Automatic discharging and stacking device for sealing covers

Abstract

An automatic discharging and stacking device for sealing covers comprises a discharging table, two conveying mechanisms and two jacking mechanisms, an upper opening is formed in the table top of the discharging table, a first L-shaped positioning plate and a second L-shaped positioning plate are arranged at the two ends of each conveying mechanism, the second L-shaped positioning plates penetrate through the upper openings and protrude out of the table top, and each jacking mechanism comprises a jacking tray. The discharging table is provided with a horizontal moving module, the horizontal moving module is provided with a transferring mechanism, the transferring mechanism is provided with a vacuum tray, the vacuum tray is provided with a vacuum suction cup, and the vacuum suction cup is provided with a second L-shaped positioning plate and a second L-shaped positioning plate. The transferring mechanism positions and moves the product trays filled with the sealing covers from the conveying mechanism on one side to the opening in the upper portion of the conveying mechanism on the other side to be stacked. According to the utility model, the product trays can be automatically provided, and the full product trays can be automatically stacked, so that the sealing covers can be automatically discharged and stacked after being detected, and the labor cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of production technology and equipment for sealing caps, and in particular to an automatic unloading and stacking device for sealing caps. Background Technology

[0002] The sealing caps are produced through injection molding and LSR (liquid silicone rubber) overmolding. After product inspection, qualified sealing caps are automatically picked up by a six-axis robot and placed onto a product pallet. In existing technology, the six-axis robot places the sealing caps on the product pallet and then transports them to the packaging workshop via a conveyor belt. The product pallets are then manually stacked for packaging. However, this method requires a long conveyor belt, which occupies a significant amount of workshop space. Moreover, because the sealing caps require two-step molding, the production speed cannot keep up with the packaging efficiency of the conveyor belt, resulting in long idle times on the conveyor belt. Furthermore, dedicated workers are needed to wait and stack the products while the conveyor belt is idle. During these idle times, workers are also waiting for product pallets. Therefore, the conveyor belt not only occupies a large amount of space but also wastes considerable time due to its long idle times and human waiting time, which is detrimental to reducing product production costs. Summary of the Invention

[0003] To address the issue of unloading sealing caps after molding onto product pallets, an automated unloading and stacking device for sealing caps needs to be designed. This would avoid the problems of using long conveyor lines and manual stacking by workers, and also prevent workers from waiting.

[0004] To achieve the above objectives, this utility model provides an automatic unloading and stacking device for sealing caps, comprising an unloading platform, two parallel conveying mechanisms disposed below the unloading platform, and two lifting mechanisms corresponding to the conveying mechanisms. The unloading platform has upper openings on its surface corresponding to the two conveying mechanisms. Each conveying mechanism includes a pair of conveying frames, each with a baffle for positioning a product tray. The baffle has a first L-shaped positioning plate and a second L-shaped positioning plate at both ends. The product tray is positioned by the baffle and moves between the first and second L-shaped positioning plates. The second L-shaped positioning plate extends protruding from the conveying frame. The connection extends through the upper opening and protrudes from the table surface. The lifting mechanism, located below the upper opening, includes a lifting tray. The lifting tray lifts the product tray positioned on the second L-shaped positioning plate to the upper opening of the table surface. A horizontal moving module is provided at the edge of the unloading platform. The horizontal moving module is slidably equipped with a transfer mechanism. The transfer mechanism is equipped with a vacuum tray. The vacuum tray extends from the upper opening and is movable up and down. A vacuum suction cup is provided at the bottom of the vacuum tray. The transfer mechanism moves the product tray filled with sealing caps from one side of the transfer mechanism to the upper opening of the other side of the transfer mechanism for stacking.

[0005] This invention comprises two transmission mechanisms. One mechanism provides empty product trays to the unloading platform. Stacked empty product trays are manually positioned on a first L-shaped positioning plate on this mechanism. Positioned by a conveyor belt and baffles, the stacked empty product trays move from the first L-shaped positioning plate to a second L-shaped positioning plate. A bottom lifting mechanism then lifts the trays from the bottom of the second L-shaped positioning plate, raising the top tray to the upper opening surface of the unloading platform. A six-axis robot places qualified, molded sealing caps onto the top tray. Once the tray is full of sealing caps, it is moved and positioned to the corresponding upper opening surface of the other transmission mechanism via a transfer mechanism. After the tray is removed, the bottom lifting mechanism continues to lift the stacked empty product trays to the upper opening surface of the unloading platform. When the empty product trays are consumed, the lifting mechanism descends below the transmission mechanism, which then moves the product trays from the first L-shaped positioning plate to the second L-shaped positioning plate.

