Cutter, cutter device and material dicing forming method

Abstract

The invention discloses a cutter, a cutter device and a material dicing forming method, the cutter comprises an inner cavity and a flexible wall, at least part of the inner cavity is surrounded by the flexible wall, and the flexible wall is suitable for deviating from the inner cavity to deform when the pressure of the inner cavity is increased and is suitable for being recovered when the pressure of the inner cavity is reduced. According to the technical scheme, by means of deformation of the flexible wall, lateral extrusion of the cut blocks can be achieved, the mechanical occlusal force and cohesive force between particles on the side faces of the cut blocks are enhanced, a stable structure is formed, vibration in the follow-up conveying process is effectively resisted, the cut mark retention rate is greatly increased, and the service life of the cut blocks is prolonged. The collapse of the blocks is effectively prevented, and the density gradient in the blocks can be reduced by laterally extruding the blocks, so that the density of the material is more uniform, and the subsequent uniform sintering of the material is more facilitated.

Description

Technical Field

[0001] This invention relates to the field of battery material production technology, and in particular to a cutter, a cutter device, and a method for cutting and forming materials into blocks. Background Technology

[0002] In the sintering process of ternary cathode materials, the powder material needs to be loaded into a sagger and leveled before being cut into blocks to increase the contact area between the material and air, ensuring a uniform and complete sintering reaction. Traditional cutting processes use mechanical cutting tools, but the resulting cut marks have poor stability. After cutting, the sidewalls of the powder blocks bear weak gravity, and the internal particle bonding is weak. During the subsequent transport of the sagger into the kiln, equipment vibration can easily cause the cut marks to blur or even the blocks to collapse, disrupting the pre-designed air channels and leading to uneven sintering. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art. To this end, a first aspect of the present invention provides a cutting tool.

[0004] To achieve the above objectives, the present invention discloses a cutter comprising an inner cavity and a flexible wall, wherein at least a portion of the inner cavity is surrounded by the flexible wall, the flexible wall being adapted to deform away from the inner cavity when the pressure in the inner cavity increases, and adapted to recover when the pressure in the inner cavity decreases, and at least a portion of the side surface of the cutter along its thickness direction is formed by the flexible wall.

[0005] In some embodiments of the present invention, the cutter includes a blade body, the blade body includes a cutting edge portion, the cutting edge portion has a cutting edge, and the inner cavity is disposed on the side of the cutting edge portion opposite to the cutting edge.

[0006] In some embodiments of the present invention, the cutter includes a flexible body disposed on the side of the blade portion away from the blade edge, the inner cavity is formed inside the flexible body, and the flexible body has two opposite sides along the thickness direction of the cutter, which are the flexible walls.

[0007] In some embodiments of the present invention, the blade body includes a first support portion and a second support portion, the first support portion and the second support portion are respectively disposed on the side of the blade portion away from the blade edge, and the first support portion and the second support portion are alternately arranged along the extension direction of the blade edge, and the flexible body is connected between the first support portion and the second support portion.

[0008] In some embodiments of the present invention, the first support portion and the second support portion are respectively provided with slots, and the flexible body is embedded between the slots of the first support portion and the slots of the second support portion.

[0009] In some embodiments of the present invention, the flexible body is detachably connected to the blade body.

[0010] In some embodiments of the present invention, the flexible walls are respectively provided on opposite sides of the blade body along the thickness direction of the cutter, and the blade body and the flexible walls on opposite sides together enclose the inner cavity.

[0011] In some embodiments of the present invention, the blade body includes a first support portion, a second support portion, and a third support portion. The first support portion and the second support portion are respectively disposed on the side of the blade portion away from the blade edge, and the first support portion and the second support portion are alternately arranged along the extension direction of the blade edge. The third support portion is disposed between the first support portion and the second support portion. The flexible walls on opposite sides, together with the blade portion, the first support portion, the second support portion, and the third support portion, enclose the inner cavity.

[0012] In some embodiments of the present invention, the blade body is welded to the flexible wall.

[0013] In some embodiments of the present invention, the flexible wall is made of metal.

