Conveying mechanism and bottle cap detection equipment

Abstract

The invention discloses a conveying mechanism and bottle cap detection equipment. The conveying mechanism comprises a rack; the material receiving part is arranged on the rack, the material receiving part is used for being in butt joint with the discharging end of an external feeding mechanism so as to receive bottle caps fed by the discharging end of the external feeding mechanism, and the material receiving part is provided with an air blowing opening used for blowing air to the bottoms of the bottle caps received by the material receiving part; the upper-layer negative-pressure conveying belt assembly is arranged on the rack and extends in the feeding direction, the upper-layer negative-pressure conveying belt assembly and the material receiving part are arranged in an up-down staggered mode, and the end, close to the material receiving part, of the upper-layer negative-pressure conveying belt assembly is located over the material receiving part; the upper-layer negative pressure conveying belt assembly is used for adsorbing the bottle caps received by the material receiving part and conveying the adsorbed bottle caps in the feeding direction; wherein the material receiving part is provided with a part extending from the air blowing opening in the feeding direction, the part is provided with a plurality of air blowing holes distributed in the feeding direction, and the air blowing holes are used for blowing air upwards. By means of the structure, the situation that bottle caps conveyed by the upper-layer negative pressure conveying belt assembly fall off is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of bottle cap detection, and in particular to a conveying mechanism and a bottle cap detection device. Background Art

[0002] Bottle caps are a common filling accessory, used to seal the filling ports of filling containers (glass bottles, plastic bottles, etc. filled with liquids). Before assembling the bottle caps at the filling ports of the filling containers, the bottle caps need to be inspected to ensure that the bottle caps entering the assembly process meet the requirements in terms of appearance, size, printing, labeling, etc.

[0003] In the prior art, in order to detect the bottom area of ​​the bottle caps in the conveying state, it is necessary to cooperate in feeding through the upper layer negative pressure conveyor belt assembly and the lower layer negative pressure conveyor belt assembly that are partially overlapped and staggered up and down, wherein the upper layer negative pressure conveyor belt assembly absorbs the bottle caps conveyed by the lower layer negative pressure conveyor belt assembly by vacuum adsorption and continues to convey the absorbed bottle caps, so that the bottom area of ​​the bottle caps is exposed, so that the bottom area of ​​the bottle caps can be detected in conjunction with the visual inspection technology. However, in the above-mentioned feeding process, the upper layer negative pressure conveyor belt assembly only relies on its own vacuum adsorption force to absorb the bottle caps conveyed by the lower layer negative pressure conveyor belt assembly, so that the response speed of the bottle caps being transferred from the lower layer negative pressure conveyor belt assembly to the upper layer negative pressure conveyor belt assembly is slow, and it is difficult for the upper layer negative pressure conveyor belt assembly to stably absorb the bottle caps conveyed by the lower layer negative pressure conveyor belt assembly.

[0004] To this end, the related art proposes blowing air to the bottom of the bottle cap to assist the bottle cap to be transferred to the upper negative pressure conveyor belt assembly, so as to improve the response speed of the bottle cap to be transferred to the upper negative pressure conveyor belt assembly, and at the same time facilitate the upper negative pressure conveyor belt assembly to suck up the bottle cap more stably. However, when blowing air to the bottom of the bottle cap to assist the bottle cap to be transferred to the upper negative pressure conveyor belt assembly, the airflow will be scattered when it encounters the bottom of the bottle cap and form a certain impact on the surroundings, and the conveying area where the upper negative pressure conveyor belt assembly has already absorbed the bottle cap and is close to the transfer position (i.e., the position where the bottle cap is sucked up) will be impacted by the scattered airflow, causing the conveyed bottle cap to fall in the conveying area. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a conveying mechanism, which is conducive to reducing the situation where bottle caps conveyed by the upper negative pressure conveyor belt assembly fall off.

[0006] The present application also proposes a bottle cap detection device having the above-mentioned conveying mechanism.

[0007] The conveying mechanism according to the first aspect embodiment of the present application includes: a frame; a material receiving part, which is arranged on the frame, and the material receiving part is used to dock with the discharge end of the external feeding mechanism to receive the bottle caps fed by the discharge end of the external feeding mechanism, and the material receiving part is provided with a blowing port for blowing air to the bottom of the bottle caps received by the material receiving part; an upper negative pressure conveyor belt assembly, which is arranged on the frame and extends along the feeding direction, and the upper negative pressure conveyor belt assembly is staggered with the material receiving part up and down, and one end of the upper negative pressure conveyor belt assembly close to the material receiving part is located directly above the material receiving part, and the upper negative pressure conveyor belt assembly is used to absorb the bottle caps received by the material receiving part and convey the absorbed bottle caps along the feeding direction; wherein the material receiving part has a portion extending from the blowing port along the feeding direction, and the portion is provided with a plurality of blowing holes distributed along the feeding direction, and the blowing holes are used for blowing air upwards.

[0008] According to the conveying mechanism of the embodiment of the present application, there are at least the following beneficial effects: when in use, the bottle caps fed by the discharge end of the external feeding mechanism are received by the receiving portion, and because one end of the upper negative pressure conveyor belt assembly close to the receiving portion is located directly above the receiving portion, the upper negative pressure conveyor belt assembly can absorb the bottle caps received by the receiving portion and convey the absorbed bottle caps along the feeding direction, so that the bottom area of ​​the bottle caps is exposed, so that the bottom area of ​​the bottle caps can be detected in conjunction with the visual inspection technology. Among them, the receiving portion is provided with a blowing port for blowing air toward the bottom of the bottle caps received by the receiving portion, and while the upper negative pressure conveyor belt assembly absorbs the bottle caps received by the receiving portion, it blows air toward the bottom of the bottle caps received by the receiving portion through the blowing port, so as to assist the bottle caps to break away from the support of the receiving portion and be absorbed by the upper negative pressure conveyor belt assembly. Furthermore, the receiving part has a portion extending from the blowing port along the feeding direction, and the portion is provided with a plurality of blowing holes distributed along the feeding direction, and the blowing holes are used to blow air upwards, and the airflow blown upwards from the blowing holes can mitigate the impact formed after the airflow blown out of the blowing port is dispersed, and at the same time can provide a certain supporting force for the bottle caps transported by the conveying area where the upper negative pressure conveyor belt assembly has already absorbed the bottle caps and is close to the transfer position. The above structure is conducive to reducing the situation where the bottle caps transported by the upper negative pressure conveyor belt assembly fall off.

[0009] According to some embodiments of the present application, a positive pressure chamber is provided inside the material receiving part, and a constant pressure valve is provided in the positive pressure chamber to separate the positive pressure chamber into a first chamber and a second chamber which are interconnected, the first chamber is used to be connected to a positive pressure gas source, the constant pressure valve is used to maintain the pressure in the second chamber, the blowing port is connected to the first chamber, and the blowing hole is connected to the second chamber.

[0010] According to some embodiments of the present application, the constant pressure valve has a rotatable operating portion exposed to the outside of the material receiving portion, and the operating portion is used to adjust a preset pressure that the constant pressure valve needs to maintain.

[0011] According to some embodiments of the present application, the material receiving portion is provided with a limiting groove extending along the feeding direction and used to accommodate the bottle cap, the end of the limiting groove is an open structure, and the blowing port is located at the bottom of the limiting groove.

[0012] According to some embodiments of the present application, the conveying mechanism also includes a cap separating device, which includes two rotating wheels for clamping bottle caps and driving the clamped bottle caps to feed, the two rotating wheels are respectively arranged on both sides of the material receiving part, and the frame is provided with a first driving motor for driving the rotating wheels to rotate.

