Dry material forming equipment

Abstract

This application provides a dry material forming apparatus, including a final stage device. The final stage device includes a final stage outer cylinder, a final stage inner rod, a material transfer structure, and a cutting structure. The final stage outer cylinder has a final stage inlet and a final stage outlet radially. The final stage inner rod is coaxially and co-oriented within the final stage outer cylinder, forming a final stage annular cavity with the outer cylinder. The material transfer structure is mounted on the final stage inner rod and can move the material when the inner rod rotates. The cutting structure is located at the final stage outlet and can cut the passing material into a film. With this configuration, the material circulates within the final stage annular cavity. Under a compacted state, it is subjected to the cutting action of the cutting structure at the final stage outlet, resulting in smooth material discharge into a film and continuous radial discharge. This avoids material accumulation at the final stage outlet, hardening, and inability to discharge, thus solving the problem in the prior art where screw extruders used in the dry preparation of electrode materials easily cause material hardening and blockage during axial extrusion, preventing discharge.

Description

Technical Field

[0001] This application relates to the field of battery production technology, specifically to a dry material forming equipment. Background Technology

[0002] Dry electrode technology in battery electrode material production is an electrode preparation technology that is completely opposite to the traditional wet slurry preparation followed by coating. This method does not require the addition of solvents, coating, drying and solvent recovery during the production process, and has many advantages such as simplifying the process, saving costs and reducing environmental pollution.

[0003] In existing technologies, screw extruders, commonly used for polymer compounding and molding, are increasingly being applied to the dry preparation of electrode materials. The pre-dispersed material formed by mixing material powder and binder is transported within the screw extruder while simultaneously undergoing compounding. Compounding involves repeatedly kneading the material to activate the binder, resulting in a fibrous state. Finally, the material is extruded under high pressure at the tail end. However, since the initial material is a loose solid, and the screw extruder involves long-distance unidirectional axial transport—meaning a continuous flow of material reaches the tail end—the material filling rate and hardness increase sharply during extrusion. This can easily lead to material hardening, clogging, and inability to discharge. Summary of the Invention

[0004] In view of this, this application provides a dry material forming equipment to solve the problem that the material is easily squeezed and blocked during axial extrusion of the screw extruder used in the dry preparation of electrode materials in the prior art, and cannot be discharged.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A dry material forming apparatus includes a final stage device, the final stage device comprising:

[0007] The final stage outer cylinder has a final stage inlet and a final stage outlet opened radially.

[0008] The inner rod of the final stage is arranged in the same direction in the outer cylinder of the final stage, and there is a final stage annular cavity between it and the outer cylinder of the final stage;

[0009] A material transfer structure is provided on the last-stage inner rod and is able to drive the material to move when the last-stage inner rod rotates;

[0010] A cutting structure is provided at the final stage outlet and is capable of cutting the passing material into a film.

[0011] Optionally, the final stage annular cavity is provided with an irregular structure. When the final stage inner rod rotates, the material transfer structure can cooperate with the irregular structure to shear and rub the material until it becomes fibrous.

[0012] Optionally, it also includes a primary device, the primary device comprising:

[0013] The primary outer cylinder has a primary inlet and a primary outlet that is radially connected to the final inlet;

[0014] The primary inner rod is arranged in the same direction in the primary outer cylinder, and there is a primary annular cavity between it and the primary outer cylinder;

[0015] The paving structure, located in the primary annular cavity, is capable of spreading the material into a continuous state when the primary outer cylinder and the primary inner rod rotate relative to each other, and allowing the material to enter the primary outlet.

[0016] Optionally, the final outlet and / or the primary outlet are provided with an adjustable structure capable of adjusting the outlet width and / or outlet length.

[0017] Optionally, the material transfer structure includes:

[0018] Textures are provided on the inner rod of the final stage; or...

[0019] A sleeve fitted onto the inner rod of the final stage and having the aforementioned texture on its outer circumferential surface; or,

[0020] Multiple strips extending axially along the inner rod of the final stage; or,

[0021] Multiple blades are distributed on the inner rod of the final stage.

[0022] Optionally, the irregular structure includes multiple teeth, protrusions, or textures densely distributed on the inner wall of the final stage outer cylinder.

