Flipping mechanism, lifting device and lifting method

Abstract

This invention discloses a flipping mechanism, a lifting device, and a lifting method. The flipping mechanism includes a frame, a first rotating shaft, a second rotating shaft, a remote rod, a connecting rod, and a first telescopic cylinder. Guide rods are vertically fixed to both ends of the second rotating shaft. Rotatable rockers are provided on both sides of the frame, each with a guide hole for the guide rods to pass through. One end of the remote rod is fixed to the first rotating shaft, and the other end is hinged to the second rotating shaft. One end of the connecting rod is fixed to the first rotating shaft, and the other end is hinged to the front end of the piston rod of the first telescopic cylinder. With the movement of the first telescopic cylinder, the second rotating shaft moves in space and rotates. The lifting device provided by this invention, using this flipping mechanism, can drive multiple suction cups to operate simultaneously, improving lifting efficiency. Furthermore, this lifting device can be used for the separation and placement of glutinous rice ball trays, avoiding human contact with the trays and ensuring cleanliness and hygiene.

Description

Technical Field

[0001] The invention relates to the technical field of food packaging equipment, and in particular to a turning mechanism, a supporting device and a supporting method. Background Art

[0002] Pallet separation equipment is commonly used in the fields of pharmaceutical packaging, food packaging, etc. Pallet separation equipment can separate the stacked pallets one by one, and then drop the pallets on a platform such as a conveyor belt, and then load the products into the pallets as the conveyor belt moves forward. For example, the Chinese patent document with publication number CN207684499U records a twist pallet separation machine that improves the efficiency of box removal, which belongs to the field of food packaging equipment; the Chinese patent document with publication number CN106114987A records an insert-type food pallet separation machine; the Chinese patent document with publication number CN203975315U records a plastic pallet separation device, which belongs to the field of food packaging technology.

[0003] The existing equipment for separating trays separates the trays and then allows the trays to fall naturally onto the conveyor belt. In this way, the tray separation equipment occupies the space above the conveyor belt. For a platform like a conveyor belt, the conveyor belt can be lengthened to reserve space for the tray separation equipment. However, if the tray is to be placed on a platform where other operations are required (such as products that need to be loaded immediately), the tray separation equipment will obviously affect other operations. On the other hand, there are deviations in the falling process of the separated trays, and it cannot be guaranteed that they will fall into place accurately every time. In some situations where products are automatically loaded into trays, if the tray cannot fall into place accurately, loading errors will occur when the products are subsequently loaded. Summary of the invention

[0004] The present invention aims to provide a flipping mechanism, a lifting device and a lifting method, so as to solve the technical problem that the prior art tray separation equipment needs to occupy additional space above the tray box, which is not conducive to other operations.

[0005] To solve the above technical problems, the first aspect of the present invention is:

[0006] Design a flip mechanism, including a frame, and also including:

[0007] A first rotating shaft, which is rotatably mounted on the frame;

[0008] A second rotating shaft is parallel to the first rotating shaft, and guide rods are respectively and vertically fixedly connected to both ends of the second rotating shaft, and rotatable rocking blocks are respectively provided on both sides of the frame, and guide holes for passing the guide rods are correspondingly provided on the rocking blocks;

[0009] A remote lever, one end of which is fixed to the first rotating shaft, and the other end of which is hinged to the second rotating shaft;

[0010] A connecting rod, one end of which is fixed on the first rotating shaft;

[0011] The first telescopic cylinder, the other end of the connecting rod is hinged to the front end of the piston rod of the first telescopic cylinder, and along with the action of the first telescopic cylinder, the second rotating shaft moves in space and rotates.

[0012] Preferably, rollers are provided at the bottom of the frame.