[0014] In some embodiments of the invention, the cutter includes a communication port communicating with the inner cavity, the inner cavity being adapted to receive fluid through the communication port to increase pressure, and adapted to discharge fluid through the communication port to decrease pressure.

[0015] In some embodiments of the invention, the inner cavity is adapted to receive and discharge fluid through the same communication port.

[0016] A second aspect of the present invention discloses a cutting device, the cutting device comprising the above-mentioned cutting blade, wherein a plurality of the cutting blades are arranged alternately to form a cutting blade group.

[0017] In some embodiments of the present invention, the cutting device includes a solenoid valve, the solenoid valve including a first interface, a second interface and a third interface, the first interface being adapted to communicate with a fluid supply source, the second interface communicating with the inner cavity of each of the cutters, and the third interface communicating with the outside. The solenoid valve is adapted to connect the first interface to the second interface and close the third interface when it is in the first state; The solenoid valve is adapted to connect the second interface to the third interface and close the first interface when in the second state.

[0018] A third aspect of the present invention discloses a method for cutting and forming materials into blocks, which, based on the above-mentioned cutting device, includes the following steps: The material in the sagger is vibrated and leveled; Control the cutter to insert into the material until the preset position; The cutter is controlled to remain at the preset position for a first time, and fluid is simultaneously controlled to fill the inner cavity; After the first time period ends, the fluid is controlled to drain from the inner cavity and the cutter is controlled to reset.

[0019] In some embodiments of the present invention, the first time is 50ms to 500ms.

[0020] The technical solution of this invention can achieve lateral compression of the cut blocks by deforming the flexible wall, thereby enhancing the mechanical interlocking force and cohesion between the particles on the side of the cut blocks, forming a stable structure, effectively resisting vibration during subsequent conveying, greatly improving the cut mark retention rate, effectively preventing the cut blocks from collapsing, and the lateral compression of the cut blocks can reduce the density gradient inside the cut blocks, making the density of the material more uniform, which is more conducive to the uniform sintering of the material in the subsequent process.

[0021] Other advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the cutter in some embodiments; Figure 2 for Figure 1 A cross-sectional view of the cutter shown; Figure 3 This is a schematic diagram of another cutter in some embodiments; Figure 4 for Figure 3 The enlarged view marked A in the middle; Figure 5 This is a schematic diagram of a cutting tool in some embodiments; Figure 6 for Figure 5 A cross-sectional view of the cutter shown; Figure 7 for Figure 5 An exploded view of the cutter shown; Figure 8 This is a schematic diagram of the cutting device in some embodiments; Figure 9 This is a schematic diagram of the cutting device inserting material in some embodiments (the cutter is in the restored state). Figure 10 This is a schematic diagram of the cutting device inserting material in some embodiments (the cutter is in an expanded state).

[0023] Figure label: Cutting blade 100, blade body 110, blade edge 111, blade 1111, first support part 112, second support part 113, third support part 114, slot 115, flexible body 120, flexible wall 121, inner cavity 130, connecting port 140, solenoid valve 200, and sagger 300.

[0024] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The first aspect of the present invention discloses a cutter 100, which, in some embodiments, is combined with Figure 1 and Figure 2 as well as Figures 8 to 10 As shown, the cutter 100 includes an inner cavity 130 and a flexible wall 121. At least a portion of the inner cavity 130 is surrounded by the flexible wall 121. The flexible wall 121 is adapted to deform away from the inner cavity 130 when the pressure in the inner cavity 130 increases, and is adapted to recover when the pressure in the inner cavity 130 decreases. At least a portion of the side of the cutter 100 along its thickness direction is formed by the flexible wall 121.

[0028] The cutter 100 has a flat structure and is typically driven by a drive mechanism to insert into the material in the crucible 300, thereby cutting the material into blocks. It is then driven by the same drive mechanism to remove it from the crucible 300. In the prior art, after the cutter is removed from the crucible 300, the cut marks are unstable, the sidewalls of the blocks (the blocky material formed after being cut by the cutter 100) bear weak gravity, and the internal interparticle bonding is weak, making them susceptible to vibration, which can lead to blurred cut marks or even block collapse.

[0029] To address the aforementioned issues, in this embodiment, the cutter 100 includes an inner cavity 130 and a flexible wall 121. At least a portion of the inner cavity 130 is enclosed by the flexible wall 121. The inner cavity 130 is a region surrounded by a solid structure, and the flexible wall 121 constitutes at least a portion of the solid structure surrounding the inner cavity 130.

[0030] The so-called flexible wall 121 is a structure that can deform under force and return to its original shape after the force is removed. For example, the flexible wall 121 can be made of metal, manufactured as a thin metal sheet. The metal sheet can deform to a certain extent under force and return to its original shape when the force is removed. With this design, when the pressure in the inner cavity 130 increases, the flexible wall 121 deforms away from the inner cavity 130, simultaneously causing the inner cavity 130 to expand. When the pressure in the inner cavity 130 decreases, the flexible wall 121 returns to its original shape, simultaneously causing the inner cavity 130 to shrink. The deformation of the flexible wall 121 can be controlled by controlling the pressure in the inner cavity 130. It can be understood that the inner cavity 130 can either tend to contract infinitely before expansion or occupy a certain visible space before expansion.

[0031] Since the flexible wall 121 constitutes at least a portion of the solid structure surrounding the inner cavity 130, and at least a portion of the side of the cutter 100 in the thickness direction is composed of the flexible wall 121, when the cutter 100 is inserted into the material, the flexible wall 121 deforms away from the inner cavity 130, thus causing the cutter 100 to expand in its thickness direction, thereby achieving lateral compression of the cut block. This can enhance the mechanical interlocking force and cohesion between the side particles of the cut block, forming a stable structure that effectively resists vibration during subsequent conveying, greatly improving the cut mark retention rate, preventing the cut block from collapsing, and reducing the density gradient inside the cut block through lateral compression, making the material density more uniform and more conducive to the uniform sintering of the material in the subsequent process.

[0032] Since the cutter 100 has sides located on opposite sides along its thickness direction, at least a portion of the sides of the cutter 100 along its thickness direction is formed by a flexible wall 121. This can be either a first option where at least a portion of one side of the cutter 100 is formed by a flexible wall 121, or a second option where at least a portion of one side of the cutter 100 is formed by a flexible wall 121, and at least a portion of the other side of the cutter 100 is also formed by a flexible wall 121. In the first option, the cutter 100 actively forms lateral compression of the cut piece in one direction, while in the second option, the cutter 100 actively forms lateral compression of the cut piece in two directions. When multiple cutters 100 are arranged alternately to form a cutter group, the second option provides a better cutting effect compared to the first option.

[0033] For example, multiple cutters 100 are arranged alternately to form a cutter group, and the cutters 100 adopt the first scheme, so as to... Figure 8 With the orientation shown as a reference, in two adjacent cutters 100, the cutter 100 on the left deforms to the right through the flexible wall 121, thereby actively squeezing the cut block on the right side laterally. Although the cutter 100 on the right cannot actively squeeze the cut block on the left side through the flexible wall 121, the right cutter 100 also squeezes the cut block on the left side to a certain extent due to the stopping effect of the right cutter 100 and the principle that forces are mutual.

[0034] For example, multiple cutters 100 are arranged alternately to form a cutter group. The cutters 100 adopt the second scheme, so as to... Figure 8 The orientation shown is for reference. In two adjacent cutters 100, the cutter 100 on the left deforms to the right through the flexible wall 121, thereby actively squeezing the cut block on the right side. The cutter 100 on the right deforms to the left through the flexible wall 121, thereby actively squeezing the cut block on the left side, thus improving the cutting effect.

[0035] In some embodiments, combined with Figure 1 and Figure 2 As shown, the cutter 100 includes a blade body 110, the blade body 110 includes a blade portion 111, the blade portion 111 has a blade 1111, and an inner cavity 130 is provided on the side of the blade portion 111 away from the blade 1111.

