月: 2023年3月

What Is a Branch Cable?

A branch cable is a specialized cable used to distribute various types of wires. For power supplies, branch cables come with sockets or outlets. For lighting, they feature sockets corresponding to the number of branches. There are also specific branch cables for monitors, displays, computers, solar cells, headphones, and microphones.

With various plug shapes and configurations available, it’s important to select a branch cable that matches your specific needs. Options include varying lengths between cables and the number of branches.

Uses of Branch Cables

Branch cables are primarily used for branching electrical cables in different applications. Waterproof versions are suitable for outdoor use, such as connecting power to road construction indicator lights. In lighting, they can be connected to multiple fixtures, with a choice of length and cable shape depending on the number of fixtures. These cables are also helpful for synchronizing multiple electronic devices, such as PCs and monitors.

Principle of Branch Cables

Branch cables typically consist of a single wire that divides into multiple branches. These wires can be three-phase or two-phase, with color-coded wires for easy identification. Each branch is secured with a sleeve and the entire cable is insulated for protection.

For solar panels, branch cables enable parallel connections, but it’s crucial to adhere to the rated voltage and current specifications. For electronic devices, such as computers, there are various branching connectors for monitors, fans, and earphones to control multiple devices simultaneously.

Earphone or headset branch cables, for example, can connect two 4-pole terminals of smartphones or tablets to a PC’s stereo terminals, useful for audio recording. Connectors are available in configurations like one female to two male branches, one male to two female branches, and all-male or all-female designs.

What Is a Power Roller Conveyor?

A power roller conveyor is a system where multiple thick rollers are aligned to transport loads by rolling them. It is typically used in factories and logistics for line transportation of heavy-load products. The ideal products for transport are those with a flat bottom and evenly distributed weight.

To operate autonomously, a power roller conveyor often requires a specific gradient, designed according to the material and weight of the items to be conveyed.

Applications of Power Roller Conveyors

Power roller conveyors are widely used in industrial and logistical settings for moving various materials. They are particularly effective for transporting heavy items like plastic cases or crates on factory production lines.

While free roller conveyors rely on gravity and an inclined line, motorized roller conveyors with built-in motors to rotate the rollers are also common, especially when inclination is not feasible.

Principle of Power Roller Conveyors

Power roller conveyors handle heavy loads along a line, with the ability to operate on gravity in inclined setups. Motorized versions feature small motors within the rollers for more efficient transport. These conveyors are best suited for materials with a flat bottom and balanced weight distribution.

A related system is the power wheel conveyor, where materials are transported on a rail with mounted wheels. Power wheels are generally quieter, smoother, and suitable for lighter loads compared to power roller conveyors. The choice between the two depends on the cargo’s size, shape, and the environmental conditions like temperature and humidity.

What Is a Battery-Powered Pump?

Battery-powered pumps, operating on batteries, are generally compact. They are used in various settings, particularly where there is no access to a power source.

Such pumps are common at construction sites for draining water or pumping air. They are also convenient for leisure activities like beach outings or picnics, where they can inflate flotation devices or air cushions. Additionally, air pumps are vital for fishing enthusiasts to maintain live bait.

Uses for Battery-Powered Pumps

These pumps are ideal for locations lacking electrical power. However, being battery-operated, they have limitations in power and battery life, impacting their usage duration. Some models use non-rechargeable dry cell batteries, necessitating frequent battery replacements.

Principle of Battery-Powered Pumps

Battery-powered pumps can be categorized into two types: those for gases (like air) and those for liquids. Air pumps, also known as vacuum pumps, are used for applications like vacuum packing, while liquid pumps are utilized for transferring liquids, such as kerosene from a polyethylene tank.

The core difference between the two is that liquid pumps focus on transferring fluids from one location to another, while air pumps also alter the pressure within a container.

What Is a Wood Drill?

Wood drills are specialized tools for drilling screw holes, dowel holes, and through holes in wood. They provide a stronger joint compared to nails and are essential for secure wood assembly. Wood drills come in hand-held and stationary types, both of which are electric, with the hand-held type being more suitable for on-site drilling and the stationary type for factory use.

