CN215481360U - Current control device of rectifier - Google Patents
Current control device of rectifier Download PDFInfo
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- CN215481360U CN215481360U CN202022837663.2U CN202022837663U CN215481360U CN 215481360 U CN215481360 U CN 215481360U CN 202022837663 U CN202022837663 U CN 202022837663U CN 215481360 U CN215481360 U CN 215481360U
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Abstract
The utility model discloses a current control device of a rectifier, which comprises a workpiece in-place inductor, a direct current contactor, a current detection device, a timer, an alarm device and a logic control circuit, wherein the direct current contactor is connected with the rectifier to control whether the rectifier is connected or not, the current detection device is connected with the rectifier to detect the working current of the rectifier, the timer is used for controlling the working time of the rectifier, the alarm device is used for timing to complete alarm and fault alarm, and the workpiece in-place inductor, the direct current contactor, the current detection device, the timer and the alarm device are connected together through the logic control circuit to control the working current and the working time of the rectifier. The utility model solves the problems that the output current of the rectifier is unstable and the thickness of the electroplating film layer does not meet the requirement due to the manual current cut-off.
Description
Technical Field
The present invention relates to a current control device, and more particularly, to a current control device for a rectifier.
Background
In the electroplating production process, the control of the thickness of the plating film is mainly determined by the actually applied current and the plating time. In the actual production process, because of factors such as uneven quality level of the rectifier, faults in the use process, poor contact and the like, the actual output current in the electroplating process is unstable, and the thickness of the electroplating film in the specified electroplating time is insufficient. Meanwhile, a large number of non-program automatic control commutators exist in the electroplating industry, the electroplating time control generally adopts manual watch or other timing devices, the current needs to be manually cut off after the set time is reached, the automatic cutting cannot be realized, and the quality of an electroplated layer is influenced due to the fact that an electroplated film layer is too thin or too thick caused by manual operation errors.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems in the prior art, the utility model provides a current control device of a rectifier, which can control the working time and the working current of the rectifier and solve the problems that the output current of the rectifier is unstable and the thickness of a plating film layer does not meet the requirement due to manual current cut-off.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a current control device of a rectifier comprises a workpiece in-place inductor, a direct current contactor, a current detection device, a timer and an alarm device, wherein the direct current contactor is connected with the rectifier to control whether the rectifier is connected or not, the current detection device is connected with the rectifier to detect working current of the rectifier, the timer is used for controlling working time of the rectifier, the alarm device is used for timing to complete alarm and fault alarm, and a logic control circuit is connected with the workpiece in-place inductor, the direct current contactor, the current detection device, the timer and the alarm device through the logic control circuit to control working current and working time of the rectifier.
Furthermore, the logic control circuit comprises a first relay, a second relay and a third relay, the current detection device is provided with a first switch which is automatically closed when the current is detected to accord with the current and a second switch which is automatically closed when the current is not detected to accord with the current, the timer is a time relay, the workpiece in-place inductor is connected with the direct current contactor through the first relay, and the first switch, the direct current contactor, the time relay and the alarm device are connected together through the second relay and the third relay.
Further, the first relay has a normally open contact K0, the second relay has a normally closed contact K1, a normally closed contact K2, a normally closed contact K3, a normally open contact K4 and a normally open contact K5, the time relay has a normally open contact K6, and the third relay has a normally open contact K7 and a normally open contact K8; the alarm device comprises a first alarm; a coil of the first relay and the workpiece in-place sensor are connected in series between two poles of a power supply to form a first branch circuit; the normally closed contact K1 is connected with a coil of the direct current contactor in series and is connected with a circuit formed by connecting a coil of the second relay and the normally open contact K6 in series in parallel to form a parallel circuit, and the parallel circuit is connected with the normally open contact K0 in series to form a second branch circuit; the normally open contact K2 is connected with the normally open contact K6 in parallel; the first switch, the normally closed contact K3 and a coil of the time relay are connected in series to form a third branch; a normally open contact K7 is connected with the first switch in parallel, and a coil of the third relay is connected with a coil of the time relay in parallel; the first alarm is connected with a normally open contact K4 in series to form a fourth branch; the second switch, the normally closed contact K5 and the normally open contact K8 are connected together in series and are connected with the normally open contact K4 in parallel; the first branch circuit, the second branch circuit, the third branch circuit and the fourth branch circuit are connected in parallel.