[0036] The cutting edge 111 is a rigid structure. The cutting edge 1111 is the structure that first contacts the material when the cutter 100 is inserted into the material. The cutting edge 1111 is usually a long and sharp edge (relative to other positions of the cutting edge 111). The inner cavity 130 is located on the side of the cutting edge 111 away from the cutting edge 1111. Since at least part of the inner cavity 130 is surrounded by a flexible wall 121, when the cutter 100 is inserted into the material, the cutter 100 first contacts the material and cuts it through the cutting edge 1111. This can reduce the wear of the material on the flexible wall 121.

[0037] In some embodiments, combined with Figure 1 and Figure 2 As shown, the cutter 100 includes a flexible body 120, which is disposed on the side of the blade portion 111 away from the blade 1111. An inner cavity 130 is formed inside the flexible body 120, and the two opposite sides of the flexible body 120 along the thickness direction of the cutter 100 are flexible walls 121.

[0038] The flexible body 120 can be manufactured separately to form an inner cavity 130. For example, the flexible body 120 is connected and fixed together by two flexible walls 121. Specifically, the edge of the first flexible wall 121 is sealed to the edge of the second flexible wall 121, so that an inner cavity 130 can be formed between the two flexible walls 121 (at this time, the two flexible walls 121 can fit together, which means that the inner cavity 130 tends to be infinitely compressed). When the flexible body 120 is installed on the blade body 110, the flexible body 120 is located on the side of the blade portion 111 away from the blade 1111. The first flexible wall 121 constitutes one side of the cutter 100 in the thickness direction, and the second flexible wall 121 constitutes the other side of the cutter 100 in the thickness direction.

[0039] In some embodiments, combined with Figure 1 , Figure 2 and Figure 3 As shown, the blade body 110 includes a first support portion 112 and a second support portion 113. The first support portion 112 and the second support portion 113 are respectively disposed on the side of the blade portion 111 away from the blade 1111, and the first support portion 112 and the second support portion 113 are arranged alternately along the extension direction of the blade 1111. The flexible body 120 is connected between the first support portion 112 and the second support portion 113.

[0040] In this embodiment, the blade portion 111, the first support portion 112, and the second support portion 113 are all rigid structures and can be integrally formed. When the flexible body 120 is installed on the blade body 110, the flexible body 120 is connected between the first support portion 112 and the second support portion 113. The first support portion 112 and the second support portion 113 effectively support the flexible body 120. There are various ways to connect the flexible body 120 to the first support portion 112 and the second support portion 113, as long as it can fix the flexible body 120 to the blade body 110, such as screw connection, snap-fit ​​connection, clamping, etc.

[0041] In some embodiments, combined with Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the first support part 112 and the second support part 113 are respectively provided with slots 115, and the flexible body 120 is embedded between the slots 115 of the first support part 112 and the slots 115 of the second support part 113.

[0042] The slot 115 of the first support part 112 is open to the second support part 113, and the slot 115 of the second support part 113 is open to the first support part 112. The flexible body 120 can be inserted into the slot 115 from the end of the first support part 112 and the second support part 113 that is away from the blade part 111, thereby facilitating the initial assembly and positioning of the flexible body 120 and laying the foundation for further fastening.

[0043] The flexible body 120 is prone to wear after prolonged use and needs to be replaced in time. Therefore, the flexible body 120 is detachably connected to the blade body 110. That is, the flexible body 120 can be installed on the blade body 110 or removed from the blade body 110, which facilitates the replacement of the new flexible body 120 and ensures the cutting effect on the material.

[0044] For example, based on the first support portion 112 and the second support portion 113, the flexible body 120 is embedded between the slot 115 of the first support portion 112 and the slot 115 of the second support portion 113, and then locked with screws. When disassembling, the screws are loosened first, and then the flexible body 120 is pulled out from between the slot 115 of the first support portion 112 and the slot 115 of the second support portion 113.

[0045] The structure of the cutter 100 can also adopt the following scheme: In some embodiments, combined with Figure 5 and Figure 6 As shown, flexible walls 121 are provided on opposite sides of the blade 110 along the thickness direction of the cutter 100, and the blade 110 and the flexible walls 121 on opposite sides together enclose the inner cavity 130.

