Weighing hopper, direct-to-box packing machine and packing method

Abstract

The application discloses a weighing hopper, which comprises a supporting body, a hopper body and a suspension piece; the hopper body is connected to the supporting body by the suspension piece; a weighing sensor device is arranged at the suspension piece; a slow discharging mechanism and a fast discharging mechanism are arranged at a discharging port of the hopper body; the slow discharging mechanism is provided with a discharging channel, one end of the discharging channel is located below the discharging port of the hopper body, and the other end of the discharging channel extends to the outside of the discharging port of the hopper body, so that materials are discharged from the hopper body through the discharging channel. The application further discloses a direct packing machine, which comprises a conveyor, and the conveyor is located below the discharging port of the hopper body. The application further discloses a packing method, which only needs two links: ship→packing→stacking. The application adopts the power-driven discharging (slow discharging mechanism) and gravity discharging (fast discharging mechanism) forms, realizes coarse and fine feeding, guarantees the weighing precision and working efficiency, saves the steps of manually adding and reducing goods, improves the packing efficiency, and reduces the goods loss.

Description

Technical Field

[0001] The invention belongs to the technical field of bulk cargo loading and unloading operations at ports, and particularly relates to a weighing bucket, a direct-taking case packing machine and a case packing method. Background Art

[0002] Bulk cargo loading and unloading has always been an important part of port loading and unloading operations and is also the object of competition among many ports, especially the loading and unloading of non-ferrous minerals.

[0003] The current production process is as follows: First, after a non-ferrous ore ship arrives at the port, a gantry crane grabs the ore and transfers it to a dump truck, which then transfers it to the cargo yard for stacking. Second, before loading the empty containers onto a flatbed truck, the truck is first weighed at a scale house to record the empty container's weight. The loaded container then arrives at the cargo yard for loading onto a weighing truck. The loaded truck then returns to the scale house for a second weighing to check the loaded weight. Workers then add or subtract the actual loaded quantity to the stated weight. Once transported to the designated location, the containers are leveled using a forklift and finally unloaded with a reach stacker to be loaded onto a train. The entire process involves seven steps: ship → transfer to a dump truck → storage yard → weighing the empty containers on a flatbed truck → loading onto a weighing truck → loading onto a flatbed truck and weighing → flatbed trucking → stacking. The current production process has several drawbacks: Multiple transfers result in significant spillage, leading to discrepancies between actual loading values ​​and standard values, making it difficult to ensure accuracy. Furthermore, it increases cargo damage and creates environmental pressures. The packaging process is complex and cumbersome, resulting in high costs and low efficiency, making it difficult to meet shippers' requirements.

[0004] In the past two years, inter-port competition has intensified, with ports vying to improve their container loading equipment and processes, striving to improve loading and unloading efficiency, conserve resources, and reduce energy consumption. Qingdao Port, for example, adopts a model of direct container loading after unloading without relocation. This utilizes multiple on-site routes, multiple bucket trucks for loading, and two conveyor belts for loading. This shortens the time from berthing to loading and shipping, while maintaining a consistently high level of efficiency. However, container loading accuracy cannot be guaranteed, requiring flatbed trucks to be weighed to verify accuracy, with workers adding or subtracting weight based on the actual loaded quantity. Summary of the Invention

[0005] In view of the current deficiencies, the present invention provides a weighing bucket, a direct-taking case packing machine and a case packing method using the direct-taking case packing machine.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A weighing bucket comprises a support body, a bucket body and a suspension piece; the bucket body is suspended and connected to the support body through the suspension piece; a weighing sensor device is provided at the suspension piece; the bucket body discharge port is provided with a slow discharge mechanism and a fast discharge mechanism, the slow discharge mechanism is provided with a discharge channel, one end of the discharge channel is located below the bucket body discharge port, and the other end extends to the outside of the bucket body discharge port, so that the material can be discharged from the bucket body through the discharge channel.

[0008] Furthermore, the slow unloading mechanism includes a power device and a conveyor belt, and the power device drives the conveyor belt to transport materials along the unloading channel.

