Welding counting device

Abstract

The utility model discloses a welding counting device which is characterized in that the welding counting device comprises an air switch, a switching power supply, a counting relay, an electromagnetic valve, a mainboard relay and a travel switch, the air switch is used for controlling connection and disconnection of a circuit, and the switching power supply is used for providing 24V power for the counting relay and the electromagnetic valve; the counting relay is used for recording welding ending signals, and the electromagnetic valve is used for controlling the gas circuit switch to be switched on. The utility model relates to the technical field of welding counting mistake proofing equipment, in particular to a welding counting device, which is characterized in that a relay module is additionally arranged on a welding gun controller main board, welding ending signals are accurately counted through a counting relay, the welding times can be strictly controlled, and the welding quality is improved. And product welding quality defects caused by insufficient or excessive welding quantity are avoided.

Description

Technical Field

[0001] This utility model relates to the field of welding technology and equipment technology, and more specifically, to a welding counting device. Background Technology

[0002] In automotive body shops, welding is the main method for assembling car bodies, and its welding quality directly determines the quality of the car body. Since low-end assembly lines rely heavily on manual welding, manual welding operations are prone to missed welds. Therefore, interlocking weld point counting with tooling can prevent missed welds at manual welding stations, which is of great practical significance for improving welding quality. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a welding counting device, which adds a relay module to the main board of the welding torch controller. By accurately counting the welding completion signal through the counting relay, the number of welding operations can be strictly controlled, avoiding product welding quality defects caused by insufficient or excessive welding operations.

[0004] A welding counting device, characterized in that it includes a welding torch, an air switch, a switching power supply, a counting relay, a solenoid valve, a main board relay, and a limit switch;

[0005] The welding torch is electrically connected to the controller, the controller is electrically connected to the main board relay, the main board relay is electrically connected to the counting relay, the counting relay is electrically connected to the limit switch and the solenoid valve, and an auxiliary normally open contact of the counting relay is provided between the solenoid valve and the counting relay.

[0006] The counting relay is electrically connected to the switching power supply, the switching power supply is electrically connected to the air switch, and the air switch is electrically connected to the power supply.

[0007] The solenoid valve is electrically connected to the pneumatic circuit switch, and the pneumatic circuit switch is electrically connected to the mechanical interlocking device.

[0008] As a further limitation of this technical solution, the air switch is used to control the on and off of the circuit, the switching power supply is used to provide 24V power to the counting relay and the solenoid valve, the counting relay is used to record the welding completion signal, the solenoid valve is used to control the conduction of the air circuit switch, the main board relay is used to receive the welding completion signal from the welding controller main board, and the limit switch is used to trigger and reset the counting relay when the mechanical device is opened.

[0009] As a further limitation of this technical solution, the counting relay can control the closing of the auxiliary normally open contact to drive the solenoid valve to work.

[0010] As a further limitation of this technical solution, it also includes a mechanical interlocking device, which is used to clamp and fix the workpiece.

[0011] As a further limitation of this technical solution, the limit switch is triggered when the mechanical interlocking device is opened to automatically reset the counting relay.

[0012] As a further limitation of this technical solution, the controller controls the air switch, switching power supply, counting relay, solenoid valve, mechanical interlocking device, main board relay and limit switch.

[0013] As a further limitation of this technical solution, the welding completion signal is emitted by the welding torch.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are:

[0015] A relay module is added to the main board of the welding torch controller. The welding torch completes the welding signal and transmits it to the counter relay to activate the solenoid valve, thereby automatically controlling the mechanical interlocking device. Different welding point numbers can be set through the counter relay (BM8300C digital multimeter) to adapt to different welding tasks and effectively control quality problems such as missed welds that occur in manual welding.

[0016] The combined use of limit switches and counting relays in the device ensures that the counting relays are automatically reset when the mechanical device is opened, thus avoiding operational errors caused by human negligence.

[0017] The device can automatically record the welding completion signal and drive the solenoid valve to work when the preset value is reached, automatically opening the mechanical interlock device and releasing the workpiece, thereby reducing the waiting time for welding operations and improving production efficiency. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. Obviously, the drawings described below are merely some embodiments of this utility model, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] In the diagram: 1. Air switch; 2. Switching power supply; 3. Counting relay; 4. Counting relay auxiliary normally open contact; 5. Solenoid valve; 6. Pneumatic circuit switch; 7. Mechanical interlock device; 8. Limit switch; 9. Welding completion signal; 10. Main board relay. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 The present invention will be further described in terms of the embodiments and implementation methods.

