Bottle preform optical detection system

Abstract

The utility model relates to the technical field of bottle preform detection, in particular to a bottle preform optical detection system which comprises a rotating assembly, a feeding assembly, a discharging assembly and a driving assembly, wherein the feeding assembly and the discharging assembly are located on the two sides of the rotating assembly, and the driving assembly is used for driving the rotating assembly, the feeding assembly and the discharging assembly. The detection assembly is located between the feeding assembly and the discharging assembly and matched with the rotating assembly, the rotating assembly comprises a first rotating shaft, a supporting frame is rotationally installed at the upper end of the first rotating shaft, a rotating frame is fixedly installed in the middle of the first rotating shaft, and multiple sets of material taking assemblies are fixedly installed on the periphery of the rotating frame. According to the optical detection system for the bottle preform, the defects that in the prior art, 360-degree dead-corner-free detection cannot be carried out on the bottle preform, and an optical camera is difficult to arrange are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of bottle embryo detection, in particular to a bottle embryo optical detection system. Background Art

[0002] At present, PET bottles have been widely used in the packaging fields of medicines and foods. The processing of bottles has realized a large-scale automated production line. One of the important steps on the processing line is to blow the preforms. The first thing to ensure in the blowing process is that the preforms entering the blowing machine are qualified products. If there are broken or deformed bottle mouths, or bubbles or black spots on the bottle body, the production line will produce unqualified bottles, which seriously affects the production efficiency of the line.

[0003] For this purpose, there is a bottle preform inspection device in the prior art. The existing bottle preform inspection is basically divided into the inspection of the flatness and damage of the bottle mouth, and the inspection of black spots, bubbles, scratches, etc. on the bottle body. For example, a bottle preform visual inspection system proposed in Chinese patent application number "CN202021745158.9" realizes inspection through optical cameras at various angles. However, the inspection device not only makes it difficult to arrange the optical camera, but also mostly performs single-sided inspection, and cannot perform 360-degree inspection on the bottle preform without blind spots.

[0004] Based on the above-mentioned shortcomings of the prior art, this case proposes a bottle preform optical inspection system that can achieve 360-degree detection of bottle preforms without blind spots and has a simple optical camera layout. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art, such as the inability to perform 360-degree detection of bottle preforms without blind spots and the difficulty in arranging optical cameras, and proposes a bottle preform optical detection system.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A bottle embryo optical inspection system is designed, including a rotating component, a loading component and a unloading component located on both sides of the rotating component, a driving component for driving the rotating component, the loading component and the unloading component, and a detection component located between the loading component and the unloading component and cooperating with the rotating component. The rotating component includes a first rotating shaft, a support frame is rotatably mounted on the upper end of the first rotating shaft, a rotating frame is fixedly mounted on the middle part of the first rotating shaft, a plurality of groups of picking components are fixedly mounted on the outer circumference of the rotating frame, a plurality of groups of belt support shafts and foot platforms cooperating with the picking components are arranged in the supporting frame, a self-rotating belt cooperating with the picking components is fixedly mounted between the plurality of groups of the belt support shafts, and the self-rotating belt and the foot platform are respectively used to control the self-rotation and up and down movement of the picking component.

[0008] Preferably, the end of the foot platform close to the unloading component is provided with a first slope portion that cooperates with the material picking component, and the end of the foot platform close to the loading component is provided with a second slope portion that cooperates with the material picking component. The first slope portion is a gentle slope structure, and the second slope portion is a steep slope structure.

[0009] Preferably, both the loading assembly and the unloading assembly include a second rotating shaft, a transfer wheel is fixedly mounted on the upper end of the second rotating shaft, a limiting bracket is provided on the outer periphery of the transfer wheel, a plurality of storage grooves for placing bottle preforms are provided on the outer circumference of the transfer wheel, a docking port and a conveying port are respectively provided on the periphery of the limiting bracket, the limiting bracket on the unloading assembly is located between the docking port and the conveying port and has a material inspection port, and a waste material trough is provided below the material inspection port.

