Self-detecting stamping die with easy demolding

Abstract

The application discloses a kind of self-detection stamping die of easy demoulding, it is related to stamping die technical field, including lower die seat and be set on pressure block of lower die seat, lower die seat is provided with multiple degrees of freedom detection mechanism;Multiple degrees of freedom detection mechanism is provided with laser detection head;Multiple degrees of freedom detection mechanism and laser detection head between self-adapting detection probe mechanism are provided with.The application is set by multiple degrees of freedom detection mechanism and self-adapting detection probe mechanism, by the cooperation of the first angle adjusting mechanism, second angle adjusting mechanism of multiple degrees of freedom detection mechanism and self-adapting detection probe mechanism, three-dimensional movement of laser detection head is realized by cooperation.The blind area of traditional detection such as complex stamping part's special-shaped curved surface, deep cavity interior can be covered further, without increasing multiple detection components, avoid mold structure redundancy, both improve the self-detection range of complex stamping part, and balance the contradiction between detection range and mold structure complexity, stamping efficiency and demoulding effect.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and in particular to an easy-to-demold, self-detecting stamping die. Background Technology

[0002] Under the core trend of intelligent manufacturing transformation and upgrading, stamping dies, as key equipment in metal forming and processing, directly determine the intelligent manufacturing adaptability of the production line through their functional integration and intelligent inspection level. To meet the core requirements of intelligent manufacturing for real-time control of production efficiency and product quality, easy-release self-inspection stamping dies have emerged. By integrating demolding and self-inspection functions, they achieve integrated operation of stamping forming and quality inspection, reducing manual intervention and improving production continuity. However, existing easy-release self-inspection stamping dies still have the following shortcomings during use:

[0003] For example, Chinese patent CN108421895A discloses an easy-to-demold self-inspection stamping die, which includes a base, a forming module, and a stamping rod; a piezoelectric device is installed at the center of the top surface of the base; the forming module includes symmetrically arranged stamping blocks slidably mounted on the slide groove, and symmetrical positioning blocks are vertically fixed to the top of the stamping blocks; the rear end of the stamping blocks is provided with symmetrically fixed blocks vertically fixed to the base, and a tension spring connects the stamping blocks and the fixed blocks; the stamping rod is located directly above the piezoelectric device; this easy-to-demold self-inspection stamping die is a device that automatically adjusts the state of the stamping rod by detecting its state, thereby making the stamping dimensions of the workpiece more accurate; at the same time, it can achieve demolding operation by automatically separating the stamping die.

[0004] The aforementioned device relies on a piezoelectric device at the center of the base to detect the status of the stamping rod. It can only achieve macroscopic adjustment of the stamping size. The detection dimension is limited to the pressure and displacement parameters of the stamping rod. It cannot accurately detect local minor blind spots such as the contour accuracy of irregular curved surfaces and the uniformity of wall thickness inside deep cavities. The detection range only covers the macroscopic forming state of the stamped parts and does not address the local quality detection needs of complex structures. It cannot achieve real-time feedback of quality problems and affects the continuous operation efficiency of the production line. Summary of the Invention

[0005] The purpose of this application is to provide an easy-to-demold, self-inspection stamping die that can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: an easy-to-demold self-inspection stamping die, comprising a lower die base and a pressure block disposed on the lower die base, wherein a multi-degree-of-freedom detection mechanism is disposed on the lower die base; a laser detection head is disposed on the multi-degree-of-freedom detection mechanism and is used to detect the inner cavity of the stamped workpiece; an adaptive detection probe mechanism is disposed between the multi-degree-of-freedom detection mechanism and the laser detection head and is used to adjust the position of the laser detection head along the axial direction of the laser detection head; the multi-degree-of-freedom detection mechanism includes:

[0007] A first angle adjustment mechanism is disposed on the side wall of the lower mold base. The first angle adjustment mechanism includes a rotating rod, which is rotatably connected to the lower mold base via a bearing around its axis. A detection arm is fixedly mounted on the rotating rod perpendicular to its axis, and the laser detection head is coaxially mounted on the detection arm. The first angle adjustment mechanism is used to drive the laser detection head to rotate around the axis of the rotating rod.

[0008] The second angle adjustment mechanism includes a first miniature electric actuator, a connecting rope, and multiple connecting rods; one connecting rod is coaxially connected to the detection arm, and another connecting rod away from the first connecting rod is coaxially connected to the laser detection head; adjacent connecting rods are hinged together by hinge blocks, and a first compression spring is provided between adjacent connecting rods; when the first compression spring is unrestrained, it drives the multiple connecting rods to an arc-shaped state, the first miniature electric actuator is mounted on the detection arm, one end of the connecting rope is fixed to the output end of the first miniature electric actuator, and the other end of the connecting rope passes through the multiple connecting rods and is connected to the adaptive detection probe mechanism.

[0009] Preferably, a telescopic protective tube is provided between adjacent connecting rods to shield the hinge block and the first compression spring.

