Feeding unit and control method thereof, automatic unpacking device

Abstract

A feeding unit and its control method, and an automatic unpacking device, are disclosed. The feeding unit includes a receiving bin, a lifting device, a first air knife, a second air knife, and a controller. The receiving bin is used to receive ton bags and includes an mounting wall and a bottom wall. The lifting device is housed in the receiving bin and is used to lift the ton bags. The first and second air knives are spaced apart on the mounting wall along the height direction of the receiving bin, with the installation height of the first air knife relative to the bottom wall being higher than that of the second air knife. The controller controls the first and second air knives to blow air onto the ton bags according to their height relative to the bottom wall. This invention solves the problem of excessive dust on the outer packaging bags during the unpacking process of ton bags in the prior art.

Description

Technical Field

[0001] This invention relates to the field of pulping technology, and in particular to a feeding unit and its control method, and an automatic unpacking device. Background Technology

[0002] Traditional unpacking equipment often results in dust accumulation and re-entrainment of ton bags during transport and handling due to dust adhering to the outer packaging. Most existing technologies do not address how to pre-clean the ton bags to reduce surface dust and minimize dust buildup and re-entrainment during unpacking. Therefore, effectively cleaning the ton bags and minimizing excessive dust on the outer packaging during unpacking is crucial. Summary of the Invention

[0003] In view of this, one object of the present invention is to provide a feeding unit and its control method, and an automatic unpacking device, so as to solve the problem of excessive dust on the outer packaging bag during the unpacking process of ton bags in the prior art.

[0004] In a first aspect, the present invention provides a feeding unit, comprising a receiving bin, a lifting device, a first air knife, a second air knife, and a controller; wherein, the receiving bin is used to receive a ton bag, the receiving bin comprising an mounting wall and a bottom wall; the lifting device is housed in the receiving bin, the lifting device being used to lift the ton bag; the first air knife and the second air knife are spaced apart on the mounting wall along the height direction of the receiving bin, the mounting height of the first air knife relative to the bottom wall being higher than the mounting height of the second air knife relative to the bottom wall; the controller is used to control the first air knife and the second air knife to blow air onto the ton bag according to the height of the ton bag relative to the bottom wall.

[0005] In one embodiment, the extension direction of the first air knife is parallel to the width direction of the mounting wall, or the extension direction of the first air knife intersects the width direction of the mounting wall, and the second air knife is parallel to the first air knife or has an angle with it.

[0006] In one embodiment, the air outlet direction of the first air knife forms an angle with the mounting wall. Along the height direction of the receiving chamber, the first air knife blows air upwards toward the ton bag, and the second air knife blows air downwards toward the ton bag.

[0007] In one embodiment, the length of the first air knife is A1, the length of the second air knife is A2, the dimension of the ton bag in the length direction of the first air knife is B1, and the dimension of the ton bag in the length direction of the second air knife is B2, satisfying: 0.7≤A1 / B1≤2, 0.7≤A2 / B2≤2.

[0008] In one embodiment, there are multiple mounting walls, which together enclose the receiving space of the receiving chamber. At least one mounting wall is provided with a first air knife and a second air knife. One of the mounting walls has a feed inlet, through which the ton bag enters the receiving chamber.

[0009] In one embodiment, the feeding unit further includes a baffle shell connected to the mounting wall. The baffle shell covers the outer periphery of the first air knife and / or the second air knife. An air shower opening is provided on the baffle shell, and the air outlet of the first air knife and / or the second air knife communicates with the air shower opening.

[0010] In one embodiment, the windproof shell covers the outer periphery of the first air knife. The windproof shell includes a windproof component, which is housed inside the windproof shell. The windproof component divides the internal space of the windproof shell into a first space and a second space. The windproof component has a slot that connects the first space and the second space. The first space is connected to the air shower opening. The first air knife extends from the second space into the first space and abuts against the windproof component.

[0011] In one embodiment, the feeding unit further includes a sealing element disposed on the bayonet, and the first air knife abuts against the air baffle through the sealing element; or, the sealing element is disposed on the outer periphery of the air shower, and the outer periphery of the air outlet of the first air knife abuts against the outer peripheral wall of the air shower through the sealing element.

[0012] In one embodiment, the wind deflector is disposed on the outer periphery of the first air knife. The wind deflector includes a first guide member, which is housed inside the wind deflector. The first guide member includes a first guide surface and a second guide surface, which are spaced apart from each other. The air outlet of the first air knife is located between the first guide surface and the second guide surface, and the first guide surface and the second guide surface form a non-zero angle.

[0013] In one embodiment, the windproof shell includes a second guide member, which is disposed at the air shower opening and is movably connected to the wall of the air shower opening.

[0014] In one embodiment, the mounting wall is provided with a first air shower and a second air shower. The first air knife and the second air knife are disposed on the side of the mounting wall facing away from the ton bag. The air outlet of the first air knife is connected to the first air shower, and the air outlet of the second air knife is connected to the second air shower.

[0015] In one embodiment, the feeding unit further includes a detector, which is electrically connected to the controller. The detector is used to detect the height of the ton bag, and the controller controls the first air knife and the second air knife to blow air onto the ton bag according to the detection result of the detector.

[0016] Secondly, the present invention provides a control method for a feeding unit, the feeding unit comprising a receiving bin, a lifting device, a first air knife, a second air knife, and a controller, wherein the first air knife and the second air knife are spaced apart on the mounting wall along the height direction of the receiving bin; the control method for the feeding unit comprises: controlling the lifting device to lift the ton bag; controlling the first air knife and the second air knife to blow air onto the ton bag according to the height of the ton bag relative to the bottom wall; wherein, when the height of the ton bag relative to the bottom wall is lower than the installation height of the second air knife relative to the bottom wall, the second air knife is activated to blow air onto the top surface of the ton bag, and when the height of the ton bag relative to the bottom wall is higher than the installation height of the first air knife relative to the bottom wall, the first air knife is activated to blow air onto the bottom surface of the ton bag.

[0017] In one embodiment, controlling the first air knife and the second air knife to blow air onto the ton bag according to the height of the ton bag relative to the bottom wall further includes: when the height of the ton bag relative to the bottom wall is higher than the installation height of the first air knife relative to the bottom wall; keeping the first air knife and the second air knife in operation; or keeping the first air knife in operation and stopping the second air knife.

[0018] Thirdly, the present invention provides an automatic unpacking device, the automatic unpacking device comprising a feeding unit as described in any one of the embodiments of the first aspect.

