Auxiliary material boxing mechanism of photovoltaic cell

Abstract

The utility model discloses a kind of auxiliary material boxing mechanisms of photovoltaic cell piece, belong to battery piece packaging technical field, including fixed gantry support, the top end parallel of the gantry support is provided with horizontal moving assembly, the horizontal moving assembly is connected with longitudinal moving assembly, longitudinal moving assembly below is equipped with crosspiece, the crosspiece both ends are equipped with suction assembly, the suction assembly is controlled by the control assembly at the intermediate position of the longitudinal moving assembly.Control.The utility model uses above-mentioned one kind of auxiliary material boxing mechanisms of photovoltaic cell piece, can quickly suck auxiliary material and box, mechanism is equipped with shaking device and detection device, effectively avoid multiple and leak, simultaneously by adjusting suction cup spacing and pressure size, can be compatible with multiple auxiliary materials, realize efficient, standard unified and high-quality auxiliary material boxing work.

Description

Technical Field

[0001] This utility model relates to the field of battery cell packaging technology, and in particular to a packaging mechanism for auxiliary materials of photovoltaic cells. Background Technology

[0002] With the large-scale development of the photovoltaic industry, automated equipment has been widely adopted in the photovoltaic cell packaging process, replacing traditional manual operations and achieving significant progress in efficiency improvement and standardization. However, existing automated auxiliary material packing equipment still has many technical limitations in practical applications, making it difficult to meet the high requirements of accuracy, compatibility, and stability in photovoltaic cell packaging.

[0003] Firstly, the compatibility of auxiliary materials is limited. The auxiliary materials used in photovoltaic cell packaging (such as corrugated paper, foam, sulfur-free paper, etc.) come in various specifications, ranging in size from 156mm×156mm to 210mm×210mm, with significant differences in material hardness. Existing equipment often has fixed suction cup spacing, limiting the pressure adjustment range. Changing to different specifications of auxiliary materials requires disassembling and adjusting the mechanical structure, which is complex and time-consuming, severely impacting production line changeover efficiency.

[0004] Secondly, the handling accuracy is insufficient. Because some auxiliary materials (such as sulfur-free paper) are prone to layering and sticking due to electrostatic adsorption or surface tension, existing equipment lacks an effective separation mechanism, often resulting in multiple cells being picked up at once. At the same time, the detection devices of some equipment are not sensitive enough, making it difficult to accurately identify missed or excessive picks, resulting in missing or redundant auxiliary materials after packaging, which affects the protection effect of the battery cells.

[0005] Third, the operational stability is poor. The linkage precision of the horizontal and vertical moving components of the existing equipment is insufficient, which can easily lead to positioning deviations when operating at high speeds, causing the auxiliary materials to be placed out of position. In addition, the air pressure regulation response of some control components is lagging, and the suction cup pressure fluctuates, which can easily cause the auxiliary materials to break or fall off, increasing the risk to packaging quality. Summary of the Invention

[0006] The purpose of this invention is to provide a packaging mechanism for auxiliary materials of photovoltaic cells, which can quickly pick up and pack auxiliary materials. The mechanism is equipped with a shaking device and a detection device to effectively avoid overfilling and underfilling. At the same time, by adjusting the suction cup spacing and pressure, it can accommodate a variety of auxiliary materials, achieving efficient, standardized and high-quality auxiliary material packaging.

[0007] To achieve the above objectives, this utility model provides a packaging mechanism for auxiliary materials of photovoltaic cells, including a fixed gantry support. A horizontal moving component is arranged parallel to the top of the gantry support. The horizontal moving component is connected to a vertical moving component. A horizontal plate is installed below the vertical moving component. Suction components are installed at both ends of the horizontal plate. The suction components are controlled by a control component located at the middle position of the vertical moving component.

[0008] Preferably, the gantry support consists of two columns and one crossbeam, the columns are provided with feet, and bolt holes are machined on the feet.

