Mask detection mechanism and use method thereof

Abstract

The invention discloses a mask detection mechanism and a use method thereof, and belongs to the technical field of mask detection. A mask detection mechanism comprises a rack and further comprises a conveying part, the conveying part comprises an upper conveying assembly and a lower conveying assembly which are arranged on the upper side and the lower side of the rack respectively and used for conveying mask bodies, and a gear set is arranged between the upper conveying assembly and the lower conveying assembly; the two infrared detection assemblies are arranged on the upper side of the upper conveying assembly and the upper side of the lower conveying assembly correspondingly. And an arc-shaped overturning seat. The arc-shaped overturning base is used for automatically overturning and conveying the mask in conveying, the two infrared detection assemblies are used for photographing and detecting the two sides of the mask body in conveying, the situation that the bottom of the mask is blocked and image blind spots exist is avoided, a clamp does not need to be used for clamping and overturning the mask in conveying, deformation of the mask in the clamping process is avoided, and the quality of the mask is improved. Therefore, the mask visual detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mask detection, and in particular to a mask detection mechanism and a use method thereof. Background Art

[0002] Currently, most masks are made of non-woven fabrics. During the production process, non-woven masks will have various defects such as poor ear strap welding, uninstalled nose strips, ear straps and nose strips of different lengths, masks overlapping and welded together, and the mask body stained with black spots and oil stains from production equipment. These defects may cause the mask to not be well fixed on the user's face, and some may even affect the user's health, so they need to be tested after production.

[0003] As mask production has been fully automated, production and quality requirements are getting higher and higher. General mask manufacturers rely on human eyes to distinguish one by one, which is extremely inefficient. As a result, the current mask quality inspection process is time-consuming and labor-intensive, and it is easy to cause visual fatigue to inspectors. It is easy to miss inspections and misinspections, which leads to quality risks of products, resulting in a large amount of product rework and waste of raw materials.

[0004] Although there are existing production lines that use infrared cameras to inspect masks, infrared cameras are generally installed on the upper and lower sides of the inspection position to photograph and inspect the front and back of the mask respectively, there is always an image blind spot at the bottom of the mask, and the image transmittance affects the visual inspection accuracy of the mask; at the same time, the existing infrared shooting equipment is generally fixed in position and can only shoot the mask as a whole. When the mask is enlarged, it is only enlarged and viewed through the overall picture taken, and the enlargement of the overall picture will still reduce the clarity of the photo, resulting in more distorted and blurred images, making it difficult to obtain local detail photos for defect identification, thereby affecting the inspection results. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose a mask detection mechanism and a method of using the same.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A mask detection mechanism includes a frame and also includes:

[0008] A conveying part, the conveying part includes an upper conveying assembly and a lower conveying assembly respectively arranged on the upper and lower sides of the frame, for conveying the mask body, and a gear set is arranged between the upper conveying assembly and the lower conveying assembly;

[0009] Infrared detection components, wherein two groups of infrared detection components are provided and are respectively placed on the upper side of the upper conveying component and the lower conveying component; and

[0010] An arc-shaped flip seat, which is fixedly connected to the frame and is placed between the upper conveying assembly and the lower conveying assembly, wherein the feed port of the arc-shaped flip seat is placed at the end of the upper conveying assembly, and the discharge port of the arc-shaped flip seat is placed at the head end of the lower conveying assembly;

[0011] Wherein, an auxiliary conveying component is arranged in the arc-shaped turning seat;

[0012] The upper conveying assembly and the lower conveying assembly have the same structure, both of which include two conveying rollers rotatably connected to the frame, a conveying belt is arranged between the two conveying rollers, a driving motor is fixed on the frame, and the output shaft of the driving motor is connected to one of the conveying rollers of the upper conveying assembly;

[0013] The infrared detection assembly includes a rotating rod rotatably connected to the frame, a torsion spring is arranged between the rotating rod and the frame, a connecting rod is fixed on the rotating rod, an end of the connecting rod away from the rotating rod is connected to a U-shaped frame, and an infrared camera is connected to the U-shaped frame;

[0014] The frame is rotatably connected with a rotating shaft, the rotating shaft is provided with a missing gear, the rotating rod is provided with a movable gear intermittently meshing with the missing gear, the rotating shaft and the conveying roller are both provided with a fifth synchronous wheel, and a fifth synchronous belt is provided between the two fifth synchronous wheels.

[0015] Preferably, the gear set includes a driving gear arranged on the conveying roller of the upper conveying assembly, a driven gear arranged on the conveying roller of the lower conveying assembly, and two mutually meshing transmission gears arranged between the driving gear and the driven gear, and the two transmission gears are respectively meshed and connected with the driving gear and the driven gear.

