A safety door lock control circuit based on a laser welding machine and a cleaning machine

Abstract

The utility model discloses a kind of safety door lock control circuit based on laser welding machine and cleaning machine applied to circuit field, including laser enable control circuit, laser enable state indicating circuit and alarm signal detection and release circuit, laser enable control circuit includes relay K1, laser enable state indicating circuit includes green light LP1, red light LP2 and buzzer LS1, alarm signal detection and release circuit includes door lock switch K3 and switch button K2, switch button K2 is used for alarm reset and enables restart, pass through the above structure and form a safety protection circuit of safety door lock alarm, locking, manual reset restart, solve the problem that safety door lock lacks intelligent control circuit in prior art.

Description

Technical Field

[0001] This utility model relates to the field of circuits, and in particular to a safety door lock control circuit based on a laser welding machine and a cleaning machine. Background Technology

[0002] As laser welding increasingly replaces traditional arc welding in metal welding, and laser cleaning replaces mechanical grinding and chemical treatment in rust removal, while improving welding and rust removal efficiency and quality, the high energy density of the laser beam and its radiation necessitate that operators wear laser protective clothing, gloves, safety glasses, or masks during laser welding and cleaning. Furthermore, it is essential to establish an effective enclosed space for these equipment usage areas and use effective laser radiation shielding materials to prevent laser radiation and ensure personal safety.

[0003] To prevent injuries caused by unprotected personnel entering the workspace during laser welding and cleaning, safety locks must be installed according to relevant EU safety standards. If someone enters, the laser equipment must stop working immediately. However, existing technology lacks control circuits adapted to such safety locks. Utility Model Content

[0004] The core of this utility model lies in the fact that a safety protection circuit for a safety door lock is formed by using a door lock switch K3, a relay K1, a switch button K2, a buzzer LS1, a green light LP1, and a red light LP2 to alarm, lock, manually reset, and restart the safety door lock, thus solving the problem that existing safety door locks lack intelligent control circuits.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A safety door lock control circuit based on a laser welding machine and a cleaning machine includes a laser enable control circuit, a laser enable status indication circuit, and an alarm signal detection and deactivation circuit. The laser enable control circuit includes a relay K1, the laser enable status indication circuit includes a green light LP1, a red light LP2, and a buzzer LS1, and the alarm signal detection and deactivation circuit includes a door lock switch K3 and a switch button K2. The switch button K2 is used for alarm reset and enable restart.

[0007] This application also includes three sets of contact combinations, namely contact combination one, contact combination two, and contact combination three.

[0008] Furthermore, contact assembly one includes contact E, contact D, and contact F.

[0009] Furthermore, contact combination two includes contact H, contact I, and contact G.

[0010] Furthermore, contact assembly three includes contact A, contact B, and contact C.

[0011] Furthermore, when the protective room door is closed, the door lock switch K3 is in the closed state.

[0012] Compared with existing technologies, the advantages of this utility model are: This solution uses door lock switch K3, relay K1, switch button K2, buzzer LS1, green light LP1 and red light LP2 to form a safety protection circuit for door lock alarm, locking, manual reset and restart, and controls the laser enable circuit in a simple and reliable manner. Attached Figure Description

[0013] Figure 1 This is a circuit diagram of the present invention. Detailed Implementation

[0014] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0015] First implementation method: Please see Figure 1 A safety door lock control circuit based on a laser welding machine and a cleaning machine includes a laser enable control circuit, a laser enable status indication circuit, and an alarm signal detection and deactivation circuit. The laser enable control circuit includes a relay K1, the laser enable status indication circuit includes a green light LP1, a red light LP2, and a buzzer LS1, and the alarm signal detection and deactivation circuit includes a door lock switch K3 and a switch button K2. The switch button K2 is used for alarm reset and enable restart.

[0016] This application also includes three sets of contact combinations, namely contact combination one, contact combination two and contact combination three. Contact combination one includes contact E, contact D and contact F, contact combination two includes contact H, contact I and contact G, and contact combination three includes contact A, contact B and contact C.

[0017] The application process includes the following three stages: 1. Under normal conditions, when the machine is turned on and the protective room door is closed, the door lock switch K3 is closed. The operator needs to press the switch button K2 to energize the relay K1 coil. The three sets of contacts are connected as follows: Contacts B and C are connected, keeping the relay coil energized and locked in the conducting state. At the same time, the green light LP1 is lit (normal); Contacts H and I are connected, closing the laser enable contact (JK), and its enable switch circuit can work normally; Contacts E and D are disconnected, and the alarm indicator light (i.e., the red light LP2) and the buzzer LS1 are not working.

[0018] 2. When the safety door is opened during operation, the door lock switch K3 is disconnected, the relay K1 coil is de-energized, the green light LP1 goes out, and contacts H and I are disconnected. This causes the laser enable contact (JK) to disconnect, the enable circuit to stop working, and the laser to stop outputting. At the same time, contacts E and D are connected, the alarm indicator light (i.e., the red light LP2) lights up, and the buzzer LS1 is activated, emitting an audible and visual alarm signal.

[0019] 3. When the safety door is closed again and the lock switch K3 is closed, the laser will still not work immediately. The operator needs to manually press the switch button K2 after confirming that the person who accidentally entered has left, so that the relay K1 coil is energized and re-engaged. The laser enable contact (JK) will then be activated, the alarm will be cleared, and normal operation will resume.

[0020] The above process effectively ensures the safe operation of laser welding and cleaning machines, and reduces the likelihood of false alarms or missed alarms.

[0021] The above description is merely a preferred embodiment of this utility model; it encompasses all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be covered within the protection scope of this utility model.

Claims

1. A safety door lock control circuit based on a laser welding machine and a cleaning machine, characterized in that: It includes a laser enable control circuit, a laser enable status indication circuit, and an alarm signal detection and deactivation circuit. The laser enable control circuit includes a relay K1. The laser enable status indication circuit includes a green light LP1, a red light LP2, and a buzzer LS1. The alarm signal detection and deactivation circuit includes a door lock switch K3 and a switch button K2. The switch button K2 is used for alarm reset and enable restart.

2. The safety door lock control circuit based on a laser welding machine and a cleaning machine according to claim 1, characterized in that: It also includes three sets of contact combinations, namely contact combination one, contact combination two, and contact combination three.

3. The safety door lock control circuit based on a laser welding machine and a cleaning machine according to claim 2, characterized in that: The contact assembly includes contact E, contact D, and contact F.

4. A safety door lock control circuit based on a laser welding machine and a cleaning machine according to claim 2, characterized in that: The second contact assembly includes contact H, contact I, and contact G.

5. A safety door lock control circuit based on a laser welding machine and a cleaning machine according to claim 2, characterized in that: The contact assembly three includes contact A, contact B, and contact C.

6. A safety door lock control circuit based on a laser welding machine and a cleaning machine according to claim 1, characterized in that: When the protective room door is closed, the door lock switch K3 is in the closed state.

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