the lower plastic plate 920 together.

[0080] Specifically, the support box 100 is the overall support and load-bearing structure of this embodiment, and its overall height can be matched with the previous process and the next process to achieve docking on the overall production line;

[0081] The first feeding mechanism 200 is used to feed the battery cover plate 910 and transport it to the end transfer mechanism 700. It adopts a traditional structure with a conveyor belt 210 and connects with the previous battery cover plate 910 processing step to ensure continuous feeding of the battery cover plate 910.

[0082] The second feeding mechanism 400 is used to feed the lower plastic plate 920 and grab it to the battery cover 910 which is already located at the transfer mechanism 700 through the gripping mechanism. That is, when the conveyor belt 210 transfers the battery cover 910 to the transfer plate 714, the gripping mechanism grabs the lower plastic plate 920 onto the battery cover 910.

[0083] The mold plate 420 is used to support the stacked lower plastic plates 920, thus forming a modular structure. It has a through groove 421 in the middle for the second top plate 442 to pass through, and guide rods 422 on both sides to limit the stacked lower plastic plates 920. For example, referring to Figure 13, since the lower plastic plates 920 have symmetrical through holes, the guide rods 422 can pass vertically through each lower plastic plate 920 to limit its movement.

[0084] The transfer mechanism 700 is used to receive the battery cover 910 and the lower plastic plate 920, so as to drive them to move laterally and weld them through the ultrasonic welding mechanism 600 when passing the welding plate 820. The transfer plate 714 is lifted and moved laterally by the drive mechanism. Its overall movement trajectory is to move upward to receive the battery cover 910, move laterally to move in / out or return to the initial position, and move downward to place the battery cover 910. In particular, the lateral movement of the transfer plate 714 is intermittent and can stop at a certain position and match the corresponding lifting to achieve continuous and uniform support of the battery cover 910 on the support frame 800, and facilitate matching with the lower plastic plate 920 grasped by the gripping mechanism. That is, the transfer plate 714 stops at a specific position, at which time the gripping mechanism moves to this specific position and attaches the lower plastic plate 920 to the battery cover 910.

[0085] The ultrasonic welding mechanism 600 uses high-frequency vibration waves to transmit to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects rub against each other to form a fusion between molecular layers. That is, the battery cover 910 and the lower plastic plate 920 are welded together by ultrasonic welding.

[0086] With the horizontal direction of Figure 1 as left and right and the transfer mechanism 700 located on the right side of the conveyor belt 210 as the direction for explanation, in this embodiment, during operation, the battery cover 910 enters the conveyor belt 210 from the previous process (such as the battery cover 910 assembly process) and is transferred from left to right by the conveyor belt 210 to the right support frame 800.

[0087] In the initial state, the transfer plate 714 is located at the left extreme position. It first moves upward, and the left end receives the battery cover plate 910 on the support frame 800, and then moves to the right.

[0088] Multiple lower plastic plates 920 are stacked on the mold plate 420 beforehand, and then the multiple mold plates 420 are evenly installed on the feeding plate 410 for feeding purposes. For example, there are four mold plates 420 on the feeding plate 410. When feeding, the gripping mechanism grips the uppermost lower plastic plate 920 of one of the mold plates 420 and moves it to the transfer plate 714, where it is attached to the top of the battery cover plate 910. After the uppermost lower plastic plate 920 is fed, the second top plate 442 moves upward to lift the stacked lower plastic plates 920 from bottom to top, replenishing the already loaded plates. The material position is maintained so that the uppermost lower plastic plate 920 is always at the same height, which facilitates quick gripping by the gripping mechanism and avoids the inconvenience of lifting and adjusting it. After all the lower plastic plates 920 on the same mold plate 420 are loaded, the loading plate 410 rotates so that another mold plate 420 is above the second top plate 442. For example, when there are four mold plates 420, the loading plate 410 rotates 90° clockwise / counterclockwise, and the second top plate 442 continues to lift and load the material. During this interval, the operator can replenish the empty mold plates 420.