[0010] Preferably, the first angle adjustment mechanism further includes a motor, an angle displacement sensor, and an elastic connecting sleeve; the motor is mounted on the lower mold base, and the output end of the motor is coaxially connected to the rotating rod; the angle displacement sensor is mounted on the housing of the motor, and the detection end of the angle displacement sensor is coaxially connected to the rotating shaft at the tail end of the motor through the elastic connecting sleeve.

[0011] Preferably, the adaptive detection probe mechanism includes a threaded connector, a ceramic detection rod, and a second micro electric actuator; the ceramic detection rod is coaxially connected to the detection arm via the threaded connector, the laser detection head is coaxially slidably connected to the ceramic detection rod along its length, the second micro electric actuator is mounted on the ceramic detection rod, and the output shaft of the second micro electric actuator is coaxially connected to the laser detection head.

[0012] Preferably, a buffer mechanism is provided between the output shaft of the second micro electric actuator and the laser detection head; when the laser detection head is impacted, the buffer mechanism is used to provide buffering force for the movement of the laser detection head.

[0013] Preferably, the buffer mechanism includes a sliding plate, a positioning sleeve, a telescopic airbag, a sliding shaft, and a second compression spring; the sliding plate is coaxially fixed to the output end of the second micro electric actuator, the positioning sleeve is coaxially fixed inside the ceramic detection rod, the telescopic airbag is disposed between the sliding plate and the positioning sleeve, and the sliding plate, the positioning sleeve, and the telescopic airbag form a sealed cavity; the sliding shaft is coaxially inserted into the positioning sleeve, and one end of the sliding shaft is inserted into the cavity, the other end of the sliding shaft is coaxially connected to the laser detection head, the second compression spring is disposed inside the cavity, one end of the second compression spring is connected to the sliding plate, the other end of the second compression spring is connected to the sliding shaft, and a vent hole communicating with the cavity is provided on the side wall of the ceramic detection rod.

[0014] Preferably, the buffer mechanism further includes an airflow control mechanism; the airflow control mechanism is disposed between the laser detection head and the buffer mechanism; when the laser detection head is impacted, the airflow control mechanism generates an airflow that blows towards the laser emitting end of the laser detection head.

[0015] Preferably, the airflow control mechanism includes a telescopic hose and a cleaning nozzle; the telescopic hose is sleeved on the laser detection head, one end of the telescopic hose is connected to the laser detection head, and the other end of the telescopic hose is connected to the ceramic detection rod; the end of the laser detection head is provided with multiple cleaning nozzles, all of which are in communication with the inside of the telescopic hose; the ceramic detection rod is provided with an air guide hole, and the cavity is in communication with the inside of the telescopic hose through the air guide hole.

[0016] Preferably, the lower mold base is provided with a detection path control mechanism, which includes a controller; the controller is installed on the lower mold base, and the signal interface of the controller is connected to the motor, the angle displacement sensor, the first micro electric actuator, the second micro electric actuator and the laser detection head through signal control.

[0017] Preferably, the lower die base is provided with a positioning mechanism, which includes a mounting frame, a cylinder, and a support frame; the mounting frame is fixed above the lower die base, the cylinder is mounted on the mounting frame, and a pressure plate is fixed to the output end of the cylinder; the support frame is fixed to one side of the pressure block; allowing the stamped workpiece to be clamped between the pressure plate and the support frame; the support frame is provided with a misalignment groove, allowing a laser detection head to be inserted into the misalignment groove to detect the inner cavity of the stamped workpiece.

[0018] In summary, the technical effects and advantages of this invention are as follows:

[0019] 1. This invention employs a multi-degree-of-freedom (DOF) detection mechanism and an adaptive detection probe mechanism. The first angle adjustment mechanism of the multi-DOF detection mechanism drives the detection arm to rotate, while the second angle adjustment mechanism achieves laser detection head bending through a connecting rod hinge and spring drive. The adaptive detection probe mechanism drives the laser detection head to extend and retract axially via a miniature electric actuator. These three mechanisms work together to achieve multi-dimensional movement of the laser detection head. This structure effectively covers traditional blind spots such as irregular curved surfaces and deep cavities of complex stamped parts, eliminating the need for multiple sets of detection components and avoiding redundancy in the mold structure. The detection action is staggered with the stamping and demolding processes, improving the self-inspection range of complex stamped parts while balancing the contradiction between the detection range and the complexity of the mold structure, stamping efficiency, and demolding effect, thus meeting the core requirement of intelligent manufacturing for integrated mold self-inspection.

[0020] 2. This invention employs a detection path control mechanism. The controller presets and stores detection path programs for different stamped parts, receives feedback signals from angle displacement sensors to form a closed-loop control, and automatically coordinates components such as the multi-degree-of-freedom detection mechanism and the adaptive detection probe mechanism to move along the preset trajectory. This control method achieves full automation of the detection process without manual intervention, significantly improving detection efficiency. Simultaneously, the closed-loop control ensures the accuracy of the laser detection head's movement, making the detection data more reliable. The preset path function allows the mold to quickly adapt to different types of complex stamped parts; detection can be completed simply by calling the corresponding program, improving the mold's versatility and production flexibility, and further enhancing the mold's intelligent manufacturing adaptability.

