Tablet adsorption type turn-over transfer mechanism

Abstract

The utility model discloses a tablet adsorption type turn-over transfer mechanism which comprises a first material conveying disc, a first driving device for driving the first material conveying disc to rotate, a second material conveying disc and a second driving device for driving the second material conveying disc to rotate. Negative pressure cavities are formed in the first material conveying disc and the second material conveying disc correspondingly, and a circle of slits connected with the negative pressure cavities are formed in the circumferential side of the first material conveying disc and the circumferential side of the second material conveying disc correspondingly; the axis of the first material conveying disc and the axis of the second material conveying disc are coplanar, and one side of the first material conveying disc is connected with one side of the second material conveying disc in a spaced mode. A vacuum breaking area is arranged at the joint of the first material conveying disc and the second material conveying disc. According to the utility model, the processing difficulty is reduced, the production cost is reduced, and the transfer efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of tablet detection technology, specifically to a tablet adsorption-type flipping and transfer mechanism. Background Technology

[0002] Currently, patent CN107073524A discloses an automatic tablet inspection device. This device supplies tablets via a tablet feeder and utilizes a tablet supply unit comprising a supply guide, sprocket rollers, alignment brushes, and cylindrical guides to align and transport the tablets one by one to a tablet alignment and transport unit. The tablet alignment and transport unit includes an upper roller and a lower roller. The upper roller uses vacuum to adsorb the upper side of the tablets, while the lower roller adsorbs the lower side of the flipped tablets. It is equipped with an upper side detection camera and a flipped-up detection camera to perform a comprehensive visual inspection of the tablets. Finally, based on the inspection results, defective and normal tablets are discharged separately into corresponding discharge boxes using compressed air.

[0003] However, this pill inspection device based on roller adsorption has many shortcomings in practical applications.

[0004] First, the method of setting multiple grooves on the roller to adsorb tablets requires extremely high precision in the machining and alignment of these grooves. During production, insufficient machining precision or misalignment of the grooves will prevent accurate tablet adsorption, thus affecting the stability and accuracy of the entire testing process. Furthermore, the limited number of grooves on the roller surface restricts the number of tablets that can be adsorbed, failing to meet the demands of high-efficiency testing in large-scale production.

[0005] Secondly, during the tablet adsorption process, each tablet needs to be individually inserted into the grooves on the rollers. This process is inefficient and prone to tablet jamming, which not only affects production progress but may also damage the tablets, increasing production costs. Furthermore, when tablets need to be flipped for comprehensive testing, current technology relies on the precise alignment of the grooves on the two rollers to achieve this. This setup is extremely complex, requiring precise adjustments to the position and speed of the two rollers, increasing the difficulty and cost of equipment setup and maintenance, and also reducing production efficiency. Utility Model Content

[0006] The purpose of this invention is to address the problems existing in the prior art by providing a tablet adsorption-type flipping and transfer mechanism, which reduces processing difficulty, lowers production costs, improves transfer efficiency, and enables more comprehensive testing of tablets.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A tablet adsorption-type flipping and transfer mechanism includes a first conveying tray and a first driving device for driving its rotation, a second conveying tray and a second driving device for driving its rotation; both the first and second conveying trays have a negative pressure chamber inside, and both the first and second conveying trays have a slit around their periphery connecting the negative pressure chamber; the axes of the first and second conveying trays are coplanar, and one side of the first conveying tray is spaced apart from one side of the second conveying tray; a vacuum breaking zone is provided at the connection between the first and second conveying trays.

[0009] Furthermore, the first conveying tray includes an upper cover, a lower lip ring, a partition plate, and a bottom plate; the partition plate is disposed between the upper cover and the bottom plate and is fixed to the bottom plate, forming a negative pressure cavity between the partition plate and the bottom plate; the lower lip ring is sleeved on the outer periphery of the bottom plate and is bolted to the upper cover, the gap between the lower lip ring and the upper cover is the slit; both the bottom plate and the partition plate have mounting holes in their middle portions, and the output shaft of the first driving device passes through the mounting holes of the bottom plate and the partition plate and connects to the upper cover.

[0010] Furthermore, the base plate is provided with two partitions, one end of each partition is connected to the peripheral edge of the base plate, and the other end is connected to the mounting hole of the base plate; the two partitions divide the base plate into the negative pressure chamber and the vacuum breaking zone; the base plate is provided with an air pipe connector and a through hole, the air pipe connector is located in the negative pressure chamber, and the through hole is located in the vacuum breaking zone.

[0011] Furthermore, a pair of ring stickers are provided on the upper and lower sides of the slit, one of which is fixedly sleeved with the upper cover and the other is fixedly sleeved with the lower lip ring.

[0012] Furthermore, the angle between the axis of the first conveying tray and the axis of the second conveying tray is α; the peripheral side of the first conveying tray is parallel to its axis, and the angle between the peripheral side of the second conveying tray and its axis is β, and α=β.

[0013] Furthermore, it includes a first support plate and a second support plate; a first support seat is provided on one side of the first support plate, the first support seat is connected to the bottom of the first conveying tray, the first driving device is connected to the other side of the first support plate, and the output shaft of the first driving device passes through the first support plate and the first support seat and is connected to the first conveying tray; a second support seat is provided on one side of the second support plate, the second support seat is connected to the bottom of the second conveying tray, the second driving device is connected to the other side of the second support plate, and the output shaft of the second driving device passes through the second support plate and the second support seat and is connected to the second conveying tray.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Slits are made around the conveyor tray to absorb the tablets, eliminating the need for separate grooves, reducing processing difficulty and production costs. At the same time, the tablets can be arranged tightly in a ring on the slits, improving transfer efficiency and thus enhancing overall production efficiency.

[0016] 2. When the tablet is adsorbed into the slit, only a small part of its side is inserted into the slit, while its other end face and peripheral face are exposed. This makes it easier for the visual inspection device to perform a more comprehensive inspection of the tablet.

[0017] 3. By arranging the tablets in a ring along the narrow slot of the feed tray, the vision inspection device only needs to deal with a single row of tablets and does not need to pay attention to the arrangement of the tablets in the groove, making the vision inspection process simpler and more efficient, and significantly improving the inspection efficiency.

[0018] 4. By rotating the feeding tray and using the suction effect of the slit, the tablets are automatically flipped and transferred, avoiding complicated debugging steps, greatly reducing the difficulty of operation, and improving production efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a tablet adsorption-type flipping and transfer mechanism in one embodiment of this application;

[0021] Figure 2 This is a cross-sectional view of a tablet adsorption-type flipping and transfer mechanism according to an embodiment of this application;

[0022] Figure 3 For this application Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is an exploded view of the first material conveying tray in one embodiment of this application;

[0024] In the diagram: 1. First conveying tray; 2. First driving device; 3. Second conveying tray; 4. Second driving device; 5. Negative pressure chamber; 6. Vacuum breaking zone; 7. Air pipe connector; 8. Ring; 9. First support plate; 10. Second support plate; 11. First support base; 12. Second support base; 101. Upper cover; 102. Lower lip ring; 103. Isolation plate; 104. Bottom plate; 105. Partition block. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Currently, patent CN107073524A discloses an automatic tablet inspection device. This device supplies tablets via a tablet feeder and utilizes a tablet supply unit comprising a supply guide, sprocket rollers, alignment brushes, and cylindrical guides to align and transport the tablets one by one to a tablet alignment and transport unit. The tablet alignment and transport unit includes an upper roller and a lower roller. The upper roller uses vacuum to adsorb the upper side of the tablets, while the lower roller adsorbs the lower side of the flipped tablets. It is equipped with an upper side detection camera and a flipped-up detection camera to perform a comprehensive visual inspection of the tablets. Finally, based on the inspection results, defective and normal tablets are discharged separately into corresponding discharge boxes using compressed air.

[0030] However, this pill inspection device based on roller adsorption has many shortcomings in practical applications.

[0031] First, the method of setting multiple grooves on the roller to adsorb tablets requires extremely high precision in the machining and alignment of these grooves. During production, insufficient machining precision or misalignment of the grooves will prevent accurate tablet adsorption, thus affecting the stability and accuracy of the entire testing process. Furthermore, the limited number of grooves on the roller surface restricts the number of tablets that can be adsorbed, failing to meet the demands of high-efficiency testing in large-scale production.

[0032] Secondly, during the tablet adsorption process, each tablet needs to be individually inserted into the grooves on the rollers. This process is inefficient and prone to tablet jamming, which not only affects production progress but may also damage the tablets, increasing production costs. Furthermore, when tablets need to be flipped for comprehensive testing, current technology relies on the precise alignment of the grooves on the two rollers to achieve this. This setup is extremely complex, requiring precise adjustments to the position and speed of the two rollers, increasing the difficulty and cost of equipment setup and maintenance, and also reducing production efficiency.

[0033] To address the above technical issues, such as Figures 1 to 4 As shown, this embodiment provides a tablet adsorption-type flipping and transfer mechanism, including a first conveying tray 1 and a first driving device 2 for driving its rotation, a second conveying tray 3 and a second driving device 4 for driving its rotation; both the first conveying tray 1 and the second conveying tray 3 are provided with a negative pressure chamber 5 inside, and both the first conveying tray 1 and the second conveying tray 3 are provided with a slit connecting the negative pressure chamber 5 around their periphery; the axes of the first conveying tray 1 and the second conveying tray 3 are coplanar, and one side of the first conveying tray 1 and one side of the second conveying tray 3 are connected at intervals; a vacuum breaking zone 6 is provided at the connection between the first conveying tray 1 and the second conveying tray 3.

[0034] First, a top-feeding device, such as the one disclosed in CN219818430U, can be used. The tablets move in a circular motion along the inner wall of the conveying platform under the action of the feeding disc, achieving initial rapid feeding. Subsequently, driven by the conveying platform, the tablets move along the spiral conveying channel, forming a circumferential ring arrangement. Under the action of gravity, the tablets are all in a flat state, preparing for subsequent adsorption and transfer.

[0035] The first feeding tray 1 begins to rotate under the drive of the first driving device 2. When the tablets move sequentially to one side of the first feeding tray 1, a negative pressure chamber 5 is provided inside the first feeding tray 1, and a slit is provided around its periphery connecting the negative pressure chamber 5. At this time, the slit generates suction force, which picks up the tablets one by one, causing the tablets to adhere to the first feeding tray 1. The tablets are arranged in a circle on the first feeding tray 1, with the front of the tablets facing outwards, which facilitates the visual inspection device to perform defect detection on the front of the tablets.

[0036] When the tablets are transported between the first conveyor tray 1 and the second conveyor tray 3, the tablets are positioned precisely in the vacuum-breaking zone 6 of the first conveyor tray 1. In the vacuum-breaking zone 6, the suction force of the first conveyor tray 1 on the tablets decreases. At the same time, the slit of the second conveyor tray 3 uses suction to draw the tablets onto it, causing the tablets to flip over and arrange themselves in a ring along the slit of the second conveyor tray 3, so that the visual inspection device can perform defect detection on the reverse side of the tablets.

[0037] This embodiment uses a conveyor tray instead of a roller, and slits are made on the periphery of the conveyor tray to adsorb the tablets, eliminating the need to process individual grooves. Compared to the prior art where multiple grooves are set on the roller to adsorb the tablets, this solution reduces processing difficulty, lowers production costs, and improves production efficiency.

[0038] The tablets can be arranged in a ring on the narrow slit of the conveyor tray, resulting in a more compact arrangement. Compared with the existing technology where the tablets are adsorbed by grooves on the roller and inserted one-to-one, which has low efficiency, this solution makes the tablets more compact and improves the transfer efficiency.

[0039] The visual inspection device only needs to handle a single row of tablets, without having to consider the arrangement of the tablets in the grooves of the roller as in existing technologies, making the visual inspection process simpler and more efficient, and improving inspection efficiency.

[0040] In the process of tablet flipping, existing technology requires the grooves on the two rollers to be perfectly aligned, which is complicated to adjust. This solution avoids this adjustment step. By using the rotation of the feed tray and the suction effect of the slit, the tablets are automatically flipped and transferred, greatly reducing the difficulty of operation.

[0041] In addition, when the tablet is adsorbed into the slit, only a small part of its side is inserted into the slit, while its other end face and peripheral face are exposed. This makes it easier for the visual inspection device to perform a comprehensive inspection of the tablet.

[0042] In some embodiments, the first conveying tray 1 includes an upper cover 101, a lower lip ring 102, a partition plate 103, and a bottom plate 104; the partition plate 103 is disposed between the upper cover 101 and the bottom plate 104 and is fixed to the bottom plate 104, and a negative pressure cavity 5 is formed between the partition plate 103 and the bottom plate 104; the lower lip ring 102 is sleeved on the outer periphery of the bottom plate 104 and is bolted to the upper cover 101, and the gap between the lower lip ring 102 and the upper cover 101 is a slit; the bottom plate 104 and the partition plate 103 are both provided with mounting holes in the middle, and the output shaft of the first driving device 2 passes through the mounting holes of the bottom plate 104 and the partition plate 103 and is connected to the upper cover 101.

[0043] An isolation plate 103 is disposed between the upper cover 101 and the bottom plate 104 and is fixedly connected to the bottom plate 104. With this structure, a closed negative pressure chamber 5 is formed between the isolation plate 103 and the bottom plate 104, and a negative pressure environment can be formed inside the negative pressure chamber by using an external vacuum pump.

[0044] A certain gap is left between the lower lip ring 102 and the upper cover 101. This gap is a slit. When a negative pressure is formed in the negative pressure chamber 5, a suction force will be generated at the slit, which can adsorb the tablets on the outer periphery of the first conveying tray 1.

[0045] When the first drive device 2 is started, its output shaft drives the upper cover 101 to rotate, which in turn drives the entire first conveying tray 1 to rotate. During the rotation, the slit continuously generates suction, adsorbing and transferring the tablets to the flipping docking position.

[0046] In some embodiments, the second conveying tray 3 has the same structure as the first conveying tray 1.

[0047] In some embodiments, the base plate 104 is provided with two partitions 105, one end of each partition 105 is connected to the peripheral edge of the base plate 104, and the other end is connected to the mounting hole of the base plate 104; the two partitions 105 divide the base plate 104 into a negative pressure chamber 5 and a vacuum breaking zone 6, and the base plate 104 is provided with an air pipe connector 7 and a through hole, the air pipe connector 7 is located in the negative pressure chamber 5, and the through hole is located in the vacuum breaking zone 6.

[0048] Through the division effect of the two partitions 105, the base plate 104 is divided into two regions: a negative pressure chamber 5 and a vacuum breaking zone 6. The negative pressure chamber 5 is used to generate the negative pressure environment required for adsorbing the tablets, while the vacuum breaking zone 6 is used to weaken or eliminate the adsorption force on the tablets at the docking position, so as to achieve smooth transfer of the tablets.

[0049] The endotracheal connector 7 is located in the negative pressure chamber 5 area of ​​the base plate 104. An external vacuum device is connected to the negative pressure chamber 5 through the endotracheal connector 7, creating a negative pressure environment inside the negative pressure chamber 5. When the first conveyor tray 1 rotates to the corresponding position, a suction force is generated at the corresponding slit in the negative pressure chamber 5, adsorbing the tablets onto the outer periphery of the first conveyor tray 1.

[0050] As the first conveyor tray 1 continues to rotate, the tablets are transported to the vacuum breaking zone 6. In the vacuum breaking zone 6, due to the blocking effect of the partition block 105 and the connection between the through hole and the outside, the negative pressure environment of this area is disrupted or weakened, thereby reducing the adsorption force on the tablets. At this time, the slit of the second conveyor tray 3 can use suction to adsorb the tablets onto it, realizing the flipping and transfer of the tablets.

[0051] In some embodiments, a pair of ring stickers 8 are provided on the upper and lower sides of the slit, one ring sticker 8 is fixedly sleeved with the upper cover 101, and the other ring sticker 8 is fixedly sleeved with the lower lip ring 102.

[0052] The two ring-shaped adhesive strips 8, as part of the slit structure, are made of silicone strips, giving them a degree of softness and elasticity. When the tablet is attracted to the slit, the ring-shaped adhesive strips 8 come into direct contact with the tablet, allowing for better adhesion. Furthermore, the ring-shaped adhesive strips 8 increase the friction between the tablet and the contact surface, making the tablet more stable in the slit and less prone to falling off due to slight vibrations or airflow.

[0053] In some embodiments, the angle between the axis of the first conveying tray 1 and the axis of the second conveying tray 3 is α; the peripheral side of the first conveying tray 1 is parallel to its axis, and the angle between the peripheral side of the second conveying tray 3 and its axis is β, and α=β.

[0054] By setting the included angle α between the axis of the first conveying tray 1 and the axis of the second conveying tray 3, the equipment installation requirements are met and the space occupied is reduced.

[0055] The peripheral side of the second conveyor tray 3 forms an angle β with its axis, and α = β is set. When the two conveyor trays are installed according to the set angle relationship, although the axis of the first conveyor tray 1 and the axis of the second conveyor tray 3 are not aligned, the peripheral side of the first conveyor tray 1 and the peripheral side of the second conveyor tray 3 can remain parallel due to the matching relationship of the included angles α and β. Parallel sides are crucial for the transfer and flipping of tablets. During the process of transferring tablets from the first conveyor tray 1 to the second conveyor tray 3, parallel sides allow the tablets to transition smoothly in the handover area, reducing problems such as tablet jamming, falling, or positional displacement caused by non-parallel sides, and ensuring smooth tablet transfer and flipping.

[0056] In some embodiments, the system includes a first support plate 9 and a second support plate 10. A first support base 11 is provided on one side of the first support plate 9, and the first support base 11 is connected to the bottom of the first conveying tray 1. A first driving device 2 is connected to the other side of the first support plate 9. The output shaft of the first driving device 2 passes through the first support plate 9 and the first support base 11 and is connected to the first conveying tray 1. A second support base 12 is provided on one side of the second support plate 10, and the second support base 12 is connected to the bottom of the second conveying tray 3. A second driving device 4 is connected to the other side of the second support plate 10. The output shaft of the second driving device 4 passes through the second support plate 10 and the second support base 12 and is connected to the second conveying tray 3.

