Intelligent screw box

Abstract

The utility model relates to an intelligent screw box which comprises a containing disc, a detection component, a driving component and a controller, the containing disc is used for containing screws, nuts face upwards when the screws are located in the containing disc, and the detection component is arranged below the containing disc and can move by a preset distance to detect the lengths of the screws. The driving part is connected with the detection part and used for driving the detection part to move, the controller is electrically connected with the detection part and the driving part, and the controller is used for controlling the driving part and obtaining detection information of the detection part; wherein the preset distance is related to the length of the screw. According to the intelligent screw box, the lengths of multiple screws can be automatically detected at a time, the problems of low detection efficiency and low detection precision caused by manual detection are solved, the detection cost is lower, and the flexibility is higher.

Description

Technical Field

[0001] This application relates to the field of automatic detection technology, and in particular to an intelligent screw box. Background Technology

[0002] In fields such as precision assembly, electronic product manufacturing, and industrial maintenance, screws, as basic fasteners, directly affect the structural stability and safety of products due to their length accuracy. Traditional screw length inspection relies on manual measurement by operators or screening using simple limit gauges. During inspection, each screw must be checked to ensure it does not exceed the tolerance range, which suffers from low manual efficiency, susceptibility to fatigue-induced omissions, and insufficient sampling frequency. Especially in the continuous feeding scenario of automated production lines, it is highly likely that excessively long or excessively short screws will be selected, leading to subsequent assembly failures.

[0003] While existing technologies attempt to optimize processes through automated equipment (such as vision inspection equipment), the solutions have significant bottlenecks: First, vision inspection is sensitive to the reflective properties of screw surfaces and changes in ambient light, and the system is complex and costly; Second, contact sensor positioning detection requires frequent adjustments to the fixture size to accommodate screws of different specifications, resulting in poor flexibility and the risk of mechanical wear; Third, in multi-hole position detection scenarios, traditional mechanical structures cannot simultaneously monitor the status of all screws, leading to data feedback delays or misjudgments and missed detections. Utility Model Content

[0004] In view of the above, it is necessary to provide an intelligent screw box that can automatically detect the length of multiple screws at one time, reducing the problems of low detection efficiency and accuracy caused by manual detection, and also reducing detection costs and increasing flexibility.

[0005] This application provides an intelligent screw box, including a placement tray, a detection component, a driving component, and a controller. The placement tray is used to place screws, with the screws facing upwards when they are in the placement tray. The detection component is located below the placement tray and can move a preset distance to detect the length of the screws. The driving component is connected to the detection component and is used to drive the detection component to move. The controller is electrically connected to the detection component and the driving component, and is used to control the driving component and acquire the detection information of the detection component. The preset distance is related to the length of the screws.

[0006] In the intelligent screw box of this application, a fully automated screw length detection process is achieved through the coordinated control of the controller, detection component, and drive component. This reduces problems such as low efficiency, sampling omissions, and fatigue-related misjudgments caused by manual operation. In other words, the length of multiple screws can be automatically detected at once, reducing the low detection efficiency and accuracy issues caused by manual inspection. Furthermore, the fully automated screw length detection process achieved through the coordinated control of the controller, detection component, and drive component is structurally simpler and less expensive than inspection equipment such as vision inspection. Additionally, the design that links the preset distance to the screw specification ensures a flexible detection range, allowing it to accommodate the needs of multiple screw sizes and meet the requirements of rapid production line changeovers. Therefore, the intelligent screw box of this application offers greater flexibility.

[0007] In some embodiments, the placement tray has multiple placement holes for placing screws. The placement holes are through holes, and the screws are secured in the placement holes with the nuts facing upwards.

[0008] In some embodiments, a plurality of placement holes are arranged in an array; each placement hole has a chamfer, the maximum diameter of which is located at the upper end of the placement hole.

[0009] In some embodiments, the placement plate, screw, and detection component are all made of conductive materials. When the detection component moves a preset distance, the placement plate, screw, and detection component come into contact with each other to form a continuous current path, and the controller records the length of the screw corresponding to the placement hole as normal.

[0010] In some embodiments, the detection component has a plurality of detection slots corresponding to the placement holes, the diameter of which is larger than the diameter of the screw thread.

[0011] In some embodiments, the detection slot is provided with a plurality of electrodes configured to detect the length of the screw by means of capacitance changes.

