CN202240688U - Automatic switching device of safety protective door of machine tool equipment - Google Patents
Automatic switching device of safety protective door of machine tool equipment Download PDFInfo
- Publication number
- CN202240688U CN202240688U CN2011203091339U CN201120309133U CN202240688U CN 202240688 U CN202240688 U CN 202240688U CN 2011203091339 U CN2011203091339 U CN 2011203091339U CN 201120309133 U CN201120309133 U CN 201120309133U CN 202240688 U CN202240688 U CN 202240688U
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- protective door
- relay
- gas valve
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- electromagnetic gas
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Abstract
The utility model relates to an automatic switching device of a safety protective door of machine tool equipment, which is characterized in that the automatic switching device comprises an automatic switching circuit of the safety protective door and a PLC (Programmable Logic Controller), wherein the automatic switching circuit of the safety protective door comprises a first relay, a second relay, a first electromagnetic gas valve, a second electromagnetic gas valve and an automatic start button, the PLC outputs a signal to an automatic operation indicator light of the machine tool equipment to control the second relay, a group of normally closed contacts of the second relay control the automatic switching circuit of the safety protective door, a group of normally open contacts of the automatic start button control the second electromagnetic gas valve and the first relay, the second electromagnetic gas valve controls a protective door to be closed, a group of the normally open contacts of the first relay are self-locking contacts, the other group of the normally open contacts of the first relay are serially connected with the normally open contacts of a door switch of the safety protective door and the other group of the normally closed contacts of the second relay to output an automatic operation input signal of the machine tool equipment; a group of normally closed contacts of the first relay control a first electromagnetic gas valve which controls the protective door to open.
Description
Technical field
The utility model relates to machine tool security protection door switch unit.
Background technology
In the use of lathe, the most dangerous, need most the position of taking safeguard measure, at first be the position that various cutters are processed workpiece.On this position, the high speed rotation of workpiece and cutter is arranged and move, very high temperature is arranged, also have splashing of residual processing thing, this can bring various danger to operating personnel, therefore, protective cover is installed at this position of equipment is just seemed very necessary.Simultaneously, protective cover is installed also can be protected process not receive external influence, thereby improve the precision of processing.On protective cover, need to install protective door as the passage between operating personnel and the processing work, and how to make protective door play the safeguard protection effect, become safety door, just seem particularly important.
The safety protective door place of general Digit Control Machine Tool has all designed safety interlock, and when opening, lathe can not move.Be because tool setting or trial cut add needs such as man-hour now, open the state that Men Caineng sees workpiece and cutter clearly, at this moment owing to the safety protective door lathe of interlocking can not move and can't carry out tool setting etc., so mostly with the interlocking place to short circuit; A kind of in addition situation is because the protective door of some used equipments adopts manual moving, and does not just have safety interlock originally, and protective door has been opened equipment and still can have been turned round.Safety protective door has just played not protective action like this, exists bigger potential safety hazard.
Safety protective door has kinds such as automatic or manual opening and closing, and mode has translation, rotation etc.And original automatic safe protective door generally all adopts PLC control, not only on PLC, adopts independent input, output point, and is to enroll the opening and closing of automatic safe protective door in equipment operation or the procedure in device programming.If but the input on the PLC, output point are not enough; Particularly do not have unnecessary input, output point on the PLC of some used equipments at all, realize opening and closing automatically of lathe protective door, according to original thinking; Must increase electrical equipments such as PLC expansion and relay, required cost is higher.
The utility model content
The purpose of the utility model is to provide a kind of machine tool security protection door operator, on the basis of the input that does not increase the PLC controller, output point, realizes the safety protective door automatic switch.
Machine tool security protection door operator; Be characterized in; Comprise safety protective door automatic switching circuit and PLC controller; The safety protective door automatic switching circuit comprises first relay, second relay, first electromagnetic gas valve, second electromagnetic gas valve and auto-start button, and wherein the PLC controller is exported to signal controlling second relay of the automatic run indicator of machine tool, one group of this safety protective door automatic switching circuit of normally-closed contact control of second relay; One group of normally opened contact of auto-start button is controlled second electromagnetic gas valve and first relay; Wherein second electromagnetic gas valve control protective door is closed; And one group of normally opened contact of first relay is a self-holding contact, and another group normally opened contact is connected with the automatic operating input signal of output machine tool with the door switch normally opened contact of safety protective door and another group normally-closed contact of second relay; One group of normally-closed contact of first relay is controlled first electromagnetic gas valve, and first electromagnetic gas valve control protective door is opened.
