Portable and rechargeable regular hexagonal die-free crimping machine and its operation method

Abstract

The invention provides a portable charging regular hexagon die-exchange-free crimping machine for an electronic stepless adjustment control copper-aluminum cable terminal and a connecting sleeve and an operation method in the technical field of crimping of electric wires comprising coaxial cables. The portable charging regular hexagon die-exchange-free crimping machine is characterized by comprising a die-exchange-free crimping head, an adapter, a charging hydraulic tool and an electronic stroke control box, wherein the adapter is connected to a hydraulic oil cylinder of the charging hydraulic tool and then the other end is connected with the die-exchange-free crimping head; the electronic stroke control box is arranged at the upper part of the die-exchange-free crimping head; the die-exchange-free crimping head comprises a crimping head and a movable module; the crimping head is fixedly connected to the top end of the adapter; the movable module is arranged in the adapter, one end of the movable module is matched with the crimping head and the other end is connected with a push rod of the hydraulic oil cylinder; an inductor is arranged at the top of the movable module and is matched with an inductor in the electronic stroke control box; and after the two inductors generate signals, the charging hydraulic tool stops supplying electricity to the hydraulic oil cylinder.

Description

technical field [0001] The invention is used in the technical field of crimping electric wires and cables including coaxial cables, and particularly relates to the electronic control technology of crimping size and the combination with rechargeable hydraulic tools to produce a brand-new portable wire and cable crimping tool. [0002] The invention also relates to an operation method of a portable wire and cable crimping tool. Background technique [0003] The crimping of copper-aluminum wire and cable terminals has long required the use of fixed crimping dies to connect wires and cables with terminals or splice sleeves. The general crimping technology is based on the matching of stranded wires with fixed standard terminals. With a fixed compression ratio, measure to judge whether the crimping quality meets the grip force required by the wire and cable for terminal crimping. Generally, the compression ratio of the regular hexagonal crimping is 1:0.827. With the diversificatio...

AI Technical Summary

Problems solved by technology

[0003] The crimping of copper-aluminum wire and cable terminals has long required the use of fixed crimping dies to connect wires and cables with terminals or splice sleeves. The general crimping technology is based on the matching of stranded wires with fixed standard terminals. With a fixed compression ratio, measure to judge whether the crimping quality meets the grip force required by the wire and cable for terminal crimping. Generally, the compression ratio of the regular hexagonal crimping is 1:0.827. With the diversification of market products and the use of Changes have made the original existing wire and cable connection work more complicated, and the wire structure that needs to be crimped is no longer limited to ordinary twisted wires. At present, due to the rapid development of high-speed railways, intercity trains, and electric vehicles, these Mobile devices powered by electricity require reliable cable connections. At the same time, the cables used must meet the requirements of being soft enough to absorb vibration and easy to bend cables in narrow spaces. Therefore, the demand for crimping of flexible cables has become a hot topic. , but the structure of the conductor of the flexible cable is made of multi-core thin strands. In order to achieve a certain degree of softness and bendability, the structure of the conductor itself is relatively large. In short, the structure of the conductor is loose.

[0004] Generally, the standard compression ratio of terminal crimping is 1:0.827, but for flexible rubber cables with a loose structure that requires a larger compression ratio, such a compression ratio cannot be satisfied by using a general crimping tool with a fixed mold. Therefore, the use of sliding regular hexagonal die-free crimping machine was born accordingly.

[0005] The original sliding type regular hexagonal free die crimping machine uses the built-in stroke control device of the hydraulic cylinder of the crimping tool to control the stroke control of the sliding die to crimp the size, so that the compression ratio of the crimping die can be set according to the requirements of the operator. , At present, the crimping size that can be set by the patented machine of this application is 10-400mm 2 , such a variable compression size control is just suitable for the market demand of flexible cable crimping. However, due to the sophisticated structure of the hydraulic cylinder of such a crimping machine, and the operator must be careful to operate, a little carelessness may easily lead to damage to the travel control device of the tool .Thus often lead to:

[0006] - Piston travel cannot be precisely controlled

[0007] -The locking valve seat inside the hydraulic cylinder cannot be closed normally, resulting in the hydraulic oil leakage of the cylinder and the breakage of the piston, etc.

[0008] - Problems such as the crimping size cannot be set

[0009] Since the processing of wires and cables is not limited to the needs of production line operations, there are more and more jobs that need to provide a lighter and more convenient operation mode, which is convenient for the construction site or to provide equipment for outdoor operation without power supply. At present, there are All the rechargeable hydraulic tools on the market use the pressure switch to achieve the function of automatic stop or automatic reset of the working pressure, which cannot accurately control the stroke of the piston, especially in the crimping, so the only one in the market has always been It is necessary to replace the crimping method of the fixed-size mold, and the fixed-size mold requires a high size for the crimping terminal or the sleeve and the wire. A slight change in size will easily lead to incomplete crimping, and it may happen after crimping. A large flash causes the discharge of the cable after power transmission, or the crimping size is not enough to cause insufficient grip between the terminal / sleeve and the wire, resulting in the wire and the terminal / sleeve falling off or poor contact resulting in high temperature Cause problems such as wire fire

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