Lightweight material conveying method, filling precision feeding method and blanking filling device

Abstract

The invention discloses a light material conveying method, a filling precision feeding method and a discharging and filling device, and relates to the technical field of packaging. The method comprises the steps that materials are loaded into the first-stage material storage unit; screening the materials meeting the requirements; the discharging speed is adjusted, and the materials are collected to a first-stage temporary storage unit; the second-stage temporary storage unit receives the materials and weighs the materials in real time, so that the first-stage temporary storage unit is controlled to be switched on and off; the weighed materials are conveyed to the second-stage storage unit, and meanwhile the paper tube is conveyed to the position below the second-stage storage unit; putting materials into the paper tube; and the filling piece is filled in the paper tube in a vertical composite motion manner. The device is correspondingly provided with a multi-stage material storage unit, a temporary storage unit, a weighing mechanism and a conveying mechanism. The method has the beneficial effects that a precise foundation is laid for screening, quantitative precision is guaranteed through multi-stage temporary storage and weighing control, and inaccurate quantification caused by accumulation is solved; the material compactness is improved through composite motion, and bending is reduced; mechanical operation replaces extensive operation, efficiency is improved, large-scale production is adapted, the quality problem caused by abnormal weight is avoided, and the material utilization rate is improved.

Description

Technical Field

[0001] This invention relates to the field of packaging technology, specifically to a method for conveying lightweight materials, a method for precisely feeding fillers, and a filler feeding device. Background Technology

[0002] In the production and packaging of elongated conical paper tubes, there exists a special type of paper tube with a clearly defined structure. It is a standard elongated cone shape, with a closed structure at the smaller end (approximately 0.5 cm in outer diameter), serving as the final usable end of the product; and an open structure at the larger end (approximately 1.5 cm in outer diameter), serving as the material filling end. Its length is approximately 10-12 cm. It is the core packaging carrier for specific small-volume, irregularly shaped materials, with each tube containing 0.3 grams of material. These small-volume, irregularly shaped materials can be granular, powdery, or fragmented; for simplicity, granular material will be used as an example below. The complete packaging process for this type of product involves several key steps, one of the core processes being the precise filling of the pre-set weight of granular material into the open end of the paper tube. After filling, the open end must be screwed shut to ensure the structural integrity and performance of the product.

[0003] Currently, the mainstream methods for filling granular materials into the aforementioned conical paper tube workpieces in the industry are manual feeding or simple mechanical feeding. Manual feeding relies entirely on the operator's experience and judgment to control the filling amount. It typically involves manually scooping material and pouring it into the paper tube. While simple weighing tools are sometimes used for post-processing verification, the inherent inconsistency of manual operation results in extremely low efficiency, making it difficult to adapt to large-scale, continuous production. More importantly, the feeding accuracy cannot be guaranteed. It should be noted that the granular material to be filled is prone to accumulation due to the adhesion between particles. During manual filling, it is difficult to achieve uniform material drop and quantitative filling, leading to a significant deviation between the actual filling weight of a single paper tube workpiece and the preset value, failing to meet high-precision production requirements. Furthermore, the filling material within the conical packaging carrier must have appropriate compaction; otherwise, the packaged product is prone to bending, resulting in product defects.

[0004] Although existing simple mechanical feeding devices have replaced some manual operations through mechanized operation and have improved production efficiency to a certain extent compared with manual feeding, they are still limited by the limitations of structural design and have not solved the core pain point of high-precision quantitative feeding. It is difficult to stably control the filler weight of a single paper tube workpiece at the preset target value of about 0.3 grams.

[0005] The stability of filler weight directly determines the quality of subsequent processes and the final product qualification rate. If the filler weight exceeds the preset value, the paper tube will be overfilled, leading to paper tube breakage or seal failure during screwing and sealing. Furthermore, the high internal pressure during subsequent pressing and forming will cause irregular pitting. If the filler weight is below the preset value, the core performance of the product will be substandard, resulting in low material utilization efficiency. Therefore, considering the structural characteristics of long, tapered paper tubes and the tendency of granular materials to accumulate, a specialized device capable of high-precision quantitative feeding is needed. This addresses the industry pain points of low feeding accuracy and poor stability in existing technologies, and is of great significance for improving product quality consistency and increasing production efficiency. Summary of the Invention

[0006] To address one of the shortcomings of existing technologies, this invention provides a method for conveying lightweight materials, a method for precisely feeding fillers, and a filling device, thereby solving the problem of precise filling of lightweight materials in conical long paper tubes.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a method for conveying lightweight materials, comprising the following steps: A1. Configure a primary temporary storage unit that can be used to receive materials to be conveyed. The primary temporary storage bin of the primary temporary storage unit serves as the material receiving structure. The top of the primary temporary storage bin is the inlet, and the bottom horizontal side is the outlet. A2. A temporary storage discharge pipe is configured as a discharge pipeline on one side of the discharge port of the primary storage silo. The temporary storage discharge pipe is a horizontal pipe. A3. Cut an opening in the upper part of the temporary discharge pipe near the discharge end; A4. Install a vibration module on the side of the primary storage bin, and install a solenoid valve at the connection between the discharge port and the discharge pipe of the primary storage bin. A5. Vertically deposit the materials into the primary temporary storage bin; A6. A secondary temporary storage chamber is set at the end of the temporary discharge pipe as a subsequent conveying container; A7. Control the solenoid valve to connect the discharge pipe and the inside of the container, and turn on the vibration module; A8. When the secondary temporary storage bin receives a set amount of material, the solenoid valve controls the discharge pipe to shut off. A9. Utilize the transfer mechanism to move the secondary temporary storage warehouse toward the direction of subsequent demand.

[0008] The precision feeding method for fillers, using the aforementioned lightweight material conveying method, includes the following steps: S1. The material to be packaged is filled once and placed into the primary storage unit; S2. Screen the materials in the primary storage unit to separate out materials that meet packaging requirements; S3. Adjust the discharge speed of the primary storage unit to collect the material in the primary storage unit into the primary temporary storage unit; S4. Control the material output of the primary temporary storage unit, use the secondary temporary storage unit to receive the material discharged from the primary temporary storage unit, weigh the material received by the secondary temporary storage unit in real time, and control the opening or closing of the material output path of the primary temporary storage unit according to the weight of the material in the secondary temporary storage unit. S5, the secondary temporary storage unit transports the weighed material from S4 to the secondary storage unit; the conveying mechanism transports the paper tube with its opening vertically upward to the bottom of the secondary temporary storage unit; S6, the secondary storage unit feeds materials into the paper tube from top to bottom; S7. Set up a filling component corresponding to the paper tube, and make the filling component fill the paper tube with a vertical compound motion inside the paper tube. The compound motion is a superimposed vertical reciprocating motion during the overall upward lifting process.

[0009] Preferably, the screening method for materials in the primary storage unit in step S2 includes: S201. The material is fed into a screen cylinder with mesh holes on the perimeter wall; S202. The material is stirred inside the screen cylinder, and the rotation reference axis during stirring is the central axis of the screen cylinder.

[0010] Preferably, in step S4, the material entering the primary temporary storage unit is in a vertical direction, the material moves in the primary temporary storage unit in a tortuous path, and the material in the primary temporary storage unit is discharged in a horizontal direction. The secondary temporary storage unit receives materials below the material discharge port of the primary temporary storage unit.

[0011] Preferably, when weighing the secondary temporary storage unit in step S4, the weighing sensor is supported on the ground by an independent structure.

[0012] A packing feeding device, applied to the aforementioned precision packing feeding method, includes: The primary storage unit is equipped with a primary storage cylinder that can be detachably connected to the external support structure. The upper end of the primary storage cylinder is the material inlet, and the lower end is the material outlet. A screen cylinder is installed inside the primary storage cylinder. A primary temporary storage unit is located below the primary storage unit. The primary temporary storage unit includes a primary temporary storage bin. The top of the primary temporary storage bin has a material inlet. The primary temporary storage bin is located directly below the material outlet of the primary storage bin. The secondary storage unit is located on the horizontal side of the primary temporary storage unit. The secondary storage unit includes a secondary storage cylinder, the lower end of which is a material discharge port. The secondary storage cylinder is located above the paper tube conveying path. The secondary storage unit is equipped with a packing component that can move vertically. The packing component has a rod-shaped structure. A secondary temporary storage unit is disposed between the primary temporary storage unit and the secondary storage unit. The secondary temporary storage unit includes a secondary temporary storage bin, which can reciprocate between the primary temporary storage unit and the secondary storage unit. The weighing unit is located below the movement path of the secondary temporary storage bin and can weigh the secondary temporary storage bin; the weighing unit is equipped with an independent support structure.

[0013] Preferably, the sieve cylinder is a cylindrical body with an open top and mesh openings on the bottom and peripheral walls. The primary storage unit also includes: A stirring element is disposed inside the sieve cylinder and is driven to rotate by a stirring drive assembly.

[0014] Preferably, the stirring component comprises: The drive rod is coaxially arranged with the screen cylinder; The first stirring rod assembly includes two opposing first stirring rods, each of which is an arc-shaped rod symmetrically arranged on both sides of the active rod. One end of each first stirring rod is fixedly connected to the outside of the active rod, and the other end extends downward. The two stirring rods of the first stirring rod assembly form a downward-opening "C"-shaped rod assembly. Several sets of the first stirring rod assembly are arranged on the active rod. The second stirring rod is located at the bottom end of the main rod. The second stirring rod is an annular rod. The top of the second stirring rod has an opening that connects to the main rod. The two sides of the second stirring rod are inclined rods, and the bottom is tapered into an arc structure.

[0015] Preferably, the bottom end of the material discharge port of the primary storage cylinder is an inclined open opening; the primary storage unit further includes: The discharge adjustment assembly is located below the discharge end of the primary storage cylinder; the discharge adjustment assembly includes: The adjustment frame is fixedly installed below the cylinder body of the primary storage cylinder; The adjusting plate is an inclined plate body, and the adjusting plate and the adjusting frame are slidably connected. A locking structure is provided at the connection between the adjusting plate and the adjusting frame. One end of the adjusting plate extends toward the material discharge port of the primary storage cylinder and is in contact with the material discharge port. The end of the adjusting plate toward the material discharge port of the primary storage cylinder is the low horizontal end.

[0016] Preferably, the primary storage chamber of the primary storage unit is a cylindrical chamber, and a discharge port is provided on the horizontal side of the bottom of the primary storage chamber; the primary storage unit further includes: The temporary storage discharge pipe is a horizontally arranged pipe. One end of the temporary storage discharge pipe is connected to the discharge port of the primary temporary storage bin, and the other end extends towards the secondary temporary storage unit.

[0017] Preferably, the portion of the temporary discharge pipe near the primary temporary storage chamber is a cylindrical tube; the portion of the temporary discharge pipe near the secondary temporary storage unit is a "U"-shaped tube, with its upper part and the end away from the primary temporary storage chamber being open openings.

[0018] Preferably, the secondary temporary storage unit further includes: A secondary temporary storage rack is used to place the secondary temporary storage compartment; The flip drive component, which is linked to the secondary temporary storage rack, can drive the secondary temporary storage rack to flip. The lateral movement drive component is linked with the secondary temporary storage rack and can drive the secondary temporary storage rack to move laterally.

[0019] Preferably, the secondary temporary storage bin includes: The receiving part has an open opening at the top and an internal cavity for receiving materials. The connecting part is located on the underside of the receiving part; A limiting part is provided at the end of the connecting part away from the receiving part; The secondary temporary storage rack is a ring-shaped body, and the secondary temporary storage rack is connected to the secondary temporary storage compartment through a connecting part.

[0020] Preferably, the receiving part of the secondary temporary storage compartment is a cylindrical structure; the connecting part is a frustum-shaped structure; and the limiting part is a plate. The connecting parts of the secondary temporary storage rack and the secondary temporary storage bin are sleeved and slidably connected. The weighing component of the weighing unit is on the moving path of the secondary temporary storage bin. When the secondary temporary storage bin is located above the weighing component, the weighing component can lift the secondary temporary storage bin.

[0021] Preferably, the secondary storage cylinder has a funnel-shaped structure, and the packing components include: The linkage component is linked with the power component and is driven by the power component to move in the vertical direction; the bottom end of the linkage component is provided with a positioning groove, which is a conical groove. The packing rod is a vertically arranged rod with an outer diameter smaller than the inner diameter of the material discharge outlet of the secondary storage cylinder; a conical positioning block is provided at the top of the packing rod, and the positioning block corresponds to the positioning groove. The fixing component is sleeved on the outside of the connection between the packing rod and the linkage component, and the fixing component and the linkage component are threaded together.

[0022] Compared with existing technologies, this method and device for precision feeding of fillers can significantly improve the material filling accuracy and stability of long, conical paper tubes, ensuring consistent product quality.

[0023] The screening action of the screen cylinder in the primary storage unit can pre-screen materials that meet packaging requirements, laying the foundation for accurate filling in the future.

[0024] Adjusting the discharge speed of the primary storage unit and transitioning to the primary temporary storage unit enables stable material transport and avoids affecting quantitative accuracy due to fluctuations in material transport.

[0025] The real-time weighing design of the secondary storage unit, in conjunction with the weighing unit, enables precise control of material weight. By controlling the on / off state of the output path of the primary storage unit through weight feedback, it ensures that the weight of the material delivered to the secondary storage unit each time stably matches the preset target value in grams, effectively solving the problem of inaccurate quantification caused by the easy accumulation of granular materials.

[0026] During the material feeding process, the rod-shaped filler moves vertically and compoundly inside the paper tube to fill the material, which can make the material form an appropriate compactness inside the paper tube, reduce the risk of bending of the product later, and further improve the product qualification rate.

[0027] Meanwhile, the entire process, through the mechanized combination of multi-level material storage, temporary storage and precise control, replaces the extensive operation of traditional manual or simple machinery, greatly improving production efficiency, adapting to the rhythm of large-scale and continuous production, and avoiding problems such as paper tube breakage, sealing failure and irregular pit formation caused by excessive filler weight. It can also prevent substandard product core performance and material waste caused by insufficient filler weight, improve material utilization efficiency and provide reliable guarantee for the quality of subsequent processing steps. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 2 ; Figure 3 This is a front view of the overall structure of an embodiment of this application; Figure 4 for Figure 1 A magnified view of part A; Figure 5 This is a schematic diagram of the primary storage unit structure according to an embodiment of this application; Figure 6 This is a cross-sectional view of the primary storage unit in an embodiment of this application; Figure 7This is a schematic diagram of the secondary temporary storage unit structure according to an embodiment of this application; Figure 8 This is a schematic diagram of the secondary storage unit structure according to an embodiment of this application; Figure 9 This is a cross-sectional view of the secondary storage unit according to an embodiment of this application; Figure 10 for Figure 9 A magnified view of part A.

[0029] In the picture: 1. Primary storage unit; 11. Primary storage cylinder; 12. Screen cylinder; 13. Agitator; 131. Drive rod; 132. First agitator rod assembly; 133. Second agitator rod; 14. Discharge adjustment assembly; 2. Primary temporary storage unit; 21. Primary temporary storage bin; 22. Temporary storage discharge pipe; 3. Secondary temporary storage unit; 31. Secondary temporary storage bin; 32. Secondary temporary storage rack; 33. Tilting drive assembly; 34. Lateral movement drive assembly; 35. Weighing and lifting assembly; 4. Secondary storage unit; 41. Secondary storage cylinder; 42. Packing components; 421. Linkage components; 422. Packing rod; 423. Fixing components. Detailed Implementation

[0030] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] This application provides the following technical solution: A method for conveying lightweight materials, including the following steps: A1. Configure a primary temporary storage unit that can be used to receive materials to be conveyed. The primary temporary storage bin of the primary temporary storage unit serves as the material receiving structure. The top of the primary temporary storage bin is the inlet, and the bottom horizontal side is the outlet. A2. A temporary storage discharge pipe is configured as a discharge pipeline on one side of the discharge port of the primary storage silo. The temporary storage discharge pipe is a horizontal pipe. A3. Cut an opening in the upper part of the temporary discharge pipe near the discharge end; A4. Install a vibration module on the side of the primary storage bin, and install a solenoid valve at the connection between the discharge port and the discharge pipe of the primary storage bin. A5. Vertically deposit the materials into the primary temporary storage bin; A6. A secondary temporary storage chamber is set at the end of the temporary discharge pipe as a subsequent conveying container; A7. Control the solenoid valve to connect the discharge pipe and the inside of the container, and turn on the vibration module; A8. When the secondary temporary storage bin receives a set amount of material, the solenoid valve controls the discharge pipe to shut off. A9. Utilize the transfer mechanism to move the secondary temporary storage warehouse toward the direction of subsequent demand.

[0032] This lightweight material conveying method is applicable to conveying lightweight granular, powdery, or fragmented materials, especially for slow, quantitative feeding, with precise metering as a priority. This method utilizes a special conveying mechanism that allows material output to stop immediately after the required metered quantity has been conveyed, thus achieving accurate material delivery.

[0033] The method for precise feeding of packing includes the following steps: S1. The material to be packaged is filled once and placed into the primary storage unit.

[0034] S2. Screen the materials in the primary storage unit to separate those that meet packaging requirements; the screening method for the materials in the primary storage unit is as follows: S201. The material is fed into a screen cylinder with mesh holes on the perimeter wall; S202. The material is stirred inside the screen cylinder, and the rotation reference axis during stirring is the central axis of the screen cylinder.

[0035] S3. Adjust the discharge speed of the primary storage unit to collect the material in the primary storage unit into the primary temporary storage unit.

[0036] S4. The material entering the primary temporary storage unit is vertical, and the material moves in a curved path within the primary temporary storage unit. The material in the primary temporary storage unit is discharged in a horizontal direction. The secondary temporary storage unit receives the material below the material discharge outlet of the primary temporary storage unit. Control the material output of the primary temporary storage unit and use the secondary temporary storage unit to receive the material discharged from the primary temporary storage unit; weigh the material received by the secondary temporary storage unit in real time, and control the opening or closing of the material output path of the primary temporary storage unit based on the weight of the material in the secondary temporary storage unit. When weighing the secondary temporary storage unit, the weighing sensor is supported on the ground by an independent structure.

[0037] S5, the secondary temporary storage unit transports the weighed material from S4 to the secondary storage unit; the conveying mechanism transports the paper tube with its opening vertically upward to the bottom of the secondary temporary storage unit.

[0038] S6, the secondary storage unit feeds materials into the paper tube from top to bottom.

[0039] S7. Set the corresponding filling component for the paper tube, and make the filling component fill the paper tube with a vertical compound motion inside the paper tube. The compound motion is the superposition of vertical reciprocating motion during the overall upward lifting process.

[0040] This method first places the material to be filled into the paper tube into the primary storage unit 1, where the material is first screened. Material with excessively large particles is retained, while material with the required particle size can be discharged and enter the primary temporary storage unit 2.

[0041] The material enters the primary temporary storage unit 2. Because the material in this solution is granular and the weight requirement for each package is extremely low, a material conveying method with active power is not suitable. This solution uses a curved path as the discharge path for the primary temporary storage unit 2. The primary discharge unit 1 discharges material vertically downwards, and the subsequently falling material pushes the material at the bottom towards the discharge port of the primary temporary storage unit 2. Adjusting the discharge speed of the primary storage unit affects the discharge speed of the primary temporary storage unit 2. This ensures that the weight of the material not yet discharged from the primary temporary storage unit 2 can effectively push the material inside, while also preventing material overflow.

[0042] After entering the secondary temporary storage unit 3, the material is weighed to obtain an accurate weight, which is the 0.3 grams required in this solution. Because of the consideration for automated operation, a sensor is used as the weight feedback component for weighing, combined with the solenoid valve of the discharge path of the primary temporary storage unit 2 for control. As mentioned earlier, because the end of the discharge path of the primary temporary storage unit 2, i.e., the discharge end, is horizontally oriented and does not have a pusher component inside, when the solenoid valve closes the discharge path of the primary temporary storage unit 2, the material in its discharge path naturally stops falling. To ensure accurate weighing of the material in the secondary temporary storage unit 3, the corresponding sensor is mounted on an independent support structure, such as a support frame. The bottom of the support frame is fitted with elastic pads and placed separately on the ground, not sharing a frame with other units. This minimizes the risk of sensor errors due to equipment vibration.

[0043] After obtaining the accurate weight of the material, the secondary temporary storage unit 3 conveys the material to the secondary storage unit 4, which then fills the material. Because the material to be filled in this solution is a lightweight granular material, relying solely on the material itself is insufficient to fully fill the paper tube, resulting in significant space between materials and causing the paper tube to easily bend and deform after packaging. This method considers setting up a filling element as a dedicated structural component for the filling. The filling element is rod-shaped and uses a compound motion to compact the material. The filling element needs to be able to be inserted into the paper tube; its vertical reciprocating motion in the compound motion is achieved by using the filling element to perform a vertical "poking" action. The overall lifting process allows the filling element to gradually withdraw from the paper tube. During this withdrawal process, on the one hand, the material around it moves naturally downwards, and on the other hand, it repeatedly "poks" and compacts, ultimately fulfilling the material filling requirement within the paper tube.

[0044] Based on the above implementation plan, see Figures 1-10 This solution also provides a feeding and filling device, which is applied to the aforementioned precision feeding method for filling, including a primary storage unit 1, a primary temporary storage unit 2, a secondary temporary storage unit 3, and a secondary storage unit 4. The primary storage unit 1 is equipped with a primary storage cylinder 11 that is detachably connected to an external support structure. The upper end of the primary storage cylinder 11 is a material inlet, and the lower end is a material outlet. A screen cylinder 12 is installed inside the primary storage cylinder 11. The primary temporary storage unit 2 is located below the primary storage unit 1. The primary temporary storage unit 2 includes a primary temporary storage bin 21, the top of which has a material inlet, and the primary temporary storage bin 21 is located directly below the material outlet of the primary storage cylinder 11. The secondary storage unit 4 is located on the horizontal side of the primary temporary storage unit 2. The secondary storage unit 4 includes a secondary storage cylinder 41, the lower end of which is the material discharge outlet. The secondary storage cylinder 41 is positioned above the paper tube conveying path. Inside the secondary storage unit 4 is a vertically movable packing element 42. The packing element 42 has a rod-shaped structure. It is important to note that because the paper tube packaging carrier in this solution is thin and flexible, the packing element 42 needs to be precisely positioned. If it is misaligned, it will directly damage the paper tube. The precise positioning solution for the packing element 42 will be further explained later. The secondary temporary storage unit 3 is located between the primary temporary storage unit 2 and the secondary storage unit 4. The secondary temporary storage unit 3 includes a secondary temporary storage bin 31, which can reciprocate between the primary temporary storage unit 2 and the secondary storage unit 4. A weighing unit is also located below the movement path of the secondary temporary storage bin 31. The weighing unit can weigh the secondary temporary storage bin 31; the weighing unit is equipped with an independent support structure.

[0045] The aforementioned structure of this solution enables the precise feeding method for fillers described above. This device can be used independently or as a dedicated unit in a packaging production line for weighing and filling materials.

[0046] Based on the above implementation scheme, and considering the efficiency of material handling, multiple primary storage cylinders 11 are provided. The top of each cylinder has a flared opening as a material inlet; the middle section is a cylindrical body, with the screen cylinder 12 detachably connected inside; the lower section has a funnel-like converging structure for material discharge; and the bottom end has a short cylindrical tube as the outlet, with its bottom surface sloped. The short cylindrical tube is eccentrically positioned, and the lower funnel-shaped structure corresponds to the eccentric funnel structure. This structure, compared to a concentric discharge structure, better avoids material accumulation and jamming.

[0047] To make more efficient use of the space, the primary storage cylinder 11 in this design adopts a staggered arrangement of its discharge outlets, meaning that the discharge outlets of two adjacent primary storage cylinders 11 are not on the same straight line. Figure 6 Taking the direction shown as an example, the discharge port of the primary storage cylinder 11 presents a "left, right, left, right..." distribution. This also provides more installation and operation space for the discharge adjustment component 14.

[0048] The sieve cylinder 12 is a cylindrical body with an open top and mesh openings on its bottom and peripheral walls. An agitator 13 is installed inside the sieve cylinder 12, and the agitator 13 is driven to rotate by an agitator drive assembly. The agitator drive assembly uses a motor combined with a gear set for linkage, with each gear having a linkage component corresponding to one agitator 13 inside the sieve cylinder. Because the agitator 13 in this design uses a rotating agitation method, but there are no specific requirements for the direction of rotation, direct gear meshing is sufficient for transmission.

[0049] Based on the above implementation plan, see Figure 4 The stirring component 13 includes a drive rod 131, a first stirring rod assembly 132, and a second stirring rod 133. The drive rod 131 and the sieve cylinder 12 are coaxially arranged, and the upper end of the drive rod 131 can be linked with the stirring drive assembly.

[0050] The first stirring rod assembly 132 includes two opposing first stirring rods, each an arc-shaped rod symmetrically positioned on either side of the main rod. One end of each first stirring rod is fixedly connected to the outer side of the main rod, while the other end extends downwards. The two stirring rods form a downward-opening "C"-shaped rod combination. Two sets of the first stirring rod assembly 132 are mounted on the main rod. The two sets of first stirring rods are staggered, and their projections on the horizontal plane form a cross shape.

[0051] The second stirring rod 133 is located at the bottom end of the main rod 131. The second stirring rod 133 is an annular rod. An opening is provided at the top of the second stirring rod 133, connecting it to the main rod 131. The two sides of the second stirring rod 133 are inclined rods, and the bottom tapers into an arc structure. The overall shape of the second stirring rod 133 is approximately heart-shaped. Both the rods in the first stirring rod assembly 132 and the second stirring rod 133 are round rods.

[0052] The mixing element 13 in this design serves two purposes: firstly, to prevent material from piling up and getting stuck; and secondly, to facilitate more efficient material screening through agitation. Therefore, this design employs a specially structured first mixing rod assembly 132 and second mixing rod 133. Compared to conventional blade-type mixing, this structure is more conducive to material agitation without excessively damaging the material.

[0053] Based on the above implementation scheme, as mentioned earlier, the bottom end of the material discharge port of the primary storage cylinder 11 is an inclined open opening. A discharge adjustment assembly 14 is provided below the discharge end of the primary storage cylinder 11 to adjust the material discharge speed of the primary storage cylinder 11. The discharge adjustment assembly 14 includes an adjustment frame 141 and an adjustment plate 142. The adjustment frame 141 is fixedly installed below the cylinder body of the primary storage cylinder 11, or it can be fixed in other positions. The structure of the adjustment frame 141 is not limited, as long as it can slide and connect with the adjustment plate 142. The adjustment plate 142 is an inclined plate, with one end extending towards and abutting the material discharge port of the primary storage cylinder 11. Simultaneously, the end of the adjustment plate 142 facing the material discharge port of the primary storage cylinder 11 is a low-level end. A locking structure is provided at the connection between the adjustment plate 142 and the adjustment frame 141.

[0054] In other words, this solution uses the adjustment plate 142 to block the material outlet of the primary storage cylinder 11, and controls the degree of opening of the material outlet of the primary storage cylinder 11 by changing the position of the adjustment plate 142, thereby changing the feeding speed.

[0055] Based on the above implementation plan, see Figure 4 The primary storage chamber 21 of the primary storage unit 2 is a cylindrical chamber, and a discharge port is opened on the horizontal side of the bottom of the primary storage chamber 21. A temporary discharge pipe 22 is provided on the discharge port side of the storage chamber 21. The temporary discharge pipe 22 is a horizontally arranged pipe. One end of the temporary discharge pipe 22 is connected to the discharge port of the primary storage chamber 21, and the other end extends towards the secondary storage unit 3.

[0056] Considering the special nature of the materials in this solution, the part of the temporary discharge pipe 22 near the primary temporary storage bin 21 is a complete cylindrical tube; the part of the temporary discharge pipe 22 near the secondary temporary storage unit 3 is a "U" shaped tube, with its upper part and the end away from the primary temporary storage bin 21 being open openings.

[0057] The advantage of this structure is that, as the material passes through the complete circular section of the temporary discharge pipe 22, the weight of the material pile in the primary temporary storage bin 21 ensures a good pushing force on the material inside the temporary discharge pipe 22. The "U"-shaped section allows the material to naturally disperse. This ensures that the material remains in a "fragmented" state during discharge, avoiding weighing errors caused by the adhesion between material particles. It also facilitates subsequent filling operations.

[0058] Based on the above implementation scheme, the primary temporary storage unit 2 can be equipped with a vibrator at the bottom of the primary temporary storage bin 21. The vibrator adds a certain vibration force to the primary temporary storage bin 21, thereby allowing the material inside to move and be discharged better.

[0059] Based on the above implementation plan, see Figure 7 The secondary temporary storage bin 31 includes a receiving part, a connecting part, and a limiting part. The receiving part is cylindrical, with an internal cavity for receiving materials and an open top for material input. The connecting part is located below the receiving part and is a frustoconical structure, with its larger outer diameter end fixedly connected to the lower surface of the connecting part. The limiting part is a circular plate located at the end of the connecting part away from the receiving part, i.e., the limiting part is fixedly connected to the smaller outer diameter end of the connecting part.

[0060] The secondary storage unit 3 includes a secondary storage rack 32 for placing the secondary storage compartment 31. The position of the secondary storage compartment 31 is transferred by moving the secondary storage rack 32. The secondary storage rack 32 is an annular body and is connected to the secondary storage compartment 31 via a connecting part. The inner diameter of the secondary storage rack 32 is smaller than the outer diameter of the receiving part of the secondary storage compartment 31, but larger than the outer diameter of the connecting part. The outer diameter of the limiting part is larger than the inner diameter of the secondary storage rack 32. The connecting part between the secondary storage rack 32 and the secondary storage compartment 31 is a sleeved and sliding connection.

[0061] With this structure, when the secondary storage chamber 31 is placed on the weighing component of the weighing unit, the secondary storage chamber 31 is lifted up and is not disturbed by the secondary storage rack 32, thus enabling accurate weighing.

[0062] Based on the above implementation scheme, this scheme uses the flip drive assembly 33, the lateral drive assembly 34, and the weighing lifting assembly 35 to achieve the various movement requirements of the secondary temporary storage rack 32.

[0063] The tilting drive assembly 33 is linked with the secondary temporary storage rack 32 to tilt the secondary temporary storage rack 32. The tilting drive assembly 33 can be of various forms, such as a motor or a tilting cylinder, as long as it can tilt the secondary temporary storage rack 32. The tilting drive assembly 33 is used to pour the material in the secondary temporary storage bin 31 into the secondary storage cylinder 41 of the secondary storage unit 4. The lateral movement drive assembly 34 is linked with the secondary temporary storage rack 32 to move the secondary temporary storage rack 32 laterally. The lateral movement drive assembly 34 can also be of various forms, as long as it can perform linear motion. This solution uses a belt with a connecting frame. The weighing lifting assembly 35 is used to drive the secondary temporary storage rack 32 to move vertically so that the secondary temporary storage bin 31 can be placed on the weighing assembly. This solution uses a cylinder as the driving structure for vertical movement.

[0064] The tilting drive assembly 33, the lateral drive assembly 34, and the weighing lifting assembly 35 are configured such that the cylinder body of the weighing lifting assembly 35 is fixedly connected to the connecting bracket on the belt of the tilting drive assembly 33. The tilting drive assembly 33 is located on the movable end of the weighing lifting assembly 35. The secondary temporary storage rack 32 is fixedly connected to the rotating shaft of the tilting drive assembly 33.

[0065] The weighing component of the weighing unit uses existing high-precision sensors along the moving path of the secondary storage bin 31. The lateral drive component 34 moves the secondary storage bin 31 above the weighing unit, and then the weighing lifting component 35 drives the secondary storage rack 32 to descend, placing the secondary storage bin 31 at the weighing position of the weighing unit. This causes the secondary storage bin 31 to move upward relative to the secondary storage rack 32, disengaging its conical surface from the annular surface inside the secondary storage rack 32, thus enabling more accurate material weighing.

[0066] Based on the above implementation plan, see Figures 8 to 10 The secondary storage cylinder 41 has a funnel-shaped structure, similar in shape to the primary storage cylinder 11, but its upper inlet and lower outlet are concentrically arranged. Its upper part also has a flared opening, the middle section is a cylindrical section, and the lower end tapers to form the outlet. Multiple secondary storage cylinders 41 are provided, corresponding in number to the primary storage cylinders 11. Each secondary storage cylinder 41 is matched with one packing element 42.

[0067] See Figure 10The packing component 42 includes a linkage 421, a packing rod 422, and a fixing component 423. A power assembly is also provided for the packing component 42 to drive its movement. The linkage 421 is located at the top of the entire packing component 42, and its upper end is linked to the power assembly, which drives it to move vertically. A positioning groove is provided at the bottom of the linkage 421; the positioning groove is a conical groove with the apex facing upwards. The outer wall of the linkage 421 has a threaded structure. The packing rod 422 is a vertically arranged rod, and its outer diameter is smaller than the inner diameter of the material discharge outlet of the secondary storage cylinder 41. A conical positioning block is provided at the top of the packing rod 422, corresponding to the positioning groove. The fixing component 423 is a cylindrical body that is sleeved on the outside of the connection between the packing rod 422 and the linkage 421. The bottom of the fixing member 423 has a through hole through which the packing rod 422 can pass. The bottom of the fixing member 423 can support the positioning block at the top of the packing rod 422 from below. The upper part of the fixing member 423 is threadedly connected to the linkage member 421.

[0068] This structure, with the help of a specially designed linkage 421 and packing rod 422, ensures that the direction of the packing rod 422 will not be skewed.

[0069] Based on the above implementation scheme, the driving method for the packing element 42, i.e., the aforementioned power component, also has multiple implementation methods. This scheme provides one example. This scheme adopts a composite structure. The main lifting component and the auxiliary lifting component are combined. The main lifting component drives the main lifting frame to perform lifting and lowering movements. The main lifting component can be a cylinder, belt, or lead screw, etc. An auxiliary lifting frame is set below the main lifting frame, and the linkage 421 of the packing element 42 is connected to the auxiliary lifting frame. The auxiliary lifting component can be a cylinder, with its cylinder body fixed on the main lifting frame and its moving end linked with the auxiliary lifting frame. The auxiliary lifting component drives the packing element 42 to reciprocate. This achieves the composite movement of the packing element in step S7 of the aforementioned method.

[0070] Based on the above implementation scheme, the secondary storage cylinder 41 is mounted on the storage cylinder support, and the drive assembly also includes a cylinder that can drive the storage cylinder support to rise and fall. In the initial stage of filling the paper tube, the storage cylinder support is located at a low position, which makes it easier for the material to enter the paper tube. As the material is filled, the storage cylinder support gradually drives the secondary storage cylinder 41 to rise.

[0071] Based on the above implementation scheme, a vibrator is provided for the corresponding linkage 421. The vibrator drives the filling rod 422 to vibrate, so as to better complete the filling and improve the compactness of the filling in the paper tube.

[0072] Based on the above implementation scheme, as a further optimization, a shield and anti-static components can be installed on the outside of the weighing unit to further reduce the impact of the external environment on the weighing process.

[0073] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0074] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0075] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0076] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0077] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0078] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method of conveying light material, characterized in that The method comprises the steps of: A1, configuring a first temporary storage unit which can be used to receive the material to be conveyed, a first temporary storage bin of the first temporary storage unit serving as a receiving structure for the material, a feeding port being arranged at the top of the first temporary storage bin, and a discharging port being arranged at the bottom and one side of the first temporary storage bin; A2, arranging a temporary discharging pipe serving as a discharging pipe at the side of the discharging port of the first temporary storage bin, the temporary discharging pipe being a horizontal pipe body; A3, cutting an opening at the upper part of the pipe body of the temporary discharging pipe close to the discharging end; A4, arranging a vibration module at the side of the first temporary storage bin and arranging an electromagnetic valve at the connection between the discharging port of the first temporary storage bin and the discharging pipe; A5, vertically feeding the material into the first temporary storage bin; A6, arranging a second temporary storage bin serving as a subsequent conveying container at the end of the temporary discharging pipe; A7, controlling the electromagnetic valve to make the discharging pipe and the inside of the container communicate, and turning on the vibration module; A8, when the second temporary storage bin internally receives the material to a set amount, the electromagnetic valve controls the discharging pipe to be closed; A9, using a transfer mechanism to drive the second temporary storage bin to displace to a subsequent demand direction.

2. A method for precise dosing of fillers, characterized in that The method for conveying light material according to claim 1 comprises the steps of: S1, once filling the material to be packaged, the material is put into the first storage unit; S2, screening the material in the first storage unit, and screening the material meeting the packaging requirements; S3, adjusting the discharging speed of the first storage unit, and collecting the material in the first storage unit into the first temporary storage unit; S4, controlling the first temporary storage unit to discharge, and using the second temporary storage unit to receive the material discharged from the first temporary storage unit, and real-time weighing the material received by the second temporary storage unit, and controlling the closing or opening of the material output passage of the first temporary storage unit according to the weight of the material in the second temporary storage unit; S5, the second temporary storage unit conveys the weighed material in S4 to the second storage unit; the conveying mechanism vertically feeds the paper tube to the lower side of the second temporary storage unit in the posture of the opening of the paper tube vertically upward; S6, the second storage unit feeds the material into the paper tube from top to bottom; S7, a filling part corresponding to the paper tube is arranged, and the filling part fills the material in the paper tube in a vertical direction with a compound motion, and the compound motion is a vertical reciprocating motion superimposed on the overall upward lifting process.

3. The method of precise filler dosing according to claim 2, characterized in that, The screening method of the first storage unit in step S2 comprises: S201, the material is put into a screen cylinder with a mesh on the peripheral wall; S202, the material is stirred in the screen cylinder, and the rotation reference axis during stirring is the central axis of the screen cylinder.

4. The method of precise filler dosing according to claim 2, characterized in that, The material entering direction of the first temporary storage unit in step S4 is a vertical direction, the material moves in the first temporary storage unit in a bending path, and the material of the first temporary storage unit is discharged in a horizontal direction; The second temporary storage unit receives the material below the material discharging port of the first temporary storage unit.

5. The method of precise filler dosing according to claim 2, wherein When the second temporary storage unit is weighed in step S4, the weighing sensor is supported on the ground by an independent structure.

6. A blanking filler device characterized by, The method for precisely filling the material according to any one of claims 2-5 comprises: The first storage unit is provided with a first storage cylinder which is detachably connected with an external support structure, the upper end of the first storage cylinder is a material feeding port, and the lower end is a material discharging port; a screen cylinder is arranged in the first storage cylinder; The first temporary storage unit is arranged below the first storage unit, and comprises a first temporary storage bin, the top of the first temporary storage bin is provided with a material inlet, and the first temporary storage bin is arranged directly below the material discharge outlet of the first storage cylinder; The second storage unit is arranged on the horizontal side of the first temporary storage unit, and comprises a second storage cylinder, the lower end of the second storage cylinder is a material discharge outlet, and the second storage cylinder is arranged above the paper tube conveying path; a filling member capable of moving in the vertical direction is arranged in the second storage unit, and the filling member is in the form of a rod; The second temporary storage unit is arranged between the first temporary storage unit and the second storage unit, and comprises a second temporary storage bin, which can reciprocate between the first temporary storage unit and the second storage unit; The weighing unit is arranged below the moving path of the second temporary storage bin, and can weigh the second temporary storage bin; and the weighing unit is provided with a separate support structure.

7. The dunnage device of claim 6, wherein, The sieve cylinder is in the form of a cylindrical body, the upper end of the sieve cylinder is an open end, and the bottom and the peripheral wall of the sieve cylinder are provided with mesh holes; The first storage unit further comprises: The stirring member is arranged in the sieve cylinder and is driven to rotate by the stirring driving assembly.

8. The dunnage device of claim 7, wherein, The stirring member comprises: The driving rod is coaxially arranged with the sieve cylinder; The first stirring rod group comprises two oppositely arranged first stirring rods, the first stirring rods are in the form of arc-shaped rods, and are symmetrically arranged on the two sides of the rod body of the driving rod; one end of each first stirring rod is fixedly connected to the outer side of the rod body of the driving rod, and the other end extends downward; the two stirring rods of the first stirring rod group form a "C"-shaped rod body combination with the opening downward; a plurality of first stirring rod groups are arranged on the driving rod; The second stirring rod is arranged at the bottom end of the rod body of the driving rod, and is in the form of a ring-shaped rod body; the top of the second stirring rod is provided with an opening, the opening is connected to the driving rod, and the two sides of the second stirring rod are in the form of inclined rods, and the bottom is folded into a circular arc structure.

9. The dunnage device of claim 8, wherein, The bottom end of the material discharge outlet of the first storage cylinder is an inclined open end; The first storage unit further comprises: The discharge adjusting assembly is arranged on the lower side of the discharge end of the first storage cylinder; the discharge adjusting assembly comprises: The adjusting frame is fixedly arranged below the cylinder body of the first storage cylinder; The adjusting plate is in the form of an inclined plate body, the adjusting plate is slidably connected to the adjusting frame, and the connection part of the adjusting plate and the adjusting frame is provided with a locking structure; one end of the adjusting plate extends toward the material discharge outlet of the first storage cylinder and is attached to the material discharge outlet; the end of the adjusting plate toward the material discharge outlet of the first storage cylinder is a low horizontal end.

10. The dunnage device of claim 6, wherein, The first temporary storage bin of the first temporary storage unit is in the form of a cylindrical bin body, and the bottom of the first temporary storage bin is provided with a discharge port on the horizontal side; the first temporary storage unit further comprises: The temporary discharge pipe is in the form of a horizontally arranged pipe body, one end of the temporary discharge pipe is connected to the discharge port of the first temporary storage bin, and the other end extends toward the second temporary storage unit.

11. The dunnage device of claim 10, wherein, The part of the temporary discharge pipe close to the first temporary storage bin is in the form of a cylindrical pipe body; the part of the temporary discharge pipe close to the second temporary storage unit is in the form of a "U"-shaped pipe body, and the upper part and the end part away from the first temporary storage bin are both open ends.

12. The dunnage device of claim 6, wherein, The second temporary storage unit further comprises: The second temporary storage frame is used for placing the second temporary storage bin. The turnover driving assembly is connected with the secondary temporary storage frame and can drive the secondary temporary storage frame to turn over; The horizontal movement driving assembly is connected with the secondary temporary storage frame and can drive the secondary temporary storage frame to move horizontally.

13. The dunnage device of claim 12, wherein, The secondary temporary storage bin comprises: The receiving part has an open top and a cavity for receiving materials; The connecting part is arranged on the lower side of the receiving part; The limiting part is arranged on the end of the connecting part away from the receiving part; The secondary temporary storage frame is a circular ring body, and the secondary temporary storage frame is connected with the secondary temporary storage bin through the connecting part.

14. The dunnage filling apparatus of claim 13, wherein, The receiving part of the secondary temporary storage bin is a cylindrical structure; the connecting part is a conical frustum structure; and the limiting part is a plate body; The connecting part of the secondary temporary storage frame and the secondary temporary storage bin is sleeved and slidably connected; The weighing assembly of the weighing unit is located on the moving path of the secondary temporary storage bin, and the weighing assembly can lift the secondary temporary storage bin when the secondary temporary storage bin is located on the upper side of the weighing assembly.

15. The dunnage device of claim 6, wherein, The secondary storage cylinder is a funnel-shaped structure, and the filling part comprises: The linkage is connected with the power assembly and moves in the vertical direction driven by the power assembly; the bottom end of the linkage is provided with a positioning groove in the shape of a circular cone; The filling rod is a vertically arranged rod body, and the outer diameter of the filling rod is smaller than the inner diameter of the material discharge port of the secondary storage cylinder; the top end of the filling rod is provided with a positioning block in the shape of a circular cone, and the positioning block corresponds to the positioning groove; The fixing part is sleeved outside the connection between the filling rod and the linkage, and the fixing part is threadedly connected with the linkage.

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