CN213584578U - Safety door magnetism protection circuit and laser - Google Patents
Safety door magnetism protection circuit and laser Download PDFInfo
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- CN213584578U CN213584578U CN202022576334.7U CN202022576334U CN213584578U CN 213584578 U CN213584578 U CN 213584578U CN 202022576334 U CN202022576334 U CN 202022576334U CN 213584578 U CN213584578 U CN 213584578U
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Abstract
The utility model discloses a safety door magnetism protection circuit and laser instrument, safety door magnetism protection circuit includes door magnetism switching device, relay equipment and optical gate control circuit, relay equipment's first detection output end is connected with door magnetism switching device's first input, relay equipment's second detection output end is connected with door magnetism switching device's second input, relay equipment's first detection input end is connected with door magnetism switching device's first output, relay equipment's second detection input end is connected with door magnetism switching device's second output, relay equipment's signal input end is connected with power input end, optical gate control circuit's controlled end is connected with relay equipment's signal output end, optical gate control circuit's input and power input end are connected, optical gate control circuit's output and optical gate's power end are connected. Thereby improving the safety of the laser during operation.
Description
Technical Field
The utility model relates to a field optical gate laser protection technical field, especially a safety door magnetism protection circuit and laser instrument.
Background
In the working process of the laser, a door magnetic switch is generally adopted to detect whether a person opens the protection door to approach the laser, and when the controller detects that the person opens the protection door through the door magnetic switch, the programming logic stops the laser. However, in this control loop, the controller performs logic operation on one hand and also serves as an action execution device on the other hand, so that the safety performance is low, and if the control loop circuit fails and cannot reliably stop the laser operation, laser emitted by the laser will cause inevitable damage to a human body.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a safety door magnetism protection circuit. The aim is to improve the safety of the laser during operation.
In order to achieve the above object, the utility model provides a safety door magnetism protection circuit is applied to the laser instrument, the laser instrument includes the optical gate, its characterized in that, safety door magnetism protection circuit includes:
a power supply input terminal;
a gate switch device having a first input, a second input, a first output, and a second output;
the gate magnetic switching device is used for cutting off a path between a first input end and a first output end of the gate magnetic switching device and cutting off a path between a second input end and a second output end of the gate magnetic switching device when the protective door is opened;
the relay equipment is provided with a power supply end, a first detection output end, a first detection input end, a second detection output end, a second detection input end, a signal input end and a signal output end, wherein the first detection output end of the relay equipment is connected with the first input end of the door magnetic switch device, the second detection output end of the relay equipment is connected with the second input end of the door magnetic switch device, the first detection input end of the relay equipment is connected with the first output end of the door magnetic switch device, the second detection input end of the relay equipment is connected with the second output end of the door magnetic switch device, and the signal input end of the relay equipment is connected with the power supply input end;
the relay device is used for cutting off the path between the power supply input end and the signal output end of the relay device when the path between the first detection output end of the relay device and the first detection input end of the relay device is disconnected and/or the path between the second detection output end of the relay device and the second detection input end of the relay device is disconnected; and
the optical shutter control circuit is provided with a controlled end, an input end and an output end, the controlled end of the optical shutter control circuit is connected with the signal output end of the relay device, the input end of the optical shutter control circuit is connected with the power input end, and the output end of the optical shutter control circuit is connected with the power end of the optical shutter;
the shutter control circuit is configured to cut off a path between the power input terminal and a power source terminal of the shutter when the relay device cuts off the path between the power input terminal and the signal output terminal of the relay device.
Optionally, the gate magnetic switch device includes a first gate magnetic switch and a second gate magnetic switch, the first gate magnetic switch has a first pin and a second pin, a first input end of the gate magnetic switch device is the first pin of the first gate magnetic switch, and a first output end of the gate magnetic switch device is the second pin of the first gate magnetic switch; the second door magnetic switch is provided with a first pin and a second pin, the second input end of the door magnetic switch device is the first pin of the second door magnetic switch, and the second output end of the door magnetic switch device is the second pin of the second door magnetic switch.
