Die surface hardness nondestructive testing equipment

Abstract

The invention discloses mold surface hardness nondestructive testing equipment, and relates to the technical field of hardness nondestructive testing equipment, the mold surface hardness nondestructive testing equipment comprises a detection mechanism and a handle, the detection mechanism is internally provided with an auxiliary mechanism, and the auxiliary mechanism comprises a liquid storage tank, a concave block, a rectangular hole, two magnetic strips, a gear pump and a placement rack; a concave block is fixed to the top of the auxiliary mechanism, a discharging hole is formed in the top of the auxiliary mechanism, a round pipe communicated with the interior of the discharging hole is fixed to the top of the concave block, a pipe cover is fixed to the top of the round pipe, a motor is additionally arranged at the top of the pipe cover, and a rotating plate is arranged in the round pipe. Therefore, the use requirement of the mold hardness nondestructive testing equipment for workers is reduced, the time of mold surface hardness nondestructive testing is shortened, the testing efficiency is improved, and the use efficiency of the mold surface hardness nondestructive testing equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of non-destructive testing equipment for hardness, specifically to a non-destructive testing equipment for the surface hardness of a mold. Background Technology

[0002] Molds are tools used in industrial production to shape items. They are mainly used to shape materials into the required shapes and sizes under certain process conditions through specific cavities and structures.

[0003] Since molds need to withstand complex conditions such as high temperature, high pressure, and friction during the production process, their surface hardness is crucial to the service life of the mold, product quality, and production efficiency. Therefore, workers usually use non-destructive testing equipment to perform hardness non-destructive testing on the mold before it is used for parts production.

[0004] However, existing non-destructive testing equipment for mold surface hardness has the following shortcomings:

[0005] Current non-destructive testing equipment for hardness mainly focuses on non-destructively testing the hardness of mold surfaces. However, it lacks the function of uniformly applying coupling agent to the probe end face of the ultrasonic probe. This is usually done manually, which requires operators to master the appropriate amount of coating and ensure uniformity. This greatly increases the difficulty of non-destructive testing of mold surface hardness and the time required, thus reducing testing efficiency.

[0006] Therefore, we propose a new non-destructive testing device for mold surface hardness to solve the problems mentioned in the background art. Summary of the Invention

[0007] The purpose of this invention is to provide a non-destructive testing device for mold surface hardness. By setting an auxiliary mechanism, a coupling agent can be uniformly applied to the probe end face of the ultrasonic probe in the non-destructive testing device, thereby reducing the operator requirements of the non-destructive testing device for mold surface hardness, reducing the time for non-destructive testing of mold surface hardness, and improving the testing efficiency, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a non-destructive testing device for the surface hardness of a mold, comprising a testing mechanism and a handle, wherein the testing mechanism is used to perform non-destructive testing on the surface hardness of the mold, and an auxiliary mechanism is provided inside the testing mechanism, wherein the auxiliary mechanism is used to uniformly apply coupling agent to the probe end face of the testing probe;

[0009] The auxiliary mechanism includes a storage tank, a concave block, a rectangular hole, two magnetic strips, a gear pump, and a placement rack. The top of the inner wall of the concave block has a pre-set outlet hole for discharging the coupling agent. A circular tube connected to the inside of the outlet hole is fixed to the top of the concave block. A tube cap is fixed to the top of the circular tube. A motor is installed on the top of the tube cap. A rotating plate is provided inside the circular tube. The motor, rotating plate, and circular tube are used to push the coupling agent delivered to the inside of the circular tube to the outlet hole. The inlet and outlet of the gear pump are both connected to a delivery pipe.

[0010] Preferably, the bottom end of the rotating shaft of the rotating plate is rotatably embedded in the top of the concave block, the bottom of the actuating plate of the rotating plate is in contact with the top of the concave block, the side of the actuating plate of the rotating plate is in contact with the inner wall of the round tube, the top of the actuating plate of the rotating plate is in contact with the bottom of the tube cover, and the top end of the rotating shaft of the rotating plate moves through the bottom of the tube cover.

[0011] Preferably, the output end of the motor is installed with the top of the rotating shaft of the rotating plate, one of the inlet ends of the conveying pipe is connected to the bottom outlet end of the storage tank, and the outlet end of the other conveying pipe is connected to the top inlet end of the pipe cover. An L-shaped plate is movably passed through the inner wall of the concave block, and the upper side of the L-shaped plate is in contact with the top of the inner wall of the concave block.