[0023] Optionally, the cutting structure has wavy edges to counteract the curvature of the material during film cutting.

[0024] Optionally, the cutting structure has a wedge extending into the final stage annular cavity, the wedge capable of cutting the material and guiding the cut membrane out of the final stage outlet.

[0025] Optionally, the paving structure includes a curved baffle strip disposed on the outer wall of the primary inner rod, the curved baffle strip protruding forward along the rotation direction of the primary inner rod; or,

[0026] The paving structure includes a first spiral blade and a second spiral blade disposed on the outer wall of the primary inner rod. The first spiral blade and the second spiral blade rotate in opposite directions and are symmetrically spliced ​​about the cross-sectional direction of the primary inner rod.

[0027] Optionally, the adjustable structure capable of adjusting the outlet width includes a baffle that is slidably connected to the outer cylinder and can slide along the width direction. The baffle is provided on one side of the outlet or on both sides opposite to each other along the width direction to at least partially block the outlet. The outer cylinder is the final stage outer cylinder or the primary stage outer cylinder, and the outlet is the corresponding final stage outlet or the primary stage outlet.

[0028] Optionally, the baffle at the final stage outlet is provided with a cutting structure, and the sliding trajectory of the baffle is an arc with the same curvature as the outer cylinder of the final stage, so that the cutting angle of the cutting structure changes as the baffle slides.

[0029] Optionally, the cutting angle is 85°-95°.

[0030] Optionally, the surface of the material transfer structure is provided with a wear-increasing layer.

[0031] Optionally, the system may also include a plurality of intermediate devices disposed between the primary device and the final device, the intermediate devices comprising:

[0032] The intermediate outer cylinder has an intermediate inlet and an intermediate outlet opened radially.

[0033] The intermediate inner rod is arranged in the same direction in the intermediate outer cylinder, and there is an intermediate annular cavity between it and the intermediate outer cylinder;

[0034] The intermediate annular cavity is provided with the material transfer structure, the irregular structure, or the paving structure.

[0035] The dry material forming equipment provided in this application includes a final stage device, which is mainly composed of a final stage outer cylinder and a final stage inner rod. The final stage outer cylinder has a final stage inlet and a final stage outlet along the radial direction. There is a final stage annular cavity with a cross-section between the final stage outer cylinder and the final stage inner rod. The final stage inner rod is provided with a material transfer structure that can drive the material to move when the final stage inner rod rotates. The final stage outlet is provided with a cutting structure that can cut the passing material into a film. With this configuration, when the inner rod of the final stage rotates, the fibrous material enters the final stage annular cavity radially through the final stage inlet. Under the action of the material transfer structure, the material circulates in the final stage annular cavity. When the material in the final stage annular cavity is filled to a certain extent, the material is subjected to the cutting action of the cutting structure when it passes through the final stage outlet under the state of extrusion and compaction, and is smoothly discharged to form a film and continuously discharged radially. It does not require the high pressure required for extrusion molding as in the prior art. In the whole process, the material enters radially, circulates in the final stage annular cavity, and exits radially. There will be no situation where the material accumulates at the final stage outlet, is squeezed hard and cannot be discharged. This solves the problem that the material is easily squeezed hard and blocked during axial extrusion of the screw extruder used in the dry preparation of electrode materials in the prior art. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 This is a cross-sectional schematic diagram of the dry material forming equipment provided in the embodiments of this application;

[0038] Figure 2 A schematic diagram of the structure of the primary device provided in the embodiments of this application;

[0039] Figure 3 A schematic diagram of the structure provided in this application embodiment, showing the first spiral blade and the second spiral blade on the primary inner rod;

[0040] Figure 4 This is a schematic diagram of the edge of the cutting structure provided in an embodiment of this application;

[0041] Figure 5 A schematic diagram of a structure with blades on the final stage inner rod provided in an embodiment of this application;

[0042] Figure 6 A schematic diagram of a structure with a sleeve on the final stage inner rod provided in an embodiment of this application;

[0043] Figure 7 This is a schematic diagram of a structure with a strip plate on the final stage inner rod provided in an embodiment of this application.

