CN203792777U - Dual-valve safety control system of press machine - Google Patents
Dual-valve safety control system of press machine Download PDFInfo
- Publication number
- CN203792777U CN203792777U CN201420113205.6U CN201420113205U CN203792777U CN 203792777 U CN203792777 U CN 203792777U CN 201420113205 U CN201420113205 U CN 201420113205U CN 203792777 U CN203792777 U CN 203792777U
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- China
- Prior art keywords
- auxiliary reclay
- control circuit
- dual
- plc
- intermediate relay
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- Expired - Fee Related
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Abstract
The utility model belongs to the field of press machines and discloses a dual-valve safety control system of a press machine. The dual-valve safety control system comprises a dual-valve control loop and control circuits. The dual-valve control loop comprises a keep relay normally-closed contact, a third intermediate relay normally-open contact, a button switch, a first intermediate relay normally-open contact and a second intermediate relay normally-open contact, wherein the keep relay normally-closed contact, the third intermediate relay normally-open contact and the button switch are sequentially connected in series, and the first intermediate relay normally-open contact and the second intermediate relay normally-open contact are sequentially connected in parallel. The control circuits comprise a PLC control circuit and a brake control circuit. The PLC control circuit comprises a first intermediate relay connected to a signal output end of a PLC, a second intermediate relay and a keep relay; the brake control circuit comprises a third intermediate relay connected to an electronic cam controller. The dual-valve safety control system improves safety performance of the press machine, eliminates potential safety hazards and can be used in dual-valve press machines.
Description
Technical field
The utility model relates to a kind of forcing press, particularly a kind of forcing press dual valve control system.
Background technology
Dual valve safety control system of the prior art is as shown in Fig. 6-8, comprise dual valve control loop (see figure 6) and control circuit, described dual valve control loop comprises the normally closed electric shock KA5-1 of the protective relay being cascaded, the second auxiliary reclay normally opened contact KA2-1, press button SB3 and braking circuit, and described braking circuit comprises the first auxiliary reclay normally opened contact KA1-1 and the 3rd auxiliary reclay normally opened contact KA3-1 being connected in parallel; Described control circuit comprises PLC control circuit (see figure 7) and brake control circuit (Fig. 8); described PLC control circuit comprises the second auxiliary reclay KA2 and the protective relay KA5 being connected on PLC signal output part, and described brake control circuit comprises the first auxiliary reclay KA1 and the 3rd auxiliary reclay KA3 being connected on electronic cam controller.
When forcing press need to be worked, the first auxiliary reclay KA1 and the 3rd auxiliary reclay KA3 are electric cam brake signal, normal power-up, the first repeat circuit KA1 and the 3rd auxiliary reclay KA3 coil obtain electric work, make the first auxiliary reclay normally opened contact KA-1 and the 3rd auxiliary reclay normally opened contact KA3-1 closed, protective relay normally opened contact KA5-1 is closed, when forcing press is worked, Programmable Logic Controller PLC controls the second auxiliary reclay KA2 and obtains electric, the second auxiliary reclay normally opened contact KA2-1 is closed, dual valve obtains electric, press ram is started working.When forcing press need to quit work, electronic cam controller sends stop sign, make the first auxiliary reclay KA1 and the 3rd auxiliary reclay KA3 dead electricity, make two normally opened contact KA1-1, the of short duration disconnection of KA3-1 (can be again closed after disconnection), and signal is passed to PLC, and allow PLC control the second auxiliary reclay KA2 coil blackout simultaneously, the second auxiliary reclay normally opened contact KA2-1 reverts to normally open, dual valve power-off, forcing press quits work.If in this control system there is adhesion in the second auxiliary reclay KA2 coil remanent magnetism or normally opened contact KA2-1, can cause the second auxiliary reclay normally opened contact KA2-1 normally not throw off,, there is safe hidden danger in forcing press misoperation.
