Automatic bag opening and closing device and method for bagged raw materials

Abstract

The application relates to the technical field of automatic unpacking, and discloses a bagged raw material automatic opening and collecting integrated device and method, which comprises a support, the top of the support is provided with a bag receiving hopper, the inside of the bag receiving hopper is divided into an upper bag receiving bin and a lower bag receiving bin by a partition, a second plug-in part is arranged on the bag receiving hopper, the plug-in end of the second plug-in part is opposite to the bagged raw material on the partition, a third bag pushing part is arranged on the bag receiving hopper, the pushing end of the third bag pushing part is provided with a third bag pushing plate, a first hollow supporting part is arranged on the support, a material receiving hopper is arranged on the support, a plug-in rod is arranged on the support, a gas blowing pipe is arranged on the support, a cutter structure is movably arranged on the support, the cutting direction of the cutter structure is perpendicular to the plug-in direction of the plug-in rod, a waste bag pushing structure is movably arranged on the support, a wire wheel is arranged on the top plate, and a binding wire is rotatably wound on the wire wheel. The application has the characteristics of high bag breaking efficiency, low labor intensity and batch opening and collecting integrated treatment.

Description

Technical Field

[0001] This invention relates to the field of automated packaging technology, and in particular to an integrated device and method for automatically opening and closing bagged raw materials. Background Technology

[0002] In the industrial production of granular materials such as plastic granules, woven bags or film bags are commonly used for packaging and transportation. Before use, the bags need to be opened to allow the granular material to fall into the hopper or conveying system. Current unpacking methods are mostly manual or semi-automatic, resulting in low efficiency, high dust levels, and high labor intensity.

[0003] While some existing automatic bag-unpacking machines can cut bags and feed materials, they cannot effectively secure the bags, resulting in inaccurate cutting positions. After cutting, the bags are not thoroughly cleaned, leaving material residue inside. Waste bags cannot be automatically sorted, collected, and compressed, requiring manual handling. The equipment is also large, complex in structure, and expensive.

[0004] Patent document CN115258325A discloses an automatic bag-breaking machine and a bag-breaking and unloading method. The automatic bag-breaking machine includes a feeding container with a rotatable tray mechanism and a cutting mechanism at the bottom. A pin insertion mechanism includes several hollow pins that can penetrate the side wall of the feeding container and the material bag. One end of each hollow pin is closed, and the other end is connected to an external air source. Air outlets are provided on the corresponding sections of the hollow pins inside the feeding container. The lower opening of the feeding container is connected to the unloading mechanism. Airflow is injected into the material bag through the air outlets on the hollow pins, causing the material bag to shake. By controlling the external air source, a high-frequency oscillating airflow is formed, which enhances the shaking effect, thereby shaking off the material in the corners of the bag and the material adhering to the inner surface of the bag. This technical solution is designed for breaking individual material bags, but its continuity is not good, and the breaking efficiency is not high. After breaking, the waste bags need to be sorted manually one by one, which increases the labor intensity. Although the technical solution also includes a hollow needle that can blow air, this hollow needle is used to fix the material bag and blow air into it. It plays both the role of fixing the material bag and blowing air into it. The hollow needle also moves back and forth with the first drive mechanism. Every time a material bag comes, the first drive mechanism drives the hollow needle to move back and forth once. The process is cumbersome, the hollow needle is easy to be damaged, and the multiple air outlets on the hollow needle are also easy to be blocked.

[0005] Therefore, existing bag-breaking machines for plastic granules suffer from problems such as low bag-breaking efficiency, high labor intensity, and inability to perform integrated processing of batch bag opening and collection. Summary of the Invention

[0006] In order to solve the above-mentioned technical problems of existing bag-breaking machinery for plastic granules, the present invention provides an automatic bag-opening and bag-collecting integrated device and method for bagged raw materials, which has the characteristics of high bag-breaking efficiency, low labor intensity and the ability to perform batch bag opening and bag collection integrated processing.

[0007] The first technical solution of the present invention: an automatic bag opening and bag closing integrated device for bagged raw materials, including a support frame, a bag receiving hopper at the top of the support frame, the interior of the bag receiving hopper being divided into an upper bag receiving compartment and a lower bag receiving compartment by a separator, the separator being movably arranged relative to the interior of the bag receiving hopper, the separator being a horizontally pull-out sliding partition that moves along a horizontal guide groove on the inner wall of the bag receiving hopper to realize the connection and disconnection between the upper and lower bag receiving compartments; a second insertion member is provided on the bag receiving hopper, the insertion end of the second insertion member being movably arranged inside the bag receiving hopper, the second insertion member moving along the bag receiving hopper... The device features horizontal linear telescopic extension, with the insertion end capable of entering and exiting the bag-receiving hopper, and a telescopic stroke of 100mm to 500mm. The insertion end of the second insert is located above the separator, and its insertion end is opposite to the bagged raw material on the separator. The bag-receiving hopper is equipped with a third bag-pushing component, the pushing end of which has a third bag-pushing plate. The third bag-pushing plate is movably disposed within the bag-receiving hopper and the lower bag-receiving compartment. The support frame is equipped with a first hollowed-out support portion located at the bag-receiving compartment. At the bottom discharge port of the hopper, the bottom of the third bag-pushing plate is close to the first hollow support part; a receiving hopper is provided on the bracket, and the receiving hopper is located below the first hollow support part; several insertion rods are provided on the bracket, and the raw material bag after unloading is located on the insertion rods, with the insertion end of the insertion rod opposite to the third bag-pushing plate; an air blowing pipe is provided on the bracket, with the air blowing end of the air blowing pipe opposite to the third bag-pushing plate; a cutting structure is movably provided on the bracket, and the cutting structure reciprocates linearly along a horizontal direction perpendicular to the axis of the insertion rods, driven by a rodless cylinder and equipped with... A linear guide rail guides the cutting structure, which corresponds to the raw material bag at the insertion end of the insertion rod. The cutting direction of the cutting structure is perpendicular to the insertion direction of the insertion rod. A waste bag pushing structure is movably provided on the bracket, and the pushing direction of the waste bag pushing structure is the same as the extension direction of the insertion rod. A thread wheel is provided on the top plate, and binding thread is rotatably wound on the thread wheel. A freely rotatable thread wheel is installed on the top plate. One end of the binding thread is fixed to the thread wheel, and the other end passes through the thread hole in the top plate and extends to the top of the insertion rod. After the waste bags are piled up, they are manually or automatically bundled together by the binding thread.

[0008] The bracket in this invention serves as the supporting skeleton of the entire device, used to fix and support all other components, ensuring the precise relative positions of each component, providing a stable mechanical foundation, and ensuring smooth and safe operation of the equipment. Specifically, it adopts a rigid frame structure, with functional components connected by welding or bolts. The bag receiving hopper is used to receive and temporarily store bagged raw materials to be unpacked, guiding the bags into the equipment to prevent displacement or falling, improving the convenience of bag feeding and positioning accuracy. Specifically, it adopts a funnel-shaped or square bucket-shaped structure, utilizing gravity to allow the bags to fall naturally and be positioned. The separator divides the internal space of the bag receiving hopper into an upper bag receiving compartment and a lower bag receiving compartment, enabling staged processing of bagged raw materials, avoiding interference between upstream and downstream processes, improving the continuous operation capability of the equipment, and facilitating... For automated control, specifically, movable partitions can be opened and closed under the drive of cylinders or motors to control the timing of the falling of bagged raw materials; the upper bag receiving bin is used to receive the bagged raw materials that have just been put in, temporarily store them, and wait for the separator to open before entering the lower bag receiving bin, realizing a buffer function and adapting to the upstream bag feeding rhythm; the lower bag receiving bin is used to receive the bagged raw materials falling from the upper bag receiving bin and perform further processing such as pushing and inserting the bags, providing operating space for the second inserting component and the third pushing component, ensuring the accurate execution of subsequent insertion, pushing, and cutting actions; the second inserting component in this invention is inserted into the inside of the bagged raw material from the side of the bag receiving hopper, used to adjust the bag from a horizontal state to a vertical state after rotating 90 degrees, and the second inserting component is inserted into the bagged raw material near the side to form a support. After the separator is removed, the bag rotates 90 degrees from a horizontal position to a vertical position under its own weight, using the insertion point as a pivot. This ensures the bag is properly positioned for insertion into the insertion rod and air blowing pipe during the bag pushing process, improving the stability and accuracy of subsequent processes such as bag pushing, bag cutting, and air blowing. The third bag pushing component and the bag pushing plate push the bagged material in the lower bag receiving chamber towards the insertion rod, moving the vertically positioned bagged material to the horizontal insertion position where it is inserted by the insertion rod and air blowing pipe, thus transferring the bagged material to the correct position and preparing for bag opening and unloading. The bag pushing plate slides along the inner wall near the lower bag receiving chamber to push out the bagged material. The first hollow support part is located at the bottom outlet of the bag receiving hopper, used to support the bagged material and provide bottom support during the bag pushing process, while also allowing... The material particles and dust fall off, preventing the bag from falling while ensuring the material smoothly enters the receiving hopper. Specifically, it can be a grid or perforated plate structure, which can both bear weight and allow material to pass through. The receiving hopper is used to receive the plastic granular raw material falling from the bag, collect the material and guide it to downstream conveyor belts or silos, etc., to prevent the material from scattering and improve the collection rate. Specifically, it is a funnel structure that uses gravity to concentrate the material. The insertion rod in this invention is inserted into the pushed raw material bag and fixed it, so that the bag remains in an open state during the opening, blowing and cleaning process, which facilitates the complete flow of material, improves the thoroughness of cleaning, and reduces the residue in the bag. It has a structure of multiple parallel rods with sharp or flat front ends. Under the pushing action of the bag pusher plate, the bagged raw material is inserted into the insertion rod.The air blowing pipe cleans the inside of the bag by blowing compressed air to expel residual particles, which then fall into the receiving hopper, achieving zero or extremely low residue. Specifically, compressed air is controlled by a pulse solenoid valve and inserted into the bag through the air blowing pipe for cleaning. The cutting structure, after the insertion rod is inserted, cuts open the bottom of the raw material bag, allowing material to flow out naturally for quick and clean opening, preventing tearing. This is achieved by a rodless cylinder driving the blade holder along the cutting direction; the blade is a hook-shaped design, cutting perpendicular to the insertion rod to prevent slippage. The waste bag pushing structure pushes the flattened empty bag off the insertion rod, propelling it into the subsequent sorting or compression area for automatic waste bag collection, avoiding manual intervention. Specifically, a cylinder drives a push plate to move along the insertion rod, pushing the waste bag away. The threaded wheel and binding thread on the top plate are used for automatic or semi-automatic binding of the waste bags. Before or during the pushing process, the system assists in bundling the waste bags, making them neat and orderly for easy handling and recycling. Specifically, binding thread is wound onto a reel, with one end fixed and the other end automatically tightened as the waste bags accumulate, or manually tied. The invention involves placing bagged raw materials into the upper bag receiving hopper, inserting a second connector to secure the bag, and opening a divider to change the bag from a horizontal to a vertical position. After the second connector is retracted, the bag falls into the lower bag receiving hopper. A third pusher pushes the bag towards and inserts it into the insertion rod, securing and unfolding the bag. A cutter cuts the bag, and the material falls into the receiving hopper. An air blower cleans any residue inside the bag. When enough waste bags are inserted into the insertion rod, such as 1000, the reel and binding thread assist in bundling the bags, and the waste bag pushing mechanism pushes them out, leaving empty bags behind the insertion rod. This cycle repeats. When the number of waste bags accumulated reaches a preset value of 500-1000, the bundling and pushing action is triggered.

[0009] This invention enables a fully automated process from bag loading, fixing, bag cutting, cleaning to waste bag sorting, requiring no manual intervention and achieving a high degree of automation;

[0010] The second connector is inserted into the bag. After the separator is removed, the bagged material rotates 90 degrees from a horizontal position to a vertical position, preparing for the subsequent third pusher plate to push it onto the insertion rod. The machine uses pulse compressed air blowing combined with external ventilation, resulting in minimal residual material inside the bag, thorough cleaning, and good dust control. It integrates compression, turning, strapping, and pushing, as well as waste bag sorting, achieving high waste bag processing efficiency and facilitating recycling. The machine is small in size, occupies little space, and has a compact structure, making it suitable for various production sites.