It’s important to select the right drill bit for your wood drill, especially considering the production of wood chips during drilling and the need for efficient chip discharge.

Uses of Wood Drills

Wood drills are commonly used in the construction of wooden buildings, furniture making, and DIY woodworking projects. The stationary type, being high-powered but immobile, is typically used in factories for large-scale processing. On the other hand, the handy type is more adaptable for on-site work and in assembled furniture, running on rechargeable batteries for enhanced efficiency.

Manual hand drills are also available for precision work, suitable for small holes. Hand drills are also used for drilling dowel holes, facilitating the joining of two pieces of wood with dowels.

Principle of Wood Drill

Wood drills operate using electricity or batteries, with a motor that converts rotational force to drill into wood. The speed and torque determine the drill bit’s capacity to make larger and deeper holes. Drill bits come in various sizes and are replaced based on the required hole diameter.

The drill bit shape is key to their function, with a pre-thread tip for accurate drilling. Stability during drilling is crucial, so using a clamp or similar device to secure the wood is recommended.

Types of Wood Drills

1. Stationary Type

Typically used in metalworking, this type can also serve as a wood drill. It allows for precise operation with a manual handle.

2. Handheld Type

For woodworking, rotary drills are ideal. While vibration drills and percussion mode drills exist, a simple rotating drill is sufficient for wood and provides a cleaner finish.

3. Drill Bits

Diverse wood drill bits are available, including cones for thick wood, hole saws for thin wood like plywood, pre-drilled hole bits for easily split wood, and dowel hole drills with depth stoppers. These bits vary in diameter, length, and shank type. Commonly used types are often sold in sets at home centers.

What Is a Single Faucet?

A single faucet, commonly found in various settings, allows for water flow adjustment by turning the handle. It is designed to dispense either cold or hot water, but not both simultaneously. A mixer is typically used for blending hot and cold water.

The design of single faucets varies, with different ranges of movement and water outlet positions. Selection should be based on ease of use for specific applications, such as in kitchens.

Uses of Single Faucets

Single faucets are prevalent due to their simple structure and ease of repair, making them a common choice in public facilities like schools, libraries, pools, and parks. They are also widely used in restaurant kitchens. While mixers have become more popular in home kitchens and bathrooms, single faucets remain the choice for washing machine connections.

Principle of Single Faucet

A single faucet consists of several components: a handle, collar screw, cover nut, spindle, faucet frame, and water outlet. Leakage issues are typically due to the deterioration of internal packings, either at the base of the handle or the faucet frame, requiring replacement of the packing or the entire faucet panel.

Single faucets can be categorized based on their mounting style: side-mounted (wall-mounted) and stand-mounted (on a stand). Horizontal faucets, commonly used in homes, allow 360° rotation of the spout and include types with hose couplings for washing machines. Standing faucets, suitable for washbasins, come in push-button and automatic sensor-activated varieties.

What Are Electrician’s Nippers?

Electrician’s nippers are specialized tools designed for cutting electric wires, particularly in the construction of electrical equipment. They can handle steel and copper wires, and come equipped with features for stripping wire insulation.

These tools are capable of cutting through various types of cables, including VVF cables, with minimal effort. However, it’s important to use them carefully to prevent damage to the blades.

Uses of Electrician’s Nippers

Electrician’s nippers are widely used in electrical installation work, preparing wires for home appliances, communication devices, and precision equipment. High-quality electrician’s nippers are sharp and durable, but require careful handling to avoid damaging the blades when cutting wires beyond their capacity.

Principle of Electrician’s Nippers

The design of electrician’s nippers allows them to cut through both the soft plastic sheath of a cable and the metal wire itself. Achieving a balance between sharpness for easy cutting and durability to withstand cutting metal is a challenge that manufacturers tackle through various techniques, including specialized grinding or coating of the cutting edge.

