Detection system and sandblasting machine

Abstract

A detection system and a sand blasting machine comprising the same. The detection system comprises a detector, a conversion module and a warning module. The detector has a detection part, a first output part and a second output part. The detection part is used for detecting a first air pressure at a nozzle during sand blasting and a second air pressure at the nozzle when the sand blasting is stopped. The first output part is used for outputting a signal when the first air pressure is within a preset range and stopping outputting the signal when the first air pressure exceeds the preset range. The second output part is used for outputting a signal when the second air pressure exceeds a preset value. The conversion module is coupled with the first output part and used for receiving the output signal of the first output part and outputting a warning signal when the first output part stops outputting the signal. The warning module is coupled with the conversion module and the second output part respectively and used for receiving the warning signal to give a warning and receiving the output signal of the second output part to give a warning. The detection system realizes the effect of automatic warning of air pressure abnormality of the sand blasting machine.

Description

Technical Field

[0001] This application relates to the field of air pressure detection technology, specifically to a detection system and a sandblasting machine. Background Technology

[0002] Sandblasting machines use compressed air as power to form a high-speed jet that propels abrasive particles onto the surface of the workpiece. This alters the mechanical properties of the workpiece surface. Due to the impact and cutting action of the abrasive particles on the workpiece surface, the surface achieves a certain degree of cleanliness and varying roughness, thereby improving the mechanical properties of the workpiece surface. It effectively removes impurities, discoloration, and oxide films from the workpiece surface, while simultaneously roughening the surface of the abrasive particles, reducing residual stress on the workpiece surface, and increasing the surface hardness.

[0003] However, current sandblasting machines suffer from unstable air pressure during operation, hindering effective sandblasting. Furthermore, even when the machine is stopped, some solenoid valves may fail to close properly, causing the machine to continue blasting and resulting in workpiece failure. The inability to quickly detect and address these issues, such as unstable air pressure and leaks from malfunctioning solenoid valves, leads to workpiece scrapping and increased losses. Summary of the Invention

[0004] In view of the above, it is necessary to propose a detection system and a sandblasting machine including the detection system, so as to issue a warning when unstable air pressure occurs during sandblasting operation and when air leakage occurs after sandblasting is stopped, so as to facilitate technicians to deal with the situation quickly and reduce losses.

[0005] This application provides a detection system for detecting the air pressure at the nozzle of a sandblasting machine, including a detector, a conversion module, and a warning module. The detector has a detection unit, a first output unit, and a second output unit. The detection unit is used to detect the first air pressure at the nozzle when the sandblasting machine is performing sandblasting, and to detect the second air pressure at the nozzle when the sandblasting machine stops sandblasting. The first output unit and the second output unit are both coupled to the detection unit. The first output unit is used to output a signal when the first air pressure is within a preset range, and to stop outputting the signal when the first air pressure exceeds the preset range. The second output unit is used to output a signal when the second air pressure exceeds a preset value. The conversion module is coupled to the first output unit and is used to receive the output signal from the first output unit and to output a warning signal when the first output unit stops outputting the signal. The warning module is coupled to both the conversion module and the second output unit and is used to receive the warning signal for warning purposes, and to receive the output signal from the second output unit for warning purposes.

[0006] In some embodiments, the detection system further includes a shutdown module, which is coupled to the conversion module and the control system of the sandblasting machine, respectively, and is used to receive the warning signal and control the sandblasting machine to shut down through the control system according to a preset program.

[0007] In some embodiments, the preset procedure is to send a stop signal to the control system of the sandblasting machine when the time for which the stop module receives the warning signal reaches a preset time.

[0008] In some embodiments, the preset time is 30 seconds.

[0009] In some embodiments, the warning module includes a power supply, a warning device, a first relay, and a second relay; the first relay is electrically connected between the power supply and the warning device, and coupled to the conversion module, for energizing the power supply and the warning device when the warning signal is received, causing the warning device to issue a warning message; the second relay is electrically connected between the power supply and the warning device, and coupled to a second output terminal, for energizing the power supply and the warning device when the output signal of the second output terminal is received, causing the warning device to issue a warning message.