[0009] Furthermore, the quick unloading mechanism includes a unloading door and a driving device. When the quick unloading mechanism is opened, the driving device drives the unloading door to open, and the material falls with gravity; when the quick unloading mechanism is closed, the driving device drives the unloading door to seal the bucket body discharge port.

[0010] Furthermore, the hopper body is divided into several fast-discharging hoppers and at least one slow-discharging hopper, and each hopper is provided with a corresponding discharge port; the slow-discharging mechanism is provided on the discharge port of the slow-discharging hopper, or the fast-discharging mechanism and the slow-discharging mechanism are provided on the discharge port of the slow-discharging hopper.

[0011] Furthermore, the slow hopper is located in the middle of the hopper body, the fast hopper is located on both sides of the slow hopper and is arranged in a line with the slow hopper, the slow hopper has an inverted cone structure, and / or the fast hopper is vertically arranged away from the side of the slow hopper.

[0012] Furthermore, it also includes a controller and a feeder for feeding materials into the bucket; the controller includes:

[0013] The initial module sets the total loading amount A, upper limit U, lower limit D, rough setting value C, and advance amount L;

[0014] Starting the first module of the feeder;

[0015] After receiving the signal that the feeding reaches the upper limit value U, the feeder is closed in sequence, and the fast feeding mechanism and the second module of the slow feeding mechanism are opened;

[0016] After receiving the signal that the material is discharged to the lower limit value D, the fast feeding mechanism and the slow feeding mechanism are closed in sequence, and the third module of the feeder is opened;

[0017] A fourth module for calculating the difference G according to the formula A-(UD);

[0018] After receiving the signal of feeding to the rough setting value C, the fifth module of the fast feeding mechanism is closed and the slow feeding mechanism is opened in sequence, wherein L <C<G;

[0019] After receiving the signal that the material is discharged to the set advance amount L, the sixth module of the slow feeding mechanism is closed;

[0020] Among them, the signals reaching the upper limit value U, the lower limit value D, and the advance amount L are collected by the weighing sensor device.

[0021] The present invention discloses a direct-take cartoning machine, comprising a conveyor, which is located below the bucket body discharge port. The conveyor comprises a belt conveyor, a telescopic mechanism and a frame. One end of the belt of the belt conveyor extends below the bucket body discharge port, and the other end extends away from the bucket body; the telescopic mechanism drives the conveyor belt to extend away from the bucket body, or retract toward the bucket body discharge port.

[0022] Furthermore, the telescopic mechanism includes a gear, a rack and a track; the gear is fixed on the frame, the rack is fixed on the conveyor belt, and the track is arranged between the frame and the conveyor belt.

[0023] Furthermore, a tractor head is provided at one end of the frame, and universal wheels are symmetrically provided on both sides of the tractor head.

[0024] The present invention also discloses a packing method, comprising the following steps:

[0025] S1: The empty box is weighed and parked at the end of the retractable conveyor belt of the direct-take carton packer, and the belt extends into the interior of the empty box;

[0026] S2 feeds the material to the direct-take cartoning machine, the weighing bucket weighs the material according to the given weight and discharges the material to the retractable conveyor at the bottom, and the material is fed into the box by the retractable conveyor;

[0027] After S3 is packed, it is weighed and directly stored at the container site.

[0028] The above technical solution can achieve the following beneficial effects:

[0029] (1) The present invention uses a weighing bucket to accurately control the weight of the material, which basically achieves the effect of achieving the weight mark in one packing, saving the steps of manually adding or removing goods, improving the packing efficiency and reducing cargo damage.

[0030] (2) When unloading, the fast and slow unloading mechanisms work together in the early stage to achieve fast unloading to a weight close to the standard weight. In the later stage, the fast unloading mechanism is closed and the slow unloading mechanism is used to unload the material finely to the standard weight. The fast and slow unloading mechanisms work together to ensure the efficiency of unloading and maximize the accuracy of packing.

[0031] (3) The material discharge channel of the slow discharge mechanism is different from the material falling path under gravity. The material does not fall under the action of gravity in the discharge channel, but is transported outward along the discharge path in a controllable manner by a conveyor belt driven by a power device, so that the discharge amount can be accurately controlled.

[0032] (4) The weighing process is highly automated and only requires a few operators to operate and supervise on site, thus liberating productivity.

[0033] (5) The "packing machine" has the advantages of high degree of automation, high measurement accuracy, simple calibration, high system reliability, low pollution, small cargo damage, and high production efficiency. It meets the requirements of cargo owners for accurate measurement and reduced cargo damage, reduces multiple operation links, saves workers and vehicles, and reduces production costs.

[0034] (6) This process allows the cargo to be loaded directly from the ship into boxes, thus avoiding spillage caused by the bucket truck operation and ensuring the accuracy of the loading. Through process improvement, the existing seven operation links are reduced to two, reducing five links, optimizing the process flow, reducing production costs, and improving production efficiency. It avoids dust pollution caused by multiple loading and unloading processes, as well as energy pollution caused by bucket truck and dump truck operations, alleviating environmental pressure. Direct metering and loading operations avoid the space occupied by stacking and transportation, reducing the pressure on the yard. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a side schematic diagram of the weighing bucket of the present invention.

[0036] Figure 2 It is a cross-sectional view of the weighing hopper of the present invention cut along the center line of the fast-discharging hopper.

[0037] Figure 3 It is a cross-sectional view of the slow-down hopper in the weighing hopper of the present invention.

[0038] Figure 4 It is a schematic diagram of the direct-take carton packing machine of the present invention.

[0039] Figure 5 It is a schematic diagram of a conveyor of the present invention.

[0040] Figure 6 It is a schematic cross-sectional view of the conveyor of the present invention.

[0041] Figure 7 yes Figure 6 Enlarged view of point A.

[0042] In the picture:

[0043] 1. Feeder, 2. Weighing bucket, 21. Bucket body, 211. Fast discharge hopper, 211a. Side wall, 212. Slow discharge hopper, 22. Support frame, 23. Fast discharge mechanism, 231. Drive device, 232. Discharge door, 24. Slow discharge mechanism, 241. Forced feeder, 241a. Chain plate, 3. Conveyor, 31. Belt conveyor, 32. Frame, 321. Hydraulic support legs, 33. Tractor, 331. Universal wheel, 34. Telescopic mechanism, 341. Gear, 342. Rack, 343. Track groove, 344. Roller. DETAILED DESCRIPTION

[0044] To further illustrate the technical means and effects of the present invention, the present invention is further described below with reference to the embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0045] If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the field or the product instructions shall be followed.

[0046] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions.

[0047] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, mechanical or electrical connections, direct or indirect connections through an intermediate medium, and internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances. Example 1:

[0048] The present invention discloses a weighing bucket 2, which includes a support body, a bucket body 21 and a suspension piece. The support body is a support frame 22, the suspension piece is a chain, and the bucket body 21 is suspended in the support frame 22 by four-corner chains, and is also provided with a limiter to control the shaking amplitude.

[0049] Weighing sensors (not shown) are installed on the suspension chain. The wiring on the weighing sensor terminal block uses a crimping method, making sensor replacement and maintenance easy. Four sensors are used, all digital sensors from German company HBM. They are equipped with movable limit switches that can be locked when the equipment is idle. Adjusting bolts on the four sensors must be lowered to remove stress from the sensors, preventing damage from bumps during equipment movement. The sensor scale is easy to operate.

[0050] The hopper body 21 is arranged to be larger at the top and smaller at the bottom, with a feed port at the top and a discharge port at the bottom. The hopper body 21 is divided into several fast discharge hoppers 211 and at least one slow discharge hopper 212, each of which is provided with a corresponding discharge port. In this embodiment, a fast discharge mechanism 23 is provided at the discharge port of the fast discharge hopper 211, which can quickly discharge the material in the discharge hopper. A slow discharge mechanism 24 and a fast discharge mechanism 23 are provided at the discharge port of the slow discharge hopper 212, which can realize slow and controllable discharge of materials. Depending on the on-site operation conditions, each discharge hopper can be equipped with a vibration motor to assist in discharge. When discharging, the fast and slow discharge mechanisms 23 and 24 work together in the early stage to achieve fast discharge to a weight close to the standard. In the later stage, the fast discharge mechanism is closed, and the slow discharge mechanism 24 is used to finely discharge the material to the standard weight. The fast and slow discharge mechanisms work together to ensure the efficiency of discharging and maximize the accuracy of packing.