[0006] This utility model includes a transmission mechanism, another part of which is used to receive full product trays. The product trays filled with sealed caps are supported by the lifting mechanism at the bottom. After the product trays filled with sealed caps are moved in, the lifting mechanism at the bottom lowers the stacked full product trays, so that the upper opening surface of the unloading platform can continue to receive new product trays filled with sealed caps. When the stacked full product trays reach a certain quantity, the lifting cylinder lowers completely, so that the stacked full product trays are moved from the second L-shaped positioning plate to the first L-shaped positioning plate through the transmission mechanism, and are then directly packaged manually.

[0007] Furthermore, the transfer mechanism includes a transfer plate slidably disposed on the horizontal moving module, the transfer plate having a support plate, the support plate having a suction cup cylinder, and the vacuum tray being connected to the extension of the suction cup cylinder.

[0008] Retractable rod end. The vacuum tray moves horizontally through the upper opening via a horizontal sliding module, and the vacuum tray is controlled by suction cups.

[0009] The cylinder moves up and down, thereby enabling the vacuum suction cup to adsorb the product tray and transfer it.

[0010] Furthermore, a plurality of rotating drive rollers are provided between a pair of the transmission racks, and two transmission belts are sleeved between the plurality of drive rollers. A rotating device is connected to one of the drive rollers. The rotating device includes a transmission motor fixed on the transmission rack and a gearbox connected to the transmission motor. The gearbox is connected to the drive roller in a transmission connection. By means of the rotating device, the drive roller drives the transmission belt to move, and the product pallets stacked on the transmission rack move from one end of the transmission rack to the other end.

[0011] Furthermore, the upper surface of the conveyor belt is higher than the bottom surface of the baffle. When the stacked product pallets are transported on the conveyor mechanism, the bottom of the stacked product pallets presses against the surface of the conveyor belt and is supported by the baffles on both sides. When the conveyor belt moves, the product pallets are driven to move by the resistance between the stacked product pallets and the conveyor belt.

[0012] Furthermore, transmission support plates are provided between the transmission racks to support the transmission belt. These support plates help maintain the transmission belt's horizontal position and prevent it from sagging and failing to contact the product pallet.

[0013] Furthermore, the lifting mechanism includes a lifting cylinder, which is fixedly connected to the bottom of the unloading platform, and the lifting tray is connected to the telescopic rod end of the lifting cylinder. The lifting tray, via the lifting cylinder, lifts the stacked product trays from between the second L-shaped positioning plates of the transfer mechanism onto the platform, thereby facilitating operation.

[0014] Furthermore, the length of the lifting tray is smaller than the distance between the two conveyor belts. When the conveying mechanism needs to transfer the product tray between the two ends, the lifting cylinder of the lifting mechanism retracts the lifting tray, causing it to fall through the gap between the conveyor belts and hide under the baffle of the conveying mechanism, thereby preventing the lifting mechanism from obstructing the conveying mechanism's transmission.

[0015] Furthermore, the unloading platform has first sensors on its upper surface facing the upper opening on both sides of the upper opening, and the second L-shaped positioning plate has sensing notches corresponding to the first sensors. For the transfer mechanism providing empty product trays, when the first sensor detects that there is no product tray at the corresponding upper opening of the transfer mechanism, the lifting mechanism lifts the lower product tray to the upper opening. Through the sensing of the first sensor, the automatic lifting of the lifting mechanism ensures that there is an empty product tray to receive the products taken out by the six-axis robot. If, after the lifting mechanism has lifted, the first sensor still does not detect a product tray, it indicates that the empty product trays have been used up. Upon detecting this, the first sensor, through an external control device, will lift the corresponding product tray. The mechanism descends and is hidden under the baffle of the transfer mechanism. At the same time, the transfer mechanism starts and moves the newly prepared stacked empty product trays on the first L-shaped positioning plate to the second L-shaped positioning plate. The lifting mechanism then lifts the product trays to the upper opening. For the transfer mechanism that receives full product trays, when the first sensor senses a full product tray placed in the upper opening through the sensing notch, the lifting mechanism lowers and lifts the tray, so that the upper opening retains an empty space for receiving full product trays, thereby ensuring that the transfer mechanism can transfer and stack full product trays on it.

[0016] Furthermore, the side wall of the second L-shaped positioning plate is provided with a clearance groove, and a fixing plate is installed on the side wall of the clearance groove. A second sensor is provided on the fixing plate, and the second sensor is directed toward the interior of the second L-shaped positioning plate through the clearance groove. The second sensor can detect whether there are product pallets on the second L-shaped positioning plate in the direction of the fixed plate height. For the transfer mechanism that receives full product pallets, during the process of receiving full product pallets, the lifting mechanism's lifting pallet gradually descends as the number of full product pallets stacked increases. When the lifting mechanism's lifting pallet descends to the height of its bottom product pallet being the height of the fixed plate, the second sensor can detect that there are product pallets at that position, indicating that the number of product pallets stacked on the lifting pallet has reached the set number. The lifting mechanism lowers the lifting pallet to below the baffle of the transfer mechanism, so that the stacked product pallets on the lifting pallet fall onto the baffle through the positioning between the second L-shaped positioning plates. The transfer mechanism starts, and the stacked product pallets are moved from the second L-shaped positioning plate to the first L-shaped positioning plate through the transfer mechanism. The stacked product pallets are convenient for workers to remove and send for packaging. After the transfer is completed and stopped, the lifting mechanism raises again, and the lifting pallet is raised below the upper opening to receive new full product pallets.

[0017] Furthermore, clamping cylinders are provided at the bottom of the tabletop and on both sides of the upper opening. When the transfer mechanism transfers a product tray full of products, the clamping cylinders on both sides clamp the empty product tray, thereby preventing the empty product tray from being lifted up when the product tray full of products on top is transferred.

[0018] This invention utilizes a transmission mechanism with positioning at both ends of a first L-shaped positioning plate and a second L-shaped positioning plate. This mechanism enables the transmission of empty or full stacked product pallets. During movement, since the upper surface of the transmission belt is higher than the bottom surface of the baffle, the friction between the transmission belt and the product pallet allows the transmission belt to drag the product pallet along the bottom surface of the baffle. During transmission, the first and second L-shaped positioning plates ensure that the product pallet is positioned and will not tip over outside the transmission line.

[0019] This invention utilizes the coordinated action of a lifting mechanism and a first and second sensor to lift empty product pallets, ensuring that the upper opening of the unloading platform has empty product pallets to continuously receive the sealing caps transferred by the six-axis robot. At the same time, the lifting mechanism lowers full product pallets, ensuring that the upper opening of the unloading platform has empty stacking positions to receive full product pallets moved by the transfer mechanism, thus realizing automatic stacking of product pallets.

[0020] This invention effectively solves the problem of large space occupation in conveyor lines. Empty product pallets can be automatically provided, and full product pallets can be automatically stacked and automatically transferred to the first L-shaped positioning plate. This allows the sealing caps to be automatically unloaded and stacked after inspection. During this process, no special workers are required to supervise. The stacked product pallets can be prepared on the first L-shaped positioning plate of the conveyor mechanism for empty product pallets at intervals, or the stacked full product pallets can be packed and packaged on the first L-shaped positioning plate of the conveyor mechanism for full product pallets at intervals. Therefore, labor costs are greatly reduced. Attached Figure Description

[0021] Figure 1 This is one of the three-dimensional structural diagrams of an automatic material unloading and stacking device.

[0022] Figure 2 This is the second schematic diagram of the three-dimensional structure of the automatic material unloading and stacking device.

[0023] Figure 3 This is one of the three-dimensional structural diagrams of an automatic unloading and stacking device when no product pallets are loaded.

[0024] Figure 4 This is the second three-dimensional structural diagram of an automatic unloading and stacking device when no product pallets are loaded.

[0025] Figure 5 This is one of the schematic diagrams of the three-dimensional structure of the transmission mechanism.

[0026] Figure 6 This is the second schematic diagram of the three-dimensional structure of the transmission mechanism.

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the transfer mechanism.

[0028] The components are: 1-unloading platform, 11-tabletop, 12-upper opening, 13-first sensor, 14-clamping cylinder, 2-horizontal moving module, 3-transfer mechanism, 31-transfer plate, 32-support plate, 33-suction cup cylinder, 34-vacuum tray, 35-vacuum suction cup, 4-product tray, 5-sealing cover, 6-transfer mechanism, 61-transfer frame, 611-baffle, 612-first L-shaped positioning plate, 613-second L-shaped positioning plate, 614-sensing notch, 615-leaving groove, 616-fixing plate, 617-second sensor, 62-drive roller, 63-transfer belt, 64-transfer support plate, 65-transfer motor, 66-gearbox, 7-lifting mechanism, 71-lifting cylinder, 72-lifting tray. Detailed Implementation

[0029] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0030] An automatic unloading and stacking device for sealing caps, as described in the reference. Figures 1-4 The system includes a feeding platform 1, two parallel conveying mechanisms 6 located below the feeding platform 1, and two lifting mechanisms 7 corresponding to the conveying mechanisms 6. The platform 11 of the feeding platform 1 has upper openings 12 corresponding to the two conveying mechanisms 6. The lifting mechanisms 7 are located below the upper openings 12 and include a lifting tray 72 and a lifting cylinder 71. The lifting cylinder 71 is fixedly connected to the bottom of the feeding platform 1, and the lifting tray 72 is connected to the telescopic rod end of the lifting cylinder 71. The lifting tray 72, through the lifting cylinder 71, lifts the stacked product trays 4 from the conveying mechanisms 6 onto the platform 11. A horizontal moving module 2 is located at the edge of the feeding platform 1, and a transfer mechanism 3 is slidably provided on the horizontal moving module 2. Figure 7 The transfer mechanism 3 includes a vacuum tray 34 and a transfer plate 31 slidably mounted on a horizontal moving module 2. The transfer plate 31 is provided with a support plate 32, and a suction cylinder 33 is provided on the support plate 32. The vacuum tray 34 is connected to the telescopic rod end of the suction cylinder 33. The vacuum tray 34 extends into the upper opening 12 and is movable up and down. A vacuum suction cup 35 is provided at the bottom of the vacuum tray 34. The vacuum tray 34 moves horizontally in the upper opening 12 via the horizontal sliding module 2, and moves up and down via the suction cylinder 33, thereby enabling the vacuum suction cup 35 to adsorb fluid. The product tray 4, filled with sealing caps 5, is moved from one side of the transfer mechanism 6 to the upper opening 12 of the other side of the transfer mechanism 6 and stacked. In this embodiment, in order to better realize the transfer of the product tray 4, clamping cylinders 14 are provided at the bottom of the table 11 and on both sides of the upper opening 12. When the transfer mechanism 3 transfers the product tray 4 filled with products, the clamping cylinders 14 on both sides clamp the empty product tray 4 on the lower layer, thereby preventing the empty product tray 4 from being lifted up when the product tray 4 filled with products on top is transferred.

[0031] Reference Figure 5 , Figure 6The transmission mechanism 6 includes a pair of transmission frames 61. Each transmission frame 61 is provided with a baffle 611 for positioning the product tray 4. The two ends of the baffle 611 are provided with a first L-shaped positioning plate 612 and a second L-shaped positioning plate 613. The product tray 4 is positioned by the baffle 611 and moves between the first L-shaped positioning plate 612 and the second L-shaped positioning plate 613. A plurality of rotating transmission rollers 62 are provided between the two transmission frames 61. Two transmission belts 63 are sleeved between the plurality of transmission rollers 62. A rotating device is connected to one of the transmission rollers 62. The rotating device includes a transmission motor 65 fixed on the transmission frame 61 and a gearbox 66 connected to the transmission motor 65. The gearbox 66 is connected to the transmission roller 62. The rotating device drives the transmission roller 62 to move the transmission belt 63, and the product tray 4 stacked on the transmission frame 61 moves from one end of the transmission frame 61 to the other end.

[0032] In this embodiment, in order to realize the transmission function of the conveyor belt 63, the upper surface of the conveyor belt 63 is higher than the bottom surface of the baffle 611. In order to better maintain the horizontality of the conveyor belt 63 and prevent the conveyor belt 63 from sagging after being squeezed by the product pallet 4 and failing to abut against the product pallet 4, a transmission support plate 64 for supporting the conveyor belt 63 is provided between the transmission frames 61. In this way, when the stacked product pallets 4 are transmitted on the transmission mechanism 6, the bottom of the stacked product pallets 4 presses against the surface of the conveyor belt 63 and is supported by the baffles 611 on both sides. When the conveyor belt 63 moves, the resistance between the stacked product pallets 4 and the conveyor belt 63 drives the product pallets 4 to move. The above-mentioned movement method can also realize the end point positioning of the product pallets 4 at both ends through the first L-shaped positioning plate 612 and the second L-shaped positioning plate 613. Even if the conveyor belt 63 moves continuously, the first L-shaped positioning plate 612 and the second L-shaped positioning plate 613 prevent the product pallets 4 from slipping outside the moving mechanism 6.

[0033] Wherein, after the second L-shaped positioning plate 613 protrudes from the transfer frame 61, when the transfer mechanism 6 is set below the upper opening 12 of the unloading table 1, the second L-shaped positioning plate 613 can pass through the upper opening 12 and protrude on the table surface 11. After the second L-shaped positioning plate 613 of the transfer frame 61 is connected as described above, the transfer mechanism 6 and the second L-shaped positioning plate 613 form a positioning channel between the baffle 611 and the upper opening 12, which has a positioning function and allows the lifting mechanism 7 to move the product tray 4 up and down. Therefore, the lifting tray 72 can lift the product tray 4 positioned on the second L-shaped positioning plate 613 to the upper opening 12 of the table surface 11, ensuring that the lifting mechanism 7 can accurately position the product tray 4 when lifting it, improving the positioning accuracy and simplifying the positioning structure of the lifting mechanism 7.

[0034] In this embodiment, the lifting mechanism 7 is located below the upper opening 12 of the unloading platform 1. To avoid interference between the lifting tray 72 of the lifting mechanism 7 and the transmission mechanism 6, the length of the rectangular lifting tray 72 is smaller than the distance between the two transmission belts 63. Thus, when the transmission mechanism 6 needs to transfer the product tray 4 between the two ends, the lifting cylinder 71 of the lifting mechanism 7 retracts the lifting tray 72, causing the lifting tray 72 to fall through the gap between the transmission belts 63 and hide under the baffle 611 of the transmission mechanism 6, thereby preventing the lifting mechanism 7 from obstructing the transmission of the transmission mechanism 6.

[0035] In this embodiment, in order to control the lifting action of the lifting mechanism 7 on the product tray 4, the table surface 11 of the unloading platform 1 is provided with first sensors 13 on both sides of the upper surface facing the upper opening 12. Since the second L-shaped positioning plate 613 protrudes from the upper opening 12 of the table surface 11, a sensing notch 614 corresponding to the first sensor 13 is opened on the second L-shaped positioning plate 613. In this embodiment, a second sensor 617 is also provided. Specifically, a clearance groove 615 is opened on the side wall of the second L-shaped positioning plate 613. A fixing plate 616 is installed on the side wall of the clearance groove 615. The fixing plate 616 is provided with the second sensor 617. The second sensor 617 passes through the clearance groove 615 and faces the inside of the second L-shaped positioning plate 613. The second sensor 617 can adjust the height of the fixing plate 616 in the clearance groove 615 according to the actual needs to control the number of fully stacked product trays 4.

[0036] In this embodiment, two parallel conveying mechanisms 6 are used, one for providing empty product trays 4 to the unloading platform 1, and the other for receiving full product trays 4. For the conveying mechanism 6 providing empty product trays 4, when the first sensor 13 detects that there is no product tray 4 at the corresponding upper opening 12 of the conveying mechanism 6, the lifting mechanism 7 lifts the lower product tray 4 to the upper opening 12. Through the sensing of the first sensor 13, the lifting mechanism 7 automatically lifts the upper product tray 4, ensuring there is an empty product tray 4 to receive the products taken out by the six-axis robot. When the lifting mechanism 7 has lifted, if the first sensor 13 still does not detect a product tray 4, it indicates that the empty product trays 4 have been used up. After the first sensor 13 detects this, it uses an external control device to lower the corresponding lifting mechanism 7. The product tray 4 is hidden under the baffle 611 of the transfer mechanism 6. At the same time, the transfer mechanism 6 is activated, moving the newly prepared stacked empty product tray 4 on the first L-shaped positioning plate 612 to the second L-shaped positioning plate 613. The lifting mechanism 7 then lifts the product tray 4 to the upper opening 12. When the first sensor 13 senses the full product tray 4 placed in the upper opening 12 through the sensing notch 614, the lifting mechanism 7 lowers the lifting tray 72, so that the upper opening 12 retains an empty space for receiving the full product tray 4, thereby ensuring that the transfer mechanism 3 can transfer and stack the full product tray 4 on it.