[0010] In some embodiments, the power supply is also electrically connected to the detector to supply power to the detector when the sandblasting machine is stopped.

[0011] In some embodiments, the warning information is at least one of sound, light, or electricity.

[0012] In some embodiments, the preset value is 0.01 MPa.

[0013] This application also provides a sandblasting machine, including the detection system described in any of the above technical solutions.

[0014] In some embodiments, the sandblasting machine has a barcode scanner, which is used to scan the workpiece to be sandblasted and send the acquired barcode information to the sandblasting machine. The sandblasting machine is used to associate the barcode information with the sandblasting information when sandblasting the workpiece.

[0015] The aforementioned detection system and the sandblasting machine including this system are described below. When the sandblasting machine is performing sandblasting operations, the detector's sensing unit continuously monitors the first air pressure at the nozzle. When the first air pressure is within a preset range, the detector's first output unit outputs a signal. The conversion module receives this signal. When the first air pressure exceeds the preset range (i.e., the first air pressure is too high or too low), the detector's first output unit stops outputting a signal. The conversion module, not receiving the first output signal, outputs a warning signal instead. The warning module, upon receiving the warning signal from the conversion module, issues a warning to alert technicians to handle the situation promptly. When the sandblasting machine stops sandblasting, the detector's sensing unit continuously monitors the second air pressure at the nozzle. When the second air pressure does not exceed a preset value, the detector's second output unit does not output a signal. When the second air pressure exceeds the preset value, the detector's second output unit outputs a signal. The warning module, upon receiving this signal, issues a warning to alert technicians to handle the situation promptly.

[0016] The detection system and sandblasting machine including the detection system in this application embodiment, through the cooperation of the detector, conversion module, and warning module, achieve the effect of automatic warning for abnormal air pressure in the sandblasting machine. The detection system and the sandblasting machine including the detection system can detect the air pressure at the nozzle during sandblasting operations and issue a warning when the air pressure exceeds a preset range, allowing technicians to quickly take appropriate action and avoid ineffective sandblasting of workpieces due to unstable air pressure, thereby reducing workpiece scrap and losses. The detection system and the sandblasting machine including the detection system can also detect the air pressure at the nozzle after sandblasting stops and issue a warning when the air pressure exceeds a preset value, allowing technicians to quickly take appropriate action and avoid workpiece scrapping due to continued sandblasting, thereby reducing losses. In addition, by detecting the air pressure at the nozzle after sandblasting stops, the waste of air source can be reduced, which helps to lower costs. By setting the detector to have a first output terminal and a second output terminal, the signal output of the detector can be effectively distinguished, so that the detection results during sandblasting operation and the detection results after sandblasting stops do not interfere with each other, which helps to improve the detection accuracy of the detector and makes it easier for the warning module to issue warnings more accurately. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the detection system provided in the embodiments of this application.

[0018] Figure 2 This is a schematic diagram of the modules of the sandblasting machine provided in the embodiments of this application.

[0019] Explanation of main component symbols

[0020] Sandblasting machine 1

[0021] Detection System 100

[0022] Detector 10

[0023] Detection Unit 12

[0024] First Output Section 14

[0025] Second output section 16

[0026] Conversion Module 20

[0027] Warning module 30

[0028] Power supply 32

[0029] Alarm device 34

[0030] First relay 36

[0031] Second relay 38

[0032] Shutdown Module 40

[0033] 200 nozzles

[0034] Control System 300

[0035] barcode scanner 400 Detailed Implementation

[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0037] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0040] Please see Figure 1 As shown, this application embodiment provides a detection system 100, which is used to detect the air pressure at the nozzle (not shown) of a sandblasting machine (not shown) so that the sandblasting machine can automatically warn when the air pressure is abnormal, reducing workpiece scrap and thus reducing losses. The detection system 100 includes a detector 10, a conversion module 20, and a warning module 30.

