In many aspects of industrial production, material handling is a crucial part. As a key equipment in the field of material handling, the vibrating feeder, with its excellent performance and wide range of applications, is becoming a reliable assistant for major industrial enterprises to improve production efficiency and reduce costs.

A vibrating feeder is a device used in the production process to evenly, continuously, or quantitatively feed lumpy, granular, and powdery materials from storage bins or other storage equipment into receiving equipment. The vibrating feeder is suitable for conveying fasteners such as bolts and nuts in the hardware industry. In order to improve the conveying capacity and maximum working weight of the vibrating feeder, the VRV team (Professional vibrating feeder manufacturer from China) designed a vibrating feeder driven by two vibrators for customers. This feeder has the following advantages:

(1) High-efficiency and stable feeding performance

Designed based on advanced vibration principles, while the VRV team improves the handling vibrating feeder capacity, the vibrating feeder control system can accurately control the feeding speed and flow rate of materials according to production requirements. Whether in a high-speed production line or in a scenario with extremely high requirements for feeding accuracy, it can maintain a stable feeding state, avoiding problems such as material blockage or uneven feeding, and ensuring the smooth progress of the production process.

(2) Strong adaptability

The flexible design of the vibrating feeder can adapt to a variety of material characteristics, including materials with different particle sizes, humidity levels, densities, and flowabilities. From bolts, nuts, screws, rivets, washers to gears, oil drum lids, etc., bulk materials in the hardware industry are characterized by heavy weight, hard surfaces, and easy wear. The vibrating feeder can be made of anti-corrosion materials with special wear-resistant coatings according to the characteristics of the materials, which not only extends the service life of the equipment but also protects the properties of the materials.

(3) Low energy consumption and low maintenance cost

Compared with traditional feeding equipment, the vibrating feeder has lower energy consumption. The advanced design of its vibration system reduces energy loss, ensuring efficient feeding while reducing production costs. In addition, the equipment has a simple structure with fewer components and uses high-quality wear-resistant materials, reducing the amount of maintenance work and maintenance costs. Routine maintenance only requires regular inspection of the operating status of the vibrating motor and the fastening condition of the equipment, greatly reducing the labor intensity of workers.

The vibrating feeder system can choose two driving methods, electromagnetic vibrators and unbalanced motors, according to different application scenarios. Compared with the large handling capacity of motor vibrating feeders, electromagnetic vibrating feeders have higher precision in handling materials. We can remotely and precisely control the feeding speed through the controller and PLC.

VRV team  provide comprehensive after-sales service guarantees for electromagnetic vibrating feeders for the hardware industry:

1. The warranty period for all delivered goods is one year (excluding consumable parts such as wear-resistant lining plates and rubber seals), starting from the date when the equipment passes the commissioning and acceptance inspection.

2. Accept all the provisions of the tender document and deliver the goods in a timely manner with guaranteed quality and quantity as required by the contract.

3. Ensure that the products leaving the factory meet relevant international, national and industry standards and comply with the technical conditions specified in the contract to guarantee the reliability of product operation.

4. In case of any product quality problems found during the warranty period, our company will strictly fulfill the replacement or compensation responsibilities stipulated in the contract.

5. For any malfunctions of the equipment after the warranty period, if our company's cooperation is needed, we will actively and fully cooperate.

Vibratory feeders have been used in the manufacturing industry for several decades to efficiently move fine and coarse materials which tend to pack, cake, smear, break apart, or fluidize. Because they can control material flow, vibratory feeders handle bulk materials across all industries, including pharmaceuticals, automotive, electronic, food, and packaging. These feeders also advance materials like glass, foundry steel, and plastics at construction and manufacturing facilities.

Feeders can range from small base-mounted, pneumatic-powered models moving small quantities of dry bulk material to much larger electro-mechanical feeders that convey tons of material an hour. Users turn to vibratory feeders when they want to move delicate or sticky materials without damaging or liquefying them.