[0019] The feeding unit provided by this invention is applied in automatic unpacking equipment, mainly for cleaning ton bags by blowing air before dismantling. By setting up a receiving chamber, the blowing process of the ton bags can be kept in an independent and closed environment, preventing dust generated during the blowing process from scattering and facilitating centralized treatment in the receiving chamber. Furthermore, the airflow stability in the receiving chamber is high, resulting in better cleaning effect. By setting up a lifting device, the ton bags are transferred to the next unit for post-processing, and the lifting device also lifts the ton bags to move, thereby enabling more comprehensive cleaning of all surfaces of the ton bags and avoiding situations where only localized blowing cleaning is possible. By setting up a first air knife and a second air knife, and using a controller to control the first and second air knives, not only is the blowing efficiency improved, but the intelligence of blowing the ton bags is also enhanced. The first and second air knives are spaced apart along the height direction of the receiving chamber, which also enables comprehensive blowing of the sides and top surfaces of the ton bags. All of these measures reduce the dust adhering to the outside of the packaging bags during the unpacking process and reduce the impact of dust on the machine. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an external view of an automatic unpacking device in one implementation method;

[0022] Figure 2 This is a front view of an automatic unpacking device in one embodiment;

[0023] Figure 3 This is a schematic diagram of a lifting device lifting a ton bag in one embodiment;

[0024] Figure 4 This is a schematic diagram of the first and second air knives blowing a ton bag in one embodiment;

[0025] Figure 5 This is a schematic diagram of the arrangement of multiple first and second air knives in one embodiment;

[0026] Figure 6 This is a schematic diagram showing the ratio of the first and second air knives to the size of the ton bag in one embodiment.

[0027] Figure 7 This is a schematic diagram of the installation of air knives on the first and second mounting walls in one embodiment;

[0028] Figure 8 This is an external view of the windshield and air blade in one embodiment;

[0029] Figure 9 This is a cross-sectional schematic diagram of the windshield and the first wind knife in one embodiment;

[0030] Figure 10 This is a cross-sectional schematic diagram of a windshield including a windshield element and a sealing element in one embodiment;

[0031] Figure 11 This is a cross-sectional schematic diagram of a windshield including a windshield element and a sealing element in another embodiment;

[0032] Figure 12 This is a cross-sectional schematic diagram of a windshield in one embodiment, including a first guide member and a second guide member;

[0033] Figure 13 This is an exterior view of the automatic unpacking device in one implementation method from another perspective;

[0034] Figure 14 This is a flowchart of a control method for a feeding unit in one implementation.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100 - Feeding unit, 10 - Storage chamber, 11 - Mounting wall, 111 - First mounting wall, 112 - Second mounting wall, 113 - Third mounting wall, 114 - Fourth mounting wall, 12 - Bottom wall, 20 - Lifter, 30 - First air knife, 301 - Upper inclined surface, 302 - Lower inclined surface, 40 - Second air knife, 60 - Windproof shell, 6001 - Air outlet baffle, 6002 - Side baffle, 6003 - Top baffle, 6004 - Bottom baffle, 601 - First space 602-Second space, 603-Gateway, 61-Air shower opening, 611-First air shower opening, 612-Second air shower opening, 62-Wind deflector, 63-Sealing component, 64-First guide component, 6401-First guide block, 6402-Second guide block, 641-First guide surface, 642-Second guide surface, 65-Second guide component; 200-Ton bag, X-Height direction, Y-Width direction, Z-Thickness direction, P1-First axis, P2-Second axis. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] It is understood that the terminology in the specification, claims, and accompanying drawings of this invention is for describing specific embodiments only and is not intended to limit the invention. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Unless the context clearly states otherwise, the singular forms "a" and "" are also intended to include the plural forms. The term "comprising," and any variations thereof, are intended to cover non-exclusive inclusion. Furthermore, this invention can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of this invention, wherein terms indicating orientation such as up, down, left, and right refer only to the position of the illustrated structure in the corresponding drawings. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood on a case-by-case basis. The term "and / or" as used in this invention refers to any combination of one or more of the associated listed items, and all possible combinations, including such combinations.

[0039] The following description outlines preferred embodiments for carrying out the invention; however, this description is intended to illustrate the general principles of the invention and is not intended to limit the scope of the invention. The scope of protection of this invention is determined by the appended claims.

[0040] This invention provides a feeding unit 100, which is installed in an automatic unpacking device. Please refer to [reference needed]. Figures 1-14 .

[0041] In one implementation method, please refer to Figures 1-3 The feeding unit 100 includes a receiving chamber 10, a lifting device 20, a first air knife 30, a second air knife 40, and a controller. The receiving chamber 10 is used to receive a ton bag 200 and includes a mounting wall 11 and a bottom wall 12. The lifting device 20 is housed in the receiving chamber 10 and is used to lift the ton bag 200. The first air knife 30 and the second air knife 40 are spaced apart on the mounting wall 11 along the height direction X of the receiving chamber 10. The installation height of the first air knife 30 relative to the bottom wall 12 is higher than that of the second air knife 40 relative to the bottom wall 12. The controller is used to control the first air knife 30 and the second air knife 40 to blow air onto the ton bag 200 according to the height of the ton bag 200 relative to the bottom wall 12.

[0042] The internal space of the receiving chamber 10 is cubic in shape. The inner wall space of the receiving chamber 10 is enclosed by a bottom wall 12 and mounting walls 11. The mounting walls 11 also serve as the side walls of the receiving chamber 10, so the number of mounting walls 11 in the receiving chamber 10 can be four. In a specific embodiment, one of the mounting walls 11 can serve as a door for feeding (ton bag 200), meaning the ton bag 200 enters the receiving chamber 10 from the side. In a specific embodiment, the feeding unit 100 can be placed directly on the ground, so the bottom wall 12 of the receiving chamber 10 can be connected to the ground; alternatively, the feeding unit 100 can be placed on a workbench, and the bottom wall 12 of the receiving chamber 10 can be connected to the workbench surface.

[0043] The lifting device 20 is housed in the receiving chamber 10. Specifically, the lifting device 20 can be mounted on the bottom wall 12. The lifting device 20 can move up or down along the height direction X of the receiving chamber 10. It should be noted that the height direction X of the receiving chamber 10 refers to the direction perpendicular to the ground when the feeding unit 100 is placed on the ground; or the direction perpendicular to the table surface when the feeding unit 100 is placed on the workbench.

