Unpacking mechanism and unpacking machine for low flowability materials

Abstract

This utility model belongs to the technical field of unpacking equipment, and provides an unpacking mechanism and machine for low-flow materials. The unpacking mechanism for low-flow materials includes a flipping conveyor assembly and a cutting assembly. The flipping conveyor assembly has conveying and gripping components on both its upper and lower sides for alternately conveying and gripping material bags. The conveying and gripping components include a conveying component and a gripping component; the conveying component receives and transports the material bags, and the gripping component grips and releases them. The flipping conveyor assembly flips 180 degrees each time, with the upper side being a bag-breaking station and the lower side a material unloading station. The cutting assembly is located on the upper side of the flipping conveyor assembly and includes a lifting component and a cutting tool. The lifting component is fixedly installed, and its power output end is connected to the cutting tool to drive the cutting tool to move up and down. The cutting tool is used to cut the material bag in an "X" shape. The unpacking machine includes the aforementioned unpacking mechanism for low-flow materials.

Description

Technical Field

[0001] This utility model belongs to the field of unpacking equipment technology, specifically relating to an unpacking mechanism and unpacking machine for low-flow materials. Background Technology

[0002] Packaging unpacking machines are widely used in industries such as chemical, pharmaceutical, food, and building materials that require the handling of bagged powdery materials. Currently, packaging unpacking machines primarily use two methods for conveying materials: belt / chain conveyors and overhead conveyors.

[0003] Among them, belt / chain conveyor mechanisms mainly transport materials via conveyor belts or chains. In the corresponding unpacking machines, saw blades are installed on the upper or lower side of the conveyor mechanism. The belt / chain conveyor mechanism drives the material through the saw blades, cutting several openings in the material bag along the conveying direction. Then, the material is unloaded by its own weight. However, for lightweight, low-flow materials and multi-layered bags, it is difficult to completely cut open the multiple layers of the bag. Furthermore, because the material is relatively light, cutting only a few openings along the conveying direction makes it difficult for the material to fall out completely.

[0004] Therefore, in order to completely cut open multi-layered bags and allow lightweight, low-flow materials to fall freely under their own weight, some companies or manufacturers use suspended conveyor mechanisms to transport materials. These mechanisms mainly consist of a track and a gripping mechanism that reciprocates along the track. In the corresponding unpacking machine, a cutting blade is installed under the grippers. This blade consists of four blades and a drive mechanism that moves the four blades closer together or further apart. The four blades are X-shaped in the plane and conical in the vertical direction. During unpacking, the gripping mechanism grabs the material and moves it along the track to the underside of the cutting blade. Then, the gripping mechanism moves down or the cutting blade moves up, piercing the multi-layered bag. The four blades then move away from each other under the drive mechanism, leaving an X-shaped opening in the bag, allowing the lightweight material to fall freely.

[0005] However, with a suspended conveyor mechanism, only one round trip can complete the unpacking operation of materials, which is inefficient. Furthermore, placing the cutting component under the conveyor mechanism makes it easy for materials to accumulate on the cutting component. On the other hand, the drive mechanism in the cutting component is constantly exposed to powdery materials, which affects its service life. Utility Model Content

[0006] This utility model provides a unpacking mechanism and unpacking machine for low-flow materials, aiming to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: In a first aspect, embodiments of the present invention provide an unpacking mechanism for low-flow materials, comprising: The flipping conveyor assembly has conveying and gripping components on both the upper and lower sides for alternately conveying and gripping material bags. The conveying and gripping components include a conveying component and a gripping component. The conveying component is used to receive and transport material bags, and the gripping component is used to grip and release material bags. The flipping conveyor assembly flips 180 degrees each time, with the upper side being the bag breaking station and the lower side being the unloading station. A cutting assembly is provided on the upper side of the flipping conveyor assembly. The cutting assembly includes a lifting assembly and a cutter. The lifting assembly is fixedly installed, and its power output end is connected to the cutter to drive the cutter to move up and down. The cutter is used to cut the material bag in an "X" shape. The flipping conveyor assembly flips the two conveying gripping and releasing assemblies alternately at the bag breaking station and the unloading station. While the conveying gripping and releasing assemblies at the unloading station are unloading material, the conveying gripping and releasing assemblies at the bag breaking station continue to receive the bagged material and perform bag breaking operations through the cutting assembly.

