A device for classifying and conveying the front and back sides of a bottle cap and its conveying method

Abstract

The present invention discloses a device for classifying and conveying the front and back sides of a bottle cap and a conveying method thereof, including an introduction device, a transfer device is fixedly installed at the bottom end of the introduction device, and a classified transportation device is fixedly installed at one end of the transfer device. By setting the introduction device in cooperation with the transfer device, the bottle cap can enter into it in any form. The transfer device is used to adjust the posture of the overall bottle cap to achieve the purpose of regularization. And the single-in mechanism is used to make the bottle caps enter one by one in a single order, making the transportation of the overall bottle cap orderly and facilitating the subsequent classification and recognition. By setting the classified transportation device, the bottle caps entering one by one are classified and recognized, so that the separated bottle caps can be conveyed separately. And there is no need for personnel to perform manual operations beside during the whole process. Therefore, the automation degree of the overall conveying device can be greatly improved, making it not rely on manual labor, achieving the effect of improving the working efficiency of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing, and more specifically, to a device for classifying and conveying the front and back sides of bottle caps and a conveying method thereof. Background Art

[0002] A bottle cap is a very common object in life and is used on storage objects such as bottles, cups, or jars. During the production of food packaging bottles, food is placed inside the bottle, and then a rotating device is used to screw the bottle cap onto the bottle to complete the packaging. However, after the bottle caps are produced, in order to save equipment costs, many bottle caps are flipped manually, that is, the flipped bottle caps are removed manually. For an assembly line, once the personnel leave, the assembly line cannot continue production and processing. Therefore, the processing process of the overall device is too dependent on manual labor, reducing the overall degree of automation.

[0003] Therefore, in view of this, the inventor, adhering to rich design and development and actual production experience in this related industry for many years, studied and improved the existing structure and deficiencies, and provided a device for classifying and conveying the front and back sides of bottle caps and a conveying method thereof, in order to achieve the purpose of being more automatically and efficiently separated. Summary of the Invention

[0004] To overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a device for classifying and conveying the front and back sides of bottle caps. By setting an introduction device in cooperation with a transfer device, bottle caps can enter into it in any form, and the transfer device is used to adjust the posture of the overall bottle caps to achieve a regular purpose. And a single-entry mechanism is used to make the bottle caps enter one by one in a single order, making the transportation of the overall bottle caps orderly and facilitating subsequent classification and identification. By setting a classification and transportation device, the bottle caps entering one by one are classified and identified, so that the separated bottle caps can be transported separately, and there is no need for personnel to perform manual operations beside during the whole process. Therefore, the degree of automation of the overall conveying device can be greatly improved, making it independent of manual labor, achieving the effect of improving the working efficiency of the device, so as to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A device for classifying and conveying the front and back sides of bottle caps and a conveying method thereof, including an introduction device, a transfer device is fixedly installed at the bottom end of the introduction device, and a classification and transportation device is fixedly installed at one end of the transfer device;

[0006] The introduction device includes a feeding box, an installation ring is fixedly installed on the outer wall of the feeding box, an electric telescopic rod is fixedly installed on the inner wall of the installation ring, a trapezoidal block is fixedly installed at the bottom end of the electric telescopic rod, and a pressing plate is fixedly installed on the side surface of the trapezoidal block;

[0007] The transfer device includes a transfer box. A regularizing roller is rotatably installed on the top surface of the transfer box. A trapezoidal groove is formed on the top surface of the transfer box. A first conveyor belt is installed inside the transfer box in a driving manner. One end of the first conveyor belt is installed with a first drive roller frame in a driving manner. A mounting frame is fixedly installed on the side surface of the first drive roller frame. A single-in mechanism is fixedly installed inside the top end of the mounting frame. A guide plate is fixedly installed on the side surface of the single-in mechanism.

[0008] The classification and transportation device includes a second drive roller frame. A second conveyor belt is installed inside the inner wall of the second drive roller frame in a driving manner. A discrimination mechanism is fixedly installed on the top end of the second drive roller frame. A cross plate is fixedly installed on the side surface of the second drive roller frame. A baffle is fixedly installed on the top end of the cross plate.