[0022] A welding counting device includes a welding torch, a controller, an air switch 1, a switching power supply 2, a counting relay 3, a solenoid valve 5, a main board relay 10, and a limit switch 8;

[0023] The welding torch is electrically connected to the controller, the controller is electrically connected to the main board relay 10, the main board relay 10 is electrically connected to the counting relay 3, the counting relay 3 is electrically connected to the limit switch 8 and the solenoid valve 5, and an auxiliary normally open contact 4 of the counting relay is provided between the solenoid valve 5 and the counting relay 3.

[0024] The counting relay 3 is electrically connected to the switching power supply 2, the switching power supply 2 is electrically connected to the air switch 1, and the air switch 1 is electrically connected to the power supply.

[0025] A maximum counting value is set for the counting relay 3. When the count of the counting relay 3 reaches the set value, the controller can control the auxiliary normally open contact 4 to close, so as to drive the solenoid valve 5 to work.

[0026] Solenoid valve 5 is electrically connected to pneumatic switch 6, and pneumatic switch 6 is electrically connected to mechanical interlocking device 7. Mechanical interlocking device 7 is used to clamp and fix the workpiece.

[0027] Limit switch 8 is triggered when mechanical interlock device 7 is opened to automatically reset counting relay 3.

[0028] Specifically, the mechanical interlocking device 7 mainly relies on mechanical principles to prevent the execution of specific actions through the interaction or restriction of physical components. For example, the mechanical interlocking device 7 can be a clamp.

[0029] Air switch 1 is used to control the on / off state of the circuit; switching power supply 2 is used to provide 24V power to counting relay 3 and solenoid valve 5; counting relay 3 is used to record welding completion signal 9; solenoid valve 5 is used to control the conduction of air circuit switch 6; main board relay 10 is used to receive welding completion signal from welding controller main board; limit switch 8 is used to trigger and reset counting relay 3 when mechanical device is opened.

[0030] Preferably, the counting relay 3 uses a BM8300C digital multimeter, and the main board relay 10 collects the welding completion signal 9 and outputs it to the counting relay 3. When the welding completion signal 9 reaches a preset value, the coil of the counting relay 3 is energized, driving the solenoid valve 5 to work, thereby opening the air circuit switch 6 and opening the mechanical interlock device 7 to release the workpiece. A set of normally open auxiliary contacts 4 of the limit switch 8 are connected to the reset terminal of the counting relay 3. When the mechanical device is opened, the limit switch 8 is triggered, automatically resetting the counting relay 3 and entering the next welding counting cycle.

[0031] In this embodiment, the air switch 1 and the switching power supply 2 provide a stable 24V power supply for the entire system, ensuring the normal operation of components such as the counting relay 3 and the solenoid valve 5.

[0032] In this embodiment, the motherboard relay 10 is electrically connected to the controller, and the controller is electrically connected to the welding gun. The controller collects the signal that the welding gun has completed welding. Whenever a weld point is completed, the welding gun sends a signal to the controller.

[0033] In this embodiment, after the controller acquires the welding completion signal 9, it transmits the signal to the counting relay 3 (BM8300C digital multimeter) through the motherboard relay 10.

[0034] A welding value is set for the counting relay 3. After receiving the signal, the counting relay 3 counts the welding completion signals. When the number of welding completion signals recorded by the counting relay 3 reaches the preset count value, the coil of the counting relay 3 is energized. After the coil of the counting relay 3 is energized, when the welding count of the counting relay 3 reaches the set value, the controller controls the auxiliary normally open contact 4 to close, driving the solenoid valve 5 to work.

[0035] The controller controls the air switch 1, switching power supply 2, counting relay 3, solenoid valve 5, mechanical interlock device 7, main board relay 10, and limit switch 8.

[0036] The welding completion signal 9 is issued by the welding torch.

[0037] In this embodiment, after the solenoid valve 5 is activated, the air circuit switch 6 is turned on, so that the air pressure can reach the mechanical interlock device 7 through the air circuit, causing it to open automatically and release the workpiece. When the mechanical interlock device 7 is opened, it will trigger the counting relay auxiliary normally open contact 4 of the limit switch 8 to close. The closing signal of the limit switch 8 is transmitted to the counting relay 3, causing it to automatically reset and prepare to enter the next welding counting cycle.

[0038] The operator sets the number of welding points using the counting relay 3 (BM8300C digital multimeter), starts the welding controller, and begins the welding operation. The controller collects the welding end signal 9 from the welding torch. The counting relay 3 continuously monitors the welding end signal 9 and counts the points. Once the number of welding points reaches the preset value, the counting relay 3 drives the solenoid valve 5 to work, automatically opening the mechanical interlock device 7. After the mechanical interlock device 7 is opened, the limit switch 8 triggers the counting relay 3 to reset, preparing for the next welding cycle.

