Equipment, methods and related equipment for detecting internal defects in capillaries

Abstract

This invention provides a device, method, and related equipment for detecting internal defects in capillaries, relating to the field of internal defect detection technology for porous materials. The device includes a power supply, a clamping device, a first contact part, a second contact part, and a controller. The first contact part is equipped with multiple metal probes, each capable of being inserted into a corresponding capillary channel and connected to one electrode of the power supply. The second contact part has a liquid storage chamber; the upward-facing side of the liquid storage chamber has an internally and externally penetrating opening, and a conductive sheet is located at the bottom. After conductive liquid is injected into the liquid storage chamber, all capillary channels can contact the liquid surface through the opening, and the conductive sheet is immersed in the liquid, connected to the other electrode of the power supply. The controller monitors the formed circuit loop. This invention effectively detects internal defects in the capillary channels of specific PCL workpieces.

Description

Technical Field

[0001] This invention relates to the field of internal defect detection technology for porous materials, and more specifically, to a device, method and related equipment for detecting internal defects in capillaries. Background Technology

[0002] In recent years, numerous studies and real-world examples have demonstrated that porous materials made from PCL can be effectively used in bone repair. However, during the processing of porous materials, various internal defects inevitably occur due to manufacturing process issues. This is especially true for capillary pores, which require high precision. Whether there is blockage inside the capillary pores and whether the pore size meets the standards directly affect the hydrophilicity of the porous material. Hydrophilicity, in turn, affects cell adhesion and the ability of cells to self-seed, thereby affecting the bone repair effect. Therefore, for porous materials with capillary pores, there is an urgent need for a device that can accurately detect internal defects. Summary of the Invention

[0003] The purpose of this invention is to provide a device, method and related equipment for detecting defects inside capillary channels of a specific PCL workpiece.

[0004] In a first aspect, the present invention provides a capillary internal defect detection device for detecting internal defects in capillary channels in a non-conductive PCL workpiece. All the capillary channels extend in a straight line along the same direction and penetrate the PCL workpiece. The capillary internal defect detection device includes a power supply, a clamping device, a first contact part, a second contact part, and a controller. The clamping device is used to clamp the PCL workpiece.

[0005] The first contact portion is located above the clamping device and is provided with a plurality of metal probes, all of which protrude downward and each of which can be inserted into a corresponding capillary channel; all of which are connected to one of the electrodes of the power supply.

[0006] The second contact portion is located below the clamping device and is provided with a liquid storage cavity for storing liquid. The liquid storage cavity has an opening that runs through the inside and outside and a conductive sheet at the bottom. After the liquid storage cavity is injected with conductive liquid, all the capillary channels can contact the liquid surface through the opening, and the conductive sheet is immersed in the liquid. The conductive sheet is connected to the other electrode of the power supply.

[0007] The controller is used to monitor the circuit loops formed by each of the metal probes and the conductive sheet.

[0008] This invention is designed for internal defect detection in PCL workpieces where capillary channels extend in a straight line in the same direction and penetrate through the entire workpiece. It can effectively identify capillary channels with blockage or pore size problems, thereby filtering out defective products and ensuring that the finished products have good bone repair effects.

[0009] Furthermore, it also includes a bracket, wherein the first contact portion and the second contact portion are both slidably disposed on the bracket and can move closer to or further away from each other in the vertical direction.

[0010] Furthermore, a lifting device is connected to the center of the bottom of the second contact part, which is used to drive the second contact part to rise or fall; the bracket is also provided with two positioning shafts, which are inserted into the second contact part and are arranged in a triangular distribution with the lifting device.

[0011] Furthermore, the clamping device includes a fixing part and a separating part. The fixing part is fixedly disposed on the bracket, and the separating part is detachably mounted on the fixing part. The separating part is used to clamp the PCL workpiece.

[0012] Furthermore, the separating part and the fixing part are magnetically connected.

[0013] Secondly, the present invention provides a detection method based on the above-described capillary internal defect detection device, comprising the following steps:

[0014] S1. After filling the second contact portion with conductive liquid and installing the PCL workpiece into the separation portion in such a way that the extension direction of the capillary channel is parallel to the vertical direction, control the first contact portion to descend until all metal probes are accurately inserted into the corresponding capillary channels.

