Bag breaking knife structure

Abstract

The utility model discloses a bag breaking cutter structure, and belongs to the field of bag breaking cutters. The bag breaking knife structure comprises a mounting seat, a bag stabbing part and a bag cutting part, the bag cutting part is fixed to the mounting plane and comprises a plurality of cutting knife bodies which are mutually crossed at one point, each cutting knife body comprises a first cutting edge, and the first cutting edges deviate from the mounting plane and form an included angle smaller than 90 degrees; the bag stabbing part is mounted at the top of the bag scratching part and comprises a plurality of bayonet bodies, each bayonet body comprises a second cutting edge, and all the second cutting edges extend to one point to form upward sharp corners; the included angle between the first cutting edge and the second cutting edge is larger than 90 degrees and smaller than 180 degrees, and the sharp corners coincide with the intersection points, located on the cutting knife body, of the sharp corners. By limiting the matching position and the matching angle of the bag stabbing part and the bag scratching part, when the bag breaking knife makes contact with the ton bag, the bag stabbing part can firstly stabbing the ton bag to enable the ton bag to generate a notch, then the bag scratching part makes full contact with the ton bag and cuts the ton bag along the notch, the bag stabbing part and the bag scratching part are combined, and chippings and particles generated by the ton bag are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bag breaking knives, and more specifically to a bag breaking knife structure. Background Art

[0002] With the development of the new energy lithium battery industry, the production efficiency of lithium batteries needs to be improved urgently. There are many types of lithium battery formula materials, and the packaging ton bag materials used are also different.

[0003] The cutter structure used in the unpacking machines on the market currently has poor applicability. It is easy to produce a lot of debris when breaking open ton bags of some special materials, which increases the difficulty of cleaning foreign objects with the equipment. Especially when unpacking ton bags containing electrode dressings, the particles or debris generated during the crushing process of the ton bag body can easily contaminate the dressings in the bag, thereby affecting the service life of subsequent battery products. Therefore, in the lithium battery industry, the unpacking requirements need to be more stringent.

[0004] For example, a Chinese patent document (publication number: CN 113264253 A) provides a bag breaking mechanism and an automatic bag unpacking machine for ton bags, including a material drop bin, a blade assembly and a heating assembly, wherein the material drop bin is a cavity with an opening on one side; the blade assembly includes a connecting bracket and a blade, wherein the connecting bracket is connected to the material drop bin, and the blade is connected to the connecting bracket and faces the opening and forms an angle with the horizontal plane; the heating assembly contacts the blade and is electrically connected to an external power source to heat the blade after power is turned on. The device mainly combines hot melting for unpacking, but when applied to the lithium battery industry, inappropriate cutter temperature is very likely to damage the performance of the raw materials in the ton bag.

[0005] For the above problems, the related technologies do not provide effective solutions. Utility Model Content

[0006] In order to solve the problems that may exist in the related art, some embodiments of the present application provide a bag breaking knife structure, including: a mounting seat, including a mounting plane; a bag cutting portion, fixed to the mounting plane, including a plurality of knife bodies intersecting each other at a point, the knife body including a first cutting edge, the first cutting edge and the mounting plane being opposite and forming an angle less than 90°; a bag stabbing portion, installed on the top of the bag stabbing portion, including a plurality of bayonet bodies, the bayonet bodies including a second cutting edge, all of the second cutting edges extending to a point to form an upward sharp angle; wherein the angle between the first cutting edge and the second cutting edge is greater than 90° and less than 180°, and the sharp angle coincides with the intersection point of the knife bodies.

[0007] Furthermore, the piercing bag portion can be detachably mounted to the rowing bag portion.

[0008] Furthermore, the stab bag portion includes four bayonet bodies, and the backs of all the bayonet bodies are connected; the stab bag portion is in an X shape.

[0009] Furthermore, the bag-cutting portion includes four cutting blades, one end of the first cutting edge is opposite to one end of the second cutting edge, the bag-cutting portion is X-shaped and has a convex center, a support column is formed in the center of the bag-cutting portion, and the bag-piercing portion is located at the top of the support column.

[0010] Furthermore, a weight-reducing groove is provided in the middle of the cutter body. The weight-reducing groove is a right triangle, and the hypotenuse is parallel to the extension direction of the second cutting edge.

[0011] Furthermore, the angle between the first cutting edge and the mounting plane is 10° to 45°.

[0012] Furthermore, the included angle between the first cutting edge and the second cutting edge is 100 to 130°.

[0013] Furthermore, it also includes a plurality of heating elements and temperature sensing elements for controlling the start and stop of the heating elements, and the heating elements are arranged in the paddling bag part.

[0014] Furthermore, one of the heating elements is located at the bottom of the thorn bag portion.

