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What is a terminal block.
The terminal role is very well expressed, the terminal is actually a kind of connector, which is applied to facilitate the connection of the wire, it is actually a piece of metal sealed in the insulating plastic, there are holes at both ends to insert the wire, and there are screws for fastening or loosening, such as two wires, sometimes need to be connected, sometimes need to be disconnected, then you can use the terminal to connect them, and can be disconnected at any time, without having to solder them or entangle them together, it is very convenient and fast.
The terminal block is a kind of accessory product used to realize the electrical connection, and it belongs to the connector in the industry. With the increasing degree of industrial automation and the increasingly strict and accurate requirements of industrial control, the demand for terminal blocks is gradually increasing. The rapid development of the electronics industry has made the use of terminal blocks more and more extensive and varied.
Terminal blocks can be divided into WUK terminal blocks, European terminal block series, plug-in terminal series, transformer terminal block, building wiring terminal block, fence terminal series, spring terminal series, track terminal series, wall terminal series, optoelectronic coupling terminal series, 110 terminal, 205 terminal, 250 terminal, 187 terminal, ring terminal, ring terminal, ring terminal, ring terminal, ring terminal, 2 ring terminal, ring terminal, ring terminal, 11 ring terminals, 13 ring terminals, flag series terminals and sheath series, all kinds of ring terminals, tubular terminals, terminal blocks, copper and iron strips -04), etc. At present, the most widely used are PCB board terminals, hardware terminals, nut terminals, and spring terminals. Due to the wide range of applications of terminal blocks, Polaris Power Transmission and Distribution has specially summarized and sorted out the relevant knowledge content of terminal blocks for everyone's collection.
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The thickness of the metal sheet in the terminal crimping profile should be me, so we should know her correctly, and it is very safe for her to use it. Metal sheets are also very common in household appliances, so you can do a scientific proportioning.
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The terminal crimp height is the distance from the top of the wing to the bottom of the substrate after the terminal is crimped.
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The thickness of this metal sheet must be in accordance with the standard, otherwise it will affect the quality of its products.
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What does the thickness of the metal sheet in the terminal crimp bubble surface mean? That's what it means just to make this metal thicker than how many centimeters, how many millimeters.
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The thickness of the metal sheet in the pier crimping profile, which means that you cut off a piece of this, and then its thickness is in front of you.
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1. Height:
Terminal crimping. Height refers to the distance from the top of the wing to the bottom of the base after the terminal is crimped. Usually the crimping height of the terminal is provided by the first supplier of the terminal, and the actual height is determined by the pressure of the terminal crimping machine. If the pressure is too high during the crimping process, it will cause the crimping wing to touch the bottom or the wall, and it can also cause the terminal to break due to excessive force.
If the pressure is too low during the crimping process, it will cause crimping gaps and lead to unqualified terminals.
2. Width: Generally, the terminal crimping width is provided by the terminal supplier, and the actual size of the width is determined by the blade supplier. If the blade is opened too wide, it will cause the crimping wing of the terminal to bottom out during the crimping process, resulting in failure. If the blade is too narrow, the terminal material will be broken due to excessive force during the crimping process, and the burr will be too long and unqualified.
The terminal crimping standard tester is a precision testing and analysis equipment specially developed for the quality inspection of the wiring harness industry, the whole system is composed of terminal cutting equipment, grinding equipment, corrosion cleaning, section image acquisition system, wiring harness terminal measurement and analysis system and other units, using ergonomic design, modular combination, assembly line workflow, so that the operation is more convenient and fast. The complete inspection system can complete the processing and analysis of a terminal within 5 minutes, which greatly improves the speed of terminal section quality inspection.
The terminal crimp standard inspection microscope is an organic combination of a traditional optical microscope and a computer (digital camera) through a photoelectric converter, which can not only observe through the eyepiece, but also observe real-time dynamic images on the computer monitor, and can perform, measure, analyze, save and print the required **.
Inexpensive hand tools do not have the insulating sheath crimp adjustment function. Hand tools are used to crimp a small number of terminals. You can't adjust the crimp of the insulating sheath on a hand tool, however, in many crimping situations, the crimp of the insulating sheath that pierces the insulating sheath can still be considered a good crimp.
This standard only applies to hand tools because of their slow crimping cycle speeds. If the insulation sheath is punctured by the insulation sheath, the core tends to move in both directions, but is not damaged.