[0009] Preferably, the lateral movement component includes a guide rail arranged parallel to the crossbeam, a lateral servo motor is mounted at one end of the guide rail, and the lateral servo motor is connected to the longitudinal movement component via a synchronous belt.

[0010] Preferably, the longitudinal movement component includes a longitudinal servo motor disposed at the top end, the output end of the longitudinal servo motor being connected to a lead screw via a coupling, a vertical plate being mounted on the lead screw, and the vertical plate moving up and down along the lead screw.

[0011] Preferably, a connecting plate is installed at the lower end of the vertical plate, a vacuum integrated valve is installed above the connecting plate, the vacuum integrated valve is installed in a dual-valve parallel configuration, and the horizontal plate is installed below the connecting plate.

[0012] Preferably, the suction assembly includes a vacuum suction cup and a needle-type cylinder, the vacuum suction cup and the needle-type cylinder are fixed on the material suction plate, the vacuum suction cups are evenly distributed on the material suction plate, the center distance of the vacuum suction cups is adjusted according to the size of the auxiliary material, and the material suction plate is connected to the horizontal plate.

[0013] Preferably, the control components include a solenoid valve, a pressure regulating valve, and a silencer, wherein the solenoid valve is installed in a dual-valve parallel configuration.

[0014] Therefore, the present invention adopts the above-mentioned auxiliary material packing mechanism for photovoltaic cells, which can quickly pick up and pack auxiliary materials. The mechanism is equipped with a shaking device and a detection device to effectively avoid over-packing and under-packing. At the same time, by adjusting the suction cup spacing and pressure, it can accommodate a variety of auxiliary materials, achieving efficient, standardized and high-quality auxiliary material packing.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an embodiment of a photovoltaic cell auxiliary material packaging mechanism according to the present invention;

[0017] Figure 2 This is a schematic diagram of the longitudinal movement component, the suction component, and the control component of an embodiment of a photovoltaic cell auxiliary material packing mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the suction component of an embodiment of a photovoltaic cell auxiliary material packing mechanism according to the present invention;

[0019] Figure 4 This is a schematic diagram of the control components of an embodiment of a photovoltaic cell auxiliary material packing mechanism according to this utility model.

[0020] Figure Labels

[0021] 1. Suction assembly; 2. Horizontal plate; 3. Vacuum integrated valve; 4. Connecting plate; 5. Horizontal servo motor; 6. Control assembly; 7. Longitudinal movement assembly; 8. Synchronous belt; 9. Crossbeam; 10. Guide rail; 11. Gantry bracket; 12. Column; 13. Foot; 61. Solenoid valve; 62. Silencer; 63. Pressure regulating valve; 71. Longitudinal servo motor; 72. Coupling; 73. Lead screw; 74. Vertical plate; 101. Vacuum suction cup; 102. Material suction plate; 103. Needle cylinder; 104. Corrugated paper. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Example 1

[0025] This utility model provides a packaging mechanism for auxiliary materials of photovoltaic cells, the overall structure of which is as follows: Figure 1 As shown, the system includes a fixed gantry support 11, which consists of two uprights 12 and a crossbeam 9. The uprights 12 are equipped with feet 13, which have bolt holes for fixing to a suitable position. A guide rail 10 for a transverse movement component is parallel to the crossbeam 9 at the top of the gantry support 11. A transverse servo motor 5 is mounted at one end of the guide rail 10, and the transverse servo motor 5 is connected to a longitudinal movement component 7 via a synchronous belt 8.

[0026] like Figure 2As shown, a longitudinal servo motor 71 is mounted at the top of the longitudinal moving component 7. The output end of the longitudinal servo motor 71 is connected to a lead screw 73 via a coupling 72. A vertical plate 74 is mounted on the lead screw 73, and the vertical plate 74 moves up and down along the lead screw 73. An "L"-shaped connecting plate 4 is mounted at the lower end of the vertical plate 74. A vacuum integrated valve 3 is mounted above the connecting plate 4. The vacuum integrated valve 3 is installed in a dual-valve parallel configuration, acting on two suction components 1 at both ends of the horizontal plate 2. The horizontal plate 2 is mounted below the connecting plate 4.