[0044] exist Figures 1-7 middle:

[0045] 101. Final stage outer cylinder; 102. Final stage inner rod; 103. Cutting structure; 104. Tooth; 105. Sleeve; 106. Strip plate; 107. Blade; 108. Final stage inlet; 109. Final stage outlet;

[0046] 201. Primary outer cylinder; 202. Primary inner rod; 203. Bending stop bar; 204. Primary inlet; 205. Primary outlet; 206. First spiral blade; 207. Second spiral blade;

[0047] 301. Baffle; 302. Adjusting lug; 303. Slide groove. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] like Figure 1 As shown in the figure, this application provides a dry material forming equipment, including a final stage device. The final stage device includes a final stage outer cylinder 101, a final stage inner rod 102, a material transfer structure, and a cutting structure 103. The final stage outer cylinder 101 has a final stage inlet 108 and a final stage outlet 109 radially. The final stage inner rod 102 is coaxially and co-oriented in the final stage outer cylinder 101 and has a final stage annular cavity between it and the final stage outer cylinder 101. The material transfer structure is disposed on the final stage inner rod 102 and can drive the material to move when the final stage inner rod 102 rotates. The cutting structure 103 is disposed at the final stage outlet 109 and can cut the passing material into a film.

[0050] With this configuration, the final stage device is mainly composed of a final stage outer cylinder 101 and a final stage inner rod 102. The final stage outer cylinder 101 has a final stage inlet 108 and a final stage outlet 109 radially arranged. There is a final stage annular cavity with a cross-section between the final stage outer cylinder 101 and the final stage inner rod 102. The final stage inner rod 102 is provided with a material transfer structure that can drive the material to move when the final stage inner rod 102 rotates. The final stage outlet 109 is provided with a cutting structure 103 that can cut the passing material into a film. When the inner rod 102 rotates, the fibrous material enters the final annular cavity through the final inlet 108 and gradually along the radial direction. Under the action of the material transfer structure, the material circulates in the final annular cavity. When the material in the final annular cavity is filled to a certain extent, the material is subjected to the cutting action of the cutting structure 103 when it passes through the final outlet 109 under the extrusion and compaction state. It is successfully discharged to form a film and continuously discharged radially. In the whole process, the material enters radially, circulates in the final annular cavity, and exits radially. There will be no situation where the material accumulates at the final outlet 109 and is squeezed hard and cannot be discharged. This solves the problem that the material is easily squeezed hard and blocked during axial extrusion of the screw extruder used in the dry preparation of electrode materials in the prior art.

[0051] Moreover, since the radially discharged material has a certain width, the dry material forming equipment provided in this application can also obtain an electrode film of a corresponding width without adding other structures or increasing the overall size of the equipment.

[0052] The above embodiments are suitable for subsequent processing of already fibrous materials. In this application, the final stage device can also be designed to have the function of fibrousizing materials. In a preferred embodiment, the final stage annular cavity is provided with an irregular structure. When the final stage inner rod 102 rotates, the material transfer structure can cooperate with the irregular structure to shear and rub the material until it is fibrous.

[0053] With this setup, even if the incoming material is not yet fully fibrous, the material transfer structure moves the material while the material transfer structure moves, and the material is subjected to shearing friction from the irregular structure until it becomes fibrous, which is equivalent to a kneading effect. This allows the final stage device to simultaneously perform the dual functions of kneading and cutting / extruding the material, thereby shortening the overall production time and increasing the production efficiency in actual use.

[0054] Furthermore, in existing screw extruders, the long strip of material formed by the binder is easily bound and adhered to the screw due to the binding effect of the binder, resulting in obvious material stratification, which in turn leads to stratification of the extruded film. However, the dry material forming equipment provided in this application has a lower material thickness in the final annular cavity and is always kneaded in the inward and outward directions, avoiding the axial misalignment and adhesion caused by the helical blades in screw extruders, thus preventing stratification. Moreover, the discharge relies on the dual action of pressure and cutting, solving the above problems.

