Workpiece welding counting and quality detection alarm device and method

Abstract

The present invention discloses a workpiece welding counting and quality detection alarm device and method in the field of welding machinery technology. The device comprises a box body, a control processor is arranged in the box body, a first fixing clamp is arranged at the bottom of the box body, a counting component and a resistance component are arranged in the box body, a wire-through hole is arranged on the side wall of the box body, and a voice prompt component, an indication component and a button switch are arranged on the outer side wall of the box body; a display operation screen is fixedly connected to the side wall of the box body close to the voice prompt component, the display operation screen is electrically connected to the control processor, the control processor is electrically connected to an infrared sensor, and a second fixing clamp is fixedly connected to the side wall of the infrared sensor. The present invention is simple and easy to operate, and material information is pre-inputted through the display operation component, and then the temperature data of different stages of a welding spot are respectively collected through the infrared sensor for comparison with the melting point of the material, so as to achieve the effect of accurately analyzing and judging the quality of the welding spot.

Description

Technical Field

[0001] The invention belongs to the technical field of welding machinery, and in particular relates to a workpiece welding counting and quality detection alarm device and method. Background Art

[0002] The welding of workpieces is generally carried out by a spot welder. The spot welder is a mechanical equipment that adopts the principle of double-sided double-point overcurrent welding. When working, two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode through the other electrode, an instantaneous heat melt is formed at the two contact resistance points, and the welding current instantly flows from the other electrode along the two workpieces to this electrode to form a loop. Welding by this method will not damage the internal structure of the workpiece being welded.

[0003] In order to prevent unqualified products such as leaked nuts and studs from flowing to the next process and improve error prevention efficiency, a workpiece welding counting alarm device is proposed, which counts the number of welds through a counter, compares the number counted by the counter with the preset number after welding is completed, and gives a voice prompt whether the welding is carried out according to the specified number. There are also workpiece welding counting alarm devices on the market that can detect the quality of welds during the welding process.

[0004] Due to the different thermal conductivity of different materials, the heat generated by hot welding during welding will also be different. When the device is used to weld different workpiece materials or to weld workpieces in areas with different materials, due to the different melting points of different materials, the device will not accurately detect the quality of spot welding through a single standard temperature detection of the welding point. Therefore, it is necessary to propose a workpiece welding counting and quality detection alarm device that can preset the melting points of different welding workpiece materials and accurately detect and judge the quality of the welding point by comparing the temperature during welding of the welding point. Summary of the invention

[0005] In order to solve the above-mentioned problems, the purpose of the present invention is to provide a workpiece welding counting and quality detection alarm device and method, which pre-inputs material information through a display operation component, and then uses an infrared sensor to collect temperature data of different stages of welding of a weld spot and compares them with the melting point of the material, so as to achieve the effect of accurately analyzing and judging the quality of the weld spot.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a workpiece welding counting and quality detection alarm device, comprising a box body, a control processor is arranged in the box body, a first fixing clamp for fixing the box body to a spot welding machine is arranged at the bottom of the box body, a welding counting component and a resistance component for detecting resistance data during welding are arranged in the box body, a wire hole for passing a data line is opened on the side wall of the box body, and a voice prompt component for prompting correct welding, an indication component for displaying welding quality and a button switch are arranged on the outer side wall of the box body;

[0007] A display operation screen for entering welding information is fixedly connected to the side wall of the box body near the voice prompt component. The display operation screen is electrically connected to the control processor. The control processor is electrically connected to an infrared sensor located outside the box. A second fixing clip for fixing the infrared sensor on the spot welding machine is fixedly connected to the side wall of the infrared sensor.

[0008] The principle of the basic solution is: fix the box and the infrared sensor on the spot welding machine respectively through the first fixing clamp and the second fixing clamp, realize the input of the welding target number and different welding material information through the display operation screen, realize the detection of welding quality through the cooperation of the resistance component and the infrared sensor with the intelligent system, realize the reminder of whether there is welding leakage and whether the welding quality meets the standard through the voice prompt component, and display the different welding qualities corresponding to different temperature conditions through the indicator component.