[0027] The horizontal plate 2 has suction components 1 installed at both ends, and the suction components 1 are as follows: Figure 3 As shown, it includes four vacuum suction cups 101 and two needle cylinders 103. The four vacuum suction cups 101 and two needle cylinders 103 are fixed on the material picking suction plate 102. The four vacuum suction cups 101 are evenly distributed at the four corners of the material picking suction plate 102. The center distance of the four vacuum suction cups 101 can be adjusted according to the size of the auxiliary material. The material picking suction plate 102 is connected to the horizontal plate 2.

[0028] The suction component 1 is controlled by the control component 6 located at the middle position of the longitudinal movement component 7, and the control component 6 is as follows: Figure 4 As shown, it includes a solenoid valve 61, a pressure regulating valve 63, and a silencer 62. The solenoid valve 61 is installed in a parallel dual-valve configuration, which controls the operation of two vacuum integrated valves 3 respectively.

[0029] The control system of this organization is based on a PLC (Programmable Logic Controller). It communicates in real time with the horizontal servo motor 5, the vertical servo motor 71, the solenoid valve 61, and various sensors (position sensor, vacuum pressure sensor, auxiliary material detection sensor, etc.) via EtherCAT bus to coordinate multi-axis movements and component linkage, as detailed below:

[0030] Multi-axis motion coordination mechanism: The movement of the lateral and longitudinal moving components 7 adopts a "pre-planned trajectory + real-time correction" mode: The PLC generates the motion trajectory in advance based on the coordinates of the picking point and the packing point. The lateral servo motor 5 drives the longitudinal moving component 7 to move laterally along the guide rail 10 through the synchronous belt 8, and the longitudinal servo motor 71 drives the vertical plate 74 to move up and down through the lead screw 73. The two achieve position synchronization through bus communication (dynamic response time ≤30ms). For example, when the lateral movement reaches 50mm before the target area, the longitudinal moving component 7 starts the descent action in advance. Based on the coordinate values ​​fed back in real time by the position encoder, the PLC dynamically adjusts the speed of the two axes (lateral deceleration to 30% of the original speed, longitudinal acceleration to the preset value) to ensure that the picking suction plate 102 is accurately aligned with the auxiliary material and avoids motion jamming or misalignment.

[0031] Error recovery mechanism: If the vacuum pressure sensor detects abnormal adsorption pressure of the vacuum suction cup 101 (e.g., below the set threshold of 80 kPa), it is determined that the suction has failed. The PLC immediately triggers the longitudinal movement component 7 to stop descending and raise it by 50 mm. At the same time, it controls the needle cylinder 103 to vibrate at high frequency (10 times / second) to separate any potentially sticky auxiliary materials. The suction action is repeated after 2 seconds. If there are 3 consecutive failures, the system triggers an audible and visual alarm and suspends operation, waiting for manual intervention. If the position sensor detects that the lateral or longitudinal movement exceeds the preset soft limit (e.g., lateral movement exceeds the travel by ±2 mm, longitudinal movement exceeds ±1 mm), the PLC immediately cuts off the servo motor drive signal, triggers the brake, and records the current position. After the fault is cleared, the "return to origin → replan trajectory" process is automatically executed to avoid error accumulation.

[0032] Anti-mechanical deadlock and overrun design:

[0033] At the hardware level: Mechanical stops (hard limits) are set at both ends of the guide rail 10 and at the upper and lower ends of the lead screw 73, forming a double protection with the soft limit set by the PLC. The soft limit is triggered 5mm earlier than the hard limit, ensuring that the moving parts decelerate and stop before contacting the mechanical stops.