Vibratory feeders handle a wide assortment of materials including but not limited to: almonds, crushed limestone, shelled corn, powdered metal, metal billets, various pipe fittings, scrap brass and bronze, crushed and shredded automobiles, hot dross, and much more. Because they emit precise vibrations, vibratory feeders are also used to process small parts, like coins, washers, or O-rings, as they move along a belt conveyor.

Other common applications of vibratory feeding include:

* Controlled flow of ingredients to mixing tanks
* Sprinkling toppings or coatings on food and dairy products
* Adding binders and carbons to foundry sand reprocessing systems
* Chemical additive feeding in the pulp and paper bleaching or chip handling processes
* Feeding metal parts to heat treating furnaces
* Feeding scrap or glass cullet to furnaces


Manufacturers have upgraded and modified vibratory feeders and conveyors over the years to enhance their role in multiple processing applications. The latest equipment offers increased energy savings, more precise control over material flow, easier maintenance, and a broader variety of options. Leading suppliers also now provide better technical support, and, in some cases, faster delivery of product to your plant.

Virtually all vibratory equipment—regardless of type or size—is built with materials that can withstand the harsh environment of the manufacturing industry. Vibratory feeder trays can be made from stainless steel which is far less susceptible to corrosive materials. The internal motor’s fully enclosed construction offers protection from environmental elements to ensure maximum uptime.

Vibratory feeders save users time and money on maintenance as well, because they have no moving parts, aside from the vibrating drive unit. This means they break down less frequently and vibratory feeder parts are easy to replace. Other advantages of vibratory feeders include: ergonomic design, adaptability and versatility, effectiveness and accuracy.

How to Select the Proper Vibrating Feeder Design
There are two basic designs available when selecting a vibrating feeder: electromagnetic and electromechanical. A third option—air-powered vibrating feeders—are basically an alternate to electromechanical feeders since they have the same simple brute force design concept—the vibratory drive is directly attached to the tray.

Here are the basic advantages and disadvantages to these three feeders:

Electromagnetic feeders provide variable intensity with typically fixed frequency of 3600 vibrations per minute (VPM). They only require single phase power, offer quick stopping, and are ideal for cold weather. However, they are sensitive to line voltage fluctuations and temperature swings are not suitable for hazardous areas. They also need constant tuning if there are rate or load changes.


These units work well with dry, free-flowing, pelletized or granulated material. They can control material flow from a few pounds to several tons per hours and can be custom designed to accommodate material flow from a few feet (with a single drive) to up to 20 feet (with multiple drives).

Electromechanical feeders are powered by twin rotary electric vibrators which provide a broader range of stroke/frequency combinations. Their flexibility is further enhanced with a variable frequency drive (VFD), which provides quick and easy adjustment without having to manually adjust the eccentric weights.

A VFD with dynamic braking or a starter with a dynamic brake will end the vibration faster to limit the erratic motion a shut down. This design provides the quietest operation and is less susceptible to head loads. These feeders work well in hazardous conditions when explosion proof vibrators are installed.

Air-powered feeders work best under hazardous conditions because they are driven by an air-cushioned piston vibrator, which produces smoother linear force and can work safely in high temperatures. It’s the simplest of the three feeders to maintain and the controls are the most economical.

While an air-powered feeder doesn’t require tuning, there are limitations to the physical size of the tray and feed rates. These units are also less suitable for outdoor operation because the air lines can freeze up. These feeders are also susceptible to head load.

Tray Designs Are Limitless
The shape, length, and width of modern feeder trays are almost limitless. Customers can order custom feeder trays to suit their unique process applications. Every configuration of flat, curved, vee, and tubular designs are available.

Units can be furnished with special coatings, such as neoprene, UHMW, urethane, non-stick polymer, non-stick textured surfaces, or removable abrasive-resistant steel plate. Liners made from either neoprene, UHMW, or urethane protect the feed tray while processing harsh materials. The trough can be furnished in steel or polished stainless steel to meet the most demanding requirements.


Trays can be designed for fast removal and cleanout to avoid cross contamination of materials and decreased production line downtime. Custom trays can have quick release clamps to enable removal of the tray and cover without tools. The tray is simply lifted and disconnected from the frame for easier cleaning.