[0015] S2. Control the second contact portion to rise until the capillary channel contacts the liquid surface;

[0016] S3. Obtain first monitoring information through the controller;

[0017] S4. Control the first contact portion and the second contact portion to move away from the PCL workpiece;

[0018] S5. After separating the PCL workpiece together with the separating part from the fixing part, washing the PCL workpiece with ultrapure water, drying the PCL workpiece, and rotating the PCL workpiece up and down 180°, repeat steps S1-S2 once.

[0019] S6. Obtain second monitoring information through the controller;

[0020] S7. Determine the internal defects in the capillary channel based on the first monitoring information and the second monitoring information.

[0021] Furthermore, the first monitoring information includes the formation time of each circuit loop and the first number of each metal probe that does not form a circuit loop; the second monitoring information includes the second number of each metal probe that does not form a circuit loop; the internal defects in the capillary channel include pore size defects and blockage defects.

[0022] The specific steps in step S7 include:

[0023] S71. Compare the formation time with a preset reference value to identify capillary channels with pore size defects;

[0024] S72. Identify capillary channels with blockage defects based on the first number and the second number.

[0025] Thirdly, the present invention provides a detection device based on the above-described capillary internal defect detection equipment, comprising:

[0026] The first control module is used to control the first contact part to descend after the second contact part has been filled with conductive liquid and the PCL workpiece has been installed on the separation part in such a way that the extension direction of the capillary channel is parallel to the vertical direction, until all metal probes are accurately inserted into the corresponding capillary channels.

[0027] The second control module is used to control the second contact part to rise until the capillary channel contacts the liquid surface;

[0028] The first acquisition module is used to acquire first monitoring information through the controller;

[0029] The third control module is used to control the first contact portion and the second contact portion to move away from the PCL workpiece;

[0030] The fourth control module is used to repeat steps S1-S2 once after separating the PCL workpiece together with the separation part from the fixing part, washing the PCL workpiece with ultrapure water, drying the PCL workpiece, and rotating the PCL workpiece up and down 180°.

[0031] The second acquisition module is used to acquire second monitoring information through the controller;

[0032] The judgment module is used to judge the internal defects in the capillary channel based on the first monitoring information and the second monitoring information.

[0033] Fourthly, the present invention provides an electronic device including a processor and a memory, the memory storing computer-readable instructions, which, when executed by the processor, perform the steps of the detection method provided in the second aspect above.

[0034] Fifthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps of the detection method provided in the second aspect above.

[0035] As can be seen from the above, the capillary pore internal defect detection device provided by the present invention utilizes the non-conductive nature of the PCL workpiece itself. When the capillary channel absorbs the conductive medium through capillary action to form a circuit loop, the device determines whether there are blockage defects or pore diameter defects in the capillary channel based on the circuit loop formation time and whether the circuit loop is successfully formed.

[0036] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the capillary internal defect detection device provided in an embodiment of the present invention from one perspective.

[0038] Figure 2 This is a schematic diagram of the capillary internal defect detection device provided in an embodiment of the present invention from another perspective.

[0039] Figure 3 This is a flowchart of a detection method provided in an embodiment of the present invention.

[0040] Figure 4 This is an internal sectional view of the PCL workpiece in an embodiment of the present invention.

[0041] Figure 5 This is a schematic diagram of a detection device provided in an embodiment of the present invention.

