Material carrying device and carrying method

Abstract

The invention discloses a material carrying device and a carrying method. The material carrying device comprises a rack, and an overturning platform, an overturning unit and a cutting unit are arranged on the rack; the overturning platform is in a dustpan shape, an opening side is formed at the first end of the overturning platform, and the overturning platform can load and fix a packaging bag filled with materials. The overturning unit is used for driving the overturning platform to swing so as to be obliquely arranged; the cutting unit comprises a mounting plate, a first cutting drive and a cutting knife, the mounting plate is fixedly connected with the overturning platform upwards, the cutting knife is arranged close to the opening side of the overturning platform, and the cutting knife is connected with the mounting plate in a sliding mode in the width direction of the overturning platform and can slide left and right under the action of the first cutting drive; and the head of the packaging bag extending out of the overturning platform is cut. The material carrying device is adopted in the material carrying method. The device is reasonable in structure, the production efficiency is improved, the production cost is reduced, and pollution is avoided.

Description

Technical Field

[0001] This invention relates to the field of material handling technology, specifically to a material handling device and handling method. Background Technology

[0002] In production practice, there are often scenarios where it is necessary to open the bags of packaged materials and transport them to a designated workstation. In the current technology, the work of opening the bags and releasing the materials is usually done manually. This is not only time-consuming and labor-intensive, which is not conducive to reducing labor costs, but also poses a high risk of contamination for production workshops with high hygiene requirements. Furthermore, it greatly increases the production costs that enterprises need to pay to ensure hygiene standards. Summary of the Invention

[0004] This invention discloses a material handling device and method, which solves the technical problems of time-consuming and labor-intensive processes for transferring and releasing materials from packaging bags in existing technologies, which are detrimental to reducing enterprise production costs. It features a reasonable structure, improves production efficiency, reduces production costs, and avoids introducing pollution. The technical solution adopted is as follows:

[0005] A material handling device includes a frame, on which:

[0006] A flipping platform, which is shaped like a sieve and has an open side at the first end, is capable of loading and fixing packaging bags containing materials, and is hinged downward to the frame.

[0007] The tilting unit is used to drive the tilting platform to swing and tilt; that is, to drive the tilting platform to swing and tilt after its connection with the frame.

[0008] The cutting unit includes a mounting plate, a first cutting drive, and a cutting blade. The mounting plate is fixedly connected to the flipping platform upwards. The cutting blade is arranged near the opening side of the flipping platform. The cutting blade is slidably connected to the mounting plate along the width direction of the flipping platform and can slide left and right under the action of the first cutting drive to cut the head of the packaging bag that extends outside the flipping platform.

[0009] Based on the above technical solution, the inner wall of the flipping platform is provided with at least one suction nozzle for negative pressure adsorption and fixation of the packaging bag on the flipping platform.

[0010] Based on the above technical solution, the cutting unit further includes a second cutting drive, which is used to drive the cutting blade to move back and forth.

[0011] Based on the above technical solution, the flipping unit includes a flipping cylinder, which is hinged to the frame, and the piston rod end of the flipping cylinder is hinged to the mounting plate to drive the opening side of the flipping platform to swing up and down.

[0012] Based on the above technical solution, the frame is also provided with a material platform, which is used to fix and place the hopper, and the hopper is used to receive the material in the packaging bag on the flipping platform.

[0013] Based on the above technical solution, the material platform has an upward-opening receiving groove for receiving the hopper, and the bottom of the receiving groove has a protrusion or concave portion for engaging with the concave or protrusion at the bottom of the hopper. Preferably, the hopper and the receiving groove are in clearance fit, which facilitates the placement of the hopper on the material platform. A third drive unit is fixedly provided on the material platform near one axial end of the protrusion or concave portion at the bottom of the receiving groove. The third drive unit includes an electric push rod, a pneumatic cylinder, or a hydraulic cylinder. The piston rod of the third drive unit can abut against the hopper, so that the hopper fits against the side wall of the receiving groove, which facilitates the positioning of the hopper.

[0014] Based on the above technical solution, it also includes a hopper, on which multiple material receiving positions are formed. The material receiving positions have a scoop-shaped outer opening to facilitate the entry of packaging bags containing materials into the material receiving positions. The bottom surface of the material receiving positions has a downward sloping angle from the outside to the inside so that the materials in the packaging bags gather inward.

[0015] Based on the above technical solution, a feeding device is also included. The feeding device includes a feeding drive and a fixing plate. The feeding drive is used to drive the fixing plate to move up and down, left and right, or back and forth. The fixing plate is designed to be connected to or detached from the hopper. When the hopper is driven to move up and down, left and right, or back and forth, the material inside the packaging bag can be completely dropped into the hopper. The fixing plate is also provided with a gripper. The gripper is used to hold the head of the packaging bag to transfer the packaging bag containing the material from the material support position to the flipping platform, or to make the head of the packaging bag abut against the opening side of the flipping platform. The fixing plate is also provided with at least one third suction nozzle. The third suction nozzle is connected to a third air pump through a third pipeline to adsorb the packaging bag with negative pressure.

[0016] A material handling method, employing the material handling device described above, includes the following steps:

[0017] S1. The flipping platform is flipped to an inclined state under the action of the flipping unit, so that the first end of the flipping platform is higher than its second end;

[0018] S2. The packaging bag containing the material is loaded and fixed on the flipping platform so that the material inside the packaging bag gathers towards the second end of the flipping platform.

[0019] S3. When the head of the packaging bag is pulled tight against the opening side of the flipping platform, the cutting blade cuts the packaging bag to form a cut, so that the material in the packaging bag falls downward.

[0020] S4. The flipping platform flips under the action of the flipping unit, so that the first end of the flipping platform is lower than its second end, so that the material in the packaging bag falls into the hopper.

[0021] Based on the above technical solution, after step s2, the flipping unit drives the opening side of the flipping platform to swing up and down at least once, so that the material in the packaging bag is fully gathered towards the second end of the flipping platform; after step s4, the flipping unit drives the opening side of the flipping platform to swing up and down at least once, so that the material in the packaging bag is completely dropped.

[0022] Beneficial effects

[0023] This invention is rationally designed. The flipping platform is used to load and fix packaging bags containing materials. When the first end of the flipping platform is lifted upward under the flipping drive, the materials inside the packaging bag gather towards the tail of the bag, replacing manual handling and facilitating cutting and opening of the packaging bag at the head. When the first end of the flipping platform moves downward under the flipping drive, the materials inside the packaging bag fall outward under gravity, replacing manual material handling. This ingenious design greatly reduces labor costs and improves production efficiency for enterprises. Furthermore, it prevents workers from bringing dust, germs, etc., into production workshops with high hygiene requirements, thus helping to ensure a high pass rate.

[0024] This invention features a clever design that utilizes a tilting platform with its opening side oscillating up and down to assist in the material handling process. To prevent material from remaining at the head of the packaging bag, the tilting platform's opening side oscillates up and down multiple times before cutting the bag head, ensuring production stability. To prevent incomplete material discharge, the tilting platform's opening side oscillates up and down multiple times after material discharge to ensure sufficient material is dispensed.

[0025] In this invention, the cutting blade can move forward and backward, as well as left and right, allowing the head of the packaging bag to separate from the main body after cutting. This avoids incomplete cutting and helps ensure the continuity of the production process. Furthermore, during cutting, the packaging bag is fixed on the flipping platform. When the head of the packaging bag is pulled taut against the opening side, it is in a taut state, facilitating a quick and complete cut by the cutting blade, improving the flatness of the cut edge, and preventing the cut edge from scraping the material during drop.

[0026] In this invention, the frame is also equipped with a material platform for accommodating the hopper, which facilitates temporary storage of the hopper and helps match the production rhythm. This provides convenience for the feeding device to both operate the hopper and transport the packaging bags on the hopper to the turning platform. The hopper has multiple material support positions, and the bottom surface of each support position has a downward sloping angle from the outside to the inside, causing the material inside the packaging bag to gather inwards. This prevents material from remaining at the head of the packaging bag, allowing the feeding device to effectively clamp the head of the packaging bag, resulting in a high degree of automation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 one embodiment of the present invention. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0028] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 ;

[0029] Figure 2 : Figure 1 A schematic diagram of the three-dimensional structure after removing the flipping platform;

[0030] Figure 3 Schematic diagram of the three-dimensional structure of the present invention Figure 2 ;

[0031] Figure 4 A schematic diagram showing a structure in which a packaging bag containing materials is placed on a flipping platform and a hopper is placed on a material platform.

[0032] Figure 5 : A schematic diagram of the feeding device connected to the hopper in this invention;

[0033] Figure 6 : A three-dimensional structural diagram of the feeding device and hopper in this invention; Detailed Implementation

[0034] The following description and accompanying drawings fully illustrate specific embodiments described herein to enable those skilled in the art to practice them. Some embodiments may include or substitute parts and features of other embodiments. The scope of the embodiments herein encompasses the entire scope of the claims and all available equivalents thereof. Throughout this document, the terms “first,” “second,” etc., are used only to distinguish one element from another without requiring or implying any actual relationship or order between the elements. Indeed, a first element can also be referred to as a second element, and vice versa. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a structure, apparatus, or device. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the structure, apparatus, or device that includes said element. The various embodiments described herein are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0035] The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this document to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the document and for 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 the invention. In the description herein, unless otherwise specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0036] In this document, unless otherwise stated, the term "multiple" means two or more.

[0037] In this article, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0038] In this article, the term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0039] A material handling device includes a frame 1, a hopper 7, and a feeding device 8.

[0040] like Figures 1-3 As shown, the frame 1 is equipped with a flipping platform 2, a flipping unit 3, and a cutting unit 4;

[0041] The flipping platform 2 is shaped like a sieve, which facilitates the placement of the packaging bag 100 containing materials onto the flipping platform 2; the flipping platform 2 has an open side at its first end.

[0042] The flipping platform 2 can load and fix packaging bags 100 containing materials. Specifically, the bottom plate of the flipping platform 2 is provided with three first through holes, each of which accommodates a first suction nozzle 101. The first suction nozzle 101 is clearance-fitted with the first through hole and is connected to a first air pump through a first pipe 102. The back plate of the flipping platform 2 is provided with three second through holes, each of which is provided with a second suction nozzle 103. The second suction nozzle 103 is connected to a second air pump through a second pipe 104. Thus, the inner wall surface of the flipping platform 2 is provided with multiple suction nozzles, which can negatively pressure adsorb and fix the packaging bag 100 on the flipping platform 2 to avoid damaging the packaging bag or materials. In this embodiment, the outer end face of the suction nozzles 101 and 103 is basically flush with the inner wall surface of the flipping platform 2, with good flatness, which facilitates loading or removing the packaging bag 100. Among them, the suction nozzles 101 and 103 are made of elastic rubber material, and are tapered with a larger outer surface and a smaller inner surface. This is existing technology, and those skilled in the art can select according to their needs.

[0043] like Figure 2 As shown, the cutting unit 4 includes a mounting plate 41, a first cutting drive 43, a second cutting drive 44, a slide 42, and a cutting blade 45. In this embodiment, the mounting plate 41 is arranged parallel to the bottom surface of the flipping platform 2. Figure 3 As shown, the mounting plate 41 is fixedly connected to the flipping platform 2 upward through several columns. The slide 42 is slidably connected to the mounting plate 41 so that its stroke spans the opening side of the flipping platform 2. The first cutting drive 43 includes a first motor, which is fixed on the mounting plate 41 and drives the slide 42 to slide left and right through a chain drive mechanism. The chain drive mechanism is existing technology and will not be described in detail here.

[0044] The second cutting drive 44 includes a second cylinder fixed to the slide 42, and a cutting blade 45 fixed to the piston rod of the second cylinder to drive the cutting blade 45 to move back and forth, such as... Figure 2 The cutting blade shown is positioned near the opening of the flipping platform 2. When the cutting blade 45 extends forward under the action of the second cutting drive 44 and slides left and right under the action of the first cutting drive 43, it can easily cut the head of the packaging bag 100 extending outside the flipping platform 2. In other embodiments of the present invention, the second cylinder can be replaced by an electric push rod, a hydraulic cylinder, etc.

[0045] like Figure 3As shown, it also includes a lifting drive 10, which includes a lifting cylinder fixed on the mounting plate 41. The lifting cylinder can also be replaced by an electric push rod or a hydraulic cylinder. The piston rod of the lifting cylinder is connected upward to the first pipeline 102 and the first suction nozzle 101. In this way, when or after the material is falling into the packaging bag 100, the lifting cylinder moves up and down, which can make the bottom of the packaging bag 100 move up and down, causing it to shake, so that the material remaining in the packaging bag 100 can fall off quickly, avoiding the situation of incomplete material falling, avoiding waste or the need for manual picking up of the material remaining in the packaging bag 100.

[0046] like Figure 3 As shown, two ear plates 46 are fixed downward on the left and right sides of the mounting plate 41. A horizontally extending shaft is fixed between the two ear plates 46. The shaft passes through the two vertical plates on the frame 1 and is rotatably connected to the two vertical plates through bearings. In this way, the tilting platform 2 is hinged downward to the frame 1, so that the opening side of the tilting platform 2 can swing up and down.

[0047] like Figures 1-4 The tilting unit 3 shown is used to drive the tilting platform 2 to swing and tilt. Specifically, the tilting unit 3 includes a tilting cylinder located near the second end of the tilting platform 2. The tilting cylinder is hinged to the frame 1, and the piston rod end of the tilting cylinder is hinged to the mounting plate 41 to drive the opening side of the tilting platform 2 to swing up and down. In other embodiments of the present invention, the tilting cylinder may also be replaced by an electric push rod, a hydraulic cylinder, etc.

[0048] like Figure 1 and 2 As shown, the frame 1 is also equipped with a material platform 5, which is located below the opening side of the tilting platform 2. The material platform 5 forms an upward-facing receiving groove 51 for receiving the hopper 6. The hopper 6 is used to receive the material in the packaging bag 100 on the tilting platform 2; Figure 1 As shown, the bottom of the receiving groove 51 forms a protrusion 52 or a concave portion, which is used to cooperate with the concave or protrusion of the bottom of the hopper 6. In this embodiment, the bottom of the receiving groove 51 forms a protrusion 52 with a triangular cross section, so that the hopper 6 is automatically positioned after being placed on the material platform 5.

[0049] In this embodiment, the hopper 6 and the receiving groove 51 are fitted with a clearance to facilitate the placement of the hopper 6 on the material platform 5. A third drive unit 9 is fixed on the material platform near one axial end of the bottom protrusion 52 or concave part of the receiving groove 51. The third drive unit 9 includes an electric push rod, a cylinder or a hydraulic cylinder. The piston rod of the third drive unit 9 can abut against the hopper 6, so that the hopper 6 fits against the side wall of the receiving groove 51, which facilitates the complete positioning of the hopper 6, and thus facilitates the connection between the fixing plate 82 in the feeding device 8 and the hopper 6.

[0050] like Figure 6As shown, it also includes a hopper 7, which includes a base 71, a rack 72, and a rack drive 74. The rack 72 is rotatably connected to the fixed base 71. The rack drive 74 is fixed on the base 71 to drive the rack 72 to rotate. The rack 72 includes multiple layers of trays, and each tray forms multiple circumferentially evenly arranged material holding positions 73, so that multiple packaging bags 100 containing materials can be accommodated at one time.

[0051] like Figure 6 As shown, the material support position 73 has a scoop-shaped outer opening to facilitate the entry of the packaging bag 100 containing materials into the material support position 73. Furthermore, the inner bottom surface of the material support position 73 has a downward sloping angle from the outside to the inside, causing the materials inside the packaging bag 100 to gather inwards, thus preventing materials from remaining at the head of the packaging bag 100. This allows the feeding device 8 to effectively clamp the head of the packaging bag 100, resulting in a high degree of automation. Further, the material support position 73 is designed such that when the packaging bag 100 containing materials is placed in the material support position 73, the head of the packaging bag 100 extends outside the material support position 73, facilitating clamping by the feeding drive.

[0052] like Figure 5 and 6 The feeding device 8 shown includes a feeding drive 81 and a fixed plate 82. In this embodiment, the feeding drive 81 includes a robotic arm, and the fixed plate 82 is fixed to the movable end of the robotic arm. Under the action of the robotic arm, the fixed plate 82 completes vertical, horizontal, or forward and backward displacement. In other embodiments of the present invention, the robotic arm can also be replaced by an integral unit formed by a vertical drive unit, a horizontal drive unit, and a forward and backward drive unit. The vertical drive unit is used to drive the fixed plate 82 to move vertically, the horizontal drive unit is used to drive the fixed plate 82 to move horizontally, and the forward and backward drive unit is used to drive the fixed plate 82 to move forward and backward.

[0053] In addition, the fixing plate 82 is designed to be connected to or detached from the hopper 6. Specifically, the fixing plate 82 is connected to the hopper 6 via a quick connector. The quick connector is existing technology and includes a male and a female connector. For example, the male connector is fixed on the hopper 6 and the female connector is fixed on the fixing plate 82. When the fixing plate 82 is connected to the hopper 6 via the quick connector, the hopper 6 can be driven to move up and down, left and right, or back and forth, so that the material in the packaging bag 100 can fall completely into the hopper 6.

[0054] like Figure 6 As shown, the fixed plate 82 is also provided with two grippers 83. The grippers 83 include finger cylinders. The two gripping arms of the finger cylinders can grip the head of the packaging bag 100 to transfer the packaging bag 100 containing materials from the material support position 73 to the flipping platform 2, or pull the head of the packaging bag on the flipping platform 2 downwards so that the packaging bag 100 abuts against the opening side of the flipping platform 2 to facilitate the cutting blade 45 to cut.

[0055] In this embodiment, the fixed plate 82 is also provided with two third suction nozzles 84. The third suction nozzles 84 are connected to the third air pump through a third pipeline to adsorb the packaging bag with negative pressure, so that the empty packaging bag 100 can be removed from the flipping platform 2 after the material is dropped.

[0056] A material handling method, employing the material handling device described above, includes the following steps:

[0057] S1. The flipping platform 2 is flipped to an inclined state under the action of the flipping unit 3, so that the first end of the flipping platform 2 is higher than its second end. Before or after the aforementioned action, the robotic arm moves up and down, left and right, and forward and backward, and controls the gripper 83 to grip the head of the packaging bag 100, taking the packaging bag 100 out of the material rack 72 and transferring it to the flipping platform 2. Among them, the robotic arm grips the packaging bags 100 on the multiple material racks 73 on the material rack 72 in sequence according to the set program. For example, it first grips the multiple packaging bags 100 arranged vertically and vertically facing the feeding device 8, and then the material rack drive 74 drives the material rack 72 to rotate and face the feeding device 8.

[0058] S2. A packaging bag 100 containing materials is loaded and fixed on a flipping platform 2 to gather the materials inside the packaging bag 100 towards the second end of the flipping platform 2. Specifically, the first air pump operates to cause three first suction nozzles 101 to suction the bottom of the packaging bag 100 under negative pressure, and the second air pump operates to cause three second suction nozzles 103 to suction the tail of the packaging bag 100 under negative pressure, thus fixing the packaging bag 100 on the flipping platform 2. Further, the flipping unit 3 then drives the opening side of the flipping platform 3 to swing up and down at least once, so that the materials inside the packaging bag 100 are fully gathered towards the second end of the flipping platform 2, preventing materials from remaining at the head of the packaging bag 100.

[0059] S3. After the head of the packaging bag 100 is pulled and pressed against the opening side of the flipping platform 2, the cutting blade 45 cuts the packaging bag 100 to form a cut, so that the material in the packaging bag 100 falls downward. Specifically, after the robotic arm transfers the packaging bag 100 containing the material to the flipping platform 2, it continuously clamps the head of the packaging bag 100. Then, the robotic arm moves up and down, left and right, and forward and backward. The gripper 82 continuously clamps the head of the packaging bag 100 and places the head of the packaging bag 100 below the flipping platform 2. The body of the packaging bag 100 near the head of the packaging bag 100 abuts against the opening side of the flipping platform 2 to tighten the head of the packaging bag 100.

[0060] Then, under the action of the first cutting drive 43, the slider 42 drives the cutting blade 45 to move to the beginning of its stroke. Then, the second cutting drive 44 drives the cutting blade 45 to extend outward. Then, under the action of the first cutting drive 43, the slider 42 drives the cutting blade 45 to cut the packaging bag 100 and move to the end of its stroke, thus cutting open the packaging bag 100. Then, under the action of the second cutting drive 44, the cutting blade 45 retracts. Then, under the action of the first cutting drive 43, the slider 42 drives the cutting blade 45 to return to the beginning of its stroke.

[0061] Then, the feeding drive 81 drives the gripper 82 to move the cut-off packaging bag 100 head fragments toward the collection box (not shown) and drop the packaging bag 100 head fragments into the collection box.

[0062] S4. The flipping platform 2 flips under the action of the flipping unit 3, so that the first end of the flipping platform 2 is lower than its second end, causing the material in the packaging bag 100 to fall into the hopper 6 under the action of gravity. In this embodiment, before the material falls, the third drive unit 9 pushes the hopper 6 in the receiving groove 51 along the protrusion 52, so that the hopper 6 is in contact with one side wall of the receiving groove 51 to completely position the hopper 6. Then the fixing plate 82 is connected to the hopper 6 through a quick connector. During the material falling process, the materials falling before and after have different falling parabolas. In order to ensure that the material falls completely into the hopper 6, the robotic arm can move the hopper 6 according to the set path to make the material fall completely into the hopper 6. At the same time, since the material falling situation in each packaging bag 100 is roughly the same, the robotic arm can move the hopper according to the fixed set path.

[0063] After the material is discharged, the flipping unit 3 drives the opening side of the flipping platform 2 to swing up and down at least once to ensure that all the material in the packaging bag 100 is discharged and to avoid residue. And / or the lifting drive 10 is activated, so that the first suction nozzle 101 adsorbs and fixes the packaging bag 100 while the bottom of the packaging bag 100 moves up and down to discharge all the material in the packaging bag 100.

[0064] The fixed plate 82 is also equipped with two third suction nozzles. The third suction nozzles are connected to the third air pump through the third pipeline to adsorb the packaging bag with negative pressure. Then the robotic arm moves up and down, left and right, and forward and backward to pick up the packaging bag 100 above the flipping platform. At the same time, the first suction nozzle 101 and the second suction nozzle 103 release the packaging bag and drop the packaging bag 100 into the collection box.

[0065] Furthermore, to compact the waste packaging bags 100 in the collection box, the fixed plate 82 can be used to compact the waste packaging bags 100 in the collection box at a set frequency.

[0066] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A material handling device, characterized in that, Includes a frame (1), on which are provided: The flipping platform (2) is shaped like a sieve and has an open side at the first end. The flipping platform (2) can load and fix a packaging bag (100) containing materials, and the flipping platform (2) is hinged downward to the frame (1). A flipping unit (3) is used to drive the flipping platform (2) to swing so as to tilt. The cutting unit (4) includes a mounting plate (41), a first cutting drive (43), and a cutting blade (45). The mounting plate (41) is fixedly connected to the flipping platform (2) upwards. The cutting blade (45) is arranged near the opening side of the flipping platform (2). The cutting blade (45) is slidably connected to the mounting plate (41) along the width direction of the flipping platform and can slide left and right under the action of the first cutting drive (43) to cut the head of the packaging bag (100) extending outside the flipping platform (2).

2. The material handling device according to claim 1, characterized in that, The inner wall of the flipping platform (2) is provided with at least one suction nozzle (101, 103) for negative pressure adsorption and fixation of the packaging bag (100) on the flipping platform (2).

3. The material handling device according to claim 1, characterized in that, The cutting unit (4) further includes a second cutting drive (44), which is used to drive the cutting blade (45) to move back and forth.

4. The material handling device according to claim 1, characterized in that, The flipping unit (3) includes a flipping cylinder, which is hinged to the frame (1). The piston rod end of the flipping cylinder is hinged to the mounting plate (41) to drive the opening side of the flipping platform (2) to swing up and down.

5. The material handling device according to any one of claims 1 to 4, characterized in that, The frame (1) is also provided with a material platform (5), which is used to fix and place the hopper (6), and the hopper (6) is used to receive the material in the packaging bag (100) on the flipping platform (2).

6. The material handling device according to claim 5, characterized in that, The material platform (5) has an upward-facing receiving groove (51) for receiving the hopper (6), and the bottom of the receiving groove (51) has a protrusion (52) or a recess for cooperating with the recess or protrusion at the bottom of the hopper (6).

7. The material handling device according to claim 6, characterized in that, It also includes a hopper (7), on which a plurality of material holding positions (73) are formed. The material holding positions (73) have a scoop-shaped outer opening to facilitate the entry of the packaging bag (100) containing the material into the material holding position (73). The bottom surface of the material holding position (73) has a downward sloping angle from the outside to the inside so that the material in the packaging bag (100) gathers inward.

8. The material handling device according to claim 7, characterized in that, It also includes a feeding device (8), which includes a feeding drive (81) and a fixing plate (82). The feeding drive (81) is used to drive the fixing plate (82) to move up and down, left and right, or forward and backward. The fixing plate (82) is designed to be connected to or detached from the hopper (6). When the hopper (6) is driven to move up and down, left and right, or forward and backward, the material in the packaging bag (100) can be completely dropped into the hopper (6). 2) The plate is also provided with a gripper (83), which is used to grip the head of the packaging bag (100) to transfer the packaging bag (100) containing the material from the material support position (73) to the flipping platform (2), or to make the head of the packaging bag (100) abut against the opening side of the flipping platform (2); the fixing plate (82) is also provided with at least one third suction nozzle (84), which is connected to the third air pump through a third pipeline to adsorb the packaging bag (100) under negative pressure.

9. A material handling method, characterized in that, The material handling device as described in any one of claims 1-4 and 6-8 is characterized by comprising the following steps: S1. The flipping platform (2) is flipped to an inclined state under the action of the flipping drive (3) so that the first end of the flipping platform (2) is higher than its second end; S2. A packaging bag (100) containing materials is loaded and fixed on a flipping platform (2) so that the materials in the packaging bag (100) gather towards the second end of the flipping platform (2); S3. When the head of the packaging bag (100) is pulled and pressed against the opening side of the flipping platform (2), the cutting blade (45) cuts the packaging bag (100) to form a cut, so that the material in the packaging bag (100) falls downward. S4. The flipping platform (2) is flipped under the action of the flipping unit (3), so that the first end of the flipping platform (2) is lower than its second end, so that the material in the packaging bag (100) falls into the hopper.

10. The material handling method according to claim 9, characterized in that, After step s2, the flipping unit (3) drives the opening side of the flipping platform (2) to swing up and down at least once, so that the material in the packaging bag (100) is fully gathered towards the second end of the flipping platform (2); after step s4, the flipping unit (3) drives the opening side of the flipping platform (2) to swing up and down at least once, so that the material in the packaging bag (100) is completely dropped.

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