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The crimping height can be measured by micrometer or caliper, but these two measurement methods are contact measurements, the error will be relatively large, and the measured results are relatively single-surface, the best measurement method is to use the Oka terminal section analyzer to measure, can completely measure all the data of the terminal and carry out automatic analysis of the software.
Standard for riveting force of wire terminals. The device manufacturer will mark the length of the cable stripping and the small terminal stamping machine on the device. The terminal crimp length should match it.
Formulate. The main consideration is whether the temperature rise of the additional current can be sufficient under the useful lap area; In addition, if it is too long and exceeds the wiring port of the device, there will be leakage electric shock, which will also affect the insulation interval and creepage interval.
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Generally, when small processing factories make terminals, they basically only do pull-out force tests, which illustrates"Cottage"meaning. The terminal has four cosmetic parameters: CH (height of the crimping core); IH (height of the pressed rubber part); CW (width of the crimping core); IW (width of the adhesive part).
When setting parameters, three basic tests should be carried out, such as slicing, pulling force, and voltage drop. Generally, each terminal of a large manufacturer has its parameters, such as JST, AMP, etc. If not, please tell me the name of the terminal and the specification of the wire, and I will help you complete it.
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No, the outer diameter of the wire is the outer diameter of the entire cable, because there is usually a filler material in the cable, so the terminal crimping must be stripped of the skin, so for different cables, the theoretical crimping thickness of the same wire gauge is different, but it is basically smaller than the wire gauge. After all, you have to peel the skin, divide the line or something.
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It is formulated according to the terminal section and compression ratio. The crimp parameter is a range, not a unique one.
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is the diameter of the press-fitting. -3 is the terminal opening diameter. Terminals can be crimped with general tools, and there is no need for spot welding.
One of the terminals is actually the lugs that are pressed on the wire for the convenience of screwing. Cold pressing is the opposite of hot pressing, that is, it can be crimped without heating.
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Upstairs is misleading、、、 is the diameter of the pressure interface, -3 is the diameter of the terminal port. It is understood that the national standard generally has or. The meaning of the following letter is the shape of the terminal block, Y o I type.
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S indicates the fork terminal, V indicates the insulating sleeve, indicates the range of use of the wire, and indicates the size of the bolt mouth.
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is the square number of the wire, 3 is the diameter of the inner diameter of the terminal, and we do wholesale of these terminals.
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The letters generally don't matter, and the numbers are the cross-sectional area that can be wired.
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The terminal cross-section analyzer is mainly used to detect a condition inside the terminal after crimping, such as tightness, whether there is a crimping void and so on. These internal factors are all potential safety hazards, so it is absolutely necessary to do a sectional analysis.
At present, the domestic manufacturers of this set of equipment are relatively good, and the manufacturers of the round hall Lu are Suzhou Oka Precision Optical Instrument Factory, and you can search for them by 100 volt hands. Their service is quite in place, providing on-site installation and commissioning training nationwide. **It is also quite affordable, and it is a very cost-effective orange belt in China.
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You can use the German brand Croc EKM60IDCFM, a slim tool that can be used to crimp common cable terminals without the use of sleeves or molds! There is no need to invest more in the cost of equipping multiple molds. It not only saves labor, but also saves the cost of banquet ear tools.
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Duplex crimping, also known as composite crimping, generally refers to the over-crimping of two materials with different conductive properties to eliminate the phenomenon of overheating and ablation of the contact surface of different conductive materials under high current. It is mostly used for the over-connection of copper and aluminum. In this case, the corresponding composite terminal is required for crimping.
Cold pressing generally refers to the compression and lifting method of connecting the wire and terminal at room temperature through a special cold pressing tool and pressing without the addition of external heat source fusion or softening. For example, hydraulic cold pressure pliers are such tools. This type of crimping is mainly used for signal circuits or lines with low currents, as well as for high-voltage lines.
Soldering. The melting point of special solder is about 300-400 degrees Celsius. After the wire and terminal are properly pressed and cleaned as necessary, the joint surface of the wire and the terminal is heated with a special soldering tool, and when the temperature of the joint surface meets the soldering requirements, solder is added to melt the solder and fully fill the gap of the joint surface.
Remove the welding equipment, and insulate the welding parts and leakage points after cooling. In this way, the contact is firm and durable, and the resistance to electrical corrosion is strong. It can be used for the treatment of high-current line contacts and important signal line contacts. Cherry blossoms.