A spot welder monitoring system and a spot welding device

Abstract

An embodiment of the present invention discloses a spot welder monitoring system and a spot welding device. The system includes: a counting module for monitoring the number of spot welds of at least one spot welder and generating a monitoring signal corresponding to the spot welder; a first switching module for adjusting an output indication control signal according to the received corresponding monitoring signal; and at least one indication module for adjusting its own indication state according to the received corresponding indication control signal. The spot welder monitoring system and the spot welding device provided by the embodiment of the present invention are beneficial to effectively improving the spot welding quality and the reliability of spot welding of the spot welder.

Description

Technical Field

[0001] Embodiments of the present invention relate to welding technology, and particularly to a spot welder monitoring system and a spot welding device. Background Art

[0002] In the machinery manufacturing industry, some sheet metal parts need to be subjected to spot welding process operations to bond parts that are not originally together, playing a connecting role. However, too large or too small electrode diameters during the spot welding process will cause welding defects, posing serious quality and safety hazards to product forming. Therefore, regular grinding must be carried out at a specified frequency.

[0003] Currently, in existing spot welding, during the actual welding process, due to uncontrollable human factors, problems such as welding detachment caused by failure to grind the electrode in a timely manner and poor welding quality often occur. Summary of the Invention

[0004] The present invention provides a spot welder monitoring system and a spot welding device, which are beneficial to improving the spot welding quality and reliability of the spot welder.

[0005] In a first aspect, embodiments of the present invention provide a spot welder monitoring system, including:

[0006] A counting module, which is used to monitor the number of spot welds of at least one spot welder and generate a monitoring signal corresponding to the spot welder;

[0007] A first switch module, which is used to adjust the output indication control signal according to the received corresponding monitoring signal;

[0008] At least one indication module, which is used to adjust its own indication state according to the received corresponding indication control signal.

[0009] Optionally, the first switch module includes at least one first switch sub-module. The first switch sub-module includes a first relay and a first changeover switch. The first relay is used to adjust the output first changeover signal according to the received corresponding monitoring signal, and the first changeover switch is used to adjust the output indication control signal according to the received first changeover signal.

[0010] Optionally, the first input end of the first relay is electrically connected to the corresponding monitoring signal output end of the counting module, the second input end of the first relay accesses a first set power signal, the output end of the first relay outputs a first changeover signal, and the first relay is used to adjust the output first changeover signal according to the input signals of its own first input end and second input end;

[0011] The first switching control terminal of the first switching switch is electrically connected to the output terminal of the first relay. The first switching switch is configured to connect the power input terminal of the first switching switch to the indicating terminal of the first switching switch or connect the power input terminal of the first switching switch to the suspended terminal according to the first switching signal input at the first switching control terminal. The indicating terminal is electrically connected to the corresponding indicating module.

[0012] Optionally, the indicating module includes at least one of a sound indicating module and a display indicating module.

[0013] Optionally, the spot welder monitoring system further includes:

[0014] At least one second switching module and at least one foot switch. The second switching module is configured to adjust the output start control signal according to the closed state of the corresponding foot switch to control the working state of the corresponding spot welder.

[0015] Optionally, the second switching module includes a second relay and at least one second switching switch. The second switching switches are arranged in one-to-one correspondence with the spot welding terminals of the spot welder. The second relay is configured to output a second switching signal.

[0016] The second switching switch is configured to adjust the output start control signal according to the received second switching signal.

[0017] Optionally, the second relay is configured to adjust the output switching signal according to the closed state of the corresponding foot switch.

[0018] The first switch sub-module further includes a third switching switch, which is configured to adjust the connection state of the first end of the foot switch according to the received first switching signal.

[0019] The first input terminal of the second relay is connected to a second set power signal. The second input terminal of the second relay is electrically connected to the second end of the foot switch. The output terminal of the second relay outputs a second switching signal. The second relay is configured to adjust the output second switching signal according to the input signals at its own first input terminal and second input terminal.

[0020] The second switching control terminal of the second switching switch is electrically connected to the output terminal of the second relay. The second switching switch is configured to connect the first spot welding start terminal of the second switching switch to the second spot welding start terminal of the second switching switch or connect the first spot welding start terminal of the second switching switch to the suspended terminal according to the second switching signal input at the second switching control terminal.

[0021] Optionally, the second relay is configured to adjust the output switching signal according to the closed state of the corresponding foot switch and the received corresponding monitoring signal.