[0011] Preferably, the bag-collecting hopper is rotatably mounted on top of the support via a rotating mechanism. This allows the bag-collecting hopper to rotate relative to the support, facilitating the cleaning of internal residues or maintenance, improving equipment maintainability, and reducing the difficulty of manual cleaning. Specifically, the rotating mechanism connects the bag-collecting hopper to the support, and drives the bag-collecting hopper to rotate. The bag-collecting hopper can rotate horizontally or vertically around a first rotating axis, with a rotation angle of 0 to 90 degrees, and is equipped with a mechanical limit and positioning locking structure. This mechanical limit and positioning locking structure is a conventional structure in existing designs that can achieve the limit and positioning locking functions.

[0012] Preferably, the rotating mechanism includes at least one bearing seat, which is disposed on the top of the support. A first rotating shaft is rotatably connected to the bearing seat via a bearing. At least one connecting plate is provided on the first rotating shaft, and the connecting plate is connected to the outer wall of the bag receiving hopper. The rotating mechanism, including the bearing seat, bearing, first rotating shaft, and connecting plate, enables the bag receiving hopper to rotate smoothly, providing rotational support and guidance for the rotation of the bag receiving hopper, thus achieving stable rotation. Specifically, the bearing seat is fixed on the support, the inner ring of the bearing supports the first rotating shaft, and the connecting plate fixes the first rotating shaft to the bag receiving hopper.

[0013] Preferably, the rotating mechanism includes a drive motor mounted on a bracket, with its drive end connected to one end of the first rotating shaft. The drive motor automatically drives the bag-receiving hopper to rotate, achieving automatic flipping without manual operation and improving the degree of automation; the drive motor drives the first rotating shaft, causing the bag-receiving hopper to rotate.

[0014] Preferably, there are 1 to 5 bearing housings. More preferably, there are 2 to 4 bearing housings. Even more preferably, there are 3 bearing housings. The bearing housings are used to support the first rotating shaft, ensuring stability. Multiple bearing housings can evenly distribute the load, prevent the first rotating shaft from bending, improve rotational rigidity and lifespan, and provide multi-point support, which can reduce the span.

[0015] Preferably, there are 1 to 5 connecting plates. More preferably, there are 2 to 4 connecting plates. Even more preferably, there are 3 connecting plates. The connecting plates connect the first rotating shaft and the bag receiving hopper. Multiple connecting plates evenly transmit the rotational torque, avoid stress concentration, prevent deformation of the bag receiving hopper, and provide multi-point fixation, thereby improving the reliability of the connection.

[0016] Preferably, the separator is a separator plate or a separator mesh. The separator separates the upper bag receiving compartment and the lower bag receiving compartment, allowing or blocking the bags from falling, thus achieving buffer control.

[0017] Preferably, the bag receiving hopper is equipped with a first automatic telescopic component, the telescopic end of which is connected to the separator. The first automatic telescopic component can automatically drive the separator to open and close, realize timing control, and link with the preceding and following workstations to improve the level of automation and rhythm control accuracy; the first cylinder pushes the first connecting rod to move horizontally or the first motor drives the first screw to rotate, thereby moving the separator.

[0018] Preferably, there are two first automatic telescopic components, located on both sides of the bag receiving hopper.

[0019] Preferably, the first automatic telescopic component is a structure consisting of a first cylinder and a first connecting rod. The first cylinder is mounted on the bag receiving hopper, one end of the first connecting rod is connected to the piston end of the first cylinder, and the end of the first connecting rod away from the first cylinder is connected to the separator.

[0020] Preferably, the first automatic telescopic component is a structure consisting of a first motor and a first screw. The first motor is mounted on the bag receiving hopper, the first screw is connected to the drive end of the first motor, and the first screw is threadedly connected to the separator.

[0021] Preferably, there is one or two second inserts. The two second inserts are located on both sides of the bag receiving hopper. There can be one or two second inserts, preferably two on the left and right sides; the two second inserts are inserted into the bag from both sides to achieve symmetrical fixation, prevent the bag from tilting or slipping, and stabilize the bag so that it falls onto the first hollow support after being adjusted from a horizontal to a vertical position, thereby improving the stability of subsequent bag pushing and insertion. The symmetrical layout can balance the force.

[0022] Preferably, the receiving bag hopper is provided with a second mounting plate, and the second connector is disposed on the second mounting plate.

[0023] Preferably, the insertion depth of the second connector is 100mm to 500mm. More preferably, the insertion depth of the second connector is 150mm to 450mm. More preferably, the insertion depth of the second connector is 200mm to 400mm. More preferably, the insertion depth of the second connector is 250mm to 350mm. More preferably, the insertion depth of the second connector is 300mm. Limiting the insertion depth controls the length of the insert rod entering the bag, ensuring reliable fixation while preventing penetration of the bag, thus adapting to bags of different sizes.

[0024] Preferably, the second connector is an automatic connector. The automatic connector can automatically complete insertion and withdrawal, synchronized with the equipment cycle, without manual intervention, and the second cylinder or the second motor drives the connector rod to move linearly.

[0025] Preferably, the second insertion component includes a second cylinder, which is mounted on the bag receiving hopper. The piston end of the second cylinder has a second insertion rod, the insertion end of which is tapered or frustoconical. The tapered or frustoconical shape of the second insertion rod reduces insertion resistance, prevents tearing of the bag, allows for smooth insertion without damaging the packaging, and improves the insertion success rate. The small, gradually increasing front end also facilitates penetration.

[0026] Preferably, the second connector includes a second motor, which is mounted on the bag receiving hopper. The drive end of the second motor is provided with a second drive screw, and a second follower screw sleeve is threadedly connected to the second drive screw. The second follower screw sleeve is slidably mounted on the bag receiving hopper through a structure in which a guide groove cooperates with a guide slider. The insertion end of the second follower screw sleeve is a conical structure or a frustum-shaped structure.

[0027] Preferably, a third mounting plate is provided on the outer wall of the bag receiving hopper, and the third bag pushing component is disposed on the third mounting plate.

[0028] Preferably, the number of the third bag-pushing components is 1 to 5. More preferably, the number of the third bag-pushing components is 2 to 4. Even more preferably, the number of the third bag-pushing components is 3. The third bag-pushing components push at multiple points, resulting in more even force. Multiple third bag-pushing components can prevent the bag from deflecting during the pushing process, achieving smooth pushing; multiple third cylinders or third motors drive synchronously.

[0029] Preferably, the third bag pusher is an automatic bag pusher. The third bag pusher provides the pushing force for the third bag pusher plate, achieving automatic pushing, and is linked to the entire machine; it is a linear drive mechanism.

[0030] Preferably, the third pusher plate is a solid plate, a hollow plate, or a mesh plate structure. The third pusher plate contacts and pushes the bag, which can adapt to different bag materials and weights, and stably push the bag into the insertion rod and the air blowing tube.

[0031] Preferably, the third bag pusher includes a third cylinder, which is disposed on the bag receiving hopper. The piston end of the third cylinder is provided with a third push rod, and the end of the third push rod away from the third cylinder is connected to the third bag pusher plate.

[0032] Preferably, the third bag pusher includes a third motor, which is mounted on the bag receiving hopper. The drive end of the third motor is provided with a third drive screw, and a third follower screw sleeve is threadedly connected to the third drive screw. The third follower screw sleeve is slidably mounted on the bag receiving hopper through a structure that cooperates with a guide slider via a guide groove. The end of the third follower screw sleeve away from the third motor is connected to the third bag pusher plate.

[0033] Preferably, the first perforated support part is composed of several parallel first bottom rods, with the gaps between adjacent first bottom rods forming a perforation. The first bottom rods are located at the bottom discharge port of the bag receiving hopper, and the bottom of the third bag pushing plate is close to the first bottom rods. The first perforated support part, composed of several parallel first bottom rods, is used to support the bag while allowing material to fall, preventing the bag from falling and ensuring that particles can pass through, thus achieving integrated support and material passage, wherein the strip-shaped gaps form a perforation.

[0034] Preferably, the first bottom rod is a cylindrical rod structure or a structure whose longitudinal cross-sectional width gradually increases from top to bottom. The first bottom rod being cylindrical or narrower at the top and wider at the bottom can reduce material retention, prevent particles from getting stuck in the gaps, and improve the smoothness of material discharge. The smooth surface or sloping surface can provide good flow guidance.

[0035] Preferably, the first perforated support portion is a mesh plate, wherein the mesh width on the mesh plate is greater than the length or outer diameter of the raw material. The first perforated support portion with a mesh plate structure can also achieve both support and material permeability, and its structure is simple and easy to process.

[0036] Preferably, the width or inner diameter of the receiving hopper gradually decreases along the discharge direction. This gradual decrease in width or inner diameter helps to concentrate the material flow towards the discharge port, preventing material splashing and improving collection efficiency; hence, it is funnel-shaped.

[0037] Preferably, the receiving hopper is equipped with a dust collector, one end of which is located inside the hopper; it includes a fan, the fan's suction port of which is connected to the port of the dust collector located outside the receiving hopper via a connecting pipe. The dust collector and the fan draw in dust, purifying the working environment, reducing dust emissions, and achieving environmental protection and health benefits; wherein the fan generates negative pressure, drawing dust in through the dust collector.

[0038] Preferably, the port of the dust collector cylinder located inside the receiving hopper is an inclined port, with the inclined port facing the bottom of the receiving hopper. The inclined port of the dust collector cylinder optimizes the air intake direction, more effectively sucks up dust, avoids sucking up particles, improves the targeting of dust collection, and the inclined port is aimed at the dust-generating area.

[0039] Preferably, the tilt angle of the tilted port relative to the vertical direction is 15 degrees to 75 degrees. More preferably, the tilt angle of the tilted port relative to the vertical direction is 20 degrees to 70 degrees. More preferably, the tilt angle of the tilted port relative to the vertical direction is 25 degrees to 65 degrees. More preferably, the tilt angle of the tilted port relative to the vertical direction is 30 degrees to 60 degrees. More preferably, the tilt angle of the tilted port relative to the vertical direction is 35 degrees to 55 degrees. More preferably, the tilt angle of the tilted port relative to the vertical direction is 40 degrees to 50 degrees. More preferably, the tilt angle of the tilted port relative to the vertical direction is 45 degrees.

[0040] Preferably, the fan is a centrifugal fan.

[0041] Preferably, the receiving hopper is equipped with an isolation filter screen located below the dust collector. The isolation filter screen prevents large particles from being sucked into the dust collector, protects the fan, reduces clogging, improves system reliability, and provides physical filtration.

[0042] Preferably, the isolation filter has an adjustable mesh size.

[0043] Preferably, the receiving hopper is equipped with a magnetic grid located below the isolation filter. The magnetic grid can adsorb ferromagnetic impurities, prevent metallic foreign objects from entering downstream equipment, protect subsequent equipment, and improve product purity. The magnetic grid is an array of permanent magnets.

[0044] Preferably, the bottom of the receiving hopper is provided with a discharge port, and a moisture sensor is installed on the discharge port, with the sensor's contact located inside the discharge port. The moisture sensor can detect the moisture content of the material and determine whether drying treatment is required to ensure the quality of the raw materials; specifically, resistance or capacitance moisture detection is used.

[0045] Preferably, the moisture sensor has multiple contacts of different lengths.

[0046] Preferably, if the moisture sensor detects that the moisture content of the raw material exceeds the standard, the material is discharged into a dedicated drying hopper.

[0047] Preferably, the bracket is provided with a first mounting plate, the insertion rod is disposed on the first mounting plate, and the air blowing pipe is disposed on the first mounting plate.

[0048] Preferably, the insertion rod is inserted through the bagged raw material, and the blowing end of the air blowing tube is inserted into the bagged raw material.

[0049] Preferably, there are 2 to 10 insertion rods. More preferably, there are 3 to 9 insertion rods. Even more preferably, there are 4 to 8 insertion rods. Even more preferably, there are 5 to 7 insertion rods. Even more preferably, there are 6 insertion rods. Multiple insertion rods and air blowing pipes are inserted at multiple points to unfold the bag, keeping it open after opening to facilitate material flow and improve the thoroughness of unloading. The multiple rods are arranged side by side to form a support surface.

[0050] Preferably, the insertion end of the insertion rod has a gradually increasing cross-sectional width. This gradually increasing width allows for smooth insertion into the bagged material and prevents the bag from falling off. After insertion, it acts as a snap fastener, providing a more secure hold, similar to an inverted cone. The insertion end of the insertion rod is either inverted cone-shaped or hook-shaped, and its gradually increasing cross-section after insertion forms an anti-detachment structure, preventing the bag from falling off during cutting or blowing.