Optionally, the relay device includes a safety relay, the safety relay has a power positive electrode pin, a power negative electrode pin, a first detection output pin, a first detection input pin, a second detection output pin, a second detection input pin, a first input pin, and a second input pin, the power end of the relay device includes the power positive electrode pin and the power negative electrode pin, the first detection input end and the second detection input end of the relay device are the first detection input pin and the second detection input pin of the safety relay, the first detection output end and the second detection output end of the relay device are the first detection output pin and the second detection output pin of the safety relay, and the input end of the relay device includes the first input pin and the second input pin of the safety relay; safety relay's positive pole foot, first input foot and second input foot respectively with power input end connects, safety relay's power negative pole foot ground connection, safety relay's first detection output foot with first door magnetic switch's first foot is connected, safety relay's first detection input foot with first door magnetic switch's second foot is connected, safety relay's second detection output foot with second door magnetic switch's first foot is connected, safety relay's second detection input foot with second door magnetic switch's second foot is connected.
Optionally, the shutter control circuit includes a first electromagnetic relay, a second electromagnetic relay, the safety relay further includes a first output pin and a second output pin, and the output terminal of the relay device includes the first output pin and the second output pin of the safety relay. A first output pin of the safety relay is connected with a first end of the first electromagnetic relay, and a second output pin of the safety relay is connected with a second end of the second electromagnetic relay; the second end of the first electromagnetic relay and the second end of the second electromagnetic relay are both grounded; the third end of the first electromagnetic relay is connected with the power supply input end, the third end of the second electromagnetic relay is connected with the fifth end of the first electromagnetic relay, and the fifth end of the second electromagnetic relay is connected with the power supply end of the shutter; the controlled end of the optical gate control circuit comprises a first pin of the first electromagnetic relay and a second pin of the second electromagnetic relay, the input end of the optical gate control circuit is the third end of the first electromagnetic relay, and the output end of the optical gate control circuit is the fifth end of the second electromagnetic relay.
Optionally, the relay device further has a reset terminal, and the reset terminal of the relay device is connected to the second detection input terminal of the relay device;
the relay equipment is used for switching on the path between the power input end and the signal output end of the relay equipment when the path between the first detection output end of the relay equipment and the first detection input end of the relay equipment is switched on and the path between the second detection output end of the relay equipment and the second detection input end of the relay equipment is switched on.
Optionally, the safety door magnetic protection circuit further includes an indication device, the relay device further has a status indication signal output end, and an input end of the indication device is connected with the status indication signal output end of the relay device;
and the relay equipment is used for outputting a corresponding state indicating signal according to the on-off state of a passage between the power supply input end and the signal output end of the relay equipment.
And the indicating equipment is used for indicating the working state of the relay equipment according to the state indicating signal.
Optionally, the indicating device is any one or more of an LED lamp, a buzzer, a loudspeaker and a display screen.
The utility model discloses still provide a laser instrument, the laser instrument includes laser head, optical gate and above-mentioned arbitrary safety door magnetism protection circuit, here is no longer repeated.
Optionally, the shutter is disposed in front of the laser head light source.
The utility model comprises a safety door magnetic protection circuit which is composed of a door magnetic switch device, a relay device and an optical gate control circuit, wherein, the door magnetic switch device is used for cutting off the passage between the first input end and the first output end of the door magnetic switch device and also cutting off the passage between the second input end and the second output end of the door magnetic switch device when the protection door is opened, the relay device is used for cutting off the passage between the power input end and the signal output end of the relay device when the passage between the first detection output end and the first detection input end is cut off and/or the passage between the second detection output end and the second detection input end is cut off, the optical gate control circuit is used for cutting off the passage between the power input end and the power end of the optical gate when the relay device cuts off the passage between the power input end and the signal output end of the relay device, thereby improving the safety of the laser in operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic block diagram of a safety door magnet protection circuit according to the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of the magnetic protective circuit of the safety door of the present invention.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of designing "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, an element defined as "a first" or "a second" can include at least one of the element either explicitly or implicitly. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and the protection scope of the present invention is no longer claimed.