[0012] Preferably, the contact surfaces of the two magnetic strips are connected by opposite magnetic poles, one of the magnetic strips is fixedly embedded on the surface of the L-shaped plate, the gear pump is mounted on the top of the placement frame, the liquid storage tank and the concave block are both fixed on the top of the placement frame, and the interior of the rectangular hole and the interior of the concave block are connected.

[0013] Preferably, the detection mechanism includes a housing, a rectangular hole pre-set in the inner wall of the housing, another magnetic strip fixedly embedded in the outer wall of the housing, a handle attached to the top of the housing, a frame provided inside the housing, a placement rack fixed on the frame, and a front cover plate attached to the front end face of the housing, the surface of the front cover plate being in contact with the surface of the frame.

[0014] Preferably, a display screen and a switch button are installed on the surface of the front cover. The display end, control end and button end of the display screen and the switch button are respectively movably fitted into the adapter holes reserved in the front cover. A storage shell is fixed on the surface of the front cover near the bottom. The bottom of the storage shell is in contact with the bottom of the inner wall of the frame. A connecting hole is preset on the surface of the front cover near the bottom.

[0015] Preferably, the interior of the connecting hole is connected to the interior of the storage shell, a rectangular plate is installed at the opening of the connecting hole, an ultrasonic probe is placed inside the storage shell, a rear cover plate is provided on the rear end face of the shell, the surface of the rear cover plate is in contact with the surface of the shell, and the surface of the rear cover plate is fixed to the surface of the frame.

[0016] Preferably, each heat dissipation hole reserved on the rear cover plate is fixed with a ventilation grille, and multiple fans are installed on the surface of the rear cover plate. The air outlet of each fan corresponds to each heat dissipation hole reserved on the rear cover plate. An ultrasonic generator is installed on the top of the inner wall of the frame, and a switching power supply, a microprocessor, and an adapter board are installed on the bottom of the inner wall of the frame.

[0017] Preferably, a wireless interface component and a power socket are installed on the surface of the rear cover near the bottom. The connection end of the wireless interface component and the connection end of the power socket are respectively movably fitted into the adapter hole reserved on the rear cover. Two symmetrical locking blocks movably pass through the inner wall of the frame, and the opposite ends of the two locking blocks are slidably embedded in the inner wall of the outer shell.

[0018] Preferably, the surface of the storage shell has two symmetrical slots, and the opposite ends of the two blocks are respectively located inside the two slots. The connection end of the wireless interface assembly is equipped with a wireless antenna. The outer wall of the shell has an auxiliary hole for the interface on the adapter board to communicate with the outside.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. By setting up an auxiliary mechanism, the present invention can uniformly apply coupling agent to the probe end face of the ultrasonic probe in the hardness non-destructive testing equipment, thereby reducing the requirements of the operator for the use of the mold hardness non-destructive testing equipment, thereby reducing the time for mold surface hardness non-destructive testing, improving the testing efficiency, and thus improving the utilization efficiency of the mold surface hardness non-destructive testing equipment. When the ultrasonic probe needs to be coated with coupling agent, the L-shaped plate is removed first, and a paper tube made of polyester film paper is fixed inside the discharge hole.

[0021] 2. The present invention then utilizes the cooperation of a display screen, a microprocessor, a motor drive chip, a gear pump, and two delivery pipes to extract the coupling agent from the storage tank and deliver it into the space composed of a round tube, the top of a concave block, the bottom of a tube cap, and one side of a rotating plate. Then, by utilizing the cooperation of the display screen, microprocessor, motor drive chip, motor, rotating plate, round tube, concave block, and tube cap, the space left in the paper tube inside the discharge hole can be filled with coupling agent. After that, the probe end of the ultrasonic probe is moved out from inside the paper tube, and then moved out from inside the concave block and the rectangular hole in sequence, so that a layer of coupling agent can be evenly applied to the probe end face of the ultrasonic probe.

[0022] 3. This invention, by setting up a detection mechanism, can perform non-destructive testing of the hardness of the mold surface, thereby preventing molds with unqualified hardness from being used to manufacture parts. When non-destructive testing of the mold surface hardness is required, the ultrasonic probe can be connected to the adapter plate using the connecting hole. Then, with the help of the auxiliary mechanism, coupling agent can be evenly applied to the probe end of the ultrasonic probe. Next, with the cooperation of the display screen, microprocessor, ultrasonic generator, adapter plate, and ultrasonic probe, the measured data can be transmitted to the microprocessor. Then, with the help of the microprocessor, the hardness value of the measured mold surface can be calculated and displayed on the display screen for the staff to view intuitively. Attached Figure Description

[0023] Figure 1 This is a side-view perspective view of a non-destructive testing device for the surface hardness of a mold according to the present invention.