[0009] In a preferred embodiment, the regularizing roller includes a roller body. Discharging plates are fixedly installed on the outer wall of the roller body. Limiting rings are fixedly installed on the outer surfaces of the left and right ends of the roller body. A hexagonal groove is formed at one end of the roller body.

[0010] In a preferred embodiment, the single-in mechanism includes a triangular plate. A partition plate is fixedly installed on the side surface of the triangular plate. A top plate is fixedly installed on the top end of the triangular plate. A convex column is fixedly installed on the bottom surface of the top plate. A rotating column is rotatably installed on the surface of the convex column.

[0011] In a preferred embodiment, the discrimination mechanism includes a mounting base frame. A first air cylinder and a second air cylinder are respectively fixedly installed on the top end of the mounting base frame. A right-angle plate is fixedly installed at the end of the second air cylinder. A support frame is fixedly installed on the top surface of the mounting base frame. A first photoelectric sensor and a second photoelectric sensor are respectively fixedly installed on the left and right sides of the top end of the support frame. A transition plate is fixedly installed in the middle of the mounting base frame. A roller is rotatably installed on the top surface of the transition plate. A third photoelectric sensor is fixedly installed at one end of the transition plate. A middle partition plate is integrally formed at the left end of the transition plate.

[0012] In a preferred embodiment, the inner wall of the material guiding box is of an isosceles trapezoidal structure, and a semi-circular groove is formed at its bottom end and is fixedly communicated with the top end of the transfer box through the semi-circular groove. A flattening convex block is integrally formed at the bottom end of the pressing plate.

[0013] In a preferred embodiment, the number of both the single-in mechanism and the guide plate is two and they are symmetrically distributed. Their shapes are adapted to the shape of the trapezoidal block.

[0014] In a preferred embodiment, the number of the discharge plates is six, and the outer walls thereof are all arranged as curved surface structures. The roller body is rotatably installed inside the semi-circular groove through a limiting ring. The curved surface structure can adapt to the curved side of the bottle cap, so as to further improve the high protection performance of the overall transportation and prevent the plane from causing extrusion to the bottle cap and generating deformation.

[0015] In a preferred embodiment, the number of the rotating columns is several, and several rotating columns are arranged in an oblique line. The end of the partition plate is arranged as a rounded corner structure. The left end of the triangular plate is fixedly installed on the side surface of the guide plate, and the back surface of the triangular plate is fixedly installed on the inner wall of the top end of the mounting frame. The rounded corner structure of the partition plate and the oblique line arrangement of the rotating columns are used to enable the bottle caps to enter the internal part of the classification and transportation device one by one in sequence, which is convenient for subsequent individual separation.

[0016] In a preferred embodiment, air pressure devices are fixedly connected to the ports of the first cylinder and the second cylinder. The first photoelectric sensor, the second photoelectric sensor and the third photoelectric sensor are all electrically connected to a control terminal, and the control terminal is electrically connected to the air pressure device. The right end of one side of the installation base frame is fixedly installed on the side surface of the second transmission roller frame. The bottom end of the installation base frame is located inside the second conveyor belt, and the transition plate is located in the middle of the second conveyor belt. The control terminal and the air pressure device are used to realize the hierarchical control of the cylinders, so as to achieve the purpose of discrimination. And the automatic control can make the device not rely on manual labor, thus achieving the purpose of improving the automation degree of the overall device.

[0017] In a preferred embodiment, the classification method of the above classification device is as follows: Step S1: First, power on all driving devices, and drive the whole regularizing roller to rotate by using the existing driving motor sleeved inside the hexagonal groove. Put the bottle caps to be processed into the inside of the feeding box. After the regularizing roller flips, the bottle caps all enter the inside of the transfer box in a lying posture.

[0018] The bottle caps entering the inside of the transfer box enter from the right end to the left end of the first conveyor belt in a lying posture. During this period, through the effective limiting and blocking of the single-entry mechanism, the messy bottle caps gradually enter the inside of the classification and transportation device one by one from the inside of the guide plate.

[0019] S3. The bottle cap enters the interior of the discrimination mechanism and is classified and controlled according to the variable of the height difference of the bottle cap. First, the bottle cap enters with the top of the cap facing up. The first photoelectric sensor recognizes the signal at the top of the cap body, sends a signal to the pneumatic device through the control terminal, and uses the pneumatic device to regulate the first cylinder to block it. Then, as the second conveyor belt moves, the bottle cap is recognized by the second photoelectric sensor. Similarly, the second cylinder drives the right-angle plate to push the bottle cap onto the surface of the second conveyor belt on the right, and the side of the right-angle plate blocks the next bottle cap from entering the interior of the classification and transportation device. There is no block on the second conveyor belt on the right. However, when the third photoelectric sensor recognizes that a bottle cap has passed by, the control terminal cooperates with the pneumatic device to make the first cylinder and the mounting chassis reset simultaneously. Second, if the first cylinder and the second cylinder do not receive signals, they will not respond. Therefore, the bottle caps in the two states will be automatically classified by category and sequentially sent out from the surfaces of the two second conveyor belts. Finally, connect the right end of the classification and transportation device to the subsequent processing process.

[0020] Technical effects and advantages of the present invention:

[0021] 1. By setting the import device in cooperation with the transfer device, the present invention enables the bottle cap to enter its interior in any form, uses the transfer device to adjust the posture of the overall bottle cap to achieve a regular purpose, and uses the single-entry mechanism to make the bottle caps enter sequentially one by one, making the transportation of the overall bottle cap orderly and facilitating subsequent classification and identification.

[0022] 2. By setting the classification and transportation device, the present invention classifies and identifies the bottle caps that enter one by one sequentially, enabling the separated bottle caps to be transported individually, and no personnel are required to perform manual operations beside the whole process. Therefore, the automation degree of the overall conveying device can be greatly improved, making it independent of manual labor and achieving the effect of improving the working efficiency of the device. Description of the drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the three-dimensional assembly structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the connection structure of the import device of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the transfer device of the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the regularizing roller of the present invention.

[0028] Figure 6Schematic structural diagram of the single-in mechanism of the present invention.

[0029] Figure 7 Schematic structural diagram of the classified transportation device of the present invention.

[0030] Figure 8 Schematic structural diagram of the discrimination mechanism of the present invention.

[0031] Reference numerals are: 1, feeding device; 2, transfer device; 3, classified transportation device; 11, feeding box; 12, mounting ring; 13, electric telescopic rod; 14, trapezoidal block; 15, pressing plate; 21, transfer box; 22, regularizing roller; 23, mounting frame; 24, first driving roller frame; 25, first conveyor belt; 26, single-in mechanism; 27, guide plate; 28, trapezoidal groove; 221, roller body; 222, discharging plate; 223, limiting ring; 224, hexagonal groove; 261, triangular plate; 262, partition plate; 263, top plate; 264, convex column; 265, rotating column; 31, second driving roller frame; 32, second conveyor belt; 33, discrimination mechanism; 34, cross plate; 35, baffle; 331, mounting base frame; 332, first cylinder; 333, second cylinder; 334, right-angle plate; 335, support frame; 336, first photoelectric sensor; 337, second photoelectric sensor; 338, transition plate; 3391, roller; 339, third photoelectric sensor; 3310, middle partition plate. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] As shown in the attached Figures 1-7 A cap front and back classification and conveying device, including a feeding device 1, a transfer device 2 is fixedly installed at the bottom end of the feeding device 1, and a classified transportation device 3 is fixedly installed at one end of the transfer device 2;

[0034] The feeding device 1 includes a feeding box 11, a mounting ring 12 is fixedly installed on the outer wall of the feeding box 11, an electric telescopic rod 13 is fixedly installed on the inner wall of the mounting ring 12, a trapezoidal block 14 is fixedly installed at the bottom end of the electric telescopic rod 13, and a pressing plate 15 is fixedly installed on the side surface of the trapezoidal block 14;

[0035] The transfer device 2 includes a transfer box 21. A regularizing roller 22 is rotatably installed on the top surface of the transfer box 21. A trapezoidal groove 28 is formed on the top surface of the transfer box 21. A first conveyor belt 25 is installed inside the transfer box 21 in a driving manner. One end of the first conveyor belt 25 is installed with a first drive roller frame 24 in a driving manner. An installation frame 23 is fixedly installed on the side surface of the first drive roller frame 24. A single-in mechanism 26 is fixedly installed inside the top end of the installation frame 23. A guide plate 27 is fixedly installed on the side surface of the single-in mechanism 26;

[0036] The classification and transportation device 3 includes a second drive roller frame 31. A second conveyor belt 32 is installed inside the inner wall of the second drive roller frame 31 in a driving manner. A discrimination mechanism 33 is fixedly installed at the top end of the second drive roller frame 31. A cross plate 34 is fixedly installed on the side surface of the second drive roller frame 31. A baffle 35 is fixedly installed at the top end of the cross plate 34.

[0037] Among them, as shown in the attached Figure 4 and the attached Figure 6 , the regularizing roller 22 includes a roller body 221. A discharge plate 222 is fixedly installed on the outer wall of the roller body 221. Limiting rings 223 are fixedly installed on the outer surfaces of the left and right ends of the roller body 221. A hexagonal groove 224 is formed at one end of the roller body 221. The single-in mechanism 26 includes a triangular plate 261. A partition plate 262 is fixedly installed on the side surface of the triangular plate 261. A top plate 263 is fixedly installed at the top end of the triangular plate 261. A convex column 264 is fixedly installed on the bottom surface of the top plate 263. A rotating column 265 is rotatably installed on the surface of the convex column 264. The number of the discharge plates 222 is six, and their outer walls are all set as curved surface structures. The roller body 221 is rotatably installed inside the semi-circular groove through the limiting rings 223. The curved surface structure can adapt to the curved side of the bottle cap, so as to further improve the high protection of the overall transfer and prevent the plane from causing extrusion to the bottle cap and generating deformation. The number of the rotating columns 265 is several, and several rotating columns 265 are arranged in an oblique line. The end of the partition plate 262 is set as a rounded corner structure. The left end of the triangular plate 261 is fixedly installed on the side surface of the guide plate 27. The back surface of the triangular plate 261 is fixedly installed on the inner wall of the top end of the installation frame 23. The rounded corner structure of the partition plate 262 and the oblique arrangement of the rotating columns 265 are used to enable the bottle caps to enter the classification and transportation device 3 one by one singly, which is convenient for the subsequent individual separation.

[0038] Among them, as shown in the attached Figure 7 and 8, the discrimination mechanism 33 includes a mounting chassis 331. At the top end of the mounting chassis 331, a first air cylinder 332 and a second air cylinder 333 are respectively and fixedly installed. At the end of the second air cylinder 333, a right-angle plate 334 is fixedly installed. On the top surface of the mounting chassis 331, a support frame 335 is fixedly installed. On the left and right sides at the top end of the support frame 335, a first photoelectric sensor 336 and a second photoelectric sensor 337 are respectively and fixedly installed. In the middle of the mounting chassis 331, a transition plate 338 is fixedly installed. On the top surface of the transition plate 338, a roller 3391 is rotatably installed. At one end of the transition plate 338, a third photoelectric sensor 339 is fixedly installed. At the left end of the transition plate 338, a middle partition plate 3310 is integrally formed. The ports of the first air cylinder 332 and the second air cylinder 333 are both fixedly connected to a pneumatic device. The first photoelectric sensor 336, the second photoelectric sensor 337, and the third photoelectric sensor 339 are all electrically connected to a control terminal. The control terminal is electrically connected to the pneumatic device. The right end on one side of the mounting chassis 331 is fixedly installed on the side surface of the second transmission roller frame 31. The bottom end of the mounting chassis 331 is located inside the second conveyor belt 32. The transition plate 338 is located in the middle of the second conveyor belt 32. The control terminal and the pneumatic device are used to realize the cylinder control for grading, so as to achieve the purpose of discrimination. And the automatic control can make the device not rely on manual labor, thus achieving the purpose of improving the automation degree of the overall device.

[0039] The working principle of the present invention:

[0040] S1. First, power on all driving devices, and use the existing driving motor sleeved inside the hexagonal groove 224 to drive the whole regularizing roller 22 to rotate. Put the bottle caps to be processed into the feeding box 11. After the flipping of the regularizing roller 22, the bottle caps all enter the transfer box 21 in a lying posture.

[0041] S2. The bottle caps that enter the transfer box 21 enter from one end of the first conveyor belt 25 to the other end in a lying posture. During this period, through the effective limiting and blocking of the single-in mechanism 26, the messy bottle caps gradually enter the sorting and transporting device 3 one by one from inside the guiding plate 27.