[0008] In conjunction with the first aspect, in one possible implementation of the unpacking mechanism for low-flow materials provided by this utility model, the flipping conveyor assembly includes: The first rotating shaft is used to rotate in conjunction with the casing of the unpacking machine; A tilting frame is connected to the first rotating shaft, and the conveying component and the gripping component are respectively arranged on the upper and lower sides of the tilting frame; The first drive assembly has its power output end connected to the first rotating shaft, and is used to drive the first rotating shaft and the tilting frame to rotate.

[0009] In conjunction with the first aspect, in one possible implementation of the unpacking mechanism for low-flow materials provided by this utility model, the conveying assembly includes: The second drive assembly is connected to the tilting frame; The drive wheel is connected to the power output end of the second drive component; Driven wheels are spaced apart from the driving wheels along the conveying direction and rotate in conjunction with the tilting frame; A conveyor chain, fitted onto the drive wheel and the driven wheel, is used to drive the material bag to move.

[0010] In conjunction with the first aspect, in one possible implementation of the unpacking mechanism for low-flow materials provided by this utility model, the conveying chain consists of several chains, which are spaced apart and arranged in parallel perpendicular to the conveying direction. The driving wheel and the driven wheel correspond one-to-one with the conveying chain, and spikes are fixed on the outer side of the conveying chain.

[0011] In conjunction with the first aspect, in one possible implementation of the unpacking mechanism for low-flow materials provided by this utility model, the gripping and releasing assembly includes two gripping mechanisms, which are spaced apart and arranged in parallel in the vertical conveying direction; The grasping mechanism includes: The second rotating shaft has an axis parallel to the conveying direction and is rotatably engaged with the tilting frame. A barbed hook assembly, comprising multiple barbed hooks, wherein the multiple barbed hooks are spaced apart along the axis of the second rotating shaft; The third drive assembly is connected to the tilting frame, and its power output end is connected to the second rotating shaft. In this case, the opening directions of the barbs in the two gripping mechanisms are opposite, and they rotate about the second rotating axis in opposite directions or towards each other.

[0012] In conjunction with the first aspect, in one possible implementation of the unpacking mechanism for low-flow materials provided by this utility model, the barbed hook group includes a plurality of long barbed hooks and a plurality of short barbed hooks, the long barbed hooks and the short barbed hooks being alternately spaced along the second rotating shaft axis.

[0013] In conjunction with the first aspect, in one possible implementation of the unpacking mechanism for low-flow materials provided by this utility model, a first sealing box is provided in the middle of the flipping frame, and second sealing boxes are provided at both ends respectively. The second driving component is located in the first sealing box, and the third driving component is located in the second sealing box.

[0014] In conjunction with the first aspect, in one possible implementation of the unpacking mechanism for low-flow materials provided by this utility model, the cutting tool includes: The mounting bracket is connected to the power output end of the lifting assembly; A bag-breaking cone is fixedly connected to the center of the mounting frame, and the bottom of the bag-breaking cone is conical. Four guide rails are arranged radially around the bag-breaking cone and are fixedly connected to the mounting frame. Four tool holders correspond one-to-one with the guide rails, and the tool holders slide in conjunction with the guide rails; Four cutting blades are connected to the blade holder one by one, and the blades of the cutting blades are set at an angle; Four drive mechanisms are provided, each corresponding to one of the tool holders and fixedly connected to the mounting bracket. The power output end of each drive mechanism is connected to the tool holder and is used to drive the tool holder to slide back and forth along the guide rail.

[0015] In conjunction with the first aspect, in one possible implementation of the unpacking mechanism for low-flow materials provided by this utility model, the bag-breaking cone includes a connecting rod and a cone head. The upper end of the connecting rod is fixedly connected to the mounting frame, and the lower end of the connecting rod is connected to the cone head. The diameter of the cone bottom of the cone head is larger than the diameter of the lower end of the connecting rod, and the cutting edge of the cutting blade is located at the top and inner edge of the cone head near the connecting rod.

[0016] Secondly, this utility model embodiment also provides a packaging unpacking machine, including the above-mentioned packaging unpacking mechanism for low-flow materials and a machine housing. The flipping conveying component and the lifting component are both connected to the machine housing. The bottom of the machine housing is provided with a hopper and a bag discharge bin. The hopper is located below the unloading station, and the bag discharge bin is located below the tail of the flipping conveying component.