[0042] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0043] Label Explanation:

[0044] 100, PCL workpiece; 200, clamping device; 210, fixing part; 220, separating part; 300, first contact part; 400, second contact part; 410, liquid storage chamber; 500, bracket; 510, positioning shaft; 600, lifting device; 700, first control module; 800, second control module; 900, first acquisition module; 1000, third control module; 1100, fourth control module; 1200, second acquisition module; 1300, judgment module; 1400, electronic device; 1401, processor; 1402, memory; 1403, communication bus. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below, examples of which 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 the present invention, and should not be construed as limiting the present invention.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0050] 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0051] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. 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 invention, "a plurality of" means two or more, unless otherwise explicitly specified. Also, in the description of this invention, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0052] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a capillary internal defect detection device from one perspective. The device is used to detect internal defects in the capillary channels of a non-conductive PCL workpiece 100 (a PCL workpiece refers to a workpiece made of PCL material, i.e., polycaprolactone material, which can be manufactured by 3D printing technology). All capillary channels extend in a straight line in the same direction and penetrate the PCL workpiece 100. The device includes a power supply, a clamping device 200, a first contact part 300, a second contact part 400, and a controller. The clamping device 200 is used to clamp the PCL workpiece.

[0053] The first contact portion 300 is located above the clamping device 200 and is provided with a plurality of metal probes, all of which protrude downward and each metal probe can be inserted into a corresponding capillary channel; all metal probes are connected to one of the electrodes of the power supply.

[0054] The second contact part 400 is located below the clamping device 200 and is provided with a liquid storage cavity 410 for storing liquid. The liquid storage cavity 410 has an opening that runs through the inside and outside on the upward side and a conductive sheet is provided at the bottom. After the liquid storage cavity 410 is injected with conductive liquid, all capillary channels can contact the liquid surface through the opening, and the conductive sheet is immersed in the liquid. The conductive sheet is connected to the other electrode of the power supply.

[0055] The controller is used to monitor the circuit loops formed by each metal probe and the conductive sheet.

[0056] It should be noted that the capillary defect detection equipment in this embodiment is only applicable to non-conductive PCL workpieces with capillary channel lengths within a specific range, and all capillary channels in the PCL workpiece are designed to extend in a straight line in the same direction and penetrate the entire PCL workpiece; specifically, the specific length range is determined according to the following formula:

[0057] ;

[0058] in, This represents the maximum length of the capillary channel. The surface tension coefficient of the liquid. This is the contact angle between the liquid surface and the inner wall of the capillary channel. For the density of the liquid, It is the acceleration due to gravity. The radius of the capillary channel is denoted as .

[0059] For example, the aperture of the capillary channel in a PCL workpiece is designed to be 0.5 mm (equivalent to 0.5 * 10).-3 When using physiological saline (i.e., sodium chloride solution) as the conductive liquid to inspect internal defects in PCL workpieces, the contact angle between the saline solution surface and the inner wall of the capillary channel is approximately 0° (the contact angle between the liquid surface of different liquids and the inner wall of capillary channels with different pore sizes can be calculated using existing formulas or measured using a contact angle measuring instrument; this is existing technology and will not be elaborated further here). The surface tension coefficient of the saline solution is approximately 7.5*10⁻⁶. -2 N / m, the liquid density of physiological saline is approximately 1.03*10 N / m. 3 kg / m 3 The gravitational acceleration is approximately 9.8 N / kg;

[0060] Therefore, the maximum length of the capillary channel can be calculated:

[0061] =0.0297m=29.7mm.

[0062] Therefore, when using physiological saline to detect internal defects in PCL workpieces, the capillary internal defect detection device in this embodiment is only suitable for PCL workpieces with a capillary channel length of 29.7 mm or less (including 29.7 mm). The evaluation criteria are that qualified capillary channels can be filled with conductive liquid normally, and the time required for qualified capillary channels to be filled with conductive liquid normally (i.e., the circuit loop construction time mentioned below). In this way, unqualified capillary channels and their corresponding defects can be identified.

[0063] In this embodiment, the PCL workpiece 100 needs to be mounted on the clamping device 200 with the extension direction of the capillary channel parallel to the vertical direction. Then, the first contact part 300 is controlled to approach the upper end of the PCL workpiece 100 so that all metal probes can be inserted into the capillary channel, and each metal probe corresponds to each capillary channel (the diameter of the metal probe is much smaller than that of the capillary channel).

[0064] Then, the second contact part 400, which is filled with conductive liquid, is controlled to rise steadily, so that the lower end of the PCL workpiece 100 extends into the liquid storage chamber 410 through the opening and contacts the liquid surface of the conductive liquid. At the moment of contact, due to capillary action, the conductive liquid is absorbed by each capillary channel. The unblocked capillary channels can be filled with conductive liquid. At this time, the liquid column, the corresponding metal probe, the conductive sheet and the power supply form a complete circuit loop. Therefore, by monitoring the circuit loop configuration of each capillary channel by the controller, it can be determined whether there is a blockage defect in each capillary channel.

[0065] It should be noted that in practical applications, the upper and lower ends of the PCL workpiece 100 are required to have sufficient flatness to ensure that all metal probes are at the same depth in each capillary channel, and also to ensure that all capillary channels can simultaneously contact the surface of the conductive liquid, so as to avoid the subsequent measurement of the circuit loop formation time due to the protrusion or indentation of the local structure.

[0066] In some embodiments, reference is made to the appendix. Figure 1 and attached Figure 2 The capillary pore internal defect detection device also includes a support 500. The first contact part 300 and the second contact part 400 are slidably disposed on the support 500 and can move closer or further apart from each other in the vertical direction. The distance between the first contact part 300 and the second contact part 400 is adjustable, which can meet the requirements for internal defect detection of PCL workpieces of various lengths.

[0067] In some embodiments, reference is made to the appendix. Figure 1 and attached Figure 2 A lifting device 600 is connected to the center of the bottom of the second contact part 400. The lifting device 600 is used to drive the second contact part 400 to rise or fall. Two positioning shafts 510 are also provided on the bracket 500. The two positioning shafts 510 are inserted into the second contact part 400 and are arranged in a triangular pattern with the lifting device 600.

[0068] In this embodiment, the triangular arrangement of the two positioning shafts 510 and the lifting device 600 effectively improves the stability of the second contact portion 400 when it moves up and down, which is beneficial for the second contact portion 400 to achieve precise movement. This ensures that when the second contact portion 400 approaches the PCL workpiece 100, the surface of the conductive liquid will not fluctuate too much, thereby ensuring that all capillary channels can contact the surface of the conductive liquid at the same time, avoiding the difference in contact time between each capillary channel and the surface of the conductive liquid, which would affect the subsequent measurement of the circuit loop formation time.

[0069] In some embodiments, reference is made to the appendix. Figure 2 The clamping device 200 includes a fixing part 210 and a separating part 220. The fixing part 210 is fixedly mounted on the bracket 500, and the separating part 220 is detachably mounted on the fixing part 210. The separating part 220 is used to clamp the PCL workpiece 100.

[0070] The capillary pore internal defect detection equipment is a high-precision detection device. If the equipment is impacted when assembling or disassembling the PCL workpiece 100, the delicate internal parts of the equipment may be damaged, thus affecting the use of the equipment. Therefore, in this embodiment, the separating part 220 and the fixing part 210 can be disassembled and separated, so that the user can easily remove the PCL workpiece 100 from the equipment, and then transfer the PCL workpiece 100 and the separating part 220 together to a more spacious space for further assembly and disassembly. This not only makes the operation convenient, but also reduces the risk of the equipment being impacted by external forces.

[0071] In some embodiments, the connection between the separating part 220 and the fixing part 210 can be a screw connection, a snap-fit ​​connection, a pin connection, a key connection, etc.

[0072] In some preferred embodiments, the separating part 220 and the fixing part 210 are magnetically connected.

[0073] The magnetic connection operation is more convenient, with less wear from repeated disassembly and assembly, and high reliability. In this embodiment, the first contact part 300 and the second contact part 400 will only have slight contact with the PCL workpiece 100, and the PCL workpiece 100 will not be subjected to much external force. Therefore, the fixed connection achieved by magnetic adsorption is sufficient to meet the usage requirements.

[0074] Please refer to Figure 3 , Figure 3 This is a flowchart of a detection method based on the aforementioned capillary internal defect detection equipment. The detection method includes the following steps:

[0075] S1. After filling the second contact part with conductive liquid and installing the PCL workpiece into the separation part in a manner where the extension direction of the capillary channel is parallel to the vertical direction, control the first contact part to descend until all metal probes are accurately inserted into the corresponding capillary channels.