[0021] 3. This invention utilizes an airflow control mechanism to generate high-pressure gas in the sealed cavity during the collision of the buffer mechanism. This gas is then ejected from the cleaning nozzle through the air guide hole and telescopic hose to clean the emitting end of the laser detection head. This structure requires no additional power source, simplifying the mechanism design and reducing energy consumption. The cleaning airflow can promptly remove metal debris, oil, and other impurities adhering to the emitting end, preventing interference with the detection signal and ensuring that the detection accuracy remains at a high level. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 This is a three-dimensional magnified structural diagram of the multi-degree-of-freedom detection mechanism of the present invention;

[0025] Figure 3 This is a partially cross-sectional, enlarged three-dimensional structural diagram of the second angle adjustment mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle;

[0027] Figure 5 This is a three-dimensional magnified structural diagram of the adaptive detection probe mechanism of the present invention;

[0028] Figure 6 This is a partially cross-sectional, three-dimensional magnified structural diagram of the adaptive detection probe mechanism of the present invention;

[0029] Figure 7 This is a partially cross-sectional, three-dimensional enlarged structural diagram of the buffer mechanism of the present invention;

[0030] Figure 8 For the present invention Figure 7 A magnified structural diagram of region B in the middle;

[0031] Figure 9 For the present invention Figure 7 A magnified structural diagram of region C in the middle;

[0032] Figure 10 This is a front view enlarged structural diagram of the airflow control mechanism of the present invention.

[0033] In the diagram: 1. Lower mold base; 2. Pressure block; 3. Positioning mechanism; 31. Mounting bracket; 32. Cylinder; 33. Support frame; 4. Multi-degree-of-freedom detection mechanism; 41. First angle adjustment mechanism; 411. Rotating rod; 412. Detection arm; 413. Motor; 414. Angle displacement sensor; 415. Elastic connecting sleeve; 42. Second angle adjustment mechanism; 421. Connecting rod; 422. Hinge block; 423. First compression spring; 424. Telescopic protective tube; 425. First miniature electric actuator; 26. Connecting rope; 5. Laser detection head; 6. Adaptive detection probe mechanism; 61. Threaded connector; 62. Ceramic detection rod; 63. Second miniature electric actuator; 64. Buffer mechanism; 641. Slide plate; 642. Positioning sleeve; 643. Telescopic airbag; 644. Sliding shaft; 645. Second compression spring; 646. Vent; 647. Airflow control mechanism; 6471. Air guide hole; 6472. Telescopic hose; 6473. Cleaning nozzle; 7. Detection path control mechanism; 71. Controller. Detailed Implementation

[0034] 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.

[0035] Example 1: Please refer to Figures 1-4 The diagram shows an easy-to-demold self-inspection stamping die, including a lower die base 1 and a pressure block 2 disposed on the lower die base 1. A multi-degree-of-freedom detection mechanism 4 is disposed on the lower die base 1. A laser detection head 5 is disposed on the multi-degree-of-freedom detection mechanism 4 and is used to inspect the inner cavity of the stamped workpiece. An adaptive detection probe mechanism 6 is disposed between the multi-degree-of-freedom detection mechanism 4 and the laser detection head 5 and is used to adjust the position of the laser detection head 5 along its axial direction. The multi-degree-of-freedom detection mechanism 4 includes a first angle adjustment mechanism 41 and a second angle adjustment mechanism 42. The first angle adjustment mechanism 41 is disposed on the side wall of the lower die base 1 and includes a rotating rod 411. The rotating rod 411 is rotatably connected to the lower die base 1 via a bearing around its axis. A detection arm 412 is fixedly disposed on the rotating rod 411 perpendicular to its axis, and the laser detection head 5 is coaxially mounted on the detection arm 412. 41 is used to drive the laser detection head 5 to rotate around the axis of the rotating rod 411; the second angle adjustment mechanism 42 includes a first micro electric push rod 425, a connecting rope 426 and multiple connecting rods 421; the multiple connecting rods 421 are coaxially connected; one of the connecting rods 421 is coaxially connected to the detection arm 412, and another connecting rod 421 away from the connecting rod 421 is coaxially connected to the laser detection head 5; adjacent connecting rods 421 are hinged by a hinge block 422, and a first compression spring 423 is provided between adjacent connecting rods 421; when the first compression spring 423 is unrestrained, the first compression spring 423 is used to drive the multiple connecting rods 421 to an arc state, the first micro electric push rod 425 is installed on the detection arm 412, one end of the connecting rope 426 is fixed to the output end of the first micro electric push rod 425, and the other end of the connecting rope 426 passes through the multiple connecting rods 421 and is connected to the adaptive detection probe mechanism 6.