Spring Systems from Steel to Fiberglass
Springs are an integral part of the feeding system process because they convert the vibration from the drive to the tray, thus causing the material to move. Like trays, springs today come in a variety of materials, sizes, and configurations depending upon the application.

Fiberglass springs are the most popular configuration for light- and medium-duty applications. Small electromagnetic feeders, light- to medium-duty conveyors, and most high-precision vibratory equipment use fiberglass or multiple pieces of fiberglass as their primary spring action material.

Steel coil springs are commonly used on heavy-duty and high-temperature applications. These coils are effective in ambient temperatures up to 300°F.

Dense rubber springs are typically used on heavy-duty feeders and conveyors to provide stability and motion control between the drive and tray. However, rubber springs are limited to use in environments below 120°F.

Air mount springs are designed to handle tough industries such as construction and mining, which present dirty, dusty, and wet environments. They withstand common issues such as rust and corrosion that typically lead to broken parts. They also reduce structural noise and are versatile.

Factors to Determine a Vibratory Feeder
Typically, a feeder application will require the movement of some given material with a known bulk density over a desired distance. Parameters that influence the sizing and design of a vibratory feeder include:

* The inlet and discharge conditions for that piece of equipment
* How the material is being placed on the feeding surface
* The dimensions of the incoming material stream
* Batch dumping vs. continuous flow
* Feeding another piece of equipment, such as a belt conveyor, bucket elevator or furnace
* Feed rate
* Material properties, including bulk density and particle or part size.

The distance the material must travel drives the length of the unit and may include some additional length to properly interface with the receiving equipment. The volume of material moved per hour plus the material’s bulk density helps determine the width and depth of the vibratory tray. The size of equipment that passes material onto the vibratory feeder also factors into the feeder’s width.

Proper Location of Vibrators on Feeders
There are several options when deciding where to install the vibrators on a particular feeder model. With vibratory feeders, there is a concern about the product discharge height, as the equipment is often feeding material downstream to other devices.

Typically, on vibratory feeders the default location is “below deck” where the vibrators are attached on the underside of the unit. With below deck vibrators, the feeder will need a higher discharge height compared to a similarly-sized unit where the vibrators are “side mounted” or even in some applications where the vibrators are attached “above the deck.”

Functionally, there is no benefit to locating the vibrators above, on the side or below the unit. Provided the structure is appropriately designed for the force output of the vibrators and they “sense” each other, either vibrator location can provide satisfactory results.

Controlling Material Flow from a Feeder
Precise metering of material flow (whether moist or dry) onto trays or other receptacles is critical to the operation of any vibratory feeder, particularly those equipped with a hopper. Several factors below influence the material flow, but when all three are combined, it is possible to vary the flow rate and provide very repeatable results as the material cascades off the feeder end.

Bed depth of material on the tray. The material must be free flowing and always available in the hopper to charge the feeder. Not enough material will “starve” the feeder, reduce the bed depth and cause inconsistent discharge rates.

A hopper slide gate helps adjust material depth. Opening the gate allows for a higher volume of material to be removed from the hopper, resulting in a deeper material flow and higher volume off the feeder end. Likewise, reducing the opening restricts the volume of flow out of the hopper, resulting in more shallow material flow as well as lower volume.

Frequency of vibration applied to the feeder tray. Different materials respond better to different frequencies of vibration which influences the type of vibrator installed on the feeder.

For example, rotary electric vibrators are designed with various frequencies to accommodate different materials:

* Two-pole vibrators that operate at 3600 vibrations per minute (VPM) have the highest frequency and smallest amplitude
* Four-pole vibrators that operate at 1800 VPM
* Six-pole vibrators that operate at 1200 VPM
* Eight-pole vibrators that operate at 900 VPM

Heavier materials tend to require higher frequency drives while lighter materials feed more effectively with lower frequency drives.

Vibrators are installed based on the selected feed rate. This selection is based on the frequency of vibration and the maximum force output of the vibrator.

Necessary adjustments to the eccentric weights of the vibrators can be made to reduce the force output from the unit’s rated maximum. For a given frequency, more force output will result in a larger amplitude or stroke of the finished equipment.