To improve the safety of the laser during operation. The utility model provides a safe door magnetism protection circuit applies to the laser instrument, including door magnetism switching device 10, relay equipment 20 and optical gate control circuit 30, door magnetism switching device 10 has first input, second input, first output and second output. Relay device 20 has a power supply end, a first detection output end, a first detection input end, a second detection output end, a second detection input end, a signal input end and a signal output end, the first detection output end of relay device 20 is connected with the first input end of door magnetic switch device 10, the second detection output end of relay device 20 is connected with the second input end of door magnetic switch device 10, the first detection input end of relay device 20 is connected with the first output end of door magnetic switch device 10, the second detection input end of relay device 20 is connected with the second output end of door magnetic switch device 10, the signal input end of relay device 20 is connected with the power supply input end. The shutter control circuit 30 has a controlled terminal, an input terminal, and an output terminal, the controlled terminal of the shutter control circuit 30 is connected to the signal output terminal of the relay device 20, the input terminal of the shutter control circuit 30 is connected to the power input terminal, and the output terminal of the shutter control circuit 30 is connected to the power terminal of the shutter.
The magnetic door switch device 10 is configured to cut off a path between a first input terminal and a first output terminal of the magnetic door switch device 10 and also cut off a path between a second input terminal and a second output terminal of the magnetic door switch device 10 when the protective door is opened. The relay device 20 is configured to cut off the path between the power supply input terminal and the signal output terminal of the relay device 20 when the path between the first detection output terminal of the relay device 20 and the first detection input terminal of the relay device 20 is disconnected and/or the path between the second detection output terminal of the relay device 20 and the second detection input terminal of the relay device 20 is disconnected. The shutter control circuit 30 is for cutting off the path between the power input terminal and the power source terminal of the shutter when the relay device 20 cuts off the path between the power input terminal and the signal output terminal of the relay device 20.
In the working process of the laser, the optical shutter is placed at the front end of the laser head, when the optical shutter is electrified, the optical shutter is in an open state, laser emitted by the laser head can not be blocked, when the optical shutter is powered off, the optical shutter is restored to a normal closed state, and the laser emitted by the laser head is blocked by the optical shutter. The magnetic gate switch device 10 is used for detecting whether the protective door is opened, when a person pushes the protective door to enter the laser working range, the path between the first input end and the first output end of the magnetic gate switch device 10 is cut off, and the path between the second input end and the second output end of the magnetic gate switch device 10 is also cut off, so that when the path between the first detection output end of the relay device 20 and the first detection input end of the relay device 20 is cut off and/or the path between the second detection output end of the relay device 20 and the second detection input end of the relay device 20 is cut off, the relay device 20 is caused to cut off the path between the input end and the output end, namely, the path between the power input end and the controlled end of the shutter control circuit 30 is cut off, and then the shutter control circuit 30 is used for cutting off the path between the power input end and the power end of the shutter, therefore, the laser output by the laser is closed, and the entering personnel are prevented from being injured by the laser.
The utility model discloses a set up door magnetism switch device 10, relay equipment 20 and optical gate control circuit 30 etc. and constitute safety door magnetism protection circuit, wherein, door magnetism switch device 10 is used for when the guard gate is opened, cut off the route between the first input of door magnetism switch device 10 and the first output and also cut off the route between the second input of door magnetism light device and the second output, relay equipment 20 is used for when the route between first detection output end and the first detection input end is broken off and/or the route between the second detection output end and the second detection input end is broken off, cut off the route between power input end and the signal output end of relay equipment 20, optical gate control circuit 30 is used for when relay equipment 20 cuts off the route between power input end and the signal output end of relay equipment 20, cut off the route between power input end and the power end of optical gate, thereby improving the safety of the laser in operation.