[0051] Preferably, the blowing end of the air tube has an inclined surface structure. This allows for smooth insertion into the bagged raw materials, optimizes the airflow direction, and more effectively removes residues from the bag, reducing residue buildup.

[0052] Preferably, the air blowing pipe uses intermittent pulsed air blowing. The intermittent pulses generate an impact force, shaking off the attached particles and improving the cleaning effect. The pulse solenoid valve controls the compressed air; the air blowing pipe uses intermittent pulsed air blowing with a pulse frequency of 0.5 to 2 Hz and a single blowing duration of 0.2 to 1 second.

[0053] Preferably, the blowing pressure of the air tube is 0.5 MPa to 0.8 MPa. More preferably, the blowing pressure of the air tube is 0.6 MPa to 0.7 MPa.

[0054] Preferably, the angle of the inclined surface of the air blowing tube relative to the horizontal direction is 15 degrees to 75 degrees. More preferably, the angle of the inclined surface of the air blowing tube relative to the horizontal direction is 20 degrees to 70 degrees. More preferably, the angle of the inclined surface of the air blowing tube relative to the horizontal direction is 25 degrees to 65 degrees. More preferably, the angle of the inclined surface of the air blowing tube relative to the horizontal direction is 30 degrees to 60 degrees. More preferably, the angle of the inclined surface of the air blowing tube relative to the horizontal direction is 35 degrees to 55 degrees. More preferably, the angle of the inclined surface of the air blowing tube relative to the horizontal direction is 40 degrees to 50 degrees. More preferably, the angle of the inclined surface of the air blowing tube relative to the horizontal direction is 45 degrees.

[0055] Preferably, there are 1 to 6 air tubes. More preferably, there are 2 to 5 air tubes. Even more preferably, there are 3 to 4 air tubes.

[0056] Preferably, the support is equipped with an air tank, which is connected to an air blowing pipe via an air inlet pipe, and an electronic pulse valve is provided at the connection between the air inlet pipe and the air blowing pipe.

[0057] The air tank and electronic pulse valve store and control the release of compressed air together, providing a stable pulse air source and ensuring the blowing effect. The air tank performs air storage and buffering, while the electronic pulse valve performs pulse control.

[0058] Preferably, the bracket is provided with a top plate, and the bearing seat and the gas tank are both mounted on the top plate.

[0059] Preferably, the top plate is provided with several threading holes through which the binding thread passes. The thread reel and threading holes guide and release the binding thread, assisting in the bundling of waste bags and facilitating manual or automatic knotting. The thread reel rotates to release the thread, and the threading holes guide it.

[0060] Preferably, the bracket is provided with a second hollow support part, which is located on the same plane as the first hollow support part. The second hollow support part has the same structure as the first hollow support part. The second hollow support part is located above the receiving hopper and below the insert rod.

[0061] Preferably, the waste bag pushing structure is a waste bag pushing plate.

[0062] Preferably, the waste bag pushing structure is an automatic waste bag pushing structure. The waste bag pushing plate and the fourth cylinder push the empty bag away from the insertion rod, realizing automatic collection of waste bags, linear pushing, and eliminating the need for manual bag removal.

[0063] Preferably, the waste bag pushing structure includes a fourth cylinder, which is mounted on a bracket. The piston end of the fourth cylinder is provided with a fourth push block, which is connected to the waste bag pushing plate.

[0064] Preferably, there are two fourth cylinders, located on either side of the insertion rod. The two fourth cylinders or the fourth motor, positioned on either side of the insertion rod, push symmetrically to prevent tilting, ensuring smooth detachment of the waste bag, and providing synchronous drive to improve the success rate of ejection.

[0065] Preferably, the waste bag pushing structure includes a fourth motor, which is mounted on a bracket. The driving end of the fourth motor is provided with a fourth driving screw, and a fourth follower screw sleeve is threadedly connected to the fourth driving screw. The fourth follower screw sleeve is connected to the waste bag pushing plate through a structure in which a guide groove cooperates with a guide slider.

[0066] Preferably, there are two fourth motors, located on both sides of the insertion rod.

[0067] Preferably, the cutting structure includes a blade holder, which is movably disposed relative to the support, and a cutting blade is mounted on the blade holder. The blade holder and the cutting blade work together to cut open the bag, achieving automatic bag opening and linear cutting with clean cuts that are not easily torn.

[0068] Preferably, the cutter is made of stainless steel and has a thickness of 2mm to 3mm.

[0069] Preferably, the cutting structure is an automatic cutting structure.

[0070] Preferably, the cutting structure includes a fifth rodless cylinder, which is mounted on a bracket. The driving end of the fifth rodless cylinder is connected to a fifth driving block, which is connected to the blade holder. The fifth rodless cylinder drives the blade holder to move, saving installation space and resulting in a more compact structure. The rodless cylinder has a built-in piston that directly drives the load to move.

[0071] Preferably, the top of the fifth rodless cylinder is provided with a guide plate. The guide plate guides the material or dust, prevents it from falling onto the drive components, protects the cylinder or motor, improves equipment reliability, and serves as a shield and guide.

[0072] Preferably, the cutting structure includes a fifth motor, which is mounted on a bracket. The driving end of the fifth motor is provided with a fifth driving screw, and a fifth follower screw sleeve is threadedly connected to the fifth driving screw. The fifth follower screw sleeve is connected to the cutter holder, and the cutter holder is slidably mounted on the bracket through a structure in which a guide groove cooperates with a guide slider.

[0073] Preferably, the housing of the fifth motor is provided with a guide plate, which covers the fifth drive screw.

[0074] Preferably, the longitudinal section of the guide plate is a triangular structure or a circular arc structure.

[0075] Preferably, the cutter includes a cutter body mounted on a blade holder. Both sides of the cutter body are sickle-shaped surfaces curved towards its centerline. The sickle-shaped cutter performs bidirectional cutting, always hooking onto the bag film during movement to prevent slippage, ensuring a complete cut without breakage. The upper and lower cutting edges are inclined in opposite directions, forming a hook shape. The cutter is a bidirectional sickle-shaped curved blade with the upper and lower cutting edges inclined in opposite directions and a rounded transition at the bend. It always hooks onto the bag film during movement, achieving continuous bidirectional cutting without slippage or tearing of the bag.

[0076] Preferably, the bend in the sickle-shaped surface is rounded.

[0077] Preferably, the sickle-shaped surface is formed by connecting a first blade segment and a second blade segment, with the connection between the first blade segment and the second blade segment being a rounded transition. Both the first blade segment and the second blade segment are inclined relative to the horizontal direction, with the first blade segment located above the second blade segment.

[0078] Preferably, the downward tilt angle of the first cutting edge segment is 10 degrees to 80 degrees, and the upward tilt angle of the second cutting edge segment is 10 degrees to 80 degrees. More preferably, the downward tilt angle of the first cutting edge segment is 15 degrees to 75 degrees, and the upward tilt angle of the second cutting edge segment is 15 degrees to 75 degrees. More preferably, the downward tilt angle of the first cutting edge segment is 20 degrees to 70 degrees, and the upward tilt angle of the second cutting edge segment is 20 degrees to 70 degrees. More preferably, the downward tilt angle of the first cutting edge segment is 25 degrees to 65 degrees, and the upward tilt angle of the second cutting edge segment is 25 degrees to 65 degrees. More preferably, the downward tilt angle of the first cutting edge segment is 30 degrees to 60 degrees, and the upward tilt angle of the second cutting edge segment is 30 degrees to 60 degrees. More preferably, the downward tilt angle of the first cutting edge segment is 35 degrees to 55 degrees, and the upward tilt angle of the second cutting edge segment is 35 degrees to 55 degrees. More preferably, the downward tilt angle of the first blade segment is 40 to 50 degrees, and the upward tilt angle of the second blade segment is 40 to 50 degrees. More preferably, the downward tilt angle of the first blade segment is 45 degrees, and the upward tilt angle of the second blade segment is 45 degrees.

[0079] Preferably, the working cycle of the device is 30 seconds / bag to 60 seconds / bag. More preferably, the working cycle of the device is 35 seconds / bag to 55 seconds / bag. Even more preferably, the working cycle of the device is 40 seconds / bag to 50 seconds / bag. Even more preferably, the working cycle of the device is 45 seconds / bag. The working cycle controls the operating speed of the equipment, balances efficiency and stability, and can adapt to different working conditions. The specific setting is based on a comprehensive consideration of cylinder action time, sensor response, etc. The working cycle of a single bag is 30 to 60 seconds, and the sequence is: feeding, insertion, flipping, pushing the bag, inserting, cutting, blowing air, unloading, and circulation. The action delay of each cylinder is set by the PLC program.

[0080] The second technical solution of the present invention: an automatic bag opening and closing method for bagged raw materials, comprising the following steps,

[0081] (S01) Place the bagged raw material horizontally onto the separator in the bag receiving hopper; Initial feeding: Place the bagged raw material into the equipment so that the bag is temporarily stored on the separator in a horizontal position, waiting for subsequent processing. This is the first step to achieve automatic feeding. The positioning is accurate, which facilitates subsequent insertion and flipping. The separator is used as a temporary support. The bag is placed horizontally with the opening or side facing the direction of the second insertion part.

[0082] (S02) The insertion end of the second connector is inserted into the position of the bagged raw material near the side in step (S01); to fix the bag and prevent it from slipping when the separator is pulled out or flipped. The insertion end is inserted into the bag near the side, not in the center, to provide a fulcrum or fixing point for subsequent flipping, to ensure that the bag will not shift, fall or flip out of control during gravity flipping. The second cylinder or the second motor drives the insertion rod to pierce the bag body, with an appropriate insertion depth, for symmetrical or unilateral fixation.

[0083] (S03) The separator in step (S01) is removed. Under the action of its own gravity, the bagged material on the separator rotates from a horizontal state to a vertical state. This realizes the change of the bag's posture from a horizontal posture to a vertical posture, so that the bag changes from a feeding posture to a posture that is convenient for subsequent pushing and inserting. No additional flipping mechanism is required. It is completed naturally by gravity, which is energy-saving and simple in structure. After the separator is removed, one end of the bag is fixed by the second insertion part, and the other end falls under the action of gravity and rotates around the insertion point to a vertical position.

[0084] (S04) Step (S02) The insertion end of the second connector is released from the insertion of the bagged material, and the bagged material falls on the first hollow support part; the bag is released so that it falls smoothly on the bottom support structure. After the posture change is completed, the bag is transferred to the first hollow support part and waits for horizontal pushing. The bag stands upright or is slightly tilted, with the bottom contacting the support part, which facilitates the subsequent horizontal pushing of the bag; the insertion rod is withdrawn, and the bag falls due to gravity. The first hollow support part supports the bottom of the bag.

[0085] (S05) The third bag pusher pushes the bagged material in step (S04) on the first hollow support part through the third bag pusher plate until the bagged material is inserted into the insertion rod and the air blowing pipe; the vertical bag is pushed horizontally to the insertion station and the insertion rod and the air blowing pipe are inserted to realize the transfer of the bag from the waiting area to the bag opening area. At the same time, the bag is fixed and ready to blow air. The bag is pierced by multiple insertion rods and suspended. The air blowing pipe is inserted into the bag at the same time to prepare for bag cutting and cleaning. The third cylinder or the third motor drives the bag pusher plate to move horizontally, pushes the bag to slide along the first hollow support part, and forces the insertion rod and the air blowing pipe to pierce into the bag body.

[0086] (S06) In step (S05), the third pusher plate returns to the starting position, the cutter structure starts to move, and moves back and forth to cut the bottom of the raw material bag. At the same time, the air blowing pipe blows air into the raw material bag; the bag is opened and unloaded, and the air blowing is used to clean the residue inside the bag. The cutter cuts open the bottom of the bag, and the granular material falls naturally. The air blowing blows out the attached or residual material, so as to achieve complete material unloading and extremely low residue inside the bag, thereby improving the raw material utilization rate; the rodless cylinder drives the sickle-shaped hook knife to move along the slide rail. The cutting direction is perpendicular to the insertion rod. The air blowing pipe blows in intermittently with pulsed compressed air to vibrate and sweep away residual particles.

[0087] (S07) After the raw materials in the bagged raw materials in step (S06) have been completely emptied, the third pusher plate in step (S05) pushes the new bagged raw materials into the insertion rod and the air blowing pipe. This process is repeated until there are enough waste bags of raw materials inserted into the insertion rod and the air blowing pipe. This achieves continuous operation. Waiting for the waste bags to accumulate to a certain number, such as 500 to 1000, before bundling and pushing them out improves processing efficiency and avoids frequent shutdowns for bundling. The insertion rod becomes a temporary storage rack for waste bags. After accumulating to a set number, the subsequent bundling and pushing action is triggered. The device continuously feeds, opens, and unloads bags. When a new bag is pushed in, it will squeeze the old empty bags forward and accumulate them, similar to the threading effect.