[0015] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0016] The bag-breaking knife structure of the present application limits the matching position and matching angle of the bag-piercing part and the bag-slicing part. When the bag-breaking knife comes into contact with the ton bag, the bag-piercing part can first pierce the ton bag to create a gap in the ton bag, and then the bag-slicing part can fully contact and cut along the gap. The bag-piercing part and the bag-slicing part are combined with each other to reduce the debris and particles generated by the ton bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the bag breaking knife structure according to an embodiment of the present application;

[0019] Figure 2 It is a schematic diagram of the bag rowing part structure according to an embodiment of the present application.

[0020] Figure 3 It is a schematic diagram of the structure of the thorn bag part according to an embodiment of the present application.

[0021] Description of labels:

[0022] 100, mounting seat; 110, mounting plane;

[0023] 200, pocket cutting part; 210, cutting cutter body; 220, first cutting edge; 230, supporting column; 240, weight reduction groove;

[0024] 300, bayonet bag; 310, bayonet body; 320, second cutting edge; 330, sharp corner. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein.

[0027] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to express other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0028] like Figures 1 to 3 As shown, this embodiment provides a bag-breaking knife structure for cutting open a ton bag. The bag-breaking knife structure includes a mounting seat 100, a bag-cutting portion 200 and a bag-piercing portion 300. The mounting seat 100 includes a mounting plane 110, which serves as a supporting member of the bag-breaking knife structure.

[0029] like Figure 2As shown, the bag-slicing part 200 is fixed to the mounting plane 110, and includes a plurality of slicer bodies 210 intersecting each other at a point, and the slicer body 210 includes a first cutting edge 220, and the first cutting edge 220 is opposite to the mounting plane 110 and forms an angle less than 90. Preferably, the angle between the first cutting edge 220 and the mounting plane 110 is 10° to 45°, such as 13°, 20°, 25°, 30° or 42°, to ensure the lateral operating range of the slicer body 210.

[0030] like Figure 3 As shown, the bag piercing unit 300 is installed on the top of the bag cutting unit 200, and includes a plurality of bayonet bodies 310, the bayonet bodies 310 include second cutting edges 320, and all second cutting edges 320 extend to one point to form an upward sharp corner 330. Specifically, the cutting edge, as a unit that mainly contacts the ton bag, has a thickness less than other positions of the blade body.

[0031] Among them, the angle between the first cutting edge 220 and the second cutting edge 320 is greater than 90 degrees and less than 180°, for example 95°, 100°120°, 135° or 155°, etc. Preferably, the angle between the first cutting edge 220 and the second cutting edge 320 is 100 to 130°, so that the sharp corner 330 is sharp enough and has a certain strength, and the sharp corner 330 is located at the intersection of the cutting body 210 and coincides with each other.

[0032] It is worth noting that the angles in this embodiment are all the minimum angles between lines, between planes, or between a line and a plane.

[0033] In the related technology, if only the bag-slicing method is used to break the bag, and the ton bag has a certain toughness and tension, when the knife body comes into contact with the ton bag, it will squeeze the ton bag to excessive deformation before breaking it. As the bag-breaking knife is used for a longer time, the blade becomes blunter, and the ton bag is deformed more, resulting in more damage to the ton bag when it is broken, and impurities are more likely to mix into the raw materials. If only the bag-slicing method is used to break the bag, although the ton bag can be opened quickly, the opening is generally small, and the material in the ton bag will expand when it flows out of the gap, thereby further deforming and tearing, causing problems that affect the cleanliness of the raw materials, and the discharge efficiency is also difficult to guarantee.

[0034] The bag-breaking knife structure of the present application limits the matching position and matching angle of the bag-piercing part 300 and the bag-slicing part 200. When the bag-breaking knife comes into contact with the ton bag, the bag-piercing part 300 can first pierce the ton bag to create a gap in the ton bag, and then the bag-slicing part 200 can fully contact and slice along the gap. The bag-piercing part 300 and the bag-slicing part 200 are combined with each other to reduce the debris and particles generated by the ton bag.

[0035] Since the bag-piercing part 300 relies on the sharp corner 330 to break the bag, the wear and tear produced thereon is relatively serious. Preferably, the bag-piercing part 300 is detachably mounted to the bag-slashing part 200, such as by threaded connection, snap connection, or disassembly snap connection, so that the user can easily replace the bag-piercing part 300 to ensure bag-breaking efficiency.

[0036] Furthermore, since the bag-piercing portion 300 bears the main force when the bag is broken, high-strength wear-resistant materials can be used to extend its service life, and the blade of the bag-slicing portion 200 only needs to continue to expand the incision along the incision made by the bag-piercing portion 300, and thus bears less force. Therefore, it can use ordinary tool materials to control costs.

[0037] Optional, such as Figure 1 , Figure 3 As shown, the stab bag portion 300 includes four bayonet bodies 310, and the backs of all the bayonet bodies 310 are connected; the stab bag portion 300 is in an X shape.