[0034] At the logical level: Before starting multi-axis motion, the PLC will check whether there is any cross conflict between the lateral and longitudinal motion trajectories (such as the longitudinal movement being forcibly lowered when the lateral movement is not in place). If there is a conflict, the logical sequence of "lateral movement in place → longitudinal movement" will be executed first. At the same time, priority will be set for the two-axis motion (longitudinal movement is given priority in the material picking stage, and lateral movement is given priority in the transfer stage) to avoid deadlock caused by conflicting action commands.

[0035] Redundancy design: The system has a built-in "emergency backoff" program. When the servo motor is detected to be overloaded (current exceeds 120% of the rated value) or the synchronous belt 8 is slipping (determined by pulse difference), it immediately executes a reverse micro-movement (lateral backoff of 10mm and longitudinal lift of 10mm) to relieve mechanical stress and replan the action to prevent parts from jamming.

[0036] Corrugated paper separation mechanism of needle cylinder 103: Addressing the interlayer adhesion problem that easily occurs in corrugated paper 104 due to low surface roughness, high stacking pressure, or environmental humidity, the needle cylinder 103 of this mechanism employs a specific structural design to achieve complete separation. Both needle cylinders 103 are installed at one corner of the edge of the material suction plate 102. Their piston rods are equipped with 3mm diameter rubber pins (to avoid scratching the corrugated paper surface), and the stroke is set to 2-3mm (suitable for corrugated paper with a thickness of 0.5-2mm). They are controlled in conjunction with the PLC via solenoid valve 61. When the vacuum suction cup 101 picks up the top corrugated paper 104, the PLC immediately triggers the needle cylinder 103 to perform a "rapid extension-pause" cycle: the piston rod quickly extends at a frequency of 0.2 seconds / time (10-15 times / second) to push the edge of the corrugated paper 104, and then retracts. Through local high-frequency vibration, the static friction and adsorption force between the layers are broken, so that the edge of the corrugated paper 104 is separated first, and then diffuses inward until the top corrugated paper 104 is completely separated from the lower layer.

[0037] For corrugated paper 104 with a thickness greater than 1 mm, the system automatically increases the number of vibrations (extending to 3 seconds) and, in conjunction with the pressure fine-tuning of the vacuum suction cup 101 (briefly reducing the vacuum level by 5 kPa), further weakens the following force of the lower layer of corrugated paper. Actual test data shows that this mechanism can increase the single-separation success rate of corrugated paper 104 to over 99.8%, effectively avoiding the "multi-piece gripping" problem caused by adhesion in traditional equipment (the separation success rate of traditional equipment is about 85%). At the same time, the action of the needle cylinder 103 and the lifting action of the longitudinal moving component 7 are coordinated in sequence—the vibration is initiated after the corrugated paper 104 is sucked up and lifted by 10 mm, ensuring that the corrugated paper 104 is in a suspended state during the separation process, without additional support interference, further improving the thoroughness of separation.

[0038] When this mechanism is in operation, it is fixed to a suitable position on the production line using bolts and anchors 13. When a packaging box containing photovoltaic cells moves to the position of this mechanism to wait for auxiliary materials to be packed, the horizontal servo motor 5 of this mechanism operates, driving the vertical moving component 7 to move laterally above the corrugated paper 104 auxiliary material box via the synchronous belt 8. The vertical servo motor 71 operates, transmitting power to the lead screw 73 via the coupling 72. The lead screw 73 converts the rotational motion of the vertical servo motor 71 into the up-and-down movement of the vertical plate 74. After the vertical plate 74 descends to the point where the vacuum suction cup 101 contacts the corrugated paper 104, the solenoid valve 61 operates, controlling the vacuum integrated valve 3 to draw a vacuum, and the vacuum suction cup 101 picks up the corrugated paper 104. The vertical plate 74 rises slightly (10mm), and the needle cylinder 103 starts vibrating at a preset frequency, thoroughly separating any possibly adhered corrugated paper 104 through high-frequency mechanical vibration.