[0044] The first air knife 30 and the second air knife 40 are both installed on the same mounting wall 11. Please refer to [reference needed]. Figure 2 Along the height direction X of the receiving chamber 10, the installation height of the first air knife 30 relative to the bottom wall 12 is higher than that of the second air knife 40 relative to the bottom wall 12, and the first air knife 30 and the second air knife 40 are spaced apart. In a specific embodiment, both the first air knife 30 and the second air knife 40 can extend along the width direction Y of the mounting wall 11 or extend obliquely. It should be noted that the width direction Y of the mounting wall 11 is perpendicular to the height direction X mentioned above. The mounting wall 11 can be rectangular, so the height direction X mentioned above is the direction of the long side of the mounting wall 11, and the width direction Y mentioned above is the direction of the wide side of the mounting wall 11.

[0045] The controller is located inside or outside the containment chamber 10. The controller may include a smart chip or smart terminal (such as a computer, mobile phone, PDA, wearable device, etc.). The controller can be a device with information acquisition, processing, and connectivity capabilities, enabling intelligent sensing, interaction, and big data services. In a specific embodiment, the controller has the ability to control the start and stop of the first air knife 30 and the second air knife 40, or the ability to control the first air knife 30 and the second air knife 40 to change the airflow. The controller also has the ability to receive information about the height of the ton bag 200, and can control the first air knife 30 and the second air knife 40 based on this height information.

[0046] It should be noted that the height of the ton bag 200 mentioned above refers to its height relative to the bottom wall 12 after being lifted by the jacking device 20. For example, please refer to... Figure 3 When the lifting device 20 is not activated and returns to the lowest point, the initial distance between the platform of the lifting device 20 and the bottom wall 12 is 10 (units are not limited). After the ton bag 200 enters the containment chamber 10 and is placed on the lifting device 20, the height Hs of the ton bag 200 is equal to the distance Ht between the platform of the lifting device 20 and the bottom wall 12 plus the height Hd of the ton bag 200 itself, that is, Hs=Ht+Hd. The controller controls the first air knife 30 and the second air knife 40 according to the size of Hs.

[0047] The feeding unit 100 provided by this invention is applied in an automatic unpacking device, mainly for cleaning the ton bags 200 by blowing them before dismantling. By setting up a receiving chamber 10, the blowing process of the ton bags 200 can be kept in an independent and closed environment, preventing dust generated during the blowing process from scattering and facilitating centralized treatment in the receiving chamber 10. Furthermore, the airflow stability of the blowing process in the receiving chamber 10 is high, resulting in better cleaning effect. By setting up a lifting device 20, it is used to transfer the ton bags 200 to a subsequent unit for post-processing, and also to lift the ton bags 20. The 0-movement design allows for more comprehensive cleaning of all surfaces of the ton bag 200, avoiding situations where only localized air spraying is possible. By setting up the first air knife 30 and the second air knife 40, and using a controller to control the first air knife 30 and the second air knife 40, not only is the air spraying efficiency improved, but the intelligence of the air spraying ton bag 200 is also enhanced. The first air knife 30 and the second air knife 40 are also spaced X-shaped along the height direction of the receiving chamber 10, which can also provide comprehensive air spraying to the sides and top of the ton bag 200. This reduces the dust that adheres to the outside of the packaging bag during the unpacking process of the ton bag 200 and reduces the impact of dust on the machine.

[0048] In one implementation method, please refer to Figure 2The first air knife 30 extends parallel to the width direction Y of the mounting wall 11, or intersects the width direction Y of the mounting wall 11. The second air knife 40 is parallel to or at an angle to the first air knife 30. In a specific embodiment, both the first air knife 30 and the second air knife 40 are elongated. The first air knife 30 extends parallel to the width direction Y of the mounting wall 11, so that the first air knife 30 can blow air parallel to the width direction Y of the mounting wall 11, and the second air knife 40 can be parallel to the first air knife 30. In other embodiments, the first air knife 30 can be installed obliquely on the mounting wall 11, and the second air knife 40 can be parallel to the first air knife 30. In other embodiments, the first air knife 30 extends parallel to the width direction Y of the mounting wall 11, and the second air knife 40 can be installed obliquely on the mounting wall 11. By setting the extension direction of the first air knife 30 and the second air knife 40 and their setting angle, the present invention can ensure that the combination of the first air knife 30 and the second air knife 40 can cover a wider air shower range, thereby further improving the air shower effect.

[0049] In one implementation method, please refer to Figure 4 The first air knife 30 has an angle between its outlet direction and the mounting wall 11. Along the height X of the receiving chamber 10, the first air knife 30 blows air upwards towards the ton bag 200, while the second air knife 40 blows air downwards towards the ton bag 200. It should be noted that the air knife (including the first air knife 30 and the second air knife 40) primarily has an internal air cavity into which external airflow enters. An air outlet is located on the side (thinner part) of the air knife, connecting to the ventilation cavity and extending along the length of the air knife. The outlet direction of the first air knife 30 is the direction of the line connecting its outlet to its back surface. Figure 4 As shown by the dashed line.

[0050] In a specific embodiment, the air outlet direction forms an angle α with the mounting wall 11, with the angle α ranging from 0° to 90°. Thus, the first air knife 30 blows air upwards onto the ton bag 200, and the second air knife 40 blows air downwards onto the ton bag 200. When the height of the ton bag 200 is lower than that of the second air knife 40, the top surface of the ton bag 200 is below the second air knife 40, allowing the second air knife 40 to blow air onto the top surface of the ton bag 200. Therefore, during the ascent of the ton bag 200, the air outlet of the second air knife 40 faces the side of the ton bag 200. When the height of the ton bag 200 is higher than that of the second air knife 40, the top surface of the ton bag 200 exceeds the air outlet of the second air knife 40, and the air outlet of the second air knife 40 then faces the side of the ton bag 200. This invention features a first air knife 30 and a second air knife 40 both positioned at an angle to the mounting wall 11. This allows the lower-positioned second air knife 40 to blow air downwards onto the ton bag 200, effectively spraying not only the sides but also the top surface of the ton bag 200, reducing dust on its top. Furthermore, the upward blowing of the first air knife 30 also reaches the bottom of the ton bag, reducing dust there as well. Since the airflow directions of the first and second air knives 40 do not intersect, their airflows do not interfere with each other, ensuring the stability of the air shower.

[0051] In one implementation method, please refer to Figure 4 The first air knife 30 and / or the second air knife 40 are rotatably mounted on the mounting wall 11. Specifically, the first air knife 30 can rotate about a first axis P1, and the second air knife 40 can rotate about a second axis P2, where the first axis P1 is a straight line parallel to the extension direction of the first air knife 30, and the second axis P2 is a straight line parallel to the extension direction of the second air knife 40. In a specific embodiment, both the first air knife 30 and the second air knife 40 are parallel to the width direction Y of the mounting wall 11. The first air knife 30 rotates about the first axis P1 parallel to the width direction Y, thereby swinging up and down relative to the mounting wall 11, that is, the first air knife 30 can blow air towards the ton bag 200 from top to bottom, or from bottom to top, or horizontally towards the ton bag 200. Of course, the second air knife 40 can also achieve the above function by rotating about the second axis P2 parallel to the width direction Y. The controller controls the rotation of the first air knife 30 and / or the second air knife 40 to blow air onto the ton bag 200 based on the height of the ton bag 200 relative to the bottom wall 12. This invention, by making the first air knife 30 and the second air knife 40 rotatable, and by controlling the rotation angle of the first air knife 30 and the second air knife 40, allows the first air knife 30 and the second air knife 40 to blow air onto different surfaces of the ton bag 200 according to its height.

[0052] In one implementation method, please refer to Figure 5The first air blades 30 are multiple, and are spaced apart along the height direction X of the receiving chamber 10. The multiple first air blades 30 are parallel, or at least two of them form an angle. In a specific embodiment, the number of first air blades 30 can be 2 to 5, and they are equidistantly spaced along the height direction X of the receiving chamber 10. Optionally, all the first air blades 30 are parallel to the width direction Y of the mounting wall 11; or, at least one first air blade 30 intersects the width direction Y of the mounting wall 11, i.e., it is obliquely mounted on the mounting wall 11.

[0053] In one implementation method, please refer to Figure 5 The number of second air blades 40 is multiple, and the multiple second air blades 40 are arranged at intervals along the height direction X of the receiving chamber 10. The multiple second air blades 40 are parallel or at least two second air blades 40 have an included angle. In a specific embodiment, the number of second air blades 40 can be 2 to 5, and the multiple second air blades 40 are arranged at equal intervals along the height direction X of the receiving chamber 10. Optionally, all second air blades 40 are parallel to the width direction Y of the mounting wall 11; or, at least one second air blade 40 intersects the width direction Y of the mounting wall 11, that is, it is obliquely mounted on the mounting wall 11.

[0054] In one embodiment, there are multiple second air knives 40, and only one first air knife 30; alternatively, there are multiple first air knives 30, and only one second air knife 40. It is understood that when the height of the ton bag 200 exceeds that of all the first air knives 30, the first air knives 30 primarily spray air onto the sides of the ton bag 200, performing the same task as the second air knives 40. Therefore, the number of first air knives 30 can be set to one, which facilitates controller control and reduces costs. By setting the number of first air knives 30 and / or second air knives 40 to multiple, this invention can further improve the spraying efficiency and also achieve the effects of facilitating controller control and reducing costs.

[0055] In one implementation method, please refer to Figure 6The length of the first air knife 30 is A1, the length of the second air knife 40 is A2, the dimension of the ton bag 200 along the length direction of the first air knife 30 is B1, and the dimension of the ton bag 200 along the length direction of the second air knife 40 is B2, satisfying: 0.7≤A1 / B1≤2, 0.7≤A2 / B2≤2. Optionally, A1 / B1 can be 0.7, 0.8, 1, 1.2, 1.4, 1.6, 1.8, or 2; A2 / B2 can be 0.7, 0.8, 1, 1.2, 1.4, 1.6, 1.8, or 2. This invention, by controlling the ratio of the dimensions of the first air knife 30 and the second air knife 40 to the dimensions of the ton bag 200, allows the first air knife 30 and the second air knife 40 to spray as much air as possible onto the sides, top, and bottom surfaces of the air knife in the width direction Y, thereby improving the cleaning effect.

[0056] In one implementation method, please refer to Figure 1 and Figure 7 The mounting walls 11 consist of multiple pieces, which together enclose the receiving space of the receiving chamber 10. At least one mounting wall 11 is equipped with a first air knife 30 and a second air knife 40. One of the mounting walls 11 has a feed inlet for the ton bag 200 to enter the receiving chamber 10 through the feed inlet. In a specific embodiment, there are four mounting walls 11, one of which is also configured as a door with a feed inlet.

[0057] In a specific embodiment, the ton bag 200 enters the receiving chamber along the thickness direction Z, and after the ton bag 200 is lifted, it continues to leave the receiving chamber along the thickness direction Z under the hook of the fishing device. Therefore, only the first air knife 30 and the second air knife 40 can be set on the mounting wall of the chamber door, and one air knife (first air knife 30 or second air knife 40) can be set on the other three mounting walls. This not only ensures that the ton bag 200 is sprayed on all six sides, but also allows the ton bag 200 to be continuously sprayed on the side where the first air knife 30 and the second air knife 40 are installed at the same time.

[0058] In one implementation method, please refer to Figure 7 The multiple mounting walls 11 include a first mounting wall 111 and a second mounting wall 112 arranged opposite to each other in the thickness direction Z. The first air knife 30 on the first mounting wall 111 and the first air knife 30 on the second mounting wall 112 are parallel and opposite in the thickness direction Z. The second air knife 40 on the first mounting wall 111 and the second air knife 40 on the second mounting wall 112 are parallel and opposite in the thickness direction Z. Alternatively, the orthographic projection of the first air knife 30 on the first mounting wall 111 onto the second mounting wall 112 is located between the first air knife 30 and the second air knife 40 on the second mounting wall 112.

[0059] The multiple mounting walls 11 include a first mounting wall 111, a second mounting wall 112, a third mounting wall 113, and a fourth mounting wall 114. The first mounting wall 111, the third mounting wall 113, the second mounting wall 112, and the fourth mounting wall 114 are connected in a ring in sequence; wherein, the first mounting wall 111 and the second mounting wall 112 are arranged opposite each other, and the third mounting wall 113 and the fourth mounting wall 114 are arranged opposite each other; optionally, any one of the first mounting wall 111, the second mounting wall 112, the third mounting wall 113, and the fourth mounting wall 114 can be used as a door.

[0060] Optionally, when there is only one first air knife 30 and one second air knife 40, in a specific embodiment, the first air knife 30 on the first mounting wall 111 and the first air knife 30 on the second mounting wall 112 are arranged parallel and opposite to each other, and the second air knife 40 on the first mounting wall 111 and the second air knife 40 on the second mounting wall 112 are also arranged parallel and opposite to each other. In other embodiments, the orthographic projection of the first air knife 30 on the first mounting wall 111 onto the second mounting wall 112 is located between the first air knife 30 and the second air knife 40 on the second mounting wall 112, and the orthographic projection of the second air knife 40 on the first mounting wall 111 onto the second mounting wall 112 is located below the second air knife 40 on the second mounting wall 112.

