CN201223982Y - Molybdenum wire breakage braking device of linear cutting machine - Google Patents
Molybdenum wire breakage braking device of linear cutting machine Download PDFInfo
- Publication number
- CN201223982Y CN201223982Y CNU2008201214402U CN200820121440U CN201223982Y CN 201223982 Y CN201223982 Y CN 201223982Y CN U2008201214402 U CNU2008201214402 U CN U2008201214402U CN 200820121440 U CN200820121440 U CN 200820121440U CN 201223982 Y CN201223982 Y CN 201223982Y
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- CN
- China
- Prior art keywords
- motor
- relay
- circuit
- cutting machine
- molybdenum wire
- 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.)
- Expired - Fee Related
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Abstract
A linear cutting machine broken molybdenum wire brake device comprises a motor brake circuit and is characterized in that a linear cutting machine broken molybdenum wire detection circuit comprises a current transformer, an operational amplifier circuit and a relay; one phase line of a motor AC power supply is threaded through the current transformer; the current transformer is connected with a rectification voltage regulator circuit; the rectification voltage regulator circuit is connected with the operational amplifier circuit; the output end of the operational amplifier circuit is connected with the coil of the relay; one end of the normally open contact of the relay is connected with the anode of the power supply, while the other end is connected with the input end of a single chip; the output end of the single chip is connected with the motor brake circuit; the motor brake circuit comprises a switch tube and the relay; and the normally open contact of the relay is connected with the phase lines of a group of DC power supplies and a group of motor AC power supplies in series. The broken molybdenum wire brake device has the advantages that the running current of a molybdenum wire running motor is detected through the broken molybdenum wire detection circuit; when the molybdenum wires are broken, the brake device can start up the molybdenum wire running motor brake circuit in a real-time manner to rapidly brake the rotation of the motor so as to protect the molybdenum wires from impact.
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; 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 by current transformer, discharge circuit and relay are formed, a phase line of AC power of motor is passed current transformer, current transformer is connected with regulator rectifier circuit, regulator rectifier circuit is connected with discharge circuit, the discharge circuit output is connected with relay coil, one end of relay normally open contact is connected with positive source, the other end 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 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, discharge circuit LM358 and relay J 1 are formed, 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 discharge circuit LM358 input, discharge circuit LM358 output is connected with relay J 1 coil, one end of relay J 1 normally opened contact is connected with positive source (+), the other end 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 G and relay J 2, and relay J 2 normally opened contacts are 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 kind of wire cutting machine tool molybdenum filament fracture of wire brake apparatus comprises motor braking circuits; It is characterized in that wire cutting machine tool molybdenum filament fracture of wire testing circuit is by current transformer, discharge circuit and relay are formed, a phase line of AC power of motor is passed current transformer, current transformer is connected with regulator rectifier circuit, regulator rectifier circuit is connected with discharge circuit, the discharge circuit output is connected with relay coil, one end of relay normally open contact is connected with positive source, the other end 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 |
|---|---|---|---|
| CNU2008201214402U CN201223982Y (en) | 2008-07-11 | 2008-07-11 | Molybdenum wire breakage braking device of linear cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201214402U CN201223982Y (en) | 2008-07-11 | 2008-07-11 | Molybdenum wire breakage braking device of linear cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201223982Y true CN201223982Y (en) | 2009-04-22 |
Family
ID=40596860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201214402U Expired - Fee Related CN201223982Y (en) | 2008-07-11 | 2008-07-11 | Molybdenum wire breakage braking device of linear cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201223982Y (en) |
-
2008
- 2008-07-11 CN CNU2008201214402U patent/CN201223982Y/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: 20090422 |