[0039] The suction assembly 1 is equipped with a detection device (infrared sensor). The detection device of the suction assembly 1 synchronously detects the number of sheets to be picked up. If it determines that it is a single sheet, the operation continues. If multiple sheets are still detected, the shaking process is repeated. If the corrugated paper 104 is not successfully picked up, the vertical plate 74 descends again and the picking operation is repeated.

[0040] After successfully picking up a single sheet of corrugated paper 104, the longitudinal servo motor 71 operates to lift the vertical plate 74, while the transverse servo motor 5 operates, driving the longitudinal moving component 7 to move laterally above the packaging box containing the photovoltaic cells. The longitudinal servo motor 71 then lowers the vertical plate 74 until the corrugated paper 104 is in slight contact with the photovoltaic cells. The solenoid valve 61 operates, controlling the vacuum integrated valve 3 to release the vacuum. The vacuum suction cup 101 releases the corrugated paper 104, and then the longitudinal moving component 7 is lifted back to its initial position, completing one complete auxiliary material packing process and entering the next process cycle.

[0041] This device can pick up more than just corrugated paper 104; it can pick up other auxiliary materials depending on actual production needs. The spacing between the four vacuum suction cups 101 can be adjusted according to the size of the auxiliary material. The pressure generated by the vacuum suction cups 101 can be adjusted according to the weight of the auxiliary material via the pressure regulating valve 63, making it suitable for auxiliary materials of different weights. The silencer 62 reduces noise pollution during operation. Two solenoid valves 61 control the operation of two integrated vacuum valves 3, which in turn control the two suction components 1 to pick up auxiliary materials. If a suction component 1 fails to pick up auxiliary materials properly, the faulty circuit can be quickly identified for repair or replacement, improving maintenance efficiency and reducing maintenance costs.

[0042] Therefore, the present invention adopts the above-mentioned auxiliary material packing mechanism for photovoltaic cells, which can quickly pick up and pack auxiliary materials. The mechanism is equipped with a shaking device and a detection device to effectively avoid over-packing and under-packing. At the same time, by adjusting the suction cup spacing and pressure, it can accommodate a variety of auxiliary materials, achieving efficient, standardized and high-quality auxiliary material packing.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A packaging mechanism for auxiliary materials of photovoltaic cells, characterized in that: The system includes a fixed gantry support, with a horizontal moving component arranged parallel to the top of the gantry support. The horizontal moving component is connected to a vertical moving component. A horizontal plate is installed below the vertical moving component. Suction components are installed at both ends of the horizontal plate. The suction components are controlled by a control component located at the middle position of the vertical moving component. The gantry support consists of two columns and one crossbeam. The columns are equipped with feet, and bolt holes are machined on the feet. The lateral movement component includes a guide rail arranged parallel to the crossbeam, a lateral servo motor mounted at one end of the guide rail, and the lateral servo motor connected to the longitudinal movement component via a synchronous belt. The longitudinal movement component includes a longitudinal servo motor located at the top, the output end of which is connected to a lead screw via a coupling, a vertical plate is mounted on the lead screw, and the vertical plate moves up and down along the lead screw. The suction assembly includes a vacuum suction cup and a needle-type cylinder. The vacuum suction cup and the needle-type cylinder are fixed on the material suction plate. The vacuum suction cups are evenly distributed on the material suction plate. The center distance of the vacuum suction cups is adjusted according to the size of the auxiliary material. The material suction plate is connected to the horizontal plate.

2. The auxiliary material packaging mechanism for photovoltaic cells according to claim 1, characterized in that: A connecting plate is installed at the lower end of the vertical plate, and a vacuum integrated valve is installed above the connecting plate. The vacuum integrated valve is installed in a dual-valve parallel configuration, and the horizontal plate is installed below the connecting plate.

3. The auxiliary material packaging mechanism for photovoltaic cells according to claim 1, characterized in that: The control components include a solenoid valve, a pressure regulating valve, and a silencer, wherein the solenoid valve is installed in a dual-valve parallel configuration.

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