[0046] Specifically, along the thickness direction of the cutter 100, the blade body 110 has a certain thickness and is in the form of a frame structure. One side of the blade body 110 is connected to the flexible wall 121, and the other side is also connected to the flexible wall 121. In this way, the blade body 110 and the flexible walls 121 on both sides can jointly enclose the inner cavity 130. When the pressure in the inner cavity 130 increases, the flexible wall 121 can also deform outward.

[0047] In some embodiments, combined with Figure 5 , Figure 6 and Figure 7 As shown, the blade body 110 includes a first support portion 112, a second support portion 113, and a third support portion 114. The first support portion 112 and the second support portion 113 are respectively disposed on the side of the blade portion 111 away from the blade 1111, and the first support portion 112 and the second support portion 113 are arranged alternately along the extension direction of the blade 1111. The third support portion 114 is disposed between the first support portion 112 and the second support portion 113. The flexible walls 121 on opposite sides, together with the blade portion 111, the first support portion 112, the second support portion 113, and the third support portion 114, enclose the inner cavity 130.

[0048] See Figure 7 As shown, the blade portion 111 extends in the front-to-back direction. A first support portion 112 is located on the side of the blade portion 111 opposite to the blade 1111 and extends in the vertical direction. A second support portion 113 is located on the side of the blade portion 111 opposite to the blade 1111 and extends in the vertical direction. The first support portion 112 and the second support portion 113 are arranged alternately in the front-to-back direction (the direction of extension of the blade 1111). A third support portion 114 extends in the front-to-back direction. The front end of the third support portion 114 is connected to the top end of the first support portion 112. The rear end of the third support portion 114... The end is connected to the top of the second support part 113, so that the blade body 110 has a frame structure. The flexible wall 121 on the left is connected to the left side of the blade part 111, the first support part 112, the second support part 113, and the third support part 114, and the flexible wall 121 on the right is connected to the right side of the blade part 111, the first support part 112, the second support part 113, and the third support part 114. In this way, the flexible walls 121 on the left and right sides, the blade part 111, the first support part 112, the second support part 113, and the third support part 114 together form the inner cavity 130.

[0049] The flexible wall 121 needs to be sealed to the blade body 110 to prevent pressure loss in the inner cavity 130 through the flexible wall 121 and the blade body 110. For this purpose, in some embodiments, the flexible wall 121 is welded to the blade body 110. Based on the welding process, both the connection and fixation between the flexible wall 121 and the blade body 110 can be achieved, as well as the sealing between the flexible wall 121 and the blade body 110. For example, one side of the flexible wall 121 is welded to the blade part 111, the first support part 112, the second support part 113, and the third support part 114 on one side of the blade body 110, and the other side of the flexible wall 121 is welded to the blade part 111, the first support part 112, the second support part 113, and the third support part 114 on the other side of the blade body 110. In this way, the flexible wall 121 can be installed on the blade body 110, and the sealed connection between the flexible wall 121 and the blade body 110 can be achieved.

[0050] For example, both the flexible wall 121 and the blade body 110 are made of metal, and a sealed connection between them is achieved through welding. For instance, the blade body 110 is made of stainless steel, and the flexible wall 121 is made of beryllium copper alloy. Of course, other materials can also be used for the flexible wall 121 and the blade body 110, which will not be elaborated here. In addition, in some embodiments, a sealing layer can also be provided between the flexible wall 121 and the blade body 110 to form a seal. The seal formed by the sealing layer is suitable for connections when the flexible wall 121 is made of non-metallic material.

[0051] In some embodiments, combined with Figure 1 As shown, the cutter 100 includes a communication port 140 communicating with the inner cavity 130. The inner cavity 130 is adapted to receive fluid through the communication port 140 to increase the pressure, and is also adapted to discharge fluid through the communication port 140 to decrease the pressure. The fluid includes, but is not limited to, liquids (such as water) and gases (such as compressed air). A fluid at a certain pressure is introduced into the inner cavity 130 to increase the pressure of the inner cavity 130, causing the flexible wall 121 to deform. The fluid is discharged from the inner cavity 130 to decrease the pressure of the inner cavity 130, allowing the flexible wall 121 to recover. In this way, the pressure of the inner cavity 130 can be controlled and adjusted.