[0089] Referring to Figure 6, the lower middle part of the feeding plate 410 can be connected to the first motor 430 via a coupling, reducer, or other structures. The second top plate 442 can be mounted on the second drive cylinder 441. To ensure that the uppermost lower plastic plate 920 is always at the same height during replenishment, a first photoelectric sensor can be installed near the uppermost lower plastic plate 920. When the uppermost lower plastic plate 920 is fed, the controller receives the signal and controls the second drive cylinder 441 to lift the stacked lower plastic plates 920 from bottom to top to replenish the already fed position. After the material replenishment is completed, the controller controls the second top plate 442 to stop moving. To ensure that when the other mold plate 420 is fed after the top plate 410 rotates, a second photoelectric sensor for detecting the mold plate 420 can be set at the position of the second top plate 442. After the top plate 410 rotates, the second photoelectric sensor detects the mold plate 420. The controller receives the signal and controls the first motor 430 to stop moving. When the first photoelectric sensor cannot detect the lower plastic plate 920 on the mold plate 420, the controller controls the first motor 430 to start.

[0090] The battery cover 910 and the attached lower plastic plate 920 at the transfer plate 714 move together to the welding plate 820. At this time, the transfer plate 714 moves downward, and the welding plate 820 can support the battery cover 910 and the lower plastic plate 920. The ultrasonic welding mechanism 600 is started to weld the battery cover 910 and the lower plastic plate 920 together. After the welding is completed, the transfer plate 714 moves upward to support again and moves to the right to move the welded battery cover 910 and the lower plastic plate 920 to the next process to complete the overall welding work.

[0091] In this embodiment, multiple mold plates 420 are provided on the feeding plate 410. The rotation of the feeding plate 410 is used to adjust the mold plates 420 at different positions, so that the second top plate 442 can sequentially top the lower plastic plates 920 in different mold plates 420, thereby continuously feeding the lower plastic plates 920. This avoids the problem of operators being unable to replenish materials in time due to the single stacking of the lower plastic plates 920, and also avoids the problem of the lower plastic plates 920 not matching the battery cover plate 910 on the transfer plate 714.

[0092] The transfer plate 714 can be raised, lowered, and moved laterally. After receiving the battery cover 910, it can move laterally to designated positions, including the welding position at the welding plate 820 and the fixed position where the gripping mechanism places the lower plastic plate 920. By moving up and down, the battery cover 910 is received and placed, achieving continuous and uniform welding material feeding. The structure is simple and compact, ensuring that the battery cover 910 and the lower plastic plate 920 are stacked and closely fitted, avoiding the disadvantages of high precision requirements and high cost of using a robotic arm. In addition, the transfer plate 714 will drive the battery cover 910 and the lower plastic plate 920 together to the welding position at the welding plate 820, making the operation convenient and simple, and improving its applicability.

[0093] Referring to Figures 2 and 3, in some embodiments, the conveyor belts 210 are a pair, arranged longitudinally side by side and linked for conveying, and a detection mechanism and a top material mechanism 200 are sequentially provided along the conveying direction;

[0094] The top material mechanism 200 has a top material box 221 that runs vertically through, and a first top material plate 225 that pushes the NG battery cover plate 910 conveyed by the conveyor belt 210 into the top material box 221 from below. The top material box 221 is provided with a blocking mechanism that supports the bottom NG battery cover plate 910.

[0095] Specifically, the battery cover 910 is an important component of the battery module, and its quality directly affects the quality of the battery module. Therefore, before welding the battery cover 910 to the lower plastic plate 920, it is necessary to test and eliminate NG battery cover 910, that is, to avoid welding NG battery cover 910 to the lower plastic plate 920.

[0096] The testing agency can inspect the positive and negative terminals, burrs, and the front and back of the battery cover 910. The lower end of the first top plate 225 is connected to the first drive cylinder 224 for vertical movement. The battery cover 910 is located on a pair of conveyor belts 210 and is transported laterally. When the testing agency detects an NG battery cover 910, the first top plate 225 moves upward and pushes the passing NG battery cover 910 from bottom to top into the top material box 221 between the pair of conveyor belts 210. The NG battery cover 910 is stacked in the top material box 221, and then the pushing-out NG battery cover 910 is supported by the blocking mechanism to prevent it from falling. Then the first top plate 225 moves downward to the initial position. When a subsequent NG battery cover 910 passes by, the first top plate 225 continues to push out, and so on, so that multiple NG battery cover 910s are stacked in the top material box 221.

[0097] Referring to Figure 3, in some embodiments, the blocking mechanism may be a plurality of automatic telescopic rods disposed on the inner wall of the top material box 221. That is, when the first top material plate 225 pushes the NG battery cover 910 into the top material box 221, the telescopic rods automatically extend to support the stacked NG battery cover 910. Preferably, the blocking mechanism is a limiting block 222 that rotates upward and springs back to the horizontal. There are multiple limiting blocks 222, which are arranged on opposite surfaces of the top material box 221. The limiting blocks 222 allow the battery cover 910 to pass through from bottom to top and support the battery cover 910 after it has passed through.