[0017] The beneficial effects of the unpacking mechanism and unpacking machine for low-flow materials provided by this utility model are as follows: Compared with the prior art, the unpacking mechanism and unpacking machine for low-flow materials provided by this utility model, through the alternating operation of the dual conveyor gripping and releasing components, enable unloading and bag breaking to be carried out simultaneously. A single flip cycle can complete two operations (one unloading + one bag breaking), which greatly improves the unpacking efficiency. Moreover, the cutting component is located at the upper bag breaking station, away from the dust generated by the lower unloading, reducing the accumulation of material on the blades and drive mechanism, and extending the service life of the cutting component. At the same time, the X-shaped cutting can completely cut open the multi-layer bag body, and with the self-weight of the unloading station, it ensures that the lightweight, low-flow materials fall off completely, avoiding residue. Attached Figure Description

[0018] Figure 1 A cross-sectional view of the unpacking machine provided in an embodiment of this utility model; Figure 2 A three-dimensional structural diagram of the flipping conveyor component in the unpacking mechanism for low-flow materials provided in this embodiment of the utility model; Figure 3 A front view structural schematic diagram of the flipping conveyor component in the unpacking mechanism for low-flow materials provided in an embodiment of this utility model; Figure 4 For along Figure 3 Cross-sectional view of line AA in the middle; Figure 5 For along Figure 4 Cross-sectional view of the CC line; Figure 6 For along Figure 4 Cross-sectional view of the DD line; Figure 7 For along Figure 3 Cross-sectional view of the middle BB line; Figure 8 For along Figure 7Cross-sectional view of the EE line; Figure 9 A three-dimensional structural diagram of the cutting component in the unpacking mechanism for low-flow materials provided in this embodiment of the utility model. Figure 1 ; Figure 10 A three-dimensional structural diagram of the cutting component in the unpacking mechanism for low-flow materials provided in this embodiment of the utility model. Figure 2 ; Figure 11 for Figure 10 Enlarged view of part A in the image; Explanation of reference numerals in the attached figures: 11. First drive assembly; 12. First rotating shaft; 21. Tilting frame; 22. Support plate; 23. First sealing box; 24. Second sealing box; 31. Second drive assembly; 32. Drive wheel; 33. Driven wheel; 34. Conveyor chain; 341. Spike; 41. Second shaft; 42. Long barbed hook; 43. Short barbed hook; 44. Rocker arm; 45. Drive element; 51. Housing; 52. Hopper; 53. Bag discharge bin; 61. Mounting frame; 621. Connecting rod; 622. Cone head; 63. Guide rail; 64. Tool holder; 65. Cutting blade; 66. Drive mechanism; 67. Lifting assembly. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0023] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0024] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0025] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0026] Please refer to the following: Figures 1 to 11 The unpacking mechanism for low-flow materials provided by this utility model will now be described. The unpacking mechanism for low-flow materials includes a tilting conveyor assembly and a cutting assembly. The tilting conveyor assembly has conveying and gripping components on both its upper and lower sides for alternately conveying and gripping material bags. Each conveying and gripping assembly includes a conveying component and a gripping component; the conveying component receives and transports the material bags, and the gripping component grips and releases them. The tilting conveyor assembly tilts 180 degrees each time, with the upper side being the bag-breaking station and the lower side being the unloading station. The cutting assembly is located on the upper side of the tilting conveyor assembly and includes a lifting component 67 and a cutting tool. The lifting component 67 is fixedly installed, and its power output end is connected to the cutting tool to drive the cutting tool to move up and down. The cutting tool is used to cut the material bag in an "X" shape.

[0027] In this process, by flipping the conveyor assembly, the two conveyor gripping assemblies are alternately placed at the bag breaking station and the unloading station. While the conveyor gripping assemblies at the unloading station are unloading material, the conveyor gripping assemblies at the bag breaking station continue to receive the bagged material and perform bag breaking operations through the cutting assembly.

[0028] After the conveying component on the upper side of the flip conveyor delivers the material bag to the lower side of the cutting component, the gripping component grabs the material bag, and the cutting component moves down to cut the material bag open. Then, the flip conveyor rotates 180 degrees so that the cut material bag faces down, and the material is unloaded by its own weight. At the same time, the conveying gripping component that has turned from the lower side to the upper side continues to work, conveying the empty material bag down and conveying and grabbing the next material bag, and so on in a repeated cycle.