[0036] It should be noted that after the stamping operation is completed, the first angle adjustment mechanism 41 of the multi-degree-of-freedom detection mechanism 4 is activated. The motor 413 drives the rotating rod 411 to rotate around its axis. The rotating rod 411 drives the detection arm 412 to rotate synchronously, so that the laser detection head 5 is initially aligned with the detection area of ​​the stamped part. When the first micro electric push rod 425 is not activated, the first compression spring 423 is in its natural state, and the multiple connecting rods 421 remain in a straight state. When it is necessary to detect irregular curved surfaces or deep cavity areas, the first micro electric push rod 425 extends, the connecting rope 426 releases the tension on the connecting rod 421, releases the restriction on the first compression spring 423, and the first compression spring 423 releases its elastic potential energy, pushing the adjacent connecting rods 421 to rotate around the hinge block 422, so that the multiple connecting rods 421 form a continuous arc, causing the laser detection head 5 to bend towards the target detection area. Meanwhile, the adaptive detection probe mechanism 6 drives the laser detection head 5 to slide along its axis, adjusting the extension length of the laser detection head 5 so that it can penetrate deep into the cavity or approach the irregular curved surface. After the laser detection head 5 is started, it detects parameters such as the contour accuracy and wall thickness uniformity of the stamped part.

[0037] Through the coordinated action of the first angle adjustment mechanism 41 and the second angle adjustment mechanism 42 of the multi-degree-of-freedom detection mechanism 4, the laser detection head 5 can rotate and bend in an arc. Adjacent connecting rods 421 are hinged by hinge blocks 422 and elastically driven by the first compression spring 423, enabling rapid and smooth arc deformation. This ensures the smoothness and accuracy of the bending action of the laser detection head 5, further expanding its detection coverage, especially suitable for the fitting detection of irregular curved surfaces. Furthermore, in conjunction with the adaptive detection probe mechanism 6, the axial adjustment of the laser detection head 5's position allows for comprehensive coverage of blind spots such as the sides, tops, irregular curved surfaces, and deep cavities of complex stamped parts, improving the detection range. The entire mechanism is integrated into the lower mold base 1, resulting in a compact structure that does not significantly increase the structural complexity of the mold. All detection actions are performed after stamping, staggering the stamping and demolding processes, thus not affecting stamping efficiency or demolding effect.

[0038] See Figures 2-4 Telescopic protective tubes 424 are provided between adjacent connecting rods 421 to shield the hinge block 422 and the first compression spring 423.

[0039] It should be noted that during the bending and resetting process of the connecting rod 421, the telescopic protective tube 424 extends and retracts with the shape change of the connecting rod 421, always maintaining its shielding over the hinge block 422 and the first compression spring 423. The telescopic protective tube 424 effectively prevents impurities such as metal shavings and lubricating oil generated during mold operation from entering the mating gap between the hinge block 422 and the first compression spring 423, thus avoiding impurities causing hinge jamming or spring failure.

[0040] See Figure 2 The first angle adjustment mechanism 41 also includes a motor 413, an angle displacement sensor 414, and an elastic connecting sleeve 415. The motor 413 is installed on the lower mold base 1, and the output end of the motor 413 is coaxially connected to the rotating rod 411. The angle displacement sensor 414 is installed on the housing of the motor 413, and the detection end of the angle displacement sensor 414 is coaxially connected to the rotating shaft at the tail end of the motor 413 through the elastic connecting sleeve 415.

[0041] It should be noted that when the rotation angle of the laser detection head 5 needs to be adjusted, the motor 413 starts and drives the rotating rod 411 to rotate. The rotating rod 411 drives the detection arm 412 and the laser detection head 5 to rotate synchronously. During this process, the rotating shaft at the tail end of the motor 413 drives the detection end of the angle displacement sensor 414 to rotate through the elastic connecting sleeve 415. The angle displacement sensor 414 detects the rotation angle in real time to detect and adjust the operating status of the motor 413, thereby realizing closed-loop control of the rotation angle.

[0042] The cooperation between the angle displacement sensor 414 and the elastic connecting sleeve 415 enables real-time capture and feedback of rotation angle signals, facilitating timely correction of angle deviations and ensuring that the laser detection head 5 is always aligned with the preset detection area, thus significantly improving detection accuracy. The elastic connecting sleeve 415 buffers vibrations generated during motor 413 operation, preventing vibrations from being transmitted to the angle displacement sensor 414 and affecting detection accuracy. It also reduces rigid impact between the motor 413 and the angle displacement sensor 414, extending their service life.

[0043] See Figure 3 and Figure 5 The adaptive detection probe mechanism 6 includes a threaded connector 61, a ceramic detection rod 62, and a second micro electric actuator 63. The ceramic detection rod 62 is coaxially connected to the detection arm 412 through the threaded connector 61. The laser detection head 5 is coaxially slidably connected to the ceramic detection rod 62 along its length. The second micro electric actuator 63 is installed on the ceramic detection rod 62, and the output shaft of the second micro electric actuator 63 is coaxially connected to the laser detection head 5.

[0044] It should be noted that when the laser detection head 5 needs to penetrate deep into the cavity or adjust its distance from the surface of the stamped part, the output shaft of the second micro electric actuator 63 extends or retracts, driving the laser detection head 5 to slide along the axis of the ceramic detection rod 62 until it reaches the preset detection position. The threaded connector 61 facilitates the disassembly and replacement of the ceramic detection rod 62, allowing for the replacement of a suitable ceramic detection rod 62 according to different detection requirements.

