CN201020579Y - Molybdenum wire break braking device for linear cutting machine - Google Patents
Molybdenum wire break braking device for linear cutting machine Download PDFInfo
- Publication number
- CN201020579Y CN201020579Y CNU2007201087972U CN200720108797U CN201020579Y CN 201020579 Y CN201020579 Y CN 201020579Y CN U2007201087972 U CNU2007201087972 U CN U2007201087972U CN 200720108797 U CN200720108797 U CN 200720108797U CN 201020579 Y CN201020579 Y CN 201020579Y
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- CN
- China
- Prior art keywords
- motor
- molybdenum wire
- circuit
- wire
- cutting machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A braking device that can be activated by the breakage molybdenum wire of linear cutting machines, which relates to a motor braking device, characterized in that: the utility model is provided with a detecting circuit for breakage molybdenum wire of linear cutting machines; the detecting circuit consists of a current transformer and a Darlington amplifier circuit; one phase line of the motor AC supply passes through the primary coil of the current transformer; the secondary coil of the current transformer is connected with, one by one, a voltage regulator and rectifier circuit and the Darlington amplifier circuit; the output end of the Darlington amplifier circuit is connected with the input end of an SCM; the output end of the SCM is connected with the motor braking circuit consisting of a switch tube and a relay; the normally open contact of the relay is connected in series with the phase lines of a group of DC supply and a group of motor AC supply. By providing a detecting circuit for the breakage molybdenum wire to detect the operation current of molybdenum wire motor, the utility model can activate the braking circuit of the molybdenum wire motor when the molybdenum wire is broken to quickly brake the motor and protect the molybdenum wire. The utility model can be applied to various kinds of linear cutting machines.
Description
Technical field
The utility model relates to a kind of dynamic braking device, the dynamic braking device during particularly a kind of wire cutting machine tool molybdenum filament fracture of wire.
Background technology
Detection when the prior art wire cutting machine tool does not have the molybdenum filament fracture of wire and dynamic braking device.When causing the molybdenum filament fracture of wire, the continuation high speed rotating of motor causes a large amount of wastes of molybdenum filament.
Summary of the invention
The purpose of this utility model provides a kind of wire cutting machine tool molybdenum filament fracture of wire brake apparatus.
The technical scheme that its technical problem that solves the utility model adopts is: this device comprises motor braking circuits: its architectural feature is to have wire cutting machine tool molybdenum filament fracture of wire testing circuit, wire cutting machine tool molybdenum filament fracture of wire testing circuit is made up of current transformer and darlington amplifying circuit, a phase line of AC power of motor is passed the current transformer primary coil, the current transformer secondary coil is connected with regulator rectifier circuit, regulator rectifier circuit is connected with darlington amplifying circuit, the darlington amplifying circuit output is connected with the single-chip microcomputer input, the single-chip microcomputer output is connected with motor braking circuits, motor braking circuits comprises switching tube and relay, and relay normally open contact is connected in series mutually with the phase line of one group of dc source and one group of AC power of motor.
The beneficial effects of the utility model are by the detection of the disconnected testing circuit of molybdenum filament to molybdenum filament operation motor operating current, when the molybdenum filament fracture of wire, can start molybdenum filament operation motor braking circuits in real time, the rotation of fast braking motor, and the protection molybdenum filament is unaffected.The utility model can be applicable to all kinds of wire cutting machine tools.
Description of drawings
The utility model is described in further detail below by accompanying drawing.
Accompanying drawing 1 is an electrical schematic diagram of the present utility model.
The specific embodiment
Consult Fig. 1.Single-chip microcomputer is the PIC16C54 8-bit microcontroller of U.S. Microchip company among the figure.
The disconnected testing circuit of wire cutting machine tool molybdenum filament is by current transformer LT and darlington amplifying circuit G1, G2 forms, arbitrary phase line of AC power of motor passed current transformer LT primary coil, current transformer LT secondary coil is connected with regulator rectifier circuit, regulator rectifier circuit and darlington amplifying circuit G1, the G2 input is connected, darlington amplifying circuit G1, the G2 output is connected with single-chip microcomputer PIC16C54 input I/O (1), single-chip microcomputer PIC16C54 output I/O (2) is connected with the motor D braking circuit, motor braking circuits comprises switching tube G3 and relay J, and the relay J normally opened contact is connected in series mutually with any one group of phase line of the communication power supply of one group of dc source (+) and one group of motor D.
The running current of wire cutting machine tool molybdenum filament operation motor when normally moving with the molybdenum filament fracture of wire is different, the wire cutting machine tool testing circuit is by the detection to molybdenum filament operation motor operating current, when the molybdenum filament fracture of wire, start molybdenum filament operation motor braking circuits, the rotation of fast braking motor in real time by the monolithic function.
Claims (1)
1. a wire cutting machine tool molybdenum filament fracture of wire brake apparatus comprises motor braking circuits; It is characterized in that having wire cutting machine tool molybdenum filament fracture of wire testing circuit, wire cutting machine tool molybdenum filament fracture of wire testing circuit is made up of current transformer and darlington amplifying circuit, a phase line of AC power of motor is passed the current transformer primary coil, the current transformer secondary coil is connected with regulator rectifier circuit, regulator rectifier circuit is connected with darlington amplifying circuit, the darlington amplifying circuit output is connected with the single-chip microcomputer input, the single-chip microcomputer output is connected with motor braking circuits, motor braking circuits comprises switching tube and relay, and relay normally open contact is connected in series mutually with the phase line of one group of dc source and one group of AC power of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201087972U CN201020579Y (en) | 2007-04-30 | 2007-04-30 | Molybdenum wire break braking device for linear cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201087972U CN201020579Y (en) | 2007-04-30 | 2007-04-30 | Molybdenum wire break braking device for linear cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201020579Y true CN201020579Y (en) | 2008-02-13 |
Family
ID=39087986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201087972U Expired - Fee Related CN201020579Y (en) | 2007-04-30 | 2007-04-30 | Molybdenum wire break braking device for linear cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201020579Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850486A (en) * | 2019-12-02 | 2020-02-28 | 常州机电职业技术学院 | Broken wire detection circuit of copper wire bundle wire machine |
-
2007
- 2007-04-30 CN CNU2007201087972U patent/CN201020579Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850486A (en) * | 2019-12-02 | 2020-02-28 | 常州机电职业技术学院 | Broken wire detection circuit of copper wire bundle wire machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080213 |