[0037] In this embodiment, the second sensor 617 is used to control the number of stacked product trays 4 that have been fully received. For the transmission mechanism 6 receiving fully received product trays 4, during the process of receiving the full product trays 4, the lifting tray 72 of the lifting mechanism 7 gradually descends as the number of stacked full product trays 4 increases. When the lifting tray 72 of the lifting mechanism 7 descends to the height of its bottommost product tray 4, which is equal to the height of the fixed plate 616, the second sensor 617 can sense that there are product trays 4 at that position, indicating that the stacked product trays 4 on the lifting tray 72 have reached the set value. The lifting mechanism 7 lowers the lifting tray 72 to below the baffle 611 of the transmission mechanism 6, so that the stacked product trays 4 on the lifting tray 72 are positioned between the second L-shaped positioning plates 613 and fall onto the baffle 611. The transmission mechanism 6 is started, and the stacked product trays 4 are moved from the second L-shaped positioning plate 613 to the first L-shaped positioning plate 612 through the transmission mechanism 6. The stacked product trays 4 are convenient for workers to remove and send for packaging. After the transmission is completed and stopped, the lifting mechanism 7 is raised again, and the lifting tray 72 is raised below the upper opening 12 to receive new full product trays 4.

[0038] The above embodiments merely illustrate the implementation of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An apparatus for automatically dispensing and stacking a seal cap, characterized by: The device includes a feeding platform, two parallel conveying mechanisms located below the feeding platform, and two lifting mechanisms corresponding to the conveying mechanisms. The feeding platform has upper openings on its surface corresponding to the two conveying mechanisms. Each conveying mechanism includes a pair of conveying frames, each with a baffle for positioning a product pallet. The baffles have a first L-shaped positioning plate and a second L-shaped positioning plate at both ends. The product pallet is positioned by the baffles and moves between the first and second L-shaped positioning plates. The second L-shaped positioning plate protrudes from the conveying frame, connects through the upper opening, and protrudes from the platform surface. The lifting mechanism, located below the upper opening, includes a lifting tray. The lifting tray lifts the product tray positioned on the second L-shaped positioning plate to the upper opening of the platform. A horizontal moving module is provided at the edge of the unloading platform. The horizontal moving module is slidably equipped with a transfer mechanism. The transfer mechanism is equipped with a vacuum tray. The vacuum tray extends to the upper opening and is movable up and down. A vacuum suction cup is provided at the bottom of the vacuum tray. The transfer mechanism moves the product tray filled with sealing caps from one side of the transfer mechanism to the upper opening of the other side of the transfer mechanism for stacking.

2. The automatic unloading and stacking device for sealing caps according to claim 1, characterized in that: The transfer mechanism includes a transfer plate slidably disposed on the horizontal moving module, the transfer plate having a support plate, the support plate having a suction cup cylinder, and the vacuum tray being connected to the telescopic rod end of the suction cup cylinder.

3. The automatic unloading and stacking device for sealing caps according to claim 1, characterized in that: A plurality of rotating drive rollers are provided between a pair of the transmission racks, and two transmission belts are sleeved between the plurality of drive rollers. A rotating device is connected to one of the drive rollers. The rotating device includes a transmission motor fixed on the transmission rack and a gearbox connected to the transmission motor. The gearbox is connected to the drive roller in a transmission connection. By means of the rotating device, the drive roller drives the transmission belt to move, and the product pallets stacked on the transmission rack move from one end of the transmission rack to the other end.

4. The automatic unloading and stacking device for sealing caps according to claim 3, characterized in that: The upper surface of the conveyor belt is higher than the bottom surface of the baffle.

5. The automatic unloading and stacking device for sealed covers according to claim 3, characterized in that: The transmission racks are provided with transmission support plates to support the transmission belt.

6. The automatic unloading and stacking device for sealed covers according to claim 1, characterized in that: The lifting mechanism includes a lifting cylinder, which is fixedly connected to the bottom of the unloading platform, and the lifting tray is connected to the telescopic rod end of the lifting cylinder.

7. The automatic unloading and stacking device for sealed covers according to claim 3, characterized in that: The length of the rectangular lifting tray is smaller than the distance between the two conveyor belts.

8. The automatic unloading and stacking device for sealed covers according to claim 1, characterized in that: The unloading platform has a first sensor on its upper surface facing the upper opening on both sides of the upper opening, and the second L-shaped positioning plate has a sensing notch corresponding to the first sensor.

9. The automatic unloading and stacking device for sealed covers according to claim 1, characterized in that: The second L-shaped positioning plate has a clearance groove on its side wall, and a fixing plate is installed on the side wall of the clearance groove. A second sensor is provided on the fixing plate, and the second sensor is directed toward the interior of the second L-shaped positioning plate through the clearance groove.

10. The apparatus of claim 1, wherein: Clamping cylinders are provided at the bottom of the platform and on both sides of the upper opening.

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