[0061] Optionally, when there are multiple first air blades 30 and second air blades 40, and the number of both is the same; in a specific embodiment, the first air blades 30 on the first mounting wall 111 and the first air blades 30 on the second mounting wall 112 are arranged parallel and opposite to each other, and the second air blades 40 on the first mounting wall 111 and the second air blades 40 on the second mounting wall 112 are also arranged parallel and opposite to each other. In other embodiments, the orthographic projection of the first air blade 30 on the first mounting wall 111 onto the second mounting wall 112 is located between two adjacent first air blades 30 on the second mounting wall 112, and the orthographic projection of the second air blade 40 on the first mounting wall 111 onto the second mounting wall 112 is located between two adjacent second air blades 40 on the second mounting wall 112.

[0062] In one embodiment, please refer to Figure 8The feeding unit 100 also includes a baffle shell 60, which is connected to the mounting wall 11. The baffle shell 60 covers the outer periphery of the first air knife 30 and / or the second air knife 40. An air shower opening 61 is provided on the baffle shell 60, and the air outlets of the first air knife 30 and / or the second air knife 40 communicate with the air shower opening 61. By covering the air knife with a baffle shell 60, this invention not only avoids the influence of dust on the air knife but also protects it, preventing the bulky ton bag 200 from interfering with the air knife. Simultaneously, the baffle shell 60 also serves to guide and seal the airflow, improving the stability of the airflow from the air knife, reducing airflow dispersion, and ensuring the largest possible airflow and more precise airflow sprays onto the ton bag 200.

[0063] The wind shield 60 can be elongated, with its extension length not less than that of the air knife, so that it can cover the outer periphery of the air knife. For a specific embodiment, please refer to... Figure 9 The outer periphery of the windshield 60 can be hexahedral. The windshield 60 includes an air outlet baffle 6001, side baffles 6002, top baffle 6003, and bottom baffle 6004. There are two side baffles 6002, which are connected to opposite ends of the air outlet baffle 6001. The two side baffles 6002 are arranged opposite each other along the width direction Y of the mounting wall 11. The top baffle 6003 and the bottom baffle 6004 are both connected to the air outlet baffle 6001, and they are arranged opposite each other along the height direction X of the mounting wall 11. There are no other baffles to form an opening in the opposite direction of the air outlet baffle 6001, and the air knife can be inserted into the space enclosed by the windshield 60 through the opening. An air shower nozzle 61 is provided on the air outlet baffle 6001. The air outlets of the first air knife 30 and / or the second air knife 40 face the air outlet baffle 6001, and the air outlets of the air knives are connected to the air shower nozzle 61, and air is blown outward through the air shower nozzle 61. A pipe opening is provided on the side baffle 6002, and a gas pipe extends into the air baffle shell 60 through the pipe opening to connect to the air knife.

[0064] The wind deflector 60 is disposed on the side of the mounting wall 11 facing the ton bag 200, specifically, the air outlet baffle 6001 faces the ton bag 200. In a specific embodiment, the wind deflector 60 and the mounting wall 11 are configured such that the air outlet baffle 6001 protrudes from the mounting wall 11. This method allows the wind deflector 60 to be suspended from the wall surface of the mounting wall 11, eliminating the need for additional openings on the mounting wall 11 to accommodate the wind deflector 60. Only hooks or other fixing parts are needed on the mounting wall 11 to secure the wind deflector 60, ensuring the integrity of the mounting wall 11. Alternatively, the air outlet baffle 6001 can protrude from the mounting wall 11 in another configuration, where the wind deflector 60 is snapped onto the mounting wall 11, with an opening on the mounting wall 11 that fits the wind deflector 60, through which the wind deflector 60 is inserted and snapped into place. The air outlet baffle 6001 protrudes from the mounting wall 11, making the air outlet of the air knife closer to the ton bag 200, which can reduce the problem of air force dispersion or weakening during the air shower process, and the air shower effect is better.

[0065] In other embodiments, the wind deflector 60 and the mounting wall 11 are configured such that the air outlet baffle 6001 does not protrude from the mounting wall 11. Specifically, the air outlet baffle 6001 not protruding from the mounting wall 11 can be parallel and aligned with the mounting plate along the height direction X, so that the surface of the mounting wall 11 is nearly a complete plane, without any protruding or recessed parts due to the wind deflector 60. This prevents dust from accumulating in the gaps of protruding or recessed parts, reducing cleaning difficulties. Simultaneously, the air outlet baffle 6001 not protruding from the mounting wall 11 allows the gas pipeline to be located on the side of the mounting wall 11 facing away from the ton bag 200, ensuring the pipeline's safety by preventing exposure. Furthermore, the air outlet baffle 6001 not protruding from the mounting wall 11 does not interfere with the ton bag 200; even if the ton bag 200 is too large, the wind deflector 60 will not obstruct the lifting lines of the ton bag 200.

[0066] In one implementation method, please refer to Figure 8 The invention comprises multiple wind deflectors 60, the number of which is the same as the sum of the numbers of the first air blades 30 and the second air blades 40. Each wind deflector 60 is positioned one-to-one around the outer periphery of the first air blades 30 and the second air blades 40. In a specific embodiment, the sum of the numbers of the first air blades 30 and the second air blades 40 can be four, and therefore the number of wind deflectors 60 can also be four, with each of the four wind deflectors 60 corresponding to the outer periphery of the four first air blades 30 and the second air blades 40. By setting multiple wind deflectors 60 in a one-to-one correspondence with the number of air blades, this invention avoids mutual interference between the air blades and improves the efficiency of airflow from the air blades.

[0067] In one implementation method, please refer to Figure 9 and 10The wind deflector 60 is installed around the outer periphery of the first air blade 30. The wind deflector 60 includes a wind deflector 62, which is housed inside the wind deflector 60. The wind deflector 62 divides the internal space of the wind deflector 60 into a first space 601 and a second space 602. The wind deflector 62 has a slot 603 that connects the first space 601 and the second space 602. The first space 601 is connected to a ventilation air shower 61. The first air blade 30 extends from the second space 602 into the first space 601, and the first air blade 30 abuts against the wind deflector 62. This invention, by incorporating a wind deflector 62 within a wind deflector housing 60, divides the internal space of the wind deflector housing 60 into two spaces. This compresses the airflow from the air knife into the first space 601, reducing gas dispersion. The gas in the first space 601 can also flow outwards in the direction of the air knife's outlet, thus concentrating the airflow and increasing the blowing efficiency. Furthermore, the wind deflector housing 60 can form a stable airflow path, preventing frequent changes in air pressure within the wind deflector housing that could generate noise. The wind deflector can also... Figure 12 The design avoids direct airflow impact on the inner wall of the windshield, further reducing wind noise.