[0098] For example, the limiting block 222 is rotatably mounted on the positioning hole of the top material box 221 via a support shaft, with one side located inside the top material box 221. A torsion spring is fitted on the support shaft. Under the action of the torsion spring, the limiting block 222 presses against the lower end face of the positioning hole. When the NG battery cover 910 enters the top material box 221 from bottom to top, the NG battery cover 910 is first squeezed by the limiting block 222, causing it to rotate upward and compress the torsion spring. When the NG battery cover 910 is raised to a certain height, under the action of the torsion spring, the limiting block 222 rotates and is limited by the lower end face of the positioning hole, so that the limiting block 222 is in a horizontal state. This method adopts a non-automatic structure, and the overall structure is simple and compact, avoiding the need to add sensors when using an automatic telescopic structure. In addition, a positioning plate 223 for positioning the stacked battery cover 910 can be provided on the periphery of the inner wall of the top material box 221 to prevent the stacked battery cover 910 from shifting.

[0099] Referring to Figures 4, 5, and 8, in some embodiments, the device further includes:

[0100] The sorting mechanism 500 is located laterally on one side of the second feeding mechanism 400 and has an adjusting plate 530 that rotates around its center. The adjusting plate 530 is provided with positioning block groups on both sides symmetrical about the center of rotation.

[0101] Each group of positioning blocks includes multiple positioning blocks capable of positioning the lower plastic sheet around its 920° perimeter.

[0102] The gripping mechanism includes a first gripping tray 300 and a second gripping tray 520 for gripping the lower plastic sheet 920;

[0103] The first material picking plate 300 moves between the loading plate 410 and the adjusting plate 530, and the second material picking plate 520 moves between the adjusting plate 530 and the transfer plate 714.

[0104] Specifically, in actual production, the positions of the plastic plates 920 stacked on the mold plate 420 cannot be completely consistent. This is because the upper surface of the lower plastic plate 920 has an uneven structure, resulting in misalignment and deviation between adjacent lower plastic plates 920. Therefore, when the gripping mechanism picks up the lower plastic plates 920 and transfers them to the transfer plate 714, there is a certain positional offset between the different lower plastic plates 920 and the battery cover plate 910, which will affect the welding between them. Therefore, a sorting mechanism 500 is set on one side of the second feeding mechanism 400 to uniformly adjust the placement of the lower plastic plates 920, ensuring that the lower plastic plates 920 are in the same position when the gripping mechanism picks them up.

[0105] The first picking tray 300 moves horizontally and vertically to pick up the uppermost lower plastic plate 920 of the loading plate 410 onto the adjusting tray 530. The adjusting tray 530 has a set of positioning blocks for positioning the lower plastic plate 920. Multiple positioning blocks are located around the lower plastic plate 920 to position the lower plastic plate 920, so as to ensure that each lower plastic plate 920 is in the same placement position. The second picking tray 520 then moves vertically and vertically to pick up the lower plastic plate 920 on the adjusting tray 530 onto the transfer plate 714, so that it fits against the battery cover plate 910.

[0106] The adjusting plate 530 can rotate, and the positioning blocks are symmetrically arranged around the center of rotation. The purpose is that the first picking plate 300 places the lower plastic sheet 920 on the adjusting plate 530, and the second picking plate 520 picks up the lower plastic sheet 920 from the adjusting plate 530. The two can be performed simultaneously, and the adjusting plate 530 can be adjusted by rotating 180°, thereby improving the efficiency of sorting and feeding the lower plastic sheet 920. In addition, the lower end of the adjusting plate 530 can be connected to the second motor 531 through a coupling, reducer or other structure, or the adjusting plate 530 can be connected to a hydraulic drive structure.

[0107] Referring to Figure 8, taking the movement of the second material picking plate 520 as an example, the second material picking plate 520 moves longitudinally and vertically through the moving mechanism 510; that is, the moving mechanism includes the fourth drive cylinder 514 and the third drive cylinder 511, that is, the second material picking plate 520 is mounted on the second slide plate 516.

[0108] The fourth drive cylinder 514 is fixed on the second support plate 515, and its telescopic end is connected to the second slide plate 516 and drives it to slide up and down on the second support plate 515; the second support plate 515 is installed on the first slide plate 513.

[0109] The third drive cylinder 511 is fixed on the first support plate 512, and its telescopic end is connected to the first slide plate 513 and drives it to move longitudinally on the first support plate 512.

[0110] The first material feeding plate 300 moves horizontally and vertically.

[0111] Specifically, the third drive cylinder 511 is activated, driving the first slide plate 513 to move longitudinally on the first support plate 512. The fourth drive cylinder 514 is activated, driving the second slide plate 516 to move up and down on the second support plate 515. The second support plate is installed on the first slide plate 513, thus realizing the longitudinal and up-and-down movement of the second material picking plate 520.

[0112] Similarly, the first feeding tray 300 can also use a similar mechanism, the difference being that one of the drive cylinders extends and retracts in the lateral direction, and the other drive cylinder extends and retracts in the vertical direction.

[0113] Referring to Figure 9, in some embodiments, the second material feeding tray 520 is provided with a plurality of suction nozzles 522, one end of which is connected to the negative pressure mechanism and the other end faces downward and can act on the lower plastic plate 920.

[0114] The second material receiving plate 520 is provided with a positioning rod 521 on its periphery; the adjusting plate 530 is provided with a positioning hole that matches the positioning rod 521;

[0115] Specifically, when the second material picking tray 520 moves vertically and vertically, causing the suction nozzle 522 to act on the lower plastic plate 920, the negative pressure mechanism is activated, generating negative pressure to "grab" the lower plastic plate 920. When the second material picking tray 520 moves downward, the positioning rod 521 is inserted into the positioning hole of the adjusting tray 530, which can make fine adjustments to the overall position, ensuring the gripping position of the lower plastic plate 920 and improving its accuracy.

[0116] Similarly, the first material feeding tray 300 can also be the structure of the second material feeding tray 520, the difference being that the positioning rod 521 is not provided.

[0117] Referring to Figure 5, in some embodiments, the second feeding mechanism 400 further includes a storage mechanism 450;

[0118] The storage mechanism 450 is laterally close to the feed plate 410 and includes: another mold plate 420 mounted on the support box 100 via a support plate, and another second top plate 442 located below the mold plate 420 that lifts the stacked lower plastic plate 920 from bottom to top.

[0119] Specifically, the storage mechanism 450 can pre-store the lower plastic plates 920. That is, when the lower plastic plates 920 of multiple mold plates 420 on the feeding plate 410 have been fed and have not been effectively replenished, the first picking tray 300 is adjusted laterally to be above the storage mechanism 450, and then moves downward to perform negative pressure adsorption on the uppermost lower plastic plate 920 of the mold plate 420. Similarly, after the uppermost lower plastic plate 920 is fed, the corresponding second top plate 442 moves upward to lift the stacked lower plastic plates 920 from bottom to top to replenish the already fed position. At this time, the operator can replenish the lower plastic plates 920 on the feeding plate 410 in time, and can issue an alarm signal when appropriate. After the lower plastic plates 920 on the feeding plate 410 are replenished, the first picking tray 300 is adjusted laterally to be above the feeding plate 410 and continues to adsorb and feed the lower plastic plates 920 on the feeding plate 410.

[0120] Referring to Figure 11, in some embodiments, the drive mechanism includes:

[0121] The fifth drive cylinder 710 is fixed on the third support plate 711, and its telescopic end is connected to the third slide plate 712, which drives it to move laterally across the third support plate 711.

[0122] The sixth drive cylinder 713 is fixed on the third slide plate 712, and its telescopic end is connected to the transfer plate 714 and drives it to move up and down.

[0123] Specifically, the fifth drive cylinder 710 is activated, causing the third slide plate 712 to move laterally on the third support plate 711. The sixth drive cylinder 713 is activated, causing the transfer plate 714 to move up and down. Thus, the transfer plate 714 can move laterally and vertically. In addition, to ensure that the transfer plate 714 moves laterally at equal intervals and moves up and down when resting, so that the transfer plate 714 can move the battery cover 910 and the lower plastic plate 920 to a specific position, a sensor for detecting the position of the transfer plate 714, such as a photoelectric sensor, can be installed at an appropriate position on the support box 100. When the transfer plate 714 moves laterally to a specific position, the controller receives the sensing signal and controls the fifth drive cylinder 710 to stop and the sixth drive cylinder 713 to start. When the corresponding processing is completed at the specific position (such as welding or receiving), the controller controls the sixth drive cylinder 713 to stop and the fifth drive cylinder 710 to start.