[0038] Further, combined with Figure 2 The bag-cutting part 200 includes four cutting blades 210, one end of the first cutting edge 220 is opposite to one end of the second cutting edge 320. Specifically, the cutting blade 210 and the bayonet body 310 are both X-structures, the bayonet body 310 is located at the center of the cutting blade 210, and the first cutting edge 220 extends along the second cutting edge 320, which cooperate with each other to enable the bag-breaking knife structure to smoothly cut the ton bag.

[0039] like Figure 2 As shown, the bag-slitting portion 200 is X-shaped and has a bulge in the center. A support column 230 is formed in the center of the bag-slitting portion 200. The bag-piercing portion 300 is located on the top of the support column 230 to increase the structural strength of the bag-piercing portion 300. More specifically, since the main function of the bag-piercing portion 300 is to open the ton bag, the outer edge of the bag-piercing portion 300 may not exceed the support column 230 to simplify the structure.

[0040] like Figure 2 As shown, there is a weight-reducing groove 240 in the middle of the cutting blade body 210. The weight-reducing groove 240 is a right triangle, and its hypotenuse is parallel to the extension direction of the second cutting edge 320. It reduces its weight while ensuring the strength of the cutting blade body 210, making it convenient for the user to move the bag breaking knife structure to a suitable position for bag breaking.

[0041] Optionally, the bag-breaking knife structure also includes a plurality of heating elements and temperature sensing elements for controlling the start and stop of the heating elements, and the heating elements are arranged in the bag-cutting part 200. The temperature sensing element is used at least to detect the temperature of the knife body. When the knife body reaches a specified temperature, the heating element is disconnected. When the knife body is lower than another specified temperature, the heating element is operated, so that the knife body maintains a suitable temperature to prevent the knife body from overheating and damaging the properties of the raw materials or the knife body temperature is insufficient to break the bag more efficiently. The bag-breaking knife structure cuts the ton bag and heats the cut of the ton bag to reduce the generation of ton bag debris, effectively reducing the contamination of the raw materials in the ton bag by foreign matter.

[0042] It is worth noting that the temperature sensing element here can control the heating element directly or indirectly. The indirect control is specifically manifested in that the temperature sensing element is electrically connected to the controller. After the temperature sensing element feeds back the temperature to the controller, the controller controls the start and stop of the heating element.

[0043] Specifically, the heating element is embedded in the blade body and outside the cutting edge to prevent interference with the cutting edge. The heating element may be a resistance heater. Preferably, since the piercing bag portion 300 and the slashing bag portion 200 are closely connected, the temperature of the slashing bag portion 200 can be quickly transferred to the piercing bag portion 300, so the piercing bag portion 300 may not be installed with a heating element and a temperature sensing element to prevent affecting the structural strength and piercing bag efficiency of the piercing bag portion 300. More specifically, one of the heating elements is located at the bottom of the piercing bag portion 300 to ensure the working temperature of the piercing bag portion 300.

[0044] In this application, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bag breaking knife structure, characterized in that: include: A mounting base, including a mounting plane; A bag-slicing part, fixed to the mounting plane, comprising a plurality of cutting blades intersecting each other at a point, wherein the cutting blades comprise a first cutting edge, and the first cutting edge is away from the mounting plane and forms an angle less than 90°; The stabbing bag part is installed on the top of the pocket-slicing part, and includes a plurality of bayonet bodies, wherein the bayonet bodies include second cutting edges, and all the second cutting edges extend to a point to form an upward sharp angle; Wherein, the included angle between the first cutting edge and the second cutting edge is greater than 90° and less than 180°, and the sharp angles coincide with the intersection of the cutting blade body.

2. The bag breaking knife structure according to claim 1, characterized in that: The piercing bag portion is detachably mounted to the paddling bag portion.

3. The bag breaking knife structure according to claim 1, characterized in that: The stab bag portion comprises four bayonet bodies, and the backs of all the bayonet bodies are connected; the stab bag portion is in an X shape.

4. The bag breaking knife structure according to claim 3, characterized in that: The bag-cutting part includes four cutting blades, one end of the first cutting edge is opposite to one end of the second cutting edge, the bag-cutting part is X-shaped and has a convex center, a support column is formed in the center of the bag-cutting part, and the bag-piercing part is located at the top of the support column.

5. The bag breaking knife structure according to claim 4, characterized in that: A weight-reducing groove is provided in the middle of the cutter body. The weight-reducing groove is a right triangle, and the hypotenuse of the groove is parallel to the extension direction of the second cutting edge.

6. The bag breaking knife structure according to claim 1, characterized in that: The included angle between the first cutting edge and the mounting plane is 10° to 45°.

7. The bag breaking knife structure according to claim 1, characterized in that: The included angle between the first cutting edge and the second cutting edge is 100 to 130°.

8. The bag breaking knife structure according to any one of claims 1 to 7, characterized in that: It also includes a plurality of heating elements and a temperature sensing element for controlling the start and stop of the heating elements, wherein the heating elements are arranged in the rowing bag portion.

9. The bag breaking knife structure according to claim 8, characterized in that: One of the heating elements is located at the bottom of the thorn bag portion.

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