Automatically an indicator lamp of operation is all arranged on the guidance panel of general Digit Control Machine Tool, running beginning automatically, indicator lamp is bright, and running finishes automatically, and indicator lamp goes out; And the lathe protective door also is when turning round automatically, to be in closed condition, after running finishes automatically, opens protective door dismounting processing work.Therefore exist necessary relation between the two, can reach opening and closing automatically of control lathe safety protective door through the signal that the former PLC of equipment exports to automatic run indicator.The utility model does not have the automatic safe protective door to some used equipments or safety protective door has not had automatic function; And the PLC of equipment component has not had unnecessary input, output point, if increase PLC then cost is higher, and no suitable situation such as installing space in the equipment component electric box; How spending lower cost utilizes the original components and parts of equipment to make safety protective door realize automatic function; Really play safe and reliable protective action, eliminate safe hidden trouble, become the solution key of problem.Through the utility model, utilized the indicator lamp of the automatic operation on the guidance panel of old Digit Control Machine Tool, running beginning automatically, indicator lamp is bright, and running finishes automatically, and indicator lamp goes out; And the lathe protective door will play the security protection effect, must when equipment turns round automatically, be in closed condition, after running finishes automatically, just can open protective door dismounting processing work.Can realize controlling opening and closing automatically of lathe safety protective door through the signal that the former PLC of used equipment exports to automatic run indicator thus.This art designs is transformed, and adopts simple circuit, design cleverly, and lower cost is realized opening and closing automatically of lathe protective door, reaches safe and reliable protective action.Lathe manufacturing enterprise is reequiped on used equipment with other manufacturing enterprises or the change of installing the thinking of automatic protection door additional plays bigger positive role in manufacturing and designing of automatic protection door.
Description of drawings
Fig. 1 is the circuit diagram of machine tool security protection door operator.
The specific embodiment
In the following technical terms, the contact is used for controlling the electric connecting relation of a kind of on-off action of " control " expression of electrical equipment, promptly electric current is led to this electrical equipment during this closing of contact, and this contact cuts off the electric current of this electrical equipment when breaking off; And a kind of constructional incidence relation is represented in " control " of electromagnetic gas valve control protective door in closing or opening, and promptly the electromagnetic gas valve exhaust hood that alives just drives protective door, to close protective door or to open protective door.
As shown in Figure 1; Machine tool security protection door operator comprises PLC controller (not showing in the drawings) and safety protective door automatic switching circuit, and the safety protective door automatic switching circuit comprises first relay 11, second relay 12, first electromagnetic gas valve 21, second electromagnetic gas valve 22 and the auto-start button.
Design safety protective door automatic switching circuit at the protective door auto state, utilizes the PLC controller to export to the signal Y 53.0 of automatic run indicator, control relay 12, one group of normally-closed contact, the 1210 control safety protective door automatic switching circuits of relay 12; Utilize one group of normally opened contact, the 300 control electromagnetic gas valves 22 and relay 11 of auto-start button; Wherein electromagnetic gas valve 22 is closed for the control protective door; And one group of normally opened contact 1100 of relay 11 is a self-holding contact; Another group normally opened contact 1101 is connected with another group normally-closed contact 1211 of door switch normally opened contact 410 and relay 12, seals in PLC and moves automatically in the circuit, when the protective door auto state, realizes the control of the automatic operating input signal X 8.1 of PLC; One group of normally-closed contact 111 of relay 11 is used to control electromagnetic gas valve 21, realizes the unlatching of control protective door.And when the protective door manual state, through another group normally opened contact 301 disconnection safety protective door automatic switching circuits of auto-start button, but the hand switch protective door.
