CN113967770A - Coaxial cable joint welding and testing device - Google Patents
Coaxial cable joint welding and testing device Download PDFInfo
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- CN113967770A CN113967770A CN202111281475.9A CN202111281475A CN113967770A CN 113967770 A CN113967770 A CN 113967770A CN 202111281475 A CN202111281475 A CN 202111281475A CN 113967770 A CN113967770 A CN 113967770A
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- 238000003466 welding Methods 0.000 title claims abstract description 203
- 238000012360 testing method Methods 0.000 title claims abstract description 55
- 238000004146 energy storage Methods 0.000 claims abstract description 23
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 13
- 238000005476 soldering Methods 0.000 description 15
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 101100346932 Mus musculus Muc1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Resistance Welding (AREA)
Abstract
The invention provides a welding and testing device for a coaxial cable connector, which comprises an energy storage spot welding unit, a resistance testing unit, an electric unit, a main control unit, a display unit, a power supply unit and an operation unit, wherein the energy storage spot welding unit is connected with the resistance testing unit; the power supply unit provides direct current voltage for other units; the operation unit is electrically connected with the main control unit; the main control unit is respectively electrically connected with the electric unit, the display unit and the resistance testing unit and controls the electric unit, the display unit and the resistance testing unit to work; the electric unit is electrically connected with the energy storage spot welding unit, the welding end of the energy storage spot welding unit performs welding operation on a welding object, and the testing end of the resistance testing unit measures the resistance of the welding spot of the welding object. The invention changes manual welding into automatic welding, greatly reduces welding difficulty, and simultaneously, the double-point overcurrent welding method has small welding point and firm welding, thereby avoiding the situations of overlarge welding point and insufficient welding in the traditional method. The invention utilizes the lithium iron phosphate battery pack as an energy source to ensure that the equipment still keeps normal work under the condition of no alternating current.
Description
Technical Field
The invention relates to the technical field of coaxial cable connector welding, in particular to a coaxial cable connector welding and testing device.
Background
In an electric power system, a 2M coaxial cable is widely used for carrying various services of electric power communication, such as PCM (Pulse Code Modulation) equipment, a scheduling data network, an integrated data network, a relay protection multiplexing protection channel, a stability channel, a program controlled switch, and the like. Coaxial cable connectors (2M connectors) are also one of the most common communication interfaces in power systems. At present, the 2M head is manufactured by adopting an electric soldering iron and a soldering tin wire for hot melt welding. The welding mode needs two persons to be matched for welding, one person fixes the 2M head and the coaxial cable, and the other person holds the electric soldering iron and the soldering tin wire for welding. The length of a welded notch is about 2.5mm, a welding spot is narrow and small, the requirement on the welding process level of an operator is high, insufficient welding and short circuit of the welding spot are easily caused, and once the problems of insufficient welding, overlarge welding head and the like occur, the 2M head needs to be cut off for re-welding. The length of the 2M line is inconsistent due to the waste of the 2M head, the attractiveness of the construction process is affected, and the time consumed by operation is greatly prolonged. And after welding, conducting and insulating tests of shell-shell, shell-core and core-core are carried out. The conventional testing method is that a universal meter is required to be manually used for testing the conduction and insulation performance of the connector after welding is finished, and the efficiency is extremely low. The 2M digital wiring module of 1 16 units needs 32 2M heads to the internal line side of the optical device side, the external line side needs 32 2M heads, and the opposite device side still needs 32 2M heads. One substation is generally provided with 8 16-unit digital wiring modules, and at least 768 2M digital heads need to be manufactured. The conventional method has a soldering and testing time of about 2 minutes per 2M head. To complete the welding of all 2M digital heads of a substation, a large amount of time is required to complete, and the working efficiency is low.
In addition, the conventional welding method has the following defects and shortcomings:
1. the soldering is carried out by using the method for melting the solder wire by the electric soldering iron, the temperature of the solder wire by the electric soldering iron is high, accidents such as fire disasters, personnel scalding and the like are easily caused by improper operation, and the safety is poor.
2. In the traditional method, the soldering tin wire is used for welding the coaxial cable core and the 2M connector, and the soldering tin is easy to oxidize after long service time, so that the welding point is in poor contact, and the service safety is threatened.
3. Because the welded notch is small, the traditional method is difficult to weld and cannot be operated by one person, and two persons are required to be matched to complete the welding.
4. The traditional welding method needs 220V alternating current, and welding can not be carried out under the condition of no alternating current power supply.
Disclosure of Invention
The invention aims to provide a coaxial cable connector welding and testing device which can solve the problems that in the prior art, a coaxial cable connector needs two persons to operate in a cooperation mode, the working efficiency is low, the safety is poor and the like.
The purpose of the invention is realized by the following technical scheme:
a coaxial cable joint welding and testing device comprises an energy storage spot welding unit, a resistance testing unit, an electric unit, a main control unit, a display unit, a power supply unit and an operation unit; the power supply unit provides direct-current voltage for other units; the operation unit is electrically connected with the main control unit; the main control unit is respectively electrically connected with the electric unit, the display unit and the resistance testing unit and controls the electric unit, the display unit and the resistance testing unit to work; the electric unit is electrically connected with the energy storage spot welding unit, the welding end of the energy storage spot welding unit performs welding operation on a welding object, and the testing end of the resistance testing unit measures the resistance of the welding point of the welding object.
Further, the energy storage spot welding unit comprises a lithium iron phosphate battery, an MOS (metal oxide semiconductor) tube, a welding gauge pen positive end and a welding gauge pen negative end; the positive electrode of the lithium iron phosphate battery is electrically connected with the drain electrode of the MOS tube, and the negative electrode of the lithium iron phosphate battery is electrically connected with the negative end of the welding gauge pen; and the source electrode of the MOS tube is electrically connected with the positive end of the welding gauge pen.
Further, the operation unit controls the welding arm of the electric unit to move and contact a welding object through the main control unit; the main control unit automatically identifies the contact state of the welding gauge pen positive end and the welding gauge pen negative end of the energy storage spot welding unit and a welding object, when the welding gauge pen positive end and the welding gauge pen negative end of the energy storage spot welding unit are in contact with the welding object, the MOS tube is controlled to be conducted, so that large current is generated between the welding gauge pen positive end and the welding gauge pen negative end and the welding object, the large current generates high temperature to weld the welding object, and the MOS tube is controlled to be turned off after welding is completed; the operation unit controls the resistance test unit to input constant current to the welding point through the main control unit, and the main control unit collects voltage changes of the welding point through the resistance test unit, calculates the resistance value of the welding point and displays the resistance value through the display unit.
Furthermore, the operation unit includes a first switch, a second switch and a third switch, one end of the first switch, one end of the second switch and one end of the third switch are respectively connected to the three control ports of the main control unit, and the other end of the first switch, the other end of the second switch and the other end of the third switch are grounded.
Furthermore, the resistance testing unit comprises a third relay, a constant current source, a voltage sampling circuit and a rectification source, wherein one end of the third relay is connected with the negative end of the welding meter pen, and the other end of the third relay is connected with the first end of the rectification source; the second end of the rectifying source is connected with the positive end of the welding gauge pen after being connected with the constant current source in series; the voltage sampling circuit is connected between the first end and the second end of the rectifying source.
Furthermore, the electric unit comprises a direct current power supply, a second relay, a power supply and an electric push rod, and the direct current power supply and the electric push rod are electrically connected through the second relay and the power supply.
Furthermore, the display unit consists of four 7-bit common-cathode nixie tubes.
Compared with the prior art, the coaxial cable connector welding and testing device has the following beneficial effects:
1. the invention uses the principle of double-point overcurrent welding, when in work, two electrodes are pressed on the copper core of the 2M terminal, so that two layers of metal form a certain contact resistance under the pressure of the two electrodes, the welding current forms instant thermal welding at the two contact resistance points when flowing from one electrode to the other electrode, and the welding current instantly flows from the other electrode to the electrodes along the two workpieces to form a loop, thereby not damaging the internal structure of the welded workpieces. Therefore, the high-temperature soldering iron is not needed for heating, accidents such as fire disasters and personnel scalding caused by improper operation are avoided, and the safety is high.
2. The invention uses the principle of double-point overcurrent welding, does not need to use soldering tin for welding, avoids the defects of poor contact of welding points and the like caused by the oxidation of the soldering tin, and improves the safety of services borne by the joint.
3. The welding process of the invention realizes automation, the 2M head is placed on a special fixture of a welding device, the copper core welded by the terminal is adjusted to be aligned with the lower welding head, the welding head above the press switch is driven by the air pump to move downwards to be contacted with the copper core of the 2M head and the copper core of the welding wire, the heat welding is instantly completed, and the welding head is automatically moved away after the welding is completed to complete the welding operation. The operation can be completed by one person, and the labor is saved.
4. The invention changes manual welding into automatic welding, greatly reduces welding difficulty, simultaneously has small welding point and firm welding by the double-point overcurrent welding method, and avoids the conditions of overlarge welding point and insufficient welding by the traditional method.
5. The welding test integration is realized by fusing the welding platform and the test platform, connecting the direct current constant current source at the two ends of the welding piece and the welded piece when welding the fixed joint and the coaxial cable, controlling the direct current constant current source to be connected after the welding is finished through the relay, and verifying the resistance value of the welding point.
6. The invention utilizes the lithium iron phosphate battery pack as an energy source, automatically adjusts the output voltage and power through the direct current converter, provides a welding energy source for the pulse spot welding device, and ensures that the equipment still keeps normal work under the condition of no alternating current.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block circuit diagram of a coaxial cable connector soldering and testing apparatus of the present invention;
fig. 2 is a schematic circuit diagram of the coaxial cable connector soldering and testing apparatus of the present invention.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The coaxial cable connector welding and testing device comprises an energy storage spot welding unit 101, a resistance testing unit 102, an electric unit 103, a main control unit 105, a display unit 106, a power supply unit 107 and an operation unit 108, as shown in fig. 1. The power supply unit 107 supplies a direct-current voltage to other units. The operation unit 108 is electrically connected to the main control unit 105. The main control unit 105 is electrically connected to and controls the operation of the electric unit 103, the display unit 106, and the resistance test unit 102. The electric unit 103 is electrically connected with the energy storage spot welding unit 101, the welding end of the energy storage spot welding unit 101 performs welding operation on a welding object, and the testing end of the resistance testing unit 102 measures the resistance of the welding point of the welding object.
The working principle of fig. 1 is: the operation unit 108 controls the welding arm of the electromotive unit 103 to move and contact the welding object 104 through the main control unit 105. The main control unit 105 automatically identifies the contact state of the positive and negative welding styluses of the energy storage spot welding unit 101 and the welding object 104, and controls the conduction of the MOS tube of the energy storage spot welding unit 101 after the positive and negative welding styluses are contacted with the welding object 104, so that large current is generated between the positive and negative welding styluses and the welding object 104. The high current generates high temperature to weld the welding object 104, and the MOS tube is turned off after the welding is finished. The operation unit 108 controls the resistance test unit 102 to input a 1A constant current source to the welding point through the main control unit 105, and the main control unit 105 collects voltage changes of the welding point through the resistance test unit 102 and calculates a resistance value of the welding point, and displays the voltage changes through the display unit 106. The operator judges whether the welding point is qualified or not through the resistance value of the welding point, touches the key of the operation unit 108 to finish when the welding point is qualified, the operation unit 108 finishes and resets each unit through the main control unit 105, and the welding test work is finished. And when the welding is not qualified, the starting key of the operation unit 108 is touched, and the welding and testing processes are repeated again until the welding is qualified.
Further, the energy storage spot welding unit 101 comprises a lithium iron phosphate battery B1, a MOS (metal oxide semiconductor) tube Q1, a positive welding stylus terminal and a negative welding stylus terminal. And the positive electrode of the lithium iron phosphate battery B1 is electrically connected with the drain electrode of the MOS tube Q1, and the negative electrode of the lithium iron phosphate battery B1 is electrically connected with the negative end of the welding gauge pen. The source electrode of the MOS tube Q1 is electrically connected with the positive end of the welding gauge pen.
In fig. 2, the MCU1 is the main control unit 105, the MCU1 detects whether the contact between the welding stylus and the welding object 104 is good, and then controls the on/off of the Q1 to enable a large current to flow between the positive terminal of the welding stylus, the coaxial cable, the 2M connector, and the negative terminal of the welding stylus. Lithium iron phosphate battery B1 lithium iron phosphate battery pack provides spot welding short circuit current.
Further, the operation unit 108 includes a switch S1, a switch S2, and a switch S3, one end of the switch S1, one end of the switch S2, and one end of the switch S3 are respectively connected to three control ports of the MCU1, and the other end of the switch S1, the other end of the switch S2, and the other end of the switch S3 are grounded.
Further, the resistance testing unit 102 comprises a relay K3, a constant current source I1, a voltage sampling circuit V1 and a rectification source DC2, wherein one end of the relay K3 is connected with the negative end of the welding gauge pen, and the other end of the relay K3 is connected with the first end of the rectification source DC 2. The second end of the rectifying source DC2 is connected in series with a constant current source I1 and then is connected to the positive end of the welding meter pen. The voltage sampling circuit V1 is connected between the first terminal and the second terminal of the rectifying source DC 2.
The switch S2 of the operation unit 108 is touched lightly, the MCU1 detects whether the welding state is achieved, when the welding state is not achieved, the MCU1 controls the relay K3 to be closed, the constant current source I1 flows through the positive end of the welding meter pen, the coaxial cable, the 2M connector and the negative end of the welding meter pen, the voltage sampling circuit V1 collects voltage and feeds the voltage back to the MCU1, the MCU1 calculates a resistance value and sends the resistance value to the display unit 106, namely D1 and D1 in the graph 2 display the resistance value.
Further, the electric unit 103 comprises a direct current power supply DC1, a relay K2, a power supply M and an electric push rod M1, wherein the direct current power supply DC1 and the electric push rod M1 are electrically connected with the power supply M through the relay K2.
The switch S3 of the touch operation unit 108 is touched lightly, the MCU1 controls the relay K2 to be closed, the power supply is connected with the power supply M, the electric push rod M1 works to push the welding arm to the welding meter pen positive end, the coaxial cable, the 2M connector and the welding meter pen negative end to be in close contact, the switch S3 is touched lightly again, the relay K2 is disconnected, and the electric push rod M1 is reset.
The welding object 104 is composed of a 2M connector and a BNC coaxial cable.
The main control unit 105 is composed of a single chip microcomputer, a driving circuit, a sampling circuit, a clock circuit, a communication circuit and the like, and mainly has the functions of controlling the welding of the energy storage spot welding unit, the pushing of the electric push rod, the sampling and operation of the resistance test, the display of the display unit and the like.
The display unit 106 is composed of 4 7-bit common-cathode nixie tubes, and display information is provided by the MCU1 and displayed according to the instruction of the MUC 1.
The power supply unit 107, namely B1, charges the lithium battery by a P1 external alternating current 220V-to-5V charger, and the DC1 internal direct current 5V-to-direct current 12V boosting power supply provides electric energy for the electric push rod M1. The DC2 is internally provided with a DC 5V-to-DC 3.3V rectifier which provides power for the MCU1 and provides power for the constant current source I1.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is for the purpose of illustrating embodiments of the invention and is not intended to limit the invention, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the invention shall fall within the protection scope of the invention.
Claims (7)
1. A coaxial cable joint welding and testing device is characterized by comprising an energy storage spot welding unit, a resistance testing unit, an electric unit, a main control unit, a display unit, a power supply unit and an operation unit; the power supply unit provides direct-current voltage for other units; the operation unit is electrically connected with the main control unit; the main control unit is respectively electrically connected with the electric unit, the display unit and the resistance testing unit and controls the electric unit, the display unit and the resistance testing unit to work; the electric unit is electrically connected with the energy storage spot welding unit, the welding end of the energy storage spot welding unit performs welding operation on a welding object, and the testing end of the resistance testing unit measures the resistance of the welding point of the welding object.
2. The coaxial cable joint welding and testing device of claim 1, wherein the energy storage spot welding unit comprises a lithium iron phosphate battery, a MOS tube, a positive welding stylus terminal and a negative welding stylus terminal; the positive electrode of the lithium iron phosphate battery is electrically connected with the drain electrode of the MOS tube, and the negative electrode of the lithium iron phosphate battery is electrically connected with the negative end of the welding gauge pen; and the source electrode of the MOS tube is electrically connected with the positive end of the welding gauge pen.
3. The coaxial cable joint welding and testing device of claim 2, wherein the operation unit controls the welding arm of the electric unit to move and contact a welding object through the main control unit; the main control unit automatically identifies the contact state of the welding gauge pen positive end and the welding gauge pen negative end of the energy storage spot welding unit and a welding object, when the welding gauge pen positive end and the welding gauge pen negative end of the energy storage spot welding unit are in contact with the welding object, the MOS tube is controlled to be conducted, so that large current is generated between the welding gauge pen positive end and the welding gauge pen negative end and the welding object, the large current generates high temperature to weld the welding object, and the MOS tube is controlled to be turned off after welding is completed; the operation unit controls the resistance test unit to input constant current to the welding point through the main control unit, and the main control unit collects voltage changes of the welding point through the resistance test unit, calculates the resistance value of the welding point and displays the resistance value through the display unit.
4. The coaxial cable connector welding and testing device according to claim 1, wherein the operation unit comprises a first switch, a second switch and a third switch, one end of the first switch, one end of the second switch and one end of the third switch are respectively connected to three control ports of the main control unit, and the other end of the first switch, the other end of the second switch and the other end of the third switch are grounded.
5. The coaxial cable joint welding and testing device of claim 2, wherein the resistance testing unit comprises a third relay, a constant current source, a voltage sampling circuit and a rectifying source, one end of the third relay is connected with the negative terminal of the welding meter pen, and the other end of the third relay is connected with the first terminal of the rectifying source; the second end of the rectifying source is connected with the positive end of the welding gauge pen after being connected with the constant current source in series; the voltage sampling circuit is connected between the first end and the second end of the rectifying source.
6. The coaxial cable joint welding and testing device of claim 1, wherein the power unit comprises a dc power source, a second relay, a power source and a power plunger, the dc power source and the power plunger being electrically connected through the second relay and the power source.
7. The coaxial cable splice welding and testing device of claim 1, wherein said display unit is comprised of four 7-bit common-negative nixie tubes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111281475.9A CN113967770A (en) | 2021-11-01 | 2021-11-01 | Coaxial cable joint welding and testing device |
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| CN202111281475.9A CN113967770A (en) | 2021-11-01 | 2021-11-01 | Coaxial cable joint welding and testing device |
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| WO2018036208A1 (en) * | 2016-08-22 | 2018-03-01 | 京信通信技术(广州)有限公司 | Welding system and welding method for metal piece and coaxial cable |
| CN206296557U (en) * | 2016-12-22 | 2017-07-04 | 广州锐镐机电科技有限公司 | A kind of coaxial fitting automatic welding machine |
| CN207965078U (en) * | 2017-09-18 | 2018-10-12 | 上海电机系统节能工程技术研究中心有限公司 | A kind of low-voltage direct resistance instrument for motor test measures protective device |
| CN212094749U (en) * | 2020-03-24 | 2020-12-08 | 国网福建省电力有限公司厦门供电公司 | Automatic tin soldering device for coaxial cable connector |
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