[0124] It should also be noted that the fifth drive cylinder 710 can be an electric cylinder or a servo motor. When a servo motor is used, the output end of the servo motor is connected to a horizontally arranged screw rod, and the screw rod is threaded to the lug seat below the third slide plate 712. The screw rod drives the third slide plate 712 to slide laterally, which results in higher precision. Furthermore, a linear slide rail can be set between the relative sliding positions, such as between the third slide plate 712 and the third support plate 711.

[0125] Referring to Figures 12 and 13, in some embodiments, the limiting mechanism 720 includes:

[0126] The positioning base plate 723 has a groove for receiving the battery cover plate 910;

[0127] The push rod 721 is located on both sides of the positioning base plate 723 and fixed on the transfer plate 714. The automatic extension end of the push rod 721 is connected to the positioning slider 722 sliding on the transfer plate 714. The positioning slider 722 will act on the lower plastic plate 920 on the battery cover 910.

[0128] Specifically, before the ultrasonic welding mechanism 600 is started, in order to prevent the battery cover 910 on the transfer plate 714 and the attached lower plastic plate 920 from shifting, the positioning base plate 723 can support the battery cover 910 at this time. The automatic extension end of the top rod 721 drives the positioning slider 722 to move, so that the positioning slider 722 acts on the lower plastic plate 920 to limit the lower plastic plate 920 and prevent it from shifting during the transportation and welding process.

[0129] Referring to Figures 10 and 13, in some embodiments, a portion of the transfer plate 714 is located within a transversely arranged strip groove of the support frame 800; the side of the strip groove is provided with a limiting plate 810 that limits the side of the battery cover 910.

[0130] Specifically, when the battery cover 910 is conveyed to the support frame 800 by the conveyor belt 210, the limiting plate 810 first receives the battery cover 910 and can limit its position. For example, the limiting plate 810 is provided with a groove that matches the battery cover 910. After the battery cover 910 is conveyed, it is directly located in the groove for limiting. It is then received upward by the transfer plate 714 and moved laterally for conveying.

[0131] In the above description, although expressions such as "first" and "second" may be used to describe various elements of the invention, they are not intended to limit the corresponding elements. For example, the above expressions are not intended to limit the order or importance of corresponding elements. The above expressions are used to distinguish one component from another.

[0132] The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. Singular expressions include plural expressions unless there are significant differences in context or approach between them.

[0133] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

[0134] Those skilled in the art will understand that the technical features of the above embodiments can be omitted, added, or combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as the combination of these technical features does not contradict each other, and simple transformations that those skilled in the art can conceive of, as well as structural transformations that adapt to and functionally modify the prior art, should be considered within the scope of this specification.

[0135] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that although the present invention has been shown and described with reference to various embodiments, those skilled in the art can make various modifications and improvements in form and detail without departing from the concept of the present invention, and without departing from the scope of the invention as defined by the appended claims. All such modifications and improvements fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An ultrasonic welding device for a battery cover and a lower plastic sheet, comprising: All components are arranged on the support housing (100): a first feeding mechanism (200), having a conveyor belt (210) for transversely conveying the battery cover plate (910), and a support frame (800) for receiving the battery cover plate (910) at the end of the conveyor belt (210); characterized in that it further includes: a second feeding mechanism (400), located on the same side as the first feeding mechanism (200), having a feeding plate (410) that rotates around a center, and having multiple circumferentially evenly arranged mold plates (420) disassembled and assembled on the feeding plate (410); each mold plate (420) has a central part provided The conveyor belt has a through groove (421) and guide rods (422) on both sides to limit the lower plastic sheet (920) stacked on top of it. The second top plate (442) is located below the top plate (410) and can pass through the through groove (421) to lift the lower plastic sheet (920) from bottom to top. The uppermost lower plastic sheet (920) is gripped by the gripping mechanism and placed on the battery cover (910) at the transfer plate (714). The transfer mechanism (700) is located at the end of the conveyor belt (210) and has a transfer plate (714) that moves up and down and laterally through a drive mechanism. The transfer plate (714) is provided with a limiting mechanism (720) for fixing the lower plastic plate (920) and the battery cover (910), and can drive the battery cover (910) on the support frame (800) to move laterally to the welding plate (820); the ultrasonic welding mechanism (600) is set on one side of the transfer mechanism (700) and is used to weld the battery cover (910) on the welding plate (820) to the lower plastic plate (920); the sorting mechanism (500) is laterally located on one side of the second feeding mechanism (400) and has a winding mechanism. The center-rotating adjustment plate (530) has positioning block groups on both sides symmetrical about the rotation center; each positioning block group includes multiple positioning blocks that can position the lower plastic plate (920) around its periphery; the gripping mechanism includes a first picking plate (300) and a second picking plate (520) for gripping the lower plastic plate (920); the first picking plate (300) moves between the upper plate (410) and the adjustment plate (530), and the second picking plate (520) moves between the adjustment plate (530) and the transfer plate (714).