[0013] According to some embodiments of the present application, the conveying mechanism further includes a collecting hopper with an upward opening, the collecting hopper is arranged directly below the upper negative pressure conveyor belt assembly, and the collecting hopper is used to recover fallen bottle caps.

[0014] According to some embodiments of the present application, the upper negative pressure conveyor belt assembly includes a first bracket, a second drive motor, a roller and an endless conveyor belt, the first bracket is arranged on the frame and extends along the feeding direction, the rollers are arranged at both ends of the first bracket, the endless conveyor belt is wound around the outside of the first bracket, the second drive motor is arranged on the first bracket and is used to drive the endless conveyor belt to move, the interior of the first bracket is provided with a negative pressure chamber for connecting to a negative pressure gas source, and the endless conveyor belt is provided with adsorption holes that can be connected to the negative pressure chamber and used to adsorb bottle caps.

[0015] According to some embodiments of the present application, a height adjustment structure is provided on the frame corresponding to the upper negative pressure conveyor belt assembly, and the height adjustment structure is used to adjust the height of the upper negative pressure conveyor belt assembly.

[0016] According to some embodiments of the present application, the height adjustment structure includes a second bracket, a movable connecting piece, a screw assembly and a driving piece, the second bracket is arranged on the frame, the movable connecting piece is connected to the second bracket movably up and down and is connected to the first bracket, the screw assembly is arranged between the second bracket and the movable connecting piece, and the driving piece is connected to the screw assembly and is used to drive the movable connecting piece to move up and down relative to the second bracket.

[0017] According to the bottle cap detection device of the second aspect embodiment of the present application, it includes the conveying mechanism according to the above-mentioned first aspect embodiment of the present application.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a structural schematic diagram of a bottle cap detection device according to an embodiment of the present application;

[0021] Figure 2 It is a partial structural schematic diagram of a material receiving portion in a bottle cap detection device according to an embodiment of the present application;

[0022] Figure 3 yes Figure 2 A partial enlarged schematic diagram in the middle;

[0023] Figure 4 yes Figure 2 A schematic cross-sectional view of the structure shown;

[0024] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure 6 It is a schematic diagram of the state of the bottle caps being transferred between the material receiving part and the upper negative pressure conveyor belt assembly in the bottle cap detection device of one embodiment of the present application;

[0026] Figure 7 It is a partial structural schematic diagram of a conveying mechanism in a bottle cap detection device according to an embodiment of the present application;

[0027] Figure 8 This is a schematic structural diagram of an upper negative pressure conveyor belt assembly according to an embodiment of the present application;

[0028] Fig. 9 yes Figure 8 A schematic cross-sectional view of the structure shown;

[0029] Fig.10 yes Fig. 9 A partial enlarged schematic diagram of point C in the middle.

[0030] Reference numerals:

[0031] Bottle cap a, frame 100, material receiving part 200, blowing port 210, blowing hole 220, constant pressure valve 230, operating part 231, first chamber 240, second chamber 250, limiting groove 260, upper negative pressure conveyor belt assembly 300, first bracket 310, negative pressure chamber 311, second drive motor 320, roller 330, endless conveyor belt 340, adsorption hole 341, rotating wheel 410, first drive motor 420, collecting hopper 500, second bracket 610, guide column 611, movable connecting part 620, guide sleeve 621, screw rod assembly 630, drive part 640. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0033] In the description of the present application, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0034] In the description of this application, if the words "some", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "some" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number, and "above", "below", "within", etc. are understood to include the number.

[0035] In the description of this application, if the words "first", "second", etc. appear, they are only used to distinguish technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0037] Reference Figures 1 to 10 According to the embodiment of the present application, the conveying mechanism includes a frame 100, a material receiving portion 200 and an upper negative pressure conveyor belt assembly 300.