Technical Support is Key
Purchasing and installing a vibratory feeder poses fewer risks today because of increased technical assistance before and after the sale.  Material samples of various densities and configurations can be tested beforehand to determine the optimum piece of vibratory and conveying equipment. This pre-testing virtually eliminates the potential problem of installing an under or oversized piece of equipment for the job at hand.

Proper screen tension is crucial for effective screening and longer screen life. Proper screen
tension helps spread material across the full width of the screen. Uniform tension must be
also maintained on the screen surface to prevent whipping and to maintain contact between
the screen surface and the capping rubber (also called channel rubber, bucker-up rubber,
etc.) on the longitudinal support (camber) bars for preventing damage to (breakage of)

screen cloth.

As shown in above figure, for proper screen tensioning; tension plates (also called tension
bars, tension rails, clamp down rails, side hold down, etc.) and tension bolts with swivel nuts
(or swivel/spherical/taper washer and hex nut) are commonly used for heavy wire cloth or
perforated plate (screen cloth) with edge hooks (hook strips) on side tensioned vibrating
screens. Tension plates, tension bolts, etc. are called screen accessories.
During operation, as the screen may become loose due to stretching (as the screen cloth
wire wears thin) and loosening of the hooks, it is important to periodically check the screen,

and retighten the hooks.

Above figure shows the most common type of tensioning device for fine and medium weight
cloth consisting of tension wedge and rubber spring. This tensioning device has the
advantage of quick tightening or easy release, while at the same time providing constant
tension through the action of the molded rubber spring. Because the wedges are held firmly

in place by spring action, constant attention (retightening) is not required.

Above figure shows other automatic tensioning device for fine and medium weight wire cloth
or light weight perforated plate consisting of steel spring assembly. As the screen cloth gets
stretched, the springs automatically keep the cloth in constant tension.

The main obstacles to efficient screening are plugging/pegging, blinding and carryover. Each can be minimized with a variety of solutions.

As shown in above figure, the ball trays consist of compartments with perforated plate or wire cloth with relatively large openings placed beneath the screen cloth. Generally, rubber balls are placed in each compartment that freely bounce during the operation of the screen. They strike the underside of the screen surface and therefore randomly knock out the clogged material. The secondary vibration generated in the screen cloth due to striking of the balls also prevents fine particles from sticking and building up on the wires. In most cases, a ball tray will be effective with material containing as much as 5% moisture. The material that passes through the screen cloth passes through the perforated plate or wire cloth at the bottom of the ball tray where it can be collected.
Ball trays are generally used for coarse meshes which can withstand higher impact energy from the balls. Balls are not recommended for fine screen meshes because they may damage the screen cloth.

As a rule of thumb, screening at less than around 5 mm aperture size must be performed on perfectly dry or wet material, unless special measures are taken to prevent blinding. Blinding occurs when moisture causes fine particles to stick to the surface and gradually cover the openings. In this case, changing stroke and increasing speed may help. Use of different surface media also may be considered. The other options are to consider ball trays and heated decks. Heated decks have an electric current in the wire that heats and dries the material so that it easily knocks itself loose as the screen vibrates. Heated deck is a more effective method of preventing blinding in damp materials (1.5 to 6% moisture) than the ball tray.
Heating transformers, consuming from 2 to 3 KVA per foot of screen length, can be used with any screen cloth weighing less than about 1.5 lbs. per square foot. The current flows at a low voltage (1 to 12) and a high amperage to produce temperatures on the screen wires ranging from 80 to 150°F. This heat is not intended to dry the material being screened, but only to dry the interface between the wire and adhering particles (e.g. clay particles) sufficiently to break the adhesive bond holding the particles to the wire. The screen vibration does the rest.
Wet screening allows finer sizes to be processed efficiently down to 250 μm and finer.
Adherent fines are washed off large particles, and the screen is cleaned by the flow of pulp and additional water sprays. Carryover occurs when excessive undersize particles fail to pass through the openings. Solutions may involve changing stroke, speed or reversing screen rotation; changing wire diameter or the shape of the opening to increase open area; changing the angle of inclination and changing feed tonnage.