[0024] Figure 2 This is a bottom-view sectional perspective view of a non-destructive testing device for the surface hardness of a mold according to the present invention.

[0025] Figure 3 This is another perspective view of the non-destructive testing equipment for mold surface hardness according to the present invention;

[0026] Figure 4 This is a partial perspective view of a non-destructive testing device for the surface hardness of a mold according to the present invention.

[0027] Figure 5 This is a three-dimensional structural diagram of the back cover plate, frame, concave block, pipe cover, motor, gear pump, conveying pipe and placement rack of a mold surface hardness non-destructive testing equipment of the present invention;

[0028] Figure 6 This is a perspective cross-sectional view of another part of the auxiliary mechanism of a non-destructive testing device for mold surface hardness according to the present invention.

[0029] Figure 7 This is a perspective view of the testing mechanism of a non-destructive testing device for mold surface hardness according to the present invention.

[0030] Figure 8 This is a perspective view of the testing mechanism of a non-destructive testing device for mold surface hardness according to the present invention, viewed from below.

[0031] Figure 9 This is a three-dimensional structural diagram of the L-shaped plate and magnetic strip of the mold surface hardness non-destructive testing equipment of the present invention.

[0032] In the diagram: 1. Testing mechanism; 101. Outer casing; 102. Front cover; 103. Display screen; 104. Storage casing; 105. Connecting hole; 106. Rectangular plate; 107. Ultrasonic probe; 108. Ventilation grille; 109. Fan; 110. Ultrasonic generator; 111. Switching power supply; 112. Wireless interface assembly; 113. Power socket; 114. Microprocessor; 115. Adapter board; 116. Switch button; 117. 118. Card slot; 119. Rear cover plate; 120. Frame; 121. Wireless antenna; 122. Auxiliary hole; 2. Handle; 3. Auxiliary mechanism; 301. Liquid storage tank; 302. Rectangular hole; 303. Concave block; 304. L-shaped plate; 305. Discharge hole; 306. Round tube; 307. Tube cover; 308. Motor; 309. Rotating plate; 310. Magnetic strip; 311. Gear pump; 312. Conveying pipe; 313. Placement rack. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-5 , Figure 7 and Figure 8As shown, the present invention provides a technical solution: a non-destructive testing device for mold surface hardness, including a testing mechanism 1 and a handle 2. The testing mechanism 1 is used for non-destructive testing of mold surface hardness. The testing mechanism 1 includes a housing 101, with a frame 120 inside the housing 101. A front cover plate 102 is installed on the front end face of the housing 101, and the surface of the front cover plate 102 is in contact with the surface of the frame 120. A display screen 103 and a switch button 116 are installed on the surface of the front cover plate 102. The display end, control end of the display screen 103, and button end of the switch button 116 are respectively movably sleeved on the front cover plate 102. Inside the adapter hole, a storage shell 104 is fixed to the surface of the front cover 102 near the bottom. The bottom of the storage shell 104 contacts the bottom of the inner wall of the frame 120. A connecting hole 105 is pre-set on the surface of the front cover 102 near the bottom. The interior of the connecting hole 105 is connected to the interior of the storage shell 104. A rectangular plate 106 is installed at the opening of the connecting hole 105. An ultrasonic probe 107 is placed inside the storage shell 104. A rear cover 119 is provided on the rear end face of the outer shell 101. The surface of the rear cover 119 contacts the surface of the outer shell 101. The surface of the rear cover 119 is in contact with the surface of the frame 120. The surface is fixed, and each heat dissipation hole reserved on the rear cover 119 is fitted with a ventilation grille 108. Multiple fans 109 are installed on the surface of the rear cover 119, and the air outlet of each fan 109 corresponds to each heat dissipation hole reserved on the rear cover 119. An ultrasonic generator 110 is installed on the top of the inner wall of the frame 120, and a switching power supply 111, a microprocessor 114, and an adapter board 115 are installed on the bottom of the inner wall of the frame 120. A wireless interface assembly 112 and a power socket 113 are installed on the surface of the rear cover 119 near the bottom. The connection end of the wireless interface assembly 112 and the power socket 113 are connected to each other. The connecting ends of the base 113 are movably fitted into the adapter holes reserved on the rear cover plate 119. The inner wall of the frame 120 has two symmetrical locking blocks 117 that movably pass through it. The opposite ends of the two locking blocks 117 are slidably embedded in the inner wall of the outer shell 101. The surface of the storage shell 104 has two symmetrical slots 118. The opposite ends of the two locking blocks 117 are respectively located inside the two slots 118. The connecting end of the wireless interface component 112 is equipped with a wireless antenna 121. The outer wall of the outer shell 101 has an auxiliary hole 122. The auxiliary hole 122 is used for the interface on the adapter plate 115 to communicate with the outside.

