Conductive slurry three-roller mill with cleaning mechanism

Abstract

The utility model provides a conductive paste three-roller mill with a cleaning mechanism. The conductive paste three-roller mill comprises a machine table, a rolling mechanism and the cleaning mechanism. A horizontal feeding channel is arranged on the machine table, the rolling mechanism comprises three roll shafts arranged on the two sides of the feeding channel in parallel and a driving device, the cleaning mechanism comprises two mounting plates symmetrically arranged on the upper sides of the two ends of the roll shafts and a detachably fixed cleaning roller, and bristles are evenly distributed on the periphery of the cleaning roller. The mounting plates slide in the vertical direction and are provided with mounting positions corresponding to the middle positions of the adjacent roller shafts, and the two ends of the cleaning roller are provided with structures clamped with the mounting positions, so that quick replacement is facilitated. An adjusting structure is arranged on the side wall, so that bristles on the cleaning roller can be in contact with or away from the surface of the roller shaft, rolling brushing is automatically carried out when the grinding roller is started, and efficient and automatic cleaning is achieved. Manual intervention is reduced, operation convenience and maintenance efficiency are improved through flexible replacement and rapid disassembly and assembly of the cleaning roller, and meanwhile operation safety is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to three roll mill's technical field, especially a conductive paste three roll mill with cleaning mechanism. BACKGROUND

[0002] In the manufacturing field of high viscosity materials such as conductive paste, three roll mill (also known as three roll grinder) is widely used due to its efficient grinding and dispersion performance. Through the mutual extrusion of the surfaces of the three horizontally arranged grinding rollers and the friction of different speeds, fine grinding of the material can be achieved. For products that need to have specific conductive properties, such as conductive paste, three roll grinder is an indispensable key processing equipment.

[0003] However, the traditional three roll grinder has obvious limitations when dealing with materials such as conductive aluminum paste that have adhesion.

[0004] Specifically, after the grinding process is completed, a certain amount of conductive paste often remains on the surface of the grinding roller. These residues not only cause subsequent dry grinding, which accelerates the wear of the equipment and may cause mechanical failure, but also increase maintenance costs and time.

[0005] In addition, the current commonly used manual cleaning method requires the operator to use cloth to wipe during the operation of the machine, which not only is inefficient, but also poses a significant safety risk.

[0006] Therefore, in view of the above problems, the present case aims to provide an improved three roll grinder and its matching cleaning system to effectively reduce or avoid the formation of residues on the surface of the grinding roller, while improving the safety and automation level of the cleaning process, thereby prolonging the service life of the equipment, reducing operating costs, and ensuring the continuity and stability of the production process. INVENTION CONTENTS

[0007] To solve the above problems, the technical solution of the utility model is as follows:

[0008] A conductive paste three roll mill with a cleaning mechanism, comprising:

[0009] A machine table with a horizontal walkway formed at the upper end;

[0010] A roller pressing mechanism including three parallel roller shafts arranged in sequence between the two sides of the walkway and a drive device for driving the roller shafts;

[0011] A cleaning mechanism including two mounting plates symmetrically arranged on the upper side of the two ends of the roller shafts and located on the side wall of the walkway, and a cleaning roller detachably fixed between the two mounting plates, the outer periphery of the cleaning roller is evenly distributed with a plurality of bristles;

[0012] Wherein:

[0013] The installation plate is vertically slidingly arranged on the side wall of the material conveying channel and has two installation positions corresponding to the middle positions of the two adjacent rollers, the two ends of the cleaning roller form an installation structure for clamping with the installation positions, and the side wall of the material conveying channel is provided with an adjusting structure for adjusting the height of the installation plate so that the bristles on the cleaning roller contact or are away from the outer surface of the adjacent roller.

[0014] Preferably, the installation plate symmetrically extends to form two fixed edges on the upper ends of the two sides in the extension direction of the material conveying channel, the side wall of the material conveying channel is symmetrically provided with two support edges opposite the positions of the fixed edges, the upper end surface of the support edge is vertically provided with a first positioning shaft, the outer circumferential side of the first positioning shaft is sleeved with a first supporting spring, and the upper and lower ends of the first supporting spring are respectively in movable contact with the lower end surface of the fixed edge and the upper end surface of the support edge.

[0015] Preferably, the installation plate is provided with a fixed seat on the side away from the side wall of the material conveying channel and located at the position close to the upper end, the material conveying channel is provided with an adjusting seat opposite the position of the fixed seat at the upper end of the installation plate, a vertically distributed adjusting bolt is threadedly connected to the central position of the adjusting seat, and the lower end of the adjusting bolt passes through the lower end of the adjusting seat and is in movable contact with the upper end surface of the fixed seat.