Installation
The supporting steel structures on which the screen and drive motor are mounted must be sufficiently strong and braced to accept without deflection the dynamic loads caused by the
vibration of the screen.
Adequate clearances must be allowed between the screen and the fixed structure, chutes etc., to allow enough space because the movement of the screen is large in the so-called resonance areas when starting and stopping the screen.
Check that the height difference of separate springs pedestals (in the same end of the screen) are not more than ± 3 mm. Transparent water hose and water may be used to check the height difference. Pedestals surface must be horizontal.
Tighten all bolts in the recommended sequence if any and to the recommended torque.

• 
  Check the screen’s installation angle.
  


• 
  Check that all of the spring axes are vertical.
  


• 
  Check rotation directions of the motor/s.
  

Start up
After start (first 1-2 minutes) make sure that screen is starting and running properly.
Check the feed of the material. It must spread to whole width of the screen.
Check screening result.

Above figure shows three potential screening scenarios. Screening finishes early on the
deck at (A), which results in a loss of production; screening not completed (B), which results
in carryover and contaminated material; and optimal screening (C), which provides for higher
production with less contamination.
Check stroke length and stroke angles in each corner. Stroke length must be within one mm to each other in the same end of the screen!
Check for oil/grease leaks in the mechanism.
After 4 to 6 hours, check that bearing temperature is even in each bearing. Normal running temperature can be about 70°C when ambient temp is 20°C.
After running the screen for about 50 hours, check the following:

• Fastening / tightness of mechanism bolts.
• Fastening / tightness of counterweight.
• Fastening of screening medias.
• Alignment / tightness of V-belts.

Screen Adjustments
If the screening performance is not satisfactory, check first that the screen meshes are correct for the application and that the feed and discharge arrangements are satisfactory. Feed to the screen must be arranged so that the material is fed uniformly across the entire width of the screen.
As feed material is a mixture of varying sizes, oversize material will restrict the passage of undersize material, which results in a build-up, or bed depth, of material on the screen surface. Bed depth diminishes as the undersize material passes through the screen openings. For efficient screening, the material bed should not reach a depth that prevents undersize from stratifying before it is discharged. Hence for maximum screening efficiency depth of bed should be proper. As stated earlier, depth of bed (in dry screening) should not
exceed four times the opening size at the discharge end of the screen. Depth of bed can be
changed by adjustments in speed, stroke length, rotation (or throw) direction and angle of
inclination. However, always make only the minimum adjustments necessary to achieve the
desired result.
If adjustments are necessary, they should be made in the order given below.

• Stroke frequency adjustment

• Stroke length adjustment

• Adjusting the inclination of the screen body

Size control is the process of separating bulk material into two or more products on basis of
their size. In mineral processing practices, two methods dominating size control processes
are: screening and classification. As shown in the following figure, while screening uses a
geometrical pattern for size control, classification uses behavior of particle’s (finer than 1
mm) motion in air or liquids (water) for size control.

Sizing is extensively used for size separations from 300 mm down to around 40 μm (micron),
although the efficiency decreases rapidly with fineness. Dry screening is generally limited to
material above about 5 mm in size, while wet screening down to around 250 μm is common.
Although there are screen types that are capable of efficient size separations down to 40
μm, sizing below 250 μm is also undertaken by classification. Selection between screening
and classification is influenced by the fact that finer separations demand large areas of
screening surface and therefore can be expensive compared with classification for high
throughput applications.

  In today's increasingly competitive global manufacturing landscape, the efficiency and stability of the packaging process directly impact an enterprise's market competitiveness. Many businesses have encountered troubles such as downtime maintenance due to difficult equipment cleaning, production delays from complex operations, and frequent replacements caused by poor compatibility. Here, we introduce UUPAC's 520 Vertical Filling Forming Sealing Packing Machine, which delivers intelligent packaging solutions through its smart design and high-efficiency performance.

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20° inclined touchscreen for effortless operation: The 10.1-inch HD touchscreen with 20° inclination and anti-glare coating adapts to standing operation, minimizing light interference. Its simplified 3-level menu logic allows new users to master operations within 10 minutes.