[0045] The ceramic detection rod 62 possesses high strength, wear resistance, and corrosion resistance, enabling it to adapt to the harsh working environment of the mold. It is not easily deformed or damaged during long-term use, ensuring the stability of the sliding adjustment of the laser detection head 5. The second micro electric actuator 63 drives the laser detection head 5 to adjust its axial position with high precision and fast response speed. It can accurately control the extension length of the laser detection head 5, allowing it to penetrate deep into areas such as deep cavities, thus facilitating deep cavity inspection of stamped parts. The adaptive detection probe mechanism 6, in conjunction with the multi-degree-of-freedom detection mechanism 4, enables the laser detection head 5 to adjust its motion in three dimensions: rotation, bending, and axial extension. This allows for comprehensive coverage of all inspection areas of complex stamped parts, enhancing the mold's self-inspection capabilities.

[0046] See Figure 6 A buffer mechanism 64 is provided between the output shaft of the second micro electric actuator 63 and the laser detection head 5; when the laser detection head 5 is impacted, the buffer mechanism 64 is used to provide buffering force for the movement of the laser detection head 5.

[0047] It should be noted that when the laser inspection head 5 accidentally collides with the stamped part or other components of the mold during the inspection process, the impact force on the laser inspection head 5 is transmitted to the buffer mechanism 64. The buffer mechanism 64 generates a buffering force through its own structural deformation, slowing down the movement speed of the laser inspection head 5, absorbing the collision energy, and preventing the laser inspection head 5 from being damaged by a violent collision. During the sliding adjustment of the laser inspection head 5 along the ceramic inspection rod 62, the buffer mechanism 64 is always in a standby state and does not affect the normal position adjustment of the laser inspection head 5; the buffering function is only activated when a collision occurs.

[0048] See Figures 6-8 The buffer mechanism 64 includes a sliding plate 641, a positioning sleeve 642, a telescopic airbag 643, a sliding shaft 644, and a second compression spring 645. The sliding plate 641 is coaxially fixed to the output end of the second micro electric actuator 63, the positioning sleeve 642 is coaxially fixed inside the ceramic detection rod 62, the telescopic airbag 643 is disposed between the sliding plate 641 and the positioning sleeve 642, and the sliding plate 641, the positioning sleeve 642, and the telescopic airbag 643 form a sealed cavity. The sliding shaft 644 is coaxially inserted into the positioning sleeve 642, and one end of the sliding shaft 644 is inserted into the cavity. The other end of the sliding shaft 644 is coaxially connected to the laser detection head 5. The second compression spring 645 is disposed inside the cavity, and one end of the second compression spring 645 is connected to the sliding plate 641. The other end of the second compression spring 645 is connected to the sliding shaft 644. A vent 646 communicating with the cavity is opened on the side wall of the ceramic detection rod 62.

[0049] It should be noted that when the laser detection head 5 is impacted, it drives the sliding shaft 644 to move into the sealed cavity. The sliding shaft 644 compresses the second compression spring 645 and the telescopic airbag 643, causing the gas in the sealed cavity to slowly escape through the vent 646. The elastic restoring force of the second compression spring 645 and the damping force during gas escape together form a buffering force, slowing down the movement speed of the sliding shaft 644 and providing buffer protection for the laser detection head 5. After the impact, the elastic restoring force of the second compression spring 645 pushes the sliding shaft 644 back to its original position, and the external gas re-enters the sealed cavity through the vent 646, while the telescopic airbag 643 returns to its original state.

[0050] Through the synergistic action of the second compression spring 645 and the telescopic airbag 643, combined with the damping effect of the gas inside the sealed cavity, a multi-stage buffer structure is formed, providing significant buffering effect and effectively absorbing collision energy of varying intensities, thus offering comprehensive protection for the laser detection head 5. The coaxial cooperation between the sliding shaft 644 and the positioning sleeve 642 ensures the stability of the laser detection head 5's movement during the buffering process, preventing it from shifting or tilting, and ensuring the normal operation of subsequent detection work.

[0051] See Figures 6-7 The buffer mechanism 64 also includes an airflow control mechanism 647; the airflow control mechanism 647 is disposed between the laser detection head 5 and the buffer mechanism 64; when the laser detection head 5 is impacted, the airflow control mechanism 647 generates an airflow that blows toward the laser emitting end of the laser detection head 5.

[0052] It should be noted that when the laser detection head 5 is impacted and moves the sliding shaft 644 into the sealed cavity, the sliding shaft 644 compresses the gas inside the sealed cavity, increasing the gas pressure. Some of the high-pressure gas enters the internal channel of the airflow control mechanism 647 through the air guide hole 6471 on the ceramic detection rod 62, and is finally ejected from the cleaning nozzle 6473 at the end of the laser detection head 5, forming an airflow that blows towards the emitting end of the laser detection head 5. This airflow removes metal debris, dust, lubricating oil, and other impurities adhering to the emitting end of the laser detection head 5, ensuring the cleanliness of the laser emission channel.