[0029] In actual operation, material bags are transported to the conveying and gripping assembly by means of belt conveyor equipment, push plate conveyor equipment, or manual handling. It should be noted that this embodiment constructs an alternating operation mode through the combination of a "tilting conveyor assembly + upper and lower dual conveyor gripping assembly + upper-mounted cutting assembly". Among them, the "conveying assembly" of the "conveying gripping assembly" is responsible for receiving material bags from the feeding end and transporting them to the workstation (such as the cutting area of ​​the bag breaking workstation, the dropping area of ​​the unloading workstation), and the "gripping assembly" is responsible for fixing the material bags during the tilting process to prevent them from shifting or falling; the "180-degree tilting" of the tilting conveyor assembly is precisely controlled by drive components (such as stepper motors, rotary cylinders, rotary hydraulic cylinders, etc.) to ensure that after each tilting, the upper assembly switches to the bag breaking workstation and the lower assembly switches to the unloading workstation; the "lifting assembly 67" of the cutting assembly (such as a cylinder or lead screw mechanism) drives the "X"-shaped cutter to move down, first piercing the bag body and then unfolding the cut to form a complete X-shaped opening. This structure directly addresses the shortcomings of existing technologies: unlike belt / chain mechanisms that only make a few openings along the conveying direction, the X-shaped cutter can completely cut open multiple layers of bags; unlike the hanging mechanism where the cutting components are placed at the bottom, the upper cutting components are placed far away from the unloading area; unlike the hanging mechanism which operates only once in a single stroke, the dual components alternately achieve "unloading and bag breaking simultaneously".

[0030] The beneficial effects of the unpacking mechanism and unpacking machine for low-flow materials provided by this utility model are as follows: Compared with the prior art, the unpacking mechanism and unpacking machine for low-flow materials provided by this utility model, through the alternating operation of the dual conveyor gripping and releasing components, enable unloading and bag breaking to be carried out simultaneously. A single flip cycle can complete two operations (one unloading + one bag breaking), which greatly improves the unpacking efficiency. Moreover, the cutting component is located at the upper bag breaking station, away from the dust generated by the lower unloading, reducing the accumulation of material on the blades and drive mechanism 66, and extending the service life of the cutting component. At the same time, the X-shaped cutting can completely cut open the multi-layer bag body, and with the self-weight of the unloading station, it ensures that the lightweight, low-flow materials fall off completely, avoiding residue.

[0031] like Figure 2 and Figure 3 As shown in the embodiment of the unpacking mechanism for low-flow materials provided in this utility model, the flipping conveying assembly includes a first rotating shaft 12, a flipping frame 21, and a first driving assembly 11. The first rotating shaft 12 is used to rotate in conjunction with the housing 51 of the unpacking machine. The flipping frame 21 is connected to the first rotating shaft 12, and a conveying assembly and a gripping assembly are respectively arranged on the upper and lower sides of the flipping frame 21. The power output end of the first driving assembly 11 is connected to the first rotating shaft 12 and is used to drive the first rotating shaft 12 and the flipping frame 21 to rotate.

[0032] Both sides of the tilting frame 21 are provided with receiving plates 22, which are fixedly connected to the tilting frame 21 and are used to receive material bags. Spikes 341 protrude from the receiving plates 22. The receiving plates 22 are used to bear the weight of the material bags, which slide on the receiving plates 22 under the drive of the material bag conveying chain 34.

[0033] Specifically, the first rotating shaft 12 rotates with the unpacking machine housing 51 via bearings, providing stable support for the tilting frame 21. The tilting frame 21 is a frame structure (such as a rectangular steel frame), with the conveying component and the gripping component fixed on its upper and lower mounting surfaces respectively, ensuring symmetrical component positions and precise station switching after tilting. The first drive component 11 is connected to the first rotating shaft 12 via a coupling, and can output stable torque to achieve precise 180-degree tilting, avoiding over- or under-tilting that could lead to station misalignment. The first drive component 11 can be a rotary cylinder, or it can be a motor with a reducer or a stepper motor, etc.

[0034] like Figure 3 and Figure 7 As shown in the embodiment of the unpacking mechanism for low-flow materials provided in this utility model, the conveying assembly includes a second drive assembly 31, a drive wheel 32, a driven wheel 33, and a conveying chain 34. The second drive assembly 31 is connected to the tilting frame 21; the drive wheel 32 is connected to the power output end of the second drive assembly 31; the driven wheel 33 is spaced apart from the drive wheel 32 along the conveying direction and rotates in cooperation with the tilting frame 21; the conveying chain 34 is sleeved on the drive wheel 32 and the driven wheel 33 to drive the material bag to move.

[0035] Specifically, the second drive assembly 31 is fixed on the tilting frame 21 and connected to the drive wheel 32 via gears or belts. The drive wheel 32 and the driven wheel 33 are spaced apart along the material conveying direction (e.g., from the front end to the rear end of the tilting frame 21), and both are rotatably engaged with the tilting frame 21 via bearings. The conveyor chain 34, once fitted, forms a closed transmission circuit. The material bag is placed on the conveyor chain 34, and the chain's cyclical movement drives the material bag from the feeding end to the bag-breaking station. This structure avoids the slippage problem of belt conveyors, as chain drive is more suitable for carrying bagged materials. The second drive assembly 31 is an assembly of a motor and reducer, a stepper motor, or a frequency converter motor, etc.

[0036] Chain drives have greater friction and load-bearing capacity than belt drives, and can stably move material bags, preventing lightweight material bags from slipping due to insufficient friction.

[0037] like Figure 3 and Figure 7As shown, in a specific embodiment of the unpacking mechanism for low-flow materials provided in this utility model, there are several conveyor chains 34, which are spaced apart and arranged in parallel perpendicular to the conveying direction. The driving wheel 32 and the driven wheel 33 correspond one-to-one with the conveyor chain 34, and spikes 341 are fixed on the outer side of the conveyor chain 34.

[0038] Specifically, this embodiment optimizes the structure of the conveyor chain 34 based on the above embodiment: several conveyor chains 34 are spaced apart and arranged in parallel (e.g., 2-4 chains) perpendicular to the conveying direction (i.e., the width direction of the material bag), and each chain corresponds to a set of driving wheels 32 and driven wheels 33; the spikes 341 on the outer side of the chain are made of metal and are evenly distributed along the length of the chain, and the spikes 341 can pierce the surface of the material bag. This structure addresses the problem of lightweight material bags easily shifting during conveying by enhancing the positioning effect of the material bag through the spikes 341.

[0039] It should be noted that the spikes 341 can pierce the surface of the material bag, creating a positioning effect and preventing the material bag from shifting along the width of the chain during conveying or flipping, ensuring that the subsequent cutting components can accurately act on the center area of ​​the bag. The multiple spaced chains can evenly bear the weight of the material bag, and together with the positioning of the spikes 341, further reduce the shaking of the material bag, making it especially suitable for conveying multi-layer, lightweight material bags.

[0040] like Figure 3 and Figure 4 As shown in the embodiment of the unpacking mechanism for low-flow materials provided in this utility model, the gripping and releasing assembly includes two gripping mechanisms, which are spaced apart and arranged in parallel in the vertical conveying direction.

[0041] The gripping mechanism includes a second rotating shaft 41, a hook assembly, and a third drive assembly. The axis of the second rotating shaft 41 is parallel to the conveying direction, and the second rotating shaft 41 is rotatably engaged with the tilting frame 21. The hook assembly includes multiple hooks, which are spaced apart along the axis of the second rotating shaft 41. The third drive assembly is connected to the tilting frame 21, and its power output end is connected to the second rotating shaft 41. The hooks in the two gripping mechanisms have opposite opening directions and rotate around the second rotating shaft 41 in opposite directions or towards each other.

[0042] like Figure 5 and Figure 6 As shown, the third drive assembly includes a rocker arm 44 and a drive element 45. One end of the rocker arm 44 is fixedly connected to the second rotating shaft 41; one end of the drive element 45 is rotatably connected to the tilting frame 21, and the other end is rotatably connected to the other end of the rocker arm 44.

[0043] The drive element 45 is a device such as a cylinder, hydraulic cylinder, or electric actuator that can output axial displacement.

[0044] The third drive component can also be a motor, a rotary cylinder, or a rotary hydraulic cylinder, etc.

