I. System Definition and Advantages 

The lifting and turning feeding device is an integrated feeding device for metal scrap briquetting machines. It automatically grabs, lifts, transfers, and turns a standardized transfer cart (or hopper) pre-filled with metal scraps, dumping the material cleanly and in one go into the hopper of the briquetting machine.

Core Advantages:

1. High Reliability: Avoids the uncertainty of grabbing from loose material piles, ensuring stable and reliable operation.

2. High Cleanliness: Material is transported and dumped in a sealed cart, minimizing dust and spillage.

3. High Efficiency: Allows for large-scale production by dumping large quantities of material at once.

4. Easy Maintenance: The mechanical structure is relatively standard, and the cart can be prepared and cleaned offline.

5. Controllable Process: The weight of material in each cart can be pre-weighed to ensure consistency of raw materials for briquetting.

Parameter:

II. Detailed System Composition and Workflow

1. Main Components:

Standardized Cart/Hopper: A wheeled container with an open top and a lockable discharge door at the front or bottom. This is the key logistics carrier of the system.

Lifting and flipping Main Unit:

Frame Structure: Sturdy gantry frame or C-arm.

Lifting Mechanism: Wire rope winch or hydraulic cylinder for vertical lifting.

flipping Mechanism: Hydraulic cylinder or servo motor drives the rotating shaft to tilt the trolley.

Grip/Locking Mechanism: Securely grips the trolley during lifting and flipping (e.g., hydraulic clamps, automatic hooks, tapered positioning pins).

Traveling Track/Guiding Mechanism (Optional): If the trolley needs to be transported from different locations, the main unit may need to move the track laterally.

Trolley Positioning and Conveying Mechanism: May be a roller conveyor, chain conveyor, or simple positioning stops to ensure the trolley stops precisely at the lifting position each time.

Electrical Control System (PLC): Controls the entire cycle and interlocks with the pressing machine.

Safety Protection: Fences, light curtains, fall arrestors, etc.

2. Typical Workflow:

【Preparation】Manual or AGV pushes the cart filled with metal shavings to the fixed loading station and locks it in place.

【Grasp】The grabbing mechanism of the elevator operates, firmly gripping the cart.

【Lift】The cart is lifted vertically to a height exceeding the hopper height of the briquetting machine.

【flipping】The flipping mechanism operates, flipping the cart to a certain angle (usually >60°), allowing the material to slide entirely into the hopper under gravity.

【Reset and Shaking】The cart is tilted back to its original position, possibly accompanied by a brief shaking to ensure clean unloading.

【Lowering and Returning】The empty cart is lowered and accurately returned to the conveyor line or its original location.

【Release】The grabbing mechanism releases, the empty cart is removed, and a full cart enters, awaiting the next cycle.

III. Key Design Considerations

1. Cart Design and Connection

Standardized Interface: The cart must have lifting lugs, slots, or grabbing points that match the grabbing mechanism.

Unloading Gate Design: It should open automatically or by gravity when tilted and close automatically after resetting. 1. Door Seal: Ensure good sealing to prevent material leakage during transportation.

Lightweight and Robust: Reduce weight while maintaining strength to improve effective load capacity and energy efficiency.

2. Gripping and Locking Mechanism:

Safety First: Multiple anti-drop designs are required (mechanical self-locking + sensor detection). A "securely gripped" signal must be confirmed before lifting.

Automatic Centering: The mechanism should compensate for minor deviations in trolley positioning, achieving automatic guidance and gripping.

3. Flipping Motion Control:

Smooth Start and Stop: Deceleration is required at the start of flipping and before reaching the final position to prevent material impact and mechanism overload.

Adjustable flipping Angle: The flipping angle can be set via a program to adapt to the angle of repose of different materials, ensuring complete emptying.

Position Holding: Briefly hold the flipping position to allow material to drain completely.

4. Coordination with the briquette Press:

Interlock Signal: The device must receive a "ready to feed" signal from the cake press before starting operation. After flipping is complete, a "feeding complete" signal is sent to the cake press.

Space Avoidance: The entire device's operating trajectory must be absolutely free from interference with the moving parts of the briquetting machine (such as molds and pressing heads).

IV. Solution Variations and Selection

C-arm Fixed Type: The most compact structure and lowest cost, suitable for fixed workstations where the trolley is parked next to the briquetting machine. (Most common)

Gantry Rail Mobile Type: The main unit can move along the rail, serving multiple trolley parking positions on a long conveyor line, or feeding two parallel briquetting machines. (Higher flexibility)

Swing Arm Type: Lifting and transfer are achieved through a large-radius swing arm, suitable for scenarios with limited space but requiring a certain transfer distance.

V. Summary and Recommendations

The lifting and flipping trolley feeding device is a classic, mature, and efficient engineering solution. It transforms the complex problem of "bulk material handling" into a relatively simple problem of "unitized container handling," greatly improving the system's reliability and automation level.

Before implementation, please be sure to clarify:

1. Trolley specifications: dimensions (length, width, height), full load weight, gripping point location, and unloading gate type.

2. Hopper Interface of the Press Machine: Hopper inlet dimensions, height, and relative position to the ground.

3. Production Cycle Time: How much material is needed to press one patty? How long does it take to complete one cycle of lifting and turning the trolley?

4. Logistics Integration: How are empty/full trolleys transported into and out of this workstation? (Manual forklift, roller conveyor, AGV?) This system is a perfect automated bridge connecting the "material preparation area" and the "pressing and forming area," making it ideal for widespread application in large-scale, continuous metal scrap recycling production lines.