[0009] The beneficial effects of the basic solution are: 1. Since the welding of workpieces involves welding workpieces of different materials in one welding operation or areas of different materials in the same workpiece, the welding quality of different workpieces can be detected by pre-inputting the workpiece material information and matching the material melting point through the intelligent system.

[0010] 2. Because welding operations are repetitive and cumbersome, operators are prone to being absent-minded. Infrared sensors are used to detect the temperature of solder joints before welding to determine whether the solder joints have been welded, thereby reducing the probability of missed solder joints due to repeated welding and reducing damage to solder joints due to repeated welding.

[0011] 3. During the welding process, the operator needs to apply pressure to the workpiece to be welded so that the welding workpiece and the workpiece to be welded fit together so that the welding current can pass through to achieve melting welding. The temperature of the welding workpiece and the workpiece to be welded is collected by infrared sensors after welding the weld point, and the intelligent system conducts a comprehensive analysis. The voice prompt component prompts whether the welding is qualified, and then the operator determines whether re-welding is needed to reduce the probability of defective parts due to incomplete welding.

[0012] Furthermore, the counting component includes a counter, an air switch and a time relay. The counter is electrically connected to the control processor, the counter is fixedly connected to the inner wall of the box, the button switch is electrically connected to the counter, the counter is electrically connected to the air switch, and the air switch is electrically connected to the time relay.

[0013] The beneficial effects of the basic scheme are: the air switch is used to disconnect the circuit in the event of a short circuit or overload to protect the electrical components. The time relay is used to extend the display. When the number output by the counter reaches the preset value, the time relay is energized to keep the current value displayed. After a delay, the time relay is triggered to reset the counter.

[0014] Furthermore, the resistance component includes a resistance data collector, which is fixedly connected to the inside of the box, electrically connected to the control processor, and electrically connected to a resistance data line for connecting to the current part of the electric welder that emits welding current.

[0015] The beneficial effects of the basic solution are: by connecting the resistance data line to the discharge part of the spot welder, detecting the resistance of the reflow point passing through the solder joint, judging the welding quality of the solder joint after welding, achieving the effect of quickly judging the welding quality, and using the detection of welding current to reduce the waste of energy caused by secondary power-on.

[0016] Furthermore, the voice prompt component includes a voice alarm, and the voice alarm is electrically connected to the control processor.

[0017] The beneficial effect of the basic solution is that because the voice alarm broadcasts the quality information of welding completion and the current weld point respectively, it can achieve the effect of reminding the operator of the welding quality while welding, making it convenient for the welder to record the unqualified welding quality.

[0018] Furthermore, the indicating component includes an indicator light that can display three colors. The indicator light is located between the voice alarm and the button switch. The indicator light is fixedly connected to the outer side wall of the box body and is electrically connected to the control processor.

[0019] The beneficial effect of the basic scheme is: through the three-color display of the indicator light, the three temperature conditions of the solder joint can be indicated, which is helpful for the operator to judge the current condition of the solder joint, facilitate the operator to make the next operation judgment, and improve the practicality of the device.

[0020] Furthermore, the control processor includes an intelligent system, which includes a temperature acquisition module, a resistance acquisition module, a counting module, a temperature analysis module, a resistance analysis module, a display operation module and a voice broadcast module.

[0021] The temperature acquisition module is used to collect temperature data before, during and after welding of the spot welder at different welding stages through infrared sensors;

[0022] The resistance acquisition module is used to collect resistance data of the current emitted by the welding head of the spot welding machine through a resistance data collector;

[0023] A counting module, used for counting the number of completed welds of the spot welder through a counter;

[0024] Display operation module, used to record the welding number input by the operator and match the standard heating temperature of the welding point of the input material;

[0025] The temperature analysis module is used to compare and analyze the temperature data before welding to determine whether the welding point has been welded, compare and analyze the temperature data during welding to determine whether the welding quality meets the standards, and analyze the temperature data of the workpieces welded to each other after welding to determine whether the welding is successful;

[0026] Resistance analysis module, used to analyze the resistance waveform after welding and determine whether there are quality problems in welding;

[0027] The voice broadcast module is used to convert information into control signals to control the voice alarm to broadcast "correct" and "unqualified" information.