[0012] In some embodiments, the detection slot is provided with a photoelectric sensor, which is configured to detect the length of the screw by means of changes in light intensity.

[0013] In some embodiments, the detection slot is provided with a Hall sensor, which is configured to detect the length of the screw using changes in the magnetic field.

[0014] In some embodiments, the smart screw box further includes a housing, a placement tray disposed on the upper side of the housing and cooperating with the housing to form a receiving cavity, and a controller, a drive component and a detection component are all disposed in the receiving cavity.

[0015] In some embodiments, the outer casing or the placement tray is provided with a plurality of indicator lights corresponding to the placement holes on its edge, and the indicator lights on adjacent edges are used to indicate the coordinate position of the placement holes.

[0016] In some embodiments, a human-machine interface is provided on the outer surface of the housing. The human-machine interface is electrically connected to the controller and is used to display detection information and input function commands.

[0017] In some embodiments, the housing is provided with a buzzer, which is electrically connected to the controller and is used to provide an alarm using sound. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the smart screw box according to an embodiment of this application.

[0019] Figure 2 This application Figure 1 An exploded view of the intelligent screw box in the embodiment.

[0020] Figure 3 This is a schematic diagram of the placement disk structure according to an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the structure of the detection component in an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the outer shell of an embodiment of this application.

[0023] Figure 6 This is a schematic diagram of a scenario in which the intelligent screw box of Embodiment 1 of this application detects screws.

[0024] Figure 7 This is a schematic diagram of a scenario in which the intelligent screw box of Embodiment 2 of this application detects screws.

[0025] Explanation of key component symbols:

[0026] 1. Intelligent screw box; 2. Screw; 11. Placement tray; 12. Detection component; 13. Drive component; 14. Housing; 110. Placement hole; 111. Tray; 112. Outer frame; 1121. Wire hole; 120. Contact point; 121. Detection slot; 122. Sensor; 141. Main body; 142. Indicator light; 143. Human-machine interface; 144. Buzzer.

[0027] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0028] In the description of the embodiments in this application, the words "exemplary," "or," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplary," "or," and "for example" is intended to present the relevant concepts in a specific manner.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this application's specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. It should be understood that, unless otherwise stated, " / " in this application means "or". For example, A / B can mean A or B. "And / or" in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. "At least one" refers to one or more. "More than one" refers to two or more. For example, at least one of a, b, or c can represent: a, b, c, a and b, a and c, b and c, and a, b, and c (seven cases).

[0030] It should also be noted that the terms "first" and "second" in the specification, claims and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0031] In fields such as precision assembly, electronic product manufacturing, and industrial maintenance, screws, as basic fasteners, directly affect the structural stability and safety of products due to their length accuracy. Traditional screw length inspection relies on manual measurement by operators or screening using simple limit gauges. During inspection, each screw must be checked to ensure it does not exceed the tolerance range, which suffers from low manual efficiency, susceptibility to fatigue-induced omissions, and insufficient sampling frequency. Especially in automated production lines with continuous material supply, it is highly likely that incorrectly selecting overly long or underly short screws will lead to subsequent assembly failures.

[0032] Manual operation further exacerbates inspection errors. Due to the small size and similar shape of screws, manual placement can easily result in problems such as inverted orientation or tilted nuts. These issues are difficult to accurately identify during subsequent inspections, leading to false positives or false negatives. Especially in mass production, the uncontrollability of manual operation significantly reduces the consistency and reliability of inspections. In addition, manual operation increases labor costs and production cycles, making it difficult to meet the demands of modern manufacturing for efficiency and automation.

[0033] While existing technologies have made some progress in the application of automated equipment (such as vision inspection equipment), they still face many bottlenecks. First, vision inspection solutions are extremely sensitive to the reflective properties of screw surfaces and changes in ambient lighting, leading to unstable inspection results. This is especially true in complex industrial environments where fluctuations in lighting conditions significantly affect inspection accuracy. Furthermore, the implementation of vision systems requires high-resolution cameras, complex algorithms, and high-speed computing units, resulting in high system complexity and cost, limiting their widespread adoption in large-scale or low-cost production scenarios. Second, contact sensors suffer from poor flexibility in screw positioning detection. Frequent adjustments to fixture dimensions are necessary for screws of different sizes, increasing operational complexity and causing accuracy degradation over long-term use due to mechanical wear, thus affecting inspection reliability. Finally, in multi-hole inspection scenarios, traditional mechanical structures struggle to simultaneously monitor the status of all screws, leading to delayed data feedback or misjudgments and missed detections, failing to meet the demands of high-precision and high-efficiency production.