Furthermore, the alarm device further comprises a second alarm, and the second alarm is connected with the coil of the second relay in parallel.
Furthermore, the alarm device further comprises a third alarm, the third relay further comprises a normally open contact K9, the third alarm, the normally open contact K9, the normally closed contact K5 and the second switch are connected in series to form a fifth branch, and the fifth branch is connected with the first branch in parallel.
Furthermore, the first alarm is a buzzer, and the second alarm is a first indicator light.
Further, the first alarm is a buzzer, and the third alarm is a second indicator light.
Furthermore, the device also comprises a reset switch which is connected in series on the third branch.
Further, the current detection device comprises a current sensor and an ammeter which are connected in parallel; the workpiece in-place sensor is a photoelectric sensor.
Further, the direct current contactor, the current detection device, the timer, the logic control circuit and the alarm device are integrated in the box body.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model comprises the workpiece in-place inductor, the direct current contactor, the current detection device, the timer, the logic control circuit and the alarm device, and can be used for switching on the rectifier when a workpiece is detected, starting timing when working current meeting requirements is detected, starting an alarm and switching off the rectifier after timing time is up, and starting an alarm when faults occur (including power failure of the rectifier in the timing process and non-compliance of the working current). Therefore, the utility model can control the working time and the working current of the rectifier, and solve the problems that the output current of the rectifier is unstable and the thickness of the electroplating film layer does not meet the requirement due to manual current cut-off.
2. The logic control circuit comprises the first relay, the second relay and the third relay, so that the logic control circuit is low in cost and easy to maintain.
3. The alarm device comprises a first alarm and further comprises a second alarm and/or a third alarm, so that the alarm after timing is finished and the fault alarm can be distinguished easily.
4. The current detection device is preferably an ammeter connected with a shunt in parallel, and can display the operating current of the rectifier and set a current threshold value by using the ammeter.
5. The direct current contactor, the current detection device, the timer, the logic control circuit and the alarm device are integrated in the box body, so that the direct current contactor, the current detection device, the timer, the logic control circuit and the alarm device are compact and concise in overall structure and convenient to use.
The utility model is further explained in detail with the accompanying drawings and the embodiments; a rectifier current control device of the present invention is not limited to the embodiment.
Drawings
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a schematic diagram of the circuit configuration of the present invention;
FIG. 3 is a schematic circuit diagram of the current detecting device of the present invention;
fig. 4 is a schematic view of the overall structure of the present invention.
Detailed Description
In an embodiment, please refer to fig. 1-4, a rectifier current control device of the present invention includes a workpiece in-place sensor, a dc contactor 1 connected to a rectifier 7 for controlling the connection of the rectifier 7, a current detection device 2 connected to the rectifier 7 for detecting the operating current of the rectifier 7, a timer for controlling the operating time of the rectifier 7, an alarm device 4 for timing completion alarm and fault alarm, and a logic control circuit 6, wherein the workpiece in-place sensor, the dc contactor 1, the current detection device 2, the timer, and the alarm device 4 are connected together through the logic control circuit 6 for controlling the operating current and the operating time of the rectifier 7. The workpiece in-place sensor is specifically a photoelectric sensor 3, and the timer is specifically a time relay 5.
In this embodiment, the logic control circuit 6 includes a first relay, a second relay, and a third relay, the current detection device 2 has a first switch a1 that is automatically closed when a coincidence current is detected and a second switch a2 that is automatically closed when a coincidence current is not detected, the photosensor 3 is connected to the dc contactor 1 through the first relay, and the first switch a1, the dc contactor 1, the time relay 5, and the alarm device 4 are connected together through the second relay and the third relay. In other embodiments, the logic control circuit 6 is implemented by a logic chip.