Referring to fig. 2, in an embodiment of the present invention, the door magnetic switch device 10 includes a first door magnetic switch U1, a second door magnetic switch U2, the first door magnetic switch U1 has a first pin and a second pin, a first input end of the door magnetic switch device 10 is the first pin of the first door magnetic switch U1, and a first output end of the door magnetic switch device 10 is the second pin of the first door magnetic switch U1; the second gate switch U2 has a first pin and a second pin, the second input terminal of the gate switch device 10 is the first pin of the second gate switch U2, and the second output terminal of the gate switch device 10 is the second pin of the second gate switch U2.
The first door magnetic switch U1 and the second door magnetic switch U2 are fixed on the protective door, when the protective door is opened, the internal switches of the U1 and the U2 are changed from a closed state to an open state, the first pin and the second pin of the U1 are disconnected, and the first pin and the second pin of the U2 are disconnected. Through a door magnetic switch, can open the door and close the state of door through the accurate detection of hardware, reaction rate is very fast. Meanwhile, the structure of the double-door magnetic switch is adopted, one door magnetic switch is prevented from being damaged, and the safety of the door magnetic switch is improved.
Optionally, besides the door magnetic switch, security detection devices such as a safety grating and a photoelectric safety sensor can be used, and in actual application, selection can be performed according to actual requirements, and the selection is not limited here.
Alternatively, in addition to being installed on a single guard door, a plurality of door magnetic switches may be installed in series on a plurality of guard doors, thereby detecting the open or closed states of the plurality of guard doors.
Referring to fig. 2, in an embodiment of the present invention, the relay apparatus 20 includes a safety relay KA1, the safety relay KA1 has a power positive terminal a1, a power negative terminal a2, a first detection output terminal S11, a first detection input terminal S12, a second detection output terminal S21, a second detection input terminal S22, a first input terminal K14, a second input terminal K24, a first output terminal K13 and a second output terminal K23, the output terminal of the relay apparatus 20 includes a first output terminal K13 and a second output terminal K23 of the safety relay, the power source terminal of the relay apparatus 20 includes a power positive terminal a1 and a power negative terminal a2, the first detection input terminal and the second detection input terminal of the relay apparatus 20 are the first detection input terminal S12 and the second detection input terminal S22 of the safety relay KA1, the first detection output terminal and the second detection output terminal of the relay apparatus 20 are the first detection output terminal KA 11 and the second detection output terminal S57324S 58 1, the input terminals of the relay device 20 include a first input pin K14 and a second input pin K24 of the safety relay KA 1; a power positive pole pin a1, a first input pin K14 and a second input pin K24 of the safety relay KA1 are respectively connected with a first voltage V1 of a power input end, a power negative pole pin a2 of the safety relay KA1 is grounded, a first detection output pin S11 of the safety relay KA1 is connected with a first pin of a first gate magnetic switch U1, a first detection input pin S12 of the safety relay KA1 is connected with a second pin of the first gate magnetic switch U1, a second detection output pin S21 of the safety relay KA1 is connected with a first pin of a second gate magnetic switch U2, and a second detection input pin S22 of the safety relay KA1 is connected with a second pin of the second gate magnetic switch U2.
The safety relay KAI is a protection device formed by combining a plurality of relays and circuits, a safety contact is arranged between K14 and K13 of the safety relay KAI, and a safety contact is also arranged between K24 and K23. The safety relay KAI outputs a high level through S11 and S21, when the S11 and S12 paths are conducted and the S21 and S22 paths are conducted, namely the safety relay KA1 obtains the high level through S12 and S22, two groups of safety contacts of the safety relay KAI are in a closed state, the paths between K13 and K14 are conducted, the paths between K23 and K24 are conducted, namely K13 is directly connected with a first voltage V1, and K23 is directly connected with a first voltage V1. When the protective door is opened, namely the path between the first pin and the second pin of the first door magnetic switch U1 is disconnected and/or the path between the first pin and the second pin of the second door magnetic switch U2 is disconnected, the S12 of the safety relay KAI cannot receive the high-level signal and/or the S22 of the safety relay KAI cannot receive the high-level signal, so that two groups of safety contacts of the safety relay KAI are opened, the path between the K14 and the K13 is disconnected, and the path between the K24 and the K23 is disconnected according to the working characteristics of the safety relay KA 1.