[0041] Specifically, the detector 10 has a detection unit 12, a first output unit 14, and a second output unit 16. Both the first output unit 14 and the second output unit 16 are coupled to the detection unit 12. The first output unit 14 and the second output unit 16 output signals independently without interference, and only one of the first output unit 14 and the second output unit 16 can output a signal at any given time. The detection unit 12 has an air pressure detection function. It is used to detect the first air pressure at the nozzle when the sandblasting machine is performing sandblasting, and to detect the second air pressure at the nozzle when the sandblasting machine stops sandblasting. The first output unit 14 outputs a signal based on the first air pressure being within a preset range, and stops outputting a signal based on the first air pressure exceeding the preset range. The second output unit 16 outputs a signal based on the second air pressure exceeding a preset value. The detector 10 can be an electronic pressure gauge. The output signals of the first output unit 14 and the second output unit 16 are both electrical signals. The detection unit 12 can be located at the nozzle to facilitate the detection of the air pressure at the nozzle.

[0042] Understandably, when a sandblasting machine performs sandblasting operations, it can effectively sandblast the workpiece when the first air pressure is within a preset range. When the first air pressure exceeds the preset range, for example, if it is too low, the first air pressure cannot effectively propel the abrasive onto the workpiece, thus failing to effectively impact and cut the workpiece surface, resulting in insufficient blasting force and defects. When the first air pressure exceeds the preset range, for example, if it is too high, the higher air pressure increases the impact and cutting force of the abrasive on the workpiece surface, resulting in excessive blasting force and defects that cannot be repaired. In some embodiments, the preset range of the first air pressure can be 1 MPa-4 MPa. Understandably, the preset range can also be set to 2 MPa-3 MPa, 1 MPa-6 MPa, or other ranges, which can be set according to actual conditions. This application embodiment does not specifically limit this.

[0043] Understandably, when the sandblasting machine stops sandblasting, the value of the second air pressure should be 0, meaning there should be no air pressure at the nozzle. When the second air pressure exceeds a preset value, that is, when the detection unit 12 of the detector 10 can detect an air pressure value at the nozzle, it indicates that an air leak has occurred at the nozzle of the sandblasting machine. In some embodiments, the preset value can be 0.01 MPa, meaning that when the detection unit 12 of the detector 10 detects that the second air pressure at the nozzle exceeds 0.01 MPa, it indicates that an air leak has occurred at the nozzle of the sandblasting machine. Understandably, the preset value can also be set to 0.02 MPa, 0.03 MPa, or other values, and can be set according to actual conditions. This application embodiment does not specifically limit this.

[0044] Understandably, a sandblasting machine has multiple nozzles that work together to sandblast the workpiece. In actual use, each nozzle is equipped with a corresponding detector 10. The multiple detectors 10 output signals independently and do not interfere with each other. Understandably, when one of the detectors 10 detects an abnormal air pressure at its corresponding nozzle, the detection system 100 will automatically issue a warning.

[0045] The conversion module 20 is coupled to the first output section 14 of the detector 10. The conversion module 20 receives the output signal from the first output section 14 and outputs a warning signal when the first output section 14 stops outputting the signal. Specifically, when the conversion module 20 receives the output signal from the first output section 14, it does not output a warning signal. When the first output section 14 stops outputting the signal, and the conversion module 20 no longer receives the output signal from the first output section 14, it outputs a warning signal through conversion. The conversion module 20 can be a high-speed relay. When the high-speed relay receives the output signal from the first output section 14, it converts to a normally open signal, thus preventing the output of a warning signal. Conversely, when the high-speed relay does not receive the output signal from the first output section 14, it converts to a normally closed signal and outputs a warning signal. Understandably, in other embodiments, the conversion module 20 can also be other circuit modules or functional components capable of signal conversion. In actual use, depending on the number of nozzles, the conversion module 20 can include multiple high-speed relays, each outputting signals independently without interference.

[0046] The warning module 30 is coupled to both the conversion module 20 and the second output unit 16. The warning module 30 receives warning signals from the conversion module 20 and also receives output signals from the second output unit 16. Since only one of the first output unit 14 and the second output unit 16 can output a signal at a time, the warning module 30 will not receive both signals simultaneously. In practical use, the warning module 30 can be configured with different warning functions. For example, after receiving a warning signal from the conversion module 20, the warning module 30 can provide an audible warning; after receiving an output signal from the second output unit 16, it can provide a visual warning. Alternatively, the warning module 30 can also have only one warning function, such as providing both audible and visual warnings.

[0047] When the aforementioned detection system 100 is applied to a sandblasting machine, during sandblasting operations, abrasive is ejected from each nozzle and sprayed onto the workpiece surface. During the sandblasting process, the detection unit 12 of each detector 10 continuously detects the first air pressure at the corresponding nozzle. When the first air pressure at each nozzle is within a preset range, the first output unit 14 of each detector 10 outputs a signal. The conversion module 20 receives the output signals from each first output unit 14 and does not output a warning signal. If external factors cause the first air pressure of at least one nozzle to exceed the preset range (e.g., the first air pressure at one nozzle is too high or too low), the first output unit 14 of the corresponding detector 10 stops outputting a signal. The conversion module 20, not receiving the output signal from the first output unit 14 of the corresponding detector 10, outputs a warning signal instead. The warning module 30, upon receiving the warning signal from the conversion module 20, issues a warning to remind technicians to quickly handle the situation, such as adjusting the air pressure at the corresponding nozzle or performing other operations.

[0048] It is important to note that when a sandblasting machine stops sandblasting, it means that the sandblasting operation on the workpiece has been completed and the sandblasting of the workpiece needs to be stopped in order to unload or perform other operations on the workpiece. If the nozzle continues to sandblast the workpiece at this time, it will cause excessive impact and cutting on the workpiece, resulting in the workpiece being scrapped.

[0049] When the sandblasting machine stops sandblasting, the detection unit 12 of each detector 10 will still detect the second air pressure at the corresponding nozzle in real time. When the second air pressure at each nozzle does not exceed the preset value, the second output unit 16 of each detector 10 will not output a signal. Due to hardware and environmental influences, when the second air pressure of at least one of the nozzles exceeds the preset value, the second output unit 16 of the corresponding detector 10 will output a signal. After receiving the output signal from the second output unit 16 of the corresponding detector 10, the warning module 30 will issue a warning to remind technicians to take immediate action, such as closing the main valve of compressed air, stopping the sandblasting machine, or performing other operations.

[0050] In this embodiment, the warning module 30 may include a power supply 32, a warning device 34, a first relay 36, and a second relay 38. The power supply 32 supplies power to the warning device 34 and may be a 24V switching power supply. The first relay 36 is electrically connected between the power supply 32 and the warning device 34 and is coupled to the conversion module 20. Upon receiving a warning signal from the conversion module 20, the first relay 36 changes from normally open to normally closed, energizing the power supply 32 and the warning device 34, thereby enabling the warning device 34 to issue a warning message. The second relay 38 is electrically connected between the power supply 32 and the warning device 34 and is coupled to the second output section 16 of each detector 10. Upon receiving an output signal from the second output section 16 of at least one detector 10, the second relay 38 changes from normally open to normally closed, energizing the power supply 32 and the warning device 34, thereby enabling the warning device 34 to issue a warning message. Thus, by configuring the warning module 30, which includes a power supply 32, an alarm 34, a first relay 36, and a second relay 38, it achieves the effect of receiving the warning signal from the conversion module 20 and the output signal from the second output unit 16 to trigger an alarm. Furthermore, the warning module 30 has fewer components and a simpler circuit structure, thus saving costs.

[0051] In this embodiment, the power supply 32 of the warning module 30 can also be electrically connected to each detector 10 to supply power to each detector 10 when the sandblasting machine is stopped. Thus, by electrically connecting the power supply 32 to each detector 10 to supply power, each detector 10 can still detect the second pressure at each nozzle in real time when the sandblasting machine is stopped, preventing air leakage, avoiding air waste, saving air resources, and reducing costs.

[0052] In this embodiment of the application, the warning information of the alarm device 34 can be at least one of sound, light, or electricity.