Utility model content
The purpose of this utility model is to provide a kind of forcing press dual valve safety control system, improves the security of forcing press work, eliminates safe hidden trouble.
The purpose of this utility model is achieved in that a kind of forcing press dual valve safety control system, comprise dual valve control loop and control circuit, described dual valve control loop comprises the normally closed electric shock KA5-1 of the protective relay being cascaded successively, the 3rd auxiliary reclay normally opened contact KA3-1, press button SB3 and the first auxiliary reclay normally opened contact KA1-1 being connected in parallel, the second auxiliary reclay normally opened contact KA2-1; Described control circuit comprises PLC control circuit and brake control circuit; described PLC control circuit comprises the first auxiliary reclay KA1, the second auxiliary reclay KA2 and the protective relay KA5 being connected on PLC signal output part, and described brake control circuit comprises the 3rd auxiliary reclay KA3 being connected on electronic cam controller.
When press ram moves, the coil that electronic cam controller is controlled the 3rd auxiliary reclay KA3 always electric, the 3rd auxiliary reclay normally opened contact KA3-1 is closed, protective relay normally-closed contact KA5-1 is closure state, when PLC controls the first auxiliary reclay KA1 and the second auxiliary reclay KA2 coil obtains electric, make the first auxiliary reclay normally opened contact KA1-1 and the second auxiliary reclay normally opened contact KA2-1 closed, dual valve obtains electric, and forcing press is started working; When forcing press need to stop, electronic cam controller sends stop sign, the of short duration disconnection of the 3rd auxiliary reclay normally opened contact KA3-1, and signal is passed to PLC, the of short duration cut-off signal of electronic cam controller BR1 mouth also can send to PLC simultaneously, PLC controls the first auxiliary reclay KA1 and the power-off simultaneously of the second auxiliary reclay KA2 coil, and the first auxiliary reclay normally opened contact KA1-1, the second auxiliary reclay normally opened contact KA2-1 revert to normally open.Dual valve power-off, forcing press quits work; In the forcing press course of work, no matter there is adhesion in the first auxiliary reclay KA1, the second auxiliary reclay KA2, the 3rd auxiliary reclay KA3 coil remanent magnetism or normally opened contact, all there will not be misoperation.Between KA1, KA2, no matter Na Yi road goes wrong, and can not cause misoperation; If KA3 goes wrong, the stopping signal of electronic cam controller BR1 mouth can also normal transmission arrive PLC, so can guarantee that forcing press there will not be misoperation.Compared with prior art, the beneficial effects of the utility model are, the utility model has improved the security performance of forcing press, has eliminated potential safety hazard.The utility model can be used in dual valve forcing press.
Accompanying drawing explanation
Fig. 1 is dual valve control loop schematic diagram in the utility model.
Fig. 2 is PLC control circuit schematic diagram in the utility model.
Fig. 3 is PLC control circuit control principle block diagram in the utility model.
Fig. 4 is brake control circuit schematic diagram in the utility model.
Fig. 5 is brake control circuit control principle block diagram in the utility model.
Fig. 6 is dual valve control loop schematic diagram in prior art.
Fig. 7 is PLC control circuit schematic diagram in prior art.
Fig. 8 is brake control circuit schematic diagram in prior art.
The specific embodiment
A kind of forcing press dual valve safety control system as Figure 1-5, comprise dual valve control loop and control circuit, described dual valve control loop comprises the normally closed electric shock KA5-1 of the protective relay being cascaded successively, the 3rd auxiliary reclay normally opened contact KA3-1, press button SB3 and the first auxiliary reclay normally opened contact KA1-1 being connected in parallel, the second auxiliary reclay normally opened contact KA2-1; Described control circuit comprises PLC control circuit and brake control circuit; described PLC control circuit comprises the first auxiliary reclay KA1, the second auxiliary reclay KA2 and the protective relay KA5 being connected on PLC signal output part, and described brake control circuit comprises the 3rd auxiliary reclay KA3 being connected on electronic cam controller.