[0010] Preferably, the storage groove is an oblique opening structure, one end of the conveying port is an arc-shaped structure and extends to the top of the storage groove, and a pushing cylinder is installed at the upper end of the material inspection port.

[0011] Preferably, the driving assembly comprises a driving motor, and the lower ends of the first rotating shaft and the second rotating shaft are fixedly sleeved with synchronous pulleys, and kinetic energy is transmitted between the driving motor and the two sets of synchronous pulleys via synchronous belts.

[0012] Preferably, the detection component includes multiple groups of extension racks, which are respectively arranged on one side of the rotating component, the loading component, and the unloading component. Optical detection cameras for detecting bottle preforms are fixedly installed on the upper ends of the multiple groups of extension racks, and multiple groups of background plates that cooperate with the optical detection cameras are fixedly installed on the inner sides of the multiple groups of material picking components through the extension racks.

[0013] Preferably, the material picking assembly includes a mounting base shell, a sliding rod is slidably installed inside the mounting base shell, the lower end of the sliding rod extends to the lower fixed sleeve of the mounting base shell and is provided with a plug-in portion, the upper end of the sliding rod extends to the upper fixed sleeve of the mounting base shell and is provided with a contact wheel, the contact wheel is in sliding abutment with the self-rotating belt, the outer rotating sleeve of the upper end of the sliding rod is provided with a connecting rod, and one end of the connecting rod is rotatably installed with an abutment piece that is in sliding abutment with the foot platform.

[0014] Preferably, a first connecting piece or a second connecting piece is welded to the outer end surface of the mounting base shell, and the mounting base shell is fixedly connected to the rotating frame via the first connecting piece or the second connecting piece, and two adjacent groups of the mounting base shells are respectively provided with a first connecting piece and a second connecting piece, and the two adjacent groups of the mounting base shells are connected to each other via the first connecting piece and the second connecting piece.

[0015] Preferably, bearings are fixedly mounted at the openings at the upper and lower ends of the mounting base shell, the sliding rod is rotatably mounted on the inner side of the bearing, and a limiting ring that movably abuts against the bearing is integrally formed on the outer end surface of the sliding rod.

[0016] Preferably, a plurality of groups of supporting slide bars are slidably inserted into the outer circumference of the rotating frame, and an outer end of the connecting rod is fixedly sleeved on the outer periphery of a group of the supporting slide bars through an abutment member.

[0017] The utility model provides an optical inspection system for preforms, which has the following beneficial effects:

[0018] Through the cooperation between the self-rotating belt and the picking assembly, the self-rotating belt can drive the sliding rod, the plug-in part and other components on the picking assembly to drive the bottle preform to rotate along its own central axis. Only one optical inspection camera needs to be installed on one side to achieve 360-degree inspection of the bottle preform without blind spots, thereby improving the inspection quality and reducing the difficulty of laying out the optical camera.

[0019] Through the cooperation between the provided foot platform and the material picking assembly, the longitudinal height of the sliding rod can be changed by the foot platform, so that the plug-in portion on the sliding rod can be inserted into or detached from the bottle embryo, thereby achieving the effect of material transfer. The first slope portion and the second slope portion provided on the foot platform enable the plug-in portion to be better inserted into or detached from the bottle embryo. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the main body;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure with the external workbench removed;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the loading component and the unloading component;

[0023] Figure 4 The figure is a schematic diagram of the three-dimensional structure of the footrest;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating component;

[0025] Figure 6 It is a schematic diagram of the side cross-sectional structure of the rotating assembly;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the material taking component;

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the material taking component;

[0028] Fig. 9 This is a structural diagram of the installation effect of the self-rotating belt.