[0053] The airflow control mechanism 647 utilizes the high-pressure gas generated within the sealed cavity during the buffering process to create a clean airflow. This eliminates the need for an additional power source, simplifying the mechanism and reducing energy consumption. The airflow cleans the emitting end of the laser detection head 5 in real time, preventing impurities from affecting laser emission and reception, and ensuring consistently high detection accuracy. The cleaning action is synchronized with the buffering action, protecting the laser detection head 5 while completing the cleaning process without additional detection time or impacting efficiency. Furthermore, even when the buffering action is not triggered, the second micro-electric actuator 63 can drive the sliding plate 641 to compress the telescopic airbag 643, actively generating airflow to clean the emitting end of the laser detection head 5.

[0054] See Figures 6-10 The airflow control mechanism 647 includes a telescopic hose 6472 and a cleaning nozzle 6473. The telescopic hose 6472 is sleeved on the laser detection head 5, with one end connected to the laser detection head 5 and the other end connected to the ceramic detection rod 62. The end of the laser detection head 5 is provided with multiple cleaning nozzles 6473, all of which are in communication with the inside of the telescopic hose 6472. The ceramic detection rod 62 is provided with an air guide hole 6471, and the cavity is in communication with the inside of the telescopic hose 6472 through the air guide hole 6471.

[0055] It should be noted that when the laser detection head 5 slides along the ceramic detection rod 62, the telescopic hose 6472 expands and contracts with the movement of the laser detection head 5, always maintaining a sealed connection. When the gas inside the sealed cavity of the buffer mechanism 64 is pressurized, the high-pressure gas enters the interior of the telescopic hose 6472 through the air guide hole 6471, and then is evenly blown onto the emitting end of the laser detection head 5 through multiple cleaning nozzles 6473, thoroughly removing impurities from the emitting end.

[0056] The flexible hose 6472 has excellent elasticity and sealing properties, adapting to the axial sliding motion of the laser detection head 5, ensuring the airflow channel remains sealed at all times, preventing gas leakage from affecting the cleaning effect, and preventing impurities from entering the airflow channel. Multiple cleaning nozzles 6473 are evenly distributed at the end of the laser detection head 5, forming an all-around cleaning airflow to ensure that every area of ​​the laser emitting end is cleaned, resulting in a more thorough cleaning effect.

[0057] See Figures 1-3 and Figure 5 A detection path control mechanism 7 is provided on the lower mold base 1. The detection path control mechanism 7 includes a controller 71. The controller 71 is installed on the lower mold base 1, and its signal interface is connected to the motor 413, the angle displacement sensor 414, the first micro electric actuator 425, the second micro electric actuator 63, and the laser detection head 5 through signal control. It can be understood that when the mold is working, the controller 71 calls the pre-programmed path of the corresponding stamping part, sends control commands to each execution component, and receives feedback signals to realize the automated control of the detection process. It should be noted that the pre-programmed path is a set of detection path parameters that are preset and stored in the PLC in advance through a professional process for the detection requirements of specific complex stamping parts. The complete logic of its acquisition and calling is as follows:

[0058] Method for obtaining the detection path:

[0059] S101. Pre-generation process of pre-programmed paths: For each complex stamping part to be inspected, the three-dimensional model of the stamping part is first imported through 3D modeling software. Combined with the inspection requirements, such as the blind spot locations to be inspected, dimensional accuracy requirements and surface defect types, an inspection path covering all dimensions is planned. It is understood that the 3D modeling software is existing technology and will not be described in detail.

[0060] S102. Determine the rotation angle sequence of the detection arm 412 according to the detection path. For example, for a deep cavity component, the detection arm 412 needs to rotate 30°, 60° and 90° in sequence to cover the inner wall of the cavity.

[0061] S103. Set the extension and retraction stroke parameters of the laser detection head 5 according to the different positions of the inner wall of the stamping part cavity;

[0062] S104. Define the dwell time of the laser detection head 5 to ensure stable detection data.

[0063] S105, Parametric Programming Conversion: The planned detection path, including the rotation angle, the travel distance of the laser detection head 5, and the dwell time of the laser detection head 5, is converted into a program that can be recognized by the PLC using PLC-specific programming software. Each detection path corresponds to a set of independent program modules and is assigned a unique path number to achieve the acquisition of the detection path. It is understood that the PLC-specific programming software is existing technology and will not be described in detail.

[0064] Detection path calling method:

[0065] S201, Trigger signal source: When the mold is working, the PLC receives the stamping process signal, which is triggered by the mold's limit switch or proximity sensor;

[0066] S202, Path matching mechanism: After receiving the signal, the PLC calls the corresponding pre-programmed path according to the preset association rules between process signals and path numbers.

[0067] S203 Dynamic Adaptation Support: If a new model of complex stamping part is added, the path can be replanned and the program rewritten through programming software, and then downloaded to the PLC again, thus realizing the detection path call.

