Formaldehyde packaging equipment with protection function and method

Abstract

The invention relates to the field of packaging equipment, in particular to formaldehyde packaging equipment with a protection function and a method. The formaldehyde packaging equipment comprises a mounting table; the device further comprises a rotary driving piece. A rotary driving part is mounted on the mounting table; a connecting seat is mounted at the driving end of the rotary driving part; the two ends of the connecting base are each provided with a first telescopic driving piece. The driving end of each first telescopic driving piece is provided with a carrying frame. Each object carrying frame is internally provided with a movable driving piece. A push plate is mounted at the driving end of each movable driving part, and the push plates are controlled by the movable driving parts to move in the object carrying frame; the loading frame is provided with a feeding hole; by designing the two object carrying frames which are alternately used, continuous boxing of the plastic bottles is achieved; and by designing an inclined buffer plate, the plastic bottles are buffered and protected, and every two adjacent rows of plastic bottles are separated and protected.

Description

Technical Field

[0001] The present invention relates to the field of packaging equipment, and in particular, to a formaldehyde packaging equipment and method with a protection function. Background Art

[0002] Formaldehyde is an organic chemical substance, and the raw material generally exists in a liquid form and is transported and packaged by a semi-automatic packaging machine. When used in small doses, formaldehyde is usually packaged in 500 ml plastic bottles, and the plastic bottles filled with formaldehyde are loaded into a packing box in a rectangular array distribution state. However, the existing packaging and boxing equipment has imperfect functions.

[0003] For example, Chinese Patent CN119284269A discloses an automatic boxing equipment for bottled pesticides, which accurately drops the bottled pesticides into the designated positions in the box in sequence through a positioning cylinder, so that people do not need to arrange them outside the box and then box them. However, the boxing and packaging equipment still has the following defects: 1. Although the packaging equipment does not need to arrange and box outside the box, during the process of putting the bottles into the box through the positioning cylinder, the subsequent transported bottles need to wait, and when the bottles are put in, they need to fall slowly to prevent damage, resulting in a long overall packaging time and poor efficiency.

[0004] 2. Although the packaging equipment is provided with a buffer device, the buffer area is in the upper half of the path where the bottles fall, and there is still a risk of collision in the lower half of the path. Moreover, when the bottles loaded in the back row fall, they will collide with the bottles falling in the front row, further increasing the risk of damage. Summary of the Invention

[0005] In order to overcome the defects that the existing packaging equipment has imperfect functions, not only the boxing time is long, but also the risk of damage to plastic bottles is large, the present invention provides a formaldehyde packaging equipment and method with a protection function.

[0006] The technical solution of the present invention is: A formaldehyde packaging equipment with a protection function, including an installation table; further including a rotary driving member; the rotary driving member is installed on the installation table; a connecting seat is installed at the driving end of the rotary driving member; a telescopic driving member I is installed at each end of the connecting seat; a loading frame is installed at the driving end of each telescopic driving member I; a switch assembly is respectively arranged at the bottom opening of each loading frame, and when the switch assembly is opened, the plastic bottle drops; a moving driving member is installed in each loading frame; a push plate is installed at the driving end of each moving driving member, and the push plate is controlled to move in the loading frame through the moving driving member; the loading frame has a feeding port, and the plastic bottles filled with formaldehyde are sent into the loading frame one by one from the feeding port through an external conveyor belt, and the plastic bottles are arranged by moving the push plate.

[0007] Furthermore, the switch assembly is composed of a supporting plate and a second telescopic driving member; a supporting plate is slidably arranged at the bottom opening of each loading frame; a number of second telescopic driving members are installed on each loading frame; the driving ends of all the second telescopic driving members on each loading frame are jointly connected to the supporting plate on that loading frame; the supporting plate is driven to move by the second telescopic driving member, so that the bottom opening of the loading frame is opened and the plastic bottles fall down.

[0008] Furthermore, one end of each push plate close to the feeding port is provided with a bending part inclined towards the side of pushing the plastic bottles.

[0009] Furthermore, a guiding plate is installed on the inner side wall of each loading frame; the side of the guiding plate facing the feeding port is of a bevel structure; a groove is formed in the inner side wall of each loading frame, and each groove is opposite to one guiding plate.

[0010] Furthermore, the moving driving member is composed of an electric slide rail and an electric slider. The electric slide rail is embedded and installed on the side wall of the loading frame, and the electric slider is connected to the push plate, and the push plate is driven to move by the electric slider.

[0011] Furthermore, a connecting frame is installed on one side of the mounting table; a placing table with an inclined upper surface is installed on the connecting frame; the high end of the inclined surface of the placing table faces the mounting table, and a limiting plate is installed at the low end of the inclined surface of the placing table.

[0012] Furthermore, a third telescopic driving member is installed at the upper end of the connecting frame; a moving plate is installed at the driving end of the third telescopic driving member; two fourth telescopic driving members are installed on the side of the moving plate away from the third telescopic driving member; a buffer plate is jointly installed at the driving ends of the two fourth telescopic driving members. A rubber layer is arranged on the side of the buffer plate facing the mounting table. The buffer plate is located above the placing table. The buffer plate and the fourth telescopic driving member are in an inclined shape parallel to each other, and the buffer plate is perpendicular to the upper inclined surface of the placing table.

[0013] Furthermore, arc-shaped guiding grooves are formed in the rubber layer of the buffer plate, and the number of the guiding grooves is the same as the number of plastic bottles loaded in the loading frame.

[0014] Furthermore, an inclined surface is arranged at the lower end of the side of the buffer plate facing away from the mounting table.

[0015] A formaldehyde packaging method with a protection function includes the following steps: Step 1: Convey plastic bottles filled with formaldehyde into one of the loading frames through an external conveyor belt, and cooperate with the movement of the push plate to arrange the plastic bottles in the loading frame; Step 2: Control the rotation drive to drive the connecting seat and the parts thereon to rotate 180 degrees, so that the two loading frames exchange positions, making the empty loading frame face the external conveyor belt, and the loading frame loaded with plastic bottles face the packaging box, enabling the two loading frames to be used continuously; Step 3: Move the buffer plate to the falling path of the plastic bottles to buffer and protect the falling plastic bottles, reducing the collision damage during the fall of the plastic bottles.

[0016] The beneficial effects of the present invention are as follows: By designing two alternately used loading frames, the present invention realizes the continuous boxing of plastic bottles, reduces the waiting time for plastic bottle transmission, and pre-arranges the plastic bottles and boxes them in rows, improving the packaging efficiency.

[0017] The present invention realizes the limiting function of the plastic bottles in the loading frame by designing the bent part of the push plate, thus being able to replace the clamping manipulator used in the existing packaging equipment, and reducing the clamping and extrusion of the plastic bottles by limiting operations, reducing the risk of plastic bottle deformation.

[0018] By designing an inclined buffer plate, the present invention can not only buffer and protect the plastic bottles and separate and protect adjacent rows of plastic bottles, but also guide the plastic bottles, making the vertically falling plastic bottles be guided to be inclined, so as to be adapted to the inclined inner bottom surface of the packaging box. Moreover, the rubber layer of the buffer plate is designed with guiding grooves to conduct separated guiding on the falling plastic bottles, reducing the collision between adjacent plastic bottles during the fall. Description of the Drawings

[0019] Figure 1 Shows a three-dimensional structural schematic diagram of the formaldehyde packaging equipment with a protection function of the present invention; Figure 2 Shows a three-dimensional structural schematic diagram of the loading frame of the present invention; Figure 3 Shows a three-dimensional structural schematic diagram of the loading frame from another perspective of the present invention; Figure 4 Shows a three-dimensional structural schematic diagram of the buffer plate of the present invention.

[0020] Description of reference numerals: 1 - mounting table, 2 - rotation driving member, 3 - connecting seat, 4 - first telescopic driving member, 5 - loading frame, 51 - feeding port, 52 - groove, 6 - moving driving member, 7 - pushing plate, 71 - bent portion, 8 - supporting plate, 9 - second telescopic driving member, 10 - guiding plate, 11 - connecting frame, 12 - placing table, 13 - limiting plate, 14 - third telescopic driving member, 15 - moving plate, 16 - fourth telescopic driving member, 17 - buffer plate, 171 - guiding groove, 172 - inclined surface. Detailed implementation manners

[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

[0022] Embodiment 1: A formaldehyde packaging device with a protection function, as Figures 1 - 4 shown, includes a mounting table 1; further includes a rotation driving member 2; the rotation driving member 2 is mounted on the mounting table 1, and the rotation driving member 2 is a motor or a DD motor; the driving end of the rotation driving member 2 is mounted with a connecting seat 3; two ends of the connecting seat 3 are respectively mounted with a first telescopic driving member 4, and the first telescopic driving member 4 is an electric push rod; the driving end of each first telescopic driving member 4 is respectively mounted with a loading frame 5; a switch assembly is respectively provided at the bottom opening of each loading frame 5; a moving driving member 6 is respectively mounted in each loading frame 5; the driving end of each moving driving member 6 is respectively mounted with a pushing plate 7; the loading frame 5 has a feeding port 51.

[0023] The switch assembly is composed of a supporting plate 8 and a second telescopic driving member 9; a supporting plate 8 is slidably arranged at the bottom opening of each loading frame 5; a second telescopic driving member 9 is respectively mounted on both sides of each loading frame 5, the second telescopic driving member 9 is an electric push rod, and the driving ends of all the second telescopic driving members 9 on each loading frame 5 are jointly connected to the supporting plate 8 on this loading frame 5.

[0024] One end of each pushing plate 7 close to the feeding port 51 is provided with a bent portion 71 inclined towards the side of pushing the plastic bottle.

[0025] A guiding plate 10 is respectively mounted on the inner side wall of each loading frame 5; the side of the guiding plate 10 facing the feeding port 51 is a bevel structure; a groove 52 is respectively opened on the inner side wall of each loading frame 5, and each groove 52 is opposite to a guiding plate 10.

[0026] The moving driving member 6 is composed of an electric slide rail and an electric slider, the electric slide rail is embedded and mounted on the side wall of the loading frame 5, and the electric slider is connected to the pushing plate 7.

[0027] In this embodiment, as Figure 1As shown, the two loading frames 5 are centrosymmetric about the connecting seat 3. One loading frame 5 faces the conveyor belt for transporting plastic bottles filled with formaldehyde, and the other loading frame 5 faces the packing box for loading plastic bottles filled with formaldehyde. The cover plate of the packing box needs to be manually opened in advance.

[0028] Align the conveying end of the peripheral conveyor belt with the feeding port 51 of the loading frame 5, and send the plastic bottles into the loading frame 5 one by one from the feeding port 51. In the initial state, the push plate 7 is located at one end of the loading frame 5 near the feeding port 51. When each plastic bottle is sent in, the moving driving part 6 drives the push plate 7 to move, so that the push plate 7 pushes the sent plastic bottle to the end of the loading frame 5 far from the feeding port 51, and then controls the push plate 7 to reset to the initial position to wait for the next plastic bottle to enter.

[0029] It should be noted that the interval between two adjacent plastic bottles on the peripheral conveyor belt is fixed. By controlling the conveying speed of the peripheral conveyor belt to adapt it to the pushing and resetting cycle of the push plate 7, the next plastic bottle is sent into the loading frame 5 only after the push plate 7 resets to the initial position, ensuring that the push plate 7 can normally push the plastic bottles.

[0030] Considering that in the existing packaging equipment, the packing of plastic bottles is not continuous, thus taking a long time, two loading frames 5 are designed. When one loading frame 5 is filled with a row of arranged plastic bottles, the rotating driving part 2 can be controlled to drive the connecting seat 3 and the parts thereon to rotate 180 degrees, so that the two loading frames 5 are swapped in position, making the empty loading frame 5 face the peripheral conveyor belt and the loading frame 5 filled with plastic bottles face the packing box. Then, the conveyor belt can continue to transport plastic bottles into the empty loading frame 5. At the position of the loading frame 5 filled with plastic bottles, the telescopic driving part two 9 can be controlled to drive the supporting plate 8 to move, so that the bottom opening of the loading frame 5 is opened, allowing the arranged plastic bottles to fall into the packing box. And the telescopic driving part one 4 can control the movement of the loading frame 5, enabling the loading frame 5 to adjust its position to complete the step-by-step putting of plastic bottles into the packing box. In this way, the continuous packing of plastic bottles can be realized, reducing the waiting time for the transmission of plastic bottles, and arranging the plastic bottles in advance and packing them row by row to improve the packing efficiency; then the worker takes away the packing box filled with plastic bottles and places the next empty packing box.

[0031] Further, considering that there will be a gap between the peripheral conveyor belt and the feeding port 51 of the loading frame 5, most of the plastic bottles being fed have their bodies located inside the loading frame 5, but a small part of the plastic bottles will be suspended at this gap. Therefore, the bent portion 71 of the push plate 7 is designed. When the push plate 7 moves, the bent portion 71 first contacts the plastic bottles being fed. Since the body of the plastic bottle containing formaldehyde is cylindrical, the inclined surface of the bent portion 71 can guide the plastic bottles into the loading frame 5 during movement, allowing the entire body of the plastic bottle to enter the loading frame 5. Then, the plastic bottles are pushed and arranged by the push plate 7; And after the loading frame 5 is filled with plastic bottles, the bent portion 71 of the push plate 7 can block the feeding port 51, so that when the loading frame 5 rotates and adjusts its position, the plastic bottles will not be thrown out from the feeding port 51, realizing the limiting function of the plastic bottles in the loading frame 5, and thus can replace the clamping manipulator used in the existing packaging equipment, reducing the clamping and extrusion of the plastic bottles by the limiting operation and reducing the risk of plastic bottle deformation.

[0032] Further, considering that when a whole row of plastic bottles are placed into the packaging box, since the internal width of the packaging box is very close to the overall width of the arranged whole row of plastic bottles, the two sides of the whole row of plastic bottles will be in close contact with the inner wall of the packaging box and generate friction, resulting in too much resistance during the falling process of the plastic bottles and a risk of tipping. Therefore, the guiding plate 10 and the groove 52 are designed. When the first plastic bottle entering the loading frame 5 is pushed by the push plate 7 and contacts the guiding plate 10, the plastic bottle is guided by the inclined side structure of the guiding plate 10 and moves to the groove 52, so that the first plastic bottle entering the loading frame 5 moves into the groove 52, while the other plastic bottles move normally, as Figure 2 shown, making the other plastic bottles arranged in a normal horizontal line, while the first plastic bottle moving into the groove 52 deviates from the horizontal line of the arrangement of the other plastic bottles. In this way, during the process of a row of plastic bottles falling into the packaging box, the two side plastic bottles will not be in simultaneous close contact with the inner wall of the packaging box and cause hard extrusion and friction, because one side of the plastic bottles (i.e., the plastic bottles located at the groove 52) deviates from the horizontal line of the arrangement of the other plastic bottles, allowing both sides of the plastic bottles to have space for movement and enabling the whole row of plastic bottles to fall smoothly into the packaging box.

[0033] Embodiment 2: On the basis of Embodiment 1, as Figures 1 - 4 shown, a connecting frame 11 is installed on one side of the mounting table 1; a placing table 12 with an inclined upper surface is installed on the connecting frame 11; the high end of the inclined surface of the placing table 12 faces the mounting table 1, and a limiting plate 13 is installed at the low end of the inclined surface of the placing table 12.

[0034] A telescopic driving member three 14 is installed at the upper end of the connecting frame 11, and the telescopic driving member three 14 is an electric push rod; a moving plate 15 is installed at the driving end of the telescopic driving member three 14; two telescopic driving members four 16 are installed on the side of the moving plate 15 away from the telescopic driving member three 14, and the telescopic driving member four 16 is an electric push rod; a buffer plate 17 is jointly installed at the driving ends of the two telescopic driving members four 16. A rubber layer is provided on the side of the buffer plate 17 facing the mounting table 1. The buffer plate 17 is located above the placing table 12. The buffer plate 17 and the telescopic driving member four 16 are inclined and parallel to each other, and the buffer plate 17 is perpendicular to the upper inclined surface of the placing table 12.

[0035] Arc-shaped guiding grooves 171 are formed in the rubber layer of the buffer plate 17, and the number of the guiding grooves 171 is the same as the number of plastic bottles loaded in the storage frame 5.

[0036] An inclined surface 172 is provided at the lower end of the side of the buffer plate 17 facing away from the mounting table 1.

[0037] In this embodiment, considering that the plastic bottles in each row falling into the packing box can be automatically attached closely, the placing table 12 with an inclined upper surface is designed. The worker pre-places the packing box with the cover opened on the placing table 12, making the packing box in an inclined state, and the lower end of the packing box is supported by the limiting plate 13, so that the later row of plastic bottles placed can lean against the previous row of plastic bottles under the action of gravity.

[0038] Furthermore, considering that buffer protection is required during the falling process of plastic bottles, a buffer plate 17 is designed. Before the plastic bottles fall, the buffer plate 17 is controlled by the fourth telescopic driving member 16 to move downward into the packing box, so that the buffer plate 17 is located on the falling path of the plastic bottles. When the plastic bottles in the loading frame 5 fall, they first contact the rubber layer of the buffer plate 17, and the rubber layer is used for buffering to reduce the risk of damage to the plastic bottles during falling. Moreover, the inclined buffer plate 17 can guide the plastic bottles, so that the vertically falling plastic bottles can be guided to be inclined, thus adapting to the inclined inner bottom surface of the packing box. And the rubber layer of the buffer plate 17 is designed with guide grooves 171, and the falling plastic bottles are separated and guided through the guide grooves 171, that is, each plastic bottle falls in a corresponding guide groove 171, reducing the collision between adjacent plastic bottles during falling. After a row of plastic bottles has fallen, the fourth telescopic driving member 16 is controlled to drive the buffer plate 17 to move obliquely upward, so that the buffer plate 17 leaves the packing box. This row of plastic bottles loses the support of the buffer plate 17 and moves downward along the inner bottom surface of the packing box under the action of gravity and leans against it. Then, the third telescopic driving member 14 is controlled to drive the moving plate 15 to move, so that the buffer plate 17 moves to the position where the next row of plastic bottles will fall. Then, the fourth telescopic driving member 16 is controlled to drive the buffer plate 17 to move obliquely downward, so that the buffer plate 17 moves downward into the packing box to prepare for buffering the falling of the next row of plastic bottles, so as to achieve the buffering of the falling of each row of plastic bottles and separate the previously packed plastic bottles in the previous row at the same time, avoiding the collision between the plastic bottles falling in the next row and the previous row.

[0039] Furthermore, considering that by designing the guide plate 10 and the groove 52, one plastic bottle is deviated from the horizontal line of the arrangement of other plastic bottles, so that in the packing box, it is difficult for the deviated plastic bottle to be on the same horizontal line as other plastic bottles and be closely attached. Therefore, an inclined surface 172 is designed on the buffer plate 17, so that when the buffer plate 17 moves downward, it can push the plastic bottles that have fallen in the previous row through the inclined surface 172, so that the deviated plastic bottle can be pushed to be on the same horizontal line as other plastic bottles in the same row, completing the tight packing of the plastic bottles.

[0040] It should be noted that since the buffer plate 17 is also required for buffering when loading the last row of plastic bottles, after loading the last row of plastic bottles and pulling out the buffer plate 17, the last row of plastic bottles will move and lean against the previous row of plastic bottles, leaving a gap between the last row of plastic bottles and the inner side wall of the packing box. Therefore, finally, before the worker moves away the packing box full of plastic bottles, a sponge plate with the same size as the gap needs to be stuffed. The sponge plate can be made in a matching way with the packing box to ensure the tight placement of the plastic bottles in the packing box.

[0041] Embodiment 3: On the basis of Embodiment 2, a formaldehyde packaging method with a protection function includes the following steps: Step 1: Convey plastic bottles filled with formaldehyde into one of the loading frames 5 through an external conveyor belt, and cooperate with the movement of the push plate 7 to align the plastic bottles in the loading frame 5; Step 2: Control the rotation drive member 2 to drive the connecting seat 3 and the parts thereon to rotate 180 degrees, so that the two loading frames 5 exchange positions, making the empty loading frame 5 face the external conveyor belt, and the loading frame 5 loaded with plastic bottles face the packing box, enabling the two loading frames 5 to be used continuously; Step 3: Move the buffer plate 17 to the falling path of the plastic bottles to buffer and protect the falling plastic bottles, reducing the collision damage of the plastic bottles during falling.

[0042] The above embodiments are only preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A formaldehyde packaging device, comprising an installation table (1); characterized in that: It further includes a rotation driving member (2); the rotation driving member (2) is installed on the mounting table (1); the driving end of the rotation driving member (2) is installed with a connecting seat (3); both ends of the connecting seat (3) are respectively installed with a first telescopic driving member (4); the driving end of each first telescopic driving member (4) is respectively installed with a loading frame (5); a switch assembly is respectively provided at the bottom opening of each loading frame (5), and when the switch assembly is opened, the plastic bottle drops; a moving driving member (6) is respectively installed in each loading frame (5); the driving end of each moving driving member (6) is respectively installed with a pushing plate (7), and the pushing plate (7) is controlled to move in the loading frame (5) by the moving driving member (6); the loading frame (5) has a feeding port (51), and the plastic bottles filled with formaldehyde are fed into the loading frame (5) one by one from the feeding port (51) through an external conveyor belt, and the plastic bottles are arranged by the movement of the pushing plate (7).

2. The formaldehyde packaging device according to claim 1, characterized in that: The switch assembly is composed of a supporting plate (8) and a second telescopic driving member (9); a supporting plate (8) is slidably arranged at the bottom opening of each loading frame (5); several second telescopic driving members (9) are installed on each loading frame (5); the driving ends of all the second telescopic driving members (9) on each loading frame (5) are jointly connected to the supporting plate (8) on this loading frame (5); the supporting plate (8) is driven to move by the second telescopic driving member (9), so that the bottom opening of the loading frame (5) is opened to let the plastic bottle drop.

3. The formaldehyde packaging equipment according to claim 1, characterized in that: One end of each pushing plate (7) close to the feeding port (51) is provided with a bending portion (71) inclined towards the side of pushing the plastic bottle.

4. The formaldehyde packaging device according to claim 1, characterized in that: A guiding plate (10) is installed on the inner side wall of each loading frame (5); the side of the guiding plate (10) facing the feeding port (51) is a bevel structure; a groove (52) is opened on the inner side wall of each loading frame (5), and each groove (52) is opposite to a guiding plate (10).

5. The formaldehyde packaging device according to claim 1, characterized in that: The moving driving member (6) is composed of an electric slide rail and an electric slider. The electric slide rail is embedded and installed on the side wall of the loading frame (5), and the electric slider is connected to the pushing plate (7), and the pushing plate (7) is driven to move by the electric slider.

6. The formaldehyde packaging device according to claim 4, characterized in that: A connecting frame (11) is installed on one side of the mounting table (1); a placing table (12) with an inclined upper surface is installed on the connecting frame (11); the high end of the inclined surface of the placing table (12) faces the mounting table (1), and a limiting plate (13) is installed at the low end of the inclined surface of the placing table (12).

7. A formaldehyde packaging device according to claim 6, characterized in that: A telescopic driving member three (14) is installed at the upper end of the connecting frame (11); a moving plate (15) is installed at the driving end of the telescopic driving member three (14); two telescopic driving members four (16) are installed on one side of the moving plate (15) away from the telescopic driving member three (14); a buffer plate (17) is jointly installed at the driving ends of the two telescopic driving members four (16). A rubber layer is provided on the side of the buffer plate (17) facing the mounting table (1). The buffer plate (17) is located above the placing table (12). The buffer plate (17) and the telescopic driving member four (16) are in an inclined shape parallel to each other, and the buffer plate (17) is perpendicular to the upper inclined surface of the placing table (12).

8. A formaldehyde packaging device according to claim 7, characterized in that: Arc-shaped guiding grooves (171) are formed in the rubber layer of the buffer plate (17), and the number of the guiding grooves (171) is the same as the number of plastic bottles loaded in the storage frame (5).

9. A formaldehyde packaging device according to claim 7, characterized in that: An inclined surface (172) is provided at the lower end of the side of the buffer plate (17) facing away from the mounting table (1).

10. A formaldehyde packaging method with a protection function, using a formaldehyde packaging device as described in claim 7, characterized in that: Including the following steps: Step 1: Convey plastic bottles filled with formaldehyde into one of the storage frames (5) through an external conveyor belt, and cooperate with the movement of the push plate (7) to arrange the plastic bottles in the storage frame (5). Step 2: Control the rotary driving member (2) to drive the connecting seat (3) and the parts thereon to rotate 180 degrees, so that the two storage frames (5) are swapped in position, making the empty storage frame (5) face the external conveyor belt, while the storage frame (5) loaded with plastic bottles faces the packaging box, enabling the two storage frames (5) to be used continuously. Step 3: Move the buffer plate (17) to the falling path of the plastic bottles to buffer and protect the falling plastic bottles, reducing the collision damage of the plastic bottles during falling.

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