[0055] Furthermore, since the material enters and exits radially, the aspect ratio of the final stage device is unrestricted. Given that the specifications of the electrode materials used for film formation vary and have a certain width in practice, the final stage outlet 109 can be designed as a corresponding narrow strip opening according to the size of the film. Additionally, although the material can spread out as it moves within the final stage annular cavity, to better facilitate fiberization and improve efficiency, the axial lengths of the final stage outer cylinder 101 and the final stage inner rod 102 are appropriately matched, and the final stage inlet 108 is also designed as a narrow strip opening.

[0056] In one specific embodiment, the material transfer mechanism includes textures on the final inner rod 102, or a sleeve 105 fitted onto the final inner rod 102 and having textures on its outer circumferential surface, or multiple parallel strips 106 extending axially along the final inner rod 102, or multiple blades 107 dispersed on the final inner rod, the distribution trajectory of the blades 107 being spiral.

[0057] With this setup, by utilizing the static friction of the texture to move the material, or by utilizing the more effective strips 106 or blades 107 that protrude relative to the inner rod surface, in actual production, the most suitable option can be selectively implemented from the above-mentioned optional schemes according to different material states, different material ratios, and different production conditions.

[0058] In another specific embodiment, the irregular structure includes a plurality of ratchet-like teeth 104 densely distributed on the inner wall of the final stage outer cylinder 101, or it may be a plurality of protrusions without sharp edges but with flat or curved surfaces, or it may be set as a rough texture. It should be noted that the distance between the irregular structure and the material transfer structure is small.

[0059] With this configuration, the material can move along with the transfer structure and generate intense shear friction with the teeth 104, protrusions, or textures, simulating the process conditions of fibrosis. This allows the material to be fibroinated while simultaneously moving it from the final inlet 108 to the final outlet 109. Alternatively, the irregular structure can be configured in other ways, such as reciprocating radially within the final annular cavity to intermittently approach an independently operating electromechanical structure located away from the transfer structure.

[0060] It should be noted that the specific production functions of the material transfer structures in different states, when combined with the irregularly shaped structures, vary. When the final-stage inner rod 102 has textured surfaces or a sleeve 105 with textured outer surfaces is used, the final-stage inner rod 102, while having the ability to drag materials, avoids the influence of protruding agitators on the discharge surface, resulting in a smooth discharge film. When the strip plate 106 is used, it helps to increase the number of times the material is kneaded. When the dispersed blades 107 are used, because the agitator is cut along the axial direction, the discontinuous structure can enhance the mixing of the material flow within the cavity and increase the material residence time. In actual production, different options can be selectively implemented based on different material ratios and different production conditions.

[0061] In an optional embodiment, the surface of the material transfer structure is provided with a friction-enhancing layer, which may be sprayed tungsten carbide or other sprayed coatings that increase frictional resistance. By enhancing friction, the self-lubricating effect of the material is reduced, thereby strengthening the ability to move the material and helping to improve the efficiency of fiberization.

[0062] On the other hand, considering that the cut film has a certain width, and that surface bending will occur during film formation under tension-dominated conditions, the cutting structure 103 can be configured with a wavy edge, such as... Figure 3 As shown, this is done to counteract the curvature of the material during film cutting, so that the film emerges as a flat surface.

[0063] In one specific embodiment, the cutting structure 103 is provided with a wedge extending into the final stage annular cavity. The wedge can cut the material and guide the cut film through the final stage outlet 109. The wedge tip angle of the wedge is in the range of 22°-27°, and this angle range is used in production to obtain better cutting effect. Preferably, the wedge is in the tangential direction of the final stage annular cavity, and the direction of the final stage outlet 109 is also along the tangential direction. In this way, the tip of the wedge is used to contact the compressed and compacted material passing through it. Driven by the stirring body on the rotating final stage inner rod 102, the extrusion and cutting are completed, and the material is discharged from the final stage outlet 109.