[0042] S3. The bottle cap enters the interior of the discrimination mechanism 33, and hierarchical control is carried out according to the variable of the height difference of the bottle cap. First, the bottle cap enters with the cap top facing up. The first photoelectric sensor 336 recognizes the signal at the top of the cap body, and sends a signal to the pneumatic device through the control terminal. The pneumatic device is used to regulate the first cylinder 332 to block it. Then, as the second conveyor belt 32 moves, the bottle cap is recognized by the second photoelectric sensor 337. Similarly, the second cylinder 333 drives the right-angle plate 334 to push the bottle cap onto the surface of the second conveyor belt 32 on the right, and the side of the right-angle plate 334 blocks the next bottle cap from entering the interior of the classification and transportation device 3. There is no block on the second conveyor belt 32 on the right. However, when the third photoelectric sensor 339 recognizes that a bottle cap has passed by, the control terminal cooperates with the pneumatic device to reset the first cylinder 332 and the mounting chassis 331 simultaneously. Second, if the first cylinder 332 and the second cylinder 333 do not receive signals, they will not respond. Therefore, the bottle caps in the two states will be automatically classified by category and sequentially sent out from the surfaces of the two second conveyor belts 32. Finally, connect the right end of the classification and transportation device 3 to the subsequent processing process.

Claims

1. A device for classifying and conveying the front and back sides of a bottle cap, including an introduction device (1), characterized in that, The bottom end of the import device (1) is fixedly installed with a transfer device (2), and one end of the transfer device (2) is fixedly installed with a sorting and transportation device (3); The import device (1) includes a feeding box (11), an installation ring (12) is fixedly installed on the outer wall of the feeding box (11), an electric telescopic rod (13) is fixedly installed on the inner wall of the installation ring (12), a trapezoidal block (14) is fixedly installed at the bottom end of the electric telescopic rod (13), and a pressing plate (15) is fixedly installed on the side surface of the trapezoidal block (14); The transfer device (2) includes a transfer box (21), a rectifying roller (22) is rotatably installed on the top surface of the transfer box (21), a trapezoidal groove (28) is formed on the top surface of the transfer box (21), a first conveyor belt (25) is installed inside the transfer box (21) in a transmission manner, one end of the first conveyor belt (25) is installed with a first transmission roller frame (24) in a transmission manner, an installation frame (23) is fixedly installed on the side surface of the first transmission roller frame (24), a single-in mechanism (26) is fixedly installed on the inner side of the top end of the installation frame (23), and a guide plate (27) is fixedly installed on the side surface of the single-in mechanism (26); The sorting and transportation device (3) includes a second transmission roller frame (31), a second conveyor belt (32) is installed inside the inner wall of the second transmission roller frame (31) in a transmission manner, a distinguishing mechanism (33) is fixedly installed on the top end of the second transmission roller frame (31), a cross plate (34) is fixedly installed on the side surface of the second transmission roller frame (31), and a baffle (35) is fixedly installed on the top end of the cross plate (34); The distinguishing mechanism (33) includes an installation bottom frame (331), a first air cylinder (332) and a second air cylinder (333) are respectively fixedly installed on the top end of the installation bottom frame (331), a right-angle plate (334) is fixedly installed at the end of the second air cylinder (333), a support frame (335) is fixedly installed on the top surface of the installation bottom frame (331), a first photoelectric sensor (336) and a second photoelectric sensor (337) are respectively fixedly installed on the left and right sides of the top end of the support frame (335), a transition plate (338) is fixedly installed in the middle of the installation bottom frame (331), a roller (3391) is rotatably installed on the top surface of the transition plate (338), a third photoelectric sensor (339) is fixedly installed at one end of the transition plate (338), a middle partition plate (3310) is integrally formed at the left end of the transition plate (338), the ports of the first air cylinder (332) and the second air cylinder (333) are fixedly connected with a pneumatic device, the first photoelectric sensor (336), the second photoelectric sensor (337) and the third photoelectric sensor (339) are all electrically connected with a control terminal, the control terminal is electrically connected with the pneumatic device, the right end of one side of the installation bottom frame (331) is fixedly installed on the side surface of the second transmission roller frame (31), the bottom end of the installation bottom frame (331) is located inside the second conveyor belt (32), and the transition plate (338) is located in the middle of the second conveyor belt (32).