[0088] (S08) Stop the feeding action of bagged raw materials in the device, rotate the bag receiving hopper in step (S01) to expose the waste bags of raw materials, and pull the binding line at the thread hole to bind the waste bags of raw materials; after a certain number of waste bags are collected, automatic or semi-automatic bundling is performed to bundle the waste bags piled on the insertion rod into a bundle for easy removal and recycling. The waste bags are neat and compact, which is convenient for subsequent handling or processing; the bag receiving hopper is rotated as a whole by the bearing seat, the first rotating shaft and the drive motor to make room for operation. The thread wheel releases the binding line, passes through the thread hole, and is tightened and knotted manually or automatically;

[0089] (S09) The waste bag pusher plate starts to move, pushing the bundled raw material waste bags from the insertion rod in step (S08); the bundled waste bags are unloaded from the insertion rod, completing a complete waste bag processing cycle. The insertion rod is cleaned to make room for the next batch of waste bags, realizing automatic unloading of waste bags without manual bag removal. The fourth cylinder or the fourth motor drives the waste bag pusher plate to move along the insertion rod, pushing the bundled waste bags away from the end of the insertion rod and falling into the collection container or conveyor belt. The method of this invention realizes a fully automatic cycle from bagged raw material feeding, fixing, flipping, pushing, insertion, bag cutting, unloading, waste bag collection, bundling and pushing out, without manual intervention; from feeding to waste bag pushing out, no manual intervention is required; stacked waste bag management reduces the number of downtimes and is highly efficient and continuous; the combination of cutter and pulse blowing results in extremely low residue inside the bag and thorough cleaning; bundled bags are pushed out for easy recycling, and waste bags are collected neatly; gravity flipping reduces additional power and simplifies the structure.

[0090] The present invention has the following beneficial effects:

[0091] (1) It can realize a fully automatic process from bag loading, fixing, bag cutting, cleaning to waste bag sorting, without manual intervention, and has a high degree of automation;

[0092] The second connector is inserted into the bag. After the separator is removed, the bagged material rotates 90 degrees from a horizontal position to a vertical position, preparing it for the subsequent third pusher plate to push it onto the insertion rod. Pulse compressed air blowing combined with external ventilation ensures minimal residual material inside the bag, thorough cleaning, and good dust control. It integrates compression, turning, strapping, and pushing, as well as waste bag sorting, resulting in high waste bag processing efficiency and easy recycling. The machine is small in size, occupies little space, and has a compact structure, making it suitable for various production sites.

[0093] (2) It realizes a fully automatic cycle from feeding, fixing, turning, pushing, inserting, cutting, unloading, waste bag collection, bundling and pushing out of bagged raw materials, without manual intervention; from feeding to waste bag pushing out, no manual intervention is required; stacked waste bag management reduces the number of downtimes and is highly efficient and continuous; the combination of cutter and pulse blowing results in extremely low residue in the bag and thorough cleaning; after bundling, the bags are pushed out in bundles, which is convenient for recycling and the waste bags are recycled neatly; gravity turning reduces additional power and simplifies the structure. Attached Figure Description

[0094] Figure 1 This is a first three-dimensional structural diagram of the present invention;

[0095] Figure 2 This is a second three-dimensional structural diagram of the present invention;

[0096] Figure 3 This is the third three-dimensional structural diagram of the present invention;

[0097] Figure 4 This is the fourth three-dimensional structural diagram of the present invention;

[0098] Figure 5 This is the fifth three-dimensional structural diagram of the present invention;

[0099] Figure 6 This is the sixth three-dimensional structural diagram of the present invention;

[0100] Figure 7 This is a three-dimensional structural diagram of the present invention after omitting the receiving bag hopper;

[0101] Figure 8 This is a three-dimensional structural diagram of the present invention when the separator is removed;

[0102] Figure 9 This is a three-dimensional structural diagram of the bagged raw materials of the present invention inserted into the insertion rod;

[0103] Figure 10 This is a schematic diagram of the structure at the insertion rod of the present invention;

[0104] Figure 11 This is a schematic diagram of the structure at the first rotating shaft of the present invention;

[0105] Figure 12This is a schematic diagram of the structure of the waste bag pushing plate of the present invention;

[0106] Figure 13 This is a schematic diagram of the air blowing pipe of the present invention;

[0107] Figure 14 This is a schematic diagram of the structure of the fourth cylinder of the present invention;

[0108] Figure 15 This is a structural schematic diagram of the first hollow support portion of the present invention;

[0109] Figure 16 This is a schematic diagram of the structure of the receiving hopper of the present invention;

[0110] Figure 17 This is a schematic diagram of the cutting structure of the present invention;

[0111] Figure 18 This is a schematic diagram of the structure of the cutter of the present invention;

[0112] Figure 19 This is a schematic diagram of the structure at the material discharge port of the present invention;

[0113] Figure 20 This is a schematic diagram of the structure of the isolation filter in this invention;

[0114] Figure 21 This is a schematic diagram of the structure at the magnetic grating of the present invention;

[0115] Figure 22 This is a schematic diagram of the structure of the moisture sensor in this invention.

[0116] The labels in the attached diagram are as follows: 100-bracket, 101-bearing seat, 102-bearing, 103-first rotating shaft, 104-connecting plate, 105-first mounting plate, 106-air tank, 107-electronic pulse valve, 108-top plate, 109-thread reel, 110-threading hole, 200-bag receiving hopper, 201-divider, 202-upper bag receiving compartment, 203-lower bag receiving compartment, 204-second connector, 2041-second cylinder, 2042-second insert rod, 205-third bag pushing component, 2051-third cylinder, 2052-third push rod, 206-third bag pushing plate, 207-first automatic telescopic component, 2071-first cylinder, 2072-first connecting rod, 208-second mounting plate, 209-third mounting plate. 300-Bagged raw materials, 301-Waste bags, 400-First hollow support part, 401-First bottom rod, 402-Second hollow support part, 500-Receiving hopper, 501-Dust collector, 502-Fan, 503-Isolation filter, 504-Magnetic grid, 505-Discharge port, 506-Moisture sensor, 5061-Contact, 600-Insertion rod, 700-Blowing pipe, 800-Cutter structure, 801-Cutter holder, 802-Cutter, 8021-Cutter body, 8022-First blade section, 8023-Second blade section, 803-Fifth rodless cylinder, 804-Fifth drive block, 805-Guide plate, 900-Waste bag pushing structure, 901-Waste bag pushing plate, 902-Fourth cylinder, 903-Fourth push block. Detailed Implementation

[0117] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0118] This device is equipped with position sensors, material detection sensors, counting sensors, and a PLC controller. Each cylinder or motor is linked in a preset sequence. The separator, connector, bag pusher, cutter, and waste bag pushing mechanism are all automatically controlled by the PLC, realizing fully automatic closed-loop control of feeding, positioning, flipping, cutting, cleaning, and bag collection.

[0119] like Figure 1 The automatic bag opening and closing device for bagged raw materials shown includes, as follows: Figure 2 The bracket 100 shown has a top section as shown in the image. Figure 3 The bag hopper 200 shown is shown.

[0120] The bag-collecting hopper is rotatably mounted on top of the support via a rotating mechanism;

[0121] The rotating mechanism includes at least one bearing housing 101, which is disposed on the top of the bracket. A bearing 102 is rotatably connected to the bearing housing via a bearing, such as... Figure 11 The first rotating shaft 103 shown has at least one such as Figure 10The connecting plate 104 shown is connected to the outer wall of the bag receiving hopper. There are 1 to 5 bearing seats; 2 to 4 bearing seats; and 3 bearing seats. There are 1 to 5 connecting plates; 2 to 4 connecting plates; and 3 connecting plates. The rotating mechanism includes a drive motor, which is mounted on a bracket, and the drive end of the drive motor is connected to one end of the first rotating shaft.

[0122] The interior of the receiving bag is divided into sections by the divider 201 as follows: Figure 4 The upper bag receiving compartment 202 and the lower bag receiving compartment 203 shown have a separator that is movable relative to the inside of the bag receiving hopper. The separator is a horizontally pull-out sliding partition that moves along the horizontal guide groove on the inner wall of the bag receiving hopper to realize the connection and disconnection between the upper bag receiving compartment and the lower bag receiving compartment. The separator is a separator plate or a separator mesh.

[0123] The bag receiving hopper is equipped with a first automatic telescopic component 207, the telescopic end of which is connected to the separator; there are two first automatic telescopic components, which are located on both sides of the bag receiving hopper;

[0124] The first automatic telescopic component is a structure consisting of a first cylinder 2071 and a first connecting rod 2072. The first cylinder is mounted on the bag receiving hopper, one end of the first connecting rod is connected to the piston end of the first cylinder, and the end of the first connecting rod away from the first cylinder is connected to the separator; or, the first automatic telescopic component is a structure consisting of a first motor and a first screw. The first motor is mounted on the bag receiving hopper, the first screw is connected to the drive end of the first motor, and the first screw is threadedly connected to the separator.

[0125] The receiving hopper is equipped with a second insert 204. The insertion end of the second insert is movably disposed inside the receiving hopper. The second insert extends and retracts linearly along the horizontal direction of the receiving hopper, and the insertion end can extend into and retract into the receiving hopper, with a extension stroke of 100mm to 500mm. The insertion end of the second insert is located above the separator, and the insertion end of the second insert is opposite to the bagged raw material 300 on the separator. There are two second inserts, located on both sides of the receiving hopper. The receiving hopper is equipped with a second mounting plate 208, and the second inserts are mounted on the second mounting plate. The insertion depth of the second insert is 100mm to 500mm; the insertion depth of the second insert is 150mm to 450mm; the insertion depth of the second insert is 200mm to 400mm; the insertion depth of the second insert is 250mm to 350mm; and the insertion depth of the second insert is 300mm.

[0126] The second connector is an automatic connector; the second connector includes, for example: Figure 8 The second cylinder 2041 shown is mounted on the bag receiving hopper. The piston end of the second cylinder has a second insert rod 2042, the insertion end of which is a conical or frustoconical structure; or...

[0127] The second connector includes a second motor, which is mounted on the bag receiving hopper. The drive end of the second motor is provided with a second drive screw, and a second follower screw sleeve is threadedly connected to the second drive screw. The second follower screw sleeve is slidably mounted on the bag receiving hopper through a structure that cooperates with the guide slider via a guide groove. The insertion end of the second follower screw sleeve is a conical structure or a frustum-shaped structure.

[0128] The bag receiving hopper is equipped with a third bag pushing component 205, and the pushing end of the third bag pushing component is equipped with a third bag pushing plate 206. The third bag pushing plate is movably disposed in the bag receiving hopper and the lower bag receiving compartment. The outer wall of the bag receiving hopper is equipped with a third mounting plate 209, and the third bag pushing component is disposed on the third mounting plate. The number of third bag pushing components is 1 to 5; the number of third bag pushing components is 2 to 4; the number of third bag pushing components is 3; the third bag pushing plate is a solid plate, a hollow plate, or a mesh plate structure.

[0129] The third bag-pushing component is an automatic bag-pushing component; the third bag-pushing component includes a third cylinder 2051, which is mounted on the bag-receiving hopper. The piston end of the third cylinder is provided with a third push rod 2052, and the end of the third push rod away from the third cylinder is connected to the third bag-pushing plate; or, the third bag-pushing component includes a third motor, which is mounted on the bag-receiving hopper. The drive end of the third motor is provided with a third drive screw, and a third follower screw sleeve is threadedly connected to the third drive screw. The third follower screw sleeve is slidably mounted on the bag-receiving hopper through a structure that cooperates with the guide slider via a guide groove. The end of the third follower screw sleeve away from the third motor is connected to the third bag-pushing plate;

[0130] The support is equipped with, for example Figure 15 The first hollow support part 400 shown is located at the bottom discharge port of the bag receiving hopper, and the bottom of the third pusher plate is close to the first hollow support part; the first hollow support part is composed of several parallel first bottom rods 401, and the gap between adjacent first bottom rods forms a hollow; the first bottom rods are located at the bottom discharge port of the bag receiving hopper, and the bottom of the third pusher plate is close to the first bottom rods; the first bottom rods are cylindrical rod structures or structures with longitudinal cross-sectional widths gradually increasing from top to bottom; or, the first hollow support part is a grid plate, and the grid width on the grid plate is greater than the length of the raw material or the outer diameter of the raw material;

[0131] The support is equipped with, for example Figure 16 The receiving hopper 500 shown is located below the first hollow support part; the width or inner diameter of the receiving hopper gradually decreases along the feeding direction;

[0132] The receiving hopper is equipped with a dust collector 501, one end of which is located inside the hopper. It includes a fan 502, the fan's suction port of which is connected to the port of the dust collector located outside the receiving hopper via a connecting pipe. The port of the dust collector inside the receiving hopper is an inclined port, facing the bottom of the hopper. The inclination angle of the inclined port relative to the vertical direction is 15 degrees to 75 degrees; 20 degrees to 70 degrees; 25 degrees to 65 degrees; 30 degrees to 60 degrees; 35 degrees to 55 degrees; 40 degrees to 50 degrees; and 45 degrees. The fan is a centrifugal fan.

[0133] The inside of the receiving hopper is equipped with, for example, Figure 20 The isolation filter 503 shown is located below the dust collector; the isolation filter has an adjustable mesh size.

[0134] The inside of the receiving hopper is equipped with, for example, Figure 21 The magnetic grating 504 shown is located below the isolation filter.

[0135] The bottom of the receiving hopper is equipped with something like... Figure 19 The material discharge port 505 shown has the following features: Figure 22 The moisture sensor 506 shown has a contact 5061 located inside the material inlet; the moisture sensor has multiple contacts of different lengths; if the moisture sensor detects that the moisture content of the raw material exceeds the standard, the material is discharged to a dedicated drying hopper.

[0136] The support is equipped with several insertion rods 600. The raw material bag after unloading is located on the insertion rod, and the insertion end of the insertion rod is opposite to the third pusher plate.

[0137] The support is equipped with, for example Figure 12 The first mounting plate 105 shown has insertion rods and air blowing pipes mounted on it. The insertion rods insert into the bagged raw material, and the air blowing end of the air blowing pipe is inserted into the bagged raw material. There are 2 to 10 insertion rods; 3 to 9 insertion rods; 4 to 8 insertion rods; 5 to 7 insertion rods; and 6 insertion rods. The insertion end of the insertion rod has a structure with a gradually increasing cross-sectional width. The insertion end of the insertion rod is inverted conical or hook-shaped. After being inserted into the bag, the cross-section gradually increases to form an anti-detachment structure, preventing the bag from falling off during cutting and air blowing.

[0138] The support frame is equipped with an air blowing pipe 700, the blowing end of which is opposite to the third pusher plate; the blowing end of the air blowing pipe has an inclined surface structure; the air blowing is intermittent pulse blowing, with a pulse frequency of 0.5-2Hz and a single blowing duration of 0.2-1 second; the blowing pressure of the air blowing pipe is 0.5MPa-0.8MPa; the blowing pressure of the air blowing pipe is 0.6MPa-0.7MPa; the inclined angle of the air blowing pipe relative to the horizontal direction is 15 degrees-75 degrees; the inclination of the air blowing pipe... The angle of the incline of the air tube relative to the horizontal direction is 20 degrees to 70 degrees; the angle of the incline of the air tube relative to the horizontal direction is 25 degrees to 65 degrees; the angle of the incline of the air tube relative to the horizontal direction is 30 degrees to 60 degrees; the angle of the incline of the air tube relative to the horizontal direction is 35 degrees to 55 degrees; the angle of the incline of the air tube relative to the horizontal direction is 40 degrees to 50 degrees; the angle of the incline of the air tube relative to the horizontal direction is 45 degrees; there are 1 to 6 air tubes; there are 2 to 5 air tubes; there are 3 to 4 air tubes; the support is equipped with... Figure 6 The gas cylinder 106 shown is connected to the air blowing pipe via an air inlet pipe. The connection between the air inlet pipe and the air blowing pipe is provided with... Figure 13 The electronic pulse valve 107 shown;

[0139] The support is equipped with, for example Figure 7 The top plate 108 shown is equipped with bearing housing and air tank; the top plate is provided with several wire holes 110 through which the binding wire passes; the bracket is provided with a second hollow support part 402, which is located on the same plane as the first hollow support part and has the same structure as the first hollow support part. The second hollow support part is located above the receiving hopper and below the insertion rod.

[0140] The waste bag pushing structure is as follows Figure 14 The waste bag pushing plate 901 shown is an automatic waste bag pushing structure. The waste bag pushing structure includes a fourth cylinder 902, which is mounted on a bracket. A fourth push block 903 is provided at the piston end of the fourth cylinder, and the fourth push block is connected to the waste bag pushing plate. There are two fourth cylinders, located on both sides of the insertion rod. Alternatively, the waste bag pushing structure includes a fourth motor, which is mounted on a bracket. A fourth drive screw is provided at the drive end of the fourth motor. A fourth follower screw sleeve is threaded onto the fourth drive screw, and the fourth follower screw sleeve is connected to the waste bag pushing plate through a structure that cooperates with a guide slider via a guide groove. There are two fourth motors, located on both sides of the insertion rod.

[0141] The support frame is equipped with movable features such as Figure 17 The cutter structure 800 shown corresponds to the raw material bag at the insertion end of the insertion rod, and the cutting direction of the cutter structure is perpendicular to the insertion direction of the insertion rod.

[0142] The cutting structure includes a blade holder 801, which is movably mounted relative to a support, and a cutting blade 802 is mounted on the blade holder. The cutting blade is made of stainless steel and has a thickness of 2mm to 3mm. The cutting structure is an automatic cutting structure. The cutting structure includes a fifth rodless cylinder 803, which is mounted on the support. The drive end of the fifth rodless cylinder is connected to a fifth drive block 804, which is connected to the blade holder. A guide plate 805 is provided on the top of the fifth rodless cylinder. Alternatively, the cutting structure includes a fifth motor, which is mounted on the support. The drive end of the fifth motor has a fifth drive screw, and a fifth follower sleeve is threaded onto the fifth drive screw. The fifth follower sleeve is connected to the blade holder. The blade holder is slidably mounted on the support through a structure in which a guide groove and a guide slider cooperate. A guide plate is provided on the housing of the fifth motor, covering the fifth drive screw. The longitudinal section of the guide plate is a triangular structure or a circular arc structure.

[0143] Cutting tools include, for example Figure 18 The cutter body 8021 shown is mounted on a blade holder. Both sides of the cutter body are sickle-shaped, curving towards its centerline. The cutter is a bi-directional sickle-shaped hook blade with the upper and lower blade sections inclined in opposite directions and rounded at the bends. During movement, it always hooks onto the bag film, achieving continuous bi-directional cutting without slippage or tearing the bag. The bends of the sickle-shaped blades are rounded. The sickle shape is formed by connecting the first blade section 8022 and the second blade section 8023, with a rounded transition at the connection. Both the first and second blade sections are inclined relative to the horizontal direction, with the first blade section positioned above the second. The downward inclination angle of the first blade section is 10 degrees to 80 degrees, and the upward inclination angle of the second blade section is also 10 degrees to 80 degrees. The first and second cutting edges have different angles: 15° to 75°, 20° to 70°, 25° to 65°, 30° to 60°, 35° to 55°, 40° to 50°, and 45° to 50°. The first and second cutting edges also have different angles: 15° to 75°, 25° to 70°, 20° to 70°, 25° to 75°, 25° to 65°, 25° to 65°, 30° to 60°, 30° to 60°, 35° to 55°, 35° to 55°, 40° to 50°, and 45° to 50°.

[0144] The support frame is equipped with movable features such as Figure 5 The waste bag pushing structure 900 shown has a pushing direction that is the same as the extension direction of the insertion rod; the top plate is provided with... Figure 9The spool 109 shown has binding thread wound around it.

[0145] An automated method for opening and closing bagged raw materials includes the following steps.

[0146] (S01) Place the bagged raw materials horizontally onto the divider inside the bag receiving hopper;

[0147] (S02) The insertion end of the second connector is inserted into the position of the bagged raw material near the edge in step (S01);

[0148] (S03) The separator in step (S01) is removed. The bagged raw material on the separator rotates from a horizontal state to a vertical state under its own gravity.

[0149] (S04) Step (S02) The insertion end of the second connector is released from the insertion of the bagged material, and the bagged material falls on the first hollow support part;

[0150] (S05) The third pusher pushes the bagged material in step (S04) on the first hollow support part through the third pusher plate until the bagged material is inserted into the insertion rod and the air blowing tube;

[0151] (S06) In step (S05), the third pusher plate returns to the starting position, the cutter structure starts to move, and moves back and forth to cut the bottom of the raw material bag. At the same time, the air blowing pipe blows air into the raw material bag.

[0152] (S07) After the raw materials in the bagged raw materials in step (S06) have been completely poured out, the third pusher plate in step (S05) pushes the new bagged raw materials into the insertion rod and the air blowing pipe. This process is repeated until there are enough raw material waste bags inserted into the insertion rod and the air blowing pipe.

[0153] (S08) Stop the feeding action of bagged raw materials in the device, rotate the bag receiving hopper in step (S01) to let out the raw material waste bag, and pull the binding line at the thread hole to bind the raw material waste bag.

[0154] (S09) The waste bag pusher plate starts to move, pushing the raw material waste bags tied in step (S08) out of the insertion rod. The working cycle of the device is 30 seconds / bag to 60 seconds / bag; the working cycle of the device is 35 seconds / bag to 55 seconds / bag; the working cycle of the device is 40 seconds / bag to 50 seconds / bag; the working cycle of the device is 45 seconds / bag; the working cycle of a single bag is 30 to 60 seconds, and the sequence is: feeding, insertion, flipping, pushing the bag, insertion, cutting, blowing air, unloading and circulation. The action delay of each cylinder is set by the PLC program.

[0155] Example 1: An automatic bag opening and bag closing device for bagged raw materials, including a support frame 100, with a bag receiving hopper 200 at the top of the support frame.

[0156] The bag-collecting hopper is rotatably mounted on top of the support via a rotating mechanism;

[0157] The rotating mechanism includes at least one bearing seat 101, which is disposed on the top of the support. A first rotating shaft 103 is rotatably connected to the bearing seat via a bearing 102. At least one connecting plate 104 is provided on the first rotating shaft, and the connecting plate is connected to the outer wall of the bag receiving hopper. There is one bearing seat; there is one connecting plate; the rotating mechanism includes a drive motor, which is disposed on the support, and the drive end of the drive motor is connected to one end of the first rotating shaft.

[0158] The interior of the bag receiving hopper is divided into an upper bag receiving compartment 202 and a lower bag receiving compartment 203 by a partition 201. The partition is movable relative to the interior of the bag receiving hopper. The partition is a horizontally pull-out sliding partition plate that moves along the horizontal guide groove on the inner wall of the bag receiving hopper to realize the connection and disconnection between the upper bag receiving compartment and the lower bag receiving compartment.

[0159] The receiving bag hopper is equipped with a first automatic telescopic component 207, the telescopic end of which is connected to the separator; there is one first automatic telescopic component.

[0160] The first automatic telescopic component is a structure consisting of a first cylinder 2071 and a first connecting rod 2072. The first cylinder is mounted on the bag receiving hopper, one end of the first connecting rod is connected to the piston end of the first cylinder, and the end of the first connecting rod away from the first cylinder is connected to the separator.

[0161] The receiving hopper is equipped with a second insert 204. The insertion end of the second insert is movably disposed inside the receiving hopper. The second insert extends and retracts linearly along the horizontal direction of the receiving hopper, and the insertion end can extend into and retract into the receiving hopper. The extension and retraction stroke is 100mm to 500mm. The insertion end of the second insert is located above the separator, and the insertion end of the second insert is opposite to the bagged raw material 300 on the separator. There is one second insert. The receiving hopper is equipped with a second mounting plate 208, and the second insert is disposed on the second mounting plate. The insertion depth of the insertion end of the second insert is 500mm.

[0162] The second connector is an automatic connector; the second connector includes a second cylinder 2041, which is mounted on the bag receiving hopper, and a second insertion rod 2042 is provided at the piston end of the second cylinder, with the insertion end of the second insertion rod having a conical structure.

[0163] The bag receiving hopper is provided with a third bag pushing component 205, and the pushing end of the third bag pushing component is provided with a third bag pushing plate 206. The third bag pushing plate is movably disposed in the bag receiving hopper and the lower bag receiving compartment. The outer wall of the bag receiving hopper is provided with a third mounting plate 209, and the third bag pushing component is disposed on the third mounting plate. There is one third bag pushing component. The third bag pushing plate is a solid plate.

[0164] The third bag pusher is an automatic bag pusher; the third bag pusher includes a third cylinder 2051, which is set on the bag receiving hopper, and the piston end of the third cylinder is provided with a third push rod 2052, the end of the third push rod away from the third cylinder is connected to the third bag pusher plate.

[0165] The support frame is provided with a first hollow support part 400, which is located at the bottom discharge port of the bag receiving hopper. The bottom of the third bag pushing plate is close to the first hollow support part. The first hollow support part is composed of several parallel first bottom rods 401, and the gap between adjacent first bottom rods forms a hollow. The first bottom rods are located at the bottom discharge port of the bag receiving hopper, and the bottom of the third bag pushing plate is close to the first bottom rods. The first bottom rods are cylindrical rod structures or structures with longitudinal cross-sectional widths that gradually increase from top to bottom.

[0166] The support frame is equipped with a receiving hopper 500, which is located below the first hollow support part; the width or inner diameter of the receiving hopper gradually decreases along the material feeding direction.

[0167] The receiving hopper is equipped with a dust collector 501, one end of which is located inside the receiving hopper; it includes a fan 502, the fan's suction port being connected to the port of the dust collector located outside the receiving hopper via a connecting pipe; the port of the dust collector located inside the receiving hopper is an inclined port, facing the bottom of the receiving hopper; the inclined port's inclination angle relative to the vertical direction is 15 degrees; the fan is a centrifugal fan;

[0168] The receiving hopper is equipped with an isolation filter 503, which is located below the dust collector.

[0169] The receiving hopper is equipped with a magnetic grid 504, which is located below the isolation filter screen.

[0170] The bottom of the receiving hopper is equipped with a discharge port 505, and a moisture sensor 506 is installed on the discharge port. The contact 5061 of the moisture sensor is located inside the discharge port. The moisture sensor has multiple contacts of different lengths. If the moisture sensor detects that the moisture content of the raw material exceeds the standard, the material is discharged to a special drying hopper.

[0171] The support is equipped with several insertion rods 600. The raw material bag after unloading is located on the insertion rod, and the insertion end of the insertion rod is opposite to the third pusher plate.

[0172] The bracket is equipped with a first mounting plate 105, an insertion rod is mounted on the first mounting plate, and an air blowing pipe is mounted on the first mounting plate. The insertion rod inserts into the bagged raw material, and the air blowing end of the air blowing pipe is inserted into the bagged raw material. There are two insertion rods. The insertion end of the insertion rod has a structure with a gradually increasing cross-sectional width. The insertion end of the insertion rod is inverted cone or hook shape. After being inserted into the bag, the cross-section gradually increases to form an anti-detachment structure to prevent the bag from falling off during the cutting and air blowing process.

[0173] The support frame is equipped with an air blowing pipe 700, the air blowing end of which is opposite to the third push bag plate; the air blowing end of the air blowing pipe has an inclined surface structure; the air blowing of the air blowing pipe is intermittent pulse blowing, the air blowing pipe uses intermittent pulse blowing, the pulse frequency is 0.5~2Hz, and the duration of a single blowing is 0.2~1 second; the air blowing pressure of the air blowing pipe is 0.5MPa; the angle of the inclined surface of the air blowing pipe is 15 degrees relative to the horizontal direction; there is one air blowing pipe; the support frame is equipped with an air tank 106, which is connected to the air blowing pipe through an air inlet pipe, and an electronic pulse valve 107 is provided at the connection between the air inlet pipe and the air blowing pipe;

[0174] The support is provided with a top plate 108, and the bearing seat and air tank are both set on the top plate; the top plate is provided with several wire holes 110, and the binding wire passes through the wire holes; the support is provided with a second hollow support part 402, the second hollow support part and the first hollow support part are located on the same plane, the second hollow support part and the first hollow support part have the same structure, the second hollow support part is located above the receiving hopper, and the second hollow support part is located below the insertion rod;

[0175] The waste bag pushing structure is a waste bag pushing plate 901; the waste bag pushing structure is an automatic waste bag pushing structure; the waste bag pushing structure includes a fourth cylinder 902, the fourth cylinder is mounted on a bracket, the piston end of the fourth cylinder is provided with a fourth push block 903, the fourth push block is connected to the waste bag pushing plate; there is one fourth cylinder;

[0176] The support is equipped with a cutting structure 800, which moves linearly back and forth in a horizontal direction perpendicular to the axis of the insertion rod. It is driven by a rodless cylinder and guided by a linear guide rail. The cutting structure corresponds to the raw material bag at the insertion end of the insertion rod, and the cutting direction of the cutting structure is perpendicular to the insertion direction of the insertion rod.

[0177] The cutting structure includes a blade holder 801, which is movably mounted relative to a support, and a cutting blade 802 is mounted on the blade holder. The cutting blade is made of stainless steel and has a thickness of 2mm. The cutting structure is an automatic cutting structure. The cutting structure includes a fifth rodless cylinder 803, which is mounted on the support. The driving end of the fifth rodless cylinder is connected to a fifth driving block 804, which is connected to the blade holder. A guide plate 805 is provided on the top of the fifth rodless cylinder. The longitudinal section of the guide plate is a triangular structure.

[0178] The cutter includes a cutter body 8021, which is mounted on a blade holder. Both sides of the cutter body are sickle-shaped, curving towards the centerline of the cutter body. The cutter is a bi-directional sickle-shaped hook blade with the upper and lower blade sections inclined in opposite directions and the bends transitioning into a rounded arc. During movement, it always hooks onto the bag film, achieving continuous bi-directional cutting without slipping or tearing the bag. The bends of the sickle-shaped blade are rounded. The sickle shape is formed by connecting a first blade section 8022 and a second blade section 8023. The connection between the first and second blade sections is a rounded transition. Both the first and second blade sections are inclined relative to the horizontal direction, with the first blade section located above the second blade section. The downward inclination angle of the first blade section is 10 degrees, and the upward inclination angle of the second blade section is 80 degrees.

[0179] The support frame is equipped with a waste bag pushing structure 900, whose pushing direction is the same as the extension direction of the insertion rod. A thread wheel 109 is mounted on the top plate, with binding thread wound around it. A freely rotating thread wheel is also installed on the top plate; one end of the binding thread is fixed to the thread wheel, and the other end extends through the thread hole in the top plate to above the insertion rod. After the waste bags accumulate, they are manually or automatically bundled together using the binding thread. The device's working cycle is 30 seconds per bag, with a single bag working cycle of 30-60 seconds. The sequence is: feeding, insertion, flipping, pushing, insertion, cutting, blowing air, unloading, and circulation. The delay of each cylinder's action is set by the PLC program.

[0180] Example 2: This example is basically the same as Example 1, except that there are 5 bearing seats; the separator is a separator mesh; the first automatic telescopic component is a structure composed of a first motor and a first screw, the first motor is set on the bag receiving hopper, the first screw is connected to the drive end of the first motor, and the first screw is threadedly connected to the separator; the insertion depth of the insertion end of the second connector is 450mm; the second connector includes a second motor, the second motor is set on the bag receiving hopper, the drive end of the second motor is provided with a second drive screw, and a second follower screw sleeve is threadedly connected to the second drive screw sleeve. The sleeve is slidably mounted on the bag receiving hopper through a structure that cooperates with the guide slide and guide slider. The insertion end of the second follower screw sleeve has a frustum-shaped structure. There are five third bag pushing components. The third bag pushing plate is a hollow plate. The third bag pushing component includes a third motor, which is mounted on the bag receiving hopper. The drive end of the third motor is equipped with a third drive screw, and the third follower screw sleeve is threadedly connected to the third drive screw. The third follower screw sleeve is slidably mounted on the bag receiving hopper through a structure that cooperates with the guide slide and guide slider. The end of the third follower screw sleeve away from the third motor is connected to the third bag pushing plate. The first hollow support part is... The system includes a mesh plate with a mesh width greater than the length or outer diameter of the raw material; an inclined port with a 75-degree inclination angle relative to the vertical direction; an adjustable mesh size filter; 10 insertion rods; an air blowing pressure of 0.8 MPa; a 75-degree inclination angle relative to the horizontal direction; 6 air blowing pipes; and a waste bag pushing structure including a fourth motor mounted on a support. The fourth motor has a fourth drive screw at its drive end, and a fourth follower screw sleeve threadedly connected to the fourth drive screw. The follower screw sleeve is connected to a guide slider via a guide groove. The structure is connected to the waste bag pusher plate; there is one fourth motor; the thickness of the cutter is 3mm; the cutter structure includes a fifth motor, which is mounted on the support. The drive end of the fifth motor is equipped with a fifth drive screw, and a fifth follower screw sleeve is threadedly connected to the fifth drive screw. The fifth follower screw sleeve is connected to the cutter holder, and the cutter holder is slidably mounted on the support through a structure that cooperates with the guide slide and the guide slider; the longitudinal section of the guide plate is an arc structure; the downward tilt angle of the first cutter section is 80 degrees, and the upward tilt angle of the second cutter section is 10 degrees; the working cycle of the device is 60 seconds / bag.

[0181] Example 3: This example is basically the same as Example 1, except that there are 2 bearing seats; 2 connecting plates; 2 first automatic telescopic components, located on both sides of the bag receiving hopper; 2 second insertion components, located on both sides of the bag receiving hopper; the insertion depth of the second insertion component is 100mm; there are 2 third bag pushing components; the tilt angle of the inclined port relative to the vertical direction is 20 degrees; there are 3 insertion rods; the air blowing pressure of the air blowing pipe is 0.6MPa; the tilt angle of the air blowing pipe relative to the horizontal direction is 20 degrees; there are 2 air blowing pipes; there are 2 fourth cylinders, located on both sides of the insertion rods; the downward tilt angle of the first blade section is 15 degrees, and the upward tilt angle of the second blade section is 75 degrees; the working cycle of the device is 35 seconds / bag.

[0182] Example 4: This example is basically the same as Example 2, except that there are 4 bearing seats; 4 connecting plates; two first automatic telescopic components, located on both sides of the bag receiving hopper; two second insertion components, located on both sides of the bag receiving hopper; the insertion depth of the insertion end of the second insertion component is 150mm; and there are 4 third bag pushing components.

[0183] The tilt angle of the inclined port relative to the vertical direction is 70 degrees; the isolation filter has an adjustable mesh size; there are 9 insertion rods; the blowing pressure of the air pipe is 0.7MPa; there are 5 air pipes; there are two fourth motors, located on both sides of the insertion rods; the downward tilt angle of the first blade section is 75 degrees, and the upward tilt angle of the second blade section is 15 degrees; the working cycle of the device is 55 seconds / bag.

[0184] Example 5: This example is basically the same as Example 3, except that there are 3 bearing seats; 3 connecting plates; the insertion depth of the second insert is 300mm; there are 3 third push bag components; the third push bag plate is a mesh structure; the tilt angle of the inclined port relative to the vertical direction is 45 degrees; there are 6 insert rods; the tilt angle of the air blowing pipe relative to the horizontal direction is 45 degrees; there are 3 air blowing pipes; the downward tilt angle of the first blade section is 45 degrees, the upward tilt angle of the second blade section is 45 degrees; the working cycle of the device is 45 seconds / bag.

[0185] The working principle of this invention is as follows:

[0186] The support frame 100 serves as the structural support for the entire device, fixing and supporting all other components, ensuring precise relative positioning of each component, providing a stable mechanical foundation, and ensuring smooth and safe operation of the equipment. It specifically adopts a rigid frame structure, connecting functional components by welding or bolting. The bag receiving hopper 200 receives and temporarily stores bagged raw materials awaiting unpacking, guiding the bags into the equipment to prevent displacement or falling, improving bag insertion convenience and positioning accuracy. It specifically adopts a funnel-shaped or square bucket-shaped structure, utilizing gravity to allow the bags to fall naturally and be positioned. The separator 201 divides the internal space of the bag receiving hopper into an upper bag receiving compartment 202 and a lower bag receiving compartment 203, realizing the processing of bagged raw materials. The phased processing avoids interference between upstream and downstream processes, improves the continuous operation capability of the equipment, and facilitates automated control. Specifically, the movable partition can be opened and closed under the drive of a cylinder or motor to control the timing of the falling of the bagged raw material 300. The upper bag receiving bin 202 is used to receive the bagged raw material that has just been put in, temporarily store it, and wait for the separator 201 to open before it enters the lower bag receiving bin, realizing a buffer function and adapting to the upstream bag feeding rhythm. The lower bag receiving bin 203 is used to receive the bagged raw material falling from the upper bag receiving bin and perform further processing such as pushing and inserting the bag, providing operating space for the second inserting part 204 and the third pushing part 205 to ensure the accurate execution of subsequent inserting, pushing and cutting actions.

