Automatic Inline Checkweigher 3-Section Weighing Conveyor with Pusher Rejection AC110V

The checkweigher is capable of handling products weighing up to 50 kilograms with a detection accuracy of plus or minus 0.3 to 1 gram, depending on product characteristics and line speed. The conveyor belt operates at adjustable speeds from 20 to 50 meters per minute, supporting throughput rates of 20 to 80 pieces per minute. The system uses a high-speed digital weighing controller combined with precision photoelectric sensors to detect product presence and trigger weight measurement at the optimal position on the conveyor.

When a product's weight falls outside the acceptable range, the control system activates the stainless steel pusher mechanism on the roller rejection section, diverting the non-conforming product to a separate collection area while conforming products continue along the non-powered roller section to the next process stage. The machine features a large color touch screen display for easy parameter setup, weight limit programming, and statistical data review. Constructed with a food-grade stainless steel frame and green polyvinyl chloride conveyor belt, the machine meets hygiene standards for food, pharmaceutical, and cosmetic production environments. The system operates on 110-volt alternating current power and comes with a step-up transformer for regions with 110-volt electrical infrastructure.

Pneumatic Pusher Rejection Mechanism

The rejection section features a precision-engineered stainless steel pusher plate activated by a pneumatic cylinder, providing fast and reliable diversion of non-conforming products. When the weighing controller detects an underweight or overweight product, it sends a signal to the pneumatic solenoid valve, which extends the cylinder rod and pushes the rejected product sideways off the roller conveyor into a designated collection bin. The pusher action is completed in less than 0.3 seconds, ensuring accurate timing even at high line speeds of up to 80 pieces per minute. The stainless steel construction resists corrosion and wear in demanding production environments.

Motorized Stainless Steel Roller Rejection Section
The middle rejection section utilizes a series of polished stainless steel rollers driven by an independent 370-watt motor, providing smooth and consistent product transport between the weighing and collection sections. The rollers are precision-machined with sealed bearings for maintenance-free operation in dusty or humid factory conditions. The roller design minimizes product resistance during the pusher action, allowing non-conforming items to be easily pushed sideways without jamming. The open roller spacing allows debris and product residue to fall through, keeping the conveyor clean during continuous operation.

Non-Powered Gravity Roller Collection Section
The final collection section features non-powered stainless steel rollers arranged on a slight downward incline, allowing accepted products to glide smoothly by gravity from the rejection section to the end of the line. This gravity-assisted design eliminates the need for a third motor, reducing power consumption and simplifying maintenance. The rollers rotate freely on precision bearings with minimal resistance, ensuring gentle product handling that prevents damage to delicate packaging. The 700 by 700 millimeter collection area provides ample space for operators to access and retrieve accepted products or connect the section to downstream equipment.

Adjustable Leveling Feet & Swivel Casters — Easy to Move, Rock-Solid in Place
Each support leg is equipped with both a heavy-duty swivel caster and an adjustable stainless steel leveling foot, giving you the best of mobility and stability. Roll the machine effortlessly to wherever your production line needs it, then simply lower the threaded feet to anchor it firmly in position — no shaking or drifting during operation. The wide foot pads with non-slip rubber bases grip the floor securely and allow precise height and level adjustment, compensating for uneven workshop floors to keep the conveyor running flat and stable for accurate weighing and inspection results.

Food-Grade Green PVC Conveyor Belt
The weighing section is equipped with a durable green polyvinyl chloride conveyor belt that meets food-grade standards for direct or indirect contact with packaged food products. The belt surface provides excellent product grip at various speeds while allowing easy cleaning between production runs. The belt is reinforced with a strong fabric core for dimensional stability and long service life under continuous load. The 600-millimeter belt width accommodates products of various sizes, and the smooth surface texture prevents product slippage during the weighing process, ensuring accurate measurements at all operating speeds.

Precision Photoelectric Detection System
The machine is equipped with high-precision photoelectric sensors positioned along the conveyor path to accurately detect product arrival and trigger the weight measurement at the optimal moment. The through-beam sensors create an invisible light curtain across the conveyor that reliably detects products of various colors, shapes, and surface finishes. The sensors are connected to the weighing controller via shielded cables to prevent electrical interference, ensuring consistent and repeatable triggering timing. This precise detection system is critical for achieving the stated accuracy of plus or minus 0.3 to 1 gram at line speeds up to 50 meters per minute.

[Pneumatic Pusher Rejection]: Stainless steel pusher plate with pneumatic cylinder activation provides fast, reliable diversion of non-conforming products in under 0.3 seconds.
[Stainless Steel Roller Section]: Motorized polished rollers with sealed bearings provide smooth transport and easy debris shedding in demanding conditions.
[Gravity Roller Collection]: Non-powered gravity rollers reduce power consumption and provide gentle product handling on a 700 x 700 mm collection surface.
[Touch Screen Display]: Large color screen with intuitive interface for weight limits, recipe storage, statistics, and diagnostics.
[Green PVC Belt]: Food-grade belt with excellent grip, fabric reinforcement, and 600 mm width for various product sizes.
[Photoelectric Sensors]: High-precision through-beam sensors with shielded cables ensure accurate product detection and weighing trigger timing.