2. The front and back classification and conveying device for bottle caps according to claim 1, wherein: The regularizing roller (22) includes a roller body (221). An inlet plate (222) is fixedly installed on the outer wall of the roller body (221). Limiting rings (223) are fixedly installed on the outer surfaces of the left and right ends of the roller body (221). A hexagonal groove (224) is formed at one end of the roller body (221).

3. The front and back side sorting and conveying device for bottle caps according to claim 1, wherein: The single-inlet mechanism (26) includes a triangular plate (261). A partition plate (262) is fixedly installed on the side surface of the triangular plate (261). A top plate (263) is fixedly installed at the top end of the triangular plate (261). A convex column (264) is fixedly installed on the bottom surface of the top plate (263). A rotating column (265) is rotatably installed on the surface of the convex column (264).

4. The front and back side classification and conveying device for bottle caps according to claim 1, characterized in that: The inner wall of the material guiding box (11) is arranged in an isosceles trapezoid structure, and a semi-circular groove is formed at its bottom end. The material guiding box (11) is fixedly and communicatively connected to the top end of the transfer box (21) through the semi-circular groove. A flattening convex block is integrally formed at the bottom end of the pressing plate (15).

5. The front and back classification conveying device for bottle caps according to claim 1, characterized in that: The number of the single-inlet mechanisms (26) and the guiding plates (27) is two and they are symmetrically distributed. The shape of the trapezoidal groove (28) is adapted to the shape of the trapezoidal block (14).

6. The front and back classification conveying device for bottle caps according to claim 2, wherein: The number of the inlet plates (222) is six, and the outer walls of the inlet plates (222) are all arranged in a curved surface structure. The roller body (221) is rotatably installed in the semi-circular groove through the limiting rings (223).

7. The front and back side classification and conveying device for bottle caps according to claim 3, wherein: The number of the rotating columns (265) is several, and several rotating columns (265) are arranged in an oblique line. The end of the partition plate (262) is arranged in a rounded corner structure. The left end of the triangular plate (261) is fixedly installed on the side surface of the guiding plate (27). The back surface of the triangular plate (261) is fixedly installed on the inner wall of the top end of the mounting frame (23).

8. The conveying method of the front and back classification conveying device for bottle caps according to any one of claims 1-7, characterized in that: Including the following steps: S1. First, power on all driving devices, and use an existing driving motor to be sleeved inside the hexagonal groove (224) to drive the entire regularizing roller (22) to rotate. Put the bottle caps to be processed into the material guiding box (11). After being flipped by the regularizing roller (22), the bottle caps all enter the transfer box (21) in a lying posture. S2. For the bottle caps entering the transfer box (21), they enter from the right end to the left end of the first conveyor belt (25) in a lying posture. During this process, through the effective limiting and blocking of the single-inlet mechanism (26), the messy bottle caps gradually enter the internal sorting and transportation device (3) one by one from inside the guiding plate (27). S3. The bottle cap enters the interior of the discrimination mechanism (33), and hierarchical control is carried out according to the variable of the height difference of the bottle cap. First, when the bottle cap enters with the top of the cap facing up, the first photoelectric sensor (336) recognizes the signal at the top of the cap body, and a signal is sent to the pneumatic device through the control terminal. The pneumatic device is used to regulate the first cylinder (332) to block it. Then, as the second conveyor belt (32) moves, the bottle cap is recognized by the second photoelectric sensor (337). Similarly, the second cylinder (333) drives the right-angle plate (334) to push the bottle cap onto the surface of the second conveyor belt (32) on the right, and the side of the right-angle plate (334) blocks the next bottle cap from entering the interior of the classification and transportation device (3). There is no block on the second conveyor belt (32) on the right, but when the third photoelectric sensor (339) recognizes that a bottle cap has passed by, the control terminal cooperates with the pneumatic device to make the first cylinder (332) and the mounting chassis (331) reset simultaneously. Second, if the first cylinder (332) and the second cylinder (333) do not receive signals, they will not respond. Therefore, the bottle caps in the two states will be automatically classified by category and sequentially sent out from the surfaces of the two second conveyor belts (32). Finally, connect the right end of the classification and transportation device (3) to the subsequent processing process.

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