2. The ultrasonic welding device for the battery cover and the lower plastic plate according to claim 1, characterized in that, The conveyor belts (210) are a pair, arranged longitudinally side by side and linked for conveying. Along the conveying direction, a detection mechanism and a top material mechanism (220) are arranged in sequence. The top material mechanism (220) has a top material box (221) that runs through the top and bottom, and a first top material plate (225) that pushes the NG battery cover plate conveyed by the conveyor belt (210) from the bottom into the top material box (221). The inner side of the top material box (221) is provided with a blocking mechanism that supports the bottommost NG battery cover plate.

3. The ultrasonic welding device for the battery cover and the lower plastic plate according to claim 2, characterized in that, The blocking mechanism is a limiting block (222) that rotates upward and springs back to the horizontal. There are multiple limiting blocks (222) arranged on opposite surfaces of the top material box (221). The limiting blocks (222) allow the battery cover (910) to pass through from bottom to top and support the battery cover (910) after it passes through.

4. The ultrasonic welding device for the battery cover and the lower plastic plate according to claim 1, characterized in that, The second material picking disc (520) is mounted on the second slide plate (516); the fourth drive cylinder (514) is fixed on the second support plate (515), and its telescopic end is connected to the second slide plate (516) and drives it to slide up and down on the second support plate (515); the second support plate (515) is mounted on the first slide plate (513); the third drive cylinder (511) is fixed on the first support plate (512), and its telescopic end is connected to the first slide plate (513) and drives it to move longitudinally on the first support plate (512); the first material picking disc (300) moves in the horizontal and vertical directions.

5. The ultrasonic welding device for the battery cover and the lower plastic plate according to claim 4, characterized in that, The second material feeding tray (520) is provided with multiple suction nozzles (522). One end of the suction nozzle (522) is connected to the negative pressure mechanism, and the other end faces downward and can act on the lower plastic plate (920). The second material feeding tray (520) is provided with positioning rods (521) on its periphery. The adjustment tray (530) is provided with positioning holes that match the positioning rods (521).

6. The ultrasonic welding device for the battery cover and the lower plastic plate according to claim 4, characterized in that, The second feeding mechanism (400) also includes a storage mechanism (450); the storage mechanism (450) is laterally close to the feeding plate (410) and includes: another mold plate (420) mounted on the support box (100) via a support plate, and another second top plate (442) located below the mold plate (420) to lift the stacked lower plastic plate (920) from bottom to top.

7. The ultrasonic welding device for the battery cover and the lower plastic plate according to claim 6, characterized in that, The driving mechanism includes: a fifth driving cylinder (710), which is fixed on the third support plate (711), and its telescopic end is connected to the third slide plate (712) and drives it to move laterally on the third support plate (711); and a sixth driving cylinder (713), which is fixed on the third slide plate (712), and its telescopic end is connected to the transfer plate (714) and drives it to move up and down.

8. The ultrasonic welding device for the battery cover and the lower plastic plate according to claim 7, characterized in that, The limiting mechanism (720) includes: a positioning base plate (723) having a groove for receiving the battery cover plate (910); a top rod (721) located on both sides of the positioning base plate (723) and fixed on the transfer plate (714), the automatic extension end of the top rod (721) being connected to a positioning slider (722) sliding on the transfer plate (714), and the positioning slider (722) acting on the lower plastic plate (920) on the battery cover plate (910).

9. The ultrasonic welding device for the battery cover and the lower plastic plate according to claim 8, characterized in that, A portion of the transfer plate (714) is located in a horizontally arranged strip groove of the support frame (800); the side of the strip groove is provided with a limiting plate (810) that limits the side of the battery cover (910).

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