A facial tissue foreign matter detection device

Abstract

The application relates to a facial tissue foreign matter detection device and relates to the technical field of facial tissue production. The device comprises a bottom plate, a connecting frame one, a first detection mechanism, a placing mechanism and a second detection mechanism. The application has the effect of improving foreign matter detection precision. The first detection mechanism comprises a fixed guide plate, a first adjusting mechanism, a second adjusting mechanism and a detection module one and other components. The edge of the facial tissue is specially detected by the detection module one, so that a detection blind area is avoided, and the horizontal height position of the detection module one is adjusted by the first adjusting mechanism and the second adjusting mechanism, so as to adapt to facial tissues with different sizes and thicknesses. The second detection mechanism comprises a fixed cylinder, a motor two, a linkage mechanism, a motor three and other components. Through mutual cooperation, the detection range of the detection module two can be expanded, illumination compensation is realized through an illumination module, no dead angle detection of the facial tissue can be realized, the adjustment is flexible, and the detection precision and efficiency are high.

Description

Technical Field

[0001] This application relates to the technical field of facial tissue production, and in particular to a foreign object detection device for facial tissues. Background Technology

[0002] During the production process of facial tissues, foreign objects such as black spots, fiber clumps, and oil stains may be mixed in due to factors such as raw materials, equipment, or environment. It is necessary to scan and detect the surface of the facial tissues in order to identify and remove unqualified products.

[0003] Existing foreign object detection devices mostly adopt a fixed position detection mode, which has the disadvantages of single detection angle and poor adjustment flexibility. They are difficult to adapt to the detection needs of different sizes of facial tissues and are prone to detection blind spots. The detection rate of foreign objects at the edge of facial tissues is low. At the same time, due to the lack of a supplementary lighting structure, foreign objects in the shadow area may not be clearly distinguished, resulting in a decrease in detection accuracy. Summary of the Invention

[0004] The purpose of this application is to provide a foreign object detection device for facial tissues to solve the problems in the prior art.

[0005] The foreign object detection device for facial tissue provided in this application adopts the following technical solution: it includes a base plate, a set of connecting frames at the top of the base plate, a set of first detection mechanisms at the left end of the bottom surface of the connecting frames, and a placement mechanism at the right end of the first detection mechanism. A second detection mechanism is provided at the top of the placement mechanism. The first detection mechanism includes a fixed guide plate, a movable slide plate, a connecting seat, a first adjustment mechanism, a second adjustment mechanism, and a detection module one. A set of movable slide plates is slidably connected to the left end of the inner bottom surface of the connecting frame one through the fixed guide plate. A set of connecting seats is rotatably connected to the top surface of the movable slide plate. A set of first adjustment mechanisms is provided at the top left side of the connecting seat. A set of second adjustment mechanisms is connected to the top of the connecting seat. A set of detection modules one is provided at the right end of the second adjustment mechanism.

[0006] By adopting the above technical solution, the first testing mechanism inspects the outer edge of the facial tissue, and the second testing mechanism inspects the top surface of the facial tissue. The first testing mechanism can be flexibly positioned in height and position through the first adjustment mechanism and the second adjustment mechanism to adapt to facial tissues of different sizes, which can effectively improve the flexibility and applicability of the testing.

[0007] Preferably, a set of guide plates is provided at the right end of the top surface of the connecting seat, and a set of guide rods is provided at the right end of the guide plates.

[0008] By adopting the above technical solution, the guide plate and guide rod can be linked with the placement mechanism, which can ensure the detection accuracy of the first detection module and prevent the first detection module from derailing.

[0009] Preferably, the first adjustment mechanism includes a second connecting frame, a first screw, a first force-applying ring, and a first moving block. A second connecting frame is provided at the top left side of the connecting seat. A first screw is connected inside the second connecting frame. The left end of the first screw extends through to the left end of the second connecting frame and is connected to a first force-applying ring. A first moving block is provided outside the first screw. The top right side of the first moving block is connected to the second adjustment mechanism.

