Industrial Stacker Machine

Specification

This industrial stacker machine automates the complete Z-folding stacking workflow for prismatic cells. The process begins with the automatic feeding of anode and cathode sheets from magazines and the continuous unwinding of separator film. A central robotic unit precisely picks each electrode, while a patented folding mechanism creates a continuous separator "Z" that envelops each layer.

Each electrode is then inserted into the folded separator pocket with impeccable alignment, building the stack layer by layer. Critical in-line vision inspection systems verify the position of every sheet, rejecting misaligned components to ensure zero-defect stacks. Upon completion, the finished stack is automatically compacted to a preset thickness and transferred to the next station for casing. This seamless, closed-loop process eliminates manual handling, maximizes yield, and guarantees the structural integrity and consistency of every battery core.

Equipment Working Principle

This machine utilizes a robotic arm that moves back and forth to pick up electrode sheets from the negative and positive electrode hoppers. Through secondary positioning, the sheets are alternately placed on the stacking platform. The stacking platform moves left and right to receive the negative and positive electrode sheets, while simultaneously forming a Z-shaped winding of the separator film. This process is repeated to complete the stacking and assembly of an entire battery cell.

Workflow:
The positive and negative electrode robotic arms use suction cups to pick up the electrode sheets from the material trays. After precise positioning by a secondary positioning mechanism, the sheets are stacked on the stacking platform; the separator film is actively unwound, passes through a tension control mechanism, and is introduced to the stacking platform; the stacking platform moves back and forth to position the separator film for electrode placement; after stacking is complete, the assembly is transferred by a robotic arm, the separator film is heat-cut, and adhesive is automatically applied; the completed cell is automatically transferred to the unloading station and automatically unloaded onto a tray.

Equipment Features

1) The equipment's exterior consists of an aluminum profile upper frame and a painted square tube lower support frame, featuring a three-dimensional linear design that is aesthetically pleasing and easy to maintain;
2) Both positive and negative electrodes are configured with single material slots;
3)The electrode sheets are equipped with a secondary positioning mechanism, using a positioning method with movable side stops based on the center of the electrode sheet, greatly reducing friction damage to the electrode sheets and avoiding contact with the side stops during the post-shaping sheet removal process;
4)The stacking robotic arm is driven by a high-speed linear servo module, achieving high-speed, stable, and precise positioning;
5)The robotic arm's vacuum pick-and-place system is stable and reliable, with automatic confirmation and memory functions for successful or unsuccessful material handling;
6)The stacking table's repositioning is servo-controlled, resulting in fast speed and accurate stacking.
7)The diaphragm unwinding tension is constant, and continuous web guiding ensures neat and consistent winding;
8)A programmable logic controller (PLC) is used for automatic control, and a touch screen provides a user-friendly interface;
9)The number of stacked layers can be preset;
10)It has a stacking quantity memory function and production statistics function, which can be set via the touch screen;
11)It has complete manual debugging and automatic operation functions;
12)All working parts are protected by the machine frame and safety doors, ensuring the safety of both the machine and personnel.
13)The overall structure of the machine is simple, the operation is safe and stable, the control is reliable, and the operation is convenient.

Main components and functions

1)Material feeding mechanism: Single material chute configuration;
2)Separator film feeding and correction mechanism: Tensioning shaft for material loading and tension roller for material unwinding, with automatic precision correction of material path;
3)Pick-and-place motion mechanism: Alternating left and right material picking and placing, driven by a servo motor-controlled high-speed linear motion module, switching between the material hopper, secondary positioning table, and stacking table;
4)Stacking table mechanism: Servo motor-controlled lifting and lowering stacking table, with servo motor control for reciprocating motion between positive and negative electrodes, collecting the electrodes and folding the separator film in a Z-shape;
5)Clamping mechanism: Servo motor-driven clamping mechanism for X-Y bidirectional compound motion, clamping and positioning the electrodes and separator film;
6)Electrode pick-and-place mechanism: A cylinder controls a vacuum suction cup to achieve staggered picking and placing of positive and negative electrodes;
7)Tape application mechanism: A material preparation device cuts the adhesive tape to a fixed length and applies it to the end of the separator film to prevent the battery cell from loosening;
8)Unloading mechanism: The hot-pressed battery cells are sent to the unloading position, and the stacking and collection process is automatically detected.
9) Electrical control:
It uses a programmable logic controller (PLC) for automatic control and a touch screen for human-machine interface. It features tension control, automatic deviation correction, and a high-speed servo motion control module.

Equipment Specifications and Technical Parameters

1. Configuration Requirements
• Input Power: 380V±10%～50Hz; Power: 10 KW
• Ambient Temperature: 5°C～45°C
• Compressed Air Source: 0.5～0.7Mpa 0.5m³/min
2. Equipment Dimensions: Length x Width x Height ≈ 2550 x 2650 x 2050 mm
3. Equipment Weight: Approximately 3.5 T
4. Applicable Specifications: (Electrode Sheets) Length 100-330mm, Width 80-180mm
5. Electrode Sheet Feeders: 1 negative electrode, 1 positive electrode
6. Output Method: Robotic arm places sheets in a fixed position, automatic stacking
7. Unwinding Method: Active tension unwinding with expansion shaft, automatic correction, tension control
8. Material roll diameter: < 200mm
9. Finished battery cell thickness: 5-22mm
10. Separator alignment accuracy: ≤±0.3 mm (end face alignment)
11. Electrode stacking accuracy: ≤±0.5mm (center deviation value)
12. Separator and electrode stacking accuracy (longitudinal): ≤±0.3 mm (center deviation value)
13. Stacking speed: ≤2.0 seconds/piece