[0187] The second insert 204 is inserted into the bagged material 300 from the side of the bag receiving hopper 200. It is used to adjust the bag so that it rotates 90 degrees from a horizontal position to a vertical position. The second insert forms a fulcrum near the side of the bagged material. After the separator is removed, the bag rotates 90 degrees from a horizontal position to a vertical position under its own weight, using this insertion point as a pivot. This ensures that the bag is properly adjusted for insertion into the insertion rod 600 and the air blowing pipe 700 during the bag pushing process, improving the stability and accuracy of subsequent processes such as bag pushing, bag cutting, and air blowing. The third bag pusher 205 and the bag pusher plate 206 push the bagged material in the lower bag receiving chamber 203 towards the insertion rod, pushing the vertically positioned bagged material to the horizontal insertion position and inserting it through the insertion rod and air blowing pipe, thus realizing the position transfer of the bagged material and preparing for bag opening and unloading. Specifically, the third bag pusher plate 206 slides along the inner wall near the lower bag receiving chamber to push out the bagged material; the first hollow support part 400 is located at the bottom discharge port of the bag receiving hopper and is used to support the bagged material, providing bottom support during the bag pushing process. Simultaneously allowing material particles and dust to fall while preventing bags from dropping, and ensuring smooth material entry into the receiving hopper, the hopper can be a grid or perforated plate structure that can both bear weight and allow material to pass through. The receiving hopper 500 is used to receive plastic granular raw materials falling from the bag, collecting the material and guiding it to downstream conveyor belts or silos, preventing material spillage and improving collection efficiency. Specifically, it is a funnel structure that uses gravity to concentrate the material. The insertion rod 600 is inserted into the pushed raw material bag to fix it, allowing the bag to be opened, inflated, and cleaned. The bag remains in an open state during the process, facilitating complete material outflow, improving cleaning thoroughness, and reducing residue inside the bag. It features a multi-bar parallel structure with sharp or flat front ends. Under the pushing action of the third pusher plate, the bagged raw material is inserted into the insertion rods. The air blowing pipe 700 cleans the inside of the bag by blowing compressed air to blow out residual particles, which fall into the receiving hopper 500, achieving zero or extremely low residue of material inside the bag. Specifically, compressed air is controlled by a pulse solenoid valve and inserted into the bag through the air blowing pipe for cleaning.

[0188] After the insertion rod 600 is inserted, the cutter structure 800 cuts open the bottom of the raw material bag, allowing the material to flow out naturally from the bag for quick opening with a clean cut that is not easily torn. Specifically, the fifth rodless cylinder 803 drives the blade holder 801 to move along the insertion rod. The cutter 802 is an irregularly shaped hook, and its cutting direction is perpendicular to the insertion rod, making it less prone to slippage. The waste bag pushing structure 900 pushes the flattened empty bag after cleaning out of the insertion rod, pushing the waste bag 301 into the subsequent sorting or compression area, realizing automatic collection of waste bags and avoiding manual intervention. Specifically, the cylinder drives the push plate to move along the insertion rod direction, pushing the waste bag away from the insertion rod. The thread wheel 109 and binding thread on the top plate 108 are used for automatic or semi-automatic binding of waste bags, assisting in binding before or during the waste bag is pushed out, so that the waste bag is bound. The bags are bundled and neatly arranged for easy handling and recycling. Specifically, binding thread is wound around a spool, with one end fixed and the other end automatically tightened as the waste bags accumulate, or manually tied. The bagged raw materials are placed into the upper bag receiving hopper for bag feeding. The second insert 204 is inserted to fix the bag. After the separator opens, the bag changes from a horizontal to a vertical position. After the second insert 204 is retrieved, the bag falls into the lower bag receiving hopper 203. The third pusher 205 pushes the bag towards and inserts it into the insertion rod, fixing and unfolding the bag. The cutter cuts the bag, and the material falls into the receiving hopper. The air blowing pipe 700 blows air to clean the residue inside the bag. When enough waste bags, such as 1000, are inserted into the insertion rod 600, the spool 109 and binding thread help to tie the waste bags. The waste bag pushing structure pushes the bag out, and the empty bag leaves the insertion rod. This cycle continues.

[0189] The rotating mechanism allows the bag receiving hopper 200 to rotate relative to the support 100, facilitating the cleaning of internal residues or maintenance, improving equipment maintainability, and reducing the difficulty of manual cleaning. Specifically, the rotating mechanism connects the bag receiving hopper and the support, and drives the bag receiving hopper to rotate. The rotating mechanism includes a bearing seat 101, a bearing 102, a first rotating shaft 103, and a connecting plate 104, enabling the bag receiving hopper to rotate smoothly, providing rotational support and guidance for the rotation of the bag receiving hopper, and achieving smooth rotation. Specifically, the bearing seat is fixed on the support, the inner ring of the bearing supports the first rotating shaft, and the connecting plate fixes the first rotating shaft to the bag receiving hopper. The drive motor automatically drives the bag receiving hopper to rotate, achieving automatic flipping without manual operation, improving the degree of automation. The drive motor drives the first rotating shaft, causing the bag receiving hopper to rotate. The separator 201 separates the upper bag receiving chamber 202 and the lower bag receiving chamber 203, allowing or blocking the bags from falling, realizing buffer control.

[0190] The first automatic telescopic component can automatically drive the opening and closing of the separator, realize timing control, and link with the front and rear workstations to improve the level of automation and rhythm control accuracy; the first cylinder 2071 pushes the first connecting rod 2072 to move horizontally or the first motor drives the first screw to rotate, thereby moving the separator.

[0191] There can be one or two second inserters 204, preferably two on the left and right. The two second inserters are inserted into the bag from both sides, achieving symmetrical fixation, preventing the bag from tilting or slipping, and stabilizing the bag so that it falls onto the first perforated support 400 after being adjusted from a horizontal to a vertical position. This improves the stability of subsequent bag pushing and insertion. The symmetrical layout balances the force. The limited insertion depth controls the length of the insert rod entering the bag, ensuring reliable fixation without penetrating the bag, and adapting to different bag sizes. The automatic inserter can automatically complete insertion and withdrawal, synchronized with the equipment cycle, requiring no manual intervention. The second cylinder 2041 or the second motor drives the insert rod in linear motion. The insertion end of the second insert rod 2042 is conical or frustum-shaped, reducing insertion resistance, preventing tearing of the bag, achieving smooth insertion without damaging the packaging, and improving the insertion success rate. The small, gradually increasing front end structure also facilitates penetration.

[0192] The third bag pusher 205 provides multi-point pushing for more even force. Multiple third bag pushers prevent bag deflection during pushing, ensuring smooth pushing. Multiple third cylinders 2051 or third motors drive synchronously. The third bag pushers provide pushing force for the third bag pusher plate 206, enabling automatic pushing and linkage with the whole machine, forming a linear drive mechanism. The third bag pusher plate contacts and pushes the bag, adapting to different bag materials and weights, and stably pushing the bag into the insertion rod 600 and the air blowing pipe 700.

[0193] The first hollow support section 400, composed of several parallel first bottom rods 401, supports the bag while allowing material to fall, preventing the bag from falling and ensuring the passage of particles, thus integrating support and material passage. The strip-shaped gaps form the hollow structure. The first bottom rods are cylindrical or have a narrower top and wider bottom structure, reducing material retention, preventing particles from getting stuck in the gaps, and improving material flow. Smooth or sloping surfaces provide good flow guidance. The first hollow support section with a grid plate structure also achieves support and material passage; its simple structure is easy to manufacture. (Material receiving...) The hopper 500, with its gradually decreasing width or inner diameter, is used to concentrate the material flow towards the discharge port, preventing material splashing and improving collection efficiency; hence, it is funnel-shaped. The dust collector 501 and fan 502 extract dust, purifying the working environment, reducing dust emissions, and achieving environmental and health benefits. The fan generates negative pressure, drawing dust into the dust collector. The inclined port of the dust collector optimizes the airflow direction, more effectively removing dust and avoiding the suction of particles, improving the targeting of dust collection; the inclined port is aligned with the dust-generating area. The isolation filter 503 prevents large particles from being sucked into the dust collector. The system features physical filtration to protect the blower, reduce blockages, and improve system reliability. A magnetic grating 504 adsorbs ferromagnetic impurities, preventing metallic foreign objects from entering downstream equipment, protecting subsequent equipment, and improving product purity. The magnetic grating is an array of permanent magnets. A moisture sensor 506 detects the moisture content of the material, determining whether drying is necessary to ensure raw material quality. Resistive or capacitive moisture detection is used. Multiple insertion rods 600 and air-blowing pipes 700 are inserted at multiple points to open the bag, keeping it open after opening for easy material flow and improved unloading thoroughness. The multiple rods arranged side-by-side form a support surface. The insertion ends, with gradually increasing cross-sectional width, smoothly insert into the bagged raw materials and prevent the bag from falling off. After insertion, they act as a snap, securing the bag more firmly, similar to an inverted cone. Intermittent pulses generate impact force, shaking off attached particles and improving cleaning effectiveness. A pulse solenoid valve controls compressed air. An air tank 106 and an electronic pulse valve 107 store and control the release of compressed air, providing a stable pulse air source to ensure blowing effect. The air tank provides air storage and buffering, while the electronic pulse valve provides pulse control.

[0194] The thread wheel 109 and thread hole 110 guide and release the binding thread, assisting in the bundling of waste bags and facilitating manual or automatic knotting. The thread wheel rotates to release the thread, and the thread hole guides the movement. The waste bag pusher plate and the fourth cylinder 902 push the empty bag away from the insertion rod 600, achieving automatic collection of waste bags and linear pushing without manual bag removal. Two fourth cylinders or a fourth motor are located on both sides of the insertion rod, pushing symmetrically to prevent tilting and ensure smooth detachment of the waste bag. Synchronous drive improves the success rate of bag ejection. The blade holder 801 and the cutter 802 work together to cut open the bag, achieving automatic bag opening and linear cutting with clean cuts that are not easily torn. The fifth rodless cylinder 80... The 3-drive cutter holder 801 moves, saving installation space and featuring a compact structure. The rodless cylinder has a built-in piston that directly drives the load. The guide plate 805 guides materials or dust, preventing them from falling onto the drive components, protecting the cylinder or motor, improving equipment reliability, and serving as a shield and guide. The sickle-shaped cutter performs bidirectional cutting, always hooking onto the bag film during movement to prevent detachment, ensuring complete and unbroken cuts. The upper and lower cutting edges are tilted in opposite directions, forming a hook shape. The working cycle controls the equipment's operating speed, balancing efficiency and stability, and adapting to different working conditions. Specific settings are based on cylinder action time, sensor response, and other factors.

[0195] The bagged raw material 300 is placed horizontally on the separator 201 inside the bag receiving hopper 200. Initial feeding involves placing the bagged raw material into the equipment so that the bag is temporarily stored on the separator in a horizontal position, waiting for subsequent processing. This is the first step to achieve automatic feeding. The positioning is accurate, which facilitates subsequent insertion and flipping. The separator is used as a temporary support, and the bag is placed horizontally with the opening or side facing the direction of the second insertion part 204.

[0196] The insertion end of the second connector 204 is inserted into the bagged raw material 300 near the edge to fix the bag and prevent it from slipping when the separator is removed or flipped. The insertion end is near the edge of the bag, not in the center, to provide a fulcrum or fixing point for subsequent flipping, ensuring that the bag will not shift, fall or flip out of control during gravity flipping. The second cylinder 2041 or the second motor drives the insertion rod to pierce the bag body to an appropriate depth for symmetrical or unilateral fixation.

[0197] When the separator 201 is removed, the bagged material on the separator rotates from a horizontal to a vertical position under its own gravity, realizing the change of the bag's posture from a horizontal to a vertical position. This changes the bag from a feeding posture to a posture that is convenient for subsequent pushing and inserting. No additional flipping mechanism is required; the process is completed naturally by gravity, which is energy-saving and has a simple structure. After the separator is removed, one end of the bag is fixed by the second insertion part 204, and the other end falls under the action of gravity, rotating around the insertion point to a vertical position.

[0198] The insertion end of the second connector 204 is released from the insertion of the bagged material 300, and the bagged material falls onto the first hollow support part 400. The bag is released and falls steadily onto the bottom support structure. After completing the posture change, the bag is transferred to the first hollow support part and waits for horizontal pushing. The bag stands upright or is slightly tilted, with the bottom contacting the support part, which facilitates subsequent horizontal pushing of the bag. The insertion rod is withdrawn, and the bag falls due to gravity. The first hollow support part supports the bottom of the bag.

[0199] The third bag pusher 205 pushes the bagged material 300 on the first hollow support part 400 through the third bag pusher plate 206 until the bagged material is inserted into the insertion rod 600 and the air blowing pipe 700. The vertical bag is pushed horizontally to the insertion station and the insertion rod and air blowing pipe are inserted to realize the transfer of the bag from the waiting area to the bag opening area. At the same time, the bag is fixed and ready to be blown. The bag is pierced by multiple insertion rods and suspended. The air blowing pipe is inserted into the bag at the same time to prepare for bag cutting and cleaning. The third cylinder 2051 or the third motor drives the bag pusher plate to move horizontally, pushing the bag to slide along the first hollow support part 400, forcing the insertion rod and air blowing pipe to pierce into the bag body.

[0200] The third pusher plate 206 returns to the starting position, the cutter structure starts to move, and the back and forth motion cuts the bottom of the raw material bag. At the same time, the air blowing pipe 700 blows air into the raw material bag to open the bag and unload the material. The air blowing is used to clean the residue inside the bag. The cutter cuts the bottom of the bag, and the granular material falls naturally. The air blowing blows out the attached or residual material, so as to achieve complete material unloading and extremely low residue inside the bag, thereby improving the raw material utilization rate. The fifth rodless cylinder 803 drives the sickle-shaped hook knife to move along the slide rail. The cutting direction is perpendicular to the insertion rod 600. The air blowing pipe blows in intermittently with pulsed compressed air to vibrate and sweep away residual particles.

[0201] After the raw material in bagged material 300 is completely emptied, the third pusher plate 206 pushes new bagged raw material into the insertion rod 600 and the air blowing pipe 700. This process is repeated until a sufficient amount of waste raw material bags are inserted into the insertion rod and the air blowing pipe, thus achieving continuous operation. The waste bags are allowed to accumulate to a certain number, such as 500 to 1000, before being bundled and pushed out, improving processing efficiency and avoiding frequent shutdowns for bundling. The insertion rod becomes a temporary storage rack for waste bags 301, triggering subsequent bundling and pushing actions after a set number is accumulated. The device continuously feeds, opens, and unloads bags. When a new bag is pushed in, it will squeeze the old empty bags forward and accumulate, similar to a stringing effect.

[0202] The device stops the feeding of bagged raw material 300, rotates the bag receiving hopper 200 to release the waste bags, and pulls the binding line at the thread hole 110 to bind the waste bags. After a certain number of waste bags are collected, they are automatically or semi-automatically bundled together, making it easy to take them out and recycle them. The waste bags are neat and compact, which is convenient for subsequent handling or processing. The bag receiving hopper 200 is driven to rotate as a whole by the bearing seat 101, the first rotating shaft 103 and the drive motor to make room for operation. The thread wheel releases the binding line, which passes through the thread hole and is tightened and knotted manually or automatically.

[0203] The waste bag pusher plate 901 starts to move, pushing the bundled raw material waste bags out of the insertion rod 600, and unloading the bundled waste bags 301 from the insertion rod, completing a complete waste bag processing cycle. The insertion rod is then cleaned to make room for the next batch of waste bags, realizing automatic unloading of waste bags without manual bag removal. The fourth cylinder 902 or the fourth motor drives the waste bag pusher plate to move along the direction of the insertion rod, pushing the bundled waste bags away from the end of the insertion rod and falling into the collection container or conveyor belt.

Claims

1. An automatic bag opening and closing device for bagged raw materials, characterized by: The system includes a support frame (100), a bag receiving hopper (200) at the top of the support frame, the interior of the bag receiving hopper being divided into an upper bag receiving compartment (202) and a lower bag receiving compartment (203) by a partition (201), the partition being movably disposed relative to the interior of the bag receiving hopper; a second insert (204) is provided on the bag receiving hopper, the insertion end of the second insert being movably disposed inside the bag receiving hopper, the insertion end of the second insert being located above the partition, the insertion end of the second insert being opposite to the bagged raw material (300) on the partition; a third pusher (205) is provided on the bag receiving hopper, the pushing end of the third pusher being provided with a third pusher plate (206), the third pusher plate being movably disposed inside the bag receiving hopper, the third pusher plate being movably disposed inside the lower bag receiving compartment; a first hollow support part (400) is provided on the support frame, the first hollow support part being located at the bottom discharge port of the bag receiving hopper. The bottom of the third pusher plate is close to the first hollow support part; the support is provided with a receiving hopper (500), which is located below the first hollow support part; the support is provided with several insertion rods (600), the unloaded raw material bag is located on the insertion rod, and the insertion end of the insertion rod is opposite to the third pusher plate; the support is provided with an air blowing pipe (700), the air blowing end of the air blowing pipe is opposite to the third pusher plate; the support is movably provided with a cutting structure (800), the cutting structure corresponds to the raw material bag at the insertion end of the insertion rod, and the cutting direction of the cutting structure is perpendicular to the insertion direction of the insertion rod; the support is movably provided with a waste bag pushing structure (900), the pushing direction of the waste bag pushing structure is the same as the extension direction of the insertion rod; the top of the support (100) is provided with (108), the top plate is provided with a thread wheel (109), and the thread wheel is wound with binding thread.

2. The automatic bag opening and closing device for bagged raw materials according to claim 1, characterized in that: The bag receiving hopper is rotatably mounted on the top of the support via a rotating mechanism; the rotating mechanism includes at least one bearing seat (101), the bearing seat (101) is mounted on the top of the support, and a first rotating shaft (103) is rotatably connected to the bearing seat via a bearing (102), and at least one connecting plate (104) is provided on the first rotating shaft, the connecting plate being connected to the outer wall of the bag receiving hopper; the rotating mechanism includes a drive motor, the drive motor is mounted on the support, and the drive end of the drive motor is connected to one end of the first rotating shaft.

3. The automatic bag opening and closing device for bagged raw materials according to claim 1, characterized in that: The bag receiving hopper is provided with a first automatic telescopic component (207), the telescopic end of the first automatic telescopic component is connected to the separator; the first automatic telescopic component is a structure composed of a first cylinder (2071) and a first connecting rod (2072), the first cylinder is disposed on the bag receiving hopper, one end of the first connecting rod is connected to the piston end of the first cylinder, and the end of the first connecting rod away from the first cylinder is connected to the separator; or, the first automatic telescopic component is a structure composed of a first motor and a first screw, the first motor is disposed on the bag receiving hopper, the first screw is connected to the drive end of the first motor, and the first screw is threadedly connected to the separator.

4. The automatic bag opening and closing device for bagged raw materials according to claim 1, characterized in that: The insertion depth of the second connector is 100mm to 500mm; the second connector is an automatic connector; the second connector includes a second cylinder (2041), the second cylinder is disposed on the bag receiving hopper, the piston end of the second cylinder is provided with a second insert rod (2042), the insertion end of the second insert rod is a conical structure or a frustum-shaped structure; or, the second connector includes a second motor, the second motor is disposed on the bag receiving hopper, the drive end of the second motor is provided with a second drive screw, the second drive screw is threadedly connected with a second follower screw sleeve, the second follower screw sleeve is slidably disposed on the bag receiving hopper through a structure that cooperates with a guide slider through a guide groove, the insertion end of the second follower screw sleeve is a conical structure or a frustum-shaped structure.

5. The automatic bag opening and closing device for bagged raw materials according to claim 1, characterized in that: The third bag-pushing component is an automatic bag-pushing component; the third bag-pushing plate is a solid plate, a hollow plate, or a mesh plate structure; the third bag-pushing component includes a third cylinder (2051), the third cylinder is disposed on the bag-receiving hopper, the piston end of the third cylinder is provided with a third push rod (2052), and the end of the third push rod away from the third cylinder is connected to the third bag-pushing plate; or, the third bag-pushing component includes a third motor, the third motor is disposed on the bag-receiving hopper, the drive end of the third motor is provided with a third drive screw, the third drive screw is threadedly connected with a third follower screw sleeve, the third follower screw sleeve is slidably disposed on the bag-receiving hopper through a structure that cooperates with a guide slide block through a guide groove, and the end of the third follower screw sleeve away from the third motor is connected to the third bag-pushing plate.

6. The automatic bag opening and closing device for bagged raw materials according to claim 1, characterized in that: The bracket is provided with a first mounting plate (105), the insertion rod is set on the first mounting plate, and the air blowing pipe is set on the first mounting plate; the insertion rod inserts through the bagged raw material, and the air blowing end of the air blowing pipe is inserted into the bagged raw material; the insertion end of the insertion rod has a structure with a gradually increasing cross-sectional width; the air blowing end of the air blowing pipe has an inclined surface structure.

7. The automatic bag opening and closing device for bagged raw materials according to claim 1, characterized in that: The top plate is provided with several threading holes (110), through which the binding wire passes; the waste bag pushing structure is an automatic waste bag pushing structure; the waste bag pushing structure includes a fourth cylinder (902), which is mounted on a bracket, and the piston end of the fourth cylinder is provided with a fourth push block (903), which is connected to the waste bag pushing plate; or the waste bag pushing structure includes a fourth motor, which is mounted on a bracket, and the driving end of the fourth motor is provided with a fourth driving screw, and the fourth driving screw is threadedly connected with a fourth follower screw sleeve, which is connected to the waste bag pushing plate through a structure that cooperates with a guide slide and a guide slider.

8. The automatic bag opening and closing device for bagged raw materials according to claim 1, characterized in that: The cutting structure includes a blade holder (801), which is movably arranged relative to the support, and a cutting blade (802) is provided on the blade holder; the cutting structure is an automatic cutting structure; the cutting structure includes a fifth rodless cylinder (803), which is arranged on the support, and a fifth driving block (804) is connected to the driving end of the fifth rodless cylinder. The fifth driving block is connected to the blade holder, and a guide plate (805) is provided on the top of the fifth rodless cylinder; or, the cutting structure includes a fifth motor, which is arranged on the support, and a fifth driving screw is provided on the driving end of the fifth motor. A fifth follower screw sleeve is threadedly connected to the fifth driving screw, and the fifth follower screw sleeve is connected to the blade holder. The blade holder is slidably arranged on the support through a structure in which a guide groove cooperates with a guide slider. A guide plate is provided on the housing of the fifth motor, and the guide plate covers the fifth driving screw.

9. The automatic bag opening and closing device for bagged raw materials according to claim 1, characterized in that: The cutter includes a cutter body (8021), which is mounted on a cutter holder. Both sides of the cutter body are sickle-shaped, curving towards the centerline of the cutter body. The sickle shape is formed by connecting a first blade segment (8022) and a second blade segment (8023). The connection between the first blade segment and the second blade segment is a rounded transition. Both the first blade segment and the second blade segment are inclined relative to the horizontal direction, with the first blade segment located above the second blade segment.

10. An automatic bag opening and closing method for bagged raw materials, characterized by: Including the following step, (S01) Place the bagged raw materials horizontally onto the divider inside the bag receiving hopper; (S02) The insertion end of the second connector is inserted into the position of the bagged raw material near the edge in step (S01); (S03) The separator in step (S01) is removed. The bagged raw material on the separator rotates from a horizontal state to a vertical state under its own gravity. (S04) Step (S02) The insertion end of the second connector is released from the insertion of the bagged material, and the bagged material falls on the first hollow support part; (S05) The third pusher pushes the bagged material in step (S04) on the first hollow support part through the third pusher plate until the bagged material is inserted into the insertion rod and the air blowing tube; (S06) In step (S05), the third pusher plate returns to the starting position, the cutter structure starts to move, and moves back and forth to cut the bottom of the raw material bag. At the same time, the air blowing pipe blows air into the raw material bag. (S07) After the raw materials in the bagged raw materials in step (S06) have been completely poured out, the third pusher plate in step (S05) pushes the new bagged raw materials into the insertion rod and the air blowing pipe. This process is repeated until there are enough raw material waste bags inserted into the insertion rod and the air blowing pipe. (S08) Stop the feeding action of bagged raw materials in the device, rotate the bag receiving hopper in step (S01) to let out the raw material waste bag, and pull the binding line at the thread hole to bind the raw material waste bag. (S09) The waste bag push plate starts to move, pushing the raw material waste bag that was tied in step (S08) out of the insertion rod.

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