[0010] By adopting the above technical solution, the rotating force ring can drive the moving block to move horizontally along the screw, thereby driving the second adjustment mechanism to move as a whole. This enables the second adjustment mechanism and the detection module to adjust horizontally, resulting in high adjustment stability and resistance to deviation due to vibration.

[0011] Preferably, the second adjustment mechanism includes a connecting frame three, a screw two, a force-applying ring two, and a moving block two. The bottom left end of the connecting frame three is connected to the top right end of the moving block one. A set of screw two is provided inside the connecting frame three. The top end of the screw two extends through to the top end of the connecting frame three and is connected to a set of force-applying ring two. A set of moving blocks two is provided outside the screw two. The right side of the moving block two is connected to the detection module one.

[0012] By adopting the above technical solution, the rotating force ring II can cause the moving block II to drive the detection module I to move up and down, and cooperate with the first adjustment mechanism to form an orthogonal two-dimensional adjustment capability. This can accurately adjust the horizontal and vertical distance between the detection module I and the tissue paper being inspected, adapting to tissue paper of different thicknesses or stacking heights, and improving the adaptability of the inspection.

[0013] Preferably, the placement mechanism includes a motor, a synchronous shaft, a guide frame, and a placement frame. A set of motors is provided at the middle of the inner bottom of the connecting frame. The top of the drive shaft of the motor extends through to the middle of the bottom surface of the connecting frame and is connected to a set of synchronous shafts. A set of guide frames is connected to the top of the synchronous shafts, and a set of placement frames is provided on the top surface of the guide frames.

[0014] By adopting the above technical solution, the motor can drive the guide frame and the placement frame to rotate through the synchronous shaft, thereby realizing the automatic rotation of the tissue to be tested. This allows the first and second detection mechanisms to scan foreign objects from different directions, avoiding blind spots and improving the detection rate.

[0015] Preferably, the second detection mechanism includes a fixed cylinder, a second motor, a first connecting arm, a second connecting arm, a linkage mechanism, a third motor, and a first bevel gear. A set of fixed cylinders is provided at the middle of the inner top surface of the first connecting frame. A set of second motors is provided at the front top and left top of the fixed cylinders. A set of first connecting arms is connected to the top of the drive shafts of the two sets of second motors. A set of second connecting arms is provided at the other end of the first connecting arm. The other ends of the two sets of second connecting arms extend through the fixed cylinder and are connected to the linkage mechanism. A set of third motors is provided at the rear top of the fixed cylinder. The front end of the drive shaft of the third motor extends through the fixed cylinder and is connected to a set of first bevel gears.

[0016] By adopting the above technical solution, the two sets of motors can simultaneously drive the connecting arm 1 and connecting arm 2 at the front and left ends to swing, thereby driving the linkage mechanism to move. Motor 3 can drive the linkage mechanism to rotate through bevel gear 1, which can improve the flexibility of the second detection mechanism and thus significantly enhance the detection efficiency of facial tissues.

[0017] Preferably, the linkage mechanism includes a second bevel gear, a connecting cylinder, a rotating disk, a rotating mechanism, and a swing arm. A set of second bevel gears is provided at the top of the fixed cylinder, and a set of rotating disks is connected to the bottom of the second bevel gears through the connecting cylinder. A rotating mechanism is provided at the bottom of the rotating disks. A set of swing arms is provided inside the connecting cylinder. The top of the swing arm extends to the top of the second bevel gear and connects to the two sets of second connecting arms. The bottom of the swing arm extends through to the bottom of the rotating mechanism and connects to a set of second detection modules.

[0018] By adopting the above technical solution, bevel gear two meshes with bevel gear one, which can drive the connecting cylinder, rotating disk and rotating mechanism to rotate. At the same time, the swing arm can swing independently under the drive of the two sets of connecting arms two, without interfering with each other, which can effectively expand the scanning coverage area of ​​detection module two and effectively improve the detection effect of foreign objects.