[0051] In other embodiments, only a slow discharge mechanism may be provided on the discharge port of the slow discharge hopper 24, which is also within the scope of protection of the present invention.

[0052] Specifically, if Figure 2 As shown, the quick-discharge mechanism 23 includes a discharge gate 232 and a drive device. When the quick-discharge mechanism 23 is open, the drive device drives the discharge gate 232 open, allowing the material to fall due to gravity. When the quick-discharge mechanism 23 is closed, the drive device 231 drives the discharge gate 232 to block the hopper outlet, preventing the material from falling. A pair of quick-discharge mechanisms 23 are positioned at the discharge port of the quick-discharge hopper, with the discharge gates 232 of these mechanisms positioned opposite each other. In this embodiment, the drive device 231 is an electro-hydraulic push rod; in other embodiments, it can also be a motor, air cylinder, or oil cylinder. Furthermore, each quick-discharge hopper is equipped with two sets of vibrating air hammers to facilitate material discharge.

[0053] like Figure 3 As shown, the slow-discharge hopper 212 has an inverted cone-shaped structure to prevent material from falling during fine feeding. The hopper uses a large R to create corners, ensuring that non-ferrous ores with higher viscosity can be fed by controlled gravity. In this embodiment, the slow-discharge mechanism 24 is a mesh-belt forced feeder 241, including a chain plate 241a. The path for the chain plate 241a to convey the material is a discharge channel. One end of the chain plate 241a is located below the discharge port, and the other end extends outward from the discharge port, allowing the material to be controllably discharged from the hopper through the discharge channel. The chain plate electric door is located above the chain plate 241a, and the opening position is adjustable to prevent leakage after the material is grabbed. In addition, a fast-discharge mechanism is provided at the discharge port of the slow-discharge hopper. The slow-discharge mechanism is configured to cover a portion of the discharge port, while the fast-discharge mechanism is configured to cover another portion of the discharge port. Both mechanisms can discharge material independently. When both are closed, the discharge port of the slow-discharge hopper is fully closed.

[0054] Continue to refer Figure 1As shown, the slow discharge hopper 212 is located in the middle of the hopper body 21. The fast discharge hoppers 211 are located on both sides of the slow discharge hopper and arranged in a straight line with the slow discharge hopper. The side of the fast discharge hopper away from the slow discharge hopper is vertically arranged without inclination to facilitate the falling of materials. The fast discharge hopper also has rounded edges made with a large R. Combined with Figure 2 As shown, a fast discharge mechanism 23 is provided at the discharge outlet of the fast discharge hopper. The fast discharge hopper includes a split discharge door 232 and a driving device 231. When the fast discharge mechanism is opened, the driving device 231 drives the discharge door 232 to open, and the material falls by gravity; when the fast discharge mechanism 23 is closed, the driving device 231 drives the discharge door 232 to block the discharge outlet of the hopper body 21.

[0055] It is worth mentioning that the weighing hopper of the present invention further includes a controller and a feeder 1 for feeding materials into the hopper body. As Figure 4 shown, the feeder 1 includes a storage bin (not shown in the figure), and the lower port of the storage bin is a feed door. The controller includes several modules: an initial module for setting the total loading amount A, upper limit value U, lower limit value D, rough addition set value C, and lead amount L; a first module for starting the feeder; a second module for sequentially closing the feeder, opening the fast discharge mechanism and the slow discharge mechanism after receiving the signal that the feed reaches the upper limit value U; a third module for sequentially closing the fast discharge mechanism and the slow discharge mechanism and opening the feeder after receiving the signal that the discharge reaches the lower limit value D; a fourth module for calculating the difference G according to the formula A - (U - D); a fifth module for sequentially closing the fast discharge mechanism and opening the slow discharge mechanism after receiving the signal that the discharge reaches the rough addition set value C, where L < C < G; a sixth module for closing the slow discharge mechanism after receiving the signal that the discharge reaches the set lead amount L; among them, the signals of reaching the upper limit value U, lower limit value D, rough addition set value C, and lead amount L are collected by weighing sensors.

[0056] Specifically, in a specific embodiment of weighing mineral powder with a weighing bucket, the material is grabbed by a gantry crane grab and put into the storage bin. The total loading amount A is set to 27.75 tons, the upper limit value U of the weighing bucket is 15 tons, the lower limit value D is 0.5 tons, and the advance amount L is calculated to calculate the weighing and loading of each box twice. Start the equipment, the first module of the controller works, sends an open signal to the feeder, the feeding door opens, and the vibrating motor or air cannon cooperates to input the mineral powder into the weighing hopper. The weighing sensor detects the input weight at any time. When the weight reaches the set upper limit value U, the controller receives the signal that the feed has reached the upper limit value U, and the second module works, turns off the feeder in turn, opens the fast feeding mechanism and the slow feeding mechanism, and stops the vibrating motor or air cannon. At this time, the three feeding doors at the lower end of the weighing hopper are opened for discharging. The three feeding doors are opened and closed one by one according to the values ​​set by the on-site material flow conditions. The weighing sensor monitors the weight in the hopper at any time. When the material is discharged to the set lower limit value D, the third module of the controller works, turns off the fast feeding mechanism and the slow feeding mechanism in turn, opens the feeding door of the feeder, and all three feeding doors of the weighing hopper are closed. At this time, an actual discharge value of 14.5 tons is recorded. The feeder is restarted, and the first module of the controller operates again. After feeding to the upper limit U, the feeding door is closed. The fourth module of the controller operates and calculates the difference G according to the formula A-(UD). G is the required discharge value this time, and the result is G=13.25 tons. After receiving the signal that the feed has reached the upper limit value U, the second module of the controller operates again, successively closing the feeder, opening the fast feeding mechanism and the slow feeding mechanism, opening the three feeding doors, and discharging the material to the rough feeding set value C, which is set in advance and close to the target value. The fifth module operates, successively closing the fast feeding mechanism and opening the slow feeding mechanism to ensure weighing accuracy. Finally, the material is discharged to the set advance amount L. The sixth module of the controller operates and closes the slow feeding mechanism. From then on, the weighing of the box is completed. Multiple production lines can operate simultaneously, and each production line is controlled by a dedicated weighing controller and a programmable controller, and can operate independently. Example 2:

[0057] On the basis of Example 1, Figure 4 The present invention also discloses a direct-feed case packer, primarily used for case packing nonferrous ores such as copper and zinc. The case packer comprises a feeder 1, a weighing hopper 2, and a conveyor 3. It is equipped with a weighing instrument, is electrically and pneumatically driven, and is controlled by a PLC. It utilizes both power-driven unloading (slow unloading mechanism) and gravity unloading (fast unloading mechanism) to achieve both coarse and fine material feeding, ensuring weighing accuracy and operating efficiency. The case packer is sufficiently stable and resistant to wind, earthquakes, collisions, and overturning.

[0058] Among them, a conveyor 3 is provided below the discharge port of the bucket body 21. Figure 5As shown, the conveyor 3 includes a belt conveyor 31. The belt of the belt conveyor 31 is a conveyor belt. One end of the belt extends below the bucket body discharge port to receive the materials dropped from the bucket body discharge port. The other end extends away from the bucket body 21 and can penetrate into the interior of the container. The materials fall onto the belt from the bucket body discharge port, are transported by the belt into the container, and fall into the container at the end of the belt. Specifically, the belt conveyor 31 is a retractable belt conveyor, which relies on a retractable mechanism to extend away from the bucket body or retract toward the bucket body discharge port. In this embodiment, as shown in FIG. Figure 6 、 7 As shown, a gear rack mechanism is used as the telescopic mechanism to achieve telescopic extension and retraction, and has forward and reverse functions. The telescopic mechanism 34 includes a gear 341, a rack 342 and a track; the gear 341 is fixed on the conveyor frame 32, and the rack 342 is fixed on the bottom side of the belt conveyor. Track grooves 343 are provided on both sides of the belt conveyor, and rollers 344 are provided on the frame 32 corresponding to the track grooves 343. When it is necessary to drive the belt to extend and retract, the motor drives the gear to rotate, and the gear drives the rack to move, and the belt extends or retracts under the guidance of the track groove 343 and the roller 344.

[0059] The conveyor also includes hydraulic outriggers and a tractor. The system is driven by the tractor, which is mounted at one end of the frame and has universal wheels on either side, allowing the tractor to swing sideways and change direction when moving the conveyor. Four hydraulic outriggers, in a 321 configuration, ensure levelness and stability during operation.

[0060] The materials from the non-ferrous mine car and ship direct packing machine are packed into boxes through the conveyor. During the packing process, the dump truck is stationary, and the end of the retractable belt conveyor is first extended into the box, and the materials continuously fall into the container from the end of the belt. When the materials are accumulated to a height of 0.9m, the retractable belt conveyor takes a step back through the gear rack mechanism, and the packing is gradually completed. The work of the belt conveyor is completed completely automatically.

[0061] After the packing is completed, the conveyor will enter the low-speed operation state after a delay of 10 seconds. If the low-speed operation time exceeds 10 minutes, it will automatically stop. If the next box is started within 10 minutes, it will resume high-speed operation. Example 3:

[0062] Based on Example 2, the present invention also discloses a packing process using a direct-take packing machine. The non-ferrous ore direct-take packing machine can complete weighing and packing on the shore and directly send the box to the container yard for storage. The specific steps are:

[0063] Empty containers on the flatbed are weighed and parked at the end of the case packer's belt. A gantry crane grab bucket feeds the nonferrous ore direct case packer, which weighs the ore and automatically packs it onto a retractable conveyor at the bottom. Once packed, the flatbed is weighed and directly stored at the container yard.

[0064] The new process requires two steps: ship → (container vehicle is too empty) loading → (container vehicle is too heavy) palletizing.

[0065] The adoption of new equipment and new processes has brought significant advantages to bulk cargo handling at ports, especially non-ferrous ore handling, such as reduced costs, less cargo damage, improved efficiency, and lessened yard pressure. The specific analysis is as follows:

[0066] (1) In terms of reducing loading and unloading costs, the existing process requires about 10 drivers and workers for the entire operation process, while the new process requires 4 people. The current process of unloading and then loading boxes at the back yard costs 249.78 yuan per box in terms of labor and machinery. The direct loading process costs 135.81 yuan per box, saving 113.97 yuan per box.

[0067] (2) In terms of reducing cargo damage, the direct packing process is adopted to reduce the links of bulk cargo transfer, stacking, packing, weighing and measurement, which can minimize losses to the greatest extent. It is estimated that cargo damage can be reduced by 0.5 thousandths, which brings direct benefits to the cargo owners.

[0068] (3) In terms of improving efficiency, the existing packing process can handle an average of about 95 boxes per shift. According to the design capacity, the new process, with a 10-hour shift, can load no less than 120 boxes with two packing machines, with a cargo weight of no less than 3,330 tons, and a daily and night capacity of no less than 6,660 tons. This has the advantages of saving loading and unloading costs, high measurement accuracy, and clean and environmentally friendly. Once the new equipment is put into use, it will effectively support the competition for cargo sources, and the ship loading capacity will increase from 10,000 tons per ship to 20,000 or more.

[0069] (4) In terms of environmental protection and energy conservation, bulk cargo handling generates dust, which requires the use of spraying and sweeping vehicles to reduce dust and protect the environment. Spraying and sweeping vehicles are also necessary investments. This process adopts direct metering loading and unloading, which reduces the use of vehicles and loaders, as well as leakage during transportation, reduces dust generation and vehicle exhaust emissions, does not require spraying, and reduces the cost of bulk cargo covering.

[0070] (5) In terms of alleviating the pressure on the storage yard, non-ferrous ore storage sites occupy a large area. Direct metering and packing operations avoid the space occupied by stacking and transportation, thus reducing the pressure on the storage yard.

[0071] The above are all preferred embodiments of the present invention. For ordinary technicians in this technical field, without departing from the principle of the present invention, various equivalent modifications to the present invention are within the scope of protection of the claims attached to this application.

Claims

1. A weighing bucket, characterized by: It includes a support body, a hopper body and a hanging member; the hopper body is suspended and connected to the support body through the hanging member; a weighing sensing device is provided at the hanging member; a slow discharging mechanism and a fast discharging mechanism are provided at the discharging port of the hopper body. The slow discharging mechanism has a discharging channel, one end of the discharging channel is located below the discharging port of the hopper body, and the other end extends outward from the discharging port of the hopper body, so that materials are discharged from the hopper body through the discharging channel; the slow discharging mechanism includes a power device and a conveyor belt, and the power device drives the conveyor belt to convey materials along the discharging channel; the fast discharging mechanism includes a discharging door and a driving device. When the fast discharging mechanism is opened, the driving device drives the discharging door to open, and the materials fall by gravity; when the fast discharging mechanism is closed, the driving device drives the discharging door to block the discharging port of the hopper body; the hopper body is divided into several fast discharging hoppers and at least one slow discharging hopper, and each discharging hopper is correspondingly provided with a discharging port; the slow discharging mechanism is arranged at the discharging port of the slow discharging hopper, or the fast discharging mechanism and the slow discharging mechanism are arranged at the discharging port of the slow discharging hopper; the slow discharging hopper is located in the middle of the hopper body, the fast discharging hoppers are located on both sides of the slow discharging hopper and are arranged in a line with the slow discharging hopper, the slow discharging hopper is in an inverted conical structure, and / or the side surface of the fast discharging hopper far from the slow discharging hopper is vertically arranged; it also includes a controller and a feeder for feeding materials into the hopper body; the controller includes: an initial module for setting the total loading amount A, upper limit value U, lower limit value D, rough addition set value C, and advance amount L; a first module for starting the feeder; a second module for sequentially closing the feeder, opening the fast discharging mechanism and the slow discharging mechanism after receiving the signal that the feeding reaches the upper limit value U; a third module for sequentially closing the fast discharging mechanism and the slow discharging mechanism, and opening the feeder after receiving the signal that the discharging reaches the lower limit value D; a fourth module for calculating the difference value G according to the formula A-(U-D); a fifth module for sequentially closing the fast discharging mechanism and opening the slow discharging mechanism after receiving the signal that the discharging reaches the rough addition set value C, where L<C<G; a sixth module for closing the slow discharging mechanism after receiving the signal that the discharging reaches the set advance amount L; wherein, the signals of reaching the upper limit value U, lower limit value D, and advance amount L are collected by the weighing sensing device.

2. A direct-take cartoning machine comprising the weighing bucket according to claim 1, characterized in that: It includes a conveyor, the conveyor is located below the discharging port of the hopper body, the conveyor includes a belt conveyor, a telescopic mechanism and a frame body, one end of the belt of the belt conveyor extends to below the discharging port of the hopper body, and the other end extends away from the hopper body; the telescopic mechanism drives the conveyor belt to extend away from the hopper body or retract towards the discharging port of the hopper body.

3. The direct-take cartoning machine according to claim 2, characterized in that: The telescopic mechanism includes a gear, a rack and a track; the gear is fixed on the frame body, the rack is fixed on the conveyor belt, and the track is arranged between the frame body and the conveyor belt.

4. The direct-take cartoning machine according to claim 2, characterized in that: One end of the frame body is provided with a towing head, and universal wheels are symmetrically arranged on both sides of the towing head.

5. A cartoning method using the direct cartoning machine according to any one of claims 2 to 4, characterized in that: It includes the following steps: S1 Weigh the empty box, park it at the end of the telescopic conveyor belt of the direct loading and packing machine, and the belt extends into the empty box. S2 feeds the material to the direct-take cartoning machine, the weighing bucket weighs the material according to the given weight and discharges the material to the retractable conveyor at the bottom, and the material is fed into the box by the retractable conveyor; After S3 is packed, it is weighed and directly stored at the container site.

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