[0035] In this embodiment, when non-destructive testing of the mold surface hardness is required, the rectangular plate 106 is first removed from the connecting hole 105. Then, the ultrasonic probe 107 placed inside the storage shell 104 is taken out through the connecting hole 105. Next, the wire connector of the ultrasonic probe 107 is connected to the adapter plate 115 through the auxiliary hole 122. Then, using the paper tube made of polyester film paper and the auxiliary mechanism 3, a coupling agent is evenly applied to the detection end face of the ultrasonic probe 107. When the coupling agent is evenly applied to the detection end of the ultrasonic probe 107, the detection end of the ultrasonic probe 107 coated with coupling agent is brought into contact with the mold surface. Then, using the cooperation of the display screen 103 and the microprocessor 114, the ultrasonic probe 107 is directed to the surface of the mold. The ultrasonic generator 110 and all fans 109 issue a start command. Upon receiving this command, the ultrasonic generator 110 generates a high-frequency electrical signal, which is transmitted to the ultrasonic probe 107 via the adapter plate 115. The ultrasonic probe 107, upon receiving the signal, converts it into mechanical vibration, generating ultrasonic pulses. These pulses, with a specific frequency and wavelength, are coupled to the mold surface via a coupling agent. The ultrasonic waves entering the mold then undergo reflection, refraction, and scattering when encountering different structural or hardness regions within the mold. After propagating a distance within the mold, some ultrasonic waves return to the mold surface and are received by the ultrasonic probe 107, which then processes them. Mechanical vibration is converted into an electrical signal, which is then transmitted to the microprocessor 114 via the adapter board 115. The microprocessor 114 amplifies and filters the received electrical signal, and stores the processed data in its memory. Simultaneously, it analyzes the processed data based on the measured ultrasonic propagation time, propagation distance, known material properties, and data model to calculate the surface hardness of the mold. The calculated data is then transmitted to the display screen 103 and displayed on its screen. The calculated hardness data is also stored in its memory. At the same time, all the fans 109 activated engage with pre-drilled holes in the housing 101 to draw in low-temperature air from the environment. Then, by utilizing the low-temperature air entering the housing 101, all the activated fans 109, the adapter holes reserved on the rear cover 119, and all the ventilation grilles 108, the heat distributed inside the space composed of the housing 101, the front cover 102, and the rear cover 119 is removed. When it is necessary to upload the calculated mold surface hardness data to a remote server via the network, the data stored in the memory on the microprocessor 114 can be uploaded to the remote server directly by using the wireless interface component 112, the display screen 103, and the wireless antenna 121. When it is necessary to perform another non-destructive test on the mold surface hardness, the probe end of the ultrasonic probe 107 should be cleaned first, and then the above operation steps should be repeated.

[0036] Example 2: According to Figures 1-9 As shown, the detection mechanism 1 is equipped with an auxiliary mechanism 3. The auxiliary mechanism 3 is used to evenly apply coupling agent to the detection end face of the detection probe. The auxiliary mechanism 3 includes a storage tank 301, a concave block 303, a rectangular hole 302, two magnetic strips 310, a gear pump 311, and a placement rack 313. The inner wall of the concave block 303 has a pre-set discharge hole 305 for discharging coupling agent. A circular tube 306 connected to the inside of the discharge hole 305 is fixed to the top of the concave block 303. A tube cap 307 is fixed to the top of the circular tube 306. A motor 308 is installed on the top of the tube cap 307. A rotating plate 309 is provided inside the circular tube 306. The motor 308, the rotating plate 309, and the circular tube 306 are connected to the magnetic strips 310. 06 is used to push the coupling agent conveyed into the round tube 306 to the discharge hole 305. The inlet and outlet ends of the gear pump 311 are both connected to the conveying pipe 312. The bottom end of the rotating shaft of the rotating plate 309 is rotatably embedded in the top of the concave block 303. The bottom of the actuating plate of the rotating plate 309 is in contact with the top of the concave block 303. The side of the actuating plate of the rotating plate 309 is in contact with the inner wall of the round tube 306. The top of the actuating plate of the rotating plate 309 is in contact with the bottom of the tube cover 307. The top end of the rotating shaft of the rotating plate 309 moves through the bottom of the tube cover 307. The output end of the motor 308 is installed with the top end of the rotating shaft of the rotating plate 309. One of the conveying pipes 31 The inlet end of pipe 2 is connected to the bottom outlet end of the storage tank 301, and the outlet end of another delivery pipe 312 is connected to the top inlet end of the pipe cover 307. An L-shaped plate 304 is movably inserted through the inner wall of the concave block 303. The upper side of the L-shaped plate 304 is in contact with the top of the inner wall of the concave block 303. The contact surfaces of the two magnetic strips 310 are connected by opposite magnetic poles. One of the magnetic strips 310 is fixedly embedded in the surface of the L-shaped plate 304. The gear pump 311 is installed on the top of the placement frame 313. The storage tank 301 and the concave block 303 are both fixed on the top of the placement frame 313. The interior of the rectangular hole 302 is connected to the interior of the concave block 303. The detection mechanism 1 includes a housing. 101, a rectangular hole 302 is pre-set on the inner wall of the outer shell 101, another magnetic strip 310 is fixedly embedded on the outer wall of the outer shell 101, a handle 2 is added to the top of the outer shell 101, a frame 120 is provided inside the outer shell 101, a shelf 313 is fixed on the frame 120, a front cover plate 102 is added to the front end face of the outer shell 101, a storage shell 104 is fixed on the surface of the front cover plate 102 near the bottom, an ultrasonic probe 107 is placed inside the storage shell 104, a display screen 103 and a switch button 116 are added to the surface of the front cover plate 102, and a switching power supply 111, a microprocessor 114 and an adapter board 115 are added to the bottom of the inner wall of the frame 120.

[0037] In this embodiment, when the ultrasonic probe 107 needs to be coated with coupling agent, the L-shaped plate 304 is first removed from the concave block 303. The moving L-shaped plate 304 will then cause the magnetic strip 310 on it to separate from the magnetic strip 310 on the outer casing 101. Subsequently, through the cooperation of the rectangular hole 302 and the concave block 303, a paper tube made of polyester film is fixed inside the discharge hole 305. Then, the ultrasonic probe 107 is moved so that it passes through the rectangular hole 302 and enters the concave block 303. Finally, the probe end of the ultrasonic probe 107 is inserted into the paper tube inside the discharge hole 305. When the probe end of the ultrasonic probe 107 is fully inserted into the paper tube, the paper tube still has space. The ultrasonic probe 107 is then kept stable and does not move. Then, through the cooperation of the display screen 103, the microprocessor 114, and the motor drive chip, the gear pump 311 is activated. The activated gear pump 311, with the cooperation of its output and input delivery pipes 312, extracts the coupling agent from the storage tank 301. Subsequently, through the two delivery pipes 312 and the activated gear pump 311, the agent is delivered to the section consisting of the round tube 306, the top of the concave block 303, and the bottom of the tube cap 307. Inside the space formed by the section and one side of the rotating plate 309, when the running time of the gear pump 311 is reached, the microprocessor 114 will shut down the gear pump 311 through the motor drive chip, stopping the injection of coupling agent into the space. Then, the display screen 103, the microprocessor 114, and the motor drive chip will start the motor 308. At this time, the started motor 308, with the cooperation of the fixed tube cover 307 and the concave block 303, will drive the rotating plate 309 to rotate stably. At this time, the rotating plate 309 will use the toggle plate on it to drive the coupling agent inside the space to move its position. When the position of the coupling agent is moved, the coupling agent will move its position. As the coupling agent passes through the discharge hole 305 and continues to move, some of the coupling agent will fill the space left by the paper tube, while the rest of the coupling agent will continue to move. When the running time of the motor 308 is reached, the microprocessor 114 will use the motor drive chip to turn off the motor 308. At this time, the rotating plate 309 will rotate back to the initial position. Then, the probe end of the ultrasonic probe 107 will be slowly moved out of the discharge hole 305 to prevent the coupling agent evenly coated on the probe end face of the ultrasonic probe 107 from deforming. Then, it will be moved out of the concave block 303 and then out of the rectangular hole 302.

[0038] The overall effect and working principle of the mechanism are as follows:

[0039] In the preparation stage, first connect multiple fans 109, ultrasonic generator 110, switching power supply 111, wireless interface component 112, power socket 113, microprocessor 114, adapter board 115 and switch button 116 in accordance with electrical safety specifications, equipment interface standards and functional requirements. Then connect the power socket 113 to the external power supply with the prepared power cord. Next, press the switch button 116 to start the entire hardness non-destructive testing equipment. Then, using the cooperation of display screen 103 and microprocessor 114, send control commands to ultrasonic generator 110 to adjust parameters such as frequency, power, and pulse width. Then set the running time after the gear pump 311 starts and the running time after the motor 308 starts. Then, remove the front cover 102 and open the liquid inlet cover of the liquid storage tank 301 in sequence, inject an appropriate amount of coupling agent into the liquid storage tank 301, and after completing the coupling agent injection operation, reset the liquid inlet cover of the liquid storage tank 301 and the front cover 102 back to their original positions in sequence.

[0040] Before testing, when it is necessary to perform non-destructive testing on the surface hardness of the mold, the rectangular plate 106 is first removed from the inside of the connecting hole 105. Then, the ultrasonic probe 107 placed inside the storage shell 104 is taken out through the connecting hole 105. Next, the wire connector of the ultrasonic probe 107 is connected to the adapter plate 115 through the auxiliary hole 122.

[0041] During the coupling agent application stage, when the ultrasonic probe 107 needs coupling agent application, the L-shaped plate 304 is first removed from the concave block 303. The moving L-shaped plate 304 then causes the magnetic strip 310 on it to separate from the magnetic strip 310 on the outer casing 101. Subsequently, through the cooperation of the rectangular hole 302 and the concave block 303, a paper tube made of polyester film paper (pre-prepared, characterized by its difficulty in coupling agent adhesion) is fixed inside the discharge hole 305. Next, the ultrasonic probe 107 is moved, allowing it to pass through the rectangular hole 302 and enter the concave block 303. Finally, the probe end of the ultrasonic probe 107 is inserted into the discharge hole 305. Inside the paper tube 5, when the probe end of the ultrasonic probe 107 is fully inserted into the paper tube, there is still space left in the paper tube (for the coupling agent to enter and be applied to the probe end face of the ultrasonic probe 107). The ultrasonic probe 107 is then kept stable and does not move. Then, through the cooperation of the display screen 103, the microprocessor 114, and the motor drive chip (pre-installed on the microprocessor 114), the gear pump 311 is started. The started gear pump 311, with the cooperation of its output and input delivery pipes 312, extracts the coupling agent from the storage tank 301. Subsequently, through the cooperation of the two delivery pipes 312 and the started gear pump 311, the coupling agent is delivered... The coupling agent is delivered into the space formed by the round tube 306, the top of the concave block 303, the bottom of the tube cover 307, and one side of the rotating plate 309. When the running time of the gear pump 311 is reached, the microprocessor 114 will shut down the gear pump 311 through the motor drive chip, stopping the injection of coupling agent into the space. Then, the display screen 103, the microprocessor 114, and the motor drive chip will start the motor 308. The started motor 308, in cooperation with the tube cover 307 and the concave block 303 in the fixed state, will drive the rotating plate 309 to rotate stably. At this time, the rotating plate 309 will use its actuating plate to move the coupling agent inside the space. When the position of the coupling agent is moved, the coupling agent will move. As the coupling agent passes through the discharge hole 305 and continues to move, some of the coupling agent will fill the space left by the paper tube (achieving uniform application of coupling agent to the detection end face of the ultrasonic probe 107), while the rest of the coupling agent will continue to move. When the running time of the motor 308 is reached, the microprocessor 114 will use the motor drive chip to turn off the motor 308. At this time, the rotating plate 309 will rotate back to the initial position. Then, the detection end of the ultrasonic probe 107 will be slowly moved out of the discharge hole 305 to prevent the coupling agent uniformly applied to the detection end face of the ultrasonic probe 107 from deforming. Then, it will be moved out of the concave block 303 and then out of the rectangular hole 302.

[0042] In the post-detection stage, after the coupling agent is evenly applied to the probe end of the ultrasonic probe 107, the probe end coated with coupling agent is brought into contact with the mold surface. Then, using the display screen 103 and the microprocessor 114, a start command is sent to the ultrasonic generator 110 and all fans 109. Upon receiving the command, the ultrasonic generator 110 generates a high-frequency electrical signal and transmits it to the ultrasonic probe 107 via the adapter plate 115. Upon receiving this electrical signal, the ultrasonic probe 107 converts it into mechanical vibration, generating ultrasonic pulses. These ultrasonic pulses then generate ultrasonic pulses with a specific... The frequency and wavelength are coupled to the mold surface through a coupling agent (such as petroleum jelly). The ultrasonic waves entering the mold then undergo reflection, refraction, and scattering when encountering different structural or hardness regions within the mold. After propagating a certain distance within the mold, some ultrasonic waves return to the mold surface and are received by the ultrasonic probe 107. This ultrasonic mechanical vibration is then converted into an electrical signal, which is transmitted to the microprocessor 114 via the adapter board 115. The microprocessor 114 then amplifies, filters, and performs other preprocessing on the received electrical signal, storing the processed data in its memory. Simultaneously, it also adjusts the measured... By combining ultrasonic propagation time, propagation distance, known material properties, and data models, the processed data is analyzed to calculate the surface hardness of the mold. The calculated data is then transmitted to display screen 103 and displayed on its screen. Simultaneously, the calculated hardness data is stored in its memory. At the same time, all activated fans 109 engage with pre-drilled holes in the housing 101 to draw in low-temperature air from the environment. The low-temperature air entering the housing 101, along with the activated fans 109, the adapter holes on the rear cover 119 (corresponding to the fans 109), and all other components... The ventilation grille 108 helps to remove heat (heat generated by the internal components of the space) distributed within the space consisting of the outer shell 101, the front cover 102, and the rear cover 119. When the calculated mold surface hardness data needs to be uploaded to a remote server via the network, the data stored in the memory on the microprocessor 114 can be uploaded to the remote server directly by using the wireless interface component 112, the display screen 103, and the wireless antenna 121. When another non-destructive test of the mold surface hardness is required, the probe end of the ultrasonic probe 107 should be cleaned first, and then the above operation steps should be repeated.

[0043] The formula for calculating the surface hardness of the mold is as follows: Where H is the hardness, a1 and a2 are constants, υ is the propagation speed, e is the correction coefficient, and f(ρ,E,ν) is a function of the material density ρ, elastic modulus E, and Poisson's ratio ν.

[0044] υ is the propagation speed, S is the known propagation distance of the ultrasonic wave in the mold, and t is the time it takes for the ultrasonic wave to travel from emission to reception of the reflected wave.

[0045] The locking block 117, the locking slot 118, the storage shell 104, and the front cover plate 102 installed on the outer shell 101 cooperate to prevent the rear cover plate 119 from driving the frame 120 out of the outer shell 101.

[0046] Among them, ultrasonic probe 107, fan 109, ultrasonic generator 110, switching power supply 111, wireless interface assembly 112, power socket 113, microprocessor 114, adapter board 115, switch button 116, wireless antenna 121, motor 308 and gear pump 311 are all existing technologies, and their models can be selected according to the actual situation. They will not be explained in detail here.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-destructive testing device for the surface hardness of a mold, comprising a testing mechanism (1) and a handle (2), characterized in that: The detection mechanism (1) is used to perform non-destructive testing of the hardness of the mold surface. The detection mechanism (1) is equipped with an auxiliary mechanism (3) inside. The auxiliary mechanism (3) is used to uniformly apply coupling agent to the detection end face of the detection probe. The auxiliary mechanism (3) includes a storage tank (301), a concave block (303), a rectangular hole (302), two magnetic strips (310), a gear pump (311), and a placement rack (313). The top of the inner wall of the concave block (303) is pre-set with a discharge hole (305) for discharging the coupling agent. A circular tube (306) communicating with the inside of the discharge hole (305) is fixed to the top of the concave block (303). The top of the circular tube (306) is fixed... A pipe cover (307) is provided, and a motor (308) is installed on the top of the pipe cover (307). A rotating plate (309) is provided inside the round tube (306). The motor (308), the rotating plate (309) and the round tube (306) are used to push the coupling agent delivered to the inside of the round tube (306) to the discharge hole (305). The inlet end and the outlet end of the gear pump (311) are both connected to a delivery pipe (312).

2. The non-destructive testing equipment for mold surface hardness according to claim 1, characterized in that: The bottom end of the rotating shaft of the rotating plate (309) is rotatably embedded in the top of the concave block (303). The bottom of the actuating plate of the rotating plate (309) is in contact with the top of the concave block (303). The side of the actuating plate of the rotating plate (309) is in contact with the inner wall of the round tube (306). The top of the actuating plate of the rotating plate (309) is in contact with the bottom of the tube cover (307). The top end of the rotating shaft of the rotating plate (309) moves through the bottom of the tube cover (307).

3. The non-destructive testing equipment for mold surface hardness according to claim 1, characterized in that: The output end of the motor (308) is installed with the top of the rotating shaft of the rotating plate (309). The inlet end of one of the conveying pipes (312) is connected to the bottom outlet end of the storage tank (301), and the outlet end of the other conveying pipe (312) is connected to the top inlet end of the pipe cover (307). An L-shaped plate (304) is movably passed through the inner wall of the concave block (303), and the upper side of the L-shaped plate (304) is in contact with the top of the inner wall of the concave block (303).

4. The non-destructive testing equipment for mold surface hardness according to claim 3, characterized in that: The two magnetic strips (310) are connected by opposite magnetic poles at their contact surfaces. One of the magnetic strips (310) is fixedly embedded on the surface of the L-shaped plate (304). The gear pump (311) is mounted on the top of the placement frame (313). The liquid storage tank (301) and the concave block (303) are both fixed on the top of the placement frame (313). The interior of the rectangular hole (302) and the interior of the concave block (303) are connected.

5. The non-destructive testing equipment for mold surface hardness according to claim 1, characterized in that: The detection mechanism (1) includes a housing (101), a rectangular hole (302) is pre-set in the inner wall of the housing (101), another magnetic strip (310) is fixedly embedded in the outer wall of the housing (101), a handle (2) is added to the top of the housing (101), a frame (120) is provided inside the housing (101), a placement rack (313) is fixed on the frame (120), a front cover plate (102) is added to the front end face of the housing (101), and the surface of the front cover plate (102) is in contact with the surface of the frame (120).

6. The non-destructive testing equipment for mold surface hardness according to claim 5, characterized in that: The front cover (102) is equipped with a display screen (103) and a switch button (116). The display end and control end of the display screen (103) and the button end of the switch button (116) are respectively movably sleeved inside the adapter hole reserved on the front cover (102). A storage shell (104) is fixed on the surface of the front cover (102) near the bottom. The bottom of the storage shell (104) is in contact with the bottom of the inner wall of the frame (120). A connecting hole (105) is preset on the surface of the front cover (102) near the bottom.

7. The non-destructive testing equipment for mold surface hardness according to claim 6, characterized in that: The interior of the connecting hole (105) is connected to the interior of the storage shell (104). A rectangular plate (106) is installed at the opening of the connecting hole (105). An ultrasonic probe (107) is placed inside the storage shell (104). A rear cover plate (119) is provided on the rear end face of the outer shell (101). The surface of the rear cover plate (119) is in contact with the surface of the outer shell (101). The surface of the rear cover plate (119) is fixed to the surface of the frame (120).

8. The non-destructive testing equipment for mold surface hardness according to claim 7, characterized in that: Each heat dissipation hole reserved on the rear cover plate (119) is fixed with a ventilation grille (108). Multiple fans (109) are installed on the surface of the rear cover plate (119). The air outlet of each fan (109) corresponds to each heat dissipation hole reserved on the rear cover plate (119). An ultrasonic generator (110) is installed on the top of the inner wall of the frame (120). A switching power supply (111), a microprocessor (114), and an adapter board (115) are installed on the bottom of the inner wall of the frame (120).

9. The non-destructive testing equipment for mold surface hardness according to claim 8, characterized in that: A wireless interface assembly (112) and a power socket (113) are installed on the surface of the rear cover (119) near the bottom. The connection end of the wireless interface assembly (112) and the connection end of the power socket (113) are respectively movably sleeved inside the adapter hole reserved on the rear cover (119). Two symmetrical locking blocks (117) are movably inserted through the inner wall of the frame (120). The opposite ends of the two locking blocks (117) are slidably embedded in the inner wall of the outer shell (101).

10. The non-destructive testing equipment for mold surface hardness according to claim 9, characterized in that: The surface of the storage shell (104) has two symmetrical slots (118), and the opposite ends of the two card blocks (117) are respectively located inside the two slots (118). The connection end of the wireless interface assembly (112) is equipped with a wireless antenna (121). The outer wall of the shell (101) has an auxiliary hole (122), which is used for the interface on the adapter plate (115) to communicate with the outside.

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