[0016] Preferably, the outer circumferential side of the adjusting bolt is sleeved with a second supporting spring, and the upper and lower ends of the second supporting spring are respectively in movable contact with the lower end surface of the adjusting seat and the upper end surface of the fixed seat.

[0017] Preferably, the upper end of the adjusting bolt is provided with a cap portion facilitating gripping, and the outer circumferential side of the cap portion is provided with an anti-skid pattern.

[0018] Preferably, the side wall of the material conveying channel is provided with two parallel and vertically distributed guide rails, a sliding connection seat is slidingly arranged on the guide rails, and the back surface of the installation plate is fixed on the sliding connection seat to realize vertical guidance.

[0019] Preferably, a gap is formed between the lower end of the roller pressing structure and the bottom surface of the material conveying channel, a recovery disc with an opening larger than the covered area of the roller pressing structure is arranged in the gap, and a filter screen for filtering residual conductive paste is arranged on the inner side of the opening of the recovery disc and located at the position close to the top.

[0020] Preferably, the two ends of the cleaning roller protrude along the axial direction to form two clamping ends, the outer circumferential side of the clamping end is inwardly recessed to form a plurality of limiting grooves distributed along the axial direction, one side wall of the material feeding channel is provided with two mounting positions in the form of hollow sleeves protruding outward, the inner side of the sleeve is hollow and protrudes outward along the circumferential side to form a first limiting block embedded in the limiting groove, the other side is provided with two mounting positions in the form of U-shaped openings, the inner side of the connecting structure is provided with a clamping groove in the form of a semicircle and matched with the diameter of the clamping end, the upper side of the clamping groove is provided with an opening groove with a side spacing equal to the diameter of the clamping groove, and the clamping groove is provided with a second limiting block embedded in the limiting groove.

[0021] Preferably, the cleaning roller comprises a roller core and a roller sleeve, the inner side of the roller sleeve is provided with a hollow clamping space distributed along the axial direction, the bristles are nylon bristles and are fixed to the outer circumferential side of the roller sleeve, the clamping space is provided with a plurality of flow guiding apertures located between adjacent bristles, and one end of the roller sleeve is provided with a liquid injection port communicating with the clamping space.

[0022] Preferably, the flow guiding apertures are distributed along the arc surface of the outer circumferential side of the roller sleeve and are uniformly arranged at four flow guiding apertures around the circumferential surface at the same position of the roller sleeve.

[0023] The cleaning roller of the present application has the following beneficial effects:

[0024] The adjustable structure enables the cleaning roller to closely contact the surface of the grinding roller, so that when the grinding roller is started, the bristles on the cleaning roller automatically roll and brush the surface of the grinding roller, realizing efficient automatic cleaning. Meanwhile, the clamping design between the cleaning roller and the mounting position not only allows the cleaning roller to be flexibly replaced between different adjacent grinding rollers, but also supports quick disassembly and assembly, greatly improving the convenience and maintenance efficiency of operation. This design not only utilizes the power of the grinding roller to complete the cleaning work, reduces manual intervention, reduces the work burden of the operator and improves the cleaning efficiency; through the flexibility and maintainability of the cleaning roller, it adapts to various work demands, simplifies the daily maintenance process and reduces the maintenance cost. Most importantly, the automatic cleaning process avoids direct contact of the operator with the running equipment, significantly improving the safety of operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application.

[0026] Among them:

[0027] Figure 1 is a schematic diagram of the overall structure of the present application;

[0028] Figure 2 is a partial sectional structure schematic view of the roller shaft and the cleaning mechanism in the utility model;

[0029] Figure 3 is a partial sectional structure schematic view of the roller shaft and the cleaning mechanism in the utility model;

[0030] Figure 4 is a sectional structure schematic view of the cleaning roller in the utility model;

[0031] Figure 5 is a sectional structure schematic view of the cleaning roller in the utility model;

[0032] Figure 6 is a sectional structure schematic view of the cleaning roller in the utility model.

[0033] Label explanation:

[0034] 10, machine table; 11, material passing channel; 111, supporting edge; 112, first positioning shaft; 113, first supporting spring; 20, roller pressing mechanism; 21, roller shaft; 30, cleaning mechanism; 31, mounting plate; 311, fixed edge; 312, fitting part; 32, cleaning roller; 321, clamping end; 322, limiting groove; 323, roller core; 324, roller sleeve; 325, clamping space; 326, flow guiding aperture; 327, liquid injection port; 33, brush hair; 40, adjusting structure; 41, fixed seat; 42, adjusting seat; 43, adjusting bolt; 44, second supporting spring; 45, cap part; 50, guide rail; 51, sliding connection seat; 60, recovery disc; 61, recovery groove; 62, filter screen; 70, sleeve; 71, first limiting block; 80, connecting structure; 81, clamping groove; 82, opening groove; 83, second limiting block. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical schemes and beneficial effects to be solved in the utility model more clear and explicit, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0036] Please refer to Figures 1 to 6 is a conductive paste three-roll mill with a cleaning mechanism 30 as the best embodiment of the utility model, comprising a machine table 10, a roller pressing mechanism 20 and a cleaning mechanism 30, wherein:

[0037] The upper end of the machine table 10 forms a horizontal material feeding channel 11, two of the side walls of the material feeding channel 11 are externally penetrated to form areas for feeding and discharging materials, and the other two side walls are connected with the machine table 10 to form corresponding mounting bases;

[0038] The roller pressing mechanism 20 includes three parallel roller shafts 21 arranged in sequence between the two side walls of the material feeding channel 11 and a driving device (not shown in the figure) for driving the roller shafts 21;

[0039] The cleaning mechanism 30 includes two mounting plates 31 symmetrically arranged on the upper sides of the two ends of the roller shafts 21 and located on the side walls of the material feeding channel 11, a cleaning roller 32 detachably fixed between the two mounting plates 31, and a plurality of bristles 33 uniformly distributed on the outer circumferential side of the cleaning roller 32;

[0040] That is, in the embodiment, the two mounting plates 31 are respectively mounted on the two side walls of the material feeding channel 11, and the cleaning roller 32 is arranged between the two mounting plates 31 and located directly above the position between the two adjacent roller shafts 21 in the mounted state.

[0041] Among them:

[0042] The mounting plate 31 is vertically slidingly arranged on the side wall of the material feeding channel 11 and has two mounting positions (not marked in the figure) corresponding to the positions between the two adjacent roller shafts 21, the two ends of the cleaning roller 32 form a mounting structure (not marked in the figure) for clamping cooperation with the mounting positions, and the side wall of the material feeding channel 11 is provided with an adjusting structure 40 for adjusting the height of the mounting plate 31 so that the bristles 33 on the cleaning roller 32 contact or move away from the outer surface of the adjacent roller shaft 21.

[0043] Preferably, as shown in Figure 2 , 3 The two upper ends of the mounting plate 31 symmetrically extend to form two fixed edges 311 along the extension direction of the material feeding channel 11, the side wall of the material feeding channel 11 is symmetrically provided with two support edges 111 opposite to the positions of the fixed edges 311, the upper end surface of the support edge 111 is vertically protruded with a first positioning shaft 112, the first positioning shaft 112 is sleeved with a first supporting spring 113 on the outer circumferential side, and the upper and lower ends of the first supporting spring 113 are respectively movably contacted with the lower end surface of the fixed edge 311 and the upper end surface of the support edge 111.

[0044] Therefore, the first supporting spring 113 cooperates with the first positioning shaft 112 to elastically support the fixed edge 311, so that the mounting plate 31 is elastically supported above the roller shaft 21, the lower end of the mounting plate 31 protrudes between the two adjacent roller shafts 21 to form a fitting part 312 adapted to the outer circumference of the roller shaft 21, and under the support of the first supporting spring 113, the fitting part 312 is located at a position slightly higher than the gap between the two roller shafts 21 in the initial state.

[0045] Preferably, as shown in Figure 2、 3 As shown in the figure, the mounting plate 31 is provided with a fixing seat 41 on the side away from the side wall of the material passing channel 11 and close to the upper end of the material passing channel 11, the material passing channel 11 is provided with an adjusting seat 42 on the upper end of the mounting plate 31, the adjusting seat 42 is opposite to the vertical position of the fixing seat 41, and a vertically distributed adjusting bolt 43 is threadedly connected to the center position of the adjusting seat 42, and the lower end of the adjusting bolt 43 passes through the lower end of the adjusting seat 42 and movably contacts the upper end surface of the fixing seat 41.

[0046] Therefore, by rotating the adjusting bolt 43, the adjusting bolt 43 as a whole vertically rises or vertically descends relative to the adjusting seat 42, and in the descending process, a downward pressure is generated on the fixing seat 41, so that the fixing seat 41 drives the mounting plate 31 to move downward as a whole, so that the mounting plate 31 drives the cleaning roller 32 to move downward to the position where the bristles 33 of the cleaning roller 32 are tightly attached to the surface of the roller shaft 21, and the tightness of the bristles 33 to the roller shaft 21 can be adjusted as needed.

[0047] Preferably, as shown in the figure, Figure 2 , 3 The outer periphery of the adjusting bolt 43 is sleeved with a second supporting spring 44, and the upper and lower ends of the second supporting spring 44 movably contact the lower end surface of the adjusting seat 42 and the upper end surface of the fixing seat 41, respectively.

[0048] Through the second supporting spring 44, the adjusting bolt 43 and the fixing seat 41 can be elastically pressed together, so that the lifting process of the mounting plate 31 is more stable and controllable.

[0049] Preferably, as shown in the figure, Figure 2 , 3 The upper end of the adjusting bolt 43 is provided with a cap 45 for easy gripping, and the outer periphery of the cap 45 is provided with a non-slip pattern (not labeled in the figure).

[0050] In this embodiment, the cap 45 is made of plastic material and is integrally formed on the upper end of the adjusting bolt 43, and the non-slip pattern can increase the friction between the user's hand and the cap 45, so that the user can more stably control the adjusting bolt 43.

[0051] Preferably, as shown in the figure, Figure 2 , 3 The side wall of the material passing channel 11 is provided with two parallel and vertically distributed guide rails 50, a sliding connecting seat 51 is slidably arranged on the guide rail 50, and the back surface of the mounting plate 31 is fixed on the sliding connecting seat 51 to realize vertical guidance.

[0052] In this embodiment, the guide rails 50 are symmetrically distributed on both sides of the mounting plate 31, so that the lifting process is more smooth.

[0053] Preferably, as shown in the figure, Figure 2 , 3As shown, a gap (not marked in the figure) is formed between the lower end of the rolling structure and the bottom surface of the material conveying channel 11, and a recovery disc 60 with an opening larger than the coverage area of the rolling structure is arranged in the gap. The inner side of the recovery disc 60 is provided with a recovery groove 61, and the upper end opening of the recovery groove 61 is provided with a filter screen 62 for filtering residual conductive paste.

[0054] In this embodiment, the aperture of the filter screen 62 is smaller than the general size of the conductive paste, and is preferably an 800-mesh screen, so that the residual conductive paste falling from the cleaning brush roller can be filtered through the filter screen 62, and the remaining cleaning liquid can be fully filtered for recycling.

[0055] Preferably, as shown in Figure 3 , 4 As shown, the two ends of the cleaning roller 32 protrude along the axial direction to form two clamping ends 321, and the outer circumferential side of the clamping end 321 is recessed inward to form a plurality of limiting grooves 322 distributed along the axial direction. One side wall of the material conveying channel 11 is provided with two mounting positions in the form of hollow sleeves 70 protruding outward, and the inner hollow part of the sleeve 70 protrudes outward around the circumferential side to form a first limiting block 71 embedded in the limiting groove 322. The other side is provided with two mounting positions in the form of a U-shaped opening connection structure 80, and the inner side bottom of the connection structure 80 is formed in a semicircular shape and is adapted in diameter to the clamping end 321. A clamping groove 81 is formed on the upper side of the clamping groove 81, and the opening groove 82 with a side distance equal to the diameter of the clamping groove 81 is formed. The clamping groove 81 is provided with a second limiting block 83 embedded in the limiting groove 322.

[0056] Therefore, through the limiting groove 322 and the connection structure 80, the clamping end 321 of the two ends of the cleaning roller 32 can be clamped. During assembly, the clamping end 321 of one end of the cleaning roller 32 is inserted into the opening of the hollow sleeve 70, and the limiting groove 322 is aligned with the first limiting block 71 of the sleeve 70. After insertion, the unilateral cleaning roller 32 can be fixed. The clamping end 321 of the other side of the cleaning roller 32 is first placed downward from the upper end opening of the upper end opening groove 82 of the connection structure 80, and then enters the clamping groove 81, so that the limiting groove 322 of the clamping end 321 is aligned with the corresponding second limiting block 83 in the clamping groove 81. The assembly process of the cleaning roller 32 is completed.

[0057] Among them, the first limiting block 71 and the limiting groove 322 are uniformly provided with 3 in the circumferