Feeding unit, control method thereof and automatic unpacking equipment

Abstract

The invention discloses a feeding unit, a control method of the feeding unit and automatic unpacking equipment, and the feeding unit comprises a containing bin, a jacking device, a first air knife, a second air knife and a controller; wherein the accommodating bin is used for accommodating a ton bag and comprises a mounting wall and a bottom wall; the jacking device is contained in the containing bin and used for jacking the ton bag. The first air knife and the second air knife are arranged on the mounting wall at intervals in the height direction of the containing bin, and the mounting height of the first air knife relative to the bottom wall is higher than that of the second air knife relative to the bottom wall; the controller is used for controlling the first air knife and the second air knife to blow air to the ton bag according to the height of the ton bag relative to the bottom wall. The problem that in the prior art, dust on outer packaging bags is too much in the ton bag disassembling process can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pulping, and in particular to a feeding unit and a control method thereof, and automatic unpacking equipment. Background Art

[0002] When traditional unpacking equipment unpacks ton bags, dust still remains on the outer packaging bags of the ton bags, which causes dust accumulation or dust emission during the transportation and operation of the ton bags in the unpacking equipment. Most of the existing technologies do not consider how to preliminarily clean the ton bags to reduce the dust on the outer surface of the ton bags and reduce the dust accumulation or dust emission during the unpacking operation of the ton bags. Therefore, how to clean the ton bags and reduce the excessive dust on the outer packaging bags during the unpacking process of the ton bags has become the key. Summary of the invention

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

[0004] In a first aspect, the present invention provides a feeding unit, comprising a receiving bin, a lifter, a first wind knife, a second wind knife and a controller; wherein the receiving bin is used to receive ton bags, and the receiving bin comprises a mounting wall and a bottom wall; the lifter is received in the receiving bin, and the lifter is used to lift the ton bag; the first wind knife and the second wind knife are arranged on the mounting wall at intervals along the height direction of the receiving bin, and the mounting height of the first wind knife compared to the bottom wall is higher than the mounting height of the second wind knife compared to the bottom wall; the controller is used to control the first wind knife and the second wind knife to blow air toward the ton bag according to the height of the ton bag compared to the bottom wall.

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

[0006] In one embodiment, the air outlet direction of the first wind knife forms an angle with the mounting wall, and along the height direction of the receiving bin, the first wind knife blows air toward the ton bag from bottom to top, and the second wind knife blows air toward the ton bag from top to bottom.

[0007] In one embodiment, the length of the first wind knife is A1, the length of the second wind knife is A2, the size of the ton bag in the length direction of the first wind knife is B1, and the size of the ton bag in the length direction of the second wind 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 bin, and at least one mounting wall is provided with a first wind knife and a second wind knife; one of the mounting walls is provided with a feed port, and the ton bag is used to enter the receiving bin from the feed port.

[0009] In one embodiment, the feeding unit also includes a windshield shell, which is connected to the mounting wall, and the windshield shell cover is arranged on the outer periphery of the first wind knife and / or the second wind knife, and an air shower port is opened on the windshield shell, and the air outlet of the first wind knife and / or the second wind knife is connected to the air shower port.

[0010] In one embodiment, the windshield shell cover is arranged on the outer periphery of the first wind knife, and the windshield shell includes a windshield member, and the windshield member is accommodated inside the windshield shell, and the windshield member divides the internal space of the windshield shell into a first space and a second space. The windshield member is provided with a bayonet connecting the first space and the second space, the first space is connected to the air shower port, the first wind knife extends into the first space from the second space, and the first wind knife abuts against the windshield member.

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

[0012] In one embodiment, the wind shield cover is arranged on the outer periphery of the first wind blade, the wind shield shell includes a first flow guide member, the first flow guide member is accommodated inside the wind shield shell, the first flow guide member includes a first flow guide surface and a second flow guide surface, the first flow guide surface and the second flow guide surface are arranged relatively spaced apart, the air outlet of the first wind blade is located between the first flow guide surface and the second flow guide surface, and the first flow guide surface and the second flow guide surface form a non-zero angle.

[0013] In one embodiment, the windshield shell includes a second flow guide member, the second flow guide member is arranged at the air shower port, and the second flow guide member is movably connected to the wall surface of the air shower port.

[0014] In one embodiment, a first air shower port and a second air shower port are provided on the mounting wall, the first air knife and the second air knife are arranged on a 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 port, and the air outlet of the second air knife is connected to the second air shower port.

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

[0016] In a second aspect, the present invention provides a control method for a feeding unit, the feeding unit comprising a receiving bin, a lifter, a first wind knife, a second wind knife and a controller, the first wind knife and the second wind knife being arranged on the mounting wall at intervals along the height direction of the receiving bin; the control method for the feeding unit comprises: controlling the lifter to lift a ton bag; controlling the first wind knife and the second wind knife to blow air toward the ton bag according to the height of the ton bag compared to the bottom wall; wherein, when the height of the ton bag compared to the bottom wall is lower than the installation height of the second wind knife compared to the bottom wall, the second wind knife is started to blow air toward the top surface of the ton bag, and when the height of the ton bag compared to the bottom wall is higher than the installation height of the first wind knife compared to the bottom wall, the first wind knife is started to blow air toward the bottom surface of the ton bag.

[0017] In one embodiment, the first wind knife and the second wind knife are controlled to blow air toward the ton bag according to the height of the ton bag compared to the bottom wall, and also includes: when the height of the ton bag compared to the bottom wall is higher than the installation height of the first wind knife compared to the bottom wall; keep the first wind knife and the second wind knife working; or, keep the first wind knife working and stop the second wind knife.

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

[0019] The feeding unit provided by the present invention is applied to automatic unpacking equipment, mainly to perform air-shower cleaning on the ton bags before they are disassembled; by setting up a storage bin, the air-showering process of the ton bags can be kept in an independent and closed environment, and the dust generated during the air-showering process will not float away, which is convenient for centralized treatment in the storage bin, and the air flow stability of the air-showering in the storage bin is relatively high, and the air-showering cleaning effect is better; by setting up a jack, on the one hand, it is used to transfer the ton bag to a lower unit for post-processing, and on the other hand, the jack lifts the ton bag to move, so that all sides of the ton bag can be cleaned more comprehensively, avoiding the situation where only partial air-showering cleaning is possible; by setting up a first air knife and a second air knife, and using a controller to control the first air knife and the second air knife, not only the air-showering efficiency is improved, but also the intelligence of the air-showering of the ton bag can be improved, and the first air knife and the second air knife are arranged at intervals along the height direction of the storage bin, which can also perform comprehensive air-showering on the sides and top surface of the ton bag, thereby reducing the dust contaminated on the outside of the packaging bag during the unpacking process of the ton bag and reducing the impact of flying dust on the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 is an appearance diagram of an automatic unpacking device in an embodiment;

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

[0023] Figure 3 is a schematic diagram of a ton bag placed on a jacking device in an embodiment;

[0024] Figure 4 The diagram is a schematic diagram of a first air knife and a second air knife showering a ton bag in one embodiment;

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

[0026] Figure 6 The figure is a schematic diagram of the ratio of the first air knife and the second air knife to the size of the ton bag in one embodiment;

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

[0028] Figure 8 is an appearance diagram of a wind shield and a wind knife in one embodiment;

[0029] Fig. 9 is a schematic cross-sectional view of a wind shield and a first wind knife in one embodiment;

[0030] Fig.10 is a cross-sectional schematic diagram of a windshield including a windshield member and a sealing member in an embodiment;

[0031] Fig.11 is a cross-sectional schematic diagram of a windshield including a windshield member and a sealing member in another embodiment;

[0032] Fig.12 is a cross-sectional schematic diagram of a windshield including a first flow guide and a second flow guide in an embodiment;

[0033] Fig.13 is an appearance diagram of an automatic unpacking device in an embodiment from another perspective;

[0034] Fig.14 The present invention is a flow chart of a control method of a feeding unit in one embodiment.

[0035] Description of reference numerals:

[0036] 100-feeding unit, 10-receiving bin, 11-installation wall, 111-first installation wall, 112-second installation wall, 113-third installation wall, 114-fourth installation wall, 12-bottom wall, 20-lifter, 30-first wind knife, 301-upper slope, 302-lower slope, 40-second wind knife, 60-wind shield, 6001-air outlet baffle, 6002-side baffle, 6003-top baffle, 6004-bottom baffle, 601-first space, 602-second space, 603-bayonet, 61-air shower port, 611-first air shower port, 612-second air shower port, 62-wind shield, 63-sealing member, 64-first flow guide member, 6401-first flow guide block, 6402-second flow guide block, 641-first flow guide surface, 642-second flow guide surface, 65-second flow guide member; 200-ton bag, X-height direction, Y-width direction, Z-thickness direction, P1-first axis, P2-second axis. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It is understood that the terms in the specification and claims of the present invention and the above-mentioned drawings are only for describing specific embodiments and are not intended to limit the present invention. The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. Unless the context clearly states otherwise, the singular forms "one" and "" are also intended to include plural forms. The term "including" and any of their variations are intended to cover non-exclusive inclusions. In addition, the present invention can be implemented in a variety of different forms and is not limited to the embodiments described in this embodiment. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of the present invention, in which the words indicating the orientation such as upper, lower, left, right, etc. are only for the position of the structure shown in the corresponding drawings. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set on..." should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The term "and / or" used in the present invention refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0039] The following description is a preferred embodiment of the present invention, but the above description is for the purpose of illustrating the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

[0040] The present invention provides a feeding unit 100, which is installed in an automatic unpacking device. Figure 1-Figure 14 .

[0041] In one implementation, please refer to Figure 1-Figure 3 The feeding unit 100 includes a receiving bin 10, a lifter 20, a first air knife 30, a second air knife 40 and a controller; wherein the receiving bin 10 is used to receive ton bags 200, and the receiving bin 10 includes a mounting wall 11 and a bottom wall 12; the lifter 20 is received in the receiving bin 10, and the lifter 20 is used to lift the ton bag 200; the first air knife 30 and the second air knife 40 are arranged on the mounting wall 11 at intervals along the height direction X of the receiving bin 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; the controller is used to control the first air knife 30 and the second air knife 40 to blow air to 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 storage bin 10 is in the shape of a cube. The inner wall space of the storage bin 10 is enclosed by the bottom wall 12 and the mounting wall 11. The mounting wall 11 is also the side wall of the storage bin 10, so the number of mounting walls 11 of the storage bin 10 can be four. In a specific embodiment, one of the mounting walls 11 can be used as a door for feeding (ton bags 200), that is, the ton bags 200 enter the storage bin 10 from the side of the storage bin 10. In a specific embodiment, the feeding unit 100 can be placed directly on the ground, so the bottom wall 12 of the storage bin 10 can be connected to the ground; or, the feeding unit 100 can be placed on a workbench, and the bottom wall 12 of the storage bin 10 can be connected to the table top of the workbench.

[0043] The jacking device 20 is received in the receiving bin 10. Specifically, the jacking device 20 can be installed on the bottom wall 12. The jacking device 20 can rise or fall along the height direction X of the receiving bin 10. It should be noted that the height direction X of the receiving bin 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 wind knife 30 and the second wind knife 40 are both mounted on the same mounting wall 11. Figure 2 , along the height direction X of the storage bin 10, the installation height of the first wind knife 30 relative to the bottom wall 12 is higher than the installation height of the second wind knife 40 relative to the bottom wall 12, and the first wind knife 30 and the second wind knife 40 are arranged at intervals. In a specific embodiment, the first wind knife 30 and the second wind knife 40 can extend or extend obliquely along the width direction Y of the installation wall 11. It should be noted that the width direction Y of the installation wall 11 is perpendicular to the height direction X mentioned above, and the installation wall 11 can be a rectangle, so the height direction X mentioned above is the long side direction of the installation wall 11, and the width direction Y mentioned above is the wide side direction of the installation wall 11.

[0045] The controller is arranged inside or outside the storage bin 10, and the controller may include a smart chip or a smart terminal (such as a computer, a mobile phone, a PDA, a wearable device, etc.). The controller may be a device with information collection, processing and connection capabilities, and may realize functions such as intelligent perception, interaction, and big data services. In a specific embodiment, the controller has the ability to control the start and stop of the first wind knife 30 and the second wind knife 40, or the ability to control the first wind knife 30 and the second wind knife 40 to change the air volume; the controller also has the ability to receive information about the height of the ton bag 200, and the controller can control the first wind knife 30 and the second wind knife 40 according to the height information of the ton bag 200.

[0046] It should be noted that the height of the above-mentioned middle bag 200 refers to the height of the bag 200 compared to the bottom wall 12 after being lifted by the lifter 20. For example, please refer to Figure 3 When the jacking device 20 is not started and returns to the lowest point, the initial distance between the table top of the jacking device 20 and the bottom wall 12 is 10 (unit is not limited). After the ton bag 200 enters the storage bin 10 and is placed on the jacking device 20, the height Hs of the ton bag 200 is equal to the distance Ht between the table top of the jacking 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 wind knife 30 and the second wind knife 40 according to the size of Hs.

[0047] The feeding unit 100 provided by the present invention is applied to the automatic unpacking equipment, mainly to perform air-shower cleaning on the ton bag 200 before the ton bag 200 is disassembled; by setting the receiving bin 10, the air-showering link of the ton bag 200 can be kept in an independent and closed environment, and the dust generated during the air-showering process will not float away, which is convenient for centralized treatment in the receiving bin 10, and the air flow stability of the air-showering in the receiving bin 10 is relatively high, and the air-showering cleaning effect is better; by setting the jacking device 20, on the one hand, it is used to transfer the ton bag 200 to the lower unit for post-processing, and on the other hand, the jacking device 20 lifts the ton bag 20 0 movement, so that all surfaces of the ton bag 200 can be cleaned more comprehensively, avoiding the situation where only partial blowing and cleaning can be performed; by setting the first air knife 30 and the second air knife 40, and using the controller to control the first air knife 30 and the second air knife 40, not only the blowing efficiency is improved, but also the intelligence of the blowing ton bag 200 can be improved. The first air knife 30 and the second air knife 40 are arranged at intervals X along the height direction of the receiving bin 10, which can also comprehensively blow the side and top surface of the ton bag 200, thereby reducing the dust on the outside of the packaging bag of the ton bag 200 during the unpacking process and reducing the impact of flying dust on the machine.

[0048] In one implementation, please refer to Figure 2, the extension direction of the first wind knife 30 is parallel to the width direction Y of the installation wall 11, or the extension direction of the first wind knife 30 intersects with the width direction Y of the installation wall 11, and the second wind knife 40 is parallel to or has an angle with the first wind knife 30. In a specific embodiment, the first wind knife 30 and the second wind knife 40 are both long strips, and the extension direction of the first wind knife 30 is parallel to the width direction Y of the installation wall 11, so that the first wind knife 30 can blow out wind parallel to the width direction Y of the installation wall 11, and the second wind knife 40 can be parallel to the first wind knife 30. In other embodiments, the first wind knife 30 can be installed obliquely on the installation wall 11, and the second wind knife 40 can be parallel to the first wind knife 30. In other embodiments, the extension direction of the first wind knife 30 is parallel to the width direction Y of the installation wall 11, and the second wind knife 40 can be installed obliquely on the installation wall 11. The present invention can ensure that the combination of the first air knife 30 and the second air knife 40 can cover a wider shower range by setting the extension direction of the first air knife 30 and the second air knife 40 and the setting angles thereof, thereby further improving the shower effect.

[0049] In one implementation, please refer to Figure 4 , the air outlet direction of the first wind knife 30 has an angle with the mounting wall 11, and along the height direction X of the storage bin 10, the first wind knife 30 blows air from bottom to top toward the ton bag 200, and the second wind knife 40 blows air from top to bottom toward the ton bag 200. It should be noted that the structure of the wind knife (including the first wind knife 30 and the second wind knife 40) mainly has an air cavity inside it, and the external airflow enters the air cavity; an air outlet is opened on the side of the wind knife (the thinner position), and the air outlet is connected to the air cavity, and the air outlet extends along the length direction of the wind knife. The air outlet direction of the first wind knife 30 is the direction of the line connecting its air outlet with its back side, such as Figure 4 Shown by the dashed line.

[0050] In a specific embodiment, the air outlet direction and the installation wall 11 have an angle α, and the angle α is 0° to 90°, so that the first air knife 30 blows air from bottom to top to the ton bag 200, and the second air knife 40 blows air from top to bottom to the ton bag 200. When the height of the ton bag 200 is lower than the second air knife 40, the top surface of the ton bag 200 is located below the second air knife 40, and the second air knife 40 can blow air to the top surface of the ton bag 200. Therefore, in the process of the ton bag 200 rising, 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 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 faces the side of the ton bag 200. The present invention sets the first air knife 30 and the second air knife 40 to have an angle with the installation wall 11, so that the second air knife 40 installed at a lower position can blow air from top to bottom to the ton bag 200, which can not only blow the side of the ton bag 200, but also blow the top surface of the ton bag 200 to reduce the dust on the top of the ton bag 200. In addition, the first air knife 30 can also blow the bottom surface of the ton bag when blowing upwards, reducing the dust at the bottom of the ton bag 200. The air outlet directions of the first air knife 30 and the second air knife 40 do not intersect, so the airflows of the two will not interfere with each other, ensuring the stability of the air shower.