1. Assembly and Placement:
Assemble the three sections (weighing, rejection, and collection) in sequence on a flat, level floor. Connect the sections using the provided joining hardware. Adjust the support feet and casters to ensure all sections are level and aligned. Connect the included transformer to the power input if operating on a 110-volt supply. Connect the air compressor to the pneumatic pusher inlet. Set the air pressure to 0.4 to 0.6 megapascals.

2. Power On and Calibration:
Turn on the main power switch. The touch screen will initialize. Allow the machine to warm up for 10 minutes before calibration. Place a certified test weight on the weighing section and follow the on-screen calibration procedure. The system will automatically calibrate the load cell to ensure accurate measurements.

3. Program Weight Limits:
From the touch screen main menu, select "Product Setup." Enter the target weight, upper tolerance limit, and lower tolerance limit for the product to be checked. Save the settings as a named product recipe for future recall. The machine can store multiple product recipes for quick changeover between different products.

4. Set Conveyor Speed:
Adjust the conveyor belt speed to match your production line requirements. The speed can be set between 20 and 50 meters per minute using the touch screen controls. Lower speeds provide higher accuracy, while higher speeds increase throughput. Test several products at the selected speed to verify accuracy before full production.

5. Start Production:
Press the start button on the touch screen or the green start button on the control panel. Products will begin feeding onto the weighing conveyor. The system automatically weighs each product, compares the weight to the programmed limits, and either allows accepted products to continue to the collection section or activates the pusher to reject non-conforming products. Monitor the pass and reject counts on the display.

6. Data Review and Export:
During or after production, review the statistical data on the touch screen including total count, pass count, reject count, average weight, and standard deviation. Export the data via the universal serial bus port if record keeping is required. Clean the conveyor belt and rollers at the end of each shift to maintain hygiene and measurement accuracy.

WARNING: This equipment contains moving conveyor belts, rollers, and a pneumatic pusher mechanism. Improper operation can cause serious injury. Read all instructions before use.

1. Moving Parts Hazard: NEVER place hands, arms, or any body part on or near the conveyor belt, rollers, or pusher mechanism while the machine is operating. The conveyor moves at high speed and the pneumatic pusher extends with significant force. Always ensure the emergency stop button is accessible and functional before starting operation.
2. Pneumatic Safety: Ensure the air supply pressure does not exceed 0.6 megapascals. Excessive pressure can cause the pusher to operate with dangerous force. Always disconnect the air supply before performing maintenance on the pusher mechanism.
3. Electrical Safety: Connect only to a properly grounded AC 110-volt outlet using the included transformer if required. Do not operate with wet hands or in damp conditions. Disconnect power before cleaning or performing any maintenance. Only qualified electricians should service the electrical system.
4. Conveyor Entanglement: Keep loose clothing, jewelry, hair, and accessories away from the conveyor belt and roller sections. These items can become entangled in the moving parts, causing severe injury. Secure long hair and roll up sleeves before operating the machine.
5. Stability: The machine must be installed on a flat, level, and stable floor surface. All four support feet and casters must be properly engaged. Do not operate the machine if it is unstable or wobbling. Lock the casters after positioning to prevent movement during operation.
6. Weight Limit: Do not place products exceeding 50 kilograms on the conveyor. Overloading can damage the load cell and affect measurement accuracy. Do not drop heavy products onto the weighing section, as impact can damage the precision load cell.
7. Cleaning Safety: Disconnect power and lock out the electrical supply before cleaning the machine interior. Use appropriate cleaning agents that are compatible with polyvinyl chloride belts and stainless steel surfaces. Do not use high-pressure water spray directly on the electrical control panel or sensors.
8. Emergency Stop: Press the red emergency stop button immediately in case of any dangerous situation. The emergency stop cuts power to all motors and pneumatic systems. Reset the button by rotating it clockwise and restart the machine after resolving the issue.
9. Qualified Operators: This equipment should be operated only by trained adults who have read and understood this manual. Keep children and unauthorized persons away from the machine at all times. Post warning signs near the machine indicating moving parts and pinch points.
10. Maintenance: Inspect the conveyor belt, rollers, and pusher mechanism daily for wear or damage. Check the photoelectric sensors for cleanliness and alignment. Replace worn belts and damaged rollers promptly to prevent unexpected failures during production.

Weighing Conveyor Section *1

Non-Powered Collection Section *1

User Manual *1

You can make order with no worry.
Any concern just feel free to let us know, we'll reply in 24 hours in normal condition.
Handling Time: Shipping is usually made in 1-3 business days after payments cleared. Orders are processed from Monday-Friday; Not on the weekends & public holidays.
Warranty: 6 months' warranty for the machines, not for the consumables.
We stand behind our products all the item, so even if your warranty period has expired, you can still seek for service or technical support from us with low cost.