In the present embodiment, as shown in fig. 2, the first relay has a normally open contact K0, the second relay has a normally closed contact K1, a normally closed contact K2, a normally closed contact K3, a normally open contact K4, and a normally open contact K5, the time relay 5 has a normally open contact K6, and the third relay has a normally open contact K7 and a normally open contact K8; the alarm device 4 comprises a first alarm; the coil R0 of the first relay and the photoelectric sensor 3 are connected in series between two poles of a power supply (the power supply is a 24V direct current power supply and is provided from the outside) to form a first branch circuit; the normally closed contact K1 is connected with a coil R1 of the direct current contactor 1 in series, and is connected with a circuit formed by connecting a coil R2 of a second relay with a normally open contact K6 in series to form a parallel circuit, and the parallel circuit is connected with the normally open contact K0 in series to form a second branch circuit; the normally open contact K2 is connected with the normally open contact K6 in parallel; the first switch A1, the normally closed contact K3 and the coil T of the time relay 5 are connected in series to form a third branch; a normally open contact K7 is connected in parallel with the first switch A1, and a coil of a third relay is connected in parallel with a coil T of the time relay 5; the first alarm is connected with a normally open contact K4 in series to form a fourth branch; the second switch A2, the normally closed contact K5 and the normally open contact K8 are connected together in series and are connected with the normally open contact K4 in parallel; the first branch circuit, the second branch circuit, the third branch circuit and the fourth branch circuit are connected in parallel.
In this embodiment, the alarm device 4 further includes a second alarm device connected in parallel to the coil R2 of the second relay. The alarm device 4 further comprises a third alarm, the third relay is further provided with a normally open contact K9, the third alarm, the normally open contact K9, the normally closed contact K5 and the second switch A2 are connected in series to form a fifth branch, and the fifth branch is connected with the first branch in parallel. The first alarm is buzzer ALM, the second alarm is first pilot lamp L1, the third alarm is second pilot lamp L2, and first pilot lamp L1 is green pilot lamp, and second pilot lamp L2 is red pilot lamp.
In this embodiment, the present invention further includes a reset switch K10, and the reset switch is connected in series to the third branch. This reset switch K10 is the normal close formula, and this reset switch K10 is used for time relay 5 parameter setting, perhaps, is used for manual reset time relay 5.
In this embodiment, as shown in fig. 3, the current detection device 2 includes a current sensor and an ammeter a, which are connected in parallel, and the current sensor is specifically, but not limited to, a shunt B; current meter A has the first switch A1 and second switch A2.
In this embodiment, as shown in fig. 4, the present invention further includes a box 8, the dc contactor 1, the current detection device 2, the timer, the logic control circuit 6 and the alarm device 4 are integrated in the box 8, and the first indicator light L1, the second indicator light L2, the time relay 5, the ammeter a and the buzzer ALM are visible outside the box 8. The box 8 is externally provided with a plurality of wiring ports 9 so as to be convenient for connecting the rectifier 7, the power supply and the like.
When the rectifier current control device is applied, the normally open contact of the direct current contactor 1 is connected in series to the external circuit of the rectifier 7, and the shunt B is connected in series to the external circuit of the rectifier 7. During operation, after the photoelectric sensor 3 detects that the workpiece is in place, the first branch circuit is connected, so that the coil R0 of the first relay is electrified, the normally open contact K0 of the first relay is closed, the coil R1 of the direct current contactor 1 is electrified, and the direct current contactor 1 is connected with the rectifier 7. When the current detection device 2 detects that the working current of the rectifier 7 meets the requirements (reaches a preset value), the first switch A1 is closed, the coil T of the time relay 5 is electrified, the time relay 5 starts timing, meanwhile, the coil R3 of the third relay is electrified, the normally open contacts K7, K8 and K9 of the third relay are closed, and the third branch circuit is enabled to form self-locking. When time of time relay 5 arrived, time relay 5's normally open contact K6 is closed, make the coil R2 of second relay get electric, the normally closed contact K1 of second relay, normally closed contact K2, normally closed contact K3 disconnection, normally open contact K4 and normally open contact K5 are closed, thereby make direct current contactor 1's coil R1 outage, direct current contactor 1 breaks off the outside return circuit of rectifier 7, thereby cut off current output, first pilot lamp L1 lights simultaneously, buzzer ALM reports to the police, remind staff rectifier 7's operating time to arrive. When the external circuit of the rectifier 7 is powered off or the current detection device 2 detects that the working current of the rectifier 7 is not qualified (lower than a set value) in the timing process, the first switch A1 is switched off, the second switch A2 is switched on, and as the coil R3 of the third relay is powered on when the relay is put into practice to start timing, the normally open contacts K7, K8 and K9 of the third relay are in a closed state, therefore, the second indicator light L2 lights, and the buzzer ALM gives an alarm. After the fault of the working personnel is eliminated, the current detection device 2 detects that the current meets the requirement, the time relay 5 continues to count time until the counted time is reached, the direct current contactor 1 disconnects an external loop of the rectifier 7, meanwhile, the first indicator light L1 is turned on, and the buzzer ALM gives an alarm.