[0013] The second aspect of the present invention is:

[0014] Design a lifting device, including:

[0015] The turning mechanism according to any one of the first aspects of the present invention;

[0016] A loading frame, mounted on the frame of the flipping mechanism, for loading the stacked trays;

[0017] A second telescopic cylinder, the cylinder body of which is fixedly mounted on the second rotating shaft of the flipping mechanism;

[0018] A suction cup is installed at the front end of the piston rod of the second telescopic cylinder. The suction cup is provided with an air hole connecting the front and rear surfaces thereof, and the rear end of the air hole is connected with an air pipe. The suction cup initially faces the bottom of the mounting frame. With the movement of the first telescopic cylinder, the second rotating shaft drives the suction cup to move in space and flip to a horizontal state.

[0019] Preferably, the supporting frame includes a fixing frame, a square ring frame is provided on the fixing frame, a guide plate is provided on the inner side of each side of the square ring frame, a first adjustment rod is provided on the back side of the guide plate, and an adjustable connecting component is provided on each side of the square ring frame. The first adjustment rod is installed on the adjustable connecting component, so that the size of the space defined by each guide plate can be adjusted.

[0020] Preferably, the adjustable connecting assembly includes a hollow sleeve, one end of which is reduced in diameter and provided with an external threaded section, a screw hole is provided on each side of the square ring frame, the hollow sleeve is correspondingly tightened on the screw hole, the adjustment rod is correspondingly inserted into the hollow sleeve, and a fixing screw for tightening the adjustment rod is provided on the side of the hollow sleeve.

[0021] Preferably, a box tray anti-falling assembly is provided at the four corners of the bottom of the supporting frame, and the box tray anti-falling assembly includes a fixed block, a second adjusting rod is provided on the back side of the fixed block, and a mounting groove is provided on the front surface, and a toothed bar is provided in the mounting groove, so that the frame corners of the box tray at the bottom of the supporting frame are stuck between the teeth of the toothed bar.

[0022] Preferably, the suction cup comprises a back plate and a mold, the shape and size of the mold are adapted to the inner cavity of the tray placed in the mounting frame, and the mold is mounted on the back plate.

[0023] Preferably, the first telescopic cylinder and the second telescopic cylinder are both pneumatic cylinders.

[0024] Preferably, the mounting frame, the second telescopic cylinder and the suction cup are each provided in plurality.

[0025] The third aspect of the present invention is:

[0026] A lifting method is designed, using the lifting device according to any one of the first aspects of the present invention, comprising the following steps:

[0027] (1) Loading the stacked trays into the tray frame;

[0028] (2) The second telescopic cylinder extends, and the air pipe connected to the suction cup sucks air so that the suction cup sucks the lowest tray in the loading frame, and then the second telescopic cylinder retracts;

[0029] (3) The first telescopic cylinder retracts, and the suction cup moves the sucked tray in space and flips to a horizontal state;

[0030] (4) The second telescopic cylinder is extended, and the air pipe connected to the suction cup stops pumping air, thereby releasing the sucked tray onto the tray placement platform;

[0031] (5) The first telescopic cylinder is extended, the suction cup moves in space and flips to the initial position, and then the next round of lifting action is performed according to steps (1) to (4).

[0032] The main beneficial technical effects of the present invention are:

[0033] 1. The turning mechanism provided by the present invention can be placed beside the tray placing platform without occupying the space above the tray placing platform. When the trays are placed, food can be immediately loaded into the placed trays; therefore, the action of placing the trays does not delay the operation of loading food.

[0034] 2. The cylinder drives the second rotating shaft to rotate while moving in space. Multiple suction cups can be installed on the second rotating shaft, so that the flipping mechanism can drive multiple suction cups to move simultaneously, thereby improving the lifting efficiency.

[0035] 3. The supporting method provided by the present invention can drive the suction cup with the tray box to move and rotate in space through the first telescopic cylinder, and then move the suction cup with the tray box forward through the second telescopic cylinder, so that the tray box can be placed in a fixed position on the tray box placement platform, ensuring that the tray box placement effect is consistent, which is convenient for subsequent glutinous rice balls boxing operations.

[0036] 4. The supporting device provided by the present invention can be used to separate and place the glutinous rice ball trays, avoiding human hands from touching the trays and ensuring that the trays are clean and hygienic. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the turning mechanism of the present invention.

[0038] Figure 2 The figure is a schematic diagram of the installation of the components on the support frame of an embodiment of the turning mechanism of the present invention.

[0039] Figure 3 for Figure 2 Exploded diagram of .

[0040] Figure 4 It is a schematic diagram of the three-dimensional structure of an embodiment of a supporting device of the present invention.

[0041] Figure 5 It is a schematic diagram of the three-dimensional structure of the supporting frame in one embodiment of the supporting device of the present invention.

[0042] Figure 6 It is a schematic diagram of the three-dimensional structure of the support box falling prevention assembly in one embodiment of the support device of the present invention.

[0043] Figure 7 A top view of a separated tray box according to an embodiment of a supporting device of the present invention.

[0044] Figure 8 It is a schematic diagram of the installation of the suction cup and the second telescopic cylinder in one embodiment of the supporting device of the present invention.

[0045] Fig. 9 This is one of the three-dimensional structural schematic diagrams of the suction cup in one embodiment of the lifting device of the present invention.

[0046] Fig.10 This is the second schematic diagram of the three-dimensional structure of the suction cup in one embodiment of the lifting device of the present invention.

[0047] Fig.11 Schematic diagram of the initial position of the suction cup in one embodiment of the lifting device of the present invention.

[0048] Fig.12 This is a schematic diagram of a lifting device according to an embodiment of the present invention when the flip mechanism drives the suction cup to a horizontal position.

[0049] Fig.13 Flow chart of an embodiment of a lift-up method of the present invention.

[0050] Fig.14 This is a schematic diagram of the placement of a lifting device and a dedicated support platform in an embodiment of a lifting method of the present invention.

[0051] In the figure, the reference numerals are as follows: frame 1, support frame 12, side plate 121, roller 13, support shaft 14, first rotating shaft 21, first bearing seat 211, second rotating shaft 22, guide rod 23, connecting block 231, first set screw 232, rocker 24, guide hole 241, rotating shaft portion 242, second bearing seat 243, remote lever 25, first connecting hole 251, first tightening seam 252, second set screw 253, through hole 254, third bearing seat 255, connecting rod 26, hinge hole 261, first telescopic cylinder 27, fisheye joint 271, mounting frame 3. Fixed frame 31, square ring frame 32, guide plate 33, first adjusting rod 331, hollow sleeve 332, third fastening screw 333, box holder stopping assembly 34, fixed block 341, mounting groove 3411, second adjusting rod 342, toothed bar 343, screw 344, second telescopic cylinder 4, support 41, second connecting hole 411, second tightening seam 412, fourth fastening screw 413, suction cup 5, back plate 51, mold 52, second hole section 521, hemispherical body 522, box holder 6, hemispherical cavity 61, frame corner 62, inner cavity 63, conveyor belt 7. DETAILED DESCRIPTION

[0052] The specific implementation modes of the present invention are described below in conjunction with the accompanying drawings and examples. However, the following examples are only used to illustrate the present invention in detail and do not limit the scope of the present invention in any way.

[0053] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. "First", "second", etc. (if any) involved in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0054] Example 1: A flip mechanism, see Figures 1 to 3 .

[0055] The flipping mechanism provided in the embodiment of the present invention is used to drive the sub-supporting mechanism of the upper supporting device to rotate in space, so as to place the tray box sucked by the suction cup on the sub-supporting mechanism on a platform such as a conveyor belt.

[0056] like Figures 1 to 3As shown, the flip mechanism includes a frame 1, the frame 1 includes a base 11 and a support frame 12 fixed on the base 11, and a roller 13 is provided at the bottom of the frame 1 to facilitate the movement of the frame 1. The flip mechanism also includes a first rotating shaft 21, a second rotating shaft 22, a guide rod 23, a rocker 24, a remote rod 25, a connecting rod 26, and a first telescopic cylinder 27, and these components are installed on the base 11 or the support frame 12.

[0057] like Figure 3 As shown, the first rotating shaft 21 and the second rotating shaft 22 are installed parallel to each other between the two side plates 121 of the support frame 12. The first rotating shaft 21 can rotate by itself, and the first bearing seats 211 are respectively installed at the bottom of the side plates 121, and the two ends of the first rotating shaft 21 are correspondingly installed in the first bearing seats 211 through bearings. The two ends of the second rotating shaft 22 are respectively vertically fixedly connected with the guide rod 23, and the two ends of the second rotating shaft 22 are provided with connecting blocks 231. The left side and the front side of the connecting block 231 are respectively provided with plug-in holes corresponding to the second rotating shaft 22 and the guide rod 23. The corresponding ends of the second rotating shaft 22 and the guide rod 23 are plugged into the corresponding plug-in holes, and the second rotating shaft 22 and the guide rod 23 are respectively fixed in the corresponding plug-in holes by the first set screws 232.

[0058] Rockers 24 are respectively provided on the two side plates 121 of the support frame 12, and the rockers 24 can rotate on their own. A guide hole 241 for passing the guide rod 23 is correspondingly provided on the rocker 24. A rotating shaft portion 242 is provided at one end of the rocker 24. The rotation center line of the rotating shaft portion 242 is parallel to the central axis of the second rotating shaft 22. Second bearing seats 243 are installed at corresponding positions of the two side plates of the support frame 12, and the rotating shaft portion 242 is correspondingly installed in the second bearing seat 243 through bearings.

[0059] like Figure 3 As shown, the lower end of the rocker 25 is fixed on the first rotating shaft 21, and the upper end is hinged on the second rotating shaft 22. The lower end of the rocker 25 is provided with a first connecting hole 251, and a first tightening slit 252 connected to the first connecting hole 251 is provided. The first rotating shaft 21 is inserted into the first connecting hole 251, and the first connecting hole 251 is reduced in diameter by tightening the second set screw 253 passing through the first tightening slit 252, so that the lower end of the rocker 25 is fixed on the first rotating shaft 21, so that when the first rotating shaft 21 rotates, the rocker 25 rotates accordingly. A through hole 254 is opened at the upper end of the rocker 25, and the diameter of the through hole 254 is larger than the diameter of the first rotating shaft 21. The upper end of the rocker 25 is fixed to the third bearing seat 255 by screws, and the third bearing seat 255 is assembled on the second rotating shaft 22 through a bearing, so that the upper end of the rocker 25 is hinged on the second rotating shaft 22. When the first rotating shaft 21 rotates, the second rotating shaft 22 can rotate around the first rotating shaft 21 as the central axis.

[0060] like Figure 1As shown, the first telescopic cylinder 27 is a cylinder. In this embodiment, a cylinder of model SI-50×100 is used. The cylinder body is fixed on the base 11. The front end of the piston rod is provided with a fisheye joint 271. One end of the connecting rod 26 is fixedly connected to the middle of the first rotating shaft 21. Figure 3 As shown, the other end of the connecting rod 26 is provided with a hinge hole 261, and the hinge hole 261 and the fisheye joint 271 are connected by a pin shaft.

[0061] As the first telescopic cylinder 27 operates, the second rotating shaft 22 moves in space and rotates. Figure 1 The piston rod of the first telescopic cylinder 27 is in an extended state. When the piston rod of the first telescopic cylinder 27 is retracted, the first rotating shaft 21 rotates and drives the rocker 25 to rotate forward. The second rotating shaft 22 further rotates forward with the first rotating shaft 21 as the central axis. During this process, the guide rod 23 moves along the guide hole 241 of the rocking block 24. At the same time, the rocking block 24 rotates and drives the guide rod 23 to rotate around the axis of the rocking block 24. Since the second rotating shaft 22 is fixed at the end of the guide rod 23, the second rotating shaft 22 rotates as the guide rod 23 rotates.

[0062] Embodiment 2: A lifting device, see Figures 4 to 12 .

[0063] like Figure 4 As shown, the supporting device includes the flip mechanism in Example 1, and a loading frame 3, a second telescopic cylinder 4 and a suction cup 5 installed on the flip mechanism. The loading frame 3 is used to load the stacked trays, the suction cup 5 is used to absorb and separate the trays in the loading frame 3, and the second telescopic cylinder 4 is used to drive the loading frame 3 to move the position to pick up and put the trays. There are three loading frames 3, two telescopic cylinders 4 and suction cups 5, and the supporting device can take three trays at the same time.

[0064] like Figure 5 As shown, the mounting frame 3 includes a fixing frame 31, which is a planar support frame. Two upper and lower square ring frames 32 are arranged on the fixing frame 31. A guide plate 33 is arranged on the inner side of each side of the square ring frame 32. A first adjusting rod 331 is arranged on the back of the guide plate 33. An adjustable connecting component is arranged on each side of the square ring frame 32. The adjustable connecting component includes a hollow sleeve 332. The rear end of the hollow sleeve 332 is reduced in diameter and provided with an external thread section. A screw hole is provided, and the reduced end of the hollow sleeve 332 is correspondingly tightened on the screw hole, the adjusting rod 331 is correspondingly inserted into the hollow sleeve 332, and a third set screw 333 for tightening the adjusting rod 331 is screwed on the side of the hollow sleeve 332. The first adjusting rod 331 is installed on the adjustable connecting assembly in this way, so that the spacing between each guide plate 33 relative to the inner side surface of the square ring frame 32 can be adjusted, and the size of the space defined by each guide plate 33 can be further adjusted to place box holders of different sizes.

[0065] The top of the guide plate 33 is provided with an outwardly inclined portion so as to expand the top of the space enclosed by the guide plate 33 and facilitate placing the stacked trays into the space enclosed by the guide plate 33 .

[0066] Furthermore, the four corners of the bottom of the mounting frame 3 are provided with a tray stopper assembly 34, such as Figure 6 As shown, the tray stop assembly 34 includes a fixed block 341, a second adjustment rod 342 is provided on the back of the fixed block 341, a mounting groove 3411 is provided on the front surface, a toothed bar 343 is provided in the mounting groove 3411, the upper part of the toothed bar 343 is tightened on the fixed block 341 by screws 344, and the lower part is a toothed bar part. Figure 7 As shown, Figure 7 The trays are provided with a plurality of hemispherical cavities 61 for loading the glutinous rice balls, and the frame corners 62 of the trays 6 can be inserted between the teeth of the lower part of the toothed strip 343 to prevent the stacked trays from falling from the bottom of the space enclosed by the guide plate 33. Since the trays are very light, and the frame corners of a plurality of trays at the bottom of the tray stack can be stuck between the teeth of the toothed strip 343 at the same time, the four tray stopper assemblies 34 are sufficient to support the weight of the entire tray stack.

[0067] In addition, the toothed strip 343 is thin at the top and thick at the bottom, so that the screw 344 can be completely sunk into the mounting groove 3411, preventing the screw 344 from blocking the box tray at the bottom of the box tray stack from moving downward.

[0068] like Figure 1 As shown, a support shaft 14 is fixedly provided between two side plates 121 of the flipping device, a fixing frame 31 of the mounting frame 3 is fixedly installed on the support shaft 14 , and the mounting frame 3 maintains an inclined posture, with the lower opening of the mounting frame 3 facing the suction cup 5 .

[0069] In this embodiment, the second telescopic cylinder 4 adopts a cylinder of model MGPM12-1002. Figure 8 As shown, a support 41 is fixedly provided on the back side of the second telescopic cylinder 4, a second connecting hole 411 is provided at the lower end of the support 41, and a second tightening seam 412 connected to the second connecting hole 411 is provided, the support shaft 14 is inserted into the second connecting hole 411, and the second connecting hole 411 is reduced in diameter by tightening a fourth set screw 413 passing through the second tightening seam 412, thereby fixing the support 41 on the support shaft 14.