[0039] In practical use, first, connect the air switch 1 to the power supply and ensure it is in the off state. Then, connect the circuits between the switching power supply 2, the counting relay 3, the solenoid valve 5, the main board relay 10, the limit switch 8, and other related components. For example, the welding torch is electrically connected to the controller, the controller is electrically connected to the main board relay 10, the main board relay 10 is electrically connected to the counting relay 3, the counting relay 3 is electrically connected to the limit switch 8 and the solenoid valve 5, etc. Correctly set the auxiliary normally open contact 4 of the counting relay between the solenoid valve 5 and the counting relay 3. At the same time, the solenoid valve 5 is connected to the air circuit switch 6, and the air circuit switch 6 is connected to the mechanical interlock device 7 to ensure that the air circuit connection is well sealed and leak-free.

[0040] Select a suitable counting relay 3, such as a BM8300C digital multimeter, and set a maximum counting value (welding value) for the counting relay 3 according to the actual welding process requirements. This setting value can be set through the setting button on the counting relay 3 itself.

[0041] Turn on the air switch 1 to power the entire circuit. The switching power supply 2 starts working, providing a stable 24V power supply to the counting relay 3 and the solenoid valve 5. During welding operations, the welding torch emits a welding completion signal 9 after each weld point is completed. After the controller collects the welding completion signal 9 emitted by the welding torch, it transmits the signal to the counting relay 3 (BM8300C digital multimeter) through the main board relay 10. After receiving the signal, the counting relay 3 counts the welding completion signals. During the counting process, its internal counting mechanism accumulates the count according to the received signals one by one. When the counting relay 3 records the welding completion signal... When the number of completed signals reaches the preset count value, the coil of the counting relay 3 is energized. At this time, due to the energization of the coil of the counting relay 3, its auxiliary normally open contact 4 closes, thereby driving the solenoid valve 5 to work. After the solenoid valve 5 works, the air circuit switch 6 is turned on, so that the air pressure can reach the mechanical interlock device 7 through the air circuit. The mechanical interlock device 7 automatically opens under the action of air pressure, releasing the workpiece. When the mechanical interlock device 7 opens, it will trigger the limit switch 8 to close and reset. The closing signal of the limit switch 8 is transmitted to the reset terminal of the counting relay 3, so that the counting relay 3 automatically resets, its count returns to zero, and it is ready to enter the next welding counting cycle.

[0042] Specifically, during the operation of the entire welding counting device, all components work together. Through the controller's effective control of the air switch 1, switching power supply 2, counting relay 3, solenoid valve 5, mechanical interlock device 7, main board relay 10, and limit switch 8, the welding counting and tooling interlock error prevention function is realized, ensuring the accuracy and stability of the welding process and avoiding product quality problems caused by incorrect welding counts or improper tooling operation.

[0043] The above-disclosed embodiments are merely specific examples of this utility model. However, this utility model is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A welding counting device, characterized in that, It includes a welding torch, a controller, an air switch (1), a switching power supply (2), a counting relay (3), a solenoid valve (5), a main board relay (10), and a limit switch (8); The welding torch is electrically connected to the controller, the controller is electrically connected to the main board relay (10), the main board relay (10) is electrically connected to the counting relay (3), the counting relay (3) is electrically connected to the limit switch (8) and the solenoid valve (5), and an auxiliary normally open contact (4) of the counting relay is provided between the solenoid valve (5) and the counting relay (3). The counting relay (3) is electrically connected to the switching power supply (2), the switching power supply (2) is electrically connected to the air switch (1), and the air switch (1) is electrically connected to the power supply. The solenoid valve (5) is electrically connected to the pneumatic switch (6), and the pneumatic switch (6) is electrically connected to the mechanical interlock device (7).

2. The welding counting device according to claim 1, characterized in that, The air switch (1) is used to control the on / off state of the circuit. The switching power supply (2) is used to provide 24V power to the counting relay (3) and the solenoid valve (5). The counting relay (3) is used to record the welding completion signal (9). The solenoid valve (5) is used to control the conduction of the air circuit switch (6). The main board relay (10) is used to receive the welding completion signal (9) from the welding controller main board. The limit switch (8) is used to trigger and reset the counting relay (3) when the mechanical device is opened.

3. The welding counting device according to claim 2, characterized in that, The counting relay (3) can control the closing of the auxiliary normally open contact (4) to drive the solenoid valve (5) to work.

4. The welding counting device according to claim 3, characterized in that, It also includes a mechanical interlocking device (7), which is used to clamp and fix the workpiece.

5. The welding counting device according to claim 4, characterized in that, The limit switch (8) is triggered when the mechanical interlock device (7) is opened to automatically reset the counting relay (3).

6. The welding counting device according to claim 5, characterized in that, The controller controls the air switch (1), switching power supply (2), counting relay (3), solenoid valve (5), mechanical interlock device (7), main board relay (10) and limit switch (8).

7. The welding counting device according to claim 2, characterized in that, The welding completion signal (9) is emitted by the welding torch.

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