Through safety relay KA1, can be more rapid reaction, in time cut off the route between the different equipment, improved the security of equipment work. Meanwhile, the safety relay KA1 adopts double-channel detection, so that safety accidents caused by the fact that a single channel fails to open safety contacts timely or fail to open due to faults are effectively prevented, and the working stability of the equipment is improved.
Referring to fig. 2, in an embodiment of the present invention, the shutter control circuit 30 includes a first electromagnetic relay KA2 and a second electromagnetic relay KA 3. A first output pin of the safety relay KA1 is connected with a first end of the first electromagnetic relay KA2, and a second output pin of the safety relay KA1 is connected with a second end of the second electromagnetic relay KA 3; the second end of the first electromagnetic relay KA2 and the second end of the second electromagnetic relay KA3 are both grounded; the third end of the first electromagnetic relay KA2 is connected with a first voltage V1, the third end of the second electromagnetic relay KA3 is connected with the fifth end of the first electromagnetic relay KA2, and the fifth end of the second electromagnetic relay KA3 is connected with the power supply end GS of the shutter; the controlled end of the shutter control circuit 30 comprises a first pin of the first electromagnetic relay KA2 and a second pin of the second electromagnetic relay KA3, the input end of the shutter control circuit 30 is the third end of the first electromagnetic relay KA2, and the output end of the shutter control circuit 30 is the fifth end of the second electromagnetic relay KA 3.
When two groups of safety contacts of the safety relay KA1 are closed, the first electromagnetic relay KA2 is connected with the first voltage V1 through the first end KZ1, according to the working principle of the electromagnetic relay, the first end of the KA2 is connected with the first voltage V1, the second end of the KA2 is grounded, the electromagnetic relay can adsorb a switch, and the third end and the fifth end of the KA2 are respectively connected with the first voltage V1. Similarly, the second electromagnetic relay KA3 is connected with the first voltage V1 through the first terminal KZ2, and according to the working principle of the electromagnetic relay, the third terminal and the fifth terminal of the second electromagnetic relay KA3 are respectively connected with the power supply terminals GS of the shutter. Since the fifth terminal of KA2 is connected to the third terminal of KA3, the path between power source terminal GS of the shutter and first voltage V1 is now turned on, and the shutter is normally opened after the shutter acquires first voltage V1. When two groups of safety contacts of the safety relay KAI are opened, a passage between the first end of the KA2 and the first voltage V1 is disconnected, meanwhile, a passage between the second end of the KA3 and the first voltage V1 is disconnected, according to the working principle of the electromagnetic relay, the third end and the fifth end of the KA2 are disconnected, the third end and the fifth end of the KA4 are disconnected, a passage between the power supply end GS of the optical gate and the first voltage V1 is disconnected, and the optical gate returns to a normal closed state. Through two electromagnetic relay groups, the work response is sensitive, the structure is simple, the cost can be effectively reduced, and the work safety is improved. Meanwhile, the double-set electromagnetic relay can also improve the stability of the operation of the relay, and prevent the situation that the path between the first voltage V1 and the power supply end GS of the optical gate cannot be normally cut off due to the fault of a certain relay.
Referring to fig. 2, in an embodiment of the present invention, the relay device 20 further has a reset terminal, and the reset terminal of the relay device 20 is connected to the second detection input terminal of the relay device 20. The safety relay KAI also has a reset pin S34, the reset pin S34 of the safety relay KAI is connected with S22, and the reset terminal of the relay device 20 is the reset pin S34 of the safety relay KAI.