[0028] The beneficial effects of the basic solution are: by realizing overall control of device counting and quality inspection through the intelligent system, the intelligence of the device can be improved, the time of manual operation can be reduced, and the welding efficiency of the device can be improved.

[0029] A workpiece welding counting and quality detection alarm method comprises the following steps:

[0030] Step 1: Input welding quantity and material: The operator inputs the number of welding points required for the workpiece and the standard heating temperature of the welding points according to the material through the display operation screen, and transmits the number information and material information to the control processor;

[0031] Step 2: Determine whether welding is possible: The operator determines whether the current welding point has been welded by observing the color of the indicator light and whether the welding operation can be performed;

[0032] Step 3, welding quality judgment: After the indicator light color shows that welding is possible, perform welding operations. After welding the current welding point, observe whether the indicator light color changes to a color that meets the quality standards, and judge the welding quality of the current welding point by whether the voice alarm broadcasts the "unqualified" information;

[0033] Step 4, welding count: After the operator completes a welding operation, the display screen will count plus one to show that the welding work of one welding point has been completed;

[0034] Step 5, completion announcement: When the operator repeats steps 2 to 5 and completes welding multiple spots, the voice alarm will play "correct", and the operator will place the next workpiece on the spot welding machine;

[0035] Step 6, reset count: when it is determined that the welding of the workpiece is completed, the counter is reset and the welding of the next workpiece begins.

[0036] The beneficial effects of the basic scheme are: by judging whether welding is possible, the probability of operators performing multiple welding on the same welding point is reduced, the operator's judgment time on whether the welding point has been welded is reduced, the operator's welding speed is increased, the welding efficiency is effectively improved, the problems of missed welding and re-welding are reduced, the operating steps are simplified, and the time wasted due to later missed welding inspections on the workpiece is reduced.

[0037] Furthermore, in step three of the workpiece welding counting and quality detection alarm method, by observing the indicator light color and the voice alarm broadcast, the operator determines that the welding quality of the weld spot is unqualified and needs to mark the weld spot as unqualified for re-welding later.

[0038] The beneficial effect of the basic solution is: through real-time welding quality judgment after welding the weld, the effect of integrating welding and quality marking is achieved. Since the quality repair of the weld needs to be carried out later, the large-area quality inspection of the workpiece in the later stage is also reduced.

[0039] Furthermore, in step five of the workpiece welding counting and quality detection alarm method, if the voice alarm does not announce "correct" after the operator completes welding, it indicates that there is a weld leak in the workpiece. The operator needs to check the weld leak of the workpiece and perform repair welding until the voice alarm announces "correct" and the workpiece welding is completed.

[0040] The beneficial effect of the basic solution is: because the operator needs to focus on welding to ensure the success of welding, it is difficult to analyze and take into account the number of welds. The possibility of operator distraction is reduced through voice broadcast, which increases the welding speed.

[0041] Furthermore, in step six of the workpiece welding counting and quality detection alarm method, when the operator hears the voice alarm broadcast "correct", if the material of the next workpiece to be welded is different or the number of welding spots has changed, the data operation is reset from step one. When the welding workpiece material and the number of welding spots are the same, the process starts directly from step two.

[0042] The beneficial effect of the basic scheme is that through the design of step one, the number of welding and welding materials can be repeatedly set and welding can be performed, so that the device can adapt to the welding of multiple workpieces and welding of workpieces of different materials, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 Schematic diagram of a workpiece welding counting and quality detection alarm method in an embodiment of the present invention.

[0044] Figure 2 It is a logical judgment diagram of the workpiece welding counting and quality detection alarm method in an embodiment of the present invention.

[0045] Figure 3 It is a schematic diagram of the principle of a control processor of the workpiece welding counting and quality detection alarm device in an embodiment of the present invention.

[0046] Figure 4 It is an axonometric schematic diagram of a workpiece welding counting and quality detection alarm device in an embodiment of the present invention.

[0047] Figure 5 A schematic front cross-sectional view of a box in a workpiece welding counting and quality detection alarm device in an embodiment of the present invention.

[0048] The figure marks in the drawings of the specification include: 1. box body; 101. first fixing clip; 2. infrared sensor; 201. second fixing clip; 3. counter; 4. air switch; 5. time relay; 6. resistance data collector; 7. display operation screen; 8. indicator light; 9. control processor; 10. voice alarm; 11. button switch. DETAILED DESCRIPTION

[0049] The following is further described in detail through specific implementation methods:

[0050] Embodiment 1:

[0051] Basically as attached Figure 4 and Figure 5 As shown: a workpiece welding counting and quality detection alarm device, including a box 1, a control processor 9 is installed in the box 1, the control processor 9 includes an intelligent system, and the intelligent system includes a temperature acquisition module, a resistance acquisition module, a counting module, a temperature analysis module, a resistance analysis module, a display operation module and a voice broadcast module.

[0052] The bottom of the box 1 is bolted with a first fixing clamp 101 for fixing the box 1 to the spot welding machine. The box 1 is provided with a counting component for counting the welding points and a resistance component for the resistance data during welding. The side wall of the box 1 is provided with a wire hole for passing the data line. The outer wall of the box 1 is provided with a voice prompt component and a button switch 11 for prompting the correct welding. The button switch 11 is used to start the counting function. When the operator is performing welding work, firstly, the welding target number and the welding workpiece material of this welding work are input through the display operation screen 7. The device records the welding target number and the melting point of the corresponding welding workpiece material through the intelligent system, and then starts welding. During the welding process, the resistance component and the intelligent system cooperate with each other to monitor the welding quality of each welding point. The operator can understand the welding quality of the current welding point through the indicator light 8. When the welding of the current workpiece is completed, if there is no leakage welding, the voice prompt component will broadcast the "correct" voice, and then the welding of the next workpiece is carried out. If "correct" is not broadcast after the welding is completed, it proves that there is leakage welding. At this time, the operator needs to check the welding point of the workpiece until the voice prompt component broadcasts "correct".

[0053] The indication component includes an indicator light 8 that can display three colors. The indicator light 8 is fixed to the outer wall of the box body 1 by screws. The indicator light 8 is electrically connected to the control processor 9. The three colors that the indicator light 8 can display include a first color for indicating that the welding is not performed (temperature range: room temperature ±10°C), a second color for indicating that the welding point has been welded before welding or that the welding quality during welding does not meet the standards (temperature range: workpiece melting point -10°C to workpiece melting point -30°C), and a third color for indicating that the welding quality during welding meets the standards (temperature range: workpiece melting point ±10°C).

[0054] A display operation screen 7 for inputting welding information is bolted to the side wall of the box body 1 near the voice prompt component. The display operation screen 7 is electrically connected to the control processor 9. The display operation module is used to record the welding target number input by the operator and match the melting point of the input material. The operator inputs the welding number and the material of the welding workpiece on the display operation screen 7. After the display operation screen 7 matches the melting point of the corresponding material, the data is transmitted to the counting component and the temperature analysis module respectively. The counting component records the target welding number for comparison and judgment of welding leaks after the workpiece welding is completed. The temperature analysis module records the melting point temperature data for temperature comparison and judgment of the welding quality of each welding point.

[0055] The control processor 9 is electrically connected to an infrared sensor 2 located outside the box body 1, and a second fixing clip 201 for connecting the infrared sensor 2 to the spot welding machine is fixed by screws on the side wall of the infrared sensor 2. The temperature acquisition module is used for collecting temperature signals before, during and after welding for the same welding point of the spot welding machine at different welding stages through the infrared sensor 2 and converting them into temperature data, and then transmitting some temperature data to the temperature analysis module for analysis; the temperature analysis module is used to compare the highest temperature data with the preset melting point of the workpiece during the welding process of the welding point to determine whether the welding quality meets the standard, and transmit the information on whether the welding quality meets the standard to the indicator light 8, and the indicator light 8 displays the second color (the welding quality of the welding point does not meet the standard) and the third color (the welding quality of the welding point meets the standard) respectively. By pre-inputting the material and matching the melting point of the material, the device can accurately judge the quality of the welding point when welding different materials, reducing the probability of increasing artificial quality judgment deviation due to different materials.

[0056] In addition, the temperature analysis module can also be used to compare and analyze whether the temperature data before welding is greater than the normal temperature before welding to determine whether the weld has been welded, and transmit the signal of whether the weld has been welded to the indicator light 8, and the indicator light 8 displays the first color (the weld has not been welded) and the second color (the weld has been welded) correspondingly, thereby reducing the probability of welding leaks caused by repeated welding of the same weld, improving the accuracy of device counting, and reducing the probability of welding inferior workpieces; after the weld is welded, it is analyzed whether the workpieces welded to each other are heated up to determine whether the welding is successful or not, and the information is transmitted to the indicator light 8 to display the first color (the weld failed to weld) and the third color (the weld was successfully welded). Due to the electric welding method, the current passes through the resistance at the junction of the two workpieces, causing rapid heating to reach the melting point for melting welding. By detecting the temperature of the two workpieces after welding, it is confirmed that the two workpieces are heated up at the same time, thereby improving the welding success rate and reducing the probability of reducing the welding efficiency due to unsuccessful welding.

[0057] Embodiment 2:

[0058] As attached Figure 5 As shown, the difference from the above embodiment is that the counting component includes a counter 3, an air switch 4 and a time relay 5. The counter 3 is electrically connected to the control processor 9, the counter 3 is fixedly connected to the inner wall of the box 1, the button switch 11 is electrically connected to the counter 3, the counter 3 is electrically connected to the air switch 4, and the air switch 4 is electrically connected to the time relay 5; the air switch 4 is used to disconnect the circuit in the event of a short circuit or overload to protect the electrical components. The time relay 5 is used to extend the display. When the number output by the counter 3 reaches the preset value, the time relay 5 is energized to keep the current value displayed. After a delay, the time relay 5 is triggered to reset the counter.

[0059] The counting module is used to count the number of completed welds of the spot welder through the counter 3. During the welding process, the counting module compares the number of completed welds recorded by the counter 3 with the number of welding targets input by the operator in real time. When the two data are equal, the counting module transmits the signal of welding completion to the voice broadcast module, and broadcasts the "correct" information through the voice prompt component, thereby achieving the effect of counting while welding.

[0060] Embodiment 3:

[0061] As attached Figure 5As shown, the difference from the above embodiment is that the resistance component includes a resistance data collector 6, the resistance data collector 6 is screwed to the inside of the box 1, the resistance data collector 6 is electrically connected to the control processor 9, and the resistance data collector 6 is electrically connected to a resistance data line for connecting to the current part of the spot welder that emits the welding current; during the device installation stage, the resistance data line is connected and installed to the current part of the spot welder that emits the welding current. When the current flows back after the welding process, the resistance data collector 6 will collect the return current to obtain the resistance of the welding head, and the welding quality of the welding point can be judged by analyzing and comparing the resistance waveform of the welding point. By detecting the resistance waveform, the welding process can be monitored in real time and non-destructively, and welding quality problems can be discovered in time.

[0062] The resistance acquisition module is used to collect resistance data of the current emitted by the welding head of the spot welding machine through the resistance data collector 6, collect resistance through the resistance data collector 6, and transmit the resistance data to the resistance analysis module.

[0063] The resistance analysis module is used to receive the resistance data transmitted by the resistance acquisition module, and record and analyze the resistance data of each welding point, compare the resistance data of the welding point with the historical resistance data, analyze the resistance waveform, and determine whether the weld scar formed after welding the welding point has the problem of loose welding (abnormal resistance value), and send a signal whether the welding quality meets the standard to the voice broadcast module to control the voice prompt component to broadcast the "unqualified" information, so that the operator can mark it, thereby realizing the effect of discovering welding quality problems during the welding process, effectively reducing the problem of dangerous problems caused by loose welding when the workpiece is used in the later stage, and also reducing the labor waste of manually checking weld scars after welding is completed.

[0064] Embodiment 4:

[0065] As attached Figure 4 and Figure 5 As shown, the difference from the above embodiment is that the voice prompt component includes a voice alarm 10, and the voice alarm 10 is electrically connected to the control processor 9.

[0066] The voice broadcast module is used to receive the information of welding completion and welding quality failure transmitted by the resistance analysis module and the counting module, and convert the information into different control signals respectively. By controlling the voice alarm 10 to broadcast the information of "correct" and "failed", it can achieve the effect of reminding the operator of the welding quality while welding, which is convenient for the operator to mark the welding failure and facilitate the operation.

[0067] Embodiment 5:

[0068] As attached Figure 1 , Figure 2 and Figure 3As shown, a workpiece welding counting and quality detection alarm method comprises the following steps:

[0069] Step 1, input welding quantity and material: the operator inputs the number of welding points required for the workpiece and the standard heating temperature of the welding points according to the material through the display operation screen 7, and transmits the number information and material information to the control processor 9;

[0070] Step 2: Determine whether welding is possible: the operator determines whether the welding point currently being welded has been welded by observing the color of the indicator light 8, and whether the welding operation can be performed;

[0071] Step 3, welding quality judgment: after the indicator light 8 shows that welding is possible, the welding operation is performed. After welding the current welding point, observe whether the color change of the indicator light 8 is a color that meets the quality standards, and judge the welding quality of the current welding point by whether the voice alarm 10 broadcasts the "unqualified" information. When the operator determines that the welding quality of the welding point is unqualified, it is necessary to mark the welding point with a mark that does not meet the quality standards, and perform repair welding later;

[0072] Step 4, welding counting: after the operator completes a welding operation, the display operation screen 7 will count plus one to show that the welding work of one welding point has been completed;

[0073] Step 5, broadcast completion: When the operator repeats steps 2 to 5 to weld multiple welding points, the voice alarm 10 will play "correct", and the operator can start welding the next workpiece. If the voice alarm 10 does not broadcast "correct" after the operator completes welding, it means that there is a welding leak on the workpiece. The operator needs to check the welding leak on the workpiece and perform repair welding until the voice alarm 10 broadcasts "correct" to complete the welding of the workpiece;

[0074] Step 6, reset count: When it is determined that the welding of the workpiece is completed, if the material of the next workpiece is different or the number of welding spots has changed, reset the data operation from step 1. When the material of the welding workpiece and the number of welding spots are the same, start the process directly from step 2.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0076] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A workpiece welding counting and quality detection alarm device, characterized in that: The invention comprises a box (1), wherein a control processor (9) is arranged in the box (1), a first fixing clamp (101) for fixing the box (1) to a spot welding machine is arranged at the bottom of the box (1), a counting component for counting welding and a resistance component for detecting resistance data during welding are arranged in the box (1), a wire hole for passing a data wire is arranged on a side wall of the box (1), and a voice prompt component and a button switch (11) for prompting correct welding are arranged on an outer wall of the box (1); A display operation screen (7) for inputting welding information is fixedly connected to a side wall of the box body (1) close to the voice prompt component, the display operation screen (7) is electrically connected to a control processor (9), the control processor (9) is electrically connected to an infrared sensor (2) located outside the box body (1), and a second fixing clip (201) for fixing the infrared sensor (2) on the spot welding machine is fixedly connected to the side wall of the infrared sensor (2); The control processor (9) includes an intelligent system, which includes a temperature acquisition module, a resistance acquisition module, a counting module, a temperature analysis module, a resistance analysis module, a display operation module, and a voice broadcast module; A temperature acquisition module is used for collecting temperature data before, during and after welding by means of an infrared sensor (2) at different welding stages of the spot welder; A resistance acquisition module, used for acquiring resistance data of the current emitted by the welding head of the spot welding machine through a resistance data acquisition device (6); A counting module, used for counting the number of completed welds of the spot welder through a counter (3); Display operation module, used to record the welding number input by the operator and match the standard heating temperature of the welding point of the input material; The temperature analysis module is used to compare and analyze the temperature data before welding to determine whether the welding point has been welded, compare and analyze the temperature data during welding to determine whether the welding quality meets the standards, and analyze the temperature data of the workpieces welded to each other after welding to determine whether the welding is successful; Resistance analysis module, used to analyze the resistance waveform after welding and determine whether there are quality problems in welding; The voice broadcast module is used to convert information into control signals to control the voice alarm to broadcast "correct" and "unqualified" information.

2. The workpiece welding counting and quality detection alarm device according to claim 1 is characterized in that: The counting assembly comprises a counter (3), an air switch (4) and a time relay (5); the counter (3) is electrically connected to a control processor (9); the counter (3) is fixedly connected to an inner wall of the box body (1); the button switch (11) is electrically connected to the counter (3); the counter (3) is electrically connected to the air switch (4); and the air switch (4) is electrically connected to the time relay (5).

3. The workpiece welding counting and quality detection alarm device according to claim 2 is characterized in that: The resistance assembly comprises a resistance data collector (6), the resistance data collector (6) is fixedly connected to the inside of the box (1), the resistance data collector (6) is electrically connected to a control processor (9), and the resistance data collector (6) is electrically connected to a resistance data line for connecting to a current part of the electric welding machine that emits welding current.

4. The workpiece welding counting and quality detection alarm device according to claim 3 is characterized in that: The voice prompt component comprises a voice alarm (10), and the voice alarm (10) is electrically connected to the control processor (9).

5. The workpiece welding counting and quality detection alarm device according to claim 4 is characterized in that: The indicator assembly comprises an indicator light (8) capable of displaying three colors, the indicator light (8) being located between the voice alarm (10) and the push button switch (11), the indicator light (8) being fixedly connected to the outer wall of the box body (1), and the indicator light (8) being electrically connected to the control processor (9).

6. A workpiece welding counting and quality detection alarm method, characterized in that: The workpiece welding counting and quality detection alarm device according to any one of claims 1 to 5 is adopted, comprising the following steps: Step 1: Input welding quantity and material: The operator inputs the number of welding points required for the workpiece and the standard heating temperature of the welding points according to the material through the display operation screen (7), and transmits the number information and material information to the control processor (9); Step 2, judging whether welding is possible: the operator judges whether the welding point currently being welded has been welded by observing the color of the indicator light (8), and whether the welding operation can be performed; Step 3, welding quality judgment: after the indicator light (8) shows that welding is possible, the welding operation is performed, and after the current welding point is welded, the color change of the indicator light (8) is observed to determine whether it is a color that meets the quality standards, and the welding quality of the current welding point is determined by whether the voice alarm (10) broadcasts a message of "unqualified"; Step 4, welding counting: after the operator completes a welding operation, the display operation screen (7) will count up by one to show that the welding work of one welding point has been completed; Step 5, completion announcement: When the operator repeats steps 2 to 5 to complete welding of multiple welding spots, the voice alarm (10) will play "correct", and the operator will place the next workpiece on the spot welding machine; Step 6, reset count: when it is determined that the welding of the workpiece is completed, the counter is reset and the welding of the next workpiece begins.

7. The workpiece welding counting and quality detection alarm method according to claim 6 is characterized in that: In step three, by observing the color of the indicator light (8) and the announcement of the voice alarm, the operator determines that the welding quality of the weld point is unqualified and needs to mark the weld point as unqualified for re-welding at a later time.

8. The workpiece welding counting and quality detection alarm method according to claim 6 is characterized in that: In step 5, if the voice alarm (10) does not announce "correct" after the operator completes welding, it indicates that there is a weld leak in the workpiece, and the operator needs to check the weld leak in the workpiece and perform repair welding until the voice alarm (10) announces "correct", indicating that the welding of the workpiece is completed.

9. The workpiece welding counting and quality detection alarm method according to claim 6 is characterized in that: In step six, when the operator hears the voice alarm (10) announce "correct", if the material of the next workpiece to be welded is different or the number of welding spots has changed, the data operation is reset from step one. If the material of the next workpiece to be welded and the number of welding spots are the same, the process is directly started from step two.

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