Feeding line and automatic batching line body system

Abstract

The invention relates to a feeding line and an automatic batching line body system, the feeding line is used for providing storage, conveying and feeding of a whole tray of raw materials, and the feeding line comprises a material storage conveying unit and a material feeding unit, the material storage conveying unit comprises an upper-layer material storage conveying platform and a lower-layer empty material returning platform, and the upper-layer material storage conveying platform provides a material storage function in a static state and provides a conveying function in a dynamic state; the lower-layer empty material returning platform is used for returning the unloaded empty trays; and the lifting feeding unit is arranged at the front end of the material storing and conveying unit to receive the material carrying trays from the material storing and conveying unit, and comprises a lifting mechanism and a feeding platform arranged above the lifting mechanism. A traditional material tank type batching mode in the powder coating industry is changed, multiple feeding lines are adopted to replace traditional different material storage tanks, on one hand, the problems of space occupation and difficult discharging caused by original material tank storage are solved, on the other hand, the batching automation degree and the batching efficiency are improved, and the production cost is reduced. And the labor cost and the labor intensity are reduced.

Description

Technical Field

[0001] This invention relates to a feeding line and automatic batching line system for the powder coating industry, belonging to the technical field of powder coating batching systems. Background Technology

[0002] The main production process of powder coatings includes batching, mixing, extrusion, tableting, grinding, separation, and dust removal. Among these, batching is the core step in powder coating production. Currently, the industry commonly uses a batching method that involves configuring multiple independent storage tanks in the raw material warehouse to store different raw materials. When raw materials enter the warehouse, different raw materials are put into their corresponding storage tanks for later use. During batching, a mixing cart passes through each storage tank in sequence. The material in each storage tank is quantitatively weighed by a weighing unit located at the bottom of the tank and then transferred to the mixing cart. Finally, the mixing cart collects the different raw materials and sends them to the mixing station for unloading, completing the batching process.

[0003] The traditional ingredient preparation process described above has the following main drawbacks: 1. After the raw materials are put into storage, they must be unpacked manually and then put into storage tanks. The manual operation is not only troublesome, but also labor-intensive.

[0004] 2. A product is often made from a variety of raw materials, and each raw material requires a separate storage tank. The tanks are large in size and numerous, resulting in a huge space occupation.

[0005] 3. The storage period from raw material entering the tank to production is relatively long. During the storage process, the material is prone to moisture absorption, clumping and deterioration. The increased viscosity of the material results in poor flowability, which not only affects material handling but also has a certain impact on the quality of the raw materials.

[0006] 4. In order to avoid the raw materials being stored in the tank for too long, the tank needs to be cleaned manually at regular intervals. However, the cleaning process will lead to a lot of labor costs and waste of raw materials.

[0007] 5. The entire batching process involves a lot of manual intervention and has a low degree of automation, resulting in low batching efficiency and high labor intensity.

[0008] 6. The weighing unit located below the storage tank has two defects. First, its weighing range is limited, resulting in insufficient batching accuracy. When the raw materials contain small amounts of material, manual measurement is required. Second, the flow rate limitation during the weighing process affects the overall batching efficiency.

[0009] In view of the above, there is an urgent need to provide an automated batching line system. Summary of the Invention

[0010] The present invention aims to solve the various problems mentioned above, and thereby provides a feeding line and an automatic batching line system. The feeding line is particularly suitable for front-end feeding of multiple raw materials and can replace the function of traditional raw material warehouses. The automatic batching line system can significantly improve the automation level and production efficiency of traditional batching.

[0011] To solve the above problems, the technical solution adopted by the present invention is as follows: A feeding line for providing storage, conveying, and supplying whole pallets of raw materials, characterized in that it includes: The material storage and conveying unit includes a frame body and an upper material storage and conveying platform and a lower empty material return platform configured on the frame body. The upper material storage and conveying platform provides material storage function when static and conveying function when dynamic. The lower empty material return platform is used to return empty pallets after unloading. The lifting feeding unit is located at the front end of the storage and conveying unit to receive the material pallet from the storage and conveying unit. It includes a lifting mechanism below and a feeding platform above the lifting mechanism.

[0012] Furthermore, the upper material storage and conveying platform and the lower empty material return platform have the same structural configuration, both including a drive motor, a chain drive mechanism output by the drive motor, and transmission rollers driven by the chain drive mechanism and arranged as a conveyor line.

[0013] Furthermore, the lifting mechanism of the lifting feeding unit includes a base, a cylinder disposed on the base, and a scissor support frame driven and controlled by the cylinder. The feeding platform of the lifting feeding unit is fixedly installed above the scissor support frame, and its structure is the same as the upper material storage and conveying platform and the lower empty material return platform of the material storage and conveying unit.

[0014] Furthermore, the lower empty material return platform is equipped with a backstop mechanism at its end. The backstop mechanism includes a column, a stop block, and a backstop block. The backstop block is mounted on the column via a rotating shaft and has a backstop end and a limiting end. The backstop end is used to adapt to the pallet and push against it to rotate so that the pallet can be returned normally. The limiting end is used to adapt to the stop block and abut against it so that the backstop end rotates to a position higher than the surface of the transmission roller of the platform, thereby preventing the pallet from retracting.

[0015] An automated batching line system is characterized by comprising: a feeding line, a depalletizing robot, and the batching line; The feeding line provides storage, conveying and supply of raw materials in whole pallets. Multiple lines are configured based on the type of raw material, with each feeding line corresponding to one type of raw material. It includes a storage and conveying unit and a lifting feeding unit. The storage and conveying unit includes an upper storage and conveying platform and a lower empty material return platform configured on the frame body. The lifting feeding unit includes a lower lifting mechanism and a feeding platform configured above the lifting mechanism. The depalletizing robot is used to depalletize, grab, and transport different raw materials from multiple feeding lines to the batching line. The batching line is used to uniformly distribute the raw materials required for the product.

[0016] Furthermore, the automatic batching line system also includes a package breaking and unpacking device and a material replenishment unit.

[0017] Furthermore, the spatial position of the bag breaking and unpacking device is lower than the feeding line. It includes a double-speed chain conveyor, a swing wheel drive mechanism, a robotic arm execution component, and cutting components and a crushing feed port 55 respectively configured at the bag breaking station and the crushing station. The swing wheel drive mechanism includes a swing wheel motor, a belt drive component, and a swing wheel. The swing wheel motor drives the swing wheel to rotate through the belt drive component. The swing wheel has a lever arm protruding from its outer circumference, and the lever arm has a bearing built into it. The robotic arm execution component includes a grooved wheel and a robotic arm turntable that are coaxially connected and configured vertically. The grooved wheel has three functional arms evenly distributed around its circumference, and each of the three functional arms has a sliding groove adapted to the bearing on the outer circumference of the swing wheel. The robotic arm turntable also has three functional arms distributed around its circumference. Each functional arm has a mechanical gripper with a suction cup connected to its lower part through a lifting cylinder. The mechanical gripper is used to pick up the material bags on the double-speed chain conveyor. The cutting component includes a feeding trough and a cutting motor and a cutting blade configured at the feeding trough opening.

[0018] Furthermore, the feeding unit includes a delivery and metering section and a bulk material mixing tank. The delivery and metering section includes a three-axis frame equipped with a mechanical gripper, a material carrying pallet, a hopper, and a screw feeder. The number of material carrying pallets, hoppers, and screw feeders corresponds one-to-one and is adapted to the quantity of raw materials. The hopper inlet has a cutter, and its bottom is connected to the screw feeder via a connected mixing chamber and a butterfly valve. The discharge end of the screw feeder is connected to the lower bulk material mixing tank via a weighing device.

[0019] Furthermore, the automatic batching line system also includes a gravity line for conveying raw materials on the batching line to the unpacking device. The inlet end of the gravity line is connected to the outlet end of the batching line, and the outlet end is connected to the double-speed chain conveyor line of the unpacking device.