When press ram moves, in adjusting microinching situation, by PLC, control KA1 and KA2 coil blackout, dual valve power-off, realizes that slide block stops, in single situation, electric cam at slide block movement to brake angle when (330 °), electric cam sends brake signal, auxiliary reclay KA3 coil blackout, make the of short duration disconnection of two normally opened contact KA3-1 (can be again closed after disconnection), and signal is passed to PLC, allow PLC control the first auxiliary reclay KA1 and the second auxiliary reclay KA2 coil blackout simultaneously, the first auxiliary reclay normally opened contact KA1-1 and the second auxiliary reclay normally opened contact KA2-1 revert to normally open, dual valve power-off, press ram stop motion, continuously in situation, outside offers the continuous stop signal of PLC, PLC offers electric cam stop sign, slide block movement is to brake during angle, electric cam sends brake signal, auxiliary reclay KA3 coil blackout, make the of short duration disconnection of two normally opened contact KA3-1 (can be again closed after disconnection), and signal is passed to PLC, allow PLC control the first auxiliary reclay KA1 and the second auxiliary reclay KA2 coil blackout simultaneously, the first auxiliary reclay normally opened contact KA1-1 and the second auxiliary reclay normally opened contact KA2-1 revert to normally open, dual valve power-off, press ram stop motion, in the forcing press course of work, KA1, between KA2, no matter Na Yi road goes wrong, can not cause misoperation, if KA3 goes wrong, the stopping signal of electronic cam controller BR1 mouth can also normal transmission arrive PLC, so can guarantee that forcing press there will not be misoperation.
The utility model is not limited to above-described embodiment; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection domain of the present utility model.
Claims (1)
1. a forcing press dual valve safety control system, it is characterized in that, comprise dual valve control loop and control circuit, described dual valve control loop comprises the normally closed electric shock of the protective relay being cascaded successively (KA5-1), the 3rd auxiliary reclay normally opened contact (KA3-1), press button (SB3) and the first auxiliary reclay normally opened contact (KA1-1) being connected in parallel, the second auxiliary reclay normally opened contact (KA2-1); Described control circuit comprises PLC control circuit and brake control circuit; described PLC control circuit comprises the first auxiliary reclay (KA1), the second auxiliary reclay (KA2) and the protective relay (KA5) being connected on PLC signal output part, and described brake control circuit comprises the 3rd auxiliary reclay (KA3) being connected on electronic cam controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113205.6U CN203792777U (en) | 2014-03-13 | 2014-03-13 | Dual-valve safety control system of press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420113205.6U CN203792777U (en) | 2014-03-13 | 2014-03-13 | Dual-valve safety control system of press machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203792777U true CN203792777U (en) | 2014-08-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420113205.6U Expired - Fee Related CN203792777U (en) | 2014-03-13 | 2014-03-13 | Dual-valve safety control system of press machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN203792777U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108958160A (en) * | 2018-08-24 | 2018-12-07 | 东莞市铭科精技五金制品有限公司 | A kind of punching machine bivalve detects safety circuit automatically |
| CN111703108A (en) * | 2020-06-12 | 2020-09-25 | 扬力集团股份有限公司 | Control system of double-point servo press |
-
2014
- 2014-03-13 CN CN201420113205.6U patent/CN203792777U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108958160A (en) * | 2018-08-24 | 2018-12-07 | 东莞市铭科精技五金制品有限公司 | A kind of punching machine bivalve detects safety circuit automatically |
| CN108958160B (en) * | 2018-08-24 | 2023-08-11 | 铭科精技控股股份有限公司 | Automatic detection safety circuit for double valves of punching machine |
| CN111703108A (en) * | 2020-06-12 | 2020-09-25 | 扬力集团股份有限公司 | Control system of double-point servo press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20200313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |