Cutting device and automatic unpacking equipment

Abstract

The utility model provides a cutting device and automatic unpacking equipment. The cutting device comprises a base part and a cutting part. The cutting part is arranged on the base part and provided with a pinnacle and a valley bottom, a first tangent plane and a second tangent plane are arranged at the end, away from the base part, of the cutting part, one of the first tangent plane and the second tangent plane is connected with the outer side face of the cutting part, and the other one of the first tangent plane and the second tangent plane is connected with the inner side face of the cutting part. The included angle between the second tangent plane and the height direction of the cutting device is smaller than that between the first tangent plane and the height direction of the cutting device. The sharpness of the cutting device at the valley bottom is improved, and the ton bag is cut open before being torn.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ton bag unpacking, and in particular to a cutting device and automatic unpacking equipment. BACKGROUND

[0002] When the cutting device of the traditional unpacking equipment cuts the ton bag, the cutting effect of the cutting device on the ton bag is poor after the ton bag is cut open, the cut of the ton bag is easily torn under the extrusion of the material, and a large amount of debris is generated, which pollutes the material. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a cutting device and automatic unpacking equipment to solve the problem that the cutting device easily generates debris when cutting the ton bag.

[0004] In a first aspect, the present application provides a cutting device, which comprises a base and a cutting part. The cutting part is arranged on the base, the cutting part is provided with a sharp top and a valley bottom, the height of the cutting part protruding from the base at the sharp top is greater than the height of the cutting part protruding from the base at the valley bottom; one end of the cutting part away from the base is provided with a first cutting surface and a second cutting surface, one of the first cutting surface and the second cutting surface is connected with the outer side surface of the cutting part, and the other is connected with the inner side surface of the cutting part, the second cutting surface is connected to the first cutting surface, and the included angle between the second cutting surface and the height direction of the cutting device is smaller than the included angle between the first cutting surface and the height direction of the cutting device at the corresponding valley bottom.

[0005] In combination with the first aspect, in some implementations of the first aspect, the first cutting surface and the second cutting surface are both arranged to extend along the circumferential direction of the cutting device, the connection between the first cutting surface and the second cutting surface forms a connection edge, and the connection between the first cutting surface and the cutting part forms a cutting edge, the distance between the connection edge and the cutting edge at the valley bottom is smaller than the distance between the connection edge and the cutting edge at the sharp top in a projection plane perpendicular to the height direction of the cutting device.

[0006] In combination with the first aspect, in some implementations of the first aspect, the end of the cutting part away from the base has a first section and a plurality of second sections, the first section is connected between two adjacent second sections along the circumferential direction of the cutting device, the valley bottom is located in the first section, the distance between the connection edge and the cutting edge remains unchanged in the first section, and the distance between the connection edge and the cutting edge gradually decreases from the sharp top to the valley bottom in the second section.

[0007] With reference to the first aspect, in some implementations of the first aspect, the first section is symmetrically arranged with respect to a line connecting the valley bottom and the center of the cutting device at both ends of the circumferential direction of the cutting device.

[0008] With reference to the first aspect, in some implementations of the first aspect, an angle between two lines connecting both ends of the circumferential direction of the cutting device and the center of the cutting device is 20-50°.

[0009] With reference to the first aspect, in some implementations of the first aspect, an included angle between the second surface and the height direction of the cutting device corresponding to the valley bottom is greater than an included angle between the second surface and the height direction of the cutting device corresponding to the peak.

[0010] With reference to the first aspect, in some implementations of the first aspect, in the first section, the included angle between the second surface and the height direction of the cutting device remains unchanged, and in the second section, the included angle between the second surface and the height direction of the cutting device gradually increases in a direction from the peak to the valley bottom.

[0011] With reference to the first aspect, in some implementations of the first aspect, the base portion has two opposite ends in the circumferential direction of the cutting device, the two ends are arranged at intervals, and the cutting portion is provided with the peak corresponding to at least one end of the base portion, and the cutting portion is provided with the valley bottom corresponding to a position between the two ends of the base portion.

[0012] With reference to the first aspect, in some implementations of the first aspect, the cutting portion is provided with at least one peak corresponding to a position between the two ends of the base portion.

[0013] With reference to the first aspect, in some implementations of the first aspect, two peaks adjacent to the valley bottom are symmetrically arranged with respect to a line connecting the valley bottom and the center of the cutting device in the circumferential direction of the cutting device.

[0014] With reference to the first aspect, in some implementations of the first aspect, the cutting portion further comprises a third surface, the third surface is connected between the first surface and an end surface of the cutting portion close to the peak, and the third surface is inclined towards a direction close to the base portion with respect to the first surface.

[0015] With reference to the first aspect, in some implementations of the first aspect, in a projection plane perpendicular to the height direction of the cutting device, a distance between the connecting edge and the cutting edge gradually decreases in a direction from the peak to the valley bottom.

[0016] In some implementations of the first aspect, the base and / or the cutting portion are provided with at least one hollow hole, and a hole wall of the hollow hole close to the base is inclined towards the direction close to the base.

[0017] In some implementations of the first aspect, an end of the cutting portion away from the base is provided in a wavy or zigzag shape.

[0018] In some implementations of the first aspect, the second cutting surface is located on a side of the first cutting surface close to the base.

[0019] In the second aspect, the application provides an automatic unpacking device, which comprises the cutting device according to any one of the above.

[0020] In the cutting device and the automatic unpacking device, the cutting portion is provided with a sharp top and a valley bottom, an end of the cutting portion away from the base is provided with a first cutting surface and a second cutting surface, the second cutting surface is connected to the first cutting surface, and the included angle between the second cutting surface and the height direction of the cutting device is smaller than the included angle between the first cutting surface and the height direction of the cutting device at the valley bottom. Therefore, the second cutting surface can reduce the thickness of the end of the cutting portion away from the base at the valley bottom, and the second cutting surface improves the sharpness of the cutting device at the corresponding valley bottom. When the cutting device moves relative to the ton bag to cut the ton bag, the sharp top can quickly pierce the ton bag, and the contact position of the cutting portion on the ton bag moves from the sharp top to the valley bottom. Since the thickness of the cutting portion at the valley bottom is small, the pressure of the cutting portion acting on the ton bag can be increased, so that the ton bag can be cut before being torn by the material, and the generation of debris during cutting is avoided, the pollution of the material by the debris is avoided, and the reliability and use experience of the automatic unpacking device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is a sectional view of the automatic unpacking device provided by the embodiments of the application.

[0023] Figure 2 is a partial structural schematic view of the cutting device provided by the embodiments of the application.

[0024] Figure 3 is a structural schematic view of the cutting member provided by the embodiments of the application.

[0025] Figure 4 is a top view of the cutting member provided by an embodiment of the present application.

[0026] Figure 5 is a cross-sectional view of the cutting member provided by an embodiment of the present application.

[0027] Figure 6 is a cross-sectional view of the cutting member provided by an embodiment of the present application.

[0028] Figure 7 is a variation diagram of the angle between the second cutting surface and the height direction of the cutting device.

[0029] Figure 8 is Figure 3 is an enlarged view of I in FIG. 8.

[0030] Figure 9 is a structural schematic diagram of the cutting device provided by an embodiment of the present application.

[0031] Figure 10 is a partial cross-sectional view of the cutting device provided by an embodiment of the present application.

[0032] Figure 11 is a partial cross-sectional view of the cutting device provided by an embodiment of the present application.

[0033] Figure 12 is a partial cross-sectional view of the cutting device provided by an embodiment of the present application.

[0034] Main reference signs: automatic unpacking equipment-100; cutting device-5; cutting member-51; first section 5101; second section 5102; angle-α1; base-511; hollow hole-5111; hole wall-5112; through hole-5113; cutting part-512; end face 5120; inner side face-5121; outer side face-5122; pointed top-5123; valley bottom-5124; first cutting surface-5131; second cutting surface-5132; third cutting surface-5133; connecting edge-5134; cutting edge 5135; support member-52; air duct-5201; air outlet-5202; communication hole-5203; mounting seat-54; guide surface-540; included angle-θ1; seat body-541; mounting groove-5411; mounting hole-5412; abutting part-5413; locking member-5414; first locking part-5415; second locking part-5416; elastic member-5417; protective member-542; accommodation space-5420; inclined surface-5421; sealing member-543; flow guide member-55; lifting structure-56; fixed support-566; blanking device-6; first hopper-61; accommodating cavity-611; dust suction port-6111; second hopper-62; feed inlet-6221; dust suction structure-63; material collecting structure-64; bag pushing device-7; circumferential direction-C; radial direction-R; height direction-Z.

[0035] The following detailed description will further describe the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] Reference herein to "an embodiment" or "embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment(s) can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" or "in embodiments" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiments. It is explicitly contemplated that embodiments described herein can be combined with each other.

[0038] It should be noted that the terms “first”, “second” and the like in the description and claims of the application and in the above drawings are used only to describe different objects and not to describe a specific order. The term “and / or” used in the application refers to any combination of one or more of the associated listed items and all possible combinations thereof, and includes these combinations.

[0039] Please refer to Figure 1 and Figure 2 , Figure 1 is a cross-sectional view of the automatic unpacking equipment 100 provided by the embodiments of the application, Figure 2 is a partial structural schematic view of the cutting device 5. In the embodiments of the application, in order to describe more clearly, the C-axis direction is defined as the circumferential direction of the cutting device 5, the R-axis is defined as the radial direction of the cutting device 5, and the Z-axis is defined as the height direction of the cutting device 5. The radial direction R and the height direction Z are perpendicular to each other. The tangent direction of the circumferential direction C is perpendicular to the height direction Z and the corresponding radial direction R, respectively. Figure 2

[0040] The automatic unpacking equipment 100 is used for unpacking operation of ton bags to take out the materials in the ton bags. The automatic unpacking equipment 100 comprises a cutting device 5 and a discharging device 6. The cutting device 5 is installed in the discharging device 6. The cutting device 5 is used for cutting the ton bags to make the materials in the ton bags flow out from the incision. The discharging device 6 is used for collecting the materials flowing out from the ton bags.

[0041] Please refer to Figure 3 , Figure 4 and Figure 5 , Figure 3 is a structural schematic view of the cutting piece 51 provided by the embodiments of the application, Figure 4 is a top view of the cutting piece 51 provided by the embodiments of the application, Figure 5 ​FIG. 11 is a sectional view of a cutting member 51 provided by an embodiment of the present application. The cutting device 5 comprises the cutting member 51. The cutting member 51 comprises a base 511 and a cutting portion 512. The base 511 has two opposite ends along a circumferential direction C of the cutting device 5, and the two ends are spaced apart, i.e., the base 511 forms a gap between the two opposite ends, so that the part of the ton bag at the gap will not be cut and remain connected with other parts of the ton bag to avoid falling into the material. The base 511 is annularly arranged. Among them, annularly arranged means that the part of the base 511 between the two opposite ends is continuous, and the orthographic projection of the base 511 on the projection plane perpendicular to the height direction Z of the cutting device 5 is substantially semi-enclosed, for example, it can be C-shaped, it can be F-shaped, it can be three-quarters of a circle, it can be five-sixths of a circle, etc. Illustratively, in the embodiment, the base 511 is configured as a circular ring. The circumferential direction C is the extension direction of the base 511, i.e., the circumferential direction C is the circumferential direction. In some embodiments, the base 511 can be configured as an elliptical ring, a triangular ring, a rectangular ring, a regular polygonal ring, an irregular polygonal ring, etc. Among them, when the base 511 is configured as a polygonal ring, the circumferential direction C is polygonal as a whole, and at the corresponding side, the circumferential direction C is parallel to the extension direction of the side. For example, when the base 511 is configured as F-shaped, for the three sides of the base 511, the circumferential direction C is parallel to the extension direction of the corresponding side, and the circumferential direction C is F-shaped as a whole. In the embodiment, along the height direction Z of the cutting device 5, the height of each part of the base 511 between the two opposite ends is consistent or similar.

[0042] The cutting portion 512 is arranged on the base 511. The cutting portion 512 is arranged protruding relative to the base 511 along the height direction Z of the cutting device 5. Among them, the cutting portion 512 is integrally formed with the base 511.

[0043] The cutting portion 512 is provided with a pointed top 5123 at a position corresponding to at least one end of the base portion 511. The cutting portion 512 is provided with a valley bottom 5124 at a position corresponding to between two ends of the base portion 511. The height of the cutting portion 512 protruding relative to the base portion 511 at the pointed top 5123 is greater than the height of the cutting portion 512 protruding relative to the base portion 511 at the valley bottom 5124. Among them, the part below the valley bottom 5124 is the base portion 511 along the height direction Z of the cutting device 5. The end of the cutting portion 512 away from the base portion 511 is provided with a first cutting surface 5131 and a second cutting surface 5132. The first cutting surface 5131 and the second cutting surface 5132 are both arranged to extend along the circumferential direction C of the cutting device 5. The first cutting surface 5131 and the second cutting surface 5132 are arranged at an angle in the height direction Z. The first cutting surface 5131 is connected to the outer side surface 5122 of the cutting portion 512, and the second cutting surface 5132 is connected to the inner side surface 5121 of the cutting portion 512. The second cutting surface 5132 is connected to the first cutting surface 5131 and inclined relative to the first cutting surface 5131 towards the direction close to the base portion 511. The first cutting surface 5131 and the second cutting surface 5132 form the blade portion of the cutting piece 51, which is used to cut the ton bag. At a position corresponding to the valley bottom 5124, the angle between the second cutting surface 5132 and the height direction Z of the cutting device 5 is smaller than the angle between the first cutting surface 5131 and the height direction Z of the cutting device 5. In this way, the second cutting surface 5132 can reduce the thickness of the end of the cutting portion 512 away from the base portion 511 at the valley bottom 5124, thereby improving the sharpness of the cutting device 5 at the position corresponding to the valley bottom 5124. When the cutting device 5 moves relative to the ton bag to cut the ton bag, the pointed top 5123 can quickly pierce the ton bag, and the contact position of the cutting portion 512 with the ton bag moves from the pointed top 5123 to the valley bottom 5124. Since the thickness of the cutting portion 512 at the valley bottom 5124 is smaller, the pressure of the cutting portion 512 acting on the ton bag can be increased, thereby cutting the ton bag before it is torn by the material, so that the cutting portion 512 has good cutting effect on the ton bag everywhere, fully avoids the generation of debris during cutting, avoids the pollution of the material caused by the debris, and improves the reliability and use experience of the automatic unpacking equipment 100. Among them, the distance between the connecting edge 5134 and the cutting edge 5135 is the distance between the connecting edge 5134 and the cutting edge 5135 along the radial direction R of the cutting device 5.

[0044] The connection between the first cutting surface 5131 and the second cutting surface 5132 forms a connecting edge 5134. The connection between the first cutting surface 5131 and the cutting portion 512 forms a cutting edge 5135. In the projection plane perpendicular to the height direction Z of the cutting device 5, the distance between the connecting edge 5134 and the cutting edge 5135 at the valley bottom 5124 is less than the distance between the connecting edge 5134 and the cutting edge 5135 at the peak top 5123. In this way, the distance between the connecting edge 5134 and the cutting edge 5135 at the valley bottom 5124 can be made smaller, thereby reducing the thickness of the cutting portion 512 at the end away from the base portion 511 at the valley bottom 5124, and improving the sharpness of the cutting device 5 at the position corresponding to the valley bottom 5124. When the cutting device 5 moves relative to the ton bag to cut the ton bag, the peak top 5123 can quickly pierce the ton bag, and the contact position of the cutting portion 512 with the ton bag moves from the peak top 5123 to the valley bottom 5124. Since the thickness of the cutting portion 512 at the valley bottom 5124 is smaller, the pressure of the cutting portion 512 acting on the ton bag can be increased, thereby cutting the ton bag before the ton bag is torn by the material, so that the cutting portion 512 has good cutting effect on the ton bag at all positions, fully avoids the generation of debris during cutting, avoids the pollution of the material by the debris, and improves the reliability and use experience of the automatic unpacking equipment 100. The distance between the connecting edge 5134 and the cutting edge 5135 is the distance between the connecting edge 5134 and the cutting edge 5135 in the radial direction R of the cutting device 5.

[0045] In the present embodiment, the first cutting surface 5131 is connected with the outer side surface 5122 of the cutting portion 512, and the second cutting surface 5132 is connected with the inner side surface 5121 of the cutting portion 512. The included angle between the second cutting surface 5132 and the height direction Z of the cutting device 5 is smaller than the included angle between the first cutting surface 5131 and the height direction Z of the cutting device 5. In this way, based on the arrangement of the first cutting surface 5131 and the second cutting surface 5132, the first cutting surface 5131 can improve the structural strength of the blade portion, and the second cutting surface 5132 can reduce the thickness of the end of the cutting portion 512 away from the base portion 511 along the radial direction R of the cutting device 5, thereby improving the sharpness of the cutting portion 512 and improving the cutting ability of the cutting portion 512, so that the blade portion of the cutting portion 512 has sufficient structural strength and sharpness. On the one hand, it reduces the risk of burr and broken edge of the cutting portion 512 at the first cutting surface 5131, improves the service life of the cutting device 5, avoids metal debris, and further avoids metal debris contaminating the material; on the other hand, it can improve the cutting ability of the cutting portion 512 to the ton bag, which is beneficial to avoid the generation of debris during the cutting process, thereby avoiding the contamination of the material by the debris; on the other hand, when the material falls, the material can flow towards the center of the cutting device 5 through the guiding effect of the first cutting surface 5131 and the second cutting surface 5132, avoiding the outward diffusion of the material and reducing the dust generated when the material falls. The second cutting surface 5132 can be located on the side of the first cutting surface 5131 close to the base portion 511, and the included angle between the first cutting surface 5131 and the second cutting surface 5132 is obtuse. In some embodiments, the first cutting surface 5131 can be connected with the inner side surface 5121 of the cutting portion 512, and the second cutting surface 5132 can be connected with the outer side surface 5122 of the cutting portion 512.

[0046] Please refer to Figure 6 , Figure 6 is a cross-sectional view of the cutting member 51 provided in some embodiments of the present application. In some embodiments, the included angle between the first cutting surface 5131 and the second cutting surface 5132 is acute. The second cutting surface 5132 can be connected with the inner side surface 5121 of the cutting portion 512.

[0047] In the present embodiment, the intersection line formed by the intersection of the first cutting surface 5131 with a plane parallel to the height direction Z of the cutting device 5 can be a straight line or a curved line. The intersection line formed by the intersection of the second cutting surface 5132 with a plane parallel to the height direction Z of the cutting device 5 can be a straight line or a curved line. In some embodiments, when the corresponding intersection line of the first cutting surface 5131 and / or the second cutting surface 5132 is a curved surface, the angle between the first cutting surface 5131 and the height direction Z of the cutting device 5 can be the angle between the direction of the line connecting the opposite ends of the first cutting surface 5131 along the radial direction R of the cutting device 5 and the height direction Z of the cutting device 5, and the angle between the second cutting surface 5132 and the height direction Z of the cutting device 5 can be the angle between the direction of the line connecting the opposite ends of the second cutting surface 5132 along the radial direction R of the cutting device 5 and the height direction Z of the cutting device 5.

[0048] Please refer to Figure 3 , Figure 4 and Figure 5 together. The cutting portion 512 has a first section 5101 and a plurality of second sections 5102 away from the base portion 511. Along the circumferential direction C of the cutting device 5, the first section 5101 is connected between two adjacent second sections 5102. The valley bottom 5124 is located in the first section 5101. The pointed top 5123 is located at one end of the second section 5102 away from the first section 5101. In the first section 5101, the distance between the connecting edge 5134 and the cutting edge 5135 remains unchanged. In the second section 5102, the distance between the connecting edge 5134 and the cutting edge 5135 gradually decreases from the pointed top 5123 to the valley bottom 5124. Among them, in the second section 5102, the distance between the connecting edge 5134 and the cutting edge 5135 can gradually decrease in a linearly changing manner or in a non-linearly changing manner from the pointed top 5123 to the valley bottom 5124. Among them, the distance between the connecting edge 5134 and the cutting edge 5135 in the first section 5101 is smaller than the distance between the connecting edge 5134 and the cutting edge 5135 in the second section 5102.

[0049] In the embodiment, the protruding height of the cutting portion 512 relative to the base portion 511 gradually decreases from the tip 5123 to the valley 5124, so that the cutting portion 512 can smoothly cut the ton bag when cutting the ton bag, which is conducive to avoiding the generation of debris during the cutting process, thereby avoiding the pollution of the material by the debris. When the cutting portion 512 cuts the ton bag, the cutting angle formed between the tangent direction corresponding to the contact point of the cutting portion 512 and the bag surface of the ton bag gradually decreases from the tip 5123 to the valley 5124. In the embodiment, the cutting edge 5135 is in contact with the bag surface of the ton bag, and the cutting angle formed between the cutting portion 512 and the ton bag is the included angle between the tangent direction of the contact point position of the cutting edge 5135 and the tangent plane of the corresponding contact point position of the bag surface of the ton bag. When the cutting angle is larger, the cutting ability of the cutting portion 512 on the ton bag is relatively larger, and when the cutting angle is smaller, the cutting ability of the cutting portion 512 on the ton bag is relatively smaller. In the embodiment, on the one hand, based on the distance between the connecting edge 5134 and the cutting edge 5135 in the first section 5101 being smaller than the distance between the connecting edge 5134 and the cutting edge 5135 in the second section 5102, the end of the cutting portion 512 away from the base portion 511 can have a smaller thickness in the part corresponding to the first section 5101, that is, a larger sharpness, so that the cutting portion 512 can still have sufficient cutting ability when the cutting angle of the cutting portion 512 relative to the ton bag is smaller, thereby cutting the ton bag before the ton bag is torn by the material; on the other hand, in the first section 5101, the change range of the cutting angle of the cutting portion 512 relative to the ton bag is smaller, and the distance between the connecting edge 5134 and the cutting edge 5135 remains unchanged in the first section 5101, which can reduce the processing difficulty of the cutting portion 512 and reduce the manufacturing cost of the cutting device 5; on the other hand, in the second section 5102, the change range of the cutting angle of the cutting portion 512 relative to the ton bag is larger, and the distance between the connecting edge 5134 and the cutting edge 5135 gradually decreases from the tip 5123 to the valley 5124 in the second section 5102, so that the thickness of the end of the cutting portion 512 away from the base portion 511 gradually decreases from the tip 5123 to the valley 5124, that is, the sharpness of the cutting portion 512 gradually increases from the tip 5123 to the valley 5124, so that when the cutting angle of the cutting portion 512 relative to the ton bag decreases, the cutting ability of the cutting portion 512 on the ton bag is improved by increasing the sharpness of the cutting portion 512, so that the cutting portion 512 has good cutting ability on the ton bag, and the cutting portion 512 can cut the ton bag before the ton bag is torn by the material, thereby effectively avoiding the generation of debris. In the embodiment, the thickness of the end of the cutting portion 512 away from the base portion 511 is the thickness of the blade portion of the cutting portion 512.

[0050] In some embodiments, the distance between the connecting edge 5134 and the cutting edge 5135 at the position corresponding to the lowest point of the valley bottom 5124 can be set to zero, so as to sufficiently increase the sharpness of the cutting part 512 at the valley bottom 5124, so that the ton bag can be quickly cut after the valley bottom 5124 contacts the ton bag, thereby avoiding the problem of tearing of the ton bag under the extrusion of the material, thereby sufficiently reducing the generation of debris.

[0051] In the present embodiment, the first section 5101 is symmetrically arranged with respect to the two lines connecting the two ends of the cutting device 5 along the circumferential direction C of the cutting device 5 to the center of the cutting device 5. In this way, it is beneficial to improve the uniformity of the cutting ability of the cutting part 512, and it is beneficial to facilitate the processing of the cutting part 512.

[0052] The angle a1 of the two lines connecting the two ends of the first section 5101 along the circumferential direction C of the cutting device 5 to the center of the cutting device 5 is 20°-50°. In this way, when the cutting angle of the cutting part 512 with respect to the ton bag is large, the friction between the cutting part 512 and the ton bag is greater, and the degree of wear of the cutting part 512 is greater. By setting the angle a1 to be 20°-50°, the cutting part 512 has sufficient cutting ability at the second section 5102 with respect to the ton bag, while the cutting part 512 has sufficient cutting ability at the first section 5101, thereby improving the service life of the first section 5101 of the cutting part 512, and thereby improving the overall service life of the cutting device 5.

[0053] Specifically, the angle a1 can be set according to actual needs, and is not limited in the present application. For example, the angle a1 can be, but is not limited to, 20°, 22°, 24°, 26°, 28°, 30°, 34°, 36°, 40°, 44°, 46°, or 50°.

[0054] In some embodiments, in the projection plane perpendicular to the height direction Z of the cutting device 5, the distance between the connecting edge 5134 and the cutting edge 5135 gradually decreases from the pointed top 5123 to the valley bottom 5124. In this way, the second cutting surface 5132 can continuously change along the circumferential direction C of the cutting device 5, thereby improving the uniformity of the change in sharpness of the cutting part 512 and improving the stability during cutting. In the first section 5101, the distance between the connecting edge 5134 and the cutting edge 5135 can gradually decrease from the pointed top 5123 to the valley bottom 5124, and the change trend corresponds to the second section 5102. The distance between the connecting edge 5134 and the cutting edge 5135 can gradually decrease from the pointed top 5123 to the valley bottom 5124 in a linear change manner, or in a non-linear change manner.

[0055] Please refer to Figure 7 , Figure 7This is a schematic diagram showing the change in the angle between the second cutting surface 5132 and the height direction of the cutting device 5 in this application. Figure 7 In the diagram, figures A and C are enlarged views of the cross-sectional view of the cutting component 51 along line AC, and figures B and D are enlarged views of the cross-sectional view of the cutting component 51 along line BD. The distances between positions A, B, C, and D and the valley bottom 5124 increase sequentially along the circumferential direction C of the cutting device 5, with position A having the smallest distance from the valley bottom 5124. In this embodiment, the angle between the second cutting surface 5132 at the corresponding valley bottom 5124 and the height direction Z of the cutting device 5 is greater than the angle between the second cutting surface 5132 at the corresponding peak 5123 and the height direction Z of the cutting device 5. Figure 7 As shown, as the distance from the valley floor 5124 decreases, the angle between the second cut surface 5132 and the height direction Z of the cutting device 5 gradually increases. This increased angle between the second cut surface 5132 and the height direction Z of the cutting device 5 increases the proportion of the second cut surface 5132 on the cutting portion 512 along the radial direction R of the cutting device 5, thereby reducing the thickness of the end of the cutting portion 512 away from the base 511, and thus improving the sharpness and cutting ability of the cutting portion 512 near the valley floor 5124.

[0056] In the first section 5101, the angle between the second cut surface 5132 and the height direction R of the cutting device 5 can remain constant. In the second section 5102, the angle between the second cut surface 5132 and the height direction R of the cutting device 5 can gradually increase from the apex 5123 to the valley 5124. This reduces the processing difficulty of the cutting part 512 in the first section 5101, thus reducing the manufacturing cost of the cutting device 5; it also allows the sharpness of the cutting part 512 to gradually increase from the apex 5123 to the valley 5124, ensuring good cutting capability for the ton bag at all points. In the second section 5102, the angle between the second cut surface 5132 and the height direction R of the cutting device 5 can increase linearly or non-linearly.

[0057] In some embodiments, the angle between the second cut surface 5132 at the corresponding valley bottom 5124 and the height direction Z of the cutting device 5 is smaller than the angle between the second cut surface 5132 at the corresponding peak 5123 and the height direction Z of the cutting device 5. Furthermore, on the projection plane perpendicular to the height direction Z of the cutting device 5, the distance between the connecting edge 5134 and the cutting edge 5135 at the valley bottom 5124 is smaller than the distance between the connecting edge 5134 and the cutting edge 5135 at the peak 5123. This further improves the sharpness of the cutting portion 512 near the valley bottom 5124, thereby enhancing cutting capability. The angle between the second cut surface 5132 and the height direction Z of the cutting device 5 can decrease from the peak 5123 towards the valley bottom 5124.

[0058] The cutting part 512 is provided with at least one pointed top 5123 at a position between the opposite two ends corresponding to the base part 511. Exemplarily, the cutting part 512 is provided with one pointed top 5123 at a position corresponding to each of the two end parts of the base part 511 and at a middle position between the opposite two ends. Three pointed tops and two valley bottoms 5124 are formed on the cutting part 512. In this way, when the cutting piece 51 cuts the ton bag, the three pointed tops quickly pierce the bottom of the ton bag, and at this time, the ton bag bottom has three positions that remain connected, which is beneficial to the ton bag bottom remaining taut under the compression of the internal material, the material does not pour out or only a small degree of pouring out at the position of the pointed top, while reducing the risk of the ton bag being torn under the extrusion of the material, and the ton bag bottom will remain taut until the valley bottom 5124 of the cutting part 512 enters the ton bag, that is, the material will pour out from the cutout only after the part of the ton bag bottom corresponding to the blade part is completely cut open, thereby making the cutout of the ton bag more smooth and effectively reducing or avoiding the generation of debris when the cutting device 5 cuts the ton bag. The number of pointed tops 5123 can be specifically set according to actual needs, which is not specifically limited in the present application. For example, the number of pointed tops 5123 can be 2-5.

[0059] In the height direction Z of the cutting device 5, the protruding height of the cutting part 512 relative to the base part 511 continuously decreases from the pointed top 5123 to the valley bottom 5124. In this way, the cutting part 512 is smooth and continuous between the pointed top 5123 and the valley bottom 5124, which can make the cutting part 512 smoothly cut the ton bag and reduce or eliminate the shaking problem of the cutting part 512 when cutting the ton bag, thereby reducing or avoiding the generation of debris in the cutting process.

[0060] In the present embodiment, the protruding height of the cutting part 512 relative to the base part 511 is the same at each pointed top 5123, so that when cutting the ton bag, each pointed top 5123 can simultaneously contact the bottom of the ton bag, thereby improving the uniformity of the stress when cutting the cutting piece 51 and improving the smoothness of the cutout on the ton bag.

[0061] Among them, along the circumferential direction C of the cutting device 5, the two pointed tops 5123 adjacent to the valley bottom 5124 are symmetrically arranged relative to the line connecting the valley bottom 5124 and the center of the cutting device 5. The valley bottom 5124 is located on the perpendicular bisector of the line connecting the two adjacent pointed tops 5123. In this way, when the cutting part 512 cuts the ton bag, it is beneficial to the uniform stress on the part of the ton bag corresponding to the valley bottom 5124 that has not been cut open, so as to avoid the problem of tearing of the ton bag due to uneven stress, and facilitate the processing of the cutting part 512.

[0062] Please refer to Figure 3 and Figure 7 , Figure 7 is Figure 3The enlarged view of the middle I. The first cutting surface 5131 and the second cutting surface 5132 extend to opposite ends of the cutting part 512 respectively. The cutting part 512 further comprises a third cutting surface 5133. The third cutting surface 5133 is connected between the first cutting surface 5131 and the end surface 5120 of the cutting part 512 close to the pointed top 5123, and is inclined towards the direction close to the base 511 relative to the first cutting surface 5131. Exemplarily, in the embodiment, the third cutting surface 5133 is connected with the first cutting surface 5131, the second cutting surface 5132, the end surface 5120 and the inner side surface 5121 respectively. In this way, the sharpness of the pointed top 5123 can be improved, so that the pointed top 5123 can pierce the ton bag more quickly when the pointed top 5123 contacts the ton bag, and the generation of debris can be reduced or avoided, and the pollution of the material by the debris can be avoided.

[0063] In some embodiments, the end of the cutting part 512 away from the base 511 can be arranged in a wavy shape or a zigzag shape. In this way, when the cutting part 512 cuts the ton bag, the cutting angle formed between the cutting part 512 and the ton bag can be changed intermittently by the wavy or zigzag shape of the cutting part 512, so that the cutting ability of the cutting part 512 on the ton bag can be improved.

[0064] Please refer to Figure 2 , Figure 8 and Figure 9 , Figure 8 is a structural schematic diagram of the cutting device 5 provided in some examples of the present application, Figure 9 is a partial sectional view of the cutting device 5 provided in examples of the present application. In some embodiments, the base 511 and / or the cutting part 512 is provided with at least one hollow hole 5111. On the one hand, the mass of the base 511 can be reduced, so that the cutting device 5 is lightweight. On the other hand, the material can flow out along the hollow hole 5111 during falling, so that the blocking of the material by the cutting member 51 is reduced, and the falling speed is improved. On the other hand, the hollow hole 5111 can also provide a holding point to facilitate the taking and placing of the cutting member 51. The number of the hollow holes 5111 can be set to be multiple, and the multiple hollow holes 5111 are arranged in the circumferential direction C of the cutting device 5. In some embodiments, the hollow hole 5111 can be formed on the base 511. In some embodiments, the hollow hole 5111 can be formed on the cutting part 512. In some embodiments, the base 511 and the cutting part 512 can be provided with hollow holes 5111, and some of the hollow holes 5111 can be arranged in communication, i.e. the hollow holes 5111 span the base 511 and the cutting part 512.

[0065] The hole wall 5112 of the hollow hole 5111 close to the base 511 is inclined towards the direction away from the blade. In this way, when the material falls on the hole wall 5112, the material will slide down along the hole wall 5112 under the action of gravity, thereby avoiding the material remaining on the hole wall 5112.

[0066] The cutting device 5 further comprises a mounting seat 54. The base 511 is detachably connected with the mounting seat 54, so as to reduce the disassembly and assembly difficulty of the cutting member 51 when performing maintenance or replacement, and facilitate the maintenance of the cutting device 5. The mounting seat 54 comprises a seat body 541 and a locking member 5414. The locking member 5414 is used for fixedly connecting the base 511 and the seat body 541 together. The seat body 541 is provided with a mounting groove 5411. The base 511 is accommodated in the mounting groove 5411. The locking member 5414 is used for fixing the base 511 in the mounting groove 5411. The side wall of the seat body 541 is provided with a mounting hole 5412 communicating with the mounting groove 5411. The base 511 is provided with a through hole 5113 at the position corresponding to the mounting hole 5412. The locking member 5414 is arranged in the mounting hole 5412 and the through hole 5113, so that the base 511 is fixed on the seat body 541.

[0067] In some embodiments, the mounting seat 54 further comprises an elastic member 5417. The elastic member 5417 is arranged in the mounting hole 5412. The hole wall of the mounting hole 5412 is provided with an abutting portion 5413. The abutting portion 5413 can be configured as an annular protrusion. The elastic member 5417 is elastically abutted between the abutting portion 5413 and the locking member 5414. The elastic member 5417 is used for providing an abutting force for the locking member 5414, so that the locking member 5414 is tightly connected with the seat body 541, and the locking member 5414 is prevented from loosening and falling off from the seat body 541.

[0068] In some embodiments, the locking member 5414 comprises a first locking portion 5415 and a second locking portion 5416. The first locking portion 5415 and the second locking portion 5416 are located on the two sides opposite to the abutting portion 5413. The first locking portion 5415 and the second locking portion 5416 are fixedly connected by thread connection, clamping, bonding or the like. The second locking portion 5416 is abutted with the side of the abutting portion 5413 away from the first locking portion 5415. The elastic member 5417 is elastically abutted between the first locking portion 5415 and the abutting portion 5413. The first locking portion 5415 is arranged in the through hole 5113. In some embodiments, the locking member 5414 can be configured as a screw or a bolt, and the locking member 5414 is threadedly connected with the seat body 541.

[0069] The top of the mounting seat 54 is provided with a guide surface 540. The top of the mounting seat 54 is the side of the mounting seat 54 close to the cutting member 51. The guide surface 540 is adjacent to the side wall of the base 511. The end of the guide surface 540 away from the base 511 is inclined towards the direction away from the cutting part 512 relative to the end of the guide surface 540 close to the base 511. In this way, the material falling on the guide surface 540 will slide under the action of gravity, thereby avoiding the material remaining on the mounting seat 54, and making full use of the material of the ton bag.

[0070] In some embodiments, the guide surface 540 can be provided on both sides of the mounting seat 54, i.e., on the side close to the inner side surface 5121 of the cutting member 51 and on the side close to the outer side surface 5122. Exemplarily, the guide surface 540 is provided on the top of the seat body 541.

[0071] The guide surface 540 can be configured as a plane or a curved surface. Exemplarily, the guide surface 540 can be configured as a plane to reduce the processing difficulty and cost of the mounting seat 54. In some embodiments, the guide surface 540 can also be configured as a curved surface, and the guide surface 540 can be configured as a curved surface convex towards the cutting member 51 to facilitate the material sliding along the guide surface 540.

[0072] The included angle θ1 between the guide surface 540 and the side wall of the cutting member 51 is less than 55°, i.e., the included angle between the guide surface 540 and the height direction Z. In some embodiments, the specific value of the included angle θ1 can be set according to actual needs, which is not limited in the present application. For example, the included angle θ1 can be, but is not limited to, 55°, 50°, 45°, 40°, or 30°.

[0073] Please refer to Figure 2 and Figure 10 , Figure 10 is a partial cross-sectional view of the cutting device 5 provided in some examples of the present application. In some embodiments, the mounting seat 54 includes a seat body 541 and a protective member 542. The seat body 541 is detachably connected to the base 511. The protective member 542 is at least partially located on the top of the seat body 541 and covers the connection between the base 511 and the seat body 541. The top of the protective member 542 is provided with a guide surface 540. In some embodiments, the protective member 542 can be wrapped around the seat body 541 to avoid the material remaining at the connection between the seat body 541 and the base 511, and to avoid the locking member 5414 being blocked by the material and unable to move relative to the seat body 541.

[0074] In some embodiments, the top of the seat body 541 can be provided with a guide surface 540, so that the shape of the seat body 541 corresponds to the shape of the protective member 542, avoiding structural interference, and making the structure of the mounting seat 54 compact.

[0075] The cutting device 5 further comprises a support 52. The support 52 is connected with the base 511 to fix the base 511. The support 52 is internally provided with a ventilation pipe 5201. The support 52 is provided with an air outlet hole 5202 communicating with the ventilation pipe 5201 at a position close to the base 511. The ventilation pipe 5201 is used to be connected with a gas supply structure for pumping gas into the ventilation pipe 5201. In this way, after the ton bag is cut open, the air outlet hole 5202 on the support 52 can blow gas to the ton bag, the gas can improve the flowability of the powder, and the ton bag can be kept at a positive pressure, thereby improving the falling speed of the powder, and the powder adhering to the inner wall of the ton bag can be blown off to avoid the powder remaining in the ton bag.

[0076] The number of air outlet holes 5202 on each support 52 can be specifically set according to actual needs, which is not specifically limited in the present application. For example, the air outlet hole 5202 on each support 52 can be provided as 1, 2, 3, 4, 5, etc.

[0077] The support 52 is provided in a plurality. The plurality of supports 52 are arranged at intervals along the circumferential direction C of the cutting device 5. The base 511 is annular, and the air outlet direction of the air outlet hole 5202 on each support 52 is parallel to the tangent direction of the base 511 at the connection between the support 52 and the base 511. When the base 511 is a circular ring, the tangent direction of the base 511 at the connection between the support 52 and the base 511 is perpendicular to the radial direction of the base 511. For example, when the base 511 is a polygonal ring, the tangent direction of the base 511 at the connection between the support 52 and the base 511 is parallel to the extension direction of the corresponding side of the base 511. In this way, the air outlet direction of the air outlet hole 5202 is parallel to the tangent direction of the base 511, and the air outlet holes 5202 on the plurality of supports 52 blow air into the ton bag together, which can form a rotating air flow inside the ton bag, thereby better improving the flowability of the powder and more thoroughly blowing off the powder adhering to the inner wall of the ton bag.

[0078] The plurality of supports 52 are arranged at equal intervals along the circumferential direction C of the cutting device 5 to improve the stability of the support 52 to the cutting member 51. The number of supports 52 can be specifically set according to actual needs, which is not specifically limited in the present application. For example, the support 52 can be provided as 3, 4, 5, 6, etc.

[0079] The cutting device 5 further comprises a connecting seat. The end of the support 52 away from the connecting seat is connected with the connecting seat. The connecting seat is internally provided with a gas storage cavity. The gas storage cavity communicates with the ventilation pipe 5201 of the support 52. In this way, through the equalizing pressure effect of the gas storage cavity, the air outlet pressure and air outlet flow rate of the air outlet hole 5202 on each support 52 can be consistent or similar, thereby improving the uniformity of air blowing to each position in the ton bag and avoiding the ton bag from being deflected due to uneven stress.

[0080] The protective piece 542 is provided with a containing space 5420. The air outlet hole 5202 is located outside the containing space 5420. The seat body 541 is located inside the containing space 5420. The support piece 52 extends into the containing space 5420 and is connected to the bottom of the seat body 541. The part of the support piece 52 extending into the containing space 5420 is provided with a communication hole 5203. The communication hole 5203 communicates the air passage 5201 and the containing space 5420. The communication hole 5203 is used for blowing air into the containing space 5420, so that the containing space 5420 maintains a positive pressure, so as to avoid material entering the containing space 5420 from the gap between the protective piece 542 and the cutting piece 51. In addition, by blowing air to the gap between the protective piece 542 and the cutting piece 51, the material on the protective piece 542 can also be blown off, so as to avoid material residues.

[0081] In some embodiments, the protective piece 542 is provided with an inclined surface 5421 away from the side of the cutting piece 51. The end of the inclined surface 5421 away from the cutting piece 51 is inclined toward the cutting piece 51. In this way, by the guiding effect of the inclined surface 5421, when the cutting device 5 exits from the ton bag, the protective piece 542 and the ton bag can be prevented from being hooked, which is beneficial for the cutting device 5 to exit the ton bag.

[0082] Please refer to Figure 11 , Figure 11 is a partial cross-sectional view of the cutting device 5 provided in another example of the present application. Figure 11 The embodiment shown is similar to the embodiment shown in Figure 10 The difference is that the mounting seat 54 further comprises a sealing piece 543. The sealing piece 543 abuts between the protective piece 542 and the base 511 of the cutting piece 51. The sealing piece 543 is used for sealing the gap between the protective piece 542 and the cutting piece 51, so as to avoid material entering the inside of the protective piece 542. The sealing piece 543 can be configured as a sealing ring, a sealing gasket, etc.

[0083] Please refer to Figure 1 and Figure 2The cutting device 5 further comprises a flow guide 55. The flow guide 55 is clamped on the connecting seat to simplify the fixing mode of the flow guide 55, avoid the flow guide 55 being connected with the connecting seat through screws, thus avoiding the problem that the screws are loose after long time use and fall into the powder, and reducing the installation difficulty of the flow guide 55. The side of the flow guide 55 away from the connecting seat is in a conical shape and protrudes away from the connecting seat. The flow guide 55 can be in a pyramid shape or a conical shape. The flow guide 55 is used to guide the powder when the powder falls, so that the powder slides along the conical surface of the flow guide 55, reducing the impact of the powder on the connecting seat. In addition, the flow guide 55 can also crush the caked powder, and through the shielding effect of the flow guide 55, the powder can also be prevented from accumulating at the connecting position of the support 52 and the connecting seat.

[0084] The cutting device 5 further comprises a lifting structure 56. The connecting seat is connected with the lifting structure 56. The lifting structure 56 is used to drive the connecting seat to move along the height direction Z of the cutting device 5, and the connecting seat drives the support 52 to move together with the cutting member 51, so that the cutting member 51 approaches or moves away from the ton bag.

[0085] The automatic unpacking equipment 100 further comprises a discharging device 6. The cutting device 5 is installed in the discharging device 6. The discharging device 6 is used to collect the powder flowing out of the ton bag. The discharging device 6 comprises a first hopper 61 and a second hopper 62. The second hopper 62 is arranged above the first hopper 61. The first hopper 61 is provided with a containing cavity 611. The lower end of the second hopper 62 extends into the containing cavity 611 and is spaced apart from the side wall of the first hopper 61. The lower end of the second hopper 62 is provided with a feeding port 6221. The cutting device 5 is installed in the first hopper 61 and extends from the feeding port 6221 into the second hopper 62. The automatic unpacking equipment 100 further comprises a fixing bracket 566. The fixing bracket 566 is used to fixedly connect the cutting device 5 and the first hopper 61 together. When the automatic unpacking equipment 100 is unpacking, the hooking assembly of the automatic unpacking equipment 100 moves the ton bag into the second hopper 62, the lifting structure 56 drives the cutting member 51 to cut the ton bag, the powder flows out of the cut of the ton bag and falls into the containing cavity 611 through the feeding port 6221.

[0086] The discharging device 6 further comprises a collecting device 64 connected to the bottom of the first hopper 61. The collecting device 64 is used to collect the powder falling into the accommodating cavity 611 and transfer the powder to other devices. The discharging device 6 further comprises a dust suction structure 63. A dust suction port 6111 is formed on the sidewall of the first hopper 61. The dust suction structure 63 is arranged at the dust suction port 6111. The dust suction structure 63 is used to filter the dust in the accommodating cavity 611. It can be understood that dust will be generated during the falling of the powder. In the present embodiment, the dust is blocked by the second hopper 62, and the suction of the dust suction structure 63 forms a negative pressure in the accommodating cavity 611, so that the dust can be effectively prevented from floating out of the accommodating cavity 611. The dust suction structure 63 is further used to deliver the filtered powder back into the accommodating cavity 611 or into the collecting device 64.

[0087] The automatic unpacking device 100 further comprises a bag pushing device 7. The bag pushing device 7 is arranged in the second hopper 62. When the automatic unpacking device 100 unpacks, the bag pushing device 7 is used to push or pat the four corners of the bottom of the ton bag towards the center of the ton bag, so that all the powder in the ton bag is discharged from the cut of the ton bag, and the powder is prevented from remaining in the ton bag.

[0088] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cutting device (5) characterized in that, The cutting device (5) comprises: a base (511); a cutting portion (512) arranged on the base (511), the cutting portion (512) is provided with a peak (5123) and a valley (5124), the height of the cutting portion (512) protruding from the base (511) at the peak (5123) is greater than the height of the cutting portion (512) protruding from the base (511) at the valley (5124); one end of the cutting portion (512) away from the base (511) is provided with a first tangent (5131) and a second tangent (5132), one of the first tangent (5131) and the second tangent (5132) is connected with an outer side (5122) of the cutting portion (512), and the other is connected with an inner side (5121) of the cutting portion (512), the second tangent (5132) is connected to the first tangent (5131), and the included angle between the second tangent (5132) and the height direction (Z) of the cutting device (5) at the corresponding valley (5124) is smaller than the included angle between the first tangent (5131) and the height direction (Z) of the cutting device (5).

2. The cutting device (5) according to claim 1, characterized in that Both the first tangent (5131) and the second tangent (5132) extend along the circumferential direction (C) of the cutting device (5), the connection between the first tangent (5131) and the second tangent (5132) forms a connection edge (5134), and the connection between the first tangent (5131) and the cutting portion (512) forms a cutting edge (5135); the distance between the connection edge (5134) and the cutting edge (5135) at the valley (5124) is smaller than the distance between the connection edge (5134) and the cutting edge (5135) at the peak (5123) in the projection plane perpendicular to the height direction (Z) of the cutting device (5).

3. The cutting device (5) according to claim 2, characterized in that The end of the cutting portion (512) away from the base (511) has a first section (5101) and a plurality of second sections (5102), along the circumferential direction (C) of the cutting device (5), the first section (5101) is connected between adjacent two second sections (5102), the valley (5124) is located in the first section (5101), and the distance between the connection edge (5134) and the cutting edge (5135) remains unchanged in the first section (5101), and the distance between the connection edge (5134) and the cutting edge (5135) gradually decreases from the peak (5123) to the valley (5124) in the second section (5102).

4. The cutting device (5) according to claim 3, characterized in that The two ends of the first section (5101) along the circumferential direction (C) of the cutting device (5) are symmetrically arranged relative to the line connecting the valley (5124) and the center of the cutting device (5).

5. The cutting device (5) according to claim 3, characterized in that The angle (α1) between the two lines connecting the two ends of the first section (5101) along the circumferential direction (C) of the cutting device (5) and the center of the cutting device (5) is 20°-50°.

6. The cutting device (5) according to claim 3, characterized in that An included angle between the second tangent surface (5132) and a height direction (Z) of the cutting device (5) corresponding to the valley bottom (5124) is greater than an included angle between the second tangent surface (5132) and the height direction (Z) of the cutting device (5) corresponding to the pointed top (5123).

7. The cutting device (5) according to claim 6, characterized in that In the first section (5101), an included angle between the second tangent surface (5132) and the height direction (Z) of the cutting device (5) remains unchanged, and in the second section (5102), the included angle between the second tangent surface (5132) and the height direction (Z) of the cutting device (5) gradually increases in a direction from the pointed top (5123) to the valley bottom (5124).

8. The cutting device (5) according to claim 1, characterized in that The base (511) has two opposite ends in a circumferential direction (C) of the cutting device (5), the two ends are arranged at intervals, the cutting part (512) is provided with the pointed top (5123) corresponding to a position of at least one end of the base (511), and the cutting part (512) is provided with the valley bottom (5124) corresponding to a position between the two ends of the base (511).

9. The cutting device (5) according to claim 8, characterized in that The cutting part (512) is provided with at least one pointed top (5123) corresponding to a position between the two ends of the base (511).

10. The cutting device (5) according to claim 9, characterized in that In the circumferential direction (C) of the cutting device (5), two pointed tops (5123) adjacent to the valley bottom (5124) are symmetrically arranged relative to a line connecting the valley bottom (5124) and the center of the cutting device (5).

11. The cutting device (5) according to claim 8, characterized in that The cutting part (512) further comprises a third tangent surface (5133) connected between the first tangent surface (5131) and an end surface (5120) of the cutting part (512) close to the pointed top (5123) and inclined relative to the first tangent surface (5131) towards a direction close to the base (511).

12. The cutting device (5) according to claim 2, characterized in that In a projection plane perpendicular to the height direction (Z) of the cutting device (5), a distance between the connecting edge (5134) and the cutting edge (5135) gradually decreases in a direction from the pointed top (5123) to the valley bottom (5124).

13. The cutting device (5) according to claim 1, characterized in that The base (511) and / or the cutting part (512) are provided with at least one hollow hole (5111), and a hole wall (5112) close to the base (511) side of the hollow hole (5111) is inclined towards a direction close to the base (511).

14. The cutting device (5) according to claim 1, characterized in that An end of the cutting part (512) away from the base (511) is arranged in a wave shape or a zigzag shape.

15. The cutting device (5) according to claim 1, characterized in that The second tangent surface (5132) is located on a side of the first tangent surface (5131) close to the base (511).

16. An automatic unpacking apparatus (100), characterized in that, The automatic unpacking equipment (100) comprises the cutting device (5) according to any one of claims 1-15.

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