[0020] The feeding line and automatic batching line system of this invention changes the traditional tank-based batching method in the powder coating industry. It replaces the traditional different storage tanks with multiple feeding lines, solving the problems of space occupation and unloading difficulties caused by traditional tank storage. Furthermore, it improves the automation level and efficiency of batching, reducing labor costs and labor intensity. No manual tank cleaning is required, significantly improving the efficiency of the entire batching process. The automatic batching line system, based on the usage of each raw material, mixes and distributes bulk and solid materials separately, overcoming the shortcomings of traditional batching methods that lack precision and require manual weighing, further improving batching efficiency and product quality. Attached Figure Description

[0021] Figure 1 : Schematic diagram of the overall structure of the feeding line in Example 1; Figure 2 Schematic diagram of the material storage and conveying unit; Figure 3 : Schematic diagram of the lifting feeding unit at the first angle; Figure 4 : Schematic diagram of the second angle structure of the lifting feeding unit; Figure 5 Schematic diagram of the anti-reverse mechanism; Figure 6 Schematic diagram of the automatic batching line system in Example 2; Figure 7 : Figure 6 A schematic diagram of the overall structure of the material supply line in the middle; Figure 8 : Figure 6 A schematic diagram of the overall structure of the package breaking and unpacking device in the middle; Figure 9 : Figure 8 A schematic diagram of the balance wheel drive mechanism in the diagram; Figure 10 : Figure 8 A schematic diagram of the robotic arm execution component structure; Figure 11 : Figure 6 A schematic diagram of the feeding unit structure in the middle; In the diagram: 1. Feeding line; 11. Storage and conveying unit; 11-1. Upper storage and conveying platform; 11-2. Lower empty material return platform; 12. Lifting and feeding unit; 121. Lifting mechanism; 1210. Base; 1211. Cylinder; 1212. Scissor support frame; 122. Feeding platform; 13. Anti-reverse mechanism; 131. Column; 132. Stop block; 133. Anti-reverse block; 133a. Anti-reverse end; 133b. Limiting end; 134. Rotating shaft; 2. Depalletizing robot; 3. Batching line; 4. Gravity line; 5. Crusher 51. Packaging and unpacking device; 52. Double-speed chain conveyor line; 53. Swing drive mechanism; 54. Swing motor; 55. Swing wheel; 56. Paddle arm; 57. Paddle arm bearing; 58. Robotic arm execution component; 59. Grooved wheel; 50. Slide chute; 51. Robotic arm turntable; 52. Grip cylinder; 53. Mechanical gripper; 54. Cutting component; 6. Feeding unit; 60. Bulk material mixing tank; 61. Three-axis frame; 62. Hopper; 63. Screw feeder; 64. Waste bag conveyor line; 7. Interlayer plate; 8. Material tray. Detailed Implementation

[0022] The invention will now be described in detail with reference to the accompanying drawings.

[0023] Example 1 This embodiment relates to a feeding line for powder coating production batching. This feeding line replaces the function of traditional raw material storage tanks. After the material pallet 8 is stored, there is no need for manual unloading into the storage tank. When batching is required for production, an AGV forklift can move the material pallet 8 to the feeding line.

[0024] Figure 1 The diagram shows the specific structure of the feeding line in this embodiment. The feeding line mainly consists of two main functional parts: a storage and conveying unit 11 that provides storage and conveying functions, and a lifting feeding unit 12 for feeding materials.

[0025] like Figure 2As shown, the material storage and conveying unit 11 includes a frame body and an upper material storage and conveying platform 11-1 and a lower empty material return platform 11-2 configured on the frame body. The upper material storage and conveying platform 11-1 and the lower empty material return platform 11-2 have the same structural configuration, both including a drive motor, a chain drive mechanism output by the drive motor, and transmission rollers driven by the chain drive mechanism and arranged as a conveyor line. The length of the upper material storage and conveying platform 11-1 is set to a multiple of the length of the material tray 8, and the length of each material tray 8 is equivalent to one storage station. In this embodiment, the upper material storage and conveying platform 11-1 is configured with three storage stations. When the motor is not working, the upper material storage and conveying platform 11-1 provides the storage function. When the motor starts, the transmission rollers of the upper material storage and conveying platform 11-1 provide the conveying function for the material trays 8 it carries. The dimensions of the lower empty material return platform 11-2 are the same as those of the upper material storage and conveying platform 11-1, and it is used to return empty trays after unloading. To facilitate forklift operations on empty pallets, a backstop mechanism 13 is provided at the end of the lower empty pallet return platform 11-2. The backstop mechanism 13 ensures that the forklift blocks and positions the empty pallet when it picks it up. The backstop mechanism 13, as follows: Figure 5 As shown, it includes a column 131, a stop block 132, and a backstop block 133. The backstop block 133 is mounted on the column 131 via a rotating shaft 134. It has a backstop end 133a and a limiting end 133b. The backstop end 133a is used to adapt to the pallet and push against it to rotate so that the pallet can be normally returned. The limiting end 133b is used to adapt to the stop block 132 and abut against it so that the backstop end 133a rotates to a position higher than the surface of the transmission roller of the platform, thereby preventing the pallet from returning.

[0026] like Figure 3-4 As shown, the lifting and feeding unit 12 is configured at the front end of the storage and conveying unit 11 to transfer pallets between the upper storage and conveying platform 11-1 and the lower empty material return platform 11-2 of the storage and conveying unit 11. That is, it is lifted to be level with the upper storage and conveying platform 11-1 and receives the loaded pallet at this position. After unloading, it is lowered to be level with the lower empty material return platform 11-2 and the empty pallet is transferred back at this position. The lifting and feeding unit 12 includes a lower lifting mechanism 121 and a feeding platform 122 disposed above the lifting mechanism 121. The lifting mechanism 121 includes a base 1210, a cylinder 1211 disposed on the base 1210, and a scissor support frame 1212 driven and controlled by the cylinder 1211. The feeding platform 122 is fixedly installed above the scissor support frame 1212. Its structure is the same as that of the upper storage and conveying platform 11-1 and the lower empty material return platform 11-2 of the storage and conveying unit 11. It includes a drive motor, a chain drive mechanism output by the drive motor, and transmission rollers driven by the chain drive mechanism and arranged as a conveyor line.

[0027] This embodiment describes a feeding line for powder coating production batching, which can replace the function of traditional raw material storage tanks. The whole pallet loading can reduce manual unloading, space occupation, and tank cleaning in the intermediate storage process. After the material pallet is put into storage, there is no need for manual unloading into the storage tank. When batching production is required, the material pallet is directly delivered to the line by a forklift. There is no need to pour the raw materials into the storage tank. It is equivalent to the storage process being directly connected to the batching production, which simplifies the batching process, reduces space occupation and labor costs, and improves batching efficiency.

[0028] Example 2 This embodiment relates to, as Figure 6 An automated batching line system for powder coating production is shown, comprising a feeding line 1, a depalletizing robot 2, a batching line 3, a gravity line 4, a package breaking and unpacking device 5, and a replenishment unit 6. The components of the automated batching line system are arranged in staggered layers within a space; wherein the feeding line 1, the depalletizing robot 2, and the batching line 3 are arranged on the upper layer and on the same layer, while the package breaking and unpacking device 5 and the replenishment unit 6 are arranged on the lower layer and on the same layer. The spatial layers are connected by the gravity line 4, one end of which is connected to the discharge end of the batching line 3, and the other end is connected to the package breaking and unpacking device 5.

[0029] The following sections will provide a detailed description of each component of the automated batching line system.

[0030] The feeding line 1 is used to provide storage, transportation and supply of material trays 8. Its structure is as described in Embodiment 1, so it will not be repeated in this embodiment. There are a total of 6 feeding lines 1 configured in this embodiment, which correspond to 6 kinds of product raw materials.

[0031] The depalletizing robot 2 is used to grab the material bags on the feeding line 1 and transfer them to the batching line 3. It includes a robotic arm with suction cups, which transfers the material bags on the feeding line 1 to the batching line 3 through the suction cups of the robotic arm.

[0032] The batching line 3 is used to transport all the raw material bags to the gravity line 4. Its structure includes a conveyor belt, and the conveying method adopts an existing common structure.

[0033] The gravity line 4 is used to transport the upper layer of material to the lower layer unpacking device 5. It runs through the upper and lower layers and achieves gravity transfer of the material bag by opening the interlayer plate 7 and configuring an inclined chute channel.

[0034] The unpacking device 5 is used to unpack the entire material bag, such as... Figure 8As shown, it includes a double-speed chain conveyor 51 connected to the discharge end of gravity line 4, a swing wheel drive mechanism 52, a robotic arm execution component 53, and a cutting component 54 and a crushing inlet 55 respectively arranged at the bag breaking station and the crushing station; the swing wheel drive mechanism 52 is as follows Figure 9 As shown, the device includes a balance wheel motor 521 and a balance wheel 522 driven by it. A lever arm 523 protrudes from the outer periphery of the balance wheel 522, and a lever arm bearing 524 is built into the lever arm 523. When the balance wheel 522 rotates, the lever arm bearing 524 on its outer peripheral lever arm 523 drives the robotic arm execution component 53 to perform corresponding actions. The robotic arm execution component 53 is as follows... Figure 10 As shown, the assembly includes a grooved wheel 531 coaxially connected and arranged vertically, and a robotic arm turntable 532. The grooved wheel 531 has three functional arms evenly distributed circumferentially, and each functional arm has a groove 531a adapted to the outer circumferential bearing 524 of the swing wheel 522. The robotic arm turntable 532 also has three functional arms distributed circumferentially. Each functional arm has a mechanical gripper 534 with a suction cup connected to its lower part via a gripper cylinder 533. The mechanical gripper 534 is used to pick up material bags from the double-speed chain conveyor line 51. The cutting assembly 54 includes a feeding trough and a cutting motor and a cutting blade disposed at the opening of the feeding trough. When the robotic arm turntable 532 rotates, it drives the robotic gripper 534 below to perform the actions of grabbing, breaking, and crushing in a cyclical manner. At the grabbing station, the robotic gripper 534 grabs the bag from the double-speed chain conveyor line 51 and lifts it to a predetermined position. At the breaking station, the robotic gripper 534 cuts the grabbed bag with a cutting blade, and the material enters the receiving tank at the bottom through the feeding chute. At the crushing station, the robotic gripper 534 puts the crushed bag into the crushing feeding port 55.

[0035] The replenishment unit 6 is used to measure and distribute bulk materials, such as... Figure 11 As shown, it comprises two parts: the upper part is mainly used for the distribution and metering of various raw materials, and the lower part is mainly used for the bulk material mixing tank 60. The distribution and metering part includes a three-axis frame 61 equipped with a mechanical gripper, a material tray 8, a hopper 62, a screw feeder 63, and a waste bag conveyor line 64. The number of material trays 8, hoppers 62, and screw feeders 63 corresponds one-to-one with the quantity of raw materials. Specifically, the top of the hopper 62 has a cutter to crush the bags; the bottom of the hopper 62 is connected to the screw feeder 63 below via a connecting mixing chamber and a butterfly valve. The discharge end of the screw feeder 63 is equipped with a weighing device, and the discharge port of the weighing device is connected to the lower bulk material mixing tank 60. The waste bag conveyor line 64 is used to output the crushed bags.

[0036] During operation, the mechanical gripper on the three-axis gantry 61 grabs the material bag on the material tray 8 and first sends it to the corresponding hopper 62 for crushing. The material entering the hopper 62 is mixed by the bottom mixing chamber and then enters the screw feeder 63 below. The screw feeder 63 sends the material to the weighing device for weighing and then enters the bulk material mixing tank 60 at the bottom. The mixed bulk material finally enters the feeding trolley.

[0037] In this embodiment, the automatic batching line system uses an electrical control system to coordinate the actions of each part of the line. Its operation is as follows: Whole bags (25kg of raw materials) are delivered by the feeding line. After the bags are delivered to the feeding line, the depalletizing robot grabs the required number of bags and places them on the batching line. The batching line then transports the bags to the bag breaking and unpacking device via a gravity line. The bags are broken by the bag breaking and unpacking device, and the material enters the receiving tank on the receiving trolley.

[0038] Bulk materials (raw materials within 25kg) are weighed and delivered in the feeding unit, and finally enter the bulk material mixing tank, where they are transferred by the receiving trolley and mixed with the pre-mixed bulk materials.

[0039] The automated batching line system in this embodiment places the upper part of the feeding line, depalletizing robot, batching line, and replenishment unit on the upper layer, and the lower part of the unpacking device and replenishment unit on the lower layer. The upper-layer batching line and the lower-layer unpacking device are connected by gravity lines. This spatial layer layout achieves automated batching of the powder coating production line. Simultaneously, bulk and solid materials are batched synchronously in separate zones, significantly improving batching accuracy and efficiency.

[0040] This invention is not limited to the embodiments discussed above. The above description of specific embodiments is intended to describe and illustrate the technical solutions involved in this invention. Obvious modifications, substitutions, or combinations based on the teachings of this invention should also be considered to fall within the protection scope of this invention. The above specific embodiments are used to disclose the best implementation methods of this invention, so that those skilled in the art can apply various embodiments and alternatives of this invention to achieve the objectives of this invention.

Claims

1. A feeding line for providing storage, conveying, and supplying whole pallets of raw materials, characterized in that, Include: The material storage and conveying unit includes a frame body and an upper material storage and conveying platform and a lower empty material return platform configured on the frame body. The upper material storage and conveying platform provides material storage function when static and conveying function when dynamic. The lower empty material return platform is used to return empty pallets after unloading. The lifting feeding unit is located at the front end of the storage and conveying unit to receive the material pallet from the storage and conveying unit. It includes a lifting mechanism below and a feeding platform above the lifting mechanism.

2. A feeding line as described in claim 1, characterized in that, The upper material storage and conveying platform and the lower empty material return platform have the same structural configuration, both including a drive motor, a chain drive mechanism output by the drive motor, and transmission rollers driven by the chain drive mechanism and arranged as a conveyor line.

3. A feeding line as described in claim 1, characterized in that, The lifting mechanism of the lifting feeding unit includes a base, a cylinder mounted on the base, and a scissor support frame driven and controlled by the cylinder. The feeding platform of the lifting feeding unit is installed above the scissor support frame, and its structure is the same as the upper material storage and conveying platform and the lower empty material return platform of the material storage and conveying unit.

4. A feeding line as described in claim 1, characterized in that, The lower empty material return platform is equipped with a pallet anti-reverse mechanism at its end. The anti-reverse mechanism includes a column, a stop block, and an anti-reverse block. The anti-reverse block is mounted on the column via a rotating shaft and has an anti-reverse end and a limiting end. The anti-reverse end is used to adapt to the pallet and push it to rotate so that the pallet can be returned normally. The limiting end is used to adapt to the stop block and abut it so that the anti-reverse end rotates to a position higher than the surface of the transmission roller of the platform, thereby preventing the pallet from retracting.

5. An automatic batching line system, characterized in that, include: The feeding line as described in any one of claims 1-4, as well as the depalletizing robot and the batching line; The feeding line is configured with multiple lines based on the type of raw material of the product. Each feeding line corresponds to one type of raw material of the product and provides storage, transportation and supply of raw materials for a whole pallet. The depalletizing robot is used to depalletize, grab, and transport different raw materials from multiple feeding lines to the batching line. The batching line is used to uniformly distribute the raw materials required for the product.

6. The automatic batching line system as described in claim 5, characterized in that, It also includes a package breaking and unpacking device and a material replenishment unit.

7. An automatic batching line system as described in claim 6, characterized in that, The packaging unpacking device is positioned below the material feeding line. It includes a double-speed chain conveyor, a swing wheel drive mechanism, a robotic arm execution assembly, and cutting components and a crushing inlet respectively configured at the packaging unpacking station and the crushing station. The swing wheel drive mechanism includes a swing wheel motor and a swing wheel. The swing wheel motor drives the swing wheel to rotate. The swing wheel has a lever arm protruding from its outer circumference, and the lever arm has a built-in bearing. The robotic arm execution assembly includes a grooved wheel and a robotic arm turntable coaxially connected and configured vertically. The grooved wheel has three functional arms evenly distributed around its circumference, and each of the three functional arms has a groove adapted to the bearing on the outer circumference of the swing wheel. The robotic arm turntable also has three functional arms distributed around its circumference. Each functional arm has a mechanical gripper with a suction cup connected to its lower part via a lifting cylinder. The mechanical gripper is used to pick up the material bags on the double-speed chain conveyor. The cutting assembly includes a feeding trough and a cutting motor and a cutting blade configured at the feeding trough opening.

8. An automatic batching line system as described in claim 7, characterized in that, The feeding unit includes a delivery and metering section and a bulk material mixing tank. The delivery and metering section includes a three-axis frame equipped with a mechanical gripper, a material tray, a hopper, and a screw feeder. The number of material trays, hoppers, and screw feeders corresponds one-to-one with the quantity of raw materials. The hopper inlet has a cutter, and its bottom is connected to the screw feeder via a connecting mixing chamber and a butterfly valve. The discharge end of the screw feeder is connected to the lower bulk material mixing tank via a weighing device.

9. An automatic batching line system as described in claim 8, characterized in that, The automatic batching line system also includes a gravity line for conveying raw materials on the batching line to the unpacking device. The feed end of the gravity line is connected to the discharge end of the batching line, and the discharge end is connected to the double-speed chain conveyor line of the unpacking device.

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