[0045] It should be noted that the two gripping mechanisms are spaced apart along the vertical conveying direction (corresponding to the width direction of the conveying chain 34) to ensure gripping from both sides of the material bag; the axis of the second rotating shaft 41 is parallel to the conveying direction, and multiple hooks (made of metal) of the hook group are fixed along the length of the rotating shaft, with the hook openings facing opposite directions (e.g., the hook opening of the left gripping mechanism faces left, and the right hook faces right); the third drive component drives the second rotating shaft 41 to rotate. When the hooks of the two gripping mechanisms rotate in opposite directions, the hooks rotate from the inside out and pierce the material bag. Compared to rotating from the outside in, this embodiment effectively opens the material bag while gripping it, facilitating unloading; when rotating in opposite directions, the hooks disengage from the material bag and are released.

[0046] like Figure 5 and Figure 6 As shown, in a specific embodiment of the unpacking mechanism for low-flow materials provided in this utility model, the barbed hook group includes a plurality of long barbed hooks 42 and a plurality of short barbed hooks 43, which are alternately spaced along the axis of the second rotating shaft 41.

[0047] It should be noted that this structure addresses the issue of "surface slippage" when gripping multi-layered material bags by using long and short barbs 43 to create gripping points at different depths. The long barbs 42 can penetrate deep into the inner layers of the multi-layered bag, while the short barbs 43 fix the surface layer, forming a layered positioning system to prevent the multi-layered bag from slipping off during the gripping process.

[0048] like Figure 2 , Figure 5 , Figure 6 and Figure 8 As shown in a specific embodiment of the unpacking mechanism for low-flow materials provided in this utility model, a first sealing box 23 is provided in the middle of the flipping frame 21, and second sealing boxes 24 are provided at both ends. The second drive assembly 31 is disposed in the first sealing box 23, and the third drive assembly is disposed in the second sealing box 24. The sealing boxes can isolate the dust generated during the unloading process, prevent the material from entering the gears and motors of the second and third drive assemblies, prevent component wear or jamming, and extend the service life of the drive assemblies.

[0049] like Figures 9 to 11As shown in the embodiment of the unpacking mechanism for low-flow materials provided in this utility model, the cutting tool includes a mounting frame 61, a bag-breaking cone, four guide rails 63, four knife holders 64, four cutting blades 65, and four drive mechanisms 66. The mounting frame 61 is connected to the power output end of the lifting assembly 67. The bag-breaking cone is fixedly connected to the center of the mounting frame 61, and the bottom of the bag-breaking cone is conical. The four guide rails 63 are arranged radially around the bag-breaking cone and are fixedly connected to the mounting frame 61. The four knife holders 64 correspond one-to-one with the guide rails 63, and the knife holders 64 are in sliding fit with the guide rails 63. The four cutting blades 65 correspond one-to-one with the knife holders 64 and are connected, and the cutting edges of the cutting blades 65 are inclined. The four drive mechanisms 66 correspond one-to-one with the knife holders 64 and are fixedly connected to the mounting frame 61. The power output end of the drive mechanism 66 is connected to the knife holder 64 to drive the knife holder 64 to slide back and forth along the guide rails 63.

[0050] Specifically, the mounting frame 61 is a metal frame structure to reduce material usage while meeting installation space requirements. The mounting frame 61 is fixedly connected to the lifting assembly 67 (such as the piston rod of a cylinder, piston rod of a hydraulic cylinder, or the movable rod of an electric push rod). The tapered structure at the bottom of the bag-breaking cone (cone angle 30-60 degrees) is used to pierce the bag first. Four guide rails 63 are radially distributed around the bag-breaking cone. The blade holder 64 slides with the guide rails 63 via a slider or roller. The cutting blade 65 has an inclined blade to ensure that the blade can penetrate the bag during cutting. The drive mechanism 66 (such as a rodless cylinder) drives the blade holder 64 to slide along the guide rails 63, realizing the "contraction-expansion" action of the blade (when contracted, it is close to the bag-breaking cone; when expanded, it forms an X-shaped cut). This structure addresses the problem of "insufficient bag cutting" in belt mechanisms by achieving complete bag cutting through "first piercing + X-shaped expansion cutting".

[0051] The lifting assembly 67 includes a cylinder and several guide rods. The guide rods are fixedly connected to the mounting bracket 61 and slide in cooperation with the housing 51 of the unpacking machine to ensure the stability of the transmission and prevent the blade from shaking.

[0052] The aforementioned cylinder can also be replaced by an electric actuator, a hydraulic cylinder, etc. In addition, the lifting assembly 67 can also be a large-diameter cylinder, an electric actuator, or a hydraulic cylinder, etc., to overcome lateral forces through a thicker drive rod, so that the mounting frame 61 can maintain stable up and down movement.

[0053] The drive mechanism 66 can be equipped with a rodless cylinder, a screw, or a regular cylinder, and the cutting speed and force can be adjusted according to the thickness and hardness of the material bag, thus improving the adaptability of the equipment.

[0054] Preferably, the drive mechanism 66 is a magnetically coupled rodless cylinder with a slider slidably mounted on the cylinder body. The tool holder 64 is fixedly connected to the slider, and the top of the tool holder 64 is provided with a concave wheel, which is suitable for being locked on the guide rail 63 and rolling along the guide rail 63.

[0055] When breaking the bag, the bag-breaking cone first punctures the bag body, and the four cutting blades spread out at 65 degrees to form an X-shaped cut, which can completely cut open the multi-layer bag body, solving the defect of belt mechanism that only cuts a few openings along the conveying direction, and ensuring that lightweight and low-flow materials fall off completely.

[0056] like Figure 11 As shown, in a specific embodiment of the unpacking mechanism for low-flow materials provided in this utility model, the bag-breaking cone includes a connecting rod 621 and a cone head 622. The upper end of the connecting rod 621 is fixedly connected to the mounting frame 61, and the lower end of the connecting rod 621 is connected to the cone head 622. The diameter of the cone bottom of the cone head 622 is larger than the diameter of the lower end of the connecting rod 621. The cutting edge of the cutting blade 65 is located at the top and inner edge of the cone head 622.

[0057] It should be noted that the inner end of the cutting blade 65 is located inside the cone head 622. The cone head 622 can be used to shield the blade. The tip of the cutting blade 65 is not damaged due to frequent piercing of the bag body, thus ensuring bag breaking efficiency and extending service life.

[0058] Based on the same inventive concept, this utility model embodiment also provides a packaging unpacking machine, including the above-mentioned packaging unpacking mechanism for low flowability materials and a housing 51. The flipping conveying component and the lifting component 67 are both connected to the housing 51. The bottom of the housing 51 is provided with a hopper 52 and a bag discharge bin 53. The hopper 52 is located below the unloading station, and the bag discharge bin 53 is located below the tail of the flipping conveying component.

[0059] Specifically, the housing 51 is a metal frame structure that supports the tilting conveyor assembly and the lifting assembly 67; the hopper 52 is funnel-shaped and located directly below the unloading station to collect materials falling from the unloading station; the bag discharge bin 53 is a rectangular cavity located below the tail of the tilting conveyor assembly (the end of material conveying) to collect empty bags after cutting and unloading. This structure achieves automatic separation of "material and empty bag", forming a complete unpacking process.

[0060] The hopper 52 and the bag discharge bin 53 collect materials and empty bags respectively, eliminating the need for manual separation. Combined with the alternating operation of the flipping conveyor components, a complete automated process of "feeding-bag breaking-unloading-empty bag recycling" is formed, which greatly improves production efficiency.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A packaging unpacking mechanism for low-flowability materials, characterized in that, include: The flipping conveyor assembly has conveying and gripping components on both the upper and lower sides for alternately conveying and gripping material bags. The conveying and gripping components include a conveying component and a gripping component. The conveying component is used to receive and transport material bags, and the gripping component is used to grip and release material bags. The flipping conveyor assembly flips 180 degrees each time, with the upper side being the bag breaking station and the lower side being the unloading station. A cutting assembly is provided on the upper side of the flipping conveyor assembly. The cutting assembly includes a lifting assembly (67) and a cutting tool. The lifting assembly (67) is fixedly installed, and its power output end is connected to the cutting tool to drive the cutting tool to move up and down. The cutting tool is used to cut the material bag in an "X" shape. The flipping conveyor assembly flips the two conveying gripping and releasing assemblies alternately at the bag breaking station and the unloading station. While the conveying gripping and releasing assemblies at the unloading station are unloading material, the conveying gripping and releasing assemblies at the bag breaking station continue to receive the bagged material and perform bag breaking operations through the cutting assembly.