[0051] In one implementation, please refer to Figure 4 , the first wind knife 30 and / or the second wind knife 40 are rotatably mounted on the mounting wall 11. Specifically, the first wind knife 30 can rotate around the first axis P1, and the second wind knife 40 can rotate around the second axis P2, wherein the first axis P1 is a straight line parallel to the extension direction of the first wind knife 30, and the second axis P2 is a straight line parallel to the extension direction of the second wind knife 40. In a specific embodiment, the first wind knife 30 and the second wind knife 40 are both parallel to the width direction Y of the mounting wall 11. The first wind knife 30 rotates around the first axis P1 parallel to the width direction Y, thereby realizing up and down swinging relative to the mounting wall 11, that is, the first wind knife 30 can blow air from top to bottom to the ton bag 200, or from bottom to top to the ton bag 200, or horizontally to the ton bag 200. Of course, the second wind knife 40 rotating around the second axis P2 parallel to the width direction Y can also achieve the above function. The controller controls the first wind knife 30 and / or the second wind knife 40 to rotate and blow air toward the ton bag 200 according to the height of the ton bag 200 compared to the bottom wall 12. The present invention sets the first wind knife 30 and the second wind knife 40 to be rotatable, and the controller controls the rotation angle of the first wind knife 30 and the second wind knife 40, so that the first wind knife 30 and the second wind knife 40 can blow different surfaces of the ton bag 200 according to the height of the ton bag 200.

[0052] In one implementation, please refer to Figure 5, the number of the first wind knives 30 is multiple, and the multiple first wind knives 30 are arranged at intervals along the height direction X of the receiving bin 10, and the multiple first wind knives 30 are parallel or at least two first wind knives 30 have an angle. In a specific embodiment, the number of the first wind knives 30 can be 2 to 5, and the multiple first wind knives 30 are arranged at equal intervals along the height direction X of the receiving bin 10. Optionally, all the first wind knives 30 are parallel to the width direction Y of the installation wall 11; or, at least one first wind knife 30 intersects with the width direction Y of the installation wall 11, that is, it is installed obliquely on the installation wall 11.

[0053] In one implementation, please refer to Figure 5 , the number of the second wind knives 40 is multiple, and the multiple second wind knives 40 are arranged at intervals along the height direction X of the receiving bin 10, and the multiple second wind knives 40 are parallel or at least two second wind knives 40 have an angle. In a specific embodiment, the number of the second wind knives 40 can be 2 to 5, and the multiple second wind knives 40 are arranged at equal intervals along the height direction X of the receiving bin 10. Optionally, all the second wind knives 40 are parallel to the width direction Y of the installation wall 11; or, at least one second wind knife 40 intersects with the width direction Y of the installation wall 11, that is, it is installed obliquely on the installation wall 11.

[0054] In one embodiment, the number of the second air knife 40 is multiple, and the first air knife 30 can be one; or, the number of the first air knife 30 is multiple, and the second air knife 40 can be one. It can be understood that when the height of the ton bag 200 exceeds all the first air knives 30, the first air knife 30 is also mainly used to blow the side of the ton bag 200, and the first air knife 30 performs the same task as the second air knife 40, so the number of the first air knife 30 can be set to one, which can facilitate the control of the controller and reduce costs. The present invention can further improve the blowing efficiency by setting the number of the first air knife 30 and / or the second air knife 40 to be multiple, and can also achieve the effect of facilitating the control of the controller and reducing costs.

[0055] In one implementation, please refer to Figure 6, the length of the first wind knife 30 is A1, the length of the second wind knife 40 is A2, the size of the ton bag 200 in the length direction of the first wind knife 30 is B1, and the size of the ton bag 200 in the length direction of the second wind 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, 2; A2 / B2 can be 0.7, 0.8, 1, 1.2, 1.4, 1.6, 1.8, 2. The present invention controls the size ratio of the first wind knife 30 and the second wind knife 40 to the size of the ton bag 200, so that the first wind knife 30 and the second wind knife 40 can be blown to the side, top and bottom surfaces of the wind knife as much as possible in the width direction Y, thereby improving the cleaning effect.

[0056] In one implementation, please refer to Figure 1 and Figure 7 There are multiple installation walls 11, which together enclose the receiving space of the receiving bin 10. At least one installation wall 11 is provided with a first air knife 30 and a second air knife 40. One of the installation walls 11 is provided with a feed port, and the ton bag 200 is used to enter the receiving bin 10 from the feed port. In a specific embodiment, there are four installation walls 11, and one of the installation walls 11 is also provided as a bin door with a feed port.

[0057] In a specific embodiment, the ton bag 200 enters the storage bin along the thickness direction Z, and after the ton bag 200 is lifted up and hooked by the fishing device, it continues to leave the storage bin in the thickness direction Z. Therefore, the first wind knife 30 and the second wind knife 40 can be set only on the installation wall of the bin door, and one wind knife (the first wind knife 30 or the second wind knife 40) is set on the other three installation walls. This not only ensures that the six sides of the ton bag 200 are blown, but also the side where the first wind knife 30 and the second wind knife 40 are installed can be used to achieve continuous blowing of the ton bag 200.

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

[0059] The plurality of mounting walls 11 respectively 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 shape in sequence; wherein the first mounting wall 111 and the second mounting wall 112 are arranged opposite to each other, and the third mounting wall 113 and the fourth mounting wall 114 are arranged opposite to 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 warehouse door.

[0060] Optionally, in the case where the number of the first wind knife 30 and the second wind knife 40 is one; in a specific embodiment, the first wind knife 30 on the first mounting wall 111 and the first wind knife 30 on the second mounting wall 112 are arranged in parallel and opposite to each other, and the second wind knife 40 on the first mounting wall 111 and the second wind knife 40 on the second mounting wall 112 are arranged in parallel and opposite to each other. In other embodiments, the orthographic projection of the first wind knife 30 on the first mounting wall 111 on the second mounting wall 112 is located between the first wind knife 30 and the second wind knife 40 on the second mounting wall 112, and the orthographic projection of the second wind knife 40 on the first mounting wall 111 on the second mounting wall 112 is located below the second wind knife 40 on the second mounting wall 112.