[0068] It should be noted that the signal input interface of the controller 71 is connected to the angle displacement sensor 414 to receive the rotation angle signal fed back by the angle displacement sensor 414; the signal output interface of the controller 71 is connected to the motor 413, the first micro electric actuator 425, the second micro electric actuator 63 and the laser detection head 5 respectively to send control commands. Before the mold performs the stamping operation, the preset detection path parameters are input into the controller 71 according to the structural parameters of the stamped part to be detected. The controller 71 stores the detection path program corresponding to different stamped parts. After the stamping operation is completed, the controller 71 receives the clamping signal from the positioning mechanism 3, starts the detection program, and sends control commands to the motor 413, the first micro electric actuator 425 and the second micro electric actuator 63 in sequence according to the preset path, driving the laser detection head 5 to complete rotation, bending and extension actions, etc. At the same time, it receives the feedback signal from the angle displacement sensor 414 and adjusts the action parameters of each component in real time to ensure that the laser detection head 5 moves strictly according to the preset path. The laser detection head 5 feeds back the detection data to the controller 71 in real time, and the controller 71 processes and judges the data.

[0069] As the core control unit of the entire inspection system, controller 71 enables the coordinated and automated operation of all inspection components without manual intervention, significantly improving inspection efficiency and meeting the automation requirements of intelligent manufacturing production lines. The preset inspection path storage function allows the mold to quickly adapt to different types of complex stamping parts; inspection can be completed simply by calling the corresponding path program, without the need for mechanism readjustment, thus improving the mold's versatility and production flexibility. Closed-loop control is formed by receiving feedback signals from angle displacement sensor 414, ensuring the motion accuracy of laser inspection head 5, making the inspection data more accurate and reliable, and effectively avoiding errors that may occur during manual operation.

[0070] Example 2: The technical solution of this example differs from that of Example 1 in that: (See below) Figures 1-2 The lower die base 1 is provided with a positioning mechanism 3, which includes a mounting frame 31, a cylinder 32 and a support frame 33. The mounting frame 31 is fixed above the lower die base 1, the cylinder 32 is mounted on the mounting frame 31, and a pressure plate is fixed to the output end of the cylinder 32. The support frame 33 is fixed to one side of the pressure block 2. The stamped workpiece is allowed to be clamped between the pressure plate and the support frame 33. The support frame 33 is provided with a misalignment groove, which allows the laser detection head 5 to be inserted into the misalignment groove to detect the inner cavity of the stamped workpiece.

[0071] It should be noted that after the stamping operation is completed, the stamped part is pushed onto the support frame 33. At this time, the cylinder 32 is activated, driving the pressure plate to move downwards, pressing the stamped part between the pressure plate and the support frame 33, thus fixing the stamped part during the inspection process. Then, the multi-degree-of-freedom inspection mechanism 4 drives the laser inspection head 5 to move. The laser inspection head 5 can pass through the misalignment groove on the support frame 33, penetrate deep into the inner cavity of the stamped part or approach the irregular curved surface, and inspect the internal parameters of the stamped part. After the inspection is completed, the cylinder 32 drives the pressure plate to move upwards, releasing the clamp on the stamped part, so that the stamped part can be released.

[0072] The positioning mechanism 3, driven by the cylinder 32, engages with the pressure plate and support frame 33 to quickly and securely fix the stamped part, preventing displacement or shaking during inspection and ensuring the accuracy of the inspection data. The actions of the positioning mechanism 3 are synchronized with those of the inspection mechanism. The clamping and fixing action is performed promptly after stamping, and the clamping release action is performed after inspection and before demolding. This does not affect the stamping efficiency or demolding effect of the mold, enabling stable full-dimensional self-inspection of complex stamped parts. The overall function of the mold is further improved, fully meeting the needs of intelligent manufacturing for real-time quality control during the production of complex parts.