[0034] In summary, the main problems faced by existing technologies in practical applications include the sensitivity of visual inspection, the insufficient flexibility of contact sensors, the limitations of traditional mechanical structures in multi-hole inspection, and the introduction of errors by manual operation. These bottlenecks limit the widespread applicability of automated equipment in screw inspection, necessitating a more stable, flexible, and efficient solution to improve inspection accuracy, reduce costs, and meet the needs of complex production environments.

[0035] Therefore, this application provides an intelligent screw box that can automatically detect the length of multiple screws at once, reducing the problems of low detection efficiency and accuracy caused by manual detection, and also offering lower detection costs and greater flexibility. Some embodiments will be described below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] Implementation Method 1

[0037] Please see Figure 1 This application provides an intelligent screw box 1, which can be used for length detection of screws 2. Please refer to [link / reference]. Figure 2 The intelligent screw box 1 may include a placement tray 11, a detection component 12, a drive component 13, and a controller (not shown in the figure). The placement tray 11 is used to place screws 2, and when screws 2 are in the placement tray 11, the nuts face upwards (see Figure 1). Figure 6 or Figure 7The detection component 12 is positioned below the placement tray 11 and can move a preset distance to detect the length of the screw 2. The driving component 13 is connected to the detection component 12 and is used to drive the detection component 12 to move. The controller is electrically connected to the detection component 12 and the driving component 13, and is used to control the driving component 13 and acquire the detection information of the detection component 12. The preset distance is related to the length of the screw 2. In this case, through the linkage control of the controller, the detection component 12 and the driving component 13, a fully automated screw 2 length detection process is realized, thereby reducing the problems of low efficiency, sampling omissions and fatigue misjudgments caused by manual operation. In other words, the intelligent screw box 1 of this embodiment can automatically detect the length of multiple screws 2 at one time, reducing the problems of low detection efficiency and low detection accuracy caused by manual detection.

[0038] In addition, the screw length detection process is fully automated through the linkage control of the controller, detection component 12 and drive component 13. Compared with inspection equipment such as vision inspection, the structure is simpler and the cost is lower.

[0039] In addition, the design that links the preset distance to the screw 2 specification ensures a flexible detection range, thereby matching the needs of screws 2 of various sizes to meet the requirements of rapid changeover in production lines. In other words, the intelligent screw box 1 of this application is more flexible.

[0040] In some embodiments, the detection information may include the length of the screw 2, the number of normal screws 2, the number of abnormal screws 2, the position of the screw 2, the batch number specification, and the preset distance required for the corresponding batch number specification.

[0041] Please see Figure 3 In some embodiments, the placement tray 11 may have multiple placement holes 110 for placing screws 2. The placement holes 110 are through holes, and the screws 2 are secured in the placement holes 110 with the nuts facing upwards. The through holes and nuts can form a locking structure to force the screws 2 to be placed vertically, thereby reducing detection interference caused by the tilting or misalignment of the nuts during manual placement and significantly improving detection consistency.

[0042] In some embodiments, the placement tray 11 can be a rectangle, and a plurality of placement holes 110 can be arranged in an array on the upper surface of the rectangular placement tray 11.

[0043] In some embodiments, each placement hole 110 has a chamfer (see Figure 6 As shown, the maximum diameter of the chamfer is located at the upper end of the placement hole 110. The array of placement holes 110 improves space utilization and facilitates batch inspection; the chamfer structure guides the screw 2 to fall naturally into the hole, reducing jamming or tilting and ensuring the consistency of the contact end face of the inspection component 12. At the same time, the chamfer can assist in the inspection of longer screws 2.

[0044] Please see Figure 3 In some embodiments, the placement tray 11 may include a tray body 111 and an outer frame 112, with the tray body 111 disposed within the outer frame 112. The tray body 111 may be used to provide placement holes 110, and the tray body 111 is made of a conductive material, such as aluminum. The outer frame 112 is made of plastic, i.e., a non-conductive material, and at least one side of the outer frame 112 may be provided with a wire hole 1121 for facilitating the passage of wires.

[0045] Please see Figure 4 In some embodiments, the detection component 12 corresponding to the placement tray 11 may also be rectangular, and the detection component 12 has a plurality of contacts 120 corresponding to the placement holes 110. The contacts 120 can contact the screws 2 placed in the placement holes 110 when the detection component 12 moves toward the placement tray 11.