[0022] The first input terminal of the second relay is electrically connected to the corresponding monitoring signal output terminal of the counting module. The second input terminal of the second relay is electrically connected to the second terminal of the foot switch. The first terminal of the foot switch is connected to a first set power signal. The output terminal of the second relay outputs a second switching signal. The second relay is configured to adjust the output second switching signal according to the input signals of its own first input terminal and second input terminal;

[0023] The second switching control terminal of the second switching switch is electrically connected to the output terminal of the second relay. The second switching switch is configured to connect the first spot welding start terminal of the second switching switch to the second spot welding start terminal of the second switching switch or connect the first spot welding start terminal of the second switching switch to the floating terminal according to the second switching signal input to the second switching control terminal.

[0024] Optionally, the counting module is configured to monitor the number of spot welds of the corresponding spot welder according to the connection state of the second switching switch.

[0025] Optionally, the first spot welding start terminal of the second switching switch is connected to a second set power signal, and the second spot welding start terminal of the second switching switch is electrically connected to the corresponding counting signal terminal of the counting module.

[0026] In a second aspect, an embodiment of the present invention further provides a spot welding device, including at least one spot welder and the spot welder monitoring system as described in the first aspect. The counting signal terminal of the counting module is electrically connected to the corresponding spot welder. The counting module is configured to monitor the number of spot welds of the corresponding spot welder according to the input signal of the counting signal terminal and generate a monitoring signal for the corresponding spot welder.

[0027] Optionally, the counting module and the spot welder are independently provided.

[0028] An embodiment of the present invention provides a spot welder monitoring system and a spot welding device. The spot welder monitoring system includes a counting module, a first switching module, and at least one indicating module. The counting module monitors the number of spot welds of at least one spot welder and generates a monitoring signal for the corresponding spot welder. The first switching module adjusts the output indication control signal according to the received corresponding monitoring signal. The indicating module adjusts its own indication state according to the received corresponding indication control signal. The spot welder monitoring system and the spot welding device provided by the embodiment of the present invention can monitor the number of spot welds of the spot welder, can give an indication when the number of spot welds reaches a preset value, and can timely grind the electrodes of the welder to ensure the quality of spot welding, which is beneficial to effectively improving the quality of spot welding and the reliability of spot welding of the spot welder. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a structural block diagram of a spot welder monitoring system provided by an embodiment of the present invention;

[0030] Figure 2 It is a structural block diagram of another spot welder monitoring system provided by an embodiment of the present invention;

[0031] Figure 3 It is a schematic structural diagram of a spot welder monitoring system provided by an embodiment of the present invention;

[0032] Figure 4 It is a structural block diagram of another spot welder monitoring system provided by an embodiment of the present invention;

[0033] Figure 5 It is a structural block diagram of another spot welder monitoring system provided by an embodiment of the present invention;

[0034] Figure 6 It is a schematic structural diagram of another spot welder monitoring system provided by an embodiment of the present invention;

[0035] Figure 7 It is a structural block diagram of a spot welding device provided by an embodiment of the present invention;

[0036] Figure 8 It is a schematic structural diagram of a spot welding device provided by an embodiment of the present invention. Specific embodiments

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only parts related to the present invention are shown in the accompanying drawings, rather than all structures.

[0038] This embodiment provides a spot welder monitoring system and a spot welding device. This embodiment can be applied to fields such as devices that require spot welding operations, Figure 1 It is a structural block diagram of a spot welder monitoring system provided by an embodiment of the present invention. Refer to Figure 1 , this system includes: a counting module 10, a first switch module 20, and at least one indicating module 30, Figure 1 Only one indicating module 30 is shown exemplarily. The counting module 10 is used to monitor the number of spot welds of at least one spot welder and generate a monitoring signal corresponding to the spot welder; the first switch module 20 is used to adjust the output indication control signal according to the received corresponding monitoring signal; the indicating module 30 is used to adjust its own indication state according to the received corresponding indication control signal.

[0039] Specifically, as Figure 1As shown, the counting module 10 monitors the number of spot welds of at least one spot welder and generates a monitoring signal corresponding to the spot welder. The first switch module 20 adjusts the output indication control signal according to the received corresponding monitoring signal, and the indication module 30 adjusts its own indication state according to the received corresponding indication control signal.

[0040] Exemplarily, the counting module 10 can monitor the number of spot welds of multiple spot welders and can generate monitoring signals corresponding to each spot welder. The monitoring signals contain the information of the number of spot welds of the corresponding spot welder. It can be set that the first switch module 20 adjusts the output indication control signal according to the monitoring signal generated when the number of spot welds of a certain spot welder monitored by the counting module 10 reaches a preset value, so that the indication module 30 issues a corresponding indication according to the received corresponding indication control signal, prompting the staff whether the number of spot welds of the spot welder has reached the upper limit, and grinding the electrodes of the spot welder in time to ensure the spot welding quality.

[0041] The spot welder monitoring system provided in this embodiment includes a counting module, a first switch module and at least one indication module. The counting module monitors the number of spot welds of at least one spot welder and generates a monitoring signal corresponding to the spot welder. The first switch module adjusts the output indication control signal according to the received corresponding monitoring signal, and the indication module adjusts its own indication state according to the received corresponding indication control signal. The spot welder monitoring system provided in this embodiment can monitor the number of spot welds of the spot welder, issue an indication when the number of spot welds reaches a preset value, and grind the electrodes of the welder in time to ensure the spot welding quality, which is beneficial to effectively improving the spot welding quality and reliability of the spot welder.

[0042] Figure 2 is the structural block diagram of another spot welder monitoring system provided by an embodiment of the present invention. On the basis of the above technical solution, optionally, in combination with Figure 1 and Figure 2 , the first switch module 20 includes at least one first switch sub-module 21. Figure 2 Only one first switch sub-module 21 is exemplarily shown. The first switch sub-module 21 includes a first relay 22 and a first switching switch 23. The first relay 22 is used to adjust the output first switching signal according to the received corresponding monitoring signal, and the first switching switch 23 is used to adjust the output indication control signal according to the received first switching signal.

[0043] Specifically, the first switching switch 23 can be a single-pole double-throw switch. When the number of spot welding operations of the spot welder corresponding to the monitoring signal received by the first relay 22 does not reach the preset value, the first relay 22 adjusts the output first switching signal. For example, the first switching signal is adjusted to a low level. The first switching switch 23 adjusts the output indication control signal according to the received first switching signal. For example, the indication control signal is adjusted to a low level, so that the path between the first switching switch 23 and the indication module 30 is not conducting, and the indication module 30 does not give an indication. When the number of spot welding operations of the spot welder corresponding to the monitoring signal received by the first relay 22 reaches the preset value, the first relay 22 adjusts the output first switching signal. For example, the first switching signal is adjusted to a high level. The first switching switch 23 adjusts the output indication control signal according to the received first switching signal. For example, the indication control signal is adjusted to a high level, so that the path between the first switching switch 23 and the indication module 30 is conducting, so that the indication module 30 adjusts its own indication state according to the received corresponding indication control signal and gives an indication, which can prompt relevant personnel that the number of spot welding operations has reached the upper limit and grind the electrodes of the spot welder in time to ensure the quality of spot welding.

[0044] Figure 3 is a schematic structural diagram of a spot welder monitoring system provided by an embodiment of the present invention. Combining Figure 1 、 Figure 2 and Figure 3 , the first input terminal A1 of the first relay 22 is electrically connected to the corresponding monitoring signal output terminal A2 of the counting module 10. The second input terminal B1 of the first relay 22 is connected to the first set power supply signal V1. The output terminal B2 of the first relay 22 outputs the first switching signal. The first relay 22 is configured to adjust the output first switching signal according to the input signals of its own first input terminal A1 and second input terminal B1. The first switching control terminal B3 of the first switching switch 23 is electrically connected to the output terminal B2 of the first relay 22. The first switching switch 23 is configured to connect the power input terminal C1 of the first switching switch 23 to the indication terminal C2 of the first switching switch 23 or connect the power input terminal C1 of the first switching switch 23 to the suspended terminal C3 of the first switching switch 23 according to the first switching signal input by the first switching control terminal B3. The indication terminal C2 is electrically connected to the corresponding indication module 30.