[0061] Optionally, the number of the first wind knife 30 and the second wind knife 40 are both multiple and the number of the two is the same; in a specific embodiment, the first wind knife 30 on the first installation wall 111 and the first wind knife 30 on the second installation wall 112 are arranged in parallel and opposite to each other, and the second wind knife 40 on the first installation wall 111 and the second wind knife 40 on the second installation wall 112 are arranged in parallel and opposite to each other. In other embodiments, the orthographic projection of the first wind knife 30 on the first installation wall 111 on the second installation wall 112 is located between two adjacent first wind knives 30 on the second installation wall 112, and the orthographic projection of the second wind knife 40 on the first installation wall 111 on the second installation wall 112 is located between two adjacent second wind knives 40 on the second installation wall 112.

[0062] In one embodiment, please refer to Figure 8The feeding unit 100 further includes a windshield shell 60, which is connected to the mounting wall 11. The windshield shell 60 is arranged on the periphery of the first wind knife 30 and / or the second wind knife 40. The windshield shell 60 is provided with an air shower port 61, and the air outlet of the first wind knife 30 and / or the second wind knife 40 is connected with the air shower port 61. The present invention not only avoids the influence of dust on the wind knife by arranging the windshield shell 60 on the periphery of the wind knife, but also protects the wind knife, and avoids the interference of the ton bag 200 with the wind knife due to the excessive volume; at the same time, the windshield shell 60 can also play the role of guiding and sealing, improve the stability of the airflow blown out by the wind knife, reduce the dispersion of the airflow, and ensure the largest possible airflow and more accurate airflow to shower the ton bag 200.

[0063] The shape of the windshield shell 60 can be a long strip, and the extension length of the windshield shell 60 is not less than the extension length of the wind knife, so that it can be covered on the periphery of the wind knife. Fig. 9 The outer peripheral contour of the windshield shell 60 can be a hexahedron. The windshield shell 60 includes an air outlet baffle 6001, side baffles 6002, a top baffle 6003 and a bottom baffle 6004, wherein there are two side baffles 6002, which are connected to the two ends of the air outlet baffle 6001 that are away from each other, and the two side baffles 6002 are relatively arranged along the width direction Y of the installation wall 11; the top baffle 6003 and the bottom baffle 6004 are both connected to the air outlet baffle 6001, and the two are relatively arranged along the height direction X of the installation wall 11; no other baffles are arranged in the direction opposite to the air outlet baffle 6001 to form an opening, and the wind knife can be placed into the space enclosed by the windshield shell 60 from the opening. The air outlet baffle 6001 is provided with an air shower port 61, and the air outlets of the first air knife 30 and / or the second air knife 40 face the air outlet baffle 6001, so that the air outlets of the air knives are connected with the air shower port 61, and air is blown outward through the air shower port 61. The side baffle 6002 is provided with a pipeline port, and the gas pipeline extends into the wind shield shell 60 through the pipeline port to connect with the air knives.

[0064] The windshield shell 60 is arranged on a side of the mounting wall 11 facing the ton bag 200, specifically, the wind baffle 6001 faces the ton bag 200. In a specific embodiment, the arrangement of the windshield shell 60 and the mounting wall 11 includes that the wind baffle 6001 protrudes from the mounting wall 11. Among them, the way that the wind baffle 6001 protrudes from the mounting wall 11 can be that the windshield shell 60 is hung on the wall surface of the mounting wall 11, so that there is no need to open an additional opening on the mounting wall 11 to adapt the windshield shell 60, and only a hook or other fixing parts are provided on the mounting wall 11 to fix the windshield shell 60, thereby ensuring the integrity of the mounting wall 11. In addition, the way that the wind baffle 6001 protrudes from the mounting wall 11 can also be that the windshield shell 60 is clamped on the mounting wall 11, and an opening adapted to the windshield shell 60 is opened on the mounting wall 11, and the windshield shell 60 is passed through the opening and clamped thereby. The air outlet baffle 6001 protrudes from the installation wall 11 so that the air outlet of the wind knife is closer to the ton bag 200, which can reduce the problem of wind dispersion or wind weakening during the air shower process and achieve a better air shower effect.

[0065] In other embodiments, the windshield shell 60 and the mounting wall 11 are arranged in a manner that the air outlet baffle 6001 does not protrude from the mounting wall 11. The manner in which the air outlet baffle 6001 does not protrude from the mounting wall 11 can be that the air outlet baffle 6001 and the mounting plate are parallel and aligned along the height direction X, so that the surface where the mounting wall 11 is located approaches a complete plane, and there is no protruding or recessed part due to the installation of the windshield shell 60, so that dust can be prevented from being deposited in the gap of the protruding or recessed part, reducing the difficulty of cleaning. At the same time, the air outlet baffle 6001 does not protrude from the mounting wall 11, so that the gas pipeline can be arranged on the side of the mounting wall 11 facing away from the ton bag 200, and the gas pipeline will not be exposed to ensure the safety of the pipeline; moreover, the air outlet baffle 6001 does not protrude from the mounting wall 11 and will not interfere with the ton bag 200. In the case where the volume of the ton bag 200 is too large, the windshield shell 60 will not block the lifting line of the ton bag 200.

[0066] In one implementation, please refer to Figure 8 , the number of windshield shells 60 is multiple, the number of windshield shells 60 is the same as the sum of the number of the first wind blades 30 and the second wind blades 40, and the multiple windshield shells 60 are correspondingly arranged on the peripheries of the first wind blades 30 and the second wind blades 40. In a specific embodiment, the sum of the number of the first wind blades 30 and the second wind blades 40 can be four, then the number of windshield shells 60 can also be four, and the four windshield shells 60 are correspondingly arranged on the peripheries of the four first wind blades 30 and the second wind blades 40. The present invention can avoid mutual interference between wind blades and improve the efficiency of wind blade air discharge by setting multiple windshield shells 60 corresponding to the number of wind blades.