[0046] In some embodiments, the controller may be integrated into the drive component 13. The controller may include components with control functions such as a PLC (Programmable Logic Controller) control module, a CPU (Central Processing Unit) or an MCU (Microcontroller Unit).

[0047] In some embodiments, the driving component 13 may include a stepper motor. The stepper motor is electrically connected to the controller, and under the control of the controller, the stepper motor can drive the detection component 12 to move a preset distance toward the placement disk 11.

[0048] Please continue reading. Figure 2 In some embodiments, the smart screw box 1 may further include a housing 14, with a placement tray 11 disposed on the upper side of the housing 14 and cooperating with the housing 14 to form a receiving cavity. The controller, drive component 13, and detection component 12 are all disposed within the receiving cavity. In this case, the housing 14 and the placement tray 11 form a sealed cavity, which can protect the internal electronic components from external impacts or contaminants, while also enabling a modular design that facilitates overall maintenance or component replacement.

[0049] In some embodiments, the outer shell 14 may include a body 141, which may also be a rectangular body corresponding to the placement plate 11, and the body 141 may be a rectangular groove with a cavity.

[0050] In some embodiments, the main body 141 of the housing 14 may have multiple layered structures, each layered structure being configured to match the installation requirements of the placement disk 11, the detection component 12, or the drive component 13. This facilitates rapid assembly of the various components.

[0051] Please see Figure 5 In some embodiments, the outer casing 14 or the placement tray 11 has multiple indicator lights 142 corresponding to the placement holes 110 on its edges. The indicator lights 142 on adjacent edges can be used to indicate the coordinate positions of the placement holes 110. In this case, multiple indicator lights 142 work together to locate the hole coordinates of the abnormal screw 2, visually indicating the specific problem location to the operator, shortening troubleshooting time, and thereby reducing production interruptions caused by excessive or missed screw removal. It should be noted that... Figure 5 The illustration shows that the indicator light 142 is disposed on the outer casing 14. In this embodiment of the application, the indicator light 142 is disposed on the edge of the outer casing 14 or the placement tray 11, that is, the indicator light 142 can also be disposed on the placement tray 11.

[0052] Please see Figure 5 In some embodiments, a human-machine interface 143 may be provided on the outer surface of the housing 14. The human-machine interface 143 is electrically connected to the controller and is used to display detection information and input function commands. In this case, the human-machine interface 143 can realize real-time data display and command input, simplify parameter adjustment and detection result traceability processes, and support users to quickly respond to anomalies and optimize production strategies.

[0053] Please see Figure 5 In some embodiments, the housing 14 may be equipped with a buzzer 144, which is electrically connected to the controller and is used to provide an audible alarm. In this case, the audible alarm of the buzzer 144 can be linked to the detection results, immediately alerting the operator when an abnormal length of the screw 2 is detected, reducing the number of defective screws 2 flowing into subsequent processes and lowering quality risks.

[0054] Please see Figure 6 In this embodiment, the placement plate 11, screw 2, and detection component 12 are all made of conductive materials. When the detection component 12 moves a preset distance, the placement plate 11, screw 2, and detection component 12 come into contact with each other to form a continuous current path, and the controller records that the length of the screw 2 corresponding to the placement hole 110 is normal. In this case, based on the conductive material detection circuit design, the length of the screw 2 can be quickly determined to meet the specifications by the current flow, and the result is fed back to the controller in real time, eliminating the need for manual verification and improving efficiency.

[0055] For details, please continue reading Figure 6 The detection process in this embodiment may include: taking the number of screws 2 in the figure as an example, after the screws 2 are placed on the placement tray 11, the controller controls the drive component 13 to drive the detection component 12 from the initial position X1 toward the placement tray 11 based on the screw specifications input by the operator from the human-machine interface 143 (i.e., Figure 6 Move the preset distance (i.e., in the D direction) Figure 6The distance from X1 to X3); during this process, when the detection component 12 moves from X1 to X2, the controller records whether the screws 2 in each placement hole 110 are connected to the placement plate 11 and the contact 120 to generate an electrical signal to determine whether the length of the screws 2 meets the production requirements. Among them, in the movement distance from X2 to X3, the screws 2 with a connection signal are normal screws 2 (such as screws 2b, 2c and 2d, where screw 2b is the upper limit of normal length and screw 2d is the lower limit of normal length); the screws 2 after X3 (such as screw 2e) do not have a connection signal, so they are abnormal screws 2; in the movement distances from X1 to X2 and from X2 to X3, although screw 2a has a connection signal, when the contact 120 reaches X3, screw 2a is abnormal in length (i.e., too long), and under the chamfering fit of the placement hole 110, it will be pushed out of the placement hole 110 by the contact 120, so it will also lose the connection signal, thus determining that screw 2a is also an abnormal screw 2.