The relay device 20 is configured to turn on a path between the power input terminal and the signal output terminal of the relay device 20 when a path between the first detection output terminal of the relay device 20 and the first detection input terminal of the relay device 20 is turned on and a path between the second detection output terminal of the relay device 20 and the second detection input terminal of the relay device 20 is turned on. When the fault is eliminated, the paths between S11 and S12 of the safety relay KAI are conducted, the paths between S21 and S22 are conducted, and S34 of the KAI obtains a high-level signal, namely when two groups of detection paths of the safety relay KAI are normally conducted, the safety relay KAI automatically resets, two safety contacts are closed again, and the path between K14 and K13 and the path between K24 and K23 are conducted. Through automatic re-setting, make the operation simpler, improved the convenience of using when having improved safety relay's security and stability.
Alternatively, besides using automatic reset, manual reset may be used, and an appropriate reset method may be selected according to actual requirements, which is not limited herein.
Referring to fig. 2, the magnetic protection circuit of the safety door further includes an indicating device, the relay device 20 further has a status indicating signal output terminal, and an input terminal of the indicating device is connected to the status indicating signal output terminal of the relay device 20; the indicating equipment is any one or more indicating elements of an LED lamp, a buzzer, a loudspeaker and a display screen.
The indicating equipment is used for indicating the working state of the safety relay according to the state indicating signal, indicating that the working state of the safety relay is the conducting state when the state indicating signal is the conducting state signal of the safety relay, and indicating that the working state of the safety relay is the cutting-off state when the state indicating signal is the cutting-off state signal of the safety relay. Through indicating equipment, can realize for the operating condition of user indication relay, convenience of customers observes and detects in real time to in time report to the police when breaking down, improved the convenience.
The following describes the working process of an embodiment of the present invention with reference to the above contents and fig. 2:
during operation of the laser, the shutter is placed in front of the laser.
When the guard gate is not opened, the path between S11 and S12 of U1 is conducted, and the path between S21 and S22 of U2 is conducted. Therefore, the paths between S11 and S12 of the safety relay KA1 are conducted, the paths between S21 and S22 are conducted, the safety relay KA1 can acquire a high-level signal sent from S11 from S12, and acquire a high-level signal sent from S21 from S22, at this time, two sets of safety contacts of the safety relay KA1 are in a normally closed state, the paths between K14 and K13 are conducted, and the paths between K24 and K23 are conducted. The second end of KA2, the second end of KA3 and first voltage V1 between the route switch on, according to electromagnetic relay's theory of operation, the third end and the fifth end of KA2 are connected, and the third end and the fifth end of KA3 are connected to the power supply end GS and the first voltage V1 conduction of optical gate to the optical gate connects after the electricity, and the optical gate is in the open state, and the laser that the laser head sent can normally pass through the optical gate and outwards launches. Meanwhile, the safety relay KAI outputs a state indicating signal to the INS through the IND, and the indicating equipment indicates that two groups of safety contacts of the safety relay KAI are in a closed state.
When the protective door is opened, the path between the first leg and the second leg of the first door sensor switch U1 is broken and/or the path between the first leg and the second leg of the second door sensor switch U2 is broken. Therefore, the passage between S11 and S12 and/or the passage between S21 and S22 of the safety relay KA1 are disconnected, and the safety relay KAI can not obtain a high level signal from S12 and/or S22. According to the operating principle of the safety relay KA1, since the safety relay KAI cannot obtain a high level signal from S12 and/or S22, the two sets of safety contacts of the safety relay KA1 change from a closed state to an open state, the path between K14 and K13 is cut off, and the path between K24 and K23 is cut off. The second end of the KA2, the second end of the KA3 and the first voltage V1 are all disconnected, according to the working principle of the electromagnetic relay, the third end and the fifth end of the KA2 are disconnected, the third end and the fifth end of the KA3 are disconnected, the passage between the power supply end GS of the optical shutter and the first voltage V1 is cut off, the optical shutter is powered off, the optical shutter is in a default closed state, and laser emitted by the laser head is blocked by the optical shutter and cannot be emitted to the outside. Meanwhile, the safety relay KAI outputs a state indicating signal to the INS through the IND, and the indicating equipment indicates that two groups of safety contacts of the safety relay KAI are in an open state.