2. The unpacking mechanism for low-flow materials as described in claim 1, characterized in that, The flipping conveyor assembly includes: The first rotating shaft (12) is used to rotate in conjunction with the casing (51) of the unpacking machine; A tilting frame (21) is connected to the first rotating shaft (12), and the conveying component and the gripping component are respectively arranged on the upper and lower sides of the tilting frame (21); The first drive assembly (11) has its power output end connected to the first rotating shaft (12) and is used to drive the first rotating shaft (12) and the tilting frame (21) to rotate.

3. The unpacking mechanism for low-flow materials as described in claim 2, characterized in that, The conveying assembly includes: The second drive assembly (31) is connected to the tilting frame (21); The drive wheel (32) is connected to the power output end of the second drive assembly (31); Driven wheel (33) is spaced apart from drive wheel (32) along the conveying direction and rotates in cooperation with tilting frame (21); A conveyor chain (34) is fitted onto the drive wheel (32) and the driven wheel (33) to drive the material bag to move.

4. The unpacking mechanism for low-flow materials as described in claim 3, characterized in that, The conveying chain (34) consists of several chains, which are spaced apart and arranged in parallel perpendicular to the conveying direction. The driving wheel (32) and the driven wheel (33) correspond one-to-one with the conveying chain (34). Spikes (341) are fixed on the outer side of the conveying chain (34).

5. The unpacking mechanism for low-flow materials as described in claim 3, characterized in that, The gripping and releasing assembly includes two gripping mechanisms, which are spaced apart and arranged in parallel with respect to the vertical conveying direction; The grasping mechanism includes: The second rotating shaft (41) has its axis parallel to the conveying direction, and the second rotating shaft (41) is rotatably engaged with the tilting frame (21); The barbed hook assembly includes multiple barbed hooks, which are spaced apart along the axis of the second rotating shaft (41). The third drive assembly is connected to the tilting frame (21), and its power output end is connected to the second rotating shaft (41); The two gripping mechanisms have hooks with opposite opening directions and rotate about the second pivot (41) in opposite directions or towards each other.

6. The unpacking mechanism for low-flow materials as described in claim 5, characterized in that, The barbed hook assembly includes a number of long barbed hooks (42) and a number of short barbed hooks (43), which are alternately spaced along the axis of the second rotating shaft (41).

7. The unpacking mechanism for low-flow materials as described in claim 5, characterized in that, The flipping frame (21) has a first sealing box (23) in the middle and a second sealing box (24) at each end. The second drive component (31) is located in the first sealing box (23) and the third drive component is located in the second sealing box (24).

8. The unpacking mechanism for low-flow materials as described in claim 1, characterized in that, The cutting tool includes: The mounting bracket (61) is connected to the power output end of the lifting assembly (67); A bag-breaking cone is fixedly connected to the center of the mounting bracket (61), and the bottom of the bag-breaking cone is conical; Four guide rails (63) are arranged radially around the bag-breaking cone and are fixedly connected to the mounting bracket (61); Four tool holders (64) correspond one-to-one with the guide rails (63), and the tool holders (64) and the guide rails (63) are in sliding cooperation; Four cutting blades (65) are connected to the blade holder (64) one by one, and the blades of the cutting blades (65) are set at an angle; Four drive mechanisms (66) correspond one-to-one with the tool holder (64) and are fixedly connected to the mounting bracket (61). The power output end of the drive mechanism (66) is connected to the tool holder (64) to drive the tool holder (64) to slide back and forth along the guide rail (63).

9. The unpacking mechanism for low-flow materials as described in claim 8, characterized in that, The bag-breaking cone includes a connecting rod (621) and a cone head (622). The upper end of the connecting rod (621) is fixedly connected to the mounting bracket (61), and the lower end of the connecting rod (621) is connected to the cone head (622). The diameter of the cone bottom of the cone head (622) is larger than the diameter of the lower end of the connecting rod (621). The cutting edge of the cutting blade (65) is located at the top and inner edge of the cone head (622) near the connecting rod (621).

10. A package unpacking machine, characterized in that, Includes a low-flow material unpacking mechanism and a housing (51) as described in any one of claims 1-9, wherein the flipping conveyor assembly and the lifting assembly (67) are both connected to the housing (51), and the bottom of the housing (51) is provided with a hopper (52) and a bag discharge bin (53), wherein the hopper (52) is located below the unloading station, and the bag discharge bin (53) is located below the tail of the flipping conveyor assembly.

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