[0076] S2. Control the second contact part to rise until the capillary channel contacts the liquid surface;

[0077] S3. Obtain the first monitoring information through the controller;

[0078] S4. Control the first and second contact portions to move away from the PCL workpiece;

[0079] S5. After separating the PCL workpiece along with the separation part from the fixing part, washing the PCL workpiece with ultrapure water, drying the PCL workpiece, and rotating the PCL workpiece up and down 180°, repeat steps S1-S2 once.

[0080] S6. Obtain the second monitoring information through the controller;

[0081] S7. Determine the internal defects in the capillary channels based on the first monitoring information and the second monitoring information.

[0082] Furthermore, the first monitoring information includes the formation time of each circuit loop and the first number of each metal probe that does not form a circuit loop; the second monitoring information includes the second number of each metal probe that does not form a circuit loop; internal defects in the capillary channel include pore size defects and blockage defects (see appendix). Figure 4 );

[0083] The specific steps in step S7 include:

[0084] S71. Compare the formation time with a preset reference value to identify capillary channels with pore size defects;

[0085] S72. Identify capillary channels with blockage defects based on the first and second numbers.

[0086] In this embodiment, the time required for the capillary channel to absorb conductive liquid, calculated based on the pore size in the capillary channel design standard, is used as a reference value. If the error between the circuit circuit formation time and the reference value exceeds the allowable range, it is considered that there is a pore size defect. For example, if the circuit circuit formation time is less than the reference value, it is determined that the average pore size of the capillary channel is greater than the design standard, and it should be filled, repaired, or rebuilt. Similarly, if the circuit circuit formation time is less than the reference value, it is determined that the average pore size of the capillary channel is less than the design standard, and it should be enlarged, repaired, or rebuilt.

[0087] Additionally, see attached document. Figure 4 In practical applications, considering that adjacent capillary channels in a PCL workpiece may become interconnected, which can affect the qualification of the capillary channels, in order to improve the accuracy of the inspection, this embodiment requires that the PCL workpiece be rotated 180° up and down before a second inspection when inspecting the same PCL workpiece.

[0088] For example, if there is a connection between capillary channel A and capillary channel B, and capillary channel A is blocked, a single test may lead to the conclusion that capillary channel A is unblocked because conductive liquid in capillary channel B flows into capillary channel A. In this case, a second test by reversing the direction can detect the blockage defect in capillary channel A.

[0089] It should be noted that when a second inspection is required, the PCL workpiece must be disassembled together with the separation part. This is because the separation part is fixed to the PCL workpiece, and the PCL workpiece can only be reinstalled on the fixed part by rotating it up and down. This reduces the risk of errors in subsequent measurement data caused by rotating in the wrong direction during the cleaning process.

[0090] It should also be noted that after the PCL workpiece rotates up and down, the metal probes corresponding to each capillary channel will change. In order to avoid errors in the measurement data, the number of the metal probes can be changed by the controller to unify the two measurement data.

[0091] Please refer to Figure 5 , Figure 5 This is a schematic diagram of the detection device based on the above-mentioned capillary internal defect detection equipment. The detection device is integrated into the back-end control equipment in the form of a computer program, and includes:

[0092] The first control module 700 is used to control the first contact part to descend after the second contact part has been filled with conductive liquid and the PCL workpiece has been installed into the separation part in such a way that the extension direction of the capillary channel is parallel to the vertical direction, until all metal probes are accurately inserted into the corresponding capillary channels.

[0093] The second control module 800 is used to control the second contact part to rise until the capillary channel contacts the liquid surface.

[0094] The first acquisition module 900 is used to acquire first monitoring information through the controller;

[0095] The third control module 1000 is used to control the first contact part and the second contact part to move away from the PCL workpiece;

[0096] The fourth control module 1100 is used to repeat steps S1-S2 once after separating the PCL workpiece along with the separation part from the fixing part, washing the PCL workpiece with ultrapure water, drying the PCL workpiece, and rotating the PCL workpiece up and down 180°.

[0097] The second acquisition module 1200 is used to acquire second monitoring information through the controller;

[0098] The judgment module 1300 is used to judge the internal defects in the capillary channel based on the first monitoring information and the second monitoring information.

[0099] In some embodiments, the first monitoring information includes the formation time of each circuit loop and the first number of each metal probe that does not form a circuit loop; the second monitoring information includes the second number of each metal probe that does not form a circuit loop; the internal defects in the capillary channel include pore size defects and blockage defects.

[0100] The judgment module 1300 performs the following when judging internal defects in the capillary channel based on the first monitoring information and the second monitoring information:

[0101] S71. Compare the formation time with a preset reference value to identify capillary channels with pore size defects;

[0102] S72. Identify capillary channels with blockage defects based on the first and second numbers.

[0103] Please refer to Figure 6 , Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. The present invention provides an electronic device 1400, including: a processor 1401 and a memory 1402. The processor 1401 and the memory 1402 are interconnected and communicate with each other via a communication bus 1403 and / or other forms of connection mechanism (not shown). The memory 1402 stores computer-readable instructions executable by the processor 1401. When the electronic device is running, the processor 1401 executes the computer-readable instructions to perform the detection method in any optional implementation of the above embodiments, thereby achieving the following function: filling the second contact portion with conductive liquid and placing the PCL workpiece through a capillary channel. After the probes are installed in the separation section with their extension direction parallel to the vertical direction, the first contact part is controlled to descend until all metal probes are accurately inserted into the corresponding capillary channels; the second contact part is controlled to rise until the capillary channels are in contact with the liquid surface; the first monitoring information is obtained through the controller; the first and second contact parts are controlled to move away from the PCL workpiece; after the PCL workpiece and the separation section are removed from the fixing part, the PCL workpiece is washed with ultrapure water, the PCL workpiece is dried, and the PCL workpiece is rotated 180° vertically, steps S1-S2 are repeated once; the second monitoring information is obtained through the controller; and the internal defects in the capillary channels are determined based on the first and second monitoring information.

[0104] This invention provides a computer-readable storage medium. When a computer program is executed by a processor, it performs the detection method in any optional implementation of the above embodiments to achieve the following functions: after filling the second contact portion with conductive liquid and installing the PCL workpiece into the separation portion with the capillary channel extension direction parallel to the vertical direction, the first contact portion is controlled to descend until all metal probes are accurately inserted into the corresponding capillary channels; the second contact portion is controlled to rise until the capillary channel contacts the liquid surface; first monitoring information is acquired through the controller; the first and second contact portions are controlled to move away from the PCL workpiece; after removing the PCL workpiece along with the separation portion from the fixing portion, washing the PCL workpiece with ultrapure water, drying the PCL workpiece, and rotating the PCL workpiece vertically by 180°, steps S1-S2 are repeated once; second monitoring information is acquired through the controller; and internal defects in the capillary channels are determined based on the first and second monitoring information.

[0105] The computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0106] In the embodiments provided by this invention, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0107] Furthermore, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0108] Furthermore, in the various embodiments of the present invention, the functional modules can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0109] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0110] The use of terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refers to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] The above description is merely an embodiment of the present invention and is not intended to limit the scope of protection of the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A capillary pore internal defect detection device, used for detecting internal defects in capillary channels of a non-conductive PCL workpiece (100), wherein all said capillary channels extend linearly in the same direction and penetrate the PCL workpiece (100), characterized in that, The capillary pore internal defect detection device includes a power supply, a clamping device (200), a first contact part (300), a second contact part (400), and a controller. The clamping device (200) is used to clamp the PCL workpiece. The first contact portion (300) is located above the clamping device (200) and is provided with a plurality of metal probes, all of which protrude downward and each of which can be inserted into a corresponding capillary channel; all of which are connected to one of the electrodes of the power supply. The second contact portion (400) is located below the clamping device (200) and is provided with a liquid storage cavity (410) for storing liquid; the liquid storage cavity (410) has an opening that runs through the inside and outside on the upward side and a conductive sheet is provided at the bottom. After the liquid storage cavity (410) is injected with conductive liquid, all the capillary channels can contact the liquid surface through the opening, and the conductive sheet is immersed in the liquid. The conductive sheet is connected to the other electrode of the power supply. The controller is used to monitor the circuit loops formed by each of the metal probes and the conductive sheet. The capillary pore internal defect detection device also includes a bracket (500), and the first contact part (300) and the second contact part (400) are slidably disposed on the bracket (500) and can move closer or further away from each other in the vertical direction.

2. The capillary pore internal defect detection device according to claim 1, characterized in that, A lifting device (600) is connected to the center of the bottom of the second contact part (400). The lifting device (600) is used to drive the second contact part (400) to rise or fall. Two positioning shafts (510) are also provided on the bracket (500). The two positioning shafts (510) are inserted into the second contact part (400) and are arranged in a triangular distribution with the lifting device (600).

3. The capillary pore internal defect detection device according to claim 2, characterized in that, The clamping device (200) includes a fixing part (210) and a separating part (220). The fixing part (210) is fixedly disposed on the bracket (500), and the separating part (220) is detachably mounted on the fixing part (210). The separating part (220) is used to clamp the PCL workpiece (100).

4. The capillary pore internal defect detection device according to claim 3, characterized in that, The separating part (220) and the fixing part (210) are magnetically connected.

5. A detection method based on the capillary internal defect detection device as described in claim 4, characterized in that, Includes the following steps: S1. After filling the second contact portion with conductive liquid and installing the PCL workpiece into the separation portion in such a way that the extension direction of the capillary channel is parallel to the vertical direction, control the first contact portion to descend until all metal probes are accurately inserted into the corresponding capillary channels. S2. Control the second contact portion to rise until the capillary channel contacts the liquid surface; S3. Obtain first monitoring information through the controller; S4. Control the first contact portion and the second contact portion to move away from the PCL workpiece; S5. After separating the PCL workpiece together with the separating part from the fixing part, washing the PCL workpiece with ultrapure water, drying the PCL workpiece, and rotating the PCL workpiece up and down 180°, repeat steps S1-S2 once. S6. Obtain second monitoring information through the controller; S7. Determine the internal defects in the capillary channel based on the first monitoring information and the second monitoring information.

6. The detection method according to claim 5, characterized in that, The first monitoring information includes the formation time of each circuit loop and the first number of each metal probe that does not form a circuit loop; the second monitoring information includes the second number of each metal probe that does not form a circuit loop; the internal defects in the capillary channel include pore size defects and blockage defects. The specific steps in step S7 include: S71. Compare the formation time with a preset reference value to identify capillary channels with pore size defects; S72. Identify capillary channels with blockage defects based on the first number and the second number.

7. A detection device based on the capillary internal defect detection equipment as described in claim 4, characterized in that, include: The first control module is used to control the first contact part to descend after the second contact part has been filled with conductive liquid and the PCL workpiece has been installed on the separation part in such a way that the extension direction of the capillary channel is parallel to the vertical direction, until all metal probes are accurately inserted into the corresponding capillary channels. The second control module is used to control the second contact part to rise until the capillary channel contacts the liquid surface; The first acquisition module is used to acquire first monitoring information through the controller; The third control module is used to control the first contact portion and the second contact portion to move away from the PCL workpiece; The fourth control module is used to repeat the following steps S1-S2 once after separating the PCL workpiece along with the separating part from the fixing part, washing the PCL workpiece with ultrapure water, drying the PCL workpiece, and rotating the PCL workpiece up and down 180°: S1. After filling the second contact portion with conductive liquid and installing the PCL workpiece into the separation portion in such a way that the extension direction of the capillary channel is parallel to the vertical direction, control the first contact portion to descend until all metal probes are accurately inserted into the corresponding capillary channels. S2. Control the second contact portion to rise until the capillary channel contacts the liquid surface; The second acquisition module is used to acquire second monitoring information through the controller; The judgment module is used to judge the internal defects in the capillary channel based on the first monitoring information and the second monitoring information.

8. An electronic device, characterized in that, It includes a processor and a memory, the memory storing computer-readable instructions, which, when executed by the processor, perform the steps of the detection method as described in any one of claims 5-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it performs the steps of the detection method as described in any one of claims 5-6.

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