[0056] In some embodiments, the contacts 120 of the detection component 12 can be continuously energized, i.e., energized at the initial position X1. In other embodiments, the contacts 120 of the detection component 12 can also be energized at the X2 position, thereby saving power.

[0057] In some embodiments, the controller can also control the human-machine interface 143 to display the detection information of the screw 2 based on the status of the screw 2, control the indicator light 142 to turn on and off to indicate the position of the screw 2, and control the buzzer 144 to sound an alarm. For example, when the operator takes out a normal screw 2 for processing and assembly, the controller can update the number of screws 2 in the detection information; when the screw 2 is determined to be an abnormal screw 2a or abnormal screw 2e, the controller can control the indicator light 142 to indicate the position coordinates of the abnormal screw 2a or abnormal screw 2e; when the operator mistakenly takes an abnormal screw 2a or abnormal screw 2e, the controller can control the buzzer 144 to sound an alarm.

[0058] Implementation Method 2

[0059] It should be noted that the difference between Embodiment 2 and Embodiment 1 is that in Embodiment 1, the detection component 12 detects the length of the screw 2 through contact with the contact point 120. This detection process requires the use of a placement plate 11 (e.g., the placement plate 11 needs to be conductive, and the placement hole 110 needs to be chamfered) and the screw 2. In Embodiment 2, the detection component 12 can detect the length of the screw 2 non-contactly. This reduces the problem of screw wear caused by contact with the screw 2, and also reduces the problem of decreased detection accuracy for various screw sizes due to inaccurate placement hole 110 dimensions (e.g., an abnormal screw 2a might be misjudged as a normal screw 2 if it is difficult to be pushed out by the contact point 120 due to the axial length relationship of the placement hole 110). The specific details of Embodiment 2 are as follows:

[0060] In this embodiment, please refer to Figure 4 and Figure 7 The detection component 12 may have multiple detection slots 121 corresponding to the placement holes 110 (i.e., Figure 4 The contact 120 is replaced with a detection groove 121, the diameter of which is larger than the thread diameter of the screw 2. This larger diameter ensures smooth entry of the screw 2 thread into the detection area, reducing measurement errors or component damage caused by friction and wear, and accommodating screws 2 with different diameters. Multiple sensors 122 can be mounted on the side of the detection groove 121 to detect the length of the screw 2.

[0061] In some embodiments, the side of the detection groove 121 may be provided with multiple electrodes, which are configured to detect the length of the screw 2 by means of capacitance changes. That is, the sensor 122 may be an electrode that detects the length by means of capacitance changes. In this case, the capacitive detection electrode senses the capacitance value change corresponding to the end position of the screw 2 in a non-contact manner, which can reduce mechanical wear problems, enhance detection sensitivity, and improve compatibility with screws 2 with different surface materials.

[0062] In some embodiments, the electrode may be a capacitance sensor, which can be used to detect changes in capacitance.

[0063] In some embodiments, a photoelectric sensor may be provided on the side of the detection slot 121. The photoelectric sensor is configured to detect the length of the screw 2 by utilizing changes in light intensity; that is, the sensor 122 may be a photoelectric sensor that detects length by utilizing changes in light intensity. In this case, the photoelectric sensor detects the end position of the screw 2 by utilizing changes in light reflection intensity, which has the advantages of anti-electromagnetic interference and fast response speed, and is suitable for high-frequency detection scenarios in complex industrial environments.

[0064] In some embodiments, a Hall sensor may be provided on the side of the detection slot 121. The Hall sensor is configured to detect the length of the screw 2 by utilizing changes in the magnetic field. The sensor 122 may be a Hall sensor that detects the length by utilizing changes in the magnetic field. In this case, the Hall sensor senses the metal position at the end of the screw 2 by using a magnetic field, and has strong robustness to environmental factors such as oil and dust, which can ensure long-term stable detection accuracy and reduce maintenance requirements.