When the fault is removed, the path between the first pin and the second pin of the first magnetic gate switch U1 is conducted, and the path between the first pin and the second pin of the second magnetic gate switch U2 is conducted, that is, the path between S11 and S12 of the safety relay KA1 is conducted, the path between S21 and S22 is conducted, and the safety relay KA1 obtains a high-level signal through S12 and S22. At the moment, a reset pin S34 of the safety relay KA1 obtains a high-level signal, according to the working principle of the safety relay KA1, when two groups of detection channels normally receive the high-level signal, the detection channels are automatically reset, two groups of safety contacts of the safety relay KA1 are closed, the optical gate is connected with electricity and is in an open state, and the laser normally emits laser outwards.
The utility model also provides a laser instrument, laser instrument include laser head, optical gate and claim above-mentioned safety door magnetism protection circuit according to, the optical gate set up in the place ahead of laser head light source. The specific circuit of the safety door magnetic protection circuit refers to the above embodiment.
It should be noted that the detailed structure of the laser device can refer to the above embodiments, and is not described herein again; it can be understood that, because the above-mentioned safety door magnet protection circuit is used in the laser, the embodiment of the laser includes all technical solutions of all embodiments of the above-mentioned safety door magnet protection circuit, and the achieved technical effects are also completely the same, and are not described herein again.
The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.
Claims (9)
1. A safety door magnetic protection circuit is applied to a laser, the laser comprises an optical gate, and the safety door magnetic protection circuit is characterized by comprising:
a power supply input terminal;
a gate switch device having a first input, a second input, a first output, and a second output;
the gate magnetic switching device is used for cutting off a path between a first input end and a first output end of the gate magnetic switching device and cutting off a path between a second input end and a second output end of the gate magnetic switching device when the protective door is opened;
the relay equipment is provided with a power supply end, a first detection output end, a first detection input end, a second detection output end, a second detection input end, a signal input end and a signal output end, wherein the first detection output end of the relay equipment is connected with the first input end of the door magnetic switch device, the second detection output end of the relay equipment is connected with the second input end of the door magnetic switch device, the first detection input end of the relay equipment is connected with the first output end of the door magnetic switch device, the second detection input end of the relay equipment is connected with the second output end of the door magnetic switch device, and the signal input end of the relay equipment is connected with the power supply input end;
the relay device is used for cutting off the path between the power supply input end and the signal output end of the relay device when the path between the first detection output end of the relay device and the first detection input end of the relay device is disconnected and/or the path between the second detection output end of the relay device and the second detection input end of the relay device is disconnected; and
the optical shutter control circuit is provided with a controlled end, an input end and an output end, the controlled end of the optical shutter control circuit is connected with the signal output end of the relay device, the input end of the optical shutter control circuit is connected with the power input end, and the output end of the optical shutter control circuit is connected with the power end of the optical shutter;
the shutter control circuit is configured to cut off a path between the power input terminal and a power source terminal of the shutter when the relay device cuts off the path between the power input terminal and the signal output terminal of the relay device.
2. The safety door magnetic protection circuit according to claim 1, wherein the door magnetic switch device comprises a first door magnetic switch and a second door magnetic switch, the first door magnetic switch has a first pin and a second pin, the first input end of the door magnetic switch device is the first pin of the first door magnetic switch, and the first output end of the door magnetic switch device is the second pin of the first door magnetic switch; the second door magnetic switch is provided with a first pin and a second pin, the second input end of the door magnetic switch device is the first pin of the second door magnetic switch, and the second output end of the door magnetic switch device is the second pin of the second door magnetic switch.