Machine safety protective door recloser operation principle:
When the non-automatic running of equipment, protective door is opened, and will automatically turn round like equipment this moment; Then the automatic control handle of safety protective door is threaded to auto state, presses auto-start button, 11 adhesives of first relay and self-locking; Second electromagnetic gas valve 22; Cylinder promotes protective door and closes automatically, and protective door is closed the back and triggered X 8.1, and equipment begins automatic operation.And Y53.0 output this moment signal makes automatic run indicator bright; While second relay 12 gets electric, and the safety protective door automatic switching circuit is broken off, and protective door leans on air pressure to realize closing; Only if with great strength or manually press electromagnetic gas valve, otherwise protective door can't be opened.The equipment end of turning round automatically, run indicator is gone out automatically, second relay, 12 dead electricity are connected the safety protective door automatic switching circuit simultaneously, first electromagnetic gas valve 21 electric, lean on cylinder to open protective door automatically.
Claims (1)
1. machine tool security protection door operator; It is characterized in that; Comprise safety protective door automatic switching circuit and PLC controller; The safety protective door automatic switching circuit comprises first relay, second relay, first electromagnetic gas valve, second electromagnetic gas valve and auto-start button, and wherein the PLC controller is exported to signal controlling second relay of the automatic run indicator of machine tool, one group of this safety protective door automatic switching circuit of normally-closed contact control of second relay; One group of normally opened contact of auto-start button is controlled second electromagnetic gas valve and first relay; Wherein second electromagnetic gas valve control protective door is closed; And one group of normally opened contact of first relay is a self-holding contact, and another group normally opened contact is connected with the automatic operating input signal of output machine tool with the door switch normally opened contact of safety protective door and another group normally-closed contact of second relay; One group of normally-closed contact of first relay is controlled first electromagnetic gas valve, and first electromagnetic gas valve control protective door is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203091339U CN202240688U (en) | 2011-08-23 | 2011-08-23 | Automatic switching device of safety protective door of machine tool equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203091339U CN202240688U (en) | 2011-08-23 | 2011-08-23 | Automatic switching device of safety protective door of machine tool equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202240688U true CN202240688U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203091339U Expired - Fee Related CN202240688U (en) | 2011-08-23 | 2011-08-23 | Automatic switching device of safety protective door of machine tool equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202240688U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890483A (en) * | 2012-09-16 | 2013-01-23 | 中国安全生产科学研究院 | Function safety monitoring development and demonstration system for major hazard source equipment |
| CN103019148A (en) * | 2012-11-20 | 2013-04-03 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for starting and stopping single equipment controlled by double relays |
| CN104907878A (en) * | 2014-03-11 | 2015-09-16 | 东芝机械株式会社 | Lock preventing device |
| CN107791088A (en) * | 2016-09-07 | 2018-03-13 | 远瞻生活科技有限公司 | Work mechanism anti-pinch servo automatic door device |
| CN110653309A (en) * | 2019-11-13 | 2020-01-07 | 天津市中环电子计算机有限公司 | Plug-in pin trimming workbench and operation method thereof |
| CN110653309B (en) * | 2019-11-13 | 2024-05-31 | 中环通力(天津)信息技术有限公司 | Plug-in pin trimming workbench and operation method thereof |
-
2011
- 2011-08-23 CN CN2011203091339U patent/CN202240688U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890483A (en) * | 2012-09-16 | 2013-01-23 | 中国安全生产科学研究院 | Function safety monitoring development and demonstration system for major hazard source equipment |
| CN102890483B (en) * | 2012-09-16 | 2014-09-17 | 中国安全生产科学研究院 | Function safety monitoring development and demonstration system for major hazard source equipment |
| CN103019148A (en) * | 2012-11-20 | 2013-04-03 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for starting and stopping single equipment controlled by double relays |
| CN104907878A (en) * | 2014-03-11 | 2015-09-16 | 东芝机械株式会社 | Lock preventing device |
| CN104907878B (en) * | 2014-03-11 | 2017-05-03 | 东芝机械株式会社 | Lock preventing device |
| CN107791088A (en) * | 2016-09-07 | 2018-03-13 | 远瞻生活科技有限公司 | Work mechanism anti-pinch servo automatic door device |
| CN110653309A (en) * | 2019-11-13 | 2020-01-07 | 天津市中环电子计算机有限公司 | Plug-in pin trimming workbench and operation method thereof |
| CN110653309B (en) * | 2019-11-13 | 2024-05-31 | 中环通力(天津)信息技术有限公司 | Plug-in pin trimming workbench and operation method thereof |
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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: 20120530 Termination date: 20170823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |