CN219417270U - Crack detection device - Google Patents

Abstract

The utility model provides a crack detection device relates to crack detection technical field, including the guard cabinet, workstation and integrated controller, the workstation sets up in the guard cabinet, integrated controller installs in one side of guard cabinet, be equipped with a plurality of visual windows on the guard cabinet, be equipped with the arm on the workstation, from right side to left side on the workstation in proper order material loading subassembly, the vacuum soaking case, washing tank and unloading subassembly, be equipped with the air-drying case that is used for carrying out the goods that await measuring and the heating case that is used for holding and heat the osmotic agent in the workstation, the heating case can provide the osmotic agent for the vacuum soaking case, the utility model makes osmotic agent enter into the crack of defect goods through the effect of vacuum negative pressure, improve the permeation rate, simultaneously osmotic agent is through heating, further improve permeation rate, improve detection efficiency, because the inside pressure of defect goods is less than the pressure of outside osmotic agent, osmotic agent can not flow from the crack of defect goods, avoid osmotic agent extravagant, practice thrift the detection cost, and guarantee the detection effect.

Description

Crack detection device

Technical Field

The application relates to the technical field of crack detection, in particular to a crack detection device.

Background

In the industrial production process, open defects such as cracks, looseness, air holes, slag inclusion, cold insulation, folding and the like exist on the surfaces of some metal parts or non-metal parts or materials, the open defects do not meet the production quality requirements, the open defects are selected through a crack detection device, and the open defects are detected in the crack detection device in a penetration detection mode, wherein the penetration detection is a conventional nondestructive detection method for detecting the open defects on the surfaces on the basis of capillary action principle.

However, when the existing crack detection device is used for immersing the product to be detected in the penetrating agent containing dye coloring or fluorescence, the penetrating agent is permeated into the surface opening defect simply by means of wetting of liquid and capillary action, the permeation speed is low, the detection efficiency is affected, the penetrating agent easily flows out of the surface opening defect after the product to be detected is taken out, the waste of the penetrating agent is easily caused, the detection cost is increased, and the detection effect is also affected.

Disclosure of Invention

An object of the embodiment of the application is to provide a crack detection device, which can solve the technical problem proposed by the background technology.

The embodiment of the application provides a crack detection device, which comprises a protection cabinet, a workbench and a comprehensive controller, wherein the workbench is arranged in the protection cabinet, the comprehensive controller is arranged on one side of the protection cabinet, and a plurality of visual windows are arranged on the protection cabinet;

the automatic cleaning machine is characterized in that a mechanical arm is arranged on the workbench, a feeding component for conveying a product to be tested, a vacuum soaking box for soaking the product to be tested, a cleaning tank for cleaning the product to be tested and a discharging component for conveying the product to be tested are sequentially arranged on the workbench from right to left, the feeding component, the vacuum soaking box, the cleaning tank and the discharging component are all located below the mechanical arm, an air drying box for drying the product to be tested is arranged in the workbench, the air drying box is located under the discharging component, and a through hole is formed in the workbench between the air drying box and the discharging component;

the workbench is internally provided with a heating box for containing and heating the penetrating agent, and the heating box can provide the penetrating agent for the vacuum soaking box.

Further, the mechanical arm comprises a supporting seat, a sliding rod, a screw rod, a motor, a sliding block, a mechanical clamping jaw and a clamping jaw cylinder, wherein the sliding rod is fixedly installed on the supporting seat, the motor is used for driving the screw rod to rotate on the supporting seat, the sliding block is movably connected with the sliding rod, the sliding block is in threaded connection with the screw rod, the clamping jaw cylinder is installed on the sliding block, and the mechanical clamping jaw is installed at the telescopic end of the clamping jaw cylinder.

Further, the material loading subassembly includes the material loading support, and first linear module, loading board, fretwork hole container and positioning sensor, linear module passes through the material loading support is installed on the workstation, the loading board is installed on the linear slip table of first linear module, be equipped with spacing hole on the loading board, the fretwork hole container is placed in spacing downthehole, positioning sensor installs on the material loading support.

Further, the vacuum soaking box comprises a soaking box body, a soaking box sealing cover and a vacuum pump, wherein the soaking box body is arranged on the workbench, a guide groove is formed in the top of the soaking box body, the soaking box sealing cover is in sliding connection with the guide groove, a second linear module is arranged on one side of the soaking box body, the soaking box sealing cover is arranged on a linear sliding table of the second linear module, and the vacuum pump is connected with the soaking box body.

Further, a liquid level sensor and a vacuum sensor are arranged in the soaking box body, and a ventilation electromagnetic valve is arranged on the sealing cover of the soaking box.

Furthermore, guide shafts are arranged on two sides of the cleaning tank, a tank sealing cover is slidably arranged on the guide shafts, and a sealing cover cylinder for driving the tank sealing cover to move on the guide shafts is arranged on one side of the cleaning tank.

Further, the air-drying box is internally provided with an air distribution plate and a plurality of air dryers, the air dryers are uniformly arranged on one side of the air-drying box, and the air distribution plate is arranged in front of the air dryers.

Further, the unloading assembly comprises an unloading support, a third linear module, an unloading plate, an infrared sensor and an alarm, wherein the third linear module is installed on the workbench through the unloading support, the unloading plate is installed on a linear sliding table of the third linear module, the infrared sensor is installed on the unloading support, and the alarm is installed on the protection cabinet.

Further, the heating box comprises a solution tank body, a solution tank sealing cover and a heating pipe, wherein the solution tank sealing cover is arranged at the top of the solution tank body, the heating pipe is arranged on the solution tank body, the solution tank body is connected with a pipeline, the pipeline is connected with the bottom of the soaking box body, and a liquid electromagnetic valve is arranged on the pipeline.

Further, a temperature sensor is arranged in the solution tank body, and a temperature controller is arranged at one side of the solution tank body.

The utility model has the beneficial effects that:

according to the utility model, the product to be detected is placed in the vacuum soaking box, negative pressure is formed in the vacuum soaking box, then the heating box is used for providing the heated penetrating agent into the vacuum soaking box, the penetrating agent enters into gaps of the defective product under the action of the negative pressure, the penetrating speed is high, the penetrating agent is active in internal molecules after being heated and is easier to penetrate into the gaps of the defective product, the penetrating speed is further improved, the detection efficiency is improved, and the penetrating agent cannot flow out from the gaps of the defective product due to the fact that the internal pressure of the defective product is lower than the external penetrating agent, so that the waste of the penetrating agent is avoided, the detection cost is saved, and the detection effect is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of some embodiments of the present application;

FIG. 2 is a schematic illustration of an uninstalled protective cabinet in some embodiments of the present application;

FIG. 3 is a schematic structural diagram of a feeding assembly according to some embodiments of the present application;

FIG. 4 is a schematic diagram of the vacuum soaking tank and the heating tank according to some embodiments of the present application;

FIG. 5 is a right side view of a vacuum soak tank and a heating tank in some embodiments of the present application;

FIG. 6 is a schematic structural view of a cleaning tank in some embodiments of the present application;

FIG. 7 is a schematic view of the structure of an air-drying box without air distribution plates according to some embodiments of the present application;

FIG. 8 is a schematic view of a discharge assembly in some embodiments of the present application;

the reference numerals are respectively:

100. a protective cabinet; 110. a visual window; 200. a work table; 300. a comprehensive controller;

400. a mechanical arm; 410. a support base; 420. a slide bar; 430. a screw rod; 440. a motor; 450. a slide block; 460. mechanical clamping jaws; 470. a clamping jaw cylinder;

500. a feeding assembly; 510. a feeding support; 520. a first linear module; 530. a loading plate;

531. a limiting hole; 540. hollowed Kong Rongqi; 550. positioning a sensor;

600. a vacuum soaking box; 610. a soaking box body; 611. a guide groove; 612. a second linear module; 613. a liquid level sensor; 614. a vacuum sensor; 620. sealing cover of soaking box; 621. a vent solenoid valve; 630. a vacuum pump;

700. a cleaning tank; 710. a guide shaft; 720. a groove body sealing cover; 730. sealing the cover cylinder;

800. an air drying box; 810. a wind distribution plate; 820. an air dryer;

900. a discharge assembly; 910. a discharging support; 920. a third linear module; 930; a stripper plate;

940. an infrared sensor; 950. an alarm;

1000. a heating box; 1010. a solution tank body; 1011. a pipe; 1012. a liquid solenoid valve;

1013. a temperature sensor; 1014. a temperature controller; 1020. a solution tank sealing cover; 1030. and (5) heating the pipe.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Specific examples:

as shown in fig. 1 and 2, this application provides a crack detection device, including the guard cabinet 100, workstation 200 and integrated controller 300, the workstation 200 sets up in the guard cabinet 100, integrated controller 300 installs in one side of guard cabinet 100, be equipped with a plurality of visual windows 110 on the guard cabinet 100, be equipped with arm 400 on the workstation 200, be equipped with the material loading subassembly 500 that is used for carrying the goods to be tested on the workstation 200 from right to left in proper order, be used for carrying out the vacuum soaking box 600 that soaks with the goods to be tested, be used for carrying out abluent washing tank 700 with the goods to be tested and be used for carrying the unloading subassembly 900 of goods to be tested, material loading subassembly 500, vacuum soaking box 600, washing tank 700 and unloading subassembly 900 all are located the below of arm, be equipped with the air-drying box 800 that is used for carrying out the goods to be tested in the air-drying in the workstation 200, air-drying box 800 is located the air-drying under of unloading subassembly 900, be equipped with the through-hole on the workstation between air-drying box 800 and unloading subassembly 900, can remove the goods to be tested to corresponding position through arm 400 and handle, be equipped with in the workstation 200 and be used for holding and heating the osmotic agent, be used for carrying out the heating box 1000, soaking box 1000, be used for carrying out abluent and carrying out the vacuum osmotic agent to soak box 600, can provide the defect to the inside crack can not provide the inside crack to the vacuum osmotic agent, and vacuum osmotic agent can be provided in the vacuum osmotic agent 600, and vacuum osmotic agent can be used for detecting the inside crack is low in the vacuum osmotic agent.

As shown in fig. 2, the mechanical arm 400 includes a supporting seat 410, a sliding rod 420, a screw rod 430, a motor 440, a sliding block 450, a mechanical clamping jaw 460 and a clamping jaw air cylinder 470, wherein the sliding rod 420 is fixedly installed on the supporting seat 410, the motor 440 is used for driving the screw rod 430 to rotate on the supporting seat 410, the sliding block 450 is movably connected with the sliding rod 420, the sliding block 450 is in threaded connection with the screw rod 430, the clamping jaw air cylinder 470 is installed on the sliding block 450, the mechanical clamping jaw 460 is installed at the telescopic end of the clamping jaw air cylinder 470, the motor 440 drives the screw rod 430 to rotate so as to drive the sliding block 450 to move, the sliding rod 420 enables the sliding block 450 to move stably and have a guiding function, the clamping jaw air cylinder 470 drives the mechanical clamping jaw 460 to move up and down so as to clamp a product to be tested, then the position is moved, the position of the product to be tested is automatically adjusted, and the labor intensity is reduced.

As shown in fig. 2 and 3, the feeding assembly 500 includes a feeding support 510, a first linear module 520, a feeding plate 530, a hollow Kong Rongqi and a positioning sensor 550, the linear module is installed on the workbench 200 through the feeding support 510, the feeding plate 530 is installed on a linear sliding table of the first linear module 520, a limiting hole 531 is formed in the feeding plate 530, the hollow Kong Rongqi 540 is placed in the limiting hole 531, the positioning sensor 550 is installed on the feeding support 510, a product to be tested is placed in the hollow Kong Rongqi, the hollow hole container 540 can avoid influencing the contact between a penetrating agent and the surface of the product to be tested, the penetrating effect is ensured, the feeding plate 530 is driven to move through the first linear module 520, the hollow Kong Rongqi is driven to move, and when the hollow hole container 540 moves below the mechanical clamping jaw 460, the positioning sensor 550 senses and transmits signals to the integrated controller 300, the first linear module 520 is controlled by the integrated controller 300 to stop the movement of the feeding plate 530, and the mechanical clamping jaw 460 is waited for taking the hollow hole container 540 into the vacuum soaking box 600.