[0064] In a preferred embodiment, such as Figures 1-2 As shown, the dry material forming equipment also includes a primary device arranged parallel to the final stage device. The primary device includes a primary outer cylinder 201, a primary inner rod 202, and a spreading structure. The primary outer cylinder 201 has a primary inlet 204 and a primary outlet 205 radially connected to the final stage inlet 108. The primary inner rod 202 is coaxially and in the primary outer cylinder 201, and forms a primary annular cavity between it and the primary outer cylinder 201. The spreading structure is located in the primary annular cavity and can spread the material continuously when the primary outer cylinder 201 and the primary inner rod 202 rotate relative to each other, allowing the material to enter the primary outlet 205. It should be noted that due to the spreading structure, the primary inlet 204 can be opened radially or axially along the primary outer cylinder 201, both achieving the purpose of spreading the material. Preferably, the primary inlet 204 can be opened radially along the primary outer cylinder 201, which allows for faster material spreading.

[0065] With this configuration, the primary device also has a primary outer cylinder 201 and a primary inner rod 202, which are nested together. A primary annular cavity with a cross-section of annularity is formed between the primary outer cylinder 201 and the primary inner rod 202. The pre-dispersed material enters the primary annular cavity radially through the primary inlet 204. As the primary outer cylinder 201 and the primary inner rod 202 rotate relative to each other, the spreading structure spreads out any material that may be piled up, making the material evenly distributed along the primary annular cavity. In this way, the material is shaped in the primary device before entering the final device, and enters the final device in a loose, continuous sheet-like form. Based on this state of the material, the shearing and friction in the final device are more thorough, which is conducive to more complete and rapid fiberization. At the same time, the primary device and the final device work together to achieve continuous operation and material output. This allows the dry material forming equipment to integrate three functions: mixing, forming, and continuous operation. It avoids the problem in some existing electrode dry preparation processes that require manual transfer of materials between different devices to complete different processes, thus optimizing the degree of human intervention.

[0066] Moreover, due to the presence of the paving structure, this dry material forming equipment can also solve the problems of difficulty in adding additives to the materials in the existing technology and difficulty in achieving overall uniformity due to the long screw.

[0067] In an alternative embodiment, such as Figures 2-3 As shown, the paving structure includes a curved baffle 203 disposed on the outer wall of the primary inner rod 202, the curved baffle 203 protruding forward along the rotation direction of the primary inner rod 202. The curved baffle 203 can be bent or curved, that is, its front end is a sharp corner or a rounded arc, preferably a plurality of curved baffles 203 are evenly arranged around the primary inner rod 202.

[0068] With this configuration, when the curved baffle 203 rotates with the primary inner rod 202, its protruding position is in front of other parts, which can break up the pile of material and spread it out, thus achieving paving. Of course, the paving structure can also be set as a curved strip structure fixed to the inner wall of the primary outer cylinder 201.

[0069] Alternatively, in another optional embodiment, the paving structure includes a first spiral blade 206 and a second spiral blade 207 disposed on the outer wall of the primary inner rod 202, wherein the first spiral blade 206 and the second spiral blade 207 have opposite directions of rotation and are symmetrically spliced ​​about the cross-sectional direction of the primary inner rod 202.

[0070] With this configuration, the spiral directions of the two spiral blades are opposite. That is, when the primary inner rod 202 rotates, the transport directions of the first spiral blade 206 and the second spiral blade 207 are opposite, which enables the piled material to be spread out to both sides and evenly spread, which is suitable for the case where the primary inlet 204 is opened radially.

[0071] In another preferred embodiment, the final outlet 109 and / or the primary outlet 205 are provided with an adjustable structure that can adjust the outlet width and / or outlet length. The outlet is a narrow strip-shaped opening, the outlet width being the size of the relatively narrower side of the outlet, and the outlet length being the size of the relatively longer side of the outlet.

[0072] With this setup, for the adjustable structure at the primary outlet 205, in actual production, if the outlet width of the primary outlet 205 is too large, the material may enter the final stage device before it has been properly spread in the primary annular cavity. In this case, the outlet width of the primary outlet 205 can be adjusted through the adjustable structure to delay the timing of the material entering the final stage device. Alternatively, the amount of material fed into the final stage device can be controlled by adjusting the outlet width, allowing for appropriate outlet size adjustment based on material distribution to achieve the purpose of intervening and adjusting material handling conditions. For the adjustable structure at the final outlet 109, adjusting the outlet width of the final outlet 109 allows for adjustment of the film thickness. In addition, adjusting the outlet length of the final outlet 109 through the adjustable structure allows for adjustment of the width of the discharged film to adapt to the production of electrode materials of different specifications, enhancing the production adaptability and flexibility of this dry material forming equipment. Adjusting the outlet length of the primary outlet 205 through the adjustable structure allows for control of the amount of material entering the final stage device from the primary device.

