CN201217115Y - Molybdenum-wire wire-breakage braking device of linear cutting machine with alarm device - Google Patents
Molybdenum-wire wire-breakage braking device of linear cutting machine with alarm device Download PDFInfo
- Publication number
- CN201217115Y CN201217115Y CNU2008201214510U CN200820121451U CN201217115Y CN 201217115 Y CN201217115 Y CN 201217115Y CN U2008201214510 U CNU2008201214510 U CN U2008201214510U CN 200820121451 U CN200820121451 U CN 200820121451U CN 201217115 Y CN201217115 Y CN 201217115Y
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- China
- Prior art keywords
- circuit
- motor
- wire
- braking device
- molybdenum wire
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- 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.)
- Expired - Fee Related
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Abstract
Disclosed is a linear cutting machine molybdenum wire breaking braking device which is provided with an alarm device and comprises a motor braking circuit. The braking device is characterized in that a molybdenum wire breaking detection circuit comprises a current transformator and a Darlington switch circuit and is connected with an input terminal of a singlechip. One phase line of an AC power source threads through the current transformator which is connected with a rectifying and voltage stabilizing circuit. The rectifying and voltage stabilizing circuit is connected with the Darlington switch circuit which is connected with an input terminal of the singlechip. The output terminals of the singlechip are respectively connected with an alarm circuit and the motor braking circuit. The alarm circuit includes a switch tube and a buzzer. The motor braking circuit comprises 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 power sources and a group of DC power sources of the motor. The braking device has the advantages that: by detecting the currents of the operation of the molybdenum wire and the operation of the motor, the braking device quickly stops the rotation of the motor when the molybdenum wire breaks, thus protecting the molybdenum wire from being influenced. When the molybdenum wire breaks, the braking device gives an alarm signal, which is good for self-service management.
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 that has warning device.
The technical scheme that its technical problem that solves the utility model adopts is: comprise motor braking circuits; It is characterized in that molybdenum filament fracture of wire testing circuit is by current transformer, the Darlington on-off circuit is formed, be connected with the single-chip microcomputer input, a phase line of AC power is passed current transformer, current transformer is connected with regulator rectifier circuit, regulator rectifier circuit is connected with the Darlington on-off circuit, the Darlington on-off circuit is connected with the single-chip microcomputer input, the single-chip microcomputer output is connected with motor braking circuits with warning circuit respectively, warning circuit comprises switching tube and buzzer, 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.At the molybdenum filament fracture of wire time, send alarm signal, help unattended.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 PIC12C508 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, Darlington on-off circuit G1 forms, arbitrary phase line of AC power of motor passed current transformer LT, current transformer LT is connected with regulator rectifier circuit, regulator rectifier circuit is connected with Darlington on-off circuit G1 input, switching tube G1 output is connected with single-chip microcomputer PIC12C508 input I/O (1), single-chip microcomputer PIC12C508 output I/O (2) is connected with the motor D braking circuit, motor braking circuits comprises switching tube G2 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.Single-chip microcomputer output I/O (3) is connected with warning circuit, and warning circuit comprises switching tube G3 and buzzer SP.
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 in real time by the monolithic function, the rotation of fast braking motor is also sent alarm signal.
Claims (1)
1, a kind of wire cutting machine tool molybdenum filament fracture of wire brake apparatus that has warning device comprises motor braking circuits; It is characterized in that molybdenum filament fracture of wire testing circuit is by current transformer, the Darlington on-off circuit is formed, be connected with the single-chip microcomputer input, a phase line of AC power is passed current transformer, current transformer is connected with regulator rectifier circuit, regulator rectifier circuit is connected with the Darlington on-off circuit, the Darlington on-off circuit is connected with the single-chip microcomputer input, the single-chip microcomputer output is connected with motor braking circuits with warning circuit respectively, warning circuit comprises switching tube and buzzer, 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 |
|---|---|---|---|
| CNU2008201214510U CN201217115Y (en) | 2008-07-11 | 2008-07-11 | Molybdenum-wire wire-breakage braking device of linear cutting machine with alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201214510U CN201217115Y (en) | 2008-07-11 | 2008-07-11 | Molybdenum-wire wire-breakage braking device of linear cutting machine with alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201217115Y true CN201217115Y (en) | 2009-04-08 |
Family
ID=40539951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201214510U Expired - Fee Related CN201217115Y (en) | 2008-07-11 | 2008-07-11 | Molybdenum-wire wire-breakage braking device of linear cutting machine with alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201217115Y (en) |
-
2008
- 2008-07-11 CN CNU2008201214510U patent/CN201217115Y/en not_active Expired - Fee Related
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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: 20090408 |