As shown in fig. 2 and 4, the vacuum soaking box 600 includes a soaking box body 610, a soaking box sealing cover 620 and a vacuum pump 630, the soaking box body 610 is mounted on the workbench 200, a guide groove 611 is provided at the top of the soaking box body 610, the soaking box sealing cover 620 is slidably connected with the guide groove 611, a second linear module 612 is provided at one side of the soaking box body 610, the soaking box sealing cover 620 is mounted on a linear sliding table of the second linear module 612, the vacuum pump 630 is connected with the soaking box body 610, the soaking box sealing cover 620 is driven to open or close the soaking box body 610 by the second linear module 612, and when the soaking box sealing cover 620 closes the soaking box body 610, the gas in the vacuum soaking box 600 can be pumped away by the vacuum pump 630, so that the vacuum bubble box is in a vacuum state.

As shown in fig. 4, a liquid level sensor 613 and a vacuum sensor 614 are installed in the soaking tank body 610, a ventilation solenoid valve 621 is installed on the soaking tank sealing cover 620, the liquid level of the penetrating agent in the vacuum soaking tank 600 is monitored by the liquid level sensor 613, when the penetrating agent reaches a preset liquid level, the penetrating agent is stopped from being input into the vacuum soaking tank 600, the vacuum sensor 614 is used for detecting the gas pressure in the vacuum soaking tank 600, when the vacuum pump 630 pumps out the gas in the soaking tank body 610, the vacuum pump 630 stops working when the pressure in the soaking tank body 610 reaches the preset pressure, the ventilation solenoid valve 621 is used for controlling the communication between the vacuum soaking tank 600 and the atmosphere or closing, and note that the ventilation solenoid valve 621 is in a closed state when the gas in the vacuum soaking tank 600 needs to be pumped out.

As shown in fig. 2 and fig. 6, guide shafts 710 are installed at two sides of the cleaning tank 700, a tank sealing cover 720 is slidably installed on the guide shafts 710, a sealing cover cylinder 730 for driving the tank sealing cover 720 to move on the guide shafts 710 is arranged at one side of the cleaning tank 700, the tank sealing cover 720 is driven to move on the guide shafts 710 by the sealing cover cylinder 730, and accordingly the cleaning tank 700 is opened or closed.

As shown in fig. 2 and fig. 7, an air distribution plate 810 and a plurality of air dryers 820 are arranged in the air drying box 800, the plurality of air dryers 820 are uniformly arranged on one side of the air drying box 800, the air distribution plate 810 is arranged in front of the air dryers 820, the air dryers 820 blow hot air out of the air drying box 800, the cleaned product to be tested is air-dried, preferably, six air dryers 820 are arranged in the embodiment, and then the hot air blown to the product to be tested through the air distribution plate 810 is uniformly distributed, so that the air drying effect is better.

As shown in fig. 2 and 8, the discharge assembly 900 includes a discharge support 910, a third linear module 920, a discharge plate, and an infrared sensor 930; a stripper plate; 940 and an alarm 950, the third linear module 920 is mounted on the table 200 through a discharge support 910, a discharge plate is mounted on a linear sliding table of the third linear module 920, and an infrared sensor 930; a stripper plate; 940 is installed on the unloading support 910, an alarm 950 is installed on the protection cabinet 100, the mechanical arm 400 places the air-dried product to be tested on the unloading plate, and the third linear module 920 drives the unloading plate to move and the infrared sensor 930; a stripper plate; 940 senses that the product to be tested exists on the stripper plate, at this time, the alarm 950 prompts the operator to take the product to be tested, and the operator judges whether the product to be tested has defects by observing the penetrating agent on the surface of the product to be tested, and notices that the penetrating agent is colored by dye or is subjected to fluorescent treatment.

As shown in fig. 2, 4 and 5, the heating tank 1000 includes a solution tank body 1010, a solution tank seal and a heating pipe 1030, the solution tank seal 1020 is installed at the top of the solution tank body 1010, the heating pipe 1030 is installed at the solution tank body 1010, the solution tank body 1010 is connected with a pipe 1011, the pipe 1011 is connected with the bottom of the soaking tank body 610, a liquid solenoid valve 1012 is installed on the pipe 1011, when the vacuum pump 630 pumps the gas in the vacuum soaking tank 600, the liquid solenoid valve 1012 is in a closed state, and the heating pipe 1030 heats the penetrating agent in the solution tank body 1010, when the pressure in the vacuum soaking tank 600 reaches a preset pressure value, the vacuum pump 630 stops the operation, at this time, the liquid solenoid valve 1012 is opened, the penetrating agent in the solution tank body 1010 flows into the vacuum soaking tank 600 under the action of the pressure difference, and when the liquid level sensor 613 senses that the penetrating agent reaches the preset liquid level, the liquid solenoid valve 1012 is closed.

As shown in fig. 4, a temperature sensor 1013 is installed in the tank body 1010, a temperature controller 1014 is installed at one side of the tank body 1010, the temperature of the penetrant in the tank body 1010 is monitored by the temperature sensor 1013, and when the penetrant is heated by the heating pipe 1030 to a preset temperature, the temperature controller 1014 controls the heating pipe 1030 to stop the operation.

Working principle:

the penetrating agent containing dye coloring or fluorescent agent is placed into the heating box 1000, the product to be detected is placed into the hollow Kong Rongqi, then the hollow Kong Rongqi is placed into the limit hole 531 of the feeding plate 530, the first linear module 520 is started, the feeding plate 530 is moved, the position of the feeding plate 530 is sensed by the positioning sensor 550, when the feeding plate 530 is below the mechanical clamping jaw 460 of the mechanical arm 400, the first linear module 520 stops working, the mechanical arm 400 clamps the hollow hole container 540 to be moved above the vacuum soaking box 600, the soaking box sealing cover 620 is opened, the mechanical arm 400 clamps the hollow hole container 540 to be moved into the soaking box body 610, then the mechanical arm 400 releases the clamp of the hollow Kong Rongqi 540 and moves to be above the vacuum soaking box 600, the soaking box sealing cover 620 is closed, the vacuum pump 630 is started, vacuum operation is performed in the vacuum soaking box 600, meanwhile the heating pipe 1030 heats the penetrating agent in the heating box 1000, when the pressure in the vacuum soaking box 600 is sensed by the vacuum sensor, the vacuum pump 630 stops working, when the temperature of the penetrating agent is sensed by the temperature sensor 1013 and fed back to the temperature sensor 1013, when the temperature of the penetrating agent reaches the preset value, the temperature controller 1014 controls the heating pipe 1030 to stop heating, at the moment, the liquid electromagnetic valve 1012 on the pipeline 1011 is opened, penetrating liquid enters the soaking box body 610 under the action of pressure difference to perform soaking work on the product to be detected, wherein when the liquid level in the soaking box body 610 is sensed by the sensor, the liquid level electromagnetic valve is closed, after a certain period of soaking, the ventilation electromagnetic valve 621 is opened, the vacuum soaking box 600 is communicated with the atmosphere to release pressure, the liquid level electromagnetic valve is opened, the penetrating agent flows back into the heating box 1000 through the pipeline 1011 under the action of gravity, after the product to be detected is stationary for a certain period of time, soaking box sealing cover 620, arm 400 moves down and presss from both sides the hollow hole container 540 and get, still and control after rocking for a period of time, residual osmotic agent is basically dispelled, arm 400 centre gripping hollow hole container 540 moves to washing tank 700 top, the sealed 720 of cell body opens, arm 400 centre gripping fretwork Kong Rongqi 540 is put into the alcohol in washing tank 700 and is rocked the washing about reciprocating, after further wasing the prescribed time with residual osmotic agent, arm 400 centre gripping fretwork Kong Rongqi passes discharge assembly 900 and puts into air-drying box 800 and air-dries, after the prescribed time air-dries, arm 400 centre gripping hollow hole container 540 moves up to discharge assembly 900 top, then third linear module 920 drives stripper 930 to remove Kong Rongqi 540 below, arm 400 places fretwork Kong Rongqi 540 on stripper 930, infrared sensor 940 senses the goods to be tested on the stripper, at this moment, the staff is reminded to the staff, simultaneously, the stripper drives fretwork Kong Rongqi 540 outwards to take the goods to be tested and judge whether the goods to be tested have defects through observing the osmotic agent on surface of goods to be tested.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. A crack detection device, characterized in that: the automatic protection device comprises a protection cabinet, a workbench and a comprehensive controller, wherein the workbench is arranged in the protection cabinet, the comprehensive controller is arranged on one side of the protection cabinet, and a plurality of visual windows are arranged on the protection cabinet;

the automatic cleaning machine is characterized in that a mechanical arm is arranged on the workbench, a feeding component for conveying a product to be tested, a vacuum soaking box for soaking the product to be tested, a cleaning tank for cleaning the product to be tested and a discharging component for conveying the product to be tested are sequentially arranged on the workbench from right to left, the feeding component, the vacuum soaking box, the cleaning tank and the discharging component are all located below the mechanical arm, an air drying box for drying the product to be tested is arranged in the workbench, the air drying box is located under the discharging component, and a through hole is formed in the workbench between the air drying box and the discharging component;

the workbench is internally provided with a heating box for containing and heating the penetrating agent, and the heating box can provide the penetrating agent for the vacuum soaking box.

2. A crack detection device as claimed in claim 1, characterized in that: the mechanical arm comprises a supporting seat, a sliding rod, a screw rod, a motor, a sliding block, a mechanical clamping jaw and a clamping jaw cylinder, wherein the sliding rod is fixedly installed on the supporting seat, the motor is used for driving the screw rod to rotate on the supporting seat, the sliding block is movably connected with the sliding rod, the sliding block is in threaded connection with the screw rod, the clamping jaw cylinder is installed on the sliding block, and the mechanical clamping jaw is installed at the telescopic end of the clamping jaw cylinder.

3. A crack detection device as claimed in claim 1, characterized in that: the feeding assembly comprises a feeding support, a first linear module, a feeding plate, a hollowed-out hole container and a positioning sensor, wherein the linear module is installed on the workbench through the feeding support, the feeding plate is installed on a linear sliding table of the first linear module, a limiting hole is formed in the feeding plate, the hollowed-out hole container is placed in the limiting hole, and the positioning sensor is installed on the feeding support.

4. A crack detection device as claimed in claim 1, characterized in that: the vacuum soaking box comprises a soaking box body, a soaking box sealing cover and a vacuum pump, wherein the soaking box body is arranged on the workbench, a guide groove is formed in the top of the soaking box body, the soaking box sealing cover is in sliding connection with the guide groove, a second linear module is arranged on one side of the soaking box body, the soaking box sealing cover is arranged on a linear sliding table of the second linear module, and the vacuum pump is connected with the soaking box body.

5. The crack detection device as defined in claim 4, wherein: the immersion tank is characterized in that a liquid level sensor and a vacuum sensor are arranged in the immersion tank body, and a ventilation electromagnetic valve is arranged on the immersion tank sealing cover.

6. A crack detection device as claimed in claim 1, characterized in that: guide shafts are arranged on two sides of the cleaning tank, a tank sealing cover is slidably arranged on the guide shafts, and a sealing cover cylinder for driving the tank sealing cover to move on the guide shafts is arranged on one side of the cleaning tank.

7. A crack detection device as claimed in claim 1, characterized in that: the air-drying box is internally provided with an air distribution plate and a plurality of air dryers, the air dryers are uniformly arranged on one side of the air-drying box, and the air distribution plate is arranged in front of the air dryers.

8. A crack detection device as claimed in claim 1, characterized in that: the discharging assembly comprises a discharging support, a third linear module, a discharging plate, an infrared sensor and an alarm, wherein the third linear module is installed on the workbench through the discharging support, the discharging plate is installed on a linear sliding table of the third linear module, the infrared sensor is installed on the discharging support, and the alarm is installed on the protection cabinet.

9. The crack detection device as defined in claim 4, wherein: the heating box comprises a solution tank body, a solution tank sealing cover and a heating pipe, wherein the solution tank sealing cover is arranged at the top of the solution tank body, the heating pipe is arranged on the solution tank body, the solution tank body is connected with a pipeline, the pipeline is connected with the bottom of the soaking box body, and a liquid electromagnetic valve is arranged on the pipeline.

10. The crack detection device as defined in claim 9, wherein: the temperature sensor is arranged in the solution tank body, and the temperature controller is arranged at one side of the solution tank body.