[0029] In the figure:

[0030] 1. first rotating shaft; 101. supporting frame; 102. rotating frame; 103. supporting slide bar; 104. belt supporting shaft; 1041. self-rotating belt; 105. foot platform; 1051. first slope portion; 1052. second slope portion;

[0031] 2. Second rotating shaft; 201. Transfer wheel; 2011. Storage tank; 202. Limit bracket; 2021. Docking port; 2022. Delivery port; 2023. Material inspection port; 2024. Waste tank;

[0032] 3. Install the base shell; 301. First connecting piece; 3011. Second connecting piece; 302. Sliding rod; 3021. Contact wheel; 303. Limiting ring; 304. Bearing; 305. Connecting part; 3051. Contact ring; 306. Bottle embryo body; 3061. Bottle embryo mouth; 307. Connecting rod; 3071. Abutment piece;

[0033] 4. Driving motor; 401. Synchronous belt; 402. Synchronous pulley;

[0034] 5. Extension rack; 501. Optical detection camera; 502. Background board. DETAILED DESCRIPTION

[0035] 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 of the embodiments. For the convenience of description, the preform mentioned below is a combination of the preform body and the preform mouth.

[0036] Reference Figure 1 , 2 , 6, 9, here are examples of implementation methods of the subject:

[0037] A preform optical inspection system includes a rotating assembly, a feeding assembly and a discharging assembly located on both sides of the rotating assembly, a driving assembly for driving the rotating assembly, the feeding assembly and the discharging assembly, and a detection assembly located between the feeding assembly and the discharging assembly and cooperating with the rotating assembly; the rotating assembly includes a first rotating shaft 1, a support frame 101 is rotatably mounted on the upper end of the first rotating shaft 1, a rotating frame 102 is fixedly mounted on the middle of the first rotating shaft 1, a plurality of groups of picking assemblies are fixedly mounted on the outer circumference of the rotating frame 102, and a belt support shaft 104 and a footrest 105 cooperating with the picking assemblies are arranged in the supporting frame 101;

[0038] Based on the above content, the driving assembly is used to drive the synchronous rotation of the rotating assembly, the loading assembly, and the unloading assembly, so that the preform can be transported to the rotating assembly through the loading assembly, and the rotating assembly drives the preform to rotate and pass through the detection assembly for detection, and then the unloading assembly takes down the detected preform on the rotating assembly and transports it outward; the picking assembly realizes the two functions of grabbing the preform on the loading assembly and placing the preform on the unloading assembly by cooperating with the footrest 105; the picking assembly realizes the function of rotating along its own central axis by cooperating with the belt support shaft 104, thereby driving the preform on the picking assembly to rotate, so that the detection assembly can better detect the preform in a surrounding manner, that is, the preform is rotated by the relevant structure to achieve the whole body inspection of the preform, instead of the existing multi-angle setting detection assembly to achieve the whole body inspection of the preform, and its specific matching structure will be described below;

[0039] For further reference, Figure 1 The loading assembly and the unloading assembly should be located on the same side of the rotating assembly, so that the other side of the rotating assembly has a larger travel space to accommodate the detection assembly;

[0040] For further reference, Figure 6 , the support frame 101 is provided with two groups at the top and the bottom, and the support frame 101 is fixedly connected with the external workbench and other components through the support column and other structures, that is, when the first rotating shaft 1 rotates along its own central axis, the support frame 101 does not rotate synchronously with the first rotating shaft 1;

[0041] Furthermore, two groups of belt support shafts 104 are provided, and the two groups of belt support shafts 104 and the foot platform 105 are arranged inside the support frame 101 opposite to each other, the belt support shaft 104 and the detection component are located on the same side, and the foot platform 105 and the loading component and the unloading component are located on the same side;

[0042] Furthermore, a self-rotating belt 1041 that cooperates with the material picking assembly is fixedly installed between the two sets of belt support shafts 104, a first slope portion 1051 that cooperates with the material picking assembly is provided at one end of the foot platform 105 close to the unloading assembly, and a second slope portion 1052 that cooperates with the material picking assembly is provided at one end of the foot platform 105 close to the loading assembly. The first slope portion 1051 is a gentle slope structure, and the second slope portion 1052 is a steep slope structure.

[0043] Reference Figure 3 Here is an example of the implementation of the loading component and the unloading component:

[0044] Both the loading assembly and the unloading assembly include a second rotating shaft 2, a transfer wheel 201 is fixedly mounted on the upper end of the second rotating shaft 2, a limiting bracket 202 is sleeved on the periphery of the transfer wheel 201, a plurality of groups of placement slots 2011 for placing bottle embryos are provided on the periphery of the transfer wheel 201, a docking port 2021 and a conveying port 2022 are respectively provided on the periphery of the limiting bracket 202, a material inspection port 2023 is provided on the limiting bracket 202 on the unloading assembly between the docking port 2021 and the conveying port 2022, and a waste material slot 2024 is provided below the material inspection port 2023;

[0045] Based on the above content, refer to Figure 3 There is a gap between the transfer wheel 201 and the limiting bracket 202 to facilitate the transfer of the bottle preform; the limiting bracket 202 should be fixedly connected to the external workbench and other components; the docking port 2021 cooperates with the rotating component to remove or place the bottle preform in the storage tank 2011, and the conveying port 2022 cooperates with the storage tank 2011 to remove or place the bottle preform in the storage tank 2011;

[0046] For further reference, Figure 3 The storage slot 2011 is an oblique opening structure, so that the combination of the transfer wheel 201 and the storage slot 2011 forms a one-way ratchet structure. One end of the delivery port 2022 is an arc-shaped structure and extends to the top of the storage slot 2011. Figure 3 The right half is the loading assembly. When the transfer wheel 201 rotates clockwise, the preforms at the front end of the delivery port 2022 located in the arc-shaped structure area will be grabbed by the storage slot 2011, and vice versa, the preforms in the storage slot 2011 will enter the arc-shaped structure area.

[0047] Furthermore, a push cylinder may be installed at the upper end of the inspection port 2023, and the push cylinder cooperates with the detection component to remove unqualified preforms on the unloading component, and the removed preforms fall into the waste trough 2024 through the inspection port 2023 for recycling.

[0048] Reference Figure 1 , 2 , here is an example of how the drive component may be implemented:

[0049] The driving assembly includes a driving motor 4. The lower ends of the first rotating shaft 1 and the second rotating shaft 2 are fixedly sleeved with synchronous pulleys 402. The driving motor 4 and the two sets of synchronous pulleys 402 transmit kinetic energy through a synchronous belt 401.

[0050] Based on the above content, the drive motor 4 should be fixedly connected to the external workbench and other components and hidden in the external workbench; in order to improve the working state of the synchronous belt 401, common structures such as a tightening wheel can also be provided in the external workbench; in order to ensure that the rotation speeds of the rotating component, the loading component, and the unloading component are consistent, a common speed regulation structure can also be provided inside the external workbench.

[0051] Reference Figure 1 , 2 , 5, 6, here are examples of implementation methods of the detection component:

[0052] The detection assembly includes multiple groups of extension racks 5, which are respectively arranged on one side of the rotating assembly, the loading assembly, and the unloading assembly. The upper ends of the multiple groups of extension racks 5 are fixedly installed with components such as optical detection cameras 501 for detecting bottle preforms. Multiple groups of background plates 502 that cooperate with the optical detection cameras 501 are fixedly installed on the inner sides of the multiple groups of material picking assemblies through the extension racks 5.

[0053] Based on the above content, multiple groups of optical inspection cameras 501 are respectively used to detect the number and status of bottle preforms on the loading assembly and the unloading assembly, and the quality of bottle preforms on the picking assembly. Since the picking assembly can drive the bottle preforms to rotate, the optical inspection camera 501 only needs to be set on one side of the rotation path of the rotating assembly, and there is no need to set the optical inspection camera 501 inside the rotating assembly; the background plate 502 can reduce the recognition difficulty of the optical inspection camera 501 and avoid recognition errors caused by external structural interference; the optical inspection camera 501 can be linked with the above-mentioned push cylinder and other structures with the help of external master control computers and other equipment;

[0054] For further reference, Figure 1 The expansion rack 5 can use the existing support structure with adjustable front and rear positions and adjustable height according to usage requirements to improve the convenience of adjusting the optical detection camera 501.

[0055] Reference Figure 6-8 Here is an example of the implementation of the material taking component:

[0056] The material taking component includes a mounting base shell 3, a sliding rod 302 is slidably mounted inside the mounting base shell 3, the lower end of the sliding rod 302 extends to the lower fixed sleeve of the mounting base shell 3 and is provided with a plug-in portion 305, the upper end of the sliding rod 302 extends to the upper fixed sleeve of the mounting base shell 3 and is provided with a contact wheel 3021, the contact wheel 3021 is slidably abutted with the self-rotating belt 1041, the outer peripheral rotating sleeve of the upper end of the sliding rod 302 is provided with a connecting rod 307, one end of the connecting rod 307 is rotatably mounted with an abutment piece 3071 that is slidably abutted with the footrest 105, the lower end of the plug-in portion 305 is movably plugged with a bottle embryo, the bottle embryo includes a bottle embryo body 306, the upper end of the bottle embryo body 306 is integrally formed with a bottle embryo mouth 3061, and the bottle embryo mouth 3061 is used to cooperate with the storage groove 2011 and the conveying port 2022 and other structures to limit movement;

[0057] Based on the above, during feeding, the upper end of the preform is clamped in the storage groove 2011 of the feeding assembly through the preform opening 3061, and the sliding rod 302 and its connected structure are slidably abutted against the footrest 105 through the abutment 3071. Since the footrest 105 has a height, the sliding rod 302 located there is in an upwardly extending state. When the rotating assembly continues to rotate, the abutment 3071 is quickly inserted into the preform in the storage groove 2011 of the feeding assembly through the gravity-affected portion of the second slope. Since the rotating assembly rotates synchronously with the feeding assembly, Therefore, the preform is taken out through the docking port 2021 of the loading assembly; when unloading, the preform opening 3061 is inserted into the storage groove 2011, and at the same time, the sliding rod 302 and its connected structure slide and abut with the first slope portion 1051 on the footrest 105 through the abutment member 3071, so that the sliding rod 302 is lifted upward, and the plug-in portion 305 is separated from the preform opening 3061; in the whole working process, the horizontal height of the preform does not change, and the telescopic position of the sliding rod 302 is changed by the footrest 105 to achieve the effect of transferring the preform;

[0058] Further, the outer end surface of the mounting base shell 3 is welded with a first connecting piece 301 or a second connecting piece 3011, and the mounting base shell 3 is fixedly connected to the rotating frame 102 through the first connecting piece 301 or the second connecting piece 3011. Figure 7 , two adjacent groups of mounting base shells 3 are respectively provided with a first connecting piece 301 and a second connecting piece 3011, and the two adjacent groups of mounting base shells 3 are connected to each other through the first connecting piece 301 and the second connecting piece 3011;

[0059] Furthermore, bearings 304 are fixedly installed at the openings at the upper and lower ends of the mounting base shell 3, and the sliding rod 302 is rotatably installed on the inner side of the bearing 304. The outer end surface of the sliding rod 302 is integrally formed with a limit ring 303 that is movably abutted against the bearing 304 to control the minimum height of the sliding rod 302;

[0060] For further reference, Figure 6, multiple groups of supporting slide bars 103 are inserted and slidably connected to the outer circumference of the rotating frame 102, and one outer end of the connecting rod 307 is fixedly sleeved on the outer periphery of a group of supporting slide bars 103 through an abutment member 3071;

[0061] Furthermore, the abutment member 3071 comprises a bolt, one end of which is threadedly connected to the inside of the connecting rod 307, and the outer end of the bolt is rotatably mounted with a contact wheel to reduce friction;

[0062] Furthermore, a contact ring 3051 is sleeved on the outer periphery of the plug-in portion 305 , and the contact ring 3051 may be a rubber structure to increase the friction with the bottle embryo.

[0063] Last addition:

[0064] Sufficient redundant space should be left between the rotating assembly, the loading assembly, and the unloading assembly, that is, the plug-in portion 305 should be fully inserted into the preform opening 3061 before the preform is transported to the docking port 2021 on the loading assembly, and the plug-in portion 305 should be completely detached after the preform is transported to the docking port 2021 on the unloading assembly to prevent the preform from falling off;

[0065] The preform opening 3061 should be provided with a protrusion that cooperates with the delivery opening 2022, the storage groove 2011 and other components, so as to be clamped and supported by the above structures;

[0066] The background plate 502 may be an existing light source background plate capable of emitting light, so as to improve recognition;

[0067] An elastic member may be elastically connected between the connecting rod 307 and the rotating frame 102 to improve the effect of the sliding rod 302 moving up and down.

[0068] Based on the above-mentioned embodiments, when assembling:

[0069] Fix the rotating assembly to an external workbench and other components, fix multiple sets of material picking assemblies on the rotating frame 102 in the rotating assembly, place the loading assembly and the unloading assembly at the left and right ends of the rotating assembly, and set the docking port 2021 toward the material picking assembly, so that the material picking assembly is placed above the loading assembly and the unloading assembly, and the partial strokes of the rotating assembly, the loading assembly, and the unloading assembly overlap, and finally install functional structures such as the expansion rack 5, the optical detection camera 501, the background plate 502, and the pushing cylinder as required.

[0070] Based on the above implementation examples, when used:

[0071] The driving motor 4 is started, and the driving motor 4 drives the rotating assembly, the loading assembly, and the unloading assembly to rotate synchronously. The preforms enter through the conveying port 2022 opened by the loading assembly, and then the rotating transfer wheel 201 is taken out in sequence through the storage groove 2011. When the preforms are driven by the storage groove 2011 to approach the docking port 2021, the connecting rod 307 on the sliding rod 302 contacts the second slope portion 1052 on the footrest 105 through the abutment member 3071, so that the sliding rod 302 moves downward rapidly under the influence of gravity. At this time, the plug-in portion 305 is inserted into the preform port 3061, and the preforms are taken out from the loading assembly under the continuous driving of the driving motor 4.

[0072] The rotating assembly continues to rotate, so that the contact wheel 3021 on the material taking assembly contacts the self-rotating belt 1041, and the contact wheel 3021 drives the sliding rod 302 and the plug-in part 305 to rotate the preform along its own central axis. At this time, the optical inspection camera 501 can be used to inspect and mark the preform.

[0073] The rotating assembly continues to rotate to the intersection with the blanking assembly. At this time, the connecting rod 307 on the sliding rod 302 contacts the first slope portion 1051 on the footrest 105 through the abutment 3071, so that the sliding rod 302 is pulled upward. At this time, the plug-in portion 305 is separated from the bottle preform mouth 3061. It should be noted that when the plug-in portion 305 is completely separated, the position of the bottle preform should have passed the docking port 2021 on the blanking assembly and has abutted and slidable relationship with the limiting bracket 202.

[0074] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A preform optical inspection system, comprising a rotating assembly, a loading assembly and a unloading assembly located on both sides of the rotating assembly, a driving assembly for driving the rotating assembly, the loading assembly and the unloading assembly, and a detection assembly located between the loading assembly and the unloading assembly and cooperating with the rotating assembly, characterized in that: The rotating assembly comprises a first rotating shaft (1), a supporting frame (101) is rotatably mounted on the upper end of the first rotating shaft (1), a rotating frame (102) is fixedly mounted on the middle part of the first rotating shaft (1), a plurality of groups of material picking assemblies are fixedly mounted on the outer circumference of the rotating frame (102), a plurality of groups of belt support shafts (104) and foot platforms (105) which cooperate with the material picking assemblies are arranged in the supporting frame (101), self-rotating belts (1041) which cooperate with the material picking assemblies are fixedly mounted between the plurality of groups of belt support shafts (104), and the self-rotating belts (1041) and the foot platforms (105) are respectively used to control the self-rotation and up and down movement of the material picking assemblies.

2. The optical inspection system for preforms according to claim 1, characterized in that: The end of the foot platform (105) close to the unloading assembly is provided with a first slope portion (1051) that cooperates with the material picking assembly, and the end of the foot platform (105) close to the loading assembly is provided with a second slope portion (1052) that cooperates with the material picking assembly. The first slope portion (1051) is a gentle slope structure, and the second slope portion (1052) is a steep slope structure.

3. The optical inspection system for preforms according to claim 1, characterized in that: Both the loading assembly and the unloading assembly comprise a second rotating shaft (2), a transfer wheel (201) being fixedly mounted on the upper end of the second rotating shaft (2), a limiting bracket (202) being sleeved on the periphery of the transfer wheel (201), a plurality of groups of placement slots (2011) for placing bottle preforms being provided on the periphery of the transfer wheel (201), a docking port (2021) and a conveying port (2022) being provided on the periphery of the limiting bracket (202), a material inspection port (2023) being provided on the limiting bracket (202) on the unloading assembly between the docking port (2021) and the conveying port (2022), and a waste material slot (2024) being provided below the material inspection port (2023).

4. The optical inspection system for preforms according to claim 3, characterized in that: The storage groove (2011) is an oblique opening structure, one end of the conveying port (2022) is an arc-shaped structure and extends to the top of the storage groove (2011), and a pushing cylinder is installed at the upper end of the material inspection port (2023).

5. The preform optical inspection system according to claim 3, characterized in that: The driving assembly comprises a driving motor (4), the lower ends of the first rotating shaft (1) and the second rotating shaft (2) are fixedly sleeved with synchronous pulleys (402), and kinetic energy is transmitted between the driving motor (4) and the two sets of synchronous pulleys (402) via a synchronous belt (401).

6. The preform optical inspection system according to claim 1, characterized in that: The detection assembly comprises a plurality of expansion racks (5), the plurality of expansion racks (5) being respectively arranged on one side of the rotating assembly, the loading assembly and the unloading assembly, the upper ends of the plurality of expansion racks (5) being fixedly mounted with optical detection cameras (501) for detecting bottle preforms, and a plurality of background plates (502) cooperating with the optical detection cameras (501) being fixedly mounted on the inner sides of the plurality of material taking assemblies through the expansion racks (5).

7. The preform optical inspection system according to claim 1, characterized in that: The material picking assembly includes a mounting base shell (3), a sliding rod (302) is slidably mounted inside the mounting base shell (3), the lower end of the sliding rod (302) extends to the lower fixed sleeve of the mounting base shell (3) and is provided with a plug-in portion (305), the upper end of the sliding rod (302) extends to the upper fixed sleeve of the mounting base shell (3) and is provided with a contact wheel (3021), the contact wheel (3021) is slidably abutted against the self-rotating belt (1041), the outer rotating sleeve of the upper end of the sliding rod (302) is provided with a connecting rod (307), one end of the connecting rod (307) is rotatably mounted with an abutment member (3071) that is slidably abutted against the foot platform (105).

8. The preform optical inspection system according to claim 7, characterized in that: The outer end surface of the mounting base shell (3) is welded with a first connecting piece (301) or a second connecting piece (3011); the mounting base shell (3) is fixedly connected to the rotating frame (102) via the first connecting piece (301) or the second connecting piece (3011); two adjacent groups of the mounting base shells (3) are respectively provided with a first connecting piece (301) and a second connecting piece (3011); and the two adjacent groups of the mounting base shells (3) are connected to each other via the first connecting piece (301) and the second connecting piece (3011).

9. The preform optical inspection system according to claim 7, characterized in that: The openings at the upper and lower ends of the mounting base shell (3) are fixedly mounted with bearings (304); the sliding rod (302) is rotatably mounted on the inner side of the bearing (304); and a limiting ring (303) is integrally formed on the outer end surface of the sliding rod (302) for movably abutting against the bearing (304).

10. The preform optical inspection system according to claim 7, characterized in that: A plurality of groups of supporting slide bars (103) are slidably inserted into the outer circumference of the rotating frame (102) up and down, and an outer end of the connecting rod (307) is fixedly sleeved on the outer periphery of a group of supporting slide bars (103) through an abutment member (3071).

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