Stronger versions, known as strong nippers, are designed for cutting thick, bare wires or even piano wire, though their cutting surfaces may leave a rough finish.

Types of Electrician’s Nippers

Different varieties of electrician’s nippers are available to suit different needs and applications. Selecting the right type depends on the specific requirements of the task at hand.

1. Classification by Blade Shape

Electrician’s nippers come in flat, round, and strong varieties. Flat and round types offer a clean cut, but are not suitable for thick wires due to their thin blades. The strong type can handle thicker wires but leaves a rougher cut surface.

2. Size

Available in various sizes, standard electrician’s nippers are 150 mm in length, with larger options at 200 mm and smaller ones at 125 mm. The larger sizes offer greater cutting capacity but may be less convenient for some users depending on hand size and working conditions.

3. Additional Functions

Some electrician’s nippers include additional features like wire strippers and crimping functions, enhancing their versatility. Models with double power mechanisms can cut hard wires, such as piano wire, more easily. Others may have antibacterial or luminescent grips for hygienic use or visibility in low light conditions.

What Are Mini Pliers?

Mini pliers are tools used for cutting thin metals, resins, and other relatively small, hard materials.

Because the blades are sharp, they may break and are not suitable for cutting hard metals. They are suitable for fine cutting work and can be used to cut fine metal wires and plastic gates.

Uses of Mini Pliers

Typical applications of mini pliers are copper wire, electric wire, and plastic. They are highly versatile and are used in a variety of situations, from general households to industry and academia.

By squeezing the lever, force is applied to the blade. The blade can easily cut objects without requiring much effort. Because it is easy to reach and work in tight spaces, it is often used in situations that require detailed work, such as crafts.

For more efficient work, mini pliers with a return spring are also often used. The spring returns the blade to its original position, allowing continuous operation.

Principle of Mini Pliers

Nippers are tools that use sharp blades to cut copper wire, electric wire, resin, and other materials. The thinner the tip of the blade, the greater the pressure applied, so there are different types depending on the purpose and application. The larger the size, the greater the force, so larger nippers are suitable for thicker or harder materials.

Mini Pliers are similar to plastic nippers. Micro nippers can also be used for cutting and micro-machining of gates (passageways formed when molten plastic flows into molds) that occur during plastic molding. However, mini pliers are not limited to plastics, but are also used for cutting thin wires and copper wires. They are suitable for cutting wires with a diameter of 1~2 mm.

The shape of the blade surface can be either a rounded round blade or a straight blade. Straight blades are suitable when the cutting surface needs to be flat.

Many types are available in terms of size and tip blade shape. There is a wide range of sizes from 120~200 mm, and the appropriate mini pliers should be selected based on the ease of gripping and the amount of cutting force.

What Is a Water Pump Plier?

Water pump pliers are versatile tools used for gripping pipes, nuts, hex bolts, and other objects. They offer a broader gripping range compared to other pliers, such as nippers, and feature adjustable width.

Designed initially for gripping circular objects like pipes, they are equipped with a grooved gripping opening for a stable and secure grip.

Available in various sizes, from small to large, water pump pliers allow for selection based on individual convenience and task requirements.

Usage of Water Pump Pliers

Primarily used in plumbing, water pump pliers are also essential for electrical tasks, including gas and electricity-related work. Their ability to grip pipes and various-sized parts makes them particularly useful. The angled bend and longer handles enhance ease of use, especially in confined spaces.

Principle of Water Pump Pliers

Compared to standard pliers, water pump pliers have a unique bent shape at both the gripping point and handle, facilitating the tightening of nuts and pipes. The gripping port features a jagged groove for improved grasp.

The grip width of water pump pliers is adjustable in 5 to 6 steps, allowing for precise control. As the pincer is adjusted, the connecting part moves through a groove, enabling the widening or shortening of the pincer width.

Typically made of steel, the pincers are robust but may damage softer objects. For delicate items, opt for pliers with a plastic gripping port. Sizes range from about 5 inches for smaller models to 22 inches for larger ones, catering to various object sizes.