[0068] In a specific embodiment, please refer to Figure 10 The wind deflector 62 can be plate-shaped and can be spaced apart from the air outlet baffle 6001 described above, thereby dividing the internal space of the windproof shell 60 into a first space 601 and a second space 602. The wind deflector 62 has a slot 603 for the first air blade 30, which is engaged with the slot 603, and the air outlet of the first air blade 30 is housed in the first space 601. Optionally, the volume of the first space 601 is smaller than the volume of the second space 602. Of course, in specific embodiments, the structure of the wind deflector 62 located outside the second air blade 40 is the same as described above, and will not be repeated here.

[0069] In one implementation method, please refer to Figure 12 The feeding unit 100 also includes a sealing element 63, which is disposed on the bayonet 603. The first air knife 30 abuts against the wind deflector 62 through the sealing element 63; or, the sealing element 63 is disposed on the outer periphery of the air shower opening 61, and the outer periphery of the air outlet of the first air knife 30 abuts against the outer peripheral wall of the air shower opening 61 through the sealing element 63. By providing the sealing element 63, the present invention can improve the sealing performance between the air knife and the wind deflector, reduce gaps, and prevent the airflow blown out by the air knife from dissipating through the gaps.

[0070] The sealing element 63 is made of a soft material and can be arranged around the bayonet 603 or around the air shower opening 61. In a specific embodiment, the sealing element 63 is an annular sealing ring, which is disposed on the edge of the bayonet 603. When the first air knife 30 is engaged with the bayonet 603, the first air knife 30 is in close contact with the sealing element 63. In other embodiments, the sealing element 63 is disposed on the edge of the air shower opening 61.

[0071] In one implementation method, please refer to Figure 12 A wind deflector 60 is disposed around the outer periphery of the first air knife 30. The wind deflector 60 includes a first guide member 64, which is housed inside the wind deflector 60. The first guide member 64 includes a first guide surface 641 and a second guide surface 642, which are spaced apart from each other. The air outlet of the first air knife 30 is located between the first guide surface 641 and the second guide surface 642, forming a non-zero angle. This invention also allows the airflow from the air knife to be guided by the first guide surface 641 and the second guide surface 642 formed by the first guide member 64, thereby improving the efficiency of the airflow from the air shower opening 61 and preventing the airflow from the air knife from being blocked and dispersed by the air outlet baffle 6001. In a specific embodiment, the first guide member 64 can be combined with the wind deflector 62 into one unit.

[0072] The first guide member 64 is used to guide as much of the air blown out of the first air knife 30 as possible out of the windproof shell 60. In a specific embodiment, the first guide member 64 includes a first guide block 6401 and a second guide block 6402, which are arranged at intervals relative to each other. The first guide block 6401 includes the first guide surface 641 mentioned above, and the second guide block 6402 includes the second guide surface 642 mentioned above. Both the first guide block 6401 and the second guide block 6402 are connected to the inner wall of the windproof shell 60, and the extending directions of the first guide block 6401 and the second guide block 6402 are the same as the extending direction of the first air knife 30. The first guide block 6401 and the second guide block 6402 are disposed in the first space 601 described above, and the first guide block 6401 is connected to the air outlet baffle 6001 and the top baffle 6003, and the second guide block 6402 is connected to the air outlet baffle 6001 and the bottom baffle 6004.

[0073] Both the first guide surface 641 and the second guide surface 642 are inclined surfaces relative to the air outlet direction of the first air knife 30. In a specific embodiment, the first air knife 30 includes an upper inclined surface 301 and a lower inclined surface 302, and the air outlet of the first air knife 30 is located between the upper inclined surface 301 and the lower inclined surface 302. The first guide surface 641 faces the upper inclined surface 301, and the second guide surface 642 faces the lower inclined surface 302. The included angle β formed between the first guide surface 641 and the second guide surface 642 ranges from 0° to 90°.

[0074] In one implementation method, please refer to Figure 12 The wind shield 60 includes a second guide member 65, which is disposed at the air shower opening 61 and is movably connected to the wall of the air shower opening 61. In a specific embodiment, the second guide member 65 is rotatably connected to the wall of the air shower opening 61, and can rotate to any angle and then hover. By providing the second guide member 65 at the air shower opening 61, this invention can further guide the airflow blown out by the air knife, so that the airflow blows onto the ton bag 200 as much as possible, avoiding gas dispersion. In addition, the rotatable nature of the second guide member 65 allows the air knife to blow the ton bag 200 upwards or downwards.

[0075] In one implementation method, please refer to Figure 13 The mounting wall 11 has a first air shower opening 611 and a second air shower opening 612. A first air knife 30 and a second air knife 40 are disposed on the side of the mounting wall 11 facing away from the ton bag 200. The air outlet of the first air knife 30 is connected to the first air shower opening 611, and the air outlet of the second air knife 40 is connected to the second air shower opening 612. In a specific embodiment, the feeding unit 100 may not have a baffle shell 60. Both the first air knife 30 and the second air knife 40 are installed on the side of the mounting wall 11 facing away from the ton bag 200. The mounting wall 11 has a first air shower opening 611 and a second air shower opening 612, and the first air knife 30 and the second air knife 40 blow air outward through the first air shower opening 611 and the second air shower opening 612. In a specific embodiment, multiple wind shields 60 are respectively disposed on the first mounting wall 111 and the second mounting wall 112, while no wind shields 60 are disposed on the third mounting wall 113 and the fourth mounting wall 114, and a first air shower opening 611 and a second air shower opening 612 are provided on both the third mounting wall 113 and the fourth mounting wall 114.

[0076] In one embodiment, the feeding unit 100 further includes a detector electrically connected to a controller. The detector is used to detect the height of the ton bag 200, and the controller controls the first air knife 30 and the second air knife 40 to blow air onto the ton bag 200 respectively based on the detection result of the detector. The detector can be installed inside the receiving chamber 10, and the detector may include resistive sensors, laser sensors, photosensors, vision sensors, displacement sensors, ultrasonic distance sensors, 24GHz radar sensors, etc. In a specific embodiment, the detector is used to detect the height of the ton bag 200, i.e., the height Hs provided in the above embodiment.

[0077] The present invention also provides a control method for a feeding unit, which is applied in the feeding unit provided in the above embodiments. Please refer to [reference needed]. Figure 14 .

[0078] In one embodiment, the control method for the feeding unit specifically includes the following steps:

[0079] Step S100: Control the lifting device to lift the ton bag.

[0080] Step S200: Control the first and second air knives to blow air onto the ton bag according to the height of the ton bag relative to the bottom wall.

[0081] Specifically, when the height of the ton bag relative to the bottom wall is lower than the installation height of the second air knife relative to the bottom wall, the second air knife is activated to blow air onto the top surface of the ton bag; when the height of the ton bag relative to the bottom wall is higher than the installation height of the first air knife relative to the bottom wall, the first air knife is activated to blow air onto the bottom surface of the ton bag.

[0082] In a specific embodiment, the first air knife is installed at a height H1 relative to the bottom wall, and the second air knife is installed at a height H2 relative to the bottom wall, where H1 > H2. After the ton bag enters the receiving compartment and is placed on the lifting device, the height Hs of the ton bag is equal to the distance Ht between the lifting device platform and the bottom wall plus the height Hd of the ton bag itself, i.e., Hs = Ht + Hd. At this time, Hs < H2. Therefore, the second air knife is activated to blow air onto the top surface of the ton bag, while the first air knife stops blowing air first.

[0083] The control method for the feeding unit provided by this invention is mainly used to control the first and second air knives to spray the ton bag. The start and stop of the first and second air knives are controlled according to the height of the ton bag relative to the bottom wall, which can improve the spraying efficiency and achieve a comprehensive cleaning effect. Moreover, precise control of the first and second air knives can also reduce the energy consumption of the feeding unit and reduce the situation where the first or second air knives do useless work.

[0084] In one embodiment, controlling the first and second air knives to blow air onto the ton bag based on the height of the ton bag relative to the bottom wall further includes: when the height of the ton bag relative to the bottom wall is higher than the installation height of the first air knife relative to the bottom wall; keeping the first and second air knives in operation; or keeping the first air knife in operation and stopping the second air knife.

[0085] When the height of the ton bag relative to the bottom wall is higher than the installation height of the first air knife relative to the bottom wall, i.e., Hs > H1, the control of the first air knife and the second air knife can include two situations: either the first air knife alone maintains airflow, or both the first air knife and the second air knife maintain airflow.

[0086] In a specific embodiment, the first air knife can maintain airflow independently when the ton bag exceeds the height of the first air knife (i.e., Ht > H1). Since the entire ton bag exceeds the installation height of the second air knife, the second air knife can no longer blow air onto the ton bag, so the second air knife can be stopped. Alternatively, both the first and second air knives can maintain airflow. The first air knife can spray air onto the bottom surface of the ton bag, and the second air knife can spray air onto the bottom wall of the containment chamber, reducing dust accumulation.

[0087] In one embodiment, there are multiple first air knives, and maintaining the operation of the first air knives includes: sequentially activating the multiple first air knives along the height direction of the ton bag; or, intermittently alternatingly activating the multiple first air knives. The control methods for the multiple first air knives include at least two types: sequential activation and alternating activation. It should be noted that sequential activation means that the multiple first air knives are activated sequentially along the height direction (from top to bottom or from bottom to top), while alternating activation means that the multiple first air knives are not activated in height order, and after one first air knives is activated, another first air knives can be stopped.

[0088] In a specific embodiment, the sequential activation of multiple first air knives along the height of the ton bag specifically includes activating the multiple first air knives sequentially from bottom to top and deactivating them sequentially from bottom to top. The reason for activating them sequentially from bottom to top is that, as the ton bag is lifted upwards, the bottom surface of the ton bag passes the lowest first air knife first, and then the other first air knives in sequence; therefore, the lowest first air knife can be activated first. Similarly, the reason for deactivating them sequentially from bottom to top is that the distance between the lower-positioned first air knives and the ton bag increases, reducing the blowing effect, and therefore they can be deactivated preferentially.

[0089] In a specific embodiment, the intermittent alternating activation of multiple first air knives includes the following sequence: the first air knife with the lowest installation position is activated and then stopped first; then the first air knife with the second lowest installation position is activated and then stopped second; then the first air knife with the second highest installation position is activated and then stopped third. After all the first air knives have been activated once, the first air knives can be activated and stopped multiple times in the above sequence to spray the ton bag.

[0090] In one embodiment, there are multiple second air knives, and maintaining the operation of the second air knives includes: sequentially activating multiple second air knives along the height direction of the ton bag; or, intermittently alternatingly activating multiple second air knives. The control method of the second air knives can refer to the first air knives described above, and will not be repeated here.

[0091] In one embodiment, controlling the first and second air knives to blow air onto the ton bag based on the height of the ton bag relative to the bottom wall further includes:

[0092] When the height of the ton bag relative to the bottom wall is lower than the installation height of the first air knife relative to the bottom wall, rotate the first air knife and / or the second air knife to adjust the air outlet direction of the first air knife to have an angle α1 with the installation wall, and adjust the air outlet direction of the second air knife to have an angle α2 with the installation wall.

[0093] When the height of the ton bag relative to the bottom wall is higher than the installation height of the first air knife relative to the bottom wall, rotate the first air knife and / or the second air knife to adjust the air outlet direction of the first air knife to have an angle α3 with the installation wall, and adjust the air outlet direction of the second air knife to have an angle α4 with the installation wall.

[0094] In a specific embodiment, the first air knife and / or the second air knife are rotatably mounted on the mounting wall. When Hs < H1 and Hs ≥ H2, the controller can control the first air knife to rotate around the first axis, thereby swinging up and down relative to the mounting wall, thus adjusting the angle α1 between the air outlet direction of the first air knife and the mounting wall, thereby blowing a larger area of ​​the top surface of the ton bag. Similarly, the controller can control the second air knife to rotate around the second axis, thereby blowing a larger area of ​​the side surface of the ton bag. Optionally, the angle α1 is 0°~90°, and the angle α2 is 0°~180°.

[0095] In a specific embodiment, when Hs > H1, the controller can control the first air knife to rotate around the first axis, thereby blowing a larger area of ​​the ton bag's side surface. Similarly, the controller can control the second air knife to rotate around the second axis, thereby blowing a larger area of ​​the ton bag's side surface. Optionally, the included angle α3 is 0°~180°, and the included angle α4 is 0°~180°.

[0096] The present invention also provides an automatic unpacking device, which includes the feeding unit provided in the above embodiments, and a control method for the feeding unit provided in the above embodiments for blowing ton bags.

[0097] The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A feeding unit (100), characterized in that, include: A receiving compartment (10) for receiving a ton bag (200), the receiving compartment (10) includes a mounting wall (11) and a bottom wall (12), the mounting wall (11) being a side wall of the receiving compartment (10); A lifting device (20) is housed in the receiving compartment (10) and is used to lift the ton bag (200). The first air knife (30) and the second air knife (40) are arranged at intervals on the mounting wall (11) along the height direction (X) of the receiving chamber (10), and the mounting height of the first air knife (30) relative to the bottom wall (12) is higher than the mounting height of the second air knife (40) relative to the bottom wall (12). A controller is used to control the first air knife (30) and the second air knife (40) to blow air onto the ton bag (200) according to the height of the ton bag (200) relative to the bottom wall (12); The air outlet direction of the first air knife (30) forms an angle with the mounting wall (11). Along the height direction (X) of the receiving chamber (10), the first air knife (30) blows air from bottom to top onto the ton bag (200), and the second air knife (40) blows air from top to bottom onto the ton bag (200); the air outlet directions of the first air knife (30) and the second air knife (40) do not intersect. The first air knife (30) and / or the second air knife (40) are rotatably mounted on the mounting wall (11); the first air knife (30) rotates about a first axis (P1), and the second air knife (40) rotates about a second axis (P2), wherein the first axis (P1) is a straight line parallel to the extension direction of the first air knife (30), and the second axis (P2) is a straight line parallel to the extension direction of the second air knife (40); The controller controls the rotation angle of the first air knife (30) and the second air knife (40) so that the first air knife (30) and the second air knife (40) can blow on different surfaces of the ton bag (200) according to the height of the ton bag (200); The feeding unit (100) also includes a wind shield (60), which is connected to the mounting wall (11). The wind shield (60) covers the outer periphery of the first air knife (30) and / or the second air knife (40). An air shower port (61) is provided on the wind shield (60), and the air outlet of the first air knife (30) and / or the second air knife (40) is connected to the air shower port (61). The windproof shell (60) includes a second guide (65), which is disposed at the air shower opening (61) and is movably connected to the wall of the air shower opening (61).

2. The feeding unit (100) according to claim 1, characterized in that, The extension direction of the first air knife (30) is parallel to the width direction (Y) of the mounting wall (11), or the extension direction of the first air knife (30) intersects the width direction (Y) of the mounting wall (11), and the second air knife (40) is parallel to the first air knife (30) or has an angle.

3. The feeding unit (100) according to claim 1, characterized in that, The length of the first air knife (30) is A1, the length of the second air knife (40) is A2, the dimension of the ton bag (200) in the length direction of the first air knife (30) is B1, and the dimension of the ton bag (200) in the length direction of the second air knife (40) is B2, satisfying: 0.7≤A1 / B1≤2, 0.7≤A2 / B2≤2.

4. The feeding unit (100) according to claim 1, characterized in that, The number of mounting walls (11) is multiple, and the multiple mounting walls (11) together enclose the receiving space of the receiving chamber (10). At least one of the mounting walls (11) is provided with a first air knife (30) and a second air knife (40). One of the mounting walls (11) has a feed inlet, and the ton bag (200) is used to enter the receiving chamber (10) from the feed inlet.

5. The feeding unit (100) according to claim 1, characterized in that, The windproof shell (60) covers the outer periphery of the first air knife (30). The windproof shell (60) includes a windproof component (62), which is housed inside the windproof shell (60). The windproof component (62) divides the internal space of the windproof shell (60) into a first space (601) and a second space (602). The windproof component (62) has a slot (603) that connects the first space (601) and the second space (602). The first space (601) is connected to the air shower opening (61). The first air knife (30) extends from the second space (602) into the first space (601), and the first air knife (30) abuts against the windproof component (62).

6. The feeding unit (100) according to claim 5, characterized in that, The feeding unit (100) further includes a sealing element (63), which is disposed on the bayonet (603), and the first air knife (30) abuts against the wind baffle (62) through the sealing element (63); or, the sealing element (63) is disposed on the outer periphery of the air shower (61), and the outer periphery of the air outlet of the first air knife (30) abuts against the outer peripheral wall of the air shower (61) through the sealing element (63).

7. The feeding unit (100) according to claim 1, characterized in that, The windshield shell (60) covers the outer periphery of the first air knife (30). The windshield shell (60) includes a first guide member (64), which is housed inside the windshield shell (60). The first guide member (64) includes a first guide surface (641) and a second guide surface (642). The first guide surface (641) and the second guide surface (642) are arranged at intervals relative to each other. The air outlet of the first air knife (30) is located between the first guide surface (641) and the second guide surface (642). The first guide surface (641) and the second guide surface (642) form a non-zero angle.

8. The feeding unit (100) according to claim 1, characterized in that, The mounting wall (11) is provided with a first air shower (611) and a second air shower (612). The first air knife (30) and the second air knife (40) are disposed on the side of the mounting wall (11) facing away from the ton bag (200). The air outlet of the first air knife (30) is connected to the first air shower (611), and the air outlet of the second air knife (40) is connected to the second air shower (612).

9. The feeding unit (100) according to claim 1, characterized in that, The feeding unit (100) also includes a detector, which is electrically connected to the controller. The detector is used to detect the height of the ton bag (200). The controller controls the first air knife (30) and the second air knife (40) to blow air onto the ton bag (200) according to the detection result of the detector.

10. A control method for a feeding unit (100), characterized in that, The feeding unit (100) according to any one of claims 1-9 uses the control method of the feeding unit (100) to feed materials. The feeding unit (100) includes a receiving bin (10), a lifting device (20), a first air knife (30), a second air knife (40) and a controller. The first air knife (30) and the second air knife (40) are arranged at intervals on the mounting wall (11) along the height direction (X) of the receiving bin (10). The control method for the feeding unit (100) includes: Control the lifting device (20) to lift the ton bag (200); The first air knife (30) and the second air knife (40) are controlled to blow air onto the ton bag (200) according to the height of the ton bag (200) relative to the bottom wall; When the height of the ton bag (200) relative to the bottom wall is lower than the installation height of the second air knife (40) relative to the bottom wall, the second air knife (40) is activated to blow air onto the top surface of the ton bag (200); when the height of the ton bag (200) relative to the bottom wall is higher than the installation height of the first air knife (30) relative to the bottom wall, the first air knife (30) is activated to blow air onto the bottom surface of the ton bag (200).

11. The control method for the feeding unit (100) according to claim 10, characterized in that, Controlling the first air knife (30) and the second air knife (40) to blow air onto the ton bag (200) according to the height of the ton bag (200) relative to the bottom wall, further comprising: When the height of the ton bag (200) relative to the bottom wall is higher than the installation height of the first air knife (30) relative to the bottom wall; Keep the first air knife (30) and the second air knife (40) in operation; or, Keep the first air knife (30) working and stop the second air knife (40).

12. An automatic unpacking device, characterized in that, The automatic unpacking equipment includes a feeding unit (100) as described in any one of claims 1-9.

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