[0073] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 self-detecting stamping die with easy demolding, comprising a lower die base (1) and a pressure block (2) disposed on the lower die base (1), characterized in that: The lower mold base (1) is provided with a multi-degree-of-freedom detection mechanism (4); the multi-degree-of-freedom detection mechanism (4) is provided with a laser detection head (5); an adaptive detection probe mechanism (6) is provided between the multi-degree-of-freedom detection mechanism (4) and the laser detection head (5), and is used to adjust the position of the laser detection head (5) along the axial direction of the laser detection head (5); the multi-degree-of-freedom detection mechanism (4) includes: The first angle adjustment mechanism (41) is disposed on the side wall of the lower mold base (1). The first angle adjustment mechanism (41) includes a rotating rod (411). The rotating rod (411) is rotatably connected to the lower mold base (1) through a bearing around its axis. A detection arm (412) is fixed on the rotating rod (411) perpendicular to its axis. The laser detection head (5) is coaxially mounted on the detection arm (412). The first angle adjustment mechanism (41) is used to drive the laser detection head (5) to rotate around the axis of the rotating rod (411). The second angle adjustment mechanism (42) includes a first micro electric actuator (425), a connecting rope (426), and multiple connecting rods (421); the first micro electric actuator (425) is mounted on the detection arm (412), one end of the connecting rope (426) is fixed to the output end of the first micro electric actuator (425), and the other end of the connecting rope (426) is connected to the laser detection head (5); when the first micro electric actuator (425) extends, it allows the multiple connecting rods (421) to be in an arc shape; One of the connecting rods (421) is coaxially connected to the detection arm (412), and the other connecting rod (421) away from the connecting rod (421) is coaxially connected to the laser detection head (5); adjacent connecting rods (421) are hinged together by a hinge block (422), and a first compression spring (423) is provided between adjacent connecting rods (421); when the first compression spring (423) is unrestrained, the first compression spring (423) is used to drive multiple connecting rods (421) into an arc state; Telescopic protective tubes (424) are provided between adjacent connecting rods (421) to cover the hinge block (422) and the first compression spring (423). The adaptive detection probe mechanism (6) includes a threaded connector (61), a ceramic detection rod (62), and a second micro electric actuator (63); the ceramic detection rod (62) is coaxially connected to the detection arm (412) through the threaded connector (61), the laser detection head (5) is coaxially slidably connected to the ceramic detection rod (62) along its length direction, the second micro electric actuator (63) is installed on the ceramic detection rod (62), and the output shaft of the second micro electric actuator (63) is coaxially connected to the laser detection head (5); A buffer mechanism (64) is provided between the output shaft of the second micro electric actuator (63) and the laser detection head (5); when the laser detection head (5) is impacted, the buffer mechanism (64) is used to provide buffering force for the movement of the laser detection head (5); The buffer mechanism (64) includes a sliding plate (641), a positioning sleeve (642), a telescopic airbag (643), a sliding shaft (644), and a second compression spring (645). The sliding plate (641) is coaxially fixed to the output end of the second miniature electric actuator (63), the positioning sleeve (642) is coaxially fixed inside the ceramic detection rod (62), and the telescopic airbag (643) is disposed between the sliding plate (641) and the positioning sleeve (642). The sliding plate (641), the positioning sleeve (642), and the telescopic airbag (643) form a tight enclosure. The cavity is sealed; the sliding shaft (644) is coaxially inserted into the positioning sleeve (642), and one end of the sliding shaft (644) is inserted into the cavity, and the other end of the sliding shaft (644) is coaxially connected to the laser detection head (5). The second compression spring (645) is set in the cavity, and one end of the second compression spring (645) is connected to the slide plate (641), and the other end of the second compression spring (645) is connected to the sliding shaft (644). A vent hole (646) communicating with the cavity is opened on the side wall of the ceramic detection rod (62).

2. The easy-to-demold self-inspection stamping die according to claim 1, characterized in that: The first angle adjustment mechanism (41) further includes a motor (413), an angle displacement sensor (414), and an elastic connecting sleeve (415); the motor (413) is installed on the lower mold base (1), and the output end of the motor (413) is coaxially connected to the rotating rod (411); the angle displacement sensor (414) is installed on the housing of the motor (413), and the detection end of the angle displacement sensor (414) is coaxially connected to the tail end rotating shaft of the motor (413) through the elastic connecting sleeve (415).

3. The easy-to-demold self-inspection stamping die according to claim 1, characterized in that: The buffer mechanism (64) further includes an airflow control mechanism (647); the airflow control mechanism (647) is disposed between the laser detection head (5) and the ceramic detection rod (62); when the laser detection head (5) is impacted, the airflow control mechanism (647) generates an airflow that blows towards the laser emitting end of the laser detection head (5).

4. The easy-to-demold self-inspection stamping die according to claim 3, characterized in that: The airflow control mechanism (647) includes a telescopic hose (6472) and a cleaning nozzle (6473); the telescopic hose (6472) is sleeved on the laser detection head (5), one end of the telescopic hose (6472) is connected to the laser detection head (5), and the other end of the telescopic hose (6472) is connected to the ceramic detection rod (62); the end of the laser detection head (5) is provided with a plurality of cleaning nozzles (6473), and the plurality of cleaning nozzles (6473) are all connected to the inside of the telescopic hose (6472); the ceramic detection rod (62) is provided with an air guide hole (6471), and the cavity is connected to the inside of the telescopic hose (6472) through the air guide hole (6471).

5. The easy-to-demold self-inspection stamping die according to claim 1, characterized in that: The lower mold base (1) is provided with a detection path control mechanism (7), which includes a controller (71). The controller (71) is installed on the lower mold base (1), and the signal interface of the controller (71) is connected to the motor (413), the angle displacement sensor (414), the first micro electric push rod (425), the second micro electric push rod (63), and the laser detection head (5) through signal control.

6. The easy-to-demold self-inspection stamping die according to claim 1, characterized in that: The lower die base (1) is provided with a positioning mechanism (3), which includes a mounting frame (31), a cylinder (32) and a support frame (33). The mounting frame (31) is fixed above the lower die base (1), the cylinder (32) is mounted on the mounting frame (31), and the output end of the cylinder (32) is fixed with a pressure plate. The support frame (33) is fixed on one side of the pressure block (2). The stamped workpiece is allowed to be clamped between the pressure plate and the support frame (33). The support frame (33) is provided with a misalignment groove, which allows the laser detection head (5) to be inserted into the misalignment groove to detect the inner cavity of the stamped workpiece.

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