[0052] In some embodiments, combined with Figure 1 and Figure 8 As shown, the inner cavity 130 is adapted to receive and discharge fluid through the same connecting port 140. That is, when it is necessary to increase the pressure of the inner cavity 130, the fluid is injected into the inner cavity 130 through the connecting port 140, and when it is necessary to decrease the pressure of the inner cavity 130, the fluid in the inner cavity 130 is discharged through the same connecting port 140. This reduces the number of connecting ports 140, which helps to simplify the structure and optimize the pipeline layout.

[0053] A second aspect of the present invention discloses a cutting device, which, in some embodiments, is combined with Figures 1 to 10As shown, the cutting device includes the aforementioned cutter 100. The cutter 100 includes an inner cavity 130 and a flexible wall 121. At least a portion of the inner cavity 130 is surrounded by the flexible wall 121. The flexible wall 121 is adapted to deform away from the inner cavity 130 when the pressure in the inner cavity 130 increases, and is adapted to recover when the pressure in the inner cavity 130 decreases. At least a portion of the side of the cutter 100 along its thickness direction is formed by the flexible wall 121. Multiple cutters 100 are arranged alternately to form a cutter group. For example, multiple cutters 100 are fixed to a bracket and arranged alternately. Through the formation of the cutter group, the material can be cut into pieces in one operation of the cutter group without the need to control the cutter 100 to repeatedly insert into the material. In this embodiment, each cutter in the cutting device forms at least a portion of the solid structure surrounding the inner cavity 130 due to the flexible wall 121, and at least a portion of the side of the cutter 100 in the thickness direction is formed by the flexible wall 121. Therefore, when the cutter 100 is inserted into the material, the flexible wall 121 deforms away from the inner cavity 130, causing the cutter 100 to expand in its thickness direction, thereby achieving lateral compression of the cut block. This can enhance the mechanical interlocking force and cohesion between the particles on the side of the cut block, forming a stable structure, effectively resisting vibration during subsequent conveying, greatly improving the cut mark retention rate, preventing the cut block from collapsing, and reducing the density gradient inside the cut block through lateral compression, making the material density more uniform, which is more conducive to the uniform sintering of the material in the subsequent process.

[0054] In some embodiments, the cutting device includes a solenoid valve 200, which includes a first interface, a second interface and a third interface. The first interface is adapted to communicate with a fluid supply source, the second interface is communicated with the inner cavity 130 of each cutter 100 (e.g., the second interface is communicated with the communication port 140 of each cutter 100), and the third interface is communicated with the outside. The solenoid valve 200 has two operating states: a first state and a second state. In the first state, the solenoid valve 200 connects the first and second ports while closing the third port. This allows fluid from the fluid supply source to enter the inner cavity 130 of each cutter 100, causing the flexible wall 121 to deform. In the second state, the solenoid valve 200 connects the second and third ports while closing the first port. This allows fluid in the inner cavity 130 to exit from the inner cavity 130 of each cutter 100, restoring the flexible wall 121 to its original shape. The solenoid valve 200 facilitates the entry and exit of fluid into and from the inner cavity 130. Optionally, the solenoid valve 200 is a two-position three-way solenoid valve.

[0055] A third aspect of the present invention discloses a method for cutting and forming materials into blocks, based on the aforementioned cutting device. The cutting device includes the aforementioned cutting blade 100. The cutting blade 100 includes an inner cavity 130 and a flexible wall 121. At least a portion of the inner cavity 130 is surrounded by the flexible wall 121. The flexible wall 121 is adapted to deform away from the inner cavity 130 when the pressure in the inner cavity 130 increases, and is adapted to recover when the pressure in the inner cavity 130 decreases. At least a portion of the side of the cutting blade 100 along its thickness direction is formed by the flexible wall 121. Multiple cutting blades 100 are arranged alternately to form a cutting blade group. For example, multiple cutting blades 100 are fixed to a support and arranged alternately. By forming the cutting blade group, the material can be cut into blocks in one operation of the cutting blade group without the need to control the cutting blade 100 to repeatedly insert into the material.

[0056] The material cutting and shaping method includes the following steps: S1: Level the material in the sagger 300.

[0057] The material is filled into the sagger 300, which is connected to the vibration mechanism. The vibration mechanism is connected to the control system, which controls the operation of the vibration mechanism. The vibration mechanism transmits vibration to the sagger 300, thereby making the material flat and compact.

[0058] S2: Control the cutter 100 to insert into the material until the preset position.

[0059] The cutting blade assembly is connected to the lifting mechanism, which is connected to the control system. The control system controls the lifting mechanism to drive the cutting blade assembly to descend, so that the cutting blade 100 inserts into the material until the preset position is reached. The preset position can be determined based on the relative position of the sagger 300 and the cutting blade assembly, and based on the descending stroke of the cutting blade assembly. When the cutting blade 100 is inserted into the preset position, the material can be cut into pieces.

[0060] S3: Control the cutter 100 to stay at the preset position for a first time, and simultaneously control the fluid to fill the inner cavity 130.

[0061] When the cutter 100 is in a preset position, the control system controls the cutter 100 to stay in the preset position for a first time. For example, during the first time, the drive mechanism stops driving the cutter group. At the same time, the control system controls the fluid supply source to input fluid into the inner cavity 130 of each cutter 100, thereby increasing the pressure in the inner cavity 130, causing the flexible wall 121 to deform and exert lateral pressure on the cut block, thus shaping the cut block.

[0062] Taking the inner cavity 130 receiving compressed air through the solenoid valve 200 as an example, when the cutter 100 is in a preset position, the control system controls the solenoid valve 200 to switch from the second state to the first state. At this time, the first interface is connected to the second interface, while the third interface is closed. Compressed air enters the solenoid valve 200 through the first interface from the fluid supply source and is discharged through the second interface, thereby filling the inner cavity 130 of each cutter 100. The pressure in the inner cavity 130 of the cutter 100 increases, causing the flexible wall 121 to deform away from the inner cavity 130, thereby forming a lateral compression on the cut block.

[0063] S4: After the first time ends, control the fluid to drain from the inner cavity 130 and control the cutter 100 to reset.

[0064] After the first time is over, the control system controls the fluid to be discharged from the inner cavity 130. At this time, the flexible wall 121 is restored, and then the control drive mechanism drives the cutter group to rise, so that the cutter 100 leaves the material.

[0065] Taking the discharge of compressed air from the inner cavity 130 through the solenoid valve 200 as an example, after the first time ends, the control system controls the solenoid valve 200 to switch from the first state to the second state. At this time, the first interface is closed, and the compressed air cannot enter the solenoid valve 200 through the first interface. The second interface is connected to the third interface. The compressed air in the inner cavity 130 enters the solenoid valve 200 through the second interface and is discharged to the outside through the third interface. The pressure in the inner cavity 130 decreases, thereby restoring the flexible wall 121.

[0066] By adjusting the pressure value and action time (first time) of the inner cavity 130 through the control system, the flexible wall 121 can produce controllable deformation, which can flexibly adapt to powder materials with different viscosities, particle sizes and flowability, and achieve the optimization of process parameters.

[0067] In some embodiments, the first time interval is 50ms to 500ms. The first time interval includes, but is not limited to, 50ms, 100ms, 150ms, 200ms, 300ms, 400ms, or 500ms. This hardly prolongs the production cycle time and is easy to integrate into existing automated production lines. Especially when the fluid supply source provides gas and works in conjunction with the solenoid valve 200, it can achieve a rapid response to the pressure regulation of the inner cavity 130 and achieve instantaneous compaction of the cut blocks.