[0016] Preferably, the auxiliary conveying assembly includes a plurality of upper conveying shafts rotatably connected to the upper side of the arc-shaped flip seat and a plurality of lower conveying shafts rotatably connected to the lower side of the arc-shaped flip seat, and conveying wheels are provided on the upper conveying shafts and the lower conveying shafts, a first synchronous wheel is provided on two adjacent upper conveying shafts, a first synchronous belt is provided between the two first synchronous wheels, a second synchronous wheel is provided on two adjacent lower conveying shafts, and a second synchronous belt is provided between the two second synchronous wheels.

[0017] Preferably, the conveying roller of the upper conveying assembly and the upper conveying shaft are both provided with a third synchronous wheel, a third synchronous belt is provided between the two third synchronous wheels, and the conveying roller of the lower conveying assembly and the lower conveying shaft are both provided with a fourth synchronous wheel, and a fourth synchronous belt is provided between the two fourth synchronous wheels.

[0018] Preferably, the U-shaped frame is rotatably connected to a screw rod along its length direction, the screw rod is threadedly connected to a sleeve that is slidably connected to the U-shaped frame, the infrared camera is fixed on the sleeve, a pinion is fixed to the end of the screw rod, and an arc-shaped rack meshing with the pinion is fixed to the outer wall of the frame.

[0019] Preferably, the U-shaped frame and the connecting rod are arranged obliquely, and the central axis of the screw rod intersects with the central axis of the conveying roller.

[0020] The present invention also discloses a method for using a mask detection mechanism, comprising the following steps:

[0021] S1: The mask body to be inspected after production is conveyed to the upper conveying assembly, and the driving motor is controlled to operate. The output shaft of the driving motor drives one of the conveying rollers of the upper conveying assembly to rotate. The conveying roller drives another conveying roller of the upper conveying assembly to rotate under the action of the conveyor belt of the upper conveying assembly, thereby realizing the conveying work of the upper conveying assembly on the mask body;

[0022] When the conveying roller of the upper conveying assembly rotates, the driving gear meshes with one of the transmission gears for transmission, and the transmission gear meshes with the other transmission gear to drive the driven gear on the conveying roller of the lower conveying assembly to rotate, so that the conveying roller of the lower conveying assembly cooperates with the conveyor belt to convey the mask body. The conveying directions of the lower conveying assembly and the upper conveying assembly for the mask body are opposite;

[0023] The upper conveying roller drives one of the upper conveying shafts to rotate through the third synchronous wheel and the third synchronous belt, and the two adjacent upper conveying shafts rotate synchronously under the action of the first synchronous wheel and the first synchronous belt. The lower conveying roller drives one of the lower conveying shafts to rotate through the fourth synchronous wheel and the fourth synchronous belt, and the two adjacent lower conveying shafts rotate synchronously under the action of the second synchronous wheel and the second synchronous belt, so that the upper conveying shaft and the lower conveying shaft drive the conveying wheel to rotate;

[0024] S2: While the mask body is being transported by the upper conveying assembly, the infrared detection assembly on the upper side of the upper conveying assembly takes a photo of the upper side of the mask body being transported;

[0025] S3: When the conveying roller rotates, the fifth synchronous wheel and the fifth synchronous belt drive the rotating shaft to rotate. When the rotating shaft rotates, the missing gear on the outside is intermittently meshed with the movable gear for transmission. When the missing gear is meshed with the movable gear, the movable gear drives the rotating rod to rotate synchronously with the conveying roller. When the missing gear is not meshed with the movable gear, the rotating rod is reset and rotated under the action of the torsion spring. When the infrared camera rotates, the distance between the infrared camera and the mask body changes from far to near, so that the infrared camera can change from the overall shooting detection of the mask body to the partial shooting detection of the mask body;

[0026] When the rotating rod rotates, the connecting rod and the U-shaped frame drive the lead screw to move. When the lead screw moves, the small gear at the end engages with the arc-shaped rack on the outside of the frame for transmission, so that the lead screw rotates relative to the U-shaped frame. When the lead screw rotates, the sleeve moves along the axial direction of the lead screw, and the sleeve drives the infrared camera to move from one end of the lead screw to the other end, so that the infrared camera takes pictures of the mask body from one end to the other end as a whole and detects each part of the mask body;

[0027] S4: The mask body is then conveyed to the end of the upper conveying assembly and automatically enters the arc-shaped flip seat. After entering the arc-shaped flip seat, the mask body automatically slides down along its inner curved surface. When the mask body contacts the conveying wheel on the upper side of the arc-shaped flip seat or the conveying wheel on the lower side of the arc-shaped flip seat, the rotating conveying wheel assists in conveying the mask body to quickly slide down in the arc-shaped flip seat, thereby accelerating the conveying and transportation speed of the mask body.

[0028] S5: The mask body removed from the arc-shaped flip seat automatically flips over, and the bottom side of the mask body that was originally in contact with the conveyor belt of the upper conveying component is now facing upward. The infrared detection component on the upper side of the lower conveying component takes a photo of the side of the mask body that is now facing upward, and repeats S3 to perform a comprehensive inspection on both sides of the mask body. Then, the lower conveying component conveys the inspected mask body to the next processing step.

[0029] Compared with the prior art, the present invention provides a mask detection mechanism and a method for using the same, which have the following beneficial effects:

[0030] 1. The mask detection mechanism and its use method automatically flip the mask being transported by setting an arc-shaped flip seat, and cooperate with two infrared detection components to take pictures and detect both sides of the mask body being transported, thereby avoiding the situation where the bottom of the mask is blocked and there is an image blind spot. There is no need to use a clamp to clamp and flip the mask being transported, which avoids deformation of the mask during the clamping process, thereby improving the visual detection accuracy of the mask.

[0031] 2. The mask detection mechanism and its use method drive the auxiliary conveying assembly to work while conveying the mask body in the conveying part, so that the auxiliary conveying assembly automatically conveys the mask body that enters the arc-shaped flip seat and flips over, thereby accelerating the sliding speed of the mask body in the arc-shaped flip seat, thereby improving the detection efficiency of the mask.

[0032] 3. The mask detection mechanism and its use method, when the mask body is detected by the infrared detection component, the conveying roller drives the rotating shaft to rotate through the fifth synchronous wheel and the fifth synchronous belt. When the rotating shaft rotates, the missing gear on the outside is intermittently meshed with the movable gear for transmission. When the missing gear is meshed with the movable gear, the movable gear drives the rotating rod and the conveying roller to rotate synchronously. When the missing gear is not meshed with the movable gear, the rotating rod is reset and rotated under the action of the torsion spring. When the infrared camera rotates, the distance between the infrared camera and the mask body changes from far to near, so that the infrared camera can change from overall shooting detection of the mask body to partial shooting detection of the mask body, thereby improving the accuracy of the recognition result.

[0033] 4. The mask detection mechanism and its use method use a connecting rod and a U-shaped frame to drive the screw rod to move when the rotating rod rotates. When the screw rod moves, the pinion at the end engages with the arc-shaped rack on the outside of the frame for transmission, so that the screw rod rotates relative to the U-shaped frame. When the screw rod rotates, the sleeve moves along the axial direction of the screw rod, and the sleeve drives the infrared camera to move from one end of the screw rod to the other end, so that the infrared camera performs overall partial photo detection of the mask body from one end to the other end. Moreover, since the U-shaped frame and the screw rod are tilted relative to the connecting rod, when the infrared camera rotates and approaches the mask body on the conveyor belt, the sleeve drives the infrared camera to move upward along the axial direction of the screw rod, so that the infrared camera maintains the same height when moving from one end of the screw rod to the other end of the screw rod, that is, after the infrared camera flips toward the mask for a distance, it maintains the same height to perform partial photo detection of the mask body, so as to avoid the infrared camera being unable to effectively perform photo detection of all parts of the mask body due to the distance between the infrared camera and the mask body being too close when the infrared camera flips toward the mask body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0035] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0036] Figure 3 For the present invention Figure 2 A partial enlarged structural diagram of the middle part;

[0037] Figure 4 For the present invention Figure 2 A schematic diagram of the partially enlarged structure of the middle B part;

[0038] Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention;

[0039] Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure of the middle C part;

[0040] Figure 7 For the present invention Figure 5 The main view of

[0041] Figure 8 It is a structural schematic diagram of the lower conveying assembly of the present invention;

[0042] Fig. 9 It is a structural schematic diagram of the arc-shaped flip seat of the present invention;

[0043] Fig.10 It is a structural schematic diagram of the infrared detection component of the present invention;

[0044] Fig.11 It is a schematic diagram of the connection structure between the connecting rod and the U-shaped frame of the present invention.

[0045] In the figure: 1, frame; 2, upper conveying assembly; 3, lower conveying assembly; 4, gear set; 5, arc-shaped flip seat; 501, upper conveying shaft; 502, lower conveying shaft; 503, conveying wheel; 6, mask body; 7, conveying roller; 701, conveyor belt; 702, driving gear; 703, driven gear; 704, transmission gear; 705, driving motor; 8, first synchronous wheel; 9, second synchronous wheel; 10, third synchronous wheel; 11, fourth synchronous wheel; 12, rotating rod; 121, connecting rod; 122, U-shaped frame; 123, infrared camera; 13, rotating shaft; 131, missing gear; 132, movable gear; 14, fifth synchronous wheel; 15, screw rod; 151, sleeve; 152, pinion; 16, arc-shaped rack. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0047] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] Example 1: Reference Figure 1 , Figure 2 , Figure 5 , Figure 7 and Fig. 9 , a mask detection mechanism, including a frame 1, and also including:

[0049] The conveying part includes an upper conveying assembly 2 and a lower conveying assembly 3 respectively arranged on the upper and lower sides of the frame 1, and is used to convey the mask body 6. A gear set 4 is arranged between the upper conveying assembly 2 and the lower conveying assembly 3;

[0050] Infrared detection components, two groups of infrared detection components are provided and are respectively placed on the upper side of the upper conveying component 2 and the lower conveying component 3; and

[0051] The arc-shaped flip seat 5 is fixedly connected to the frame 1 and is placed between the upper conveying assembly 2 and the lower conveying assembly 3. The feed port of the arc-shaped flip seat 5 is placed at the end of the upper conveying assembly 2, and the discharge port of the arc-shaped flip seat 5 is placed at the head end of the lower conveying assembly 3;

[0052] Among them, an auxiliary conveying component is arranged in the arc-shaped turning seat 5.

[0053] Specifically, the mask body 6 to be inspected after production is conveyed to the upper conveying assembly 2, and the upper conveying assembly 2 conveys the mask body 6. During the conveying of the mask body 6 by the upper conveying assembly 2, the infrared detection assembly on the upper side of the upper conveying assembly 2 takes a photo to detect the upper side of the mask body 6 being conveyed, and then the mask body 6 is conveyed to the end of the upper conveying assembly 2 and automatically enters the arc-shaped flip seat 5. After entering the arc-shaped flip seat 5, the mask body 6 automatically slides down along its internal curved surface, and the mask body 6 removed from the arc-shaped flip seat 5 automatically flips over. The bottom side of the mask body 6 that was originally in contact with the conveyor belt 701 of the upper conveying assembly 2 is now facing upward, and the infrared detection assembly on the upper side of the lower conveying assembly 3 takes a photo to detect the side of the mask body 6 that is now facing upward, and then comprehensively detects both sides of the mask body 6, and then the lower conveying assembly 3 conveys the inspected mask body 6 to the next processing step;

[0054] The present application automatically flips the mask during transportation by setting an arc-shaped flip seat 5, and cooperates with two infrared detection components to take pictures and detect both sides of the mask body 6 during transportation, thereby avoiding the situation where the bottom of the mask is blocked and there is an image blind spot. There is no need to use a clamp to clamp and flip the mask during transportation, which avoids the mask from being deformed by force during the clamping process, thereby improving the visual detection accuracy of the mask.

[0055] Example 2: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8A mask detection mechanism, based on Example 1, further, the upper conveying assembly 2 and the lower conveying assembly 3 have the same structure, both include two conveying rollers 7 rotatably connected to the frame 1, a conveyor belt 701 is arranged between the two conveying rollers 7, and a drive motor 705 is fixed on the frame 1, and the output shaft of the drive motor 705 is connected to one of the conveying rollers 7 of the upper conveying assembly 2.

[0056] Furthermore, the gear set 4 includes a driving gear 702 arranged on the conveying roller 7 of the upper conveying component 2, a driven gear 703 arranged on the conveying roller 7 of the lower conveying component 3, and two mutually meshing transmission gears 704 arranged between the driving gear 702 and the driven gear 703, and the two transmission gears 704 are respectively meshed and connected with the driving gear 702 and the driven gear 703.

[0057] Specifically, when the conveying part is working, the driving motor 705 is controlled to run, and the output shaft of the driving motor 705 drives one of the conveying rollers 7 of the upper conveying component 2 to rotate. Under the action of the conveying belt 701 of the upper conveying component 2, the conveying roller 7 drives the other conveying roller 7 of the upper conveying component 2 to rotate, thereby realizing the conveying work of the upper conveying component 2 on the mask body 6. When the conveying roller 7 of the upper conveying component 2 rotates, the driving gear 702 engages with one of the transmission gears 704 for transmission, and the transmission gear 704 engages with the other transmission gear 704 for transmission, thereby driving the driven gear 703 on the conveying roller 7 of the lower conveying component 3 to rotate, so that the conveying roller 7 of the lower conveying component 3 cooperates with the conveying belt 701 to convey the mask body 6, and the conveying directions of the lower conveying component 3 and the upper conveying component 2 on the mask body 6 are opposite.

[0058] Example 3: Reference Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Fig. 9 A mask detection mechanism, based on Example 2, further, the auxiliary conveying assembly includes a plurality of upper conveying shafts 501 rotatably connected to the upper side of the arc-shaped flip seat 5 and a plurality of lower conveying shafts 502 rotatably connected to the lower side of the arc-shaped flip seat 5, and conveying wheels 503 are arranged on the upper conveying shafts 501 and the lower conveying shafts 502, and first synchronous wheels 8 are arranged on two adjacent upper conveying shafts 501, and a first synchronous belt is arranged between the two first synchronous wheels 8, and second synchronous wheels 9 are arranged on two adjacent lower conveying shafts 502, and a second synchronous belt is arranged between the two second synchronous wheels 9.

[0059] Furthermore, a third synchronous wheel 10 is provided on the conveying roller 7 of the upper conveying component 2 and the upper conveying shaft 501, and a third synchronous belt is provided between the two third synchronous wheels 10; a fourth synchronous wheel 11 is provided on the conveying roller 7 of the lower conveying component 3 and the lower conveying shaft 502, and a fourth synchronous belt is provided between the two fourth synchronous wheels 11.

[0060] Specifically, the upper conveying roller 7 drives one of the upper conveying shafts 501 to rotate through the third synchronous wheel 10 and the third synchronous belt, and the two adjacent upper conveying shafts 501 rotate synchronously under the action of the first synchronous wheel 8 and the first synchronous belt, and the lower conveying roller 7 drives one of the lower conveying shafts 502 to rotate through the fourth synchronous wheel 11 and the fourth synchronous belt, and the two adjacent lower conveying shafts 502 rotate synchronously under the action of the second synchronous wheel 9 and the second synchronous belt, so that the upper conveying shaft 501 and the lower conveying shaft 502 drive the conveying wheel 503 to rotate, and the mask body 6 automatically enters the arc-shaped turning seat 5 after being conveyed to the end of the upper conveying assembly 2. After entering the arc-shaped turning seat 5, the mask body 6 automatically slides down along its internal curved surface. When the mask body 6 contacts the conveying wheel 503 on the upper side of the arc-shaped turning seat 5 or contacts the conveying wheel 503 on the lower side of the arc-shaped turning seat 5, the rotating conveying wheel 503 assists in conveying the mask body 6 to slide down quickly in the arc-shaped turning seat 5, thereby accelerating the conveying and transportation speed of the mask body 6, thereby improving the detection efficiency of the mask.

[0061] Example 4: Reference Figure 2 , Figure 4 , Figure 5 , Figure 7 and Fig.10 A mask detection mechanism, based on Example 3, further, the infrared detection component includes a rotating rod 12 rotatably connected to the frame 1, a torsion spring is arranged between the rotating rod 12 and the frame 1, a connecting rod 121 is fixed to the rotating rod 12, and a U-shaped frame 122 is connected to the end of the connecting rod 121 away from the rotating rod 12, and an infrared camera 123 is connected to the U-shaped frame 122.

[0062] Furthermore, a rotating shaft 13 is rotatably connected to the frame 1, a missing gear 131 is provided on the rotating shaft 13, a movable gear 132 intermittently meshing with the missing gear 131 is provided on the rotating rod 12, a fifth synchronous wheel 14 is provided on the rotating shaft 13 and the conveying roller 7, and a fifth synchronous belt is provided between the two fifth synchronous wheels 14.

[0063] Specifically, when the infrared detection component detects the mask body 6, the conveying roller 7 drives the rotating shaft 13 to rotate through the fifth synchronous wheel 14 and the fifth synchronous belt. When the rotating shaft 13 rotates, the outer missing gear 131 and the movable gear 132 are intermittently meshed for transmission. When the missing gear 131 is meshed with the movable gear 132, the movable gear 132 drives the rotating rod 12 to rotate synchronously with the conveying roller 7. When the missing gear 131 is not meshed with the movable gear 132, the rotating rod 12 is reset and rotated under the action of the torsion spring. When the infrared camera 123 rotates back and forth, the distance between the infrared camera 123 and the mask body 6 changes from far to near, so that the infrared camera 123 can change from the overall shooting detection of the mask body 6 to the local shooting detection of the mask body 6, thereby improving the accuracy of the recognition result of the infrared camera 123.

[0064] Example 5: Reference Figure 2 , Figure 5 , Figure 7 , Fig.10 and Fig.11 A mask detection mechanism, based on Example 4, further, a U-shaped frame 122 is rotatably connected to a screw rod 15 along its length direction, a sleeve 151 is threadedly connected to the screw rod 15 and is slidably connected to the U-shaped frame 122, an infrared camera 123 is fixed to the sleeve 151, a pinion 152 is fixed to the end of the screw rod 15, and an arc-shaped rack 16 meshing with the pinion 152 is fixed to the outer wall of the frame 1.

[0065] Furthermore, the U-shaped frame 122 and the connecting rod 121 are arranged obliquely, and the central axis of the screw rod 15 intersects with the central axis of the conveying roller 7 .

[0066] Specifically, when the rotating rod 12 rotates, the screw rod 15 is driven to move through the connecting rod 121 and the U-shaped frame 122. When the screw rod 15 moves, the small gear 152 at the end engages with the arc-shaped rack 16 on the outside of the frame 1 for transmission, so that the screw rod 15 rotates relative to the U-shaped frame 122. When the screw rod 15 rotates, the sleeve 151 moves axially along the screw rod 15, and the sleeve 151 drives the infrared camera 123 to move from one end of the screw rod 15 to the other end, so that the infrared camera 123 takes pictures of the mask body 6 from one end to the other end as a whole, and because the U-shaped frame 122 and the screw rod 15 are inclined relative to the connecting rod 121 The arrangement is such that when the infrared camera 123 rotates and approaches the mask body 6 on the conveyor belt 701, the sleeve 151 drives the infrared camera 123 to move upward along the axial direction of the screw rod 15, so that the infrared camera 123 remains at the same height when moving from one end of the screw rod 15 to the other end of the screw rod 15, that is, after the infrared camera 123 flips over and approaches the mask for a certain distance, it remains at the same height to take local photographs and detect the mask body 6, thereby preventing the infrared camera 123 from being unable to effectively take photographs and detect all parts of the mask body 6 due to the distance between the infrared camera 123 and the mask body 6 being too close when the infrared camera 123 flips over the mask body 6.

[0067] The present invention also discloses a method for using a mask detection mechanism, comprising the following steps:

[0068] S1: The mask body 6 to be inspected after production is transported to the upper conveying assembly 2, and the driving motor 705 is controlled to operate. The output shaft of the driving motor 705 drives one of the conveying rollers 7 of the upper conveying assembly 2 to rotate. The conveying roller 7 drives another conveying roller 7 of the upper conveying assembly 2 to rotate under the action of the conveying belt 701 of the upper conveying assembly 2, thereby realizing the conveying work of the upper conveying assembly 2 on the mask body 6;

[0069] When the conveying roller 7 of the upper conveying assembly 2 rotates, the driving gear 702 engages with one of the transmission gears 704 for transmission, and the transmission gear 704 engages with the other transmission gear 704 to drive the driven gear 703 on the conveying roller 7 of the lower conveying assembly 3 to rotate, so that the conveying roller 7 of the lower conveying assembly 3 cooperates with the conveyor belt 701 to convey the mask body 6, and the conveying directions of the lower conveying assembly 3 and the upper conveying assembly 2 for the mask body 6 are opposite;

[0070] The upper conveying roller 7 drives one of the upper conveying shafts 501 to rotate through the third synchronous wheel 10 and the third synchronous belt, and the two adjacent upper conveying shafts 501 rotate synchronously under the action of the first synchronous wheel 8 and the first synchronous belt. The lower conveying roller 7 drives one of the lower conveying shafts 502 to rotate through the fourth synchronous wheel 11 and the fourth synchronous belt, and the two adjacent lower conveying shafts 502 rotate synchronously under the action of the second synchronous wheel 9 and the second synchronous belt, so that the upper conveying shaft 501 and the lower conveying shaft 502 drive the conveying wheel 503 to rotate;

[0071] S2: While the mask body 6 is being transported by the upper conveying assembly 2, the infrared detection assembly on the upper side of the upper conveying assembly 2 takes a photo to detect the upper side of the mask body 6 being transported;

[0072] S3: When the conveying roller 7 rotates, the fifth synchronous wheel 14 and the fifth synchronous belt drive the rotating shaft 13 to rotate. When the rotating shaft 13 rotates, the outer missing gear 131 and the movable gear 132 are intermittently meshed for transmission. When the missing gear 131 is meshed with the movable gear 132, the movable gear 132 drives the rotating rod 12 to rotate synchronously with the conveying roller 7. When the missing gear 131 is not meshed with the movable gear 132, the rotating rod 12 is reset and rotated under the action of the torsion spring. When the infrared camera 123 rotates, the distance between the infrared camera 123 and the mask body 6 changes from far to near, so that the infrared camera 123 can change from the overall shooting detection of the mask body 6 to the partial shooting detection of the mask body 6;

[0073] When the rotating rod 12 rotates, the screw rod 15 is driven to move through the connecting rod 121 and the U-shaped frame 122. When the screw rod 15 moves, the pinion 152 at the end engages with the arc-shaped rack 16 on the outside of the frame 1 for transmission, so that the screw rod 15 rotates relative to the U-shaped frame 122. When the screw rod 15 rotates, the sleeve 151 moves axially along the screw rod 15, and the sleeve 151 drives the infrared camera 123 to move from one end of the screw rod 15 to the other end, so that the infrared camera 123 takes pictures of the mask body 6 from one end to the other end as a whole and detects the parts one by one;

[0074] S4: Then the mask body 6 is conveyed to the end of the upper conveying assembly 2 and automatically enters the arc-shaped flip seat 5. After entering the arc-shaped flip seat 5, the mask body 6 automatically slides down along the inner curved surface thereof. When the mask body 6 contacts the conveying wheel 503 on the upper side of the arc-shaped flip seat 5 or contacts the conveying wheel 503 on the lower side of the arc-shaped flip seat 5, the rotating conveying wheel 503 assists in conveying the mask body 6 to quickly slide down in the arc-shaped flip seat 5, thereby accelerating the conveying and transportation speed of the mask body 6;

[0075] S5: The mask body 6 moved out from the arc-shaped turning seat 5 is automatically turned over, and the bottom side of the mask body 6 that was originally in contact with the conveyor belt 701 of the upper conveying component 2 is now facing upward, and the infrared detection component on the upper side of the lower conveying component 3 takes a photo of the side of the mask body 6 facing upward at this time, and repeats S3, and then comprehensively inspects both sides of the mask body 6, and then the lower conveying component 3 conveys the inspected mask body 6 to the next processing step.

[0076] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mask detection mechanism, comprising a frame (1), characterized in that: Also includes: A conveying section, the conveying section comprising an upper conveying assembly (2) and a lower conveying assembly (3) respectively arranged on the upper and lower sides of the frame (1), and used for conveying the mask body (6), and a gear set (4) is arranged between the upper conveying assembly (2) and the lower conveying assembly (3); Infrared detection components, wherein two groups of infrared detection components are provided and are respectively placed on the upper side of the upper conveying component (2) and the lower conveying component (3); and An arc-shaped flip seat (5), the arc-shaped flip seat (5) is fixedly connected to the frame (1) and is disposed between the upper conveying assembly (2) and the lower conveying assembly (3), the feed port of the arc-shaped flip seat (5) is disposed at the end of the upper conveying assembly (2), and the discharge port of the arc-shaped flip seat (5) is disposed at the head end of the lower conveying assembly (3); Wherein, an auxiliary conveying component is arranged in the arc-shaped turning seat (5); The upper conveying assembly (2) and the lower conveying assembly (3) have the same structure, both comprising two conveying rollers (7) rotatably connected to the frame (1), a conveying belt (701) being arranged between the two conveying rollers (7), a driving motor (705) being fixedly arranged on the frame (1), and an output shaft of the driving motor (705) being connected to one of the conveying rollers (7) of the upper conveying assembly (2); The infrared detection component comprises a rotating rod (12) rotatably connected to the frame (1), a torsion spring is arranged between the rotating rod (12) and the frame (1), a connecting rod (121) is fixedly arranged on the rotating rod (12), an end of the connecting rod (121) away from the rotating rod (12) is connected to a U-shaped frame (122), and an infrared camera (123) is connected to the U-shaped frame (122); The frame (1) is rotatably connected to a rotating shaft (13), the rotating shaft (13) is provided with a missing gear (131), the rotating rod (12) is provided with a movable gear (132) intermittently meshing with the missing gear (131), the rotating shaft (13) and the conveying roller (7) are both provided with a fifth synchronous wheel (14), and a fifth synchronous belt is provided between the two fifth synchronous wheels (14).

2. A mask detection mechanism according to claim 1, characterized in that: The gear set (4) comprises a driving gear (702) arranged on the conveying roller (7) of the upper conveying assembly (2), a driven gear (703) arranged on the conveying roller (7) of the lower conveying assembly (3), and two mutually meshing transmission gears (704) arranged between the driving gear (702) and the driven gear (703), wherein the two transmission gears (704) are respectively meshed and connected with the driving gear (702) and the driven gear (703).

3. A mask detection mechanism according to claim 2, characterized in that: The auxiliary conveying assembly comprises a plurality of upper conveying shafts (501) rotatably connected to the upper side of the arc-shaped flip seat (5) and a plurality of lower conveying shafts (502) rotatably connected to the lower side of the arc-shaped flip seat (5); conveying wheels (503) are arranged on the upper conveying shafts (501) and the lower conveying shafts (502); a first synchronous wheel (8) is arranged on two adjacent upper conveying shafts (501); a first synchronous belt is arranged between the two first synchronous wheels (8); a second synchronous wheel (9) is arranged on two adjacent lower conveying shafts (502); a second synchronous belt is arranged between the two second synchronous wheels (9).

4. A mask detection mechanism according to claim 3, characterized in that: A third synchronous wheel (10) is arranged on the conveying roller (7) of the upper conveying assembly (2) and the upper conveying shaft (501), and a third synchronous belt is arranged between the two third synchronous wheels (10); a fourth synchronous wheel (11) is arranged on the conveying roller (7) of the lower conveying assembly (3) and the lower conveying shaft (502), and a fourth synchronous belt is arranged between the two fourth synchronous wheels (11).

5. A mask detection mechanism according to claim 4, characterized in that: The U-shaped frame (122) is rotatably connected to a screw rod (15) along its length direction; a sleeve (151) is threadedly connected to the screw rod (15) and is slidably connected to the U-shaped frame (122); the infrared camera (123) is fixedly mounted on the sleeve (151); a pinion (152) is fixedly mounted on the end of the screw rod (15); and an arc-shaped rack (16) meshing with the pinion (152) is fixedly mounted on the outer wall of the frame (1).

6. A mask detection mechanism according to claim 5, characterized in that: The U-shaped frame (122) and the connecting rod (121) are arranged obliquely, and the central axis of the screw rod (15) intersects with the central axis of the conveying roller (7).

7. A method for using the mask detection mechanism according to claim 6, characterized in that: The following steps are involved: S1: The mask body (6) to be inspected after production is conveyed to the upper conveying assembly (2), and the driving motor (705) is controlled to operate. The output shaft of the driving motor (705) drives one of the conveying rollers (7) of the upper conveying assembly (2) to rotate. The conveying roller (7) drives another conveying roller (7) of the upper conveying assembly (2) to rotate under the action of the conveying belt (701) of the upper conveying assembly (2), thereby realizing the conveying work of the upper conveying assembly (2) on the mask body (6); When the conveying roller (7) of the upper conveying assembly (2) rotates, the driving gear (702) engages with one of the transmission gears (704) for transmission, and the transmission gear (704) engages with the other transmission gear (704) for transmission, thereby driving the driven gear (703) on the conveying roller (7) of the lower conveying assembly (3) to rotate, so that the conveying roller (7) of the lower conveying assembly (3) cooperates with the conveyor belt (701) to convey the mask body (6), and the lower conveying assembly (3) and the upper conveying assembly (2) convey the mask body (6) in opposite directions; The upper conveying roller (7) drives one of the upper conveying shafts (501) to rotate through the third synchronous wheel (10) and the third synchronous belt, and the two adjacent upper conveying shafts (501) rotate synchronously under the action of the first synchronous wheel (8) and the first synchronous belt. The lower conveying roller (7) drives one of the lower conveying shafts (502) to rotate through the fourth synchronous wheel (11) and the fourth synchronous belt, and the two adjacent lower conveying shafts (502) rotate synchronously under the action of the second synchronous wheel (9) and the second synchronous belt, so that the upper conveying shaft (501) and the lower conveying shaft (502) drive the conveying wheel (503) to rotate; S2: While the mask body (6) is being transported by the upper transport component (2), the infrared detection component on the upper side of the upper transport component (2) takes a photo of the upper side of the mask body (6) being transported; S3: When the conveying roller (7) rotates, the fifth synchronous wheel (14) and the fifth synchronous belt drive the rotating shaft (13) to rotate. When the rotating shaft (13) rotates, the outer missing gear (131) and the movable gear (132) are intermittently meshed and transmitted. When the missing gear (131) is meshed with the movable gear (132), the movable gear (132) drives the rotating rod (12) and the conveying roller (7) to rotate synchronously. When the missing gear (131) is not meshed with the movable gear (132), the rotating rod (12) is reset and rotated under the action of the torsion spring. When the infrared camera (123) rotates, the distance between the infrared camera (123) and the mask body (6) changes from far to near, so that the infrared camera (123) can change from the overall shooting detection of the mask body (6) to the partial shooting detection of the mask body (6); When the rotating rod (12) rotates, the screw rod (15) is driven to move through the connecting rod (121) and the U-shaped frame (122). When the screw rod (15) moves, the small gear (152) at the end thereof is meshed with the arc-shaped rack (16) on the outer side of the frame (1) for transmission, thereby causing the screw rod (15) to rotate relative to the U-shaped frame (122). When the screw rod (15) rotates, the sleeve (151) moves along the axial direction of the screw rod (15), and the sleeve (151) drives the infrared camera (123) to move from one end of the screw rod (15) to the other end, thereby causing the infrared camera (123) to take photos of the mask body (6) from one end to the other end as a whole and perform partial detection one by one; S4: The mask body (6) is then conveyed to the end of the upper conveying assembly (2) and automatically enters the arc-shaped flip seat (5). After entering the arc-shaped flip seat (5), the mask body (6) automatically slides down along the inner curved surface thereof. When the mask body (6) contacts the conveying wheel (503) on the upper side of the arc-shaped flip seat (5) or contacts the conveying wheel (503) on the lower side of the arc-shaped flip seat (5), the rotating conveying wheel (503) assists in conveying the mask body (6) to quickly slide down in the arc-shaped flip seat (5), thereby accelerating the conveying and transportation speed of the mask body (6); S5: The mask body (6) removed from the arc-shaped turning seat (5) is automatically turned over, and the bottom side of the mask body (6) that was originally in contact with the conveyor belt (701) of the upper conveying component (2) is now facing upward. The infrared detection component on the upper side of the lower conveying component (3) takes a photo of the side of the mask body (6) facing upward at this time, and repeats S3 to further perform a comprehensive inspection on both sides of the mask body (6). Then, the lower conveying component (3) conveys the mask body (6) that has been inspected to the next processing step.

Images