[0073] In an optional embodiment, the adjustable structure capable of adjusting the outlet width includes a baffle 301 slidably connected to the outer cylinder and slidable along the outlet width direction. The baffle 301 is provided on one side of the outlet or on both opposite sides along the width direction to at least partially obstruct the outlet. Specifically, the baffle 301 may have an adjusting lug 302, and the end cap of the outer cylinder may have a sliding groove 303 for the adjusting lug 302 to slide. The baffle 301 is provided on one side of the outlet or on both sides along the outlet width direction, i.e., the baffle 301 may be provided on one side or both sides to at least partially obstruct the outlet. Additionally, the baffle 301 may be configured to slide under the drive of an electromechanical structure to achieve electrical control. The outer cylinder is either the final stage outer cylinder 101 or the primary stage outer cylinder 201, and the outlet is either the corresponding final stage outlet 109 or the primary stage outlet 205. It should be noted that the specific structural composition is similar for adjustable structures that can adjust the outlet length; if the adjustable structure can adjust both the outlet width and the outlet length, then the baffle 301 for adjusting the outlet width and the baffle for adjusting the outlet length are stacked and do not interfere with each other. In this way, the structure is simplified and control is convenient.

[0074] Furthermore, at the final stage outlet 109, a cutting structure 103 is mounted on a baffle 301, and the sliding trajectory of the baffle 301 is an arc with the same curvature as the final stage outer cylinder 101, so that the cutting angle of the cutting structure 103 changes as the baffle 301 slides. In this way, while adjusting the outlet width of the final stage outlet 109, the cutting angle can also be adjusted to adapt to different discharge requirements. The cutting angle is the radial angle between the cutting structure 103 and the material in the final stage annular cavity. Generally, when the cutting structure 103 is set on the baffle 301 at the upper lip of the final outlet 109, there is also a corresponding baffle 301 at the lower lip of the final outlet 109. When it is necessary to adjust the thickness of the cut material film, the baffle 301 at the lower lip is adjusted, and then the baffle 301 at the upper lip is adjusted accordingly, so that the cutting angle of the cutting structure 103 changes accordingly. At the same time, it can also ensure that the direction of the final outlet 109 is along the movement direction of the cut material, which is conducive to smooth material discharge and flat film formation after adjustment, thus optimizing the production operation effect.

[0075] Specifically, the cutting angle ranges from 85° to 95°, including the endpoint value, and is preferably controlled at 90°, meaning that the cutting structure 103 cuts the material along the tangential direction.

[0076] In a more preferred embodiment, the dry material forming equipment further includes several intermediate devices arranged in parallel between the primary device and the final device. Each intermediate device includes an intermediate outer cylinder and an intermediate inner rod. The intermediate outer cylinder has an intermediate inlet and an intermediate outlet radially. The intermediate inner rod is coaxially arranged in the intermediate outer cylinder and has an intermediate annular cavity circumferentially between it and the intermediate outer cylinder. The intermediate annular cavity is provided with a material transfer structure, an irregular structure, or a spreading structure.

[0077] This setup allows for flexible arrangement of multiple stages of equipment according to different production conditions. Each stage can be equipped with a corresponding material transfer structure, irregular structure, or paving structure to complete the preset process flow and achieve a more ideal final output.

[0078] It should be noted that the radial dimensions of the primary annular cavity, intermediate annular cavity, and final annular cavity are all relatively narrow to ensure that the material is fully processed.