[0070] Further, the suction cup 5 includes a back plate 51 and a mold 52, and the back plate 51 is mounted on the cylinder head 42 by screws; Fig. 9 As shown, the mold 52 is mounted on the back plate 51 by screws. The suction cup 5 is provided with air holes connecting the front and rear surfaces thereof, the air holes include a first hole section 511 on the back plate 51 and a second hole section 521 on the mold 52, and the rear end of the air holes is provided with internal threads to connect the air pipe.

[0071] The mold 52 is provided with a hemispherical body 522 corresponding to the hemispherical cavity 61 on the tray 6. The overall shape and size of the mold 52 are adapted to the inner cavity 63 of the tray 6 placed in the mounting frame 3. The mold 52 is made of food-grade silicone or food-grade polytetrafluoroethylene. When the mold 52 is extended into the cavity of the tray 6, air is sucked through the air pipe, and a negative pressure space is formed between the front surface of the mold 52 and the inner surface of the tray 6, prompting the suction cup 5 to suck the tray it contacts.

[0072] like Figure 4 As shown, the suction cup 5 initially faces the bottom of the mounting frame 3. When the second telescopic cylinder 4 is extended, the suction cup 5 can be pushed forward to absorb the tray 6 placed in the mounting frame 3, and then the second telescopic cylinder 4 is retracted. Fig.11 and Fig.12 As shown, as the first telescopic cylinder 27 retracts, the second rotating shaft 22 drives the suction cup 5 to move along the space. Fig.11 Move in the direction of the arrow in the figure and turn it over to a horizontal state, place a conveyor belt or other tray placing platform under the horizontal suction cup 5, extend the second telescopic cylinder 4, the suction cup 5 can place the sucked tray on the tray placing platform, and then put the glutinous rice balls into the placed tray.

[0073] Example 3: A method for lifting, see Fig.13 and Fig.14 .

[0074] The lifting method adopts the lifting device in Example 2. The first telescopic cylinder, the second telescopic cylinder and the air path of the suction cup in the method can be controlled separately. The method includes the following steps:

[0075] S100, loading the stacked trays into the tray loading frame.

[0076] In this step, a tray stack is placed in each tray loading frame.

[0077] S200, the second telescopic cylinder is extended, the air pipe connected to the suction cup is evacuated so that the suction cup sucks the lowest tray in the loading frame, and then the second telescopic cylinder is retracted.

[0078] In this step, each suction cup and each second telescopic cylinder are connected to an air pipe, and each second telescopic cylinder is extended at the same time, and each suction cup sucks the corresponding tray at the same time.

[0079] S300, the first telescopic cylinder retracts, and the suction cup carries the sucked tray to move in space and flip to a horizontal state.

[0080] S400, the second telescopic cylinder is extended, the air pipe connected to the suction cup stops pumping air, and the sucked tray is released on the tray placement platform.

[0081] In this step, each second telescopic cylinder is extended at the same time, and each suction cup releases the corresponding tray at the same time. Fig.14 The conveyor belt 7 shown in the figure is the conveyor belt at the lower end of the glutinous rice ball machine. The conveyor belt 7 is provided with a box support frame for placing the box support. The box support is placed on the box support frame through the upper supporting device. The conveyor belt 7 transports the box support to the bottom of the glutinous rice ball machine. The glutinous rice balls made by the glutinous rice ball machine are placed in the box support. Then, the box support with the glutinous rice balls is collected at the end of the conveyor belt 7.

[0082] S500, the first telescopic cylinder is extended, the suction cup moves in space and flips to the initial position, and then the next round of lifting action is performed according to steps S100 to S400.

[0083] Based on the above embodiments, the supporting method provided by the present invention can separate multiple trays at one time, and the supporting efficiency is high. In addition, the supporting device is used to separate the trays, avoiding human hand contact and preventing the trays from being contaminated during the separation process.

[0084] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, those skilled in the art will appreciate that, without departing from the spirit of the present invention, the specific parameters in the above embodiments may be changed to form a plurality of specific embodiments, which are all within the common variation range of the present invention and will not be described in detail herein.