[0045] Specifically, the power input terminal C1 of the first switching switch 23 is connected to the second set power signal V2, the second input terminal B1 of the first relay 22 is connected to the first set power signal V1, the first set power signal V1 can be a ground signal, and the levels of the first set power signal V1 and the second set power signal V2 are different; when the number of spot welding operations of the spot welder corresponding to the monitoring signal received by the first relay 22 does not reach the preset value, the first relay 22 adjusts the output first switching signal, for example, the adjusted output first switching signal is at a low level. At this time, the power input terminal C1 of the first switching switch 23 is connected to the suspended terminal C3 of the first switching switch 23, that is, the path between the first switching switch 23 and the indication module 30 is not conducting, and the indication module 30 does not give an indication; when the number of spot welding operations of the spot welder corresponding to the monitoring signal received by the first relay 22 reaches the preset value, the first relay 22 adjusts the output first switching signal, for example, the adjusted output first switching signal is at a high level. At this time, the power input terminal C1 of the first switching switch 23 is connected to the indication terminal C2 of the first switching switch 23, that is, the path between the first switching switch 23 and the indication module 30 is conducting, so that the indication module 30 gives an indication, which can prompt relevant personnel that the number of spot welding operations has reached the upper limit and grind the electrodes of the spot welder in time to ensure the quality of spot welding.

[0046] Optionally, the indication module 30 includes at least one of a sound indication module 31 and a display indication module 32.

[0047] Exemplarily, the sound indication module 31 may include a buzzer H. For example, the buzzer H emits a buzzing sound indicating that the number of spot welding operations of the spot welder has reached the upper limit. The display indication module 32 may include an indicator light L. For example, the indicator light L being on indicates that the number of spot welding operations of the spot welder has reached the upper limit, so as to remind relevant personnel to grind the electrodes of the spot welder in time.

[0048] Specifically, when the number of spot welding operations of the spot welder corresponding to the monitoring signal received by the first relay 22 does not reach the preset value, the first relay 22 controls the power input terminal C1 of the first switching switch 23 to be connected to the suspended terminal C3 according to the monitoring signal of the counting module 10, that is, there is no connection between the first switching switch 23 and the indicator light L, and the indicator light L is not lit and gives no indication; when the number of spot welding operations of the spot welder reaches the preset value, the counting module 10 powers on the first relay 22, and the first relay 22 controls the connection between the first switching switch 23 and the indicator light L, that is, the grounding circuit where the first switching switch 23 and the indicator light L are located is conducting, and the indicator light L is lit to prompt relevant personnel to grind the electrodes of the spot welder in time to ensure the quality of spot welding.

[0049] Figure 4 It is the structural block diagram of another spot welder monitoring system provided by an embodiment of the present invention. Optionally, refer to Figure 4The spot welding machine monitoring system further includes at least one second switch module 40 and at least one foot switch 50. The second switch module 40 is used to adjust the output start control signal according to the closed state of the corresponding foot switch 50 to control the working state of the corresponding spot welding machine.

[0050] Specifically, when the foot switch 50 is closed, the second switch module 40 can adjust the output start control signal to control the corresponding spot welding machine to perform spot welding operation. When the foot switch 50 is disconnected, the second switch module 40 can adjust the output start control signal to control the corresponding spot welding machine to stop spot welding operation.

[0051] Optionally, the second switch module 40 includes a second relay 41 and at least one second switch 42, and the second switch 42 is set in one-to-one correspondence with the spot welding end of the spot welding machine, that is, as many second switches 42 are set as there are spot welding ends, Figure 4 Only one second switch 42 is shown by way of example. The second relay 41 is used to output a second switching signal. The second switch 42 is used to adjust the output start control signal according to the received second switching signal.

[0052] Specifically, when the foot switch 50 is closed, the second relay 41 outputs a second switching signal, such as outputting a high-level second switching signal, and the second switching switch 42 adjusts the output start control signal according to the received second switching signal, such as adjusting the start control signal to a high level, and controls the corresponding spot welding machine to perform spot welding when the start control signal is a high level; when the foot switch 50 is disconnected, the second relay 41 outputs a second switching signal, such as outputting a low-level second switching signal, and the second switching switch 42 adjusts the output start control signal according to the received second switching signal, such as adjusting the start control signal to a low level, and can control the corresponding spot welding machine to stop spot welding.

[0053] Combination Figure 2 and Figure 4, the second relay 41 is used to adjust the output switching signal according to the closed state of the corresponding foot switch 50; the first switch sub-module 21 further includes a third switching switch 24, and the third switching switch 24 is used to adjust the connection state of the first end D1 of the foot switch according to the received first switching signal; the first input end D2 of the second relay 41 is connected to the second set power supply signal V2, the second input end D3 of the second relay 41 is electrically connected to the second end D4 of the foot switch 50, and the output end E1 of the second relay 41 outputs a second switching signal. The second relay 41 is used to adjust the output second switching signal according to the input signals of its own first input end D2 and second input end D3; the second switching control end E2 of the second switching switch 42 is electrically connected to the output end E1 of the second relay 41, and the second switching switch 42 is used to connect the first spot welding start end F1 of the second switching switch 42 to the second spot welding start end F2 of the second switching switch 42 or connect the first spot welding start end F1 of the second switching switch 42 to the floating end F3 of the second switching switch 42 according to the second switching signal input by the second switching control end E2.

[0054] Specifically, when the number of spot welding operations of the spot welder has not reached the preset value, the third switching switch 24 adjusts the connection state of the first end D1 of the foot switch according to the received first switching signal. For example, when the third switching switch 24 is adjusted to be conductive to the foot switch 50, the second relay 41 adjusts the output second switching signal according to the input signals of its own first input end D2 and second input end D3. For example, when the second switching signal is adjusted to a high level, the first spot welding start end F1 of the second switching switch 42 is connected to the second spot welding start end F2 of the second switching switch 42 at this time, so that the spot welder performs spot welding operations; when the number of spot welding operations of the spot welder reaches the preset value, the third switching switch 24 adjusts the connection state of the first end D1 of the foot switch according to the received first switching signal. For example, when the third switching switch 24 is adjusted to be non-conductive to the foot switch 50, the second relay 41 adjusts the output second switching signal according to the input signals of its own first input end D2 and second input end D3. For example, when the second switching signal is adjusted to a low level, the second switching switch 42 connects the first spot welding start end F1 of the second switching switch 42 to the floating end F3 of the second switching switch 42 at this time, so that the spot welder stops spot welding operations, preventing the problem of poor spot welding quality caused by the electrodes not being ground in time.

[0055] Combined Figure 3 and Figure 4, specifically, the second relay 41 can be connected to the second set power supply signal V2 through the resistor R1. The first spot welding start end F1 of the second switch 42 also forms a loop with the second spot welding start end F2 through the spot welder port 60. The first spot welding start end F1 of the second switch 42 is connected to the second set power supply signal V2 through the resistor R2. The first input end J1 of the third relay 25 is electrically connected to the corresponding monitoring signal output end A3 of the counting module 10. The second input end J2 of the third relay 25 is connected to the first set power supply signal V1. The output end I1 of the third relay 25 outputs a third switching signal. The third relay 25 is used to adjust the output third switching signal according to the input signals of its first input end J1 and second input end J2. The power input end H1 of the fourth switch 26 is connected to the second set power supply signal V2. The first switching control end I2 of the fourth switch 26 is electrically connected to the output end I1 of the third relay 25. The fourth switch 26 is used to connect the power input end H1 of the fourth switch 26 to the indicating end H2 or connect the power input end H1 of the fourth switch 26 to the suspended end H3 according to the third switching signal input by the first switching control end I2. The indicating end H2 is electrically connected to the corresponding indicating module 30.

[0056] When the number of spot welds of the spot welder does not reach the preset value, the first relay 22 controls the third switch 24 to be connected to the ground wire according to the monitoring signal of the counting module 10. The foot switch 50 is closed, and the second relay 41 is powered on to control the first spot welding start end F1 of the second switch 42 to be connected to the second spot welding start end F2 of the second switch 42, so that the spot welder performs spot welding operations. The first relay 22 controls the first switch 23 and the loop where the indicator light L is located to be non-conductive. The third relay 25 controls the power input end H1 of the fourth switch 26 to be connected to the suspended end H3 of the fourth switch 26. The power input end H1 of the fourth switch 26 is not connected to the indicating end H2 of the fourth switch 26, that is, the fourth switch 26 and the loop where the buzzer H is located are non-conductive, and neither the indicator light L nor the buzzer H gives an indication. When the number of spot welds of the spot welder reaches the preset value, the counting module 10 powers on the first relay 22 and the third relay 25. The first relay 22 controls the third switch 24 to be disconnected from the ground wire. At this time, the loop where the third switch 24 and the second relay 41 are located is powered off. The second relay 41 is powered off to control the first spot welding start end F1 of the second switch 42 to be connected to the suspended end F3 of the second switch 42, so that the spot welder stops spot welding operations. The third relay 25 controls the fourth switch 26 to be connected to the buzzer H. The first relay 22 controls the first switch 23 to be connected to the indicator light L to prompt relevant personnel to grind the electrodes of the spot welder in time through the indicator light L and the buzzer H to ensure the spot welding quality.

[0057] Figure 5 It is a structural block diagram of another spot welder monitoring system provided by an embodiment of the present invention. In combination with Figure 2 and Figure 5 , the second relay 41 is used to adjust the output switching signal according to the closing state of the corresponding foot switch 50 and the received corresponding monitoring signal; the first input end D2 of the second relay 41 is electrically connected to the corresponding monitoring signal output end A4 of the counting module 10, the second input end D3 of the second relay 41 is electrically connected to the second end D4 of the foot switch 50, the first end D1 of the foot switch 50 is connected to the first set power signal V1, and the output end E1 of the second relay 41 outputs a second switching signal. The second relay 41 is used to adjust the output second switching signal according to the input signals of its own first input end D2 and second input end D3; the second switching control end E2 of the second switch 42 is electrically connected to the output end E1 of the second relay 41. The second switch 42 is used to connect the first spot welding start end F1 of the second switch 42 to the second spot welding start end F2 of the second switch 42 or connect the first spot welding start end F1 of the second switch 42 to the floating end F3 of the second switch 42 according to the second switching signal input by the second switching control end E2.

[0058] Specifically, when the number of spot welds of the spot welder has not reached the preset value and the foot switch 50 is closed, the second relay 41 adjusts the output second switching signal, such as adjusting the second switching signal to a high level. At this time, the first spot welding start end F1 of the second switch 42 is connected to the second spot welding start end F2 of the second switch 42, so that the spot welder performs spot welding operations; when the number of spot welds of the spot welder reaches the preset value, the second relay 41 adjusts the output second switching signal, such as adjusting the second switching signal to a low level. At this time, the first spot welding start end F1 of the second switch 42 is connected to the floating end F3 of the second switch 42, so that the spot welder stops spot welding operations, preventing the problem of poor spot welding quality caused by the electrodes not being ground in time.

[0059] Figure 6 It is a structural schematic diagram of another spot welder monitoring system provided by an embodiment of the present invention. In combination with Figure Figure 5 and Figure 6, when the number of spot welding operations of the spot welder corresponding to the monitoring signal received by the first relay 22 has not reached the preset value, the first relay 22 controls the power input terminal C1 of the first switch 23 to be connected to the suspended terminal C3 of the first switch 23 according to the monitoring signal of the counting module 10, that is, the first switch 23 is not connected to the indicator light L, and the indicator light L is not lit and has no indication. The third relay 25 controls the power input terminal H1 of the fourth switch 26 to be connected to the floating terminal H3 of the fourth switch 26 according to the monitoring signal of the counting module, that is, the fourth switch 26 is not connected to the buzzer H, and the buzzer H has no sound indication. When the number of spot welding operations of the spot welder has not reached the preset value and the foot switch 50 is closed, the counting module 10 controls the second relay 41 to be energized, and the second relay 41 controls the first spot welding start terminal F1 of the second switch 42 to be connected to the second spot welding start terminal F2 of the second switch 42, so that the spot welder performs spot welding operations; when the number of spot welding operations of the spot welder reaches the preset value, the counting module 10 de-energizes the second relay 41, and the second relay 41 controls the first spot welding start terminal F1 of the second switch 42 to be connected to the floating terminal F3 of the second switch 42, so that the spot welder stops spot welding operations. The counting module 10 energizes the first relay 22 and the third relay 25. The first relay 22 controls the first switch 23 to be connected to the indicator light L, that is, the first switch 23 conducts with the grounding circuit where the indicator light L is located, and the indicator light L is lit. The third relay 25 controls the fourth switch 26 to be connected to the buzzer H, that is, the fourth switch 26 conducts with the grounding circuit where the buzzer H is located, and the buzzer H emits a sound to prompt relevant personnel to grind the electrodes of the spot welder in time to ensure the spot welding quality.

[0060] Optionally, in combination with Figures 1 to 6 , the counting module 10 is used to monitor the number of spot welding operations of the corresponding spot welder according to the connection state of the second switch 42.

[0061] Specifically, every time the first spot welding start terminal F1 of the second switch 42 is connected to the second spot welding start terminal F2 of the second switch 42, that is, every time the spot welder performs a spot welding operation, the counting module 10 counts once until the count value reaches the preset value. The second switching signal output by the second relay 41 is adjusted to make the first spot welding start terminal F1 of the second switch 42 connected to the floating terminal F3 of the second switch 42. At this time, the spot welder stops spot welding operations, and the counting module 10 stops counting.

[0062] Optionally, the first spot welding start terminal F1 of the second switch 42 is connected to the second set power signal V2, and the second spot welding start terminal F2 of the second switch 42 is electrically connected to the corresponding counting signal terminal G1 of the counting module 10.

[0063] Among them, the first spot welding start terminal F1 of the second switching switch 42 also forms a loop with the second spot welding start terminal F2 through the spot welder port 60. The first spot welding start terminal F1 of the second switching switch 42 is connected to the second set power supply signal V2 through the resistor R2. The counting module 10 is electrically connected to the second spot welding start terminal F2 of the second switching switch 42 through the counting signal terminal G1, so as to monitor the spot welding times of the corresponding spot welder through the second spot welding start terminal F2 of the second switching switch 42 and count the spot welding times of the spot welder. When the first spot welding start terminal F1 of the second switching switch 42 is connected to the second spot welding start terminal F2 of the second switching switch 42 once, the counting module 10 counts once, so as to issue an indication through the indication module 30 when the spot welding times reach the set value, reminding relevant personnel to grind the spot welder in time to ensure the spot welding quality.

[0064] This embodiment also provides a spot welding device. Figure 7 It is a structural block diagram of a spot welding device provided by an embodiment of the present invention. Figure 8 It is a structural schematic diagram of a spot welding device provided by an embodiment of the present invention. Refer to Figure 7 and Figure 8 This device includes at least one spot welder 100 and the spot welder monitoring system 200 as described in the above embodiment. The counting signal terminal G1 of the counting module 10 is electrically connected to the corresponding spot welder 100. The counting module 10 is used to monitor the spot welding times of the corresponding spot welder according to the input signal of the counting signal terminal G1 and generate a monitoring signal for the corresponding spot welder.

[0065] Specifically, the counting signal terminal G1 of the counting module 10 is electrically connected to the corresponding spot welder 100. The spot welding times of the corresponding spot welder 100 can be monitored through the input signal of the counting signal terminal G1 and a monitoring signal for the corresponding spot welder 100 can be generated. When the spot welding times of the spot welder 100 reach the preset value, such as generating a high-level monitoring signal for the corresponding spot welder, the indication control signal is adjusted to a high level through the first switch module, and the indication module can issue an indication according to the high-level indication control signal, prompting relevant personnel that the spot welding times of the spot welder 100 reach the upper limit and taking timely treatment measures such as grinding the electrodes of the spot welder.

[0066] Optionally, the counting module 10 and the spot welder 100 are independently arranged.

[0067] Exemplarily, the counting module 10 and the spot welder 100 can be independently arranged. For example, the counting module 10 is in the spot welder monitoring system 200, and the spot welder monitoring system 200 is separated from the spot welder 100. When the spot welder 100 fails, it will not affect the counting module 10, ensuring the normal monitoring of the spot welder monitoring system 200.

[0068] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A spot welder monitoring system, characterized in that, Including: A counting module for monitoring the number of spot welds of at least one spot welder and generating a monitoring signal corresponding to the spot welder; A first switch module for adjusting the output indication control signal according to the received corresponding monitoring signal; At least one indication module for adjusting its own indication state according to the received corresponding indication control signal; The first switch module adjusts the output indication control signal according to the monitoring signal generated when the number of spot welds of a certain spot welder monitored by the counting module reaches a preset value, so that the indication module gives a corresponding indication according to the received corresponding indication control signal; The first switch module includes at least one first switch sub-module, and the first switch sub-module includes a first relay and a first change-over switch. The first relay is used for adjusting the output first change-over signal according to the received corresponding monitoring signal, and the first change-over switch is used for adjusting the output indication control signal according to the received first change-over signal; The first change-over switch is a single-pole double-throw switch. When the number of spot welds of the spot welder corresponding to the monitoring signal received by the first relay does not reach the preset value, the first relay adjusts the output first change-over signal to adjust the first change-over signal to a low level. The first change-over switch adjusts the output indication control signal to a low level according to the received first change-over signal, so that the path between the first change-over switch and the indication module is not conducted; the indication module does not give an indication; when the number of spot welds of the spot welder corresponding to the monitoring signal received by the first relay reaches the preset value, the first relay adjusts the output first change-over signal to adjust the first change-over signal to a high level. The first change-over switch adjusts the output indication control signal to a high level according to the received first change-over signal, so that the path between the first change-over switch and the indication module is conducted; so that the indication module adjusts its own indication state according to the received corresponding indication control signal and gives an indication to prompt relevant personnel that the number of spot welds reaches the upper limit and grind the electrodes of the spot welder in time; The spot welder monitoring system further includes: at least one second switch module and at least one foot switch. The second switch module is used for adjusting the output start control signal according to the closed state of the corresponding foot switch to control the working state of the corresponding spot welder; The second switch module includes a second relay and at least one second change-over switch. The second change-over switch is arranged in one-to-one correspondence with the spot welding end of the spot welder. The second relay is used for outputting a second change-over signal, and the second change-over switch is used for adjusting the output start control signal according to the received second change-over signal; The second relay is used for adjusting the output change-over signal according to the closed state of the corresponding foot switch; the first switch sub-module further includes a third change-over switch, and the third change-over switch is used for adjusting the connection state of the first end of the foot switch according to the received first change-over signal; Alternatively, the second relay is configured to adjust the output switching signal according to the closed state of the corresponding foot switch and the received corresponding monitoring signal.

2. The system according to claim 1, wherein The first input end of the first relay is electrically connected to the corresponding monitoring signal output end of the counting module. The second input end of the first relay is connected to a first set power signal. The output end of the first relay outputs the first switching signal. The first relay is configured to adjust the output first switching signal according to the input signals of its own first input end and second input end. The first switching control end of the first change-over switch is electrically connected to the output end of the first relay. The first change-over switch is configured to connect the power input end of the first change-over switch to the indicating end of the first change-over switch or connect the power input end of the first change-over switch to the suspended end of the first change-over switch according to the first switching signal input to the first switching control end. The indicating end is electrically connected to the corresponding indicating module.

3. The system according to claim 1, characterized in that The indicating module includes at least one of a sound indicating module and a display indicating module.

4. The system according to claim 1, wherein When the second relay is configured to adjust the output switching signal according to the closed state of the corresponding foot switch, the first switch sub-module further includes a third change-over switch. The third change-over switch is configured to adjust the connection state of the first end of the foot switch according to the received first switching signal. The first input end of the second relay is connected to a second set power signal. The second input end of the second relay is electrically connected to the second end of the foot switch. The output end of the second relay outputs the second switching signal. The second relay is configured to adjust the output second switching signal according to the input signals of its own first input end and second input end. The second switching control end of the second change-over switch is electrically connected to the output end of the second relay. The second change-over switch is configured to connect the first spot welding start end of the second change-over switch to the second spot welding start end of the second change-over switch or connect the first spot welding start end of the second change-over switch to the suspended end of the second change-over switch according to the second switching signal input to the second switching control end.

5. The system according to claim 1, wherein When the second relay is configured to adjust the output switching signal according to the closed state of the corresponding foot switch and the received corresponding monitoring signal. The first input end of the second relay is electrically connected to the corresponding monitoring signal output end of the counting module. The second input end of the second relay is electrically connected to the second end of the foot switch. The first end of the foot switch is connected to a first set power signal. The output end of the second relay outputs the second switching signal. The second relay is configured to adjust the output second switching signal according to the input signals of its own first input end and second input end. The second switching control terminal of the second switching switch is electrically connected to the output terminal of the second relay. The second switching switch is configured to connect the first spot welding start terminal of the second switching switch to the second spot welding start terminal of the second switching switch or connect the first spot welding start terminal of the second switching switch to the floating terminal according to the second switching signal input at the second switching control terminal.

6. The system according to claim 4 or 5, characterized in that, The counting module is configured to monitor the number of spot welds of the corresponding spot welder according to the connection state of the second switching switch.

7. The system according to claim 6, wherein The first spot welding start terminal of the second switching switch is connected to a second set power signal, and the second spot welding start terminal of the second switching switch is electrically connected to the corresponding counting signal terminal of the counting module.

8. A spot welding device, comprising at least one spot welder and a spot welder monitoring system as described in any one of claims 1-7. The counting signal terminal of the counting module is electrically connected to the corresponding spot welder. The counting module is configured to monitor the number of spot welds of the corresponding spot welder according to the input signal at the counting signal terminal and generate a monitoring signal corresponding to the spot welder.

9. The device according to claim 8, characterized in that, The counting module is independently provided from the spot welder.

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