[0057] For the first conveying tray 1, a first support seat 11 on one side of the first support plate 9 is connected to the bottom of the first conveying tray 1 to form a stable support; the first driving device 2 is connected to the other side of the first support plate 9, and its output shaft passes through the first support plate 9 and the first support seat 11 in sequence and is connected to the first conveying tray 1. When the first driving device 2 is started, the output shaft rotates, transmitting power to the first conveying tray 1, driving it to rotate around its own axis, thereby realizing the adsorption and transfer of tablets. Similarly, the second support seat 12 on one side of the second support plate 10 is connected to the bottom of the second conveying tray 3 to provide support for the second conveying tray 3; the second driving device 4 is connected to the other side of the second support plate 10, and its output shaft passes through the second support plate 10 and the second support seat 12 and is connected to the second conveying tray 3. When the second driving device 4 is running, it drives the second conveying tray 3 to rotate, completing the receiving and further transfer and flipping operation of tablets from the first conveying tray 1.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tablet adsorption-type flipping and transfer mechanism, characterized in that, It includes a first conveying tray (1) and a first driving device (2) for driving its rotation, a second conveying tray (3) and a second driving device (4) for driving its rotation. Both the first conveying tray (1) and the second conveying tray (3) are provided with negative pressure chambers (5), and both the first conveying tray (1) and the second conveying tray (3) are provided with a slit connecting the negative pressure chambers (5) around their periphery; The axes of the first conveying tray (1) and the second conveying tray (3) are coplanar, and one side of the first conveying tray (1) is connected to one side of the second conveying tray (3) at intervals. The first conveying tray (1) has a vacuum breaking zone (6) at the connection with the second conveying tray (3).

2. The tablet adsorption-type flipping and transfer mechanism according to claim 1, characterized in that, The first material conveying tray (1) includes an upper cover (101), a lower lip ring (102), a partition plate (103), and a bottom plate (104). The isolation plate (103) is disposed between the upper cover (101) and the bottom plate (104) and is fixed to the bottom plate (104). A negative pressure cavity (5) is formed between the isolation plate (103) and the bottom plate (104). The lower lip ring (102) is fitted around the outer periphery of the base plate (104) and is bolted to the upper cover (101). The gap between the lower lip ring (102) and the upper cover (101) is the slit. The base plate (104) and the isolation plate (103) are both provided with mounting holes in the middle. The output shaft of the first drive device (2) passes through the mounting holes of the base plate (104) and the isolation plate (103) and connects to the upper cover (101).

3. The tablet adsorption-type flipping and transfer mechanism according to claim 2, characterized in that, The base plate (104) is provided with two partitions (105), one end of each partition (105) is connected to the peripheral edge of the base plate (104), and the other end is connected to the mounting hole of the base plate (104); The two partitions (105) divide the base plate (104) into the negative pressure chamber (5) and the vacuum breaking zone (6). The base plate (104) is provided with an air pipe connector (7) and a through hole. The air pipe connector (7) is located in the negative pressure chamber (5), and the through hole is located in the vacuum breaking zone (6).

4. The tablet adsorption-type flipping and transfer mechanism according to claim 2, characterized in that, A pair of ring stickers (8) are provided on the upper and lower sides of the slit, one of the ring stickers (8) being fixedly sleeved with the upper cover (101), and the other ring sticker (8) being fixedly sleeved with the lower lip ring (102).

5. The tablet adsorption-type flipping and transfer mechanism according to claim 1, characterized in that, The angle between the axis of the first conveying tray (1) and the axis of the second conveying tray (3) is α; The circumferential side of the first conveying tray (1) is parallel to its axis, and the circumferential side of the second conveying tray (3) forms an angle β with its axis, and α=β.

6. The tablet adsorption-type flipping and transfer mechanism according to claim 1, characterized in that, Includes a first support plate (9) and a second support plate (10); A first support base (11) is provided on one side of the first support plate (9). The first support base (11) is connected to the bottom of the first conveying tray (1). The first driving device (2) is connected to the other side of the first support plate (9). The output shaft of the first driving device (2) passes through the first support plate (9) and the first support base (11) and is connected to the first conveying tray (1). A second support seat (12) is provided on one side of the second support plate (10). The second support seat (12) is connected to the bottom of the second conveying tray (3). The second drive device (4) is connected to the other side of the second support plate (10). The output shaft of the second drive device (4) passes through the second support plate (10) and the second support seat (12) and is connected to the second conveying tray (3).

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