[0038] Specifically, the receiving portion 200 is arranged on the frame 100, and the receiving portion 200 is used to dock with the discharge end of the external feeding mechanism to receive the bottle cap a fed by the discharge end of the external feeding mechanism. The receiving portion 200 is provided with a blowing port 210 for connecting with a positive pressure air source and blowing air to the bottom of the bottle cap a received by the receiving portion 200. The upper negative pressure conveyor belt assembly 300 is arranged on the frame 100 and extends along the feeding direction. The upper negative pressure conveyor belt assembly 300 is offset from the receiving portion 200 up and down. The upper negative pressure conveyor belt assembly 300 is arranged such that one end thereof close to the receiving portion 200 is located directly above the receiving portion 200, and the upper negative pressure conveyor belt assembly 300 is used for adsorbing the bottle caps a received by the receiving portion 200 and conveying the adsorbed bottle caps a along the feeding direction, wherein the receiving portion 200 has a portion extending along the feeding direction from the air blowing port 210, and the portion is provided with a plurality of air blowing holes 220 which are connected to a positive pressure air source and are spaced apart along the feeding direction, and the air blowing holes 220 are used for blowing air upwards.

[0039] It should be noted that the above-mentioned feeding direction is the X direction in the drawings.

[0040] When in use, the bottle cap a fed by the discharge end of the external feeding mechanism is received by the receiving portion 200. Since one end of the upper negative pressure conveyor belt assembly 300 close to the receiving portion 200 is located directly above the receiving portion 200, the upper negative pressure conveyor belt assembly 300 can absorb the bottle cap a received by the receiving portion 200 and convey the absorbed bottle cap a along the feeding direction, so that the bottom area of ​​the bottle cap a is exposed, so that the bottom area of ​​the bottle cap a can be detected in conjunction with the visual inspection technology. Among them, the receiving portion 200 is provided with a blowing port 210 for connecting to a positive pressure air source and blowing air to the bottom of the bottle cap a received by the receiving portion 200. When the upper negative pressure conveyor belt assembly 300 absorbs the bottle cap a received by the receiving portion 200, the positive pressure air source blows air to the bottom of the bottle cap a received by the receiving portion 200 through the blowing port 210, so as to assist the bottle cap a to be separated from the support of the receiving portion 200 and be absorbed by the upper negative pressure conveyor belt assembly 300. Furthermore, the material receiving part 200 has a portion extending from the air blowing port 210 along the feeding direction, and the portion is provided with a plurality of air blowing holes 220 for connecting to a positive pressure air source and spaced apart along the feeding direction, and the air blowing holes 220 are used to blow air upwards, and the air flow blown upwards from the air blowing holes 220 can mitigate the impact formed after the air flow blown out from the air blowing port 210 is dispersed, and at the same time can provide a certain supporting force for the bottle cap a transported by the upper negative pressure conveyor belt assembly 300, which has already absorbed the bottle cap a and is close to the transporting position (i.e., the position where the bottle cap a is sucked up). The above structure is conducive to reducing the situation where the bottle cap a transported by the upper negative pressure conveyor belt assembly 300 falls off.

[0041] Specifically, the diameter of the blowing hole 220 is smaller than the diameter of the blowing port 210 .

[0042] Reference Figures 4 to 6 In some embodiments, a positive pressure chamber is provided inside the material receiving portion 200, and a constant pressure valve 230 is provided inside the positive pressure chamber to separate the positive pressure chamber into a first chamber 240 and a second chamber 250 which are interconnected. The first chamber 240 is used to be connected to a positive pressure gas source, and the constant pressure valve 230 is used to maintain the pressure inside the second chamber 250. The air blowing port 210 is connected to the first chamber 240, and the air blowing hole 220 is connected to the second chamber 250. When in use, the same positive pressure gas source can be used to supply air to the air blowing port 210 and the air blowing hole 220 at the same time. Among them, the constant pressure valve 230 is used to maintain the pressure inside the second chamber 250, so that the air blowing hole 220 can stably provide a suitable airflow for assisting in supporting the bottle caps a conveyed by the upper negative pressure conveyor belt assembly 300.

[0043] Reference Figure 2 and Figure 3 In some of the embodiments, the constant pressure valve 230 has a rotatable operating part 231 exposed to the outside of the material receiving part 200, and the operating part 231 is used to adjust the preset pressure that the constant pressure valve 230 needs to maintain. Since the operating part 231 is exposed to the outside of the material receiving part 200, when it is necessary to adjust the preset pressure that the constant pressure valve 230 needs to maintain, the constant pressure valve 230 does not need to be removed from the inside of the positive pressure chamber to perform the adjustment operation, which helps to reduce the difficulty of adjustment.

[0044] Specifically, the constant pressure valve 230 automatically adjusts the pressure in the second chamber 250 by using a diaphragm and a compression spring, so that the pressure in the second chamber 250 is stabilized at a preset pressure value, and the rotating operating part 231 can adjust the initial compression amount of the compression spring of the constant pressure valve 230 to adjust the preset pressure that the constant pressure valve 230 needs to maintain. Among them, the constant pressure valve is a well-known technology, and its specific structure and working principle are not described in detail here.

[0045] Reference Figures 2 to 5 In some embodiments, the receiving portion 200 is provided with a limiting groove 260 extending along the feeding direction and used to accommodate the bottle cap a, which is beneficial to prevent the bottle cap a received by the receiving portion 200 from falling, wherein the end of the limiting groove 260 is an open structure to facilitate receiving the bottle cap a fed by the discharge end of the external feeding mechanism, and the blowing port 210 is located at the bottom of the limiting groove 260 to facilitate blowing toward the bottom of the bottle cap a received by the receiving portion 200.

[0046] Reference Figure 2 , Figure 4 and Figure 7In some embodiments, the conveying mechanism further includes a capping device, which includes two rotating wheels 410 for clamping the bottle cap a and driving the clamped bottle cap a to feed, the two rotating wheels 410 are respectively arranged on both sides of the material receiving portion 200, and the frame 100 is provided with a first driving motor 420 for driving the rotating wheels 410 to rotate. When in use, the rotation speed of the first driving motor 420 is set so that the feeding speed of the bottle cap a clamped by the two rotating wheels 410 is less than the conveying speed of the upper negative pressure conveyor belt assembly 300, so that the bottle cap a that has been separated from the clamping of the rotating wheels 410 and is continuously conveyed by the upper negative pressure conveyor belt assembly 300 can be pulled away from the bottle cap a clamped by the two rotating wheels 410, so as to realize the function of capping.

[0047] By adjusting the rotation speed of the first driving motor 420, the distance between two adjacent bottle caps a can be changed to meet different feeding requirements.

[0048] Reference Figure 1 and Figure 7 In some embodiments, the conveying mechanism further includes a collecting hopper 500 with an upward opening, which is arranged directly below the upper negative pressure conveyor belt assembly 300, and the collecting hopper 500 is used to recover the fallen bottle caps a. When the bottle caps a conveyed by the upper negative pressure conveyor belt assembly 300 accidentally fall, they can be recovered by the collecting hopper 500.

[0049] Reference Figures 8 to 10 In some embodiments thereof, the upper negative pressure conveyor belt assembly 300 includes a first bracket 310, a second drive motor 320, a roller 330 and an endless conveyor belt 340. The first bracket 310 is arranged on the frame 100 and extends along the feeding direction. Rollers 330 are arranged at both ends of the first bracket 310. The endless conveyor belt 340 is wound around the outside of the first bracket 310. The second drive motor 320 is arranged on the first bracket 310 and is used to drive the endless conveyor belt 340 to move. A negative pressure chamber 311 for connecting to a negative pressure gas source is arranged inside the first bracket 310. The endless conveyor belt 340 is provided with an adsorption hole 341 that can be connected to the negative pressure chamber 311 and is used to adsorb bottle caps a. The structure is simple and easy to implement.

[0050] It should be noted that, in some embodiments, the output shaft of the second driving motor 320 is connected to one of the rollers 330 to drive the roller 330 to rotate, thereby driving the endless conveyor belt 340 to move.