[0079] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0080] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0081] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0082] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0083] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0084] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A dry material forming equipment, characterized in that, Includes a final stage device, the final stage device comprising: The final stage outer cylinder (101) has a final stage inlet (108) and a final stage outlet (109) opened radially; The final stage inner rod (102) is arranged in the same direction in the final stage outer cylinder (101) and has a final stage annular cavity between it and the final stage outer cylinder (101). The final stage annular cavity is provided with an irregular structure, which includes multiple teeth (104) or multiple protrusions or textures densely distributed on the inner wall of the final stage outer cylinder (101). When the final stage inner rod (102) rotates, the material transfer structure can cooperate with the irregular structure to shear and rub the material until it becomes fibrous. The material transfer structure is provided on the last stage inner rod (102) and can drive the material to move when the last stage inner rod (102) rotates; A cutting structure (103) is provided at the final outlet (109) and is capable of cutting the passing fibrous material into a film.

2. The dry material forming equipment according to claim 1, characterized in that, It also includes a primary device, which comprises: The primary outer cylinder (201) has a primary inlet (204) and a primary outlet (205) that is radially connected to the final inlet (108); The primary inner rod (202) is disposed in the primary outer cylinder (201) in the same direction, and has a primary annular cavity between it and the primary outer cylinder (201); The paving structure, located in the primary annular cavity, is capable of spreading the material into a continuous state when the primary outer cylinder (201) and the primary inner rod (202) rotate relative to each other, and allowing the material to enter the primary outlet (205).

3. The dry material forming equipment according to claim 2, characterized in that, The final outlet (109) and / or the primary outlet (205) are provided with an adjustable structure that can adjust the outlet width and / or outlet length.

4. The dry material forming equipment according to claim 1, characterized in that, The material transfer structure includes: Textures provided on the inner rod (102) of the final stage; or, A sleeve (105) fitted onto the final inner rod (102) and having a textured outer surface; or, Multiple strips (106) extending axially along the final inner rod (102); or, Multiple blades (107) are distributed on the inner rod (102) of the final stage.

5. The dry material forming equipment according to claim 1, characterized in that, The cutting structure (103) has a wavy edge to counteract the curvature of the material during film cutting.

6. The dry material forming equipment according to claim 1, characterized in that, The cutting structure (103) has a wedge extending into the final stage annular cavity, the wedge being capable of cutting the material and guiding the cut membrane through the final stage outlet (109).

7. The dry material forming equipment according to claim 2, characterized in that, The paving structure includes a curved baffle (203) disposed on the outer wall of the primary inner rod (202), the curved baffle (203) protruding forward in the rotation direction of the primary inner rod (202); or, The paving structure includes a first spiral blade (206) and a second spiral blade (207) disposed on the outer wall of the primary inner rod (202). The first spiral blade (206) and the second spiral blade (207) have opposite directions of rotation and are symmetrically spliced ​​about the cross-sectional direction of the primary inner rod (202).

8. The dry material forming equipment according to claim 3, characterized in that, The adjustable structure capable of adjusting the outlet width includes a baffle (301) that is slidably connected to the outer cylinder and can slide along the width direction. The baffle (301) is provided on one side of the outlet or on both sides opposite to each other along the width direction to at least partially block the outlet. The outer cylinder is the final stage outer cylinder (101) or the primary stage outer cylinder (201), and the outlet is the corresponding final stage outlet (109) or the primary stage outlet (205).

9. The dry material forming equipment according to claim 8, characterized in that, A cutting structure (103) is provided on the baffle (301) at the final stage outlet (109), and the sliding trajectory of the baffle (301) is an arc with the same curvature as the final stage outer cylinder (101), so that the cutting angle of the cutting structure (103) changes after the baffle (301) slides.

10. The dry material forming equipment according to claim 9, characterized in that, The cutting angle is 85°-95°.

11. The dry material forming equipment according to claim 1, characterized in that, The surface of the material transfer structure is provided with a wear-increasing layer.

12. The dry material forming equipment according to claim 2, characterized in that, It also includes a plurality of intermediate devices disposed between the primary device and the final device, the intermediate devices comprising: The intermediate outer cylinder has an intermediate inlet and an intermediate outlet opened radially. The intermediate inner rod is arranged in the same direction in the intermediate outer cylinder, and there is an intermediate annular cavity between it and the intermediate outer cylinder; The intermediate annular cavity is provided with the material transfer structure, the irregular structure, or the spreading structure. The irregular structure includes multiple teeth, multiple protrusions, or textures densely distributed on the inner wall of the intermediate outer cylinder.

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