[0067] In one implementation, please refer to Fig. 9 and 10The windshield shell 60 is covered on the outer periphery of the first wind knife 30, and the windshield shell 60 includes a windshield member 62, which is accommodated inside the windshield shell 60. The windshield member 62 divides the internal space of the windshield shell 60 into a first space 601 and a second space 602. A bayonet 603 connecting the first space 601 and the second space 602 is provided on the windshield member 62. The first space 601 is connected to the ventilation outlet 61. The first wind knife 30 extends from the second space 602 into the first space 601, and the first wind knife 30 abuts against the windshield member 62. The present invention provides a windshield member 62 in the windshield shell 60, and uses the windshield member 62 to divide the space inside the windshield shell 60 into two, so that the airflow blown out by the wind knife is compressed in the first space 601, and the gas dispersion is reduced. The gas in the first space 601 can also flow outward along the wind direction of the wind knife, so that the airflow is concentrated and the showering efficiency is increased; and the windshield shell 60 can form a stable airflow path to avoid frequent changes in air pressure in the windshield shell to generate noise. The windshield member can also be as follows Fig.12 Setting to prevent airflow from directly impacting the inner wall of the windshield shell, further reducing wind noise.

[0068] In the specific embodiment, please refer to Fig.10 , the wind shield 62 can be in the shape of a plate, and the wind shield 62 can be arranged at a relative interval with the above-mentioned air outlet baffle 6001, so that the wind shield 62 divides the internal space of the wind shield shell 60 into a first space 601 and a second space 602. The wind shield 62 is provided with a bayonet 603 adapted to the first wind knife 30, the first wind knife 30 is snapped on the bayonet 603, and the air outlet of the first wind knife 30 is accommodated 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 a specific embodiment, the structure of the wind shield 62 arranged outside the second wind knife 40 is the same as described above, and will not be repeated here.

[0069] In one implementation, please refer to Fig.12 The feed unit 100 further includes a seal 63, which is disposed on the bayonet 603, and the first air knife 30 abuts against the wind shield 62 through the seal 63; or, the seal 63 is disposed on the periphery of the air shower port 61, and the periphery of the air outlet of the first air knife 30 abuts against the peripheral wall of the air shower port 61 through the seal 63. The present invention can improve the sealing between the air knife and the wind shield, reduce the gap, and prevent the airflow blown out by the air knife from dispersing through the gap by disposing the seal 63.

[0070] The seal 63 is made of a soft material, and the seal 63 can be arranged around the bayonet 603, or the seal 63 can be arranged around the air shower port 61. In a specific embodiment, the seal 63 is an annular sealing ring, and the seal 63 is arranged on the edge of the bayonet 603. When the first air knife 30 is connected to the bayonet 603, the first air knife 30 is tightly attached to the seal 63. In other embodiments, the seal 63 is arranged on the edge of the air shower port 61.

[0071] In one implementation, please refer to Fig.12 The windshield shell 60 is arranged on the outer periphery of the first wind knife 30, and the windshield shell 60 includes a first guide member 64, which is accommodated inside the windshield shell 60, and the first guide member 64 includes a first guide surface 641 and a second guide surface 642, which are arranged at a relative interval, and the air outlet of the first wind knife 30 is located between the first guide surface 641 and the second guide surface 642, and the first guide surface 641 and the second guide surface 642 form a non-zero angle. The present invention also provides the first guide member 64 in the windshield shell 60, and the first guide surface 641 and the second guide surface 642 formed by the first guide member 64 can be used to guide the airflow blown out of the wind knife, thereby improving the efficiency of the airflow blown out from the air shower port 61, so as to prevent the wind blown out of the wind knife from being blocked by the air outlet baffle 6001 and dispersing. In a specific embodiment, the first guide member 64 can be combined with the windshield member 62 into one.

[0072] The first guide member 64 is used to guide as much wind blown out of the first wind knife 30 as possible out of the windshield shell 60. In a specific embodiment, the first guide member 64 includes a first guide block 6401 and a second guide block 6402, the first guide block 6401 and the second guide block 6402 are arranged relatively spaced apart, 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. The first guide block 6401 and the second guide block 6402 are both connected to the inner wall of the windshield shell 60, and the extension direction of the first guide block 6401 and the second guide block 6402 is the same as the extension direction of the first wind knife 30. The first guide block 6401 and the second guide block 6402 are arranged in the first space 601 mentioned above, and the first guide block 6401 connects the air outlet baffle 6001 and the top baffle 6003, and the second guide block 6402 connects the air outlet baffle 6001 and the bottom baffle 6004.

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

[0074] In one implementation, please refer to Fig.12 The windshield shell 60 includes a second guide member 65, which is arranged at the air shower port 61 and is movably connected to the wall of the air shower port 61. In a specific embodiment, the second guide member 65 is rotatably connected to the wall of the air shower port 61, and the second guide member 65 can be rotated to any angle and then suspended. The present invention can further guide the airflow blown out by the wind knife by arranging the second guide member 65 at the air shower port 61, so that the airflow is blown onto the ton bag 200 as much as possible to avoid gas dispersion. In addition, the rotatable manner of the second guide member 65 can realize that the wind knife blows the ton bag 200 upward or downward.

[0075] In one implementation, please refer to Fig.13 , the installation wall 11 is provided with a first air shower port 611 and a second air shower port 612, the first air knife 30 and the second air knife 40 are arranged on the side of the installation 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 port 611, and the air outlet of the second air knife 40 is connected to the second air shower port 612. In a specific embodiment, the windshield 60 may not be provided in the feeding unit 100, the first air knife 30 and the second air knife 40 are both installed on the side of the installation wall 11 facing away from the ton bag 200, the first air shower port 611 and the second air shower port 612 are provided on the installation wall 11, and the first air knife 30 and the second air knife 40 blow air outward through the first air shower port 611 and the second air shower port 612. In a specific embodiment, a plurality of windshield shells 60 are respectively arranged on the first mounting wall 111 and the second mounting wall 112, no windshield shells 60 are arranged on the third mounting wall 113 and the fourth mounting wall 114, and a first air shower port 611 and a second air shower port 612 are opened on the third mounting wall 113 and the fourth mounting wall 114.

[0076] In one embodiment, the feed unit 100 further includes a detector, the detector is electrically connected to the controller, the detection element 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 to the ton bag 200 respectively according to the detection result of the detector. The detector can be arranged in the storage bin 10, and the detector can include a resistive sensor, a laser sensor, a photosensitive sensor, a visual sensor, a displacement sensor, an ultrasonic distance sensor, a 24GHz radar sensor, etc. In a specific embodiment, the detector is used to detect the height of the ton bag 200, that is, the height Hs provided in the above embodiment.

[0077] The present invention also provides a control method for a material unit, which is applied to the feed unit provided in the above embodiment, please refer to Fig.14 .

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

[0079] Step S100, controlling the jacking device to lift the ton bag.

[0080] Step S200, controlling the first wind knife and the second wind knife to blow air toward the ton bag according to the height of the ton bag compared to the bottom wall.

[0081] Among them, when the height of the ton bag compared to the bottom wall is lower than the installation height of the second wind knife compared to the bottom wall, the second wind knife is started to blow air toward the top surface of the ton bag; when the height of the ton bag compared to the bottom wall is higher than the installation height of the first wind knife compared to the bottom wall, the first wind knife is started to blow air toward the bottom surface of the ton bag.

[0082] In a specific embodiment, the installation height of the first wind knife relative to the bottom wall is H1, and the installation height of the second wind knife relative to the bottom wall is H2, and H1>H2. After the ton bag enters the storage bin and is placed on the jack, the height Hs of the ton bag is equal to the distance Ht between the jack table and the bottom wall plus the height Hd of the ton bag itself, that is, Hs=Ht+Hd, and at this time Hs<H2. Therefore, the second wind knife is started to blow air to the top surface of the ton bag, and the first wind knife stops blowing air first.

[0083] The control method of the feeding unit provided by the present invention is mainly used to control the first air knife and the second air knife to blow and shower the ton bag. The start and stop of the first air knife and the second air knife are controlled according to the height of the ton bag compared to the bottom wall, which can improve the blowing efficiency and achieve a comprehensive cleaning effect; moreover, precise control of the first air knife and the second air knife can also reduce the energy consumption of the feeding unit and reduce the situation where the first air knife or the second air knife does useless work.

[0084] In one embodiment, the first wind knife and the second wind knife are controlled to blow air toward the ton bag according to the height of the ton bag compared to the bottom wall, and also includes: when the height of the ton bag compared to the bottom wall is higher than the installation height of the first wind knife compared to the bottom wall; keeping the first wind knife and the second wind knife working; or, keeping the first wind knife working and stopping the second wind knife.

[0085] Among them, when the height of the ton bag compared to the bottom wall is higher than the installation height of the first wind knife compared to the bottom wall, that is, Hs>H1, the control conditions of the first wind knife and the second wind knife can include two types, namely, the first wind knife alone keeps blowing, or both the first wind knife and the second wind knife keep blowing.

[0086] In a specific embodiment, the first wind knife alone can keep blowing air, when the ton bag exceeds the first wind knife, that is, when Ht>H1, the second wind knife can no longer blow air to the ton bag because the ton bag as a whole exceeds the installation height of the second wind knife, so the second wind knife can be stopped. Alternatively, both the first wind knife and the second wind knife keep blowing air, the first wind knife can blow the bottom surface of the ton bag, and the second wind knife can blow the bottom wall of the storage bin to reduce dust accumulation.

[0087] In one embodiment, there are multiple first air knives, and keeping the first air knives working includes: starting multiple first air knives in sequence along the height direction of the ton bag; or, starting multiple first air knives intermittently and alternately. There are at least two control methods for multiple first air knives, namely starting in sequence and starting alternately. It should be noted that starting in sequence means that multiple first air knives are started in sequence in the height direction (from top to bottom or from bottom to top), and starting alternately means that multiple first air knives are not started in order of height, and after one of the first air knives is started, another first air knife can be stopped.

[0088] In a specific embodiment, the multiple first air knives are started in sequence along the height direction of the ton bag, specifically including that the multiple first air knives are started in sequence from bottom to top, and are closed in sequence from bottom to top. The reason for starting in sequence from bottom to top is that, since the ton bag is lifted upward, the bottom surface of the ton bag first passes through the lowest first air knife, and then passes through the other first air knives in sequence, so the lowest first air knife can be started first. Similarly, the reason for closing in sequence from bottom to top is that the distance between the first air knife at a lower position and the ton bag increases, the blowing effect is weakened, and it can be closed first.

[0089] In a specific embodiment, the intermittent alternating start of multiple first air knives specifically includes: the first air knife with the lowest installation position is started and stopped first, then the first air knife with the second lowest installation position is started and stopped later, then the first air knife with the second highest installation position is started and stopped later, and then the first air knife with the highest installation position is started and stopped later. After all the first air knives have been started once, the first air knives can be started and stopped multiple times in the above order to blow and shower the ton bag.

[0090] In one embodiment, there are multiple second air knives, and keeping the second air knives working includes: starting multiple second air knives in sequence along the height direction of the ton bag; or, starting multiple second air knives intermittently and alternately. The control method of the second air knife can refer to the above-mentioned first air knife, and will not be repeated here.

[0091] In one embodiment, the first air knife and the second air knife are controlled to blow air toward the ton bag according to the height of the ton bag compared to the bottom wall, and further comprises:

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

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

[0094] In a specific embodiment, the first wind knife and / or the second wind knife are rotatably mounted on the mounting wall. When Hs

[0095] In a specific embodiment, when Hs>H1, the controller can control the first wind knife to rotate around the first axis, so as to blow and shower the side of the big bag. Similarly, the controller can control the second wind knife to rotate around the second axis, so as to blow and shower a larger area of ​​the side of the big bag. Optionally, the size of the angle α3 is 0° to 180°, and the size of the angle α4 is 0° to 180°.

[0096] The present invention also provides an automatic unpacking device, which includes the feeding unit provided in the above embodiment, and also uses the control method of the feeding unit provided in the above embodiment to blow and shower the ton bag.

[0097] ​The embodiments of the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A feeding unit (100), characterized in that: include: A receiving bin (10) for receiving ton bags (200), wherein the receiving bin (10) comprises a mounting wall (11) and a bottom wall (12); A lifter (20) is housed in the housing bin (10), and the lifter (20) is used to lift the ton bag (200); A first wind knife (30) and a second wind knife (40) are arranged on the installation wall (11) at intervals along a height direction (X) of the receiving bin (10), and an installation height of the first wind knife (30) relative to the bottom wall (12) is higher than an installation height of the second wind knife (40) relative to the bottom wall (12); A controller is used to control the first wind knife (30) and the second wind knife (40) to blow air toward the ton bag (200) according to the height of the ton bag (200) compared to the bottom wall (12).

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

3. The feeding unit (100) according to claim 1, characterized in that: The air outlet direction of the first wind knife (30) forms an angle with the mounting wall (11), and along the height direction (X) of the receiving bin (10), the first wind knife (30) blows air from bottom to top toward the ton bag (200), and the second wind knife (40) blows air from top to bottom toward the ton bag (200).

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

5. The feeding unit (100) according to claim 1, characterized in that: The number of the mounting walls (11) is multiple, and the multiple mounting walls (11) together enclose the receiving space of the receiving bin (10); at least one of the mounting walls (11) is provided with a first wind knife (30) and a second wind knife (40); one of the mounting walls (11) is provided with a feed port, and the ton bag (200) is used to enter the receiving bin (10) from the feed port.

6. The feeding unit (100) according to claim 1, characterized in that: The feeding unit (100) further comprises a windshield shell (60), wherein the windshield shell (60) is connected to the mounting wall (11), and the windshield shell (60) is arranged to cover the outer periphery of the first wind knife (30) and / or the second wind knife (40), and an air shower port (61) is provided on the windshield shell (60), and the air outlet of the first wind knife (30) and / or the second wind knife (40) is connected to the air shower port (61).

7. The feeding unit (100) according to claim 6, characterized in that: The windshield shell (60) is covered on the outer periphery of the first wind knife (30), and the windshield shell (60) includes a windshield member (62). The windshield member (62) is accommodated inside the windshield shell (60), and the windshield member (62) divides the internal space of the windshield shell (60) into a first space (601) and a second space (602). The windshield member (62) is provided with a bayonet (603) connecting the first space (601) and the second space (602). The first space (601) is connected to the air shower port (61), and the first wind knife (30) extends from the second space (602) into the first space (601), and the first wind knife (30) abuts against the windshield member (62).

8. The feeding unit (100) according to claim 7, characterized in that: The feeding unit (100) further comprises a sealing member (63), wherein the sealing member (63) is arranged on the bayonet (603), and the first air knife (30) abuts against the wind shield (62) via the sealing member (63); or, the sealing member (63) is arranged on the periphery of the air shower port (61), and the periphery of the air outlet of the first air knife (30) abuts against the peripheral wall of the air shower port (61) via the sealing member (63).

9. The feeding unit (100) according to claim 6, characterized in that: The windshield shell (60) is covered on the outer periphery of the first wind knife (30), and the windshield shell (60) includes a first flow guide (64), and the first flow guide (64) is accommodated inside the windshield shell (60), and the first flow guide (64) includes a first flow guide surface (641) and a second flow guide surface (642), and the first flow guide surface (641) and the second flow guide surface (642) are arranged relatively spaced apart, and the air outlet of the first wind knife (30) is located between the first flow guide surface (641) and the second flow guide surface (642), and the first flow guide surface (641) and the second flow guide surface (642) form a non-zero angle.

10. The feeding unit (100) according to claim 6, characterized in that: The windshield shell (60) comprises a second flow guide (65), the second flow guide (65) being arranged at the air shower opening (61), and the second flow guide (65) being movably connected to the wall surface of the air shower opening (61).

11. The feeding unit (100) according to claim 1, characterized in that: The mounting wall (11) is provided with a first air shower port (611) and a second air shower port (612); the first air knife (30) and the second air knife (40) are arranged on a 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 port (611); and the air outlet of the second air knife (40) is connected to the second air shower port (612).

12. The feeding unit (100) according to claim 1, characterized in that: The feeding unit (100) further comprises a detector, wherein the detector is electrically connected to the controller, and 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 toward the ton bag (200) respectively according to the detection result of the detector.

13. A method for controlling a feeding unit (100), characterized in that: The feeding unit (100) comprises a receiving bin (10), a lifting device (20), a first air knife (30), a second air knife (40) and a controller, wherein the first air knife (30) and the second air knife (40) are arranged on the mounting wall (11) at intervals along a height direction (X) of the receiving bin (10); The control method of the feeding unit (100) comprises: Controlling the lifting device (20) to lift the ton bag (200); Controlling the first wind knife (30) and the second wind knife (40) to blow air toward the ton bag (200) according to the height of the ton bag (200) relative to the bottom wall; Wherein, when the height of the ton bag (200) compared to the bottom wall is lower than the installation height of the second wind knife (40) compared to the bottom wall, the second wind knife (40) is started to blow air toward the top surface of the ton bag (200); and when the height of the ton bag (200) compared to the bottom wall is higher than the installation height of the first wind knife (30) compared to the bottom wall, the first wind knife (30) is started to blow air toward the bottom surface of the ton bag (200).

14. The control method of the feeding unit (100) according to claim 13, characterized in that: According to the height of the ton bag (200) compared to the bottom wall, the first wind knife (30) and the second wind knife (40) are controlled to blow air toward the ton bag (200), and further comprising: In the case where 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 wind knife (30) and the second wind knife (40) working; or, The first wind knife (30) is kept in operation, and the second wind knife (40) is stopped.

15. An automatic unpacking device, characterized in that: The automatic unpacking equipment comprises a feeding unit (100) as claimed in any one of claims 1 to 12.

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