[0051] It should be noted that in some other embodiments, a tensioning assembly is provided on the first bracket 310, and the tensioning assembly includes multiple tensioning rollers. The output shaft of the second drive motor 320 is connected to one of the tensioning rollers to drive the tensioning roller to rotate, and the annular conveyor belt 340 is wound around the tensioning roller so that the annular conveyor belt 340 can be driven to move when the tensioning roller rotates.

[0052] It should be noted that, in some of the embodiments, a height adjustment structure is provided on the frame 100 corresponding to the upper negative pressure conveyor belt assembly 300, and the height adjustment structure is used to adjust the height of the upper negative pressure conveyor belt assembly 300, so as to adapt to bottle caps a of different heights.

[0053] Reference Figure 1 and Figure 7 In some embodiments, the height adjustment structure includes a second bracket 610, a movable connecting member 620, a screw assembly 630 and a driving member 640. The second bracket 610 is arranged on the frame 100. The movable connecting member 620 is connected to the second bracket 610 and can be moved up and down and is connected to the first bracket 310. The screw assembly 630 is arranged between the second bracket 610 and the movable connecting member 620. The driving member 640 is connected to the screw assembly 630 and is used to drive the movable connecting member 620 to move up and down relative to the second bracket 610. Its structure is simple and easy to implement.

[0054] It should be noted that in some embodiments, at least two guide posts 611 are spaced apart on the second bracket 610 , and a guide sleeve 621 passing through the guide posts 611 is provided on the movable connecting member 620 , so that the movable connecting member 620 can move up and down relative to the second bracket 610 .

[0055] It should be noted that, in some other embodiments, guide grooves are arranged at intervals on the second bracket 610 , and a slider slidably connected to the guide grooves is arranged on the movable connecting member 620 , so that the movable connecting member 620 can move up and down relative to the second bracket 610 .

[0056] It should be noted that, in some of the embodiments, the nut of the screw assembly 630 is fixedly set on the second bracket 610, and the screw of the screw assembly 630 is connected to the movable connecting member 620. At this time, when the driving member 640 drives the screw of the screw assembly 630 to rotate, the nut of the screw assembly 630 is fixed to drive the screw of the screw assembly 630 to move up and down, thereby driving the movable connecting member 620 to move up and down relative to the second bracket 610, and then driving the first bracket 310 to move up and down relative to the second bracket 610 to adjust the height of the upper negative pressure conveyor belt assembly 300.

[0057] It should be noted that, in some other embodiments, the nut of the screw assembly 630 is fixedly arranged on the movable connecting member 620, and the screw of the screw assembly 630 is rotatably arranged between the second bracket 610 and the frame 100. At this time, when the driving member 640 drives the screw of the screw assembly 630 to rotate, the screw of the screw assembly 630 can only rotate to drive the nut of the screw assembly 630 to move up and down, thereby driving the movable connecting member 620 to move up and down relative to the second bracket 610, and then driving the first bracket 310 to move up and down relative to the second bracket 610 to adjust the height of the upper negative pressure conveyor belt assembly 300.

[0058] Specifically, the driving member 640 is a hand wheel. Of course, the driving member 640 may also be a motor, which is not limited here.

[0059] It should be noted that, in some other embodiments, the height of the upper negative pressure conveyor belt assembly 300 may also be adjusted by a linear drive structure such as an electric push rod, a pneumatic cylinder, or an oil cylinder, which is not limited here.

[0060] The bottle cap detection device according to the embodiment of the present application includes the above-mentioned conveying mechanism.

[0061] It can be understood that, since the bottle cap detection device of the embodiment of the present application includes the above-mentioned conveying mechanism, the bottle cap detection device of the embodiment of the present application has all the technical effects of the above-mentioned conveying mechanism.

[0062] In the description of this specification, if the description involves reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" and "some examples", it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0063] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A conveying mechanism, characterized in that: include: frame; A receiving portion is arranged on the frame, the receiving portion is used to dock with the discharge end of the external feeding mechanism to receive the bottle caps fed by the discharge end of the external feeding mechanism, and the receiving portion is provided with a blowing port for blowing air toward the bottom of the bottle caps received by the receiving portion; An upper negative pressure conveyor belt assembly is arranged on the frame and extends along the feeding direction. The upper negative pressure conveyor belt assembly and the material receiving portion are arranged in an offset manner up and down. One end of the upper negative pressure conveyor belt assembly close to the material receiving portion is located directly above the material receiving portion. The upper negative pressure conveyor belt assembly is used to absorb the bottle caps received by the material receiving portion and convey the absorbed bottle caps along the feeding direction. Wherein, the material receiving portion has a portion extending from the blowing port along the feeding direction, and the portion is provided with a plurality of blowing holes distributed along the feeding direction, and the blowing holes are used for blowing air upwards.

2. The conveying mechanism according to claim 1, characterized in that: A positive pressure chamber is provided inside the material receiving part, and a constant pressure valve is provided in the positive pressure chamber to separate the positive pressure chamber into a first chamber and a second chamber which are connected to each other. The first chamber is used to be connected to a positive pressure gas source, and the constant pressure valve is used to maintain the pressure in the second chamber. The air port is connected to the first chamber, and the air hole is connected to the second chamber.

3. The conveying mechanism according to claim 2, characterized in that: The constant pressure valve has a rotatable operating portion exposed to the outside of the material receiving portion, and the operating portion is used to adjust a preset pressure that the constant pressure valve needs to maintain.

4. The conveying mechanism according to claim 1, characterized in that: The material receiving portion is provided with a limiting groove extending along the feeding direction and used for accommodating the bottle cap, the end of the limiting groove is an open structure, and the blowing port is located at the bottom of the limiting groove.

5. The conveying mechanism according to claim 1, characterized in that: The conveying mechanism also includes a cap separating device, which includes two rotating wheels for clamping bottle caps and driving the clamped bottle caps to feed, the two rotating wheels are respectively arranged on both sides of the material receiving part, and the frame is provided with a first driving motor for driving the rotating wheels to rotate.

6. The conveying mechanism according to claim 1, characterized in that: The conveying mechanism also includes a collecting hopper with an upward opening, which is arranged directly below the upper negative pressure conveyor belt assembly and is used to recover fallen bottle caps.

7. The conveying mechanism according to claim 1, characterized in that: The upper negative pressure conveyor belt assembly includes a first bracket, a second drive motor, a roller and an endless conveyor belt. The first bracket is arranged on the frame and extends along the feeding direction. The rollers are arranged at both ends of the first bracket. The endless conveyor belt is wound around the outside of the first bracket. The second drive motor is arranged on the first bracket and is used to drive the endless conveyor belt to move. A negative pressure chamber connected to a negative pressure gas source is arranged inside the first bracket, and adsorption holes that can be connected to the negative pressure chamber and used to adsorb bottle caps are arranged on the endless conveyor belt.

8. The conveying mechanism according to claim 7, characterized in that: A height adjustment structure is provided on the frame corresponding to the upper negative pressure conveyor belt assembly, and the height adjustment structure is used to adjust the height of the upper negative pressure conveyor belt assembly.

9. The conveying mechanism according to claim 8, characterized in that: The height adjustment structure includes a second bracket, a movable connecting piece, a screw assembly and a driving piece, the second bracket is arranged on the frame, the movable connecting piece is connected to the second bracket and is connected to the first bracket so as to be movable up and down, the screw assembly is arranged between the second bracket and the movable connecting piece, and the driving piece is connected to the screw assembly and is used to drive the movable connecting piece to move up and down relative to the second bracket.

10. A bottle cap detection device, characterized in that: Comprising the conveying mechanism according to any one of claims 1 to 9.

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