CN202330617U - Testing device for preventing inversion of diodes - Google Patents
Testing device for preventing inversion of diodes Download PDFInfo
- Publication number
- CN202330617U CN202330617U CN201120517563XU CN201120517563U CN202330617U CN 202330617 U CN202330617 U CN 202330617U CN 201120517563X U CN201120517563X U CN 201120517563XU CN 201120517563 U CN201120517563 U CN 201120517563U CN 202330617 U CN202330617 U CN 202330617U
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Abstract
The utility model discloses a testing device for preventing inversion of diodes. The testing device comprises a first testing end and a second testing end, wherein a diode to be tested is overlapped between the first testing end and the second testing end. The testing device is characterized by also comprising a relay, an alarm and a reset switch, wherein the relay is provided with a normally-open switch, a first normally-closed switch and a second normally-closed switch; one end of the normally-open switch is connected with the anode of a power supply and the first testing end, and the other end of the normally-open switch is connected with the input end of the relay and the second testing end; and the output end of the relay is connected with one end of the alarm, and the other end of the alarm is connected with the reset switch in series and then is connected with the cathode of the power supply. The testing device has the beneficial effects of being simple in circuit structure and being convenient to implement, capable of testing inverse materials on a production line automatically so as to prevent the inverted diodes from flowing into finished products, being not high in requirement on positioning of elements in testing, effectively improving product quality, and boosting reliability of the product quality.
Description
Technical field
The utility model relates to a kind of proving installation, specifically, is a kind of proving installation that is used to prevent diode reverse.
Background technology
In the diode production process, often need confirm the positive-negative polarity of diode.In case occur the backward dioded pipe in the finished product, not only influence the image of manufacturer, and might cause major safety risks, even jeopardize life safety.
And on production line, often earlier through polarity test, be emitted on according to the order of sequence on the connecting gear according to certain polarity then, send into successively in the per pass operation through connecting gear.But because the discharge of connecting gear is insensitive, production gets stuck, jumps factors such as material or employee's maloperation, usually cause reverse material to flow in the finished product, on production line, also lack a kind of device that can test and prevent diode reverse automatically.
The utility model content
To the deficiency of prior art, the purpose of the utility model provides a kind of proving installation that is used to prevent diode reverse, can detect the reverse material on the streamline automatically, prevents that reverse diode from flowing in the finished product.
To achieve these goals, the scheme of the utility model employing is following:
A kind of proving installation that is used to prevent diode reverse; Comprise first test lead and second test lead; Between said first test lead and second test lead, overlap measured diode; Its key is: also comprise relay, alarm and reset switch, its repeat circuit is provided with normal open switch, first normally closed switch and second normally closed switch;
One end of said normal open switch is connected with first test lead with positive source; The other end of this normal open switch is connected with second test lead with the input end of relay; The output terminal of relay is connected with an end of said alarm, links to each other with power cathode behind the other end string reset switch of this alarm;
Said first normally closed switch is serially connected in PLC (Programmable Logic Controller; Programmable logic controller (PLC)) with first connecting line of frequency converter on; Said second normally closed switch is serially connected on second connecting line of PLC and frequency converter, and the output terminal of said frequency converter links to each other with motor.
When measured diode is that positive flow is fashionable, first test lead is connected with the negative pole of measured diode, and second test lead is connected with the positive pole of measured diode; Almost do not have electric current to flow through on the measured diode, relay is not worked, and normal open switch is in off-state; First normally closed switch and second normally closed switch are in closure state; Therefore alarm is not worked, and PLC outputs a control signal in the frequency converter, thus the control machine operation.
If measured diode is reverse inflow, then first test lead is connected with the positive pole of measured diode, and second test lead is connected with the negative pole of measured diode; Measured diode constitutes current path, inflow current in the relay, relay work; Normal open switch is closed, and first normally closed switch and second normally closed switch break off, at this moment; The control signal of PLC can't arrive in the frequency converter, and motor quits work, and alarm produces warning message simultaneously.
Even measured diode is seen off, because normal open switch is closed, current path still keeps; Must press reset switch this moment; Let circuit break off, relay quits work, and normal open switch recovers off-state; First normally closed switch and second normally closed switch recover closure state, thereby system recovery normally moves.
As further describing; Describedly a kind ofly be used to prevent that the proving installation of diode reverse also is provided with test panel; This test panel is installed on the output shaft of said motor, is provided with positioning tooth at the edge of test panel, during test; Said measured diode overlap joint is between two test panels, and the positioning tooth on the test panel is fixed the pin of measured diode.
Said alarm is a light emitting diode, also can be hummer or other warning devices.
Test for ease, the end of said first test lead and second test lead is provided with test pieces.
The remarkable result of the utility model is: circuit structure is simple, and it is convenient to implement, and can test the reverse material on the production line automatically; Prevent that backward dioded from flowing in the finished product; Not high during test to the element positioning requirements yet, effectively improved product quality, strengthen the reliability of product quality.
Description of drawings
Fig. 1 is the fashionable circuit theory diagrams of measured diode positive flow;
Fig. 2 is the fashionable circuit theory diagrams of measured diode reverse direction flow;
Fig. 3 is the structural representation of test panel.
Embodiment
Below will be with reference to accompanying drawing, the specific embodiment of the utility model is carried out detailed description.
Like Fig. 1; Shown in Figure 2, a kind of proving installation that is used to prevent diode reverse comprises the first test lead T1, the second test lead T2, relay J, alarm D1 and reset switch S; Said relay J is provided with normal open switch K1, the first normally closed switch K2 and the second normally closed switch K3; The end of said normal open switch K1 is connected with the first test lead T1 with positive source, and the other end of this normal open switch K1 is connected with the second test lead T2 with the input end of relay J, overlap joint measured diode D between the said first test lead T1 and the second test lead T2; The output terminal of relay J is connected with the end of said alarm D1; Link to each other with power cathode behind the other end string reset switch S of this alarm D1, in the present embodiment, alarm D1 is the alarm lamp that light emitting diode is processed.
When detecting backward dioded for forced stoppage; The first normally closed switch K2 of relay J is serially connected on first connecting line of PLC and frequency converter; The second normally closed switch K3 of relay J is serially connected on second connecting line of PLC and frequency converter, and the output terminal of frequency converter links to each other with motor M.Here only in order to realize the switch control of motor M, the frequency conversion control technique of PLC control and motor M belongs to well known technology, repeats no more at this.
As shown in Figure 3; In order can on production line, to test automatically, this device also is provided with test panel P, and this test panel P is installed on the output shaft of said motor M; Edge at test panel P is provided with positioning tooth; During test, said measured diode D overlap joint is between two test panel P, and the positioning tooth on the test panel P is fixed the pin of measured diode D.
Test for ease, the end of the said first test lead T1 and the second test lead T2 is provided with test pieces.
The principle of work of the utility model is:
When measured diode D is that positive flow is fashionable, as shown in Figure 1, the first test lead T1 is connected with the negative pole of measured diode D; The second test lead T2 is connected with the positive pole of measured diode D, does not almost have electric current to flow through on the measured diode D, and relay J is not worked; Normal open switch K1 is in off-state, and the first normally closed switch K2 and the second normally closed switch K3 are in closure state, so alarm D1 does not work; PLC outputs a control signal in the frequency converter, thus the work of control motor M.
If measured diode D is reverse inflow, and is as shown in Figure 2, the first test lead T1 is connected with the positive pole of measured diode D; The second test lead T2 is connected with the negative pole of measured diode D, and measured diode D constitutes current path, inflow current in the relay J; Relay J work, normal open switch K1 is closed, and the first normally closed switch K2 and the second normally closed switch K3 break off; At this moment, the control signal of PLC can't arrive in the frequency converter, and motor M quits work; Alarm D1 produces warning message simultaneously, and backward dioded has appearred in the prompting employee.
In this state, even measured diode D sees off, because normal open switch K1 is closed; Current path still keeps, and must press reset switch S, the electric current in the interrupt circuit this moment; Let relay J quit work; Normal open switch K1 recovers off-state, and the first normally closed switch K2 and the second normally closed switch K3 recover closure state, thereby system recovery normally moves.
Claims (4)
1. proving installation that is used to prevent diode reverse; Comprise first test lead (T1) and second test lead (T2); Between said first test lead (T1) and second test lead (T2), overlap measured diode (D); It is characterized in that: also comprise relay (J), alarm (D1) and reset switch (S), its repeat circuit (J) is provided with normal open switch (K1), first normally closed switch (K2) and second normally closed switch (K3);
One end of said normal open switch (K1) is connected with first test lead (T1) with positive source; The other end of this normal open switch (K1) is connected with second test lead (T2) with the input end of relay (J); The output terminal of relay (J) is connected with an end of said alarm (D1), and other end string reset switch (S) back of this alarm (D1) links to each other with power cathode;
Said first normally closed switch (K2) is serially connected on first connecting line of PLC and frequency converter, and said second normally closed switch (K3) is serially connected on second connecting line of PLC and frequency converter, and the output terminal of said frequency converter links to each other with motor (M).
2. the proving installation that is used to prevent diode reverse according to claim 1; It is characterized in that: be provided with test panel (P); This test panel (P) is installed on the output shaft of said motor (M), is provided with positioning tooth at the edge of test panel (P), during test; Said measured diode (D) overlap joint is between two test panels (P), and the positioning tooth on the test panel (P) is fixed the pin of measured diode (D).
3. the proving installation that is used to prevent diode reverse according to claim 1 is characterized in that: said alarm (D1) is a light emitting diode.
4. the proving installation that is used to prevent diode reverse according to claim 1 is characterized in that: the end of said first test lead (T1) and second test lead (T2) is provided with test pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120517563XU CN202330617U (en) | 2011-12-13 | 2011-12-13 | Testing device for preventing inversion of diodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120517563XU CN202330617U (en) | 2011-12-13 | 2011-12-13 | Testing device for preventing inversion of diodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202330617U true CN202330617U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120517563XU Expired - Lifetime CN202330617U (en) | 2011-12-13 | 2011-12-13 | Testing device for preventing inversion of diodes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202330617U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393498A (en) * | 2011-12-13 | 2012-03-28 | 重庆平伟实业股份有限公司 | Testing apparatus for preventing reverse phenomenon of diode |
-
2011
- 2011-12-13 CN CN201120517563XU patent/CN202330617U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393498A (en) * | 2011-12-13 | 2012-03-28 | 重庆平伟实业股份有限公司 | Testing apparatus for preventing reverse phenomenon of diode |
| CN102393498B (en) * | 2011-12-13 | 2013-10-23 | 重庆平伟实业股份有限公司 | Testing apparatus for preventing reverse phenomenon of diode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |