Self-weight compaction-based conductive carbon powder application system and method

Abstract

This invention discloses a conductive toner coating system and method based on self-weight compaction. The system includes a base, a base toner box mounted on the base, a top toner frame detachably covering the base toner box, and a rotating shaft rotatably mounted on one end of the base. Both the base toner box and the top toner frame have an inner cavity for accommodating conductive toner. When the two are fastened together, a pre-reserved gap is formed for the roll paper to pass through. Under the action of gravity, the conductive toner in the top toner frame applies vertical pressure to the roll paper passing through the gap, achieving double-sided compaction coating. Simultaneously, a toner box partition for adjusting the effective width of the toner box and a paper width limiting partition for limiting the rewinding width are also provided. This invention, by utilizing the gravity of the conductive toner itself as the compaction force, combined with the traction of the rotating shaft and synchronous rewinding, can solve the problems of uneven conductive toner coating, low operating efficiency, and poor process safety in the prior art, achieving integrated continuous operation of coating and roll forming.

Description

Technical Field

[0001] This invention belongs to the interdisciplinary technical field of explosive material preparation and electrostatic safety protection, and more specifically, relates to a conductive carbon powder coating system and method based on self-weight compaction. Background Technology

[0002] Liquid oxygen energy storage rock-breaking technology, with its advantages of low cost, low emissions, safety, and low vibration, has shown broad application prospects in engineering fields such as tunnel excavation and mining. The core of this technology lies in filling an energy storage tube with liquid oxygen and a roll of special blasting paper inside. By igniting the roll of paper in the liquid oxygen, the paper burns rapidly, releasing a large amount of heat, which drives the liquid oxygen to rapidly vaporize and expand in a very short time, achieving the purpose of rock breaking.

[0003] However, during the liquid oxygen filling process, the intense friction between the liquid oxygen and the paper roll surface, as well as the liquefaction and detachment of the liquid oxygen, easily generates static electricity, posing a significant hidden danger to the inherent safety of this technology. Existing technology research indicates that the aforementioned static electricity risk can be effectively eliminated by conductive treatment of the paper roll material. Specifically, by coating the paper roll surface with conductive carbon powder, the resistivity per unit length of the paper roll system can be significantly reduced, transforming it from an insulator into a good conductor. This allows for reliable grounding to release static electricity, achieving the goal of inherent safety.

[0004] Currently, there is no mature industrialized equipment for applying conductive toner to explosive paper rolls. Traditional manual application methods are not only inefficient but also difficult to control in terms of coating uniformity, and subsequent rewinding processes are cumbersome, failing to meet the needs of large-scale production. Existing borrowed processes mainly fall into two categories: one is the pulp mixing method, which involves mixing toner into the pulp during the papermaking stage. However, due to the density difference between toner and pulp, this method cannot guarantee the uniform distribution of toner on the surface of the finished paper roll, and the amount of toner added is limited, making it difficult to meet antistatic indicators. The other is the spraying method, including dry spraying and wet spraying. Dry spraying typically uses high-pressure gas, which easily generates dust pollution and poses a risk of combustion and explosion. Furthermore, the spraying process requires a rigid platform for support and can only operate on one side, resulting in low efficiency. Wet spraying requires the toner to be made into a liquid material, adding a drying process, making the process complex and the production cost high.

[0005] In summary, the existing technology has problems such as poor uniformity, low efficiency, complex process and safety hazards when applying conductive carbon powder to rupture roll paper, which urgently need to be improved. Summary of the Invention

[0006] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a gravity-compression-based conductive toner coating system. By constructing a double-layer toner-containing structure consisting of a base toner box and a top toner frame, and utilizing the gravity of the toner within the top toner frame to apply downward vertical compaction pressure to the roll paper passing through pre-reserved gaps, this system replaces traditional high-pressure gas spraying or manual brushing. This achieves high-density penetration and uniform double-sided adhesion of conductive toner into the deep fibers of the roll paper. Simultaneously, through a rotating shaft traction and synchronous rewinding mechanism, combined with adjustable toner box partitions and paper width-limiting partitions, integrated continuous operation of coating and roll forming is achieved. Compared to existing technologies, this invention significantly improves the effectiveness and consistency of conductive modification of the roll paper, greatly increases the efficiency of large-scale production, and effectively avoids static electricity and explosion hazards by eliminating dust and high-pressure spraying, achieving inherent safety.

[0007] To achieve the above objectives, the present invention provides a self-weight compaction-based conductive toner coating system, including a base, a base toner box disposed on the base, a top toner frame detachably covering the base toner box, and a rotating shaft rotatably mounted on one end of the base for fixing the roll of paper to be coated. Both the base toner box and the top toner frame have an inner cavity to accommodate conductive toner, and when they are fastened together, they form a reserved gap for the paper roll to pass through. By utilizing the gravity of the conductive toner within the top toner frame to apply vertical pressure to the roll paper passing through the gap, combined with the traction of the rotating shaft and synchronous rewinding, the integrated continuous operation of double-sided compaction coating and rewinding of the roll paper is achieved.

[0008] Furthermore, the base body has a flat plate-like structure, with a mounting plane for the base toner box on the upper surface of one end, and two upward-extending extension arms on the top of the other end; the rotating shaft is rotatably mounted on the two extension arms. The rotating shaft, driven by the drive device, pulls the paper roll to move and rewind synchronously.

[0009] Furthermore, the top edge of the base toner box is provided with a base toner box limiting tenon; the bottom edge of the top toner frame is provided with a limiting mortise that matches the limiting tenon, and the precise positioning and stable connection between the base toner box and the top toner frame are achieved through the cooperation of the limiting tenon and the limiting mortise.

[0010] Furthermore, the base toner box has two opposing inner sidewalls parallel to the rotating shaft with a plurality of first partition grooves spaced apart; the top toner frame also has two opposing inner sidewalls parallel to the rotating shaft with a plurality of second partition grooves spaced apart; the second partition grooves and the first partition grooves are positioned correspondingly. Furthermore, the toner cartridge divider can be detachably and selectively inserted between the first and second divider grooves arranged in pairs at the same position, thereby achieving effective adjustment of the accommodating width of the base toner cartridge and the top toner frame.

[0011] Furthermore, a paper width limiting partition is slidably sleeved on the rotating shaft; the position of the paper width limiting partition can be adjusted axially according to the width of the roll paper.

[0012] Furthermore, the line connecting the center points of the two extended arms on the base is perpendicular to the longitudinal central axis of the base; The top of the extension arm is detachably fitted with a pivot cover plate; the pivot cover plate is also fitted onto both ends of the pivot.

[0013] Furthermore, the filling height of the conductive toner in the top toner frame is adjustable. By adjusting the filling height, the pressure applied to the roll paper can be controlled, thereby controlling the thickness of the coating layer and the tightness of the roll paper when it is re-rolled.

[0014] Furthermore, the vertical pressure exerted by the toner within the top toner box on the roll paper. The force originating from the gravity of the carbon powder column is expressed as: in: Density of conductive carbon powder Gravitational acceleration Top toner box bottom area : The filling height of toner in the top toner box; Resistivity per unit length of the rolled paper after coating Below the safety standard threshold : in, Thickness of the conductive carbon powder coating on one side; ; While satisfying the requirements of resistivity and coating uniformity, the system aims for maximum production efficiency. : in, The effective pressure area of ​​the paper roll within the toner cartridge; the traction linear speed of the spindle. With the angular velocity of the shaft Relationship: in: : Rotational angular velocity of the shaft (constant or adjustable); Over time The varying radius of convolution; Single-volume operation cycle Determined by the traction speed and the length of the paper roll: in: Total length of a single roll of paper; Auxiliary time for loading and unloading rolls, replenishing toner, etc.

[0015] A second aspect of the present invention provides a method for applying conductive carbon powder based on gravity compaction, which is implemented using the aforementioned conductive carbon powder application system based on gravity compaction, and includes the following steps: S1. According to the width of the roll of paper to be coated, insert the toner box partition into the corresponding partition grooves of the base toner box and the top toner frame, and fill the base toner box with conductive toner. S2. Lay the roll of paper to be coated flat on the conductive toner layer inside the base toner box, and lead one end of the roll of paper out from the reserved gap between the base toner box and the top toner frame; S3. Cover the top toner box with the base toner box and fill the top toner box with conductive toner so that the roll paper is sandwiched between the two layers of conductive toner. S4. Fix the end of the paper roll to the rotating shaft, adjust the paper width limiting plate to the preset width, drive the rotating shaft to rotate, and continuously pull the paper roll out from the reserved gap, while completing the double-sided powder coating and re-rolling operation. S5. After coating and rolling a single roll of paper, remove the spindle cover, take out the finished roll of paper from the spindle, then replenish the conductive toner in the base toner box, and repeat steps S2-S4 to work on the next roll.

[0016] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects: (1) This invention applies a vertical downward pressure to the paper roll by utilizing the gravity of the conductive carbon powder within the top carbon powder frame, forcing the carbon powder particles to compact and penetrate into the gaps between the paper roll fibers. This fundamentally solves the problems of uneven coating distribution and weak adhesion caused by spraying or mixing in the prior art. Compared to high-pressure gas spraying, which is prone to rebound and waste, and pulp mixing, which makes it difficult to control the surface concentration, this invention ensures high-density and uniform adhesion of conductive carbon powder on both sides of the paper roll surface, effectively reducing the resistivity per unit length of the paper roll system and significantly improving the reliability and stability of the conductive modification of the paper roll.

[0017] (2) This invention integrates the coating process of conductive carbon powder with the rewinding process of paper roll into a continuous operation; by rotating the shaft, the paper roll can be pulled, coated on both sides and rewound simultaneously, avoiding the cumbersome process of coating manually and then rewinding separately, and overcoming the limitations of existing spraying equipment that requires a rigid platform support and can only operate on one side; at the same time, the design of the detachable shaft cover plate enables the rapid loading and unloading of finished paper rolls, further shortening the auxiliary operation time and meeting the efficiency requirements of large-scale production.

[0018] (3) This invention has excellent process parameter adjustability. By adjusting the position of the toner cartridge partition and the paper width limiting partition, it can flexibly adapt to different widths of paper rolls and effectively guide the paper roll trajectory to prevent skewing; by adjusting the filling height of the toner in the top toner frame, the compaction degree of the coating layer and the tightness of the roll can be precisely controlled to adapt to different working conditions. In addition, compared with the dry spraying method which is prone to dust pollution and explosion hazards, and the wet spraying method which requires an additional drying process, this invention adopts a physical compaction method, which has no volatile substances, a clean working environment, eliminates the risk of dust explosion, and reduces equipment complexity and production costs. Attached Figure Description

[0019] Figure 1 This is a side view of a conductive carbon powder coating system based on self-weight compaction according to an embodiment of the present invention. Figure 2 This is a top view schematic diagram of a self-weight compaction-based conductive carbon powder coating system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the splicing structure of the base toner box and the top toner frame of a self-weight compacted conductive toner coating system according to an embodiment of the present invention. Figure 4 This is a top view of the top toner frame of a self-weight compacted conductive toner coating system according to an embodiment of the present invention. Figure 5 This is a schematic flowchart of a conductive carbon powder coating method based on self-weight compaction according to an embodiment of the present invention.

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-base toner box, 11-reserved gap, 10-first partition groove, 101-limiting tenon, 2-top toner frame, 201-limiting tenon groove, 202-second partition groove; 3-base, 31-extension arm, 4-spindle cover plate, 5-spindle, 6-paper roll, 7-conductive toner, 8-paper width limiting partition, 9-toner box partition. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, when an element is referred to as "fixed to," "set on," or "provided on" another element, it can be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to or indirectly connected to the other element. The terms "mounted," "connected," "linked," and "provided with" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] like Figures 1-4As shown, one aspect of the present invention provides a self-weight compaction-based conductive toner application system, including a base 3, a base toner box 1 disposed on the base 3, a top toner frame 2 detachably covering the base toner box 1, and a rotating shaft 5 rotatably mounted on one end of the base; the base toner box 1 has a first inner cavity for accommodating conductive toner 7; the top toner frame 2 is detachably covering the top of the base toner box 1; the top toner frame 2 has a second inner cavity for accommodating conductive toner; the base 3 has a flat plate-like structure, and the upper surface of one end is provided with a mounting plane for the base toner box 1, so that the base toner box 1 is kept horizontally and stably placed; the other end of the base 3 is provided with two upwardly extending extension arms 31; useful components are rotatably mounted on the two extension arms 31. A rotating shaft 5 is used to fix the roll of paper 6 to be coated; after the base toner box 1 and the top toner frame 2 are fastened together, a reserved gap 11 is formed for the roll of paper 6 to pass through, which is used to limit the thickness of the toner coating; the conductive toner in the top toner frame 2 applies vertical pressure to the roll of paper 6 passing through the reserved gap 11 under the action of gravity, so that the conductive toner is compacted and adhered to both sides of the roll of paper 6; the present invention solves the problems of uneven coating of conductive toner, low operation efficiency and poor process safety in the prior art by using the gravity of the conductive toner itself as the compaction force, combined with the traction of the rotating shaft and synchronous rewinding, significantly improving the effectiveness and consistency of conductive modification of roll paper, realizing integrated continuous operation of coating and rolling, and eliminating the hidden danger of dust explosion, thus achieving the purpose of cost reduction, efficiency improvement and inherent safety.

[0025] Furthermore, such as Figures 1-4 As shown, to facilitate loading, paper removal, and cleaning and maintenance, a mortise and tenon quick-connect structure is adopted between the base toner box 1 and the top toner frame 2. Specifically, the top edge of the base toner box 1 is provided with a base toner box limiting tenon 101; the bottom edge of the top toner frame 2 is provided with a limiting tenon groove 201 that matches the limiting tenon. The precise positioning and stable connection between the base toner box 1 and the top toner frame 2 are achieved through the cooperation of the limiting tenon 101 and the limiting tenon groove 201, which greatly improves the assembly efficiency of the equipment. The limiting tenon 101 is located on the top of the two side walls of the base toner box 1 that are not installed in the partition groove 10; the limiting tenon groove 201 is located at the bottom of the top toner frame 2 at the corresponding position of the limiting tenon 101. After the base toner box 1 and the top toner frame 2 are fastened together, a coating cavity is formed for the roll paper to pass through, and both are used to fill conductive toner 7, which is applied to both sides of the roll paper by self-weight compaction.

[0026] Furthermore, such as Figures 1-4As shown, to adapt to different widths of roll paper, the coating system of this invention is designed with a flexible width adjustment mechanism, specifically including a toner cartridge partition 9 and a paper width limiting partition 8; the two opposing inner sidewalls of the base toner cartridge 1, parallel to the rotating shaft 5, are respectively provided with a plurality of first partition grooves 102 at intervals; the two opposing inner sidewalls of the top toner frame 2, parallel to the rotating shaft 5, are also respectively provided with a plurality of second partition grooves 202 at intervals; the second partition grooves 202 and the first partition grooves 102 are positioned correspondingly; the toner cartridge partition 9 can be detachably and selectively inserted into the first partition grooves arranged in pairs at the same position. The space between 102 and the second partition groove 202 is used to adjust the effective accommodating width of the base toner box 1 and the top toner frame 2. Specifically, the operator can select a suitable pair of grooves according to the actual width of the roll paper and detachably insert the toner box partition 9 between them. This not only adjusts the effective accommodating width of the toner box, but also guides the roll paper's running trajectory and prevents it from deviating. A paper width limiting partition 8 is slidably sleeved on the rotating shaft 5. The position of the paper width limiting partition 8 can be axially adjusted according to the width of the roll paper to limit the edge position of the roll paper during the rewinding process and ensure the neatness of the rewound roll.

[0027] Furthermore, such as Figures 1-4 As shown, the line connecting the center points of the two extension arms 31 on the base 3 is perpendicular to the longitudinal central axis of the base 3; the extension arm 31 is provided with a rotating shaft mounting position, and the two ends of the rotating shaft 5 are rotatably supported on the two mounting positions; a rotating shaft cover plate 4 is detachably installed on the top of the extension arm 31; the rotating shaft cover plate 4 is simultaneously sleeved on both ends of the rotating shaft 5, on the one hand to close the axial end of the rotating shaft 5 to prevent the roll paper from coming out, and on the other hand to facilitate quick disassembly of the rotating shaft 5 after the operation is completed and take out the finished roll paper that has been coated; the rotating shaft 5 is used to pull the roll paper to move and rewind synchronously under the drive of the driving device.

[0028] Furthermore, this invention utilizes the principle of self-weight compaction. After the base toner box 1 and the top toner frame 2 are fastened together, a reserved gap 11 is formed between them for the roll paper 6 to pass through. In actual operation, the roll paper 6 passes through this gap. At this time, the conductive toner 7 in the top toner frame 2 continuously applies vertical downward pressure to the roll paper 6 passing through the gap under the action of gravity. This pressure forces the conductive toner to embed into the gaps between the roll paper fibers and compacts it to adhere to both sides of the roll paper, thereby achieving double-sided coating with high bonding strength.

[0029] Furthermore, the system of the present invention also has excellent process controllability. The filling height of the conductive toner 7 in the top toner frame 2 is adjustable. By adjusting the filling height, the pressure applied to the roll paper is controlled, thereby controlling the thickness of the coating layer and the tightness of the roll paper when it is re-rolled, so as to meet the conductivity modification requirements of different application scenarios.

[0030] Furthermore, considering the physical properties of conductive toner and the special nature of the operating environment, the materials of each component constituting the system of the present invention (including but not limited to the base, toner box, toner frame, etc.) are preferably non-metallic materials with certain strength and wear resistance, such as engineering plastics or hardwood; in cases where high strength is required, stainless steel or other metal materials can also be used to ensure the long service life of the equipment.

[0031] Furthermore, the total thickness of the paper roll after coating according to the present invention Determined by the physical height of the reserved gap 11, the expression is: in, Original paper roll thickness; Thickness of the conductive carbon powder coating on one side; Effective toner cartridge width Determined by the position of the partition: in, : Original width of the base toner cartridge; The number of positions to which the partition can be inserted; : Width adjustment amount corresponding to each gear; The vertical pressure exerted by the toner within the top toner box on the roll paper. Due to the gravity of the toner column: in: Density of conductive carbon powder Gravitational acceleration Top toner box bottom area : The filling height of toner in the top toner box; Depth of toner embedded in paper roll fibers With the applied pressure Proportional: in: The effective pressure-bearing area of ​​the paper roll within the toner cartridge; Pressure per unit area (pressure intensity) traction linear velocity of the shaft With the angular velocity of the shaft Relationship: in: : Rotational angular velocity of the shaft (constant or adjustable); Over time The varying radius of convolution; Single-volume operation cycle Determined by the traction speed and the length of the paper roll: in: Total length of a single roll of paper; Auxiliary time for loading and unloading rolls, replenishing toner, etc.; Resistivity per unit length of the rolled paper after coating It should be below the safety standard threshold. : While satisfying the requirements of resistivity and coating uniformity, the system aims for maximum production efficiency. (Area of ​​paper rolls processed per unit time): Constraints: (Ensure compaction without damaging the paper roll) The mathematical essence of this invention is a geometrically constrained continuum mechanics system, the core of which is controlling the height of the carbon powder column. To adjust vertical pressure And then through the angular velocity of the rotating shaft To achieve continuous traction and rewinding of the paper roll, ultimately achieving... Electrical performance indicators.

[0032] The working process and principle of the self-weight compaction conductive toner coating system provided by this invention are as follows: First, according to the width of the roll paper 6 to be coated, the effective accommodating width of the base toner box 1 is adjusted by inserting the toner box partition 9, and the box is filled with conductive toner 7. Next, the roll paper 6 is laid flat on the toner layer of the base toner box 1, and one end is led out from the reserved gap 11. Then, the top toner frame 2 is covered and filled with conductive toner 7. Then, the weight of the toner in the top toner frame 2 is used to apply vertical downward pressure to the roll paper 6 passing through the reserved gap 11, forcing the conductive toner to be compacted and penetrate into the fibers on both sides of the roll paper, so as to achieve uniform coating on both sides. Finally, the roll paper 6 is pulled to move by rotating the shaft 5 and rewinding is performed synchronously. During this process, the pressure of coating and the tightness of rolling can be controlled by adjusting the filling height of the toner in the top toner frame 2, so as to complete the integrated continuous operation from coating to rewinding.

[0033] like Figure 5 As shown, a second aspect of the present invention provides a method for applying conductive carbon powder based on self-weight compaction, comprising the following steps: S1. According to the width of the roll of paper to be coated, insert the toner box partition 9 into the corresponding partition groove 10 of the base toner box 1 and the top toner frame 2, and fill the base toner box 1 with conductive toner 7. S2. Lay the roll of paper 6 to be coated flat on the conductive toner layer inside the base toner box 1, and lead one end of the roll of paper 6 out from the reserved gap 11 between the base toner box 1 and the top toner frame 2. S3. Cover the top toner frame 2 onto the base toner box 1, and fill the top toner frame 2 with conductive toner 7 so that the roll paper 6 is sandwiched between the two layers of conductive toner. S4. Fix the end of the paper roll to the rotating shaft 5, adjust the paper width limiting plate 8 to the preset width, drive the rotating shaft 5 to rotate, and drive the paper roll 6 to be continuously pulled out from the reserved gap 11, while completing the double-sided powder coating and re-rolling operation. S5. After the single roll of paper has been coated and rolled, remove the spindle cover plate 4, take out the finished roll of paper from the spindle, then replenish the conductive toner 7 in the base toner box 1, and repeat steps S2-S4 to work on the next roll.

[0034] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A self-weight compaction based conductive carbon powder application system, characterized by: Includes a base (3), a base toner box (1) on the base (3), a top toner frame (2) that can be detachably covered above the base toner box (1), and a pivot (5) that can be rotatably installed on one end of the base (3) to fix the roll of paper (6) to be coated. The base toner box (1) and the top toner frame (2) both have an inner cavity for accommodating conductive toner (7), and when they are fastened together, they form a reserved gap (11) for the paper roll to pass through. By utilizing the gravity of the conductive toner (7) in the top toner frame (1) to apply vertical pressure to the roll paper (6) passing through the gap, combined with the traction of the rotating shaft (5) and synchronous rewinding, the integrated continuous operation of double-sided compaction coating and rewinding of the roll paper (6) is realized.

2. A self-weight compaction based conductive carbon powder painting system according to claim 1, characterized in that: The base (3) has a flat plate structure. The upper surface of one end is provided with the mounting plane of the base toner box (1), and the top of the other end is provided with two upward-extending extension arms (31). The rotating shaft (5) can be rotatably mounted on the two extension arms (31). The rotating shaft (5) pulls the paper roll (6) to move and rewind synchronously under the drive of the driving device.

3. A self-weight compaction based conductive carbon powder painting system according to claim 2, characterized in that: The base toner box (1) has a base toner box limiting tenon (101) on its top edge; the top toner frame (2) has a limiting tenon (201) on its bottom edge that matches the limiting tenon. The precise positioning and stable connection between the base toner box (1) and the top toner frame (2) are achieved through the cooperation of the limiting tenon (101) and the limiting tenon (201).

4. A self-weight compaction based conductive carbon powder application system according to any one of claims 1-3, characterized in that: The base toner box (1) has two opposite inner walls parallel to the rotating shaft (5) with a plurality of first partition grooves (102) spaced apart; the top toner frame (2) also has two opposite inner walls parallel to the rotating shaft (5) with a plurality of second partition grooves (202) spaced apart; the second partition grooves (202) and the first partition grooves (102) are in corresponding positions.

5. A self-weight compaction based conductive carbon powder painting system according to claim 4, characterized in that: The toner cartridge partition (9) can be detachably and selectively inserted between the first partition groove (102) and the second partition groove (202) arranged in pairs at the same position, so as to achieve effective accommodation width adjustment of the base toner cartridge (1) and the top toner frame (2).

6. A conductive carbon powder coating system based on self-weight compaction according to any one of claims 1-3 and 5, characterized in that: A paper width limiting partition (8) is slidably sleeved on the rotating shaft (5); the position of the paper width limiting partition (8) can be adjusted axially according to the width of the roll paper.

7. A self-weight compaction based conductive carbon dust painting system according to any one of claims 1-3, 5, characterized in that: The line connecting the center points of the two extension arms (31) on the base (3) is perpendicular to the longitudinal central axis of the base (3); The top of the extension arm (31) is detachably fitted with a pivot cover plate (4); the pivot cover plate (4) is also fitted onto both ends of the pivot (5).

8. A self-weight compaction based conductive carbon dust painting system according to any one of claims 1-3, 5, 7, characterized in that: The filling height of the conductive toner (7) in the top toner frame (2) is adjustable. By adjusting the filling height, the pressure applied to the roll paper can be controlled, thereby controlling the thickness of the coating layer and the tightness of the roll paper when it is rolled again.

9. A self-weight compaction based conductive carbon dust painting system according to any one of claims 1-3, 5, 7, characterized in that: Vertical pressure exerted by the toner in the top toner frame 2 on the paper The expression for the gravitational force originating from the toner column is wherein: : density of the conductive carbon powder : acceleration of gravity : bottom area of the top carbon powder frame : packing height of the carbon powder in the top carbon powder frame; Resistance per unit length of the roll paper after application Below a safety standard threshold : wherein, : thickness of the single-sided conductive carbon powder coating layer; ； The system seeks maximum production efficiency under the premise of meeting resistivity and coating uniformity : wherein : effective pressure receiving area of the paper in the carbon powder frame; pulling line speed of the rotation shaft and the rotation shaft angular velocity relationship: wherein: : rotation angle speed of the rotation axis (constant or adjustable); : changing of the winding radius over time ; Single-reel job cycle Depends on the speed of the tractor and the length of the paper roll: wherein: : total length of single roll paper; : auxiliary time for loading and unloading roll, replenishing toner, etc.

10. A self-weight compaction-based conductive carbon powder application method, characterized by, The application of the gravity-compacted conductive carbon powder coating system as described in any one of claims 1-9 includes the following steps: S1. According to the width of the roll of paper to be coated, insert the toner box partition (9) into the corresponding partition groove (10) of the base toner box (1) and the top toner frame (2), and fill the base toner box (1) with conductive toner (7). S2. Lay the roll of paper (6) to be coated on the conductive toner layer inside the base toner box (1), and pull out one end of the roll of paper (6) from the reserved gap (11) between the base toner box (1) and the top toner frame (2); S3. Cover the top toner frame (2) onto the base toner box (1) and fill the top toner frame (2) with conductive toner (7) so that the roll paper (6) is sandwiched between the two layers of conductive toner. S4. Fix the end of the paper roll to the rotating shaft (5), adjust the paper width limiting partition (8) to the preset width, drive the rotating shaft (5) to rotate, and drive the paper roll (6) to be continuously pulled out from the reserved gap (11) at the same time to complete the double-sided powder coating and re-rolling operation. S5. After the single roll of paper is coated and rolled, remove the spindle cover (4), take out the finished roll of paper from the spindle, and then replenish the conductive toner (7) in the base toner box (1). Repeat steps S2-S4 to work on the next roll.

Images