CN201616799U - Brake circuit of button-sewing machine - Google Patents
Brake circuit of button-sewing machine Download PDFInfo
- Publication number
- CN201616799U CN201616799U CN2010201221795U CN201020122179U CN201616799U CN 201616799 U CN201616799 U CN 201616799U CN 2010201221795 U CN2010201221795 U CN 2010201221795U CN 201020122179 U CN201020122179 U CN 201020122179U CN 201616799 U CN201616799 U CN 201616799U
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- China
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- triode
- motor power
- button
- brake circuit
- sewing machine
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- Expired - Fee Related
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- Sewing Machines And Sewing (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The utility model discloses a brake circuit of a button-sewing machine, comprising a triode and a silicon controlled rectifier; a collector of the triode D1 is connected with a triggering end of the silicon controlled rectifier VS2; two ends of the silicon controlled rectifier VS2 are connected with the terminal A and terminal B of a motor power supply; a base of the triode D1 is connected with a resistor R19 and the terminal B of the motor power supply; the base of the triode D1 is connected with a resistor R18 and the terminal A of the motor power supply; the collector of the triode D1 is connected with a resistor R20 and the terminal A of the motor power supply; and an emitter of the triode D1 is connected with the terminal B of the motor power supply. The brake circuit has the benefits of greatly reducing the burning possibility of the silicon controlled rectifier when braking by adding the triode, reinforcing the interference resistance of the circuit by adding a filter capacitor and a photoelectric coupler, leading the current to exist at two ends of the motor when braking by adding the current-limiting resistors; and the aim of braking is achieved as the current is short circuit and released when passing by the current-limiting resistor and the motor stops rotating.
Description
Technical field
The utility model relates to the brake circuit, more specifically says, it relates to a kind of button-sewing machine brake circuit.
Background technology
The button-sewing machine brake circuit of prior art directly carries out short circuit control by single-chip microcomputer and bidirectional triode thyristor, because motor and relay interference performance are all very big, controllable silicon, the main fuse that to control brake easily in brake burn, and controllable silicon may lose efficacy under external interference or unexpected conducting causes the accident.And the driving optocoupler of motor has stopped coupling, stop to the motor power supply, but still there is electric current in the motor two ends, and direct short-circuit also causes device failure easily.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of anti-interference, good stability, the button-sewing machine brake circuit of function admirable.
The purpose of this utility model is achieved through the following technical solutions.This button-sewing machine brake circuit comprises triode and controllable silicon, and the collector electrode of triode D1 is connected with controllable silicon VS2 trigger end, and controllable silicon VS2 two ends link to each other with A end, the B end of motor power respectively; Triode D1 base stage connects the B end of resistance R 19 to motor power, and triode D1 base stage connects the A end of resistance R 18 to motor power; Triode D1 collector electrode connects the A end of resistance R 20 to motor power; Triode D1 emitter is connected to the B end of motor power.
As preferably: triode D1 base stage connects the B end of capacitor C 16 to motor power.
As preferably: triode D1 collector electrode connects the B end of resistance R 26 to motor power, and triode D1 collector electrode connects the B end of capacitor C 17 to motor power.
As preferably: be connected with photoelectrical coupler OP4 between triode D1 emitter and the base stage.
As preferably: also be in series with current-limiting resistance R0 on the described controllable silicon VS2.
As preferably: also be in series with capacitor C 15 and resistance R 22 between the described motor power side a and b.
As preferably: be connected with protection diode D5 between the described motor power side a and b.
The beneficial effects of the utility model are: use triode by increasing, the probability that controllable silicon burns out when greatly reducing brake; By increasing filter capacitor and photoelectrical coupler, the anti-interference of intensifier circuit; By increasing current-limiting resistance, still there is electric current in the motor two ends when brake, and electric current discharges by the current-limiting resistance short circuit, and motor stops operating, and reaches the purpose of brake.
Description of drawings
Fig. 1 is the utility model brake circuit theory diagrams;
Fig. 2 is a button-sewing machine control circuit schematic diagram.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.Though the utility model will be described in conjunction with preferred embodiment, should know, do not represent that the utility model is limited among the described embodiment.On the contrary, the utility model will be contained alternative, modified model and the equivalent in the scope of the present utility model that can be included in attached claims qualification.
Referring to shown in Figure 1, the button-sewing machine brake circuit of introducing here generally is used for the button-sewing machine brake, yet should know that the utility model also can be used for the brake circuit of miscellaneous equipment etc.This button-sewing machine brake circuit comprises triode and controllable silicon, wherein the collector electrode of triode D1 is connected with controllable silicon VS2 trigger end, controllable silicon VS2 is in series with current-limiting resistance R0, its two ends link to each other with A end, the B end of motor power respectively, triode D1 base stage connects the B end of resistance R 19 to motor power, triode D1 base stage connects the A end of resistance R 18 to motor power, and triode D1 emitter is connected to the B end of motor power.Triode D1 base stage connects the B end of capacitor C 16 to motor power, triode D1 collector electrode connects the A end of resistance R 20 to motor power, triode D1 collector electrode connects the B end of resistance R 26 to motor power, and triode D1 collector electrode connects the B end of capacitor C 17 to motor power.Be connected with photoelectrical coupler OP4 between triode D1 emitter and the base stage.Also be in series with capacitor C 15 and resistance R 22 between the described motor power side a and b, be connected with protection diode D5 between the motor power side a and b.
As shown in Figure 2, the button-sewing machine control circuit is by the triggering of ancillary equipment to MCU, makes the IO mouth of MCU correspondence make corresponding high-low level and changes the peripheral cell work that drives.The main drive part circuit of motor utilizes the corresponding IO mouth of MCU level to change, make the photoelectrical coupler coupling, we abbreviate the driving optocoupler as the optocoupler here, and the optocoupler in the brake circuit abbreviates the brake optocoupler as, bidirectional triode thyristor is triggered by trigger tube in the coupling back, causes the corresponding pin conducting of controllable silicon.After the controllable silicon conducting alternating current 220V is introduced rectifier bridge, be made into direct current and after filtering, power to direct current machine.Direct current after the above-mentioned rectification also is powered at the brake circuit except that being powered at motor.
Whether the brake circuit also is to change to control by the corresponding IO mouth of MCU level will brake, and says the working method of taking off the brake circuit now in detail.Present technique is to realize the brake of direct current machine by short-circuit method.After MCU makes the coupling of driving optocoupler, the corresponding pin conducting of bidirectional triode thyristor, motor rotates.This moment, MCU did not make the coupling of brake optocoupler, and triode C2482 is in running order, and the level on the one-way SCR trigger electrode is dragged down, controllable silicon is not worked, corresponding not conducting of pin, the big resistance of the current limliting that connects on A1, the A2 is in off-state, motor is not carried out short circuit.When the peripheral mechanical part by driven by motor forwarded a certain position (position is determined by sensing element) to, sensing element was given signal of MCU, and the IO mouth level of MCU correspondence is changed, and at this moment, drove optocoupler and stopped coupling, the coupling of brake optocoupler.Because of the coupling of brake optocoupler, transistor base voltage is dragged down and it is quit work, and collector voltage is drawn high.The controllable silicon trigger electrode links to each other with transistor collector, and the controllable silicon trigger electrode is drawn high, corresponding pin conducting.The big resistance of current limliting is connected on the dc motor power two ends by one-way SCR.Stopped coupling because of driving optocoupler, equaling is exactly to stop to the motor power supply, but still there is electric current in the motor two ends, and this electric current discharges by the big resistive short of current limliting that is connected in the motor two ends, and motor stops operating, and reaches the purpose of brake.
Because extraneous factor is numerous, causes controllable silicon to receive interference easily.This design will reduce the unnecessary loss because of controllable silicon lost efficacy or unexpected conducting causes greatly under external interference.
Claims (7)
1. a button-sewing machine brake circuit comprises triode and controllable silicon, and it is characterized in that: the collector electrode of triode D1 is connected with controllable silicon VS2 trigger end, and controllable silicon VS2 two ends link to each other with A end, the B end of motor power respectively; Triode D1 base stage connects the B end of resistance R 19 to motor power, and triode D1 base stage connects the A end of resistance R 18 to motor power; Triode D1 collector electrode connects the A end of resistance R 20 to motor power; Triode D1 emitter is connected to the B end of motor power.
2. button-sewing machine brake circuit according to claim 1 is characterized in that: triode D1 base stage connects the B end of capacitor C 16 to motor power.
3. button-sewing machine brake circuit according to claim 1 is characterized in that: triode D1 collector electrode connects the B end of resistance R 26 to motor power, and triode D1 collector electrode connects the B end of capacitor C 17 to motor power.
4. button-sewing machine brake circuit according to claim 1 is characterized in that: be connected with photoelectrical coupler OP4 between triode D1 emitter and the base stage.
5. button-sewing machine brake circuit according to claim 1 is characterized in that: also be in series with current-limiting resistance R0 on the described controllable silicon VS2.
6. button-sewing machine brake circuit according to claim 1 is characterized in that: also be in series with capacitor C 15 and resistance R 22 between the described motor power side a and b.
7. button-sewing machine brake circuit according to claim 1 is characterized in that: be connected with protection diode D5 between the described motor power side a and b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201221795U CN201616799U (en) | 2010-03-02 | 2010-03-02 | Brake circuit of button-sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201221795U CN201616799U (en) | 2010-03-02 | 2010-03-02 | Brake circuit of button-sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616799U true CN201616799U (en) | 2010-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201221795U Expired - Fee Related CN201616799U (en) | 2010-03-02 | 2010-03-02 | Brake circuit of button-sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616799U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553340A (en) * | 2016-01-27 | 2016-05-04 | 上海广为焊接设备有限公司 | Motor brake circuit used for controllable silicon drive |
| CN105610349A (en) * | 2016-01-14 | 2016-05-25 | 苏州成科自控设备有限公司 | Rapid actuator brake device |
-
2010
- 2010-03-02 CN CN2010201221795U patent/CN201616799U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610349A (en) * | 2016-01-14 | 2016-05-25 | 苏州成科自控设备有限公司 | Rapid actuator brake device |
| CN105553340A (en) * | 2016-01-27 | 2016-05-04 | 上海广为焊接设备有限公司 | Motor brake circuit used for controllable silicon drive |
| CN105553340B (en) * | 2016-01-27 | 2018-05-18 | 上海广为焊接设备有限公司 | A kind of motor brake circuit for silicon-controlled driving |
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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: 20101027 Termination date: 20130302 |