[0068] The material cutting and forming method in this application involves the deformation of the flexible wall 121 away from the inner cavity 130, which causes the cutter 100 to expand in its thickness direction, thereby achieving lateral compression of the cut block. This enhances the mechanical interlocking force and cohesion between the side particles of the cut block, forming a stable structure that effectively resists vibration during subsequent conveying. The cut mark retention rate is greatly improved, preventing the cut block from collapsing. Furthermore, the lateral compression of the cut block reduces the density gradient inside the cut block, making the material density more uniform and more conducive to the uniform sintering of the material in the subsequent process.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cutting tool, characterized in that, The cutter includes an inner cavity (130) and a flexible wall (121), at least a portion of the inner cavity (130) being surrounded by the flexible wall (121), the flexible wall (121) being adapted to deform away from the inner cavity (130) when the pressure in the inner cavity (130) increases, and to recover when the pressure in the inner cavity (130) decreases, at least a portion of the side of the cutter along its thickness direction being formed by the flexible wall (121).

2. The cutter as described in claim 1, characterized in that, The cutter includes a blade body (110), the blade body (110) includes a blade portion (111), the blade portion (111) has a blade (1111), and the inner cavity (130) is provided on the side of the blade portion (111) opposite to the blade (1111).

3. The cutter as described in claim 2, characterized in that, The cutter includes a flexible body (120), which is disposed on the side of the blade portion (111) away from the blade (1111). The inner cavity (130) is formed inside the flexible body (120), and the flexible body (120) has flexible walls (121) on opposite sides along the thickness direction of the cutter.

4. The cutter as described in claim 3, characterized in that, The blade body (110) includes a first support portion (112) and a second support portion (113). The first support portion (112) and the second support portion (113) are respectively disposed on the side of the blade portion (111) away from the blade (1111). The first support portion (112) and the second support portion (113) are arranged alternately along the extension direction of the blade (1111). The flexible body (120) is connected between the first support portion (112) and the second support portion (113). Preferably, the first support part (112) and the second support part (113) are respectively provided with slots (115), and the flexible body (120) is embedded between the slots (115) of the first support part (112) and the slots (115) of the second support part (113).

5. The cutter as described in claim 2, characterized in that, The blade body (110) has flexible walls (121) on opposite sides along the thickness direction of the cutter, and the blade body (110) and the flexible walls (121) on opposite sides together enclose the inner cavity (130).

6. The cutter as described in claim 5, characterized in that, The blade body (110) includes a first support portion (112), a second support portion (113), and a third support portion (114). The first support portion (112) and the second support portion (113) are respectively disposed on the side of the blade portion (111) away from the blade (1111), and the first support portion (112) and the second support portion (113) are arranged alternately along the extension direction of the blade (1111). The third support portion (114) is disposed between the first support portion (112) and the second support portion (113). The flexible walls (121) on opposite sides, together with the blade portion (111), the first support portion (112), the second support portion (113), and the third support portion (114), enclose the inner cavity (130).

7. The cutter as described in claim 1, characterized in that, The flexible wall (121) is made of metal.

8. The cutter as described in claim 1, characterized in that, The cutter includes a communication port (140) communicating with the inner cavity (130), the inner cavity (130) being adapted to receive fluid through the communication port (140) to increase pressure, and adapted to discharge fluid through the communication port (140) to decrease pressure; Preferably, the inner cavity (130) is adapted to receive and discharge fluid through the same communication port (140).

9. A cutting device, characterized in that, The cutting device includes the cutting blade as described in any one of claims 1 to 8, and a plurality of the cutting blades are arranged alternately to form a cutting blade group; Preferably, the cutting device includes a solenoid valve (200), the solenoid valve includes a first interface, a second interface and a third interface, the first interface is adapted to communicate with a fluid supply source, the second interface is communicated with the inner cavity (130) of each of the cutters, and the third interface is communicated with the outside. The solenoid valve is adapted to connect the first interface to the second interface and close the third interface when it is in the first state; The solenoid valve is adapted to connect the second interface to the third interface and close the first interface when in the second state.

10. A method for cutting and forming materials into blocks, based on the cutting device of claim 9, characterized in that, The material cutting and forming method includes the following steps: The material in the sagger is vibrated and leveled; Control the cutter to insert into the material until the preset position; The cutter is controlled to remain at the preset position for a first time, and fluid is simultaneously controlled to fill the inner cavity (130); After the first time period ends, the fluid is controlled to drain from the inner cavity (130) and the cutter is controlled to reset. Preferably, the first time is 50ms to 500ms.

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