[0065] Please continue reading. Figure 7 The detection process in this embodiment may include: taking the number of screws 2 in the figure as an example, after the screws 2 are placed on the placement tray 11, the controller controls the drive component 13 to drive the detection component 12 from the initial position X1 toward the placement tray 11 based on the screw specifications input by the operator from the human-machine interface 143 (i.e., Figure 7Move the preset distance (i.e., in the D direction) Figure 7 (The distance from X1 to X3); During this process, when the detection component 12 moves from X1 to X2, the controller records the electrical signals generated by each sensor 122 using changes in capacitance, brightness, or magnetic field to determine whether the length of the screw 2 meets the production requirements. Among them, in the movement distance from X2 to X3, the screws with sensing signals are normal screws 2 (such as screws 2b, 2c, and 2d, where screw 2b is the upper limit of normal length and screw 2d is the lower limit of normal length); the screws 2 after X3 (such as screw 2e) have no sensing signals, so they are abnormal screws 2; in the movement distances from X1 to X2 and from X2 to X3, although screw 2a has a conduction signal, the sensing signal of sensor 122 can be set to whether it is greater than a preset value. For example, corresponding to the distance from X2 to X3, the value of capacitance change, light change, or magnetic field change should be within the range of 0 to the preset value. After screw 2a passes through X1 to X3, the sensor 122 at the bottom of the detection groove 121 and the sensor 122 at the top of the detection groove 121 can detect that the cumulative value of the sensing signal (i.e., the cumulative change in capacitance, light, or magnetic field) is greater than the preset value, thus determining that screw 2a is also an abnormal screw 2.

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

Claims

1. A smart screw box, characterized in that, The device includes a placement tray, a detection component, a drive component, and a controller. The placement tray is used to place screws, with the screws facing upwards when they are in the placement tray. The detection component is located below the placement tray and can move a preset distance to detect the length of the screws. The drive component is connected to the detection component and is used to drive the detection component to move. The controller is electrically connected to the detection component and the drive component, and is used to control the drive component and acquire the detection information of the detection component. The preset distance is related to the length of the screw.

2. The intelligent screw box according to claim 1, characterized in that, The placement tray has multiple placement holes for placing the screws. The placement holes are through holes, and the screws are secured in the placement holes with the nuts facing upwards.

3. The intelligent screw box according to claim 2, characterized in that, The plurality of placement holes are arranged in an array; each placement hole has a chamfer, the maximum diameter of which is located at the upper end of the placement hole.

4. The intelligent screw box according to claim 3, characterized in that, The placement plate, the screw, and the detection component are all made of conductive materials. When the detection component moves the preset distance, the placement plate, the screw, and the detection component come into contact with each other to form a continuous current path, and the controller records that the length of the screw corresponding to the placement hole is normal.

5. The intelligent screw box according to claim 2, characterized in that, The detection component has multiple detection slots corresponding to the placement holes, and the diameter of the detection slots is larger than the diameter of the screw threads.

6. The intelligent screw box according to claim 5, characterized in that, The detection slot is provided with multiple electrodes, which are configured to detect the length of the screw by utilizing changes in capacitance.

7. The intelligent screw box according to claim 5, characterized in that, The detection slot is equipped with a photoelectric sensor, which is configured to detect the length of the screw by utilizing changes in light intensity.

8. The intelligent screw box according to claim 5, characterized in that, The detection slot is equipped with a Hall sensor, which is configured to detect the length of the screw by utilizing changes in the magnetic field.

9. The intelligent screw box according to claim 2, characterized in that, The intelligent screw box also includes an outer shell, the placement tray is disposed on the upper side of the outer shell and cooperates with the outer shell to form a receiving cavity, and the controller, the driving component and the detection component are all disposed in the receiving cavity.

10. The intelligent screw box according to claim 9, characterized in that, The outer casing or the edge of the placement tray is provided with multiple indicator lights corresponding to the placement holes, and the indicator lights on adjacent edges are used to indicate the coordinate position of the placement holes.

11. The intelligent screw box according to claim 10, characterized in that, A human-machine interface is provided on the outer surface of the housing. The human-machine interface is electrically connected to the controller. The human-machine interface is used to display the detection information and to input function commands.

12. The intelligent screw box according to claim 10, characterized in that, The outer casing is equipped with a buzzer, which is electrically connected to the controller and is used to issue an alarm using sound.

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