3. The safety gate magnetic protection circuit according to claim 2, wherein the relay device includes a safety relay having a power supply positive pin, a power supply negative pin, a first detection output pin, a first detection input pin, a second detection output pin, a second detection input pin, a first input pin, a second input pin, a first output pin, and a second output pin, the output terminal of the relay device includes the first output pin and the second output pin of the safety relay, the power supply terminal of the relay device includes the power supply positive pin and the power supply negative pin, the first detection input terminal and the second detection input terminal of the relay device are the first detection input pin and the second detection input pin of the safety relay, the first detection output terminal and the second detection output terminal of the relay device are the first detection output pin and the second detection output pin of the safety relay, the input end of the relay equipment comprises a first input pin and a second input pin of the safety relay; safety relay's positive pole foot, first input foot and second input foot respectively with power input end connects, safety relay's power negative pole foot ground connection, safety relay's first detection output foot with first door magnetic switch's first foot is connected, safety relay's first detection input foot with first door magnetic switch's second foot is connected, safety relay's second detection output foot with second door magnetic switch's first foot is connected, safety relay's second detection input foot with second door magnetic switch's second foot is connected.
4. The safety gate magnet protection circuit of claim 3, wherein said shutter control circuit comprises a first electromagnetic relay, a second electromagnetic relay; a first output pin of the safety relay is connected with a first end of the first electromagnetic relay, and a second output pin of the safety relay is connected with a second end of the second electromagnetic relay; the second end of the first electromagnetic relay and the second end of the second electromagnetic relay are both grounded; the third end of the first electromagnetic relay is connected with the power supply input end, the third end of the second electromagnetic relay is connected with the fifth end of the first electromagnetic relay, and the fifth end of the second electromagnetic relay is connected with the power supply end of the shutter; the controlled end of the optical gate control circuit comprises a first pin of the first electromagnetic relay and a second pin of the second electromagnetic relay, the input end of the optical gate control circuit is the third end of the first electromagnetic relay, and the output end of the optical gate control circuit is the fifth end of the second electromagnetic relay.
5. The magnetic safety door shield circuit according to any one of claims 1 to 4, wherein the relay device further has a reset terminal, the reset terminal of the relay device being connected to the second detection input terminal of the relay device;
the relay equipment is used for switching on the path between the power input end and the signal output end of the relay equipment when the path between the first detection output end of the relay equipment and the first detection input end of the relay equipment is switched on and the path between the second detection output end of the relay equipment and the second detection input end of the relay equipment is switched on.
6. The magnetic safety door protection circuit according to any one of claims 1 to 4, characterized in that the magnetic safety door protection circuit further comprises an indicating device, the relay device further has a status indicating signal output terminal, and an input terminal of the indicating device is connected with the status indicating signal output terminal of the relay device;
the relay equipment is used for outputting a corresponding state indicating signal according to the on-off state of a passage between the power supply input end and the signal output end of the relay equipment;
and the indicating equipment is used for indicating the working state of the relay equipment according to the state indicating signal.
7. The safety door magnetic protection circuit according to claim 6, wherein the indicating device is any one or more of an LED lamp, a buzzer, a loudspeaker and a display screen.
8. A laser comprising a laser head, a shutter and a safety gate protection circuit as claimed in any one of claims 1 to 7.
9. The laser of claim 8 wherein said shutter is disposed in front of said laser head light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022576334.7U CN213584578U (en) | 2020-11-09 | 2020-11-09 | Safety door magnetism protection circuit and laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022576334.7U CN213584578U (en) | 2020-11-09 | 2020-11-09 | Safety door magnetism protection circuit and laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213584578U true CN213584578U (en) | 2021-06-29 |
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ID=76535417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022576334.7U Active CN213584578U (en) | 2020-11-09 | 2020-11-09 | Safety door magnetism protection circuit and laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213584578U (en) |
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2020
- 2020-11-09 CN CN202022576334.7U patent/CN213584578U/en active Active
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Address after: 518000 401m-2, bike technology building, No.9, scientific research road, Maling community, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Taide Laser Technology Co.,Ltd. Address before: 518000 401m-2, bike technology building, No.9, scientific research road, Maling community, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN TETE LASER TECHNOLOGY Co.,Ltd. |
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