Claims

1. A supporting device, characterized in that: include: Flipping mechanism; The turning mechanism comprises a frame and further comprises: A first rotating shaft, which is rotatably mounted on the frame; A second rotating shaft is parallel to the first rotating shaft, and guide rods are respectively and vertically fixedly connected to both ends of the second rotating shaft, and rotatable rocking blocks are respectively provided on both sides of the frame, and guide holes for passing the guide rods are correspondingly provided on the rocking blocks; A remote lever, one end of which is fixed to the first rotating shaft, and the other end of which is hinged to the second rotating shaft; A connecting rod, one end of which is fixed on the first rotating shaft; A first telescopic cylinder, wherein the other end of the connecting rod is hinged to the front end of the piston rod of the first telescopic cylinder, and as the first telescopic cylinder moves, the second rotating shaft moves in space and rotates; The supporting device further comprises: a supporting frame, mounted on the frame of the turning mechanism, and used for loading the stacked supporting boxes; A second telescopic cylinder, the cylinder body of which is fixedly mounted on the second rotating shaft of the flipping mechanism; A suction cup is mounted on the front end of the piston rod of the second telescopic cylinder, the suction cup is provided with an air hole connecting the front and rear surfaces thereof, and the rear end of the air hole is connected with an air pipe; the suction cup initially faces the bottom of the mounting frame, and as the first telescopic cylinder moves, the second rotating shaft drives the suction cup to move in space and flip to a horizontal state; The mounting frame comprises a fixing frame, a square ring frame is arranged on the fixing frame, a guide plate is arranged on the inner side of each side edge of the square ring frame, a first adjustment rod is arranged on the back of the guide plate, and an adjustable connection assembly is arranged on each side of the square ring frame, and the first adjustment rod is installed on the adjustable connection assembly, so that the size of the space defined by each guide plate can be adjusted; The adjustable connection assembly comprises a hollow sleeve, one end of which is reduced in diameter and provided with an external thread section, a screw hole is provided on each side of the square ring frame, the hollow sleeve is correspondingly tightened on the screw hole, the adjustment rod is correspondingly inserted on the hollow sleeve, and a set screw for tightening the adjustment rod is provided on the side of the hollow sleeve; A box-carrying box stopping assembly is provided at each of the four corners of the bottom of the mounting frame, and the box-carrying box stopping assembly comprises a fixing block, a second adjusting rod is provided on the back of the fixing block, and a mounting groove is provided on the front surface, and a toothed bar is provided in the mounting groove, so that the frame corners of the box-carrying box at the bottom of the mounting frame are stuck between the teeth of the toothed bar; The suction cup comprises a back plate and a mold. The shape and size of the mold are adapted to the inner cavity of the tray placed in the mounting frame, and the mold is mounted on the back plate.

2. The supporting device according to claim 1, characterized in that: Rollers are arranged at the bottom of the frame.

3. The supporting device according to claim 1, characterized in that: The first telescopic cylinder and the second telescopic cylinder are both pneumatic cylinders.

4. The supporting device according to claim 1, characterized in that: The mounting frame, the second telescopic cylinder and the suction cup are each provided with a plurality thereof.

5. A method for lifting, characterized in that: The supporting device according to any one of claims 1 to 4 comprises the following steps: (1) Loading the stacked trays into the tray frame; (2) The second telescopic cylinder extends, and the air pipe connected to the suction cup sucks air so that the suction cup sucks the lowest tray in the loading frame, and then the second telescopic cylinder retracts; (3) The first telescopic cylinder retracts, and the suction cup moves the sucked tray in space and flips to a horizontal state; (4) The second telescopic cylinder is extended, and the air pipe connected to the suction cup stops pumping air, thereby releasing the sucked tray onto the tray placement platform; (5) The first telescopic cylinder is extended, the suction cup moves in space and flips to the initial position, and then the next round of lifting action is performed according to steps (1) to (4).

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