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Optimized film drive for stable output: Designed for 520mm film width with 400mm pull stroke, it supports 250×400mm bags with neat sealing. Servo-driven film pulling (±0.1mm accuracy) ensures stable 10-60 BMP speed, 20% faster than traditional models.

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    In modern production lines, accurate weighing, efficient packing, and precise detecting are essential components. Any inaccuracies or inefficiencies in these areas can lead to increased costs, product quality issues, and loss of customer satisfaction. Hence, UUPAC is proud to present our Typical Weighing, Packing and Detecting System, a revolutionary solution designed to optimize production processes.

7 Key Components of Our Weighing, Packing and Detecting System

1. Bucket Elevator: It can smoothly lift materials to an appropriate height, ensuring a continuous supply of materials .

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Why Choose UUPAC's Weighing, Packing and Detecting System?

1. Intelligent Automated Control

The system coordinates product feeding via fully automated mechanisms, cutting labor costs by 40% and energy consumption by 25% compared to traditional setups.

2. Precision-Engineered Work Platform

Reasonable design and soild structure of working platform to ensure the weighing accuracy is not affected.

3. Versatile & Stable Operation

Simple and scientific design of the complete line with stable running and large weighing range and high weighing accuracy features.

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Suitable for snack foods, puffed goods, hardware, plastics, and rubber, the system features hygienic stainless steel for food sectors and anti-static modules for industrial use.

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By minimizing measurement errors, reducing packaging waste, and decreasing the need for manual inspection, our system helps customers save significant costs. Over time, these savings can have a substantial impact on the bottom line.

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With faster packing speeds and automated quality control, the production line can operate at higher efficiencies.

Conclusion

    The Typical Weighing, Packing and Detecting System is more than just a piece of equipment—it's a strategic investment for companies looking to enhance production efficiency, reduce costs, and ensure consistent product quality. We invite potential customers to contact us for more information, schedule a product demonstration, or discuss how our system can be tailored to your specific production needs. With our solution, you can elevate your production line to new levels of performance and competitiveness.

In food, pharmaceutical, and chemical industries, metal contaminants pose a silent but critical threat. From tiny stainless steel shavings in processing equipment to accidental metal impurities in packaging, even a single undetected particle can lead to product recalls, brand damage, and regulatory penalties. UUPAC's High Precision Horizontal Conveyor Metal Detector will become an indispensable safeguard against these risks in your production line.

Our high precision horizontal conveyor metal detectors are ideal for packaged, loose, or fragile products that require gentle handling. The product has the following features:

1. Balanced Coil Principle: Utilizes a balanced electromagnetic field design for enhanced stability and detection reliability.

2. Advanced Phase Compensation Technology: Dynamically adapts to product characteristics to effectively eliminate product effect and minimize false rejects.

3. Dual-Core Processing Architecture: Employs a combination of Digital Signal Processing (DSP) and a dedicated Microprocessor for real-time signal analysis, significantly improving detection sensitivity and efficiency.

4. Intelligent Signal Processing & Calibration: Features automatic transmission error compensation and simplified one-touch parameter calibration for quick setup and minimal operational errors.

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8. Automatic flap rejection system can improve production efficiency and save labor costs.

A high-precision horizontal conveyor metal detector is an essential investment for food manufacturers prioritizing safety and quality. By integrating advanced detection technology with hygienic design and reliable rejection systems, it minimizes contamination risks while maintaining production efficiency. For optimal performance, choose a model tailored to your product type and production speed, and follow strict testing and maintenance protocols. Your consumers' safety—and your brand's reputation—depend on it.

Need a metal detector for your production line? Contact us for more information!

Thin Stone Veneer Saw is a highly efficient machine designed for the precise cutting of thin natural stone slabs for wall decoration, interior and exterior projects. It is lightweight and equipped with diamond blades to easily cut thin stone veneer flats and corners, ensuring flat edges and reducing material waste. Easy to operate, safe and durable, this machine is ideal for the stone processing and construction industries.