[0053] In some embodiments, the alarm 34 can be a buzzer, which emits sound to provide an alert. The sound emitted by the buzzer can be adaptively set. For example, when the first air pressure exceeds a preset range, the buzzer can emit a "pressure abnormality" sound warning; when the second air pressure exceeds a preset value, the buzzer can emit a "leak" sound warning. The specific settings can be configured according to actual conditions, and this application embodiment does not impose specific limitations on this. It is understood that the alarm 34 can also be other functional devices capable of generating sound.

[0054] In some embodiments, the alarm 34 can also be an alarm light, which emits colored light to provide a warning. The color of the alarm light can be adaptively set; for example, when the first air pressure is within a preset range, the alarm light can emit green light to indicate normal operation; when the first air pressure exceeds the preset range, the alarm light can emit red light to provide a warning; when the second air pressure exceeds a preset value, the alarm light can emit orange light to provide a warning; and when the second air pressure is within the preset value, the alarm light does not emit any colored light to save energy. The specific settings can be configured according to actual conditions, and this application embodiment does not impose specific limitations on this. It is understood that the alarm 34 can also be other functional devices capable of emitting at least one color of light.

[0055] In some embodiments, the alarm 34 can also be a combination of a buzzer and an alarm light, that is, the alarm 34 can emit both sound and colored light. The specific settings can be made according to the actual situation, and this application embodiment does not make specific limitations in this regard.

[0056] In some embodiments, the alarm 34 can also be a signal transmitter. The signal transmitter sends alarm information to an industrial control computer or a technician's mobile or wearable device via wired or wireless transmission to remind the technician to handle the situation promptly. The industrial control computer can be a computer or touchscreen for controlling the sandblasting machine; the mobile device can be a mobile phone or tablet; and the wearable device can be a smart bracelet, smartwatch, or smart glasses. For example, when the first air pressure exceeds a preset range, the signal transmitter sends alarm information wirelessly to the technician's wearable smart bracelet. When the second air pressure exceeds a preset value, the signal transmitter sends alarm information wirelessly to the technician's wearable smart bracelet. Upon receiving the alarm information, the wearable smart bracelet alerts the technician by vibrating or making a sound, ensuring the technician is notified as quickly and efficiently as possible. Specific settings can be configured according to actual circumstances, and this embodiment does not impose specific limitations on this.

[0057] In some embodiments, the alarm 34 can also be a combination of a buzzer and a signal transmitter, that is, the alarm 34 can emit sound and send warning information; the alarm 34 can also be a combination of a warning light and a signal transmitter, that is, the alarm 34 can emit colored light and send warning information; the alarm 34 can also be a combination of a buzzer, a warning light and a signal transmitter, that is, the alarm 34 can emit sound, emit colored light and send warning information. The specific settings can be made according to the actual situation, and the embodiments of this application do not make specific limitations in this regard.

[0058] In this embodiment, the detection system 100 further includes a shutdown module 40, which is coupled to the conversion module 20 and the control system (not shown) of the sandblasting machine. The control system, such as the sandblasting machine's processor, is used to control the shutdown of the sandblasting machine. The shutdown module 40 receives warning signals output by the conversion module 20 and controls the sandblasting machine to shut down according to a preset program. Thus, by setting the shutdown module 40, when the warning device 34 of the warning module 30 issues a warning message and the technician fails to handle it promptly, the shutdown module 40 can stop the sandblasting machine in a timely manner to avoid further workpiece scrapping, reduce workpiece scrap, and thus minimize losses.

[0059] In some embodiments, the aforementioned preset procedure may involve the shutdown module 40 receiving a warning signal for a preset time and then sending a shutdown signal to the control system of the sandblasting machine. Upon receiving the shutdown signal from the shutdown module 40, the control system controls the sandblasting machine to stop. The shutdown module 40 may be a time-delay relay, and the delay time of the time-delay relay may be set to 30 seconds. Understandably, the delay time of the time-delay relay may also be set to 10 seconds, 20 seconds, 40 seconds, 50 seconds, etc., depending on the actual situation. This application embodiment does not specifically limit this. The shutdown module 40 may also be other components or circuits with delay or timing functions, depending on the actual situation. This application embodiment does not specifically limit this.

[0060] The detection system 100 of this application embodiment, through the cooperation of the detector 10, conversion module 20, warning module 30, and shutdown module 40, achieves the effect of automatic warning for abnormal air pressure in the sandblasting machine. If the air pressure at any nozzle in the sandblasting machine exceeds a preset range or value, the warning module 30 can issue a warning. The detection system 100 can detect the air pressure at each nozzle during sandblasting operations and issue a warning when the air pressure at any nozzle exceeds the preset range, allowing technicians to quickly take appropriate action. It can also stop the sandblasting machine if technicians fail to take timely action, preventing ineffective sandblasting of workpieces due to unstable air pressure, thereby reducing workpiece scrap and losses. The detection system 100 can also detect the air pressure at each nozzle after the sandblasting machine stops and issue a warning when the air pressure exceeds the preset value, allowing technicians to quickly take appropriate action and preventing workpiece scrap due to continued sandblasting, thus reducing losses. Furthermore, by detecting the air pressure at each nozzle after sandblasting stops and issuing a warning when abnormal air pressure is detected at each nozzle, air waste can be reduced, air resources can be saved, and costs can be lowered. By setting the detector 10 to have a first output section 14 and a second output section 16, the signal output of the detector 10 can be effectively distinguished, so that the detection results during sandblasting operation and the detection results after sandblasting stops do not interfere with each other, which helps to improve the detection accuracy of the detector 10 and makes it easier for the warning module 30 to issue warnings more accurately. The detection system 100 also has the advantages of low cost and high efficiency, which helps to save costs.

[0061] Please see Figure 2 As shown in the figure, this application embodiment also provides a sandblasting machine 1, which includes a detection system 100 as described in the above technical solution. The detection system 100 is used to detect the air pressure at each nozzle 200 of the sandblasting machine 1, so that the sandblasting machine 1 can achieve the effect of automatic warning for abnormal air pressure, reduce workpiece scrap, and thus reduce losses. The sandblasting machine 1 also includes a control system 300, which can be used to control the shutdown of the sandblasting machine 1, control the sandblasting operation of the sandblasting machine 1, and control the adjustment of the air pressure at each nozzle 200 of the sandblasting machine 1, etc.

[0062] The sandblasting machine 1 in this embodiment of the application achieves the effect of automatic warning for abnormal air pressure by cooperating with the detector 10, conversion module 20, warning module 30 and shutdown module 40 of the detection system 100. If the air pressure at any nozzle 200 in the sandblasting machine 1 exceeds the preset range or the preset value, the warning module 30 of the detection system 100 can issue a warning. The detection system 100 of the sandblasting machine 1 can detect the air pressure at each nozzle 200 during the sandblasting operation and issue a warning when the air pressure exceeds the preset range, so that technicians can quickly take corresponding measures. If the technicians fail to take corresponding measures quickly, the sandblasting machine 1 can be stopped to avoid the inability to effectively sandblast the workpiece due to unstable air pressure, thereby reducing the scrap of workpieces and thus reducing losses. The detection system 100 of the sandblasting machine 1 can also detect the air pressure at each nozzle 200 after the sandblasting machine 1 stops sandblasting, and issue a warning when the detected air pressure exceeds the preset value, so that technicians can quickly take corresponding measures to avoid scrapping the workpiece due to continued sandblasting, thereby reducing losses. In addition, by detecting the air pressure at each nozzle 200 after sandblasting stops, the waste of air source can be reduced, which is conducive to reducing costs. By setting the detector 10 to have a first output section 14 and a second output section 16, the signal output of the detector 10 can be effectively distinguished, so that the detection results during sandblasting operation and the detection results after sandblasting stops do not interfere with each other, which is conducive to improving the detection accuracy of the detector 10 and making it easier for the warning module 30 to issue warnings more accurately. The detection system 100 also has the advantages of low cost and high efficiency. The detection system 100 can be easily integrated into the sandblasting machine 1 without major modifications to the sandblasting machine 1, which is conducive to reducing the modification cost of the sandblasting machine 1 and saving costs.

[0063] In this embodiment, the sandblasting machine 1 also includes a barcode scanner 400, located at the feed inlet of the sandblasting machine 1. The barcode scanner 400 scans the workpiece to be sandblasted and sends the acquired barcode information to the control system 300 of the sandblasting machine 1. The control system 300 of the sandblasting machine 1 associates the barcode information with the sandblasting information during the sandblasting process. Thus, by setting up the barcode scanner 400, the barcode information of the workpiece is associated with the sandblasting information, facilitating workpiece traceability and improving production yield. For example, before entering the sandblasting machine 1, the workpiece is scanned by the barcode scanner 400 to obtain its barcode information. After receiving the barcode information, the control system 300 starts controlling the sandblasting machine 1 to perform sandblasting operations on the workpiece and associates the barcode information with the sandblasting information. It also uploads the associated barcode information and sandblasting information to the background management system. In subsequent processes or traceability, the corresponding sandblasting information can be retrieved by inputting workpiece information into the background management system or by scanning the workpiece.

[0064] Understandably, the sandblasting machine 1 may also include more or fewer mechanisms or modules. For example, the sandblasting machine 1 may also include a clamping module (not shown), a hopper (not shown), an air pump (not shown), etc. The clamping module is used to clamp the workpiece and can drive the workpiece to rotate so that each nozzle 200 can spray the workpiece evenly. The hopper is used to hold the abrasive so that the nozzles 200 can continuously perform sandblasting operations on the workpiece. The air pump is used to provide compressed air.

[0065] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A detection system for detecting the air pressure at the nozzle of a sandblasting machine, characterized in that, include: The detector has a detection unit, a first output unit, and a second output unit. The detection unit is used to detect a first air pressure at the nozzle when the sandblasting machine is performing sandblasting, and to detect a second air pressure at the nozzle when the sandblasting machine stops sandblasting. The first output unit and the second output unit are both coupled to the detection unit. The first output unit is used to output a signal based on the first air pressure being within a preset range, and to stop outputting a signal based on the first air pressure exceeding the preset range. The second output unit is used to output a signal based on the second air pressure exceeding a preset value. A conversion module, coupled to the first output unit, is used to receive the output signal of the first output unit and output a warning signal when the first output unit stops outputting the signal; The warning module is coupled to the conversion module and the second output unit respectively, and is used to receive the warning signal for warning, and to receive the output signal of the second output unit for warning. The warning module includes a warning device, which is a signal transmitter. The signal transmitter sends the warning information to an industrial control computer, mobile device or wearable device through wired or wireless transmission.

2. The detection system as described in claim 1, characterized in that, The detection system also includes: The shutdown module is coupled to both the conversion module and the control system of the sandblasting machine, and is used to receive the warning signal and control the sandblasting machine to shut down according to a preset program through the control system.

3. The detection system as described in claim 2, characterized in that, The preset program is that when the time for the shutdown module to receive the warning signal reaches a preset time, it sends a shutdown signal to the control system of the sandblasting machine.

4. The detection system as described in claim 3, characterized in that, The preset time is 30 seconds.

5. The detection system as described in claim 1, characterized in that, The warning module includes: power supply; The first relay is electrically connected between the power supply and the alarm, and coupled to the conversion module, for energizing the power supply and the alarm when the alarm signal is received, so that the alarm issues an alarm message; The second relay is electrically connected between the power supply and the alarm, and coupled to the second output unit. When the output signal of the second output unit is received, it energizes the power supply and the alarm, causing the alarm to issue an alarm message.

6. The detection system as described in claim 5, characterized in that, The power supply is also electrically connected to the detector to provide power to the detector when the sandblasting machine is stopped.

7. The detection system as described in claim 5, characterized in that, The warning information is at least one of sound, light, or electricity.

8. The detection system as described in claim 1, characterized in that, The preset value is 0.01 MPa.

9. A sandblasting machine, characterized in that, The detection system includes any one of claims 1-8.

10. The sandblasting machine as described in claim 9, characterized in that, The sandblasting machine has a barcode scanner, which is used to scan the workpiece to be sandblasted and send the obtained barcode information to the sandblasting machine. The sandblasting machine is used to associate the barcode information with the sandblasting information when sandblasting the workpiece.

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