[0019] Preferably, the rotating mechanism includes a connecting crank arm, a connecting plate, a guide groove, a connecting rod, a connecting turntable, and a lighting module. The bottom surface of the turntable is connected to a connecting plate via two sets of connecting crank arms. A guide groove is provided in the middle of the connecting plate. A set of connecting rods is provided at both ends of the guide groove. The bottom ends of the two sets of connecting rods are connected to a connecting turntable. At least two sets of lighting modules are provided at equal intervals on the bottom surface of the connecting turntable.

[0020] By adopting the above technical solution, when the rotary disk rotates, the connecting plate and the connecting turntable can be driven to rotate synchronously through the connecting crank arm, and the lighting module can rotate synchronously with the connecting turntable, providing uniform and multi-angle supplementary lighting for the detection range, significantly enhancing the contrast between foreign objects and the background, which is conducive to improving detection accuracy.

[0021] Preferably, the second bevel gear has a ring-shaped structure with its tooth surface facing upwards, and meshes with the first bevel gear.

[0022] By adopting the above technical solution, the two centers of the ring-shaped bevel gear have through holes, allowing the swing arm to pass through the middle without interference, thus ensuring the independence of rotation and swinging movements.

[0023] Preferably, the top, middle and bottom ends of the swing arm are connected to the second connecting arm, the inner end of the connecting cylinder and the middle end of the connecting turntable via spherical bearings.

[0024] By adopting the above technical solutions, the joint bearing can adapt to the deflection and tilt of the swing arm in multiple directions, reduce friction and jamming in the kinematic pair, make the swing transmission smoother and more sensitive, and at the same time compensate for manufacturing and assembly errors, extend the service life of the mechanism, and ensure that the second detection module can accurately follow the swing command.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. This application uses a first detection mechanism located at the top left end of the bottom horizontal plate of a connecting frame. The first detection mechanism includes components such as a fixed guide plate, a movable slide plate, a connecting seat, a first adjustment mechanism, a second adjustment mechanism, and a detection module. The first and second adjustment mechanisms can flexibly adjust the horizontal height of the detection module. Compared with the shortcomings of the fixed position in the prior art, which cannot be flexibly adjusted, this application can accurately adapt to facial tissues of different sizes and thicknesses, effectively improving the flexibility and applicability of detection. It has high adjustment accuracy, good self-locking, and is not prone to positional displacement due to equipment vibration. 2. This application uses a placement mechanism located at the right end of the first detection mechanism. The placement mechanism includes components such as a motor, a synchronous shaft, a guide frame, and a placement frame. The motor drives the guide frame and the placement frame to rotate synchronously through the synchronous shaft. At the same time, the outer edge of the guide frame can be engaged between the guide plate and the guide rod to achieve linkage guidance. It can achieve circumferential all-round detection of facial tissues without manual intervention, which greatly improves detection efficiency and ensures the relative position of the detection module and the outer edge of the facial tissue is stable, thus avoiding detection derailment. 3. This application uses a second detection mechanism set at the top of the placement mechanism. The second detection mechanism includes components such as a fixed cylinder, a second motor, a first connecting arm, a second connecting arm, a linkage mechanism, a third motor, and a first bevel gear. The two sets of second motors drive the swing arm to swing, expanding the detection range of the second detection module and improving the detection effect on the surface of the facial tissue. At the same time, the third motor can drive the rotating disk and the rotating mechanism to rotate through the meshing of the first and second bevel gears. Since the second bevel gear, the connecting cylinder, and the rotating disk all have openings for the corresponding swing arm at the middle, interference with the swing arm can be effectively prevented, and the flexibility and smoothness of the component movement can be effectively improved. 4. This application utilizes a rotating mechanism located at the bottom of the rotating disk. The rotating mechanism includes components such as a connecting crank arm, a connecting plate, a guide groove, a connecting rod, a connecting turntable, and an illumination module. When the rotating disk rotates, it can drive the connecting turntable and the illumination module to rotate synchronously. Compared with the problems of uneven illumination or fixed supplementary lighting angle in the prior art, the illumination module of this application can rotate flexibly around the detection module, providing uniform and sufficient multi-angle illumination for the detection area, enhancing the contrast between foreign objects and the tissue paper background, and further improving the clarity and detection accuracy of the detection image. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the connection structure between the first testing institution and the placement institution in this application; Figure 3 This is a schematic diagram of the structure of the first testing institution in this application; Figure 4 This is a schematic diagram of the structure of the first regulating mechanism and the second regulating mechanism of this application; Figure 5 This is a front view structural diagram of the placement mechanism of this application; Figure 6 This is a partial structural diagram of the bottom surface of the guide frame in this application; Figure 7 This is a schematic diagram of the structure of the second testing institution in this application; Figure 8 This is a schematic diagram of the linkage mechanism structure of this application; Figure 9 This is a schematic diagram of the rotating mechanism structure of this application; Figure 10 This is a schematic diagram of the connection structure of the connecting turntable in this application; Figure 11 This is a bottom view of the connecting plate structure of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Connecting frame one; 3. First detection mechanism; 4. Placement mechanism; 5. Second detection mechanism; 31. Fixed guide plate; 32. Movable sliding plate; 33. Connecting seat; 34. First adjustment mechanism; 35. Second adjustment mechanism; 36. Detection module one; 331. Guide plate; 332. Guide rod; 341. Connecting frame two; 342. Screw one; 343. Force ring one; 344. Moving block one; 351. Connecting frame three; 352. Screw two; 353. Force ring two; 354. Moving block two; 41. 42. Motor 1; 43. Synchronous Shaft; 44. Guide Frame; 45. Placement Frame; 56. Fixed Cylinder; 57. Motor 2; 58. Connecting Arm 1; 59. Connecting Arm 2; 50. Linkage Mechanism; 51. Motor 3; 52. Bevel Gear 1; 53. Bevel Gear 2; 54. Connecting Cylinder; 555. Rotary Disk; 556. Rotating Mechanism; 57. Swing Arm; 58. Connecting Crank Arm; 59. Connecting Plate; 50. Guide Groove; 51. Connecting Rod; 52. Connecting Turntable; 53. Lighting Module; 54. Detection Module 2. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 - Appendix Figure 11 This application will be described in further detail below.

[0029] A foreign object detection device for facial tissues, referring to Figures 1-3 The device includes a base plate 1, with a connecting frame 2 mounted on the top of the base plate 1. The connecting frame 2 has an inverted "U" shape and is hollow inside. A first detection mechanism 3 is located on the top left end of the bottom horizontal plate of the connecting frame 2. A placement mechanism 4 is located on the right end of the first detection mechanism 3. A second detection mechanism 5 is located on the top of the placement mechanism 4. The first detection mechanism 3 includes a fixed guide plate 31, a movable slide plate 32, a connecting seat 33, a first adjustment mechanism 34, a second adjustment mechanism 35, and a detection module 36. A movable slide plate 32 is slidably connected to the top left end of the bottom horizontal plate of the connecting frame 2 through the fixed guide plate 31. A set of inverted "T" shaped connecting seats 33 is rotatably connected to the top surface of the movable slide plate 32. A first adjustment mechanism 34 is located on the top left side of the connecting seat 33. A second adjustment mechanism 35 is connected to the top of the connecting seat 33. A detection module 36 is located on the right side of the second adjustment mechanism 35. The position and height of the detection module 36 can be adjusted by the first adjustment mechanism 34 and the second adjustment mechanism 35 to improve the detection efficiency of facial tissues.

[0030] Specifically, the first testing mechanism 3 inspects the outer edge of the facial tissue, and the second testing mechanism 5 inspects the top surface of the facial tissue. The first testing mechanism 3 can be flexibly positioned in height and position through the first adjustment mechanism 34 and the second adjustment mechanism 35 to adapt to facial tissues of different sizes, which can effectively improve the flexibility and applicability of the inspection.

[0031] A foreign object detection device for facial tissues, referring to Figure 3 and Figure 6 A set of guide plates 331 is provided on the right end of the top surface of the horizontal plate of the connecting seat 33, and a set of guide rods 332 is provided on the right end of the guide plates 331. The outer edge of the guide frame 43 can be inserted between the guide plates 331 and the guide rods 332. When the guide frame 43 rotates, its bottom outer edge slides between the guide plates 331 and the guide rods 332. Through the left and right sliding of the movable slide plate 32 and the rotation of the connecting seat 33, a stable connection between the connecting seat 33 and the guide frame 43 is achieved, which is beneficial for the detection module 36 to detect the outer edge of the tissue paper placed in the frame 44.

[0032] Specifically, the guide plate 331 and guide rod 332 can be linked with the placement mechanism 4 to ensure the detection accuracy of the detection module 36 and prevent the detection module 36 from derailing.

[0033] A foreign object detection device for facial tissues, referring to Figure 4 The first adjustment mechanism 34 includes a second connecting frame 341, a first screw 342, a first force ring 343, and a first moving block 344. A set of "U"-shaped second connecting frames 341 is installed on the top left side of the vertical plate of the connecting seat 33. A set of first screws 342 is installed inside the second connecting frame 341. The left end of the first screw 342 extends through to the left end of the second connecting frame 341 and is connected to a set of first force rings 343. A set of first moving blocks 344 is threadedly connected to the outside of the first screw 342. By rotating the first force ring 343, the first screw 342 can be driven to rotate synchronously, which in turn can drive the first moving block 344 to move along the first screw 342. The top right side of the first moving block 344 is connected to the second adjustment mechanism 35, which can drive the second adjustment mechanism 35 to move synchronously left and right.

[0034] Specifically, the rotating force ring 343 can drive the moving block 344 to move horizontally along the screw 342, thereby driving the second adjustment mechanism 35 to move as a whole. This enables the second adjustment mechanism 35 and the detection module 36 to be adjusted horizontally, with high adjustment stability and less prone to deviation due to vibration.

[0035] A foreign object detection device for facial tissues, referring to Figures 4-5The second adjusting mechanism 35 includes a connecting frame 351, a screw 352, a force-applying ring 353, and a moving block 354. The bottom left side of the connecting frame 351 is connected to the top right side of the moving block 344, allowing it to move synchronously with the moving block 344. A set of triangular support plates is located at the middle left side of the connecting frame 351, with the bottom surface of the support plates slidably connected to the top surface of the connecting frame 341. This effectively improves the stability of the connecting frame 351 during movement. A set of screws 352 is installed inside 351. The top end of screws 352 extends through to the top end of connecting frame 351 and is connected to a set of force-applying rings 353. A set of moving blocks 354 is threadedly connected to the outside of screws 352. The right side of moving blocks 354 is connected to detection module 36. By rotating the force-applying rings 353, the moving blocks 354 can be moved up and down along screws 352, thereby adjusting the detection height of detection module 36.

[0036] Specifically, the rotating force-applying ring 353 can cause the moving block 354 to drive the detection module 36 to move up and down, and cooperate with the first adjustment mechanism 34 to form an orthogonal two-dimensional adjustment capability. This can precisely adjust the horizontal and vertical distance between the detection module 36 and the tissue being inspected, adapting to tissues of different thicknesses or stacking heights, and improving the adaptability of the inspection.

[0037] A foreign object detection device for facial tissues, referring to Figures 5-6 The placement mechanism 4 includes a motor 41, a synchronous shaft 42, a guide frame 43, and a placement frame 44. A set of motors 41 is installed at the middle of the inner bottom of the bottom horizontal plate of the connecting frame 2. The top end of the drive shaft of the motor 41 extends through to the middle of the top surface of the bottom horizontal plate of the connecting frame 2 and is connected to a set of synchronous shafts 42. A set of guide frames 43 is fixedly connected to the top end of the synchronous shaft 42. A set of placement frames 44 is fixedly connected to the top surface of the guide frame 43. The motor 41 can drive the guide frame 43 and the placement frame 44 to rotate through the synchronous shaft 42.

[0038] Specifically, motor 41 can drive guide frame 43 and placement frame 44 to rotate via synchronous shaft 42, thereby realizing automatic rotation of the tissue to be tested, enabling the first detection mechanism 3 and the second detection mechanism 5 to scan foreign objects from different directions, avoiding blind spots and improving the detection rate.

[0039] A foreign object detection device for facial tissues, referring to Figure 1 , Figure 7 and Figure 8The second detection mechanism 5 includes a fixed cylinder 51, a second motor 52, a first connecting arm 53, a second connecting arm 54, a linkage mechanism 55, a third motor 56, and a first bevel gear 57. A set of fixed cylinders 51 is fixedly connected to the bottom surface of the top horizontal plate of the connecting frame 2. A set of second motors 52 is installed at the front top and left top of the fixed cylinder 51. A set of first connecting arms 53 is connected to the top of the drive shaft of each set of second motors 52. A set of second connecting arms 54 is installed at the other end of each set of first connecting arms 53. The other ends of each set of second connecting arms 54 extend through into the fixed cylinder 51 and are connected to the linkage mechanism 55. The two sets of second motors 52 can drive the linkage mechanism 55 to move through the first connecting arms 53 and the second connecting arms 54 to expand the detection range of the face tissue. A set of third motors 56 is installed at the rear top of the fixed cylinder 51. The front end of the drive shaft of the third motor 56 extends through into the fixed cylinder 51 and is connected to a set of first bevel gears 57. The first bevel gears 57 can drive the linkage mechanism 55 to rotate, thereby enhancing the detection efficiency of the face tissue.

[0040] Specifically, the two sets of motors 52 can simultaneously drive the connecting arms 53 and 54 at the front and left ends to swing, thereby driving the linkage mechanism 55 to move. Motor 56 can drive the linkage mechanism 55 to rotate through bevel gear 57, which can improve the flexibility of the second detection mechanism 5 and thus significantly enhance the detection efficiency of facial tissues.

[0041] A foreign object detection device for facial tissues, referring to Figures 8-9The linkage mechanism 55 includes a second bevel gear 551, a connecting cylinder 552, a rotating disk 553, a rotating mechanism 554, and a swing arm 555. A set of second bevel gears 551 is rotatably connected to the top of the fixed cylinder 51. The second bevel gear 551 has a ring-shaped structure with its teeth facing upwards and meshes with a first bevel gear 57. It can rotate under the drive of the first bevel gear 57 to achieve circumferential adjustment of the rotating mechanism 554. The maximum single-turn rotation angle of the linkage mechanism 55 does not exceed 360° to avoid interference damage to the circuit. The ring-shaped second bevel gear 551 has a through hole in its center, allowing the swing arm 555 to pass through without interference, ensuring the independence of the rotation and swinging actions. A set of rotating disks 553 is connected to the bottom of the second bevel gear 551 via the connecting cylinder 552. The bottom of the disc 553 is equipped with a rotating mechanism 554, which can drive the rotating mechanism 554 to move synchronously. The inner end of the connecting cylinder 552 is connected to a set of swing arms 555 through a joint shaft. The top of the swing arm 555 extends to the top of the bevel gear 551 and is connected to the two sets of connecting arms 54 through a joint bearing. The bottom of the swing arm 555 extends through to the bottom of the rotating mechanism 554 and is connected to a set of detection modules 5551. The detection module 5551 is used to detect foreign objects in the middle of the top surface of the tissue paper. The joint bearing can adapt to the deflection and tilt of the swing arm 555 in multiple directions, reduce friction and jamming in the moving pair, make the swing transmission smoother and more sensitive, and at the same time compensate for manufacturing and assembly errors, extend the service life of the mechanism, and ensure that the detection module 5551 can accurately follow the swing command.

[0042] Specifically, bevel gear 551 meshes with bevel gear 57, which can drive the connecting cylinder 552, the rotating disk 553 and the rotating mechanism 554 to rotate. At the same time, the swing arm 555 can swing independently under the drive of the two sets of connecting arms 54 without interfering with each other, which can effectively expand the scanning coverage area of ​​the detection module 5551 and effectively improve the detection effect of foreign objects.

[0043] A foreign object detection device for facial tissues, referring to Figures 9-11The rotating mechanism 554 includes a connecting crank arm 5541, a connecting plate 5542, a guide groove 5543, a connecting rod 5544, a connecting turntable 5545, and an illumination module 5546. The bottom surface of the turntable 553 is connected to a connecting plate 5542 via two sets of connecting crank arms 5541. A guide groove 5543 is provided in the middle of the connecting plate 5542. An expansion groove is provided in the middle of the guide groove 5543 to accommodate the movement of the swing arm 555. A set of connecting rods 5544 is installed at both ends of the guide groove 5543. The bottom ends of the two sets of connecting rods 5544 are connected to a connecting turntable 5545. The bottom end of the swing arm 555 is connected to the middle end of the connecting turntable 5545 via the expansion groove in the middle of the guide groove 5543 and a joint bearing. Four illumination modules 5546 are provided at equal intervals on the outer end of the bottom surface of the connecting turntable 5545. The illumination modules 5546 can provide supplementary lighting to the detection area of ​​the facial tissue to improve detection accuracy.

[0044] Specifically, when the rotating disk 553 rotates, the connecting plate 5542 and the connecting turntable 5545 can be driven to rotate synchronously through the connecting crank arm 5541, and the lighting module 5546 can rotate synchronously with the connecting turntable 5545, providing uniform and multi-angle supplementary lighting for the detection range, significantly enhancing the contrast between foreign objects and the background, which is conducive to improving detection accuracy.

[0045] This application provides a foreign object detection device for facial tissues. A first detection mechanism allows for flexible adjustment of the horizontal and vertical dimensions of the detection module, precisely adapting to facial tissues of different sizes and thicknesses. The adjustment is highly accurate and self-locking, preventing displacement due to vibration. A placement mechanism uses a motor to rotate the facial tissue circumferentially, and a guide plate and guide rod provide coordinated guidance, enabling omnidirectional detection without manual intervention and preventing derailment. A second detection mechanism uses motors two and three to drive the swing arm and rotating disk, respectively. Each component has a central opening to prevent interference, significantly improving flexibility and smoothness of operation. A rotation mechanism drives the lighting module to rotate synchronously around the detection module, providing multi-angle uniform illumination to enhance the contrast between the foreign object and the background, thereby improving the clarity and accuracy of the detected image.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foreign object detection device for facial tissues, characterized in that: Includes a base plate (1), the top of the base plate (1) is provided with a set of connecting frames (2), the bottom left side of the connecting frames (2) is provided with a set of first detection mechanisms (3), the right side of the first detection mechanism (3) is provided with a placement mechanism (4), the top of the placement mechanism (4) is provided with a second detection mechanism (5); The first detection mechanism (3) includes a fixed guide plate (31), a movable slide plate (32), a connecting seat (33), a first adjustment mechanism (34), a second adjustment mechanism (35), and a detection module (36). The left end of the bottom surface of the connecting frame (2) is slidably connected to a set of movable slide plates (32) through the fixed guide plate (31). The top surface of the movable slide plate (32) is rotatably connected to a set of connecting seats (33). The top left side of the connecting seat (33) is provided with a set of first adjustment mechanisms (34). The top of the connecting seat (33) is connected to a set of second adjustment mechanisms (35). The right end of the second adjustment mechanism (35) is provided with a set of detection modules (36).

2. The foreign object detection device for facial tissues according to claim 1, characterized in that: The top right end of the connecting seat (33) is provided with a set of guide plates (331), and the right end of the guide plates (331) is provided with a set of guide rods (332).

3. The foreign object detection device for facial tissues according to claim 1, characterized in that: The first adjustment mechanism (34) includes a second connecting frame (341), a first screw (342), a first force ring (343), and a first moving block (344). The top left side of the connecting seat (33) is provided with a second connecting frame (341). A first screw (342) is connected inside the second connecting frame (341). The left end of the first screw (342) extends through to the left end of the second connecting frame (341) and is connected to a first force ring (343). A first moving block (344) is provided outside the first screw (342). The top right side of the first moving block (344) is connected to the second adjustment mechanism (35).

4. The foreign object detection device for facial tissues according to claim 3, characterized in that: The second adjustment mechanism (35) includes a connecting frame three (351), a screw two (352), a force-applying ring two (353), and a moving block two (354). The bottom left side of the connecting frame three (351) is connected to the top right side of the moving block one (344). A set of screw two (352) is provided inside the connecting frame three (351). The top end of the screw two (352) extends through to the top end of the connecting frame three (351) and is connected to a set of force-applying ring two (353). A set of moving blocks two (354) is provided outside the screw two (352). The right side of the moving block two (354) is connected to the detection module one (36).

5. The foreign object detection device for facial tissues according to claim 1, characterized in that: The placement mechanism (4) includes a motor (41), a synchronous shaft (42), a guide frame (43), and a placement frame (44). A set of motors (41) is provided at the middle of the bottom of the connecting frame (2). The top of the drive shaft of the motor (41) extends through to the middle of the bottom surface of the connecting frame (2) and is connected to a set of synchronous shafts (42). A set of guide frames (43) is connected to the top of the synchronous shafts (42). A set of placement frames (44) is provided on the top surface of the guide frame (43).

6. The foreign object detection device for facial tissues according to claim 1, characterized in that: The second detection mechanism (5) includes a fixed cylinder (51), a second motor (52), a first connecting arm (53), a second connecting arm (54), a linkage mechanism (55), a third motor (56), and a first bevel gear (57). A set of fixed cylinders (51) is provided at the middle of the inner top surface of the first connecting frame (2). A set of second motors (52) is provided at the front top and left top of the fixed cylinder (51). A set of first connecting arms (53) is connected to the top of the drive shafts of the two sets of second motors (52). A set of second connecting arms (54) is provided at the other end of the first connecting arm (53). The other end of the two sets of second connecting arms (54) extends through into the fixed cylinder (51) and is connected to the linkage mechanism (55). A set of third motors (56) is provided at the rear top of the fixed cylinder (51). The front end of the drive shaft of the third motor (56) extends through into the fixed cylinder (51) and is connected to a set of first bevel gears (57).

7. The foreign object detection device for facial tissues according to claim 6, characterized in that: The linkage mechanism (55) includes a second bevel gear (551), a connecting cylinder (552), a rotating disk (553), a rotating mechanism (554), and a swing arm (555). The top end of the fixed cylinder (51) is provided with a set of second bevel gears (551). The bottom end of the second bevel gears (551) is connected to a set of rotating disks (553) through the connecting cylinder (552). The bottom end of the rotating disks (553) is provided with a rotating mechanism (554). The connecting cylinder (552) is provided with a set of swing arms (555). The top end of the swing arm (555) extends to the top end of the second bevel gears (551) and is connected to two sets of second connecting arms (54). The bottom end of the swing arm (555) extends through to the bottom end of the rotating mechanism (554) and is connected to a set of detection modules (5551).

8. The foreign object detection device for facial tissues according to claim 7, characterized in that: The rotating mechanism (554) includes a connecting crank arm (5541), a connecting plate (5542), a guide groove (5543), a connecting rod (5544), a connecting turntable (5545), and a lighting module (5546). The bottom surface of the turntable (553) is connected to a connecting plate (5542) through two sets of connecting crank arms (5541). A guide groove (5543) is provided in the middle of the connecting plate (5542). A set of connecting rods (5544) is provided at both the left and right ends of the guide groove (5543). The bottom ends of the two sets of connecting rods (5544) are connected to a connecting turntable (5545). The bottom surface of the connecting turntable (5545) is provided with no less than two sets of lighting modules (5546) at equal intervals.

9. The foreign object detection device for facial tissues according to claim 7, characterized in that: The second bevel gear (551) has a ring structure with its tooth surface facing upwards, and meshes with the first bevel gear (57).

10. The foreign object detection device for facial tissues according to claim 7, characterized in that: The top, middle and bottom ends of the swing arm (555) are connected to the inner end of the connecting arm (54), the connecting cylinder (552) and the middle end of the connecting turntable (5545) respectively through joint bearings.

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