What Is a Track Dolly?

A track dolly is a type of dolly specifically designed to move along a track, commonly used in factories and warehouses for transporting materials and products. Due to their design, track dollies provide high stability by having a large contact area with the track. This stability is crucial for high-speed operation and maneuvering around curves. Typically, their wheels are made of steel or other metals to create optimal frictional forces with the track, reducing the force required for transport and thus enhancing efficiency.

However, proper track maintenance is essential to ensure the accurate and safe operation of track dollies. This includes maintaining the track’s inclination, and curve radius, and ensuring it is free of obstacles.

Uses of Track Dollies

Track dollies have diverse applications:

1. Logistics and Freight Transportation

They are widely used in warehouses and factories to transport large quantities of goods and cargo, moving efficiently on rails to save labor and increase work efficiency.

2. Moving Industrial Equipment

Track dollies facilitate the movement of heavy industrial equipment within a building for rearrangement or maintenance, enabling precise placement of the equipment.

3. Personnel Transportation

In large facilities like airport terminals and exhibition halls, track dollies are implemented for efficient personnel transportation.

Principle of Track Dollies

Track dollies are designed to move on tracks, generally comprising rails, a bogie, and a drive mechanism. The rails are fixed to the floor or ground, dictating the dolly’s operating path. The bogie frame supports the dolly on the rails, with wheels that adhere closely to the rails for stable movement. Many track dollies are equipped with a drive mechanism, often electric motors, for autonomous movement.

How to Select a Track Dolly

When selecting a track dolly, consider:

1. Type of Material to Be Transported

The type of material, such as lightweight boxes, long objects, or liquid containers, dictates the dolly’s design, including the shape of the load bed and fixing devices.

2. Loading Capacity

Choose a dolly with the appropriate loading capacity based on the weight of the cargo, and consider future demand increases.

3. Drive Source

Consider the power source for the motor, focusing on efficient and sustainable options.

4. Transport Speed

Select a speed appropriate for the material type, transport distance, and job requirements. Also, consider the dolly’s ability to brake or decelerate in certain areas for safety and efficiency.

What Is a Jig Part?

A jig is a positioning device used in machine tools to consistently produce products of high quality in large quantities.

Jigs are also employed to securely hold products in place. When a product is set and fixed within a jig, it remains in the same position, ensuring stability during processes like drilling. The jig is equipped with several components to position the product accurately.

These components include positioning pins, reference seat blocks, clampers, and rough guides.

Applications of Jig Parts

Below are examples of how jig parts are utilized:

1. Machining Jigs
   Jigs are employed on machine tools such as machining centers, lathes, and milling machines to eliminate the need for operators to make positioning adjustments for each product.
2. Assembly Jigs
   In the assembly process, industrial robots are used to install components like bolts.
   Unlike human workers, products must be consistently positioned; otherwise, assembly defects may occur when using industrial robots.
   In the inspection process utilizing image processing, the product is assessed by comparing it to registered image data.

Features of Jig Parts

Key features of jig parts are explained for each type of jig component:

• Positioning Pin
  These pins are inserted into the material hole, serving as the processing reference for the product.
  Typically, a pair of pins is used, one with a round tip and the other with a diamond tip.
  The round pin determines the product’s position, while the diamond pin determines the phase.
  The reason for having one pin as diamond-shaped is to ensure proper product placement, as it would be challenging with two round pins.
• Reference Seat Block
  This component is attached to the jig to ensure the parallelism of the product.
  It is designed to receive the position known as the reference seat of the product.
  Normally, three points are used for receiving the product, as using four or more points could miss the reference seat.
  To prevent incorrect product placement, some reference seats have air holes to monitor pressure inside the reference seat.
• Clamper
  The clamping mechanism holds the product firmly in place, preventing movement under load during processing.
  Various power sources, such as springs, air, and hydraulic pressure, are used to secure the product. The selection is based on the clamping force required to withstand the processing load.