Therefore, the utility model can automatically cut off the current output after the working time of the rectifier is up, and remind the operator to eliminate the fault when the current output does not meet the requirement in the electroplating operation production process, thereby solving the problems that the output current of the rectifier is unstable and the thickness of the electroplating film layer does not meet the requirement due to the adoption of the operator to cut off the current.
The above embodiments are only used to further illustrate the current control device of the rectifier of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. A rectifier current control apparatus characterized in that: the automatic control system comprises a workpiece in-place inductor, a direct current contactor, a current detection device, a timer, an alarm device and a logic control circuit, wherein the direct current contactor is connected with a rectifier to control the connection of the rectifier, the current detection device is connected with the rectifier to detect the working current of the rectifier, the timer is used for controlling the working time of the rectifier, the alarm device is used for timing to complete alarm and fault alarm, and the logic control circuit is connected with the workpiece in-place inductor, the direct current contactor, the current detection device, the timer and the alarm device through the logic control circuit to control the working current and the working time of the rectifier;
the logic control circuit comprises a first relay, a second relay and a third relay, the current detection device is provided with a first switch which is automatically closed when the current detection device detects the coincidence current and a second switch which is automatically closed when the current detection device does not detect the coincidence current, the timer is a time relay, the workpiece in-place inductor is connected with the direct current contactor through the first relay, and the first switch, the direct current contactor, the time relay and the alarm device are connected together through the second relay and the third relay.
2. The rectifier current control device according to claim 1, wherein: the alarm device comprises a first alarm; and a coil of the first relay and the workpiece in-place sensor are connected in series between two poles of a power supply to form a first branch.
3. The rectifier current control device according to claim 2, wherein: the alarm device further comprises a second alarm, and the second alarm is connected with the coil of the second relay in parallel.
4. The rectifier current control device according to claim 2, wherein: the alarm device also comprises a third alarm.
5. The rectifier current control device according to claim 3, wherein: the first alarm is a buzzer, and the second alarm is a first indicator light.
6. The rectifier current control device according to claim 4, wherein: the first alarm is a buzzer, and the third alarm is a second indicator light.
7. The rectifier current control device according to claim 2, wherein: a reset switch is also included.
8. The rectifier current control device according to claim 1, wherein: the current detection device comprises a current sensor and an ammeter which are connected in parallel; the workpiece in-place sensor is a photoelectric sensor.
9. The rectifier current control device according to claim 1, wherein: the direct current contactor, the current detection device, the timer, the logic control circuit and the alarm device are integrated in the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022837663.2U CN215481360U (en) | 2020-11-30 | 2020-11-30 | Current control device of rectifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022837663.2U CN215481360U (en) | 2020-11-30 | 2020-11-30 | Current control device of rectifier |
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| Publication Number | Publication Date |
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| CN215481360U true CN215481360U (en) | 2022-01-11 |
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| CN202022837663.2U Active CN215481360U (en) | 2020-11-30 | 2020-11-30 | Current control device of rectifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117568907A (en) * | 2023-11-10 | 2024-02-20 | 天水华洋电子科技股份有限公司 | Novel electroplating process of nickel-palladium-gold lead frame |
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2020
- 2020-11-30 CN CN202022837663.2U patent/CN215481360U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117568907A (en) * | 2023-11-10 | 2024-02-20 | 天水华洋电子科技股份有限公司 | Novel electroplating process of nickel-palladium-gold lead frame |
| CN117568907B (en) * | 2023-11-10 | 2024-05-17 | 天水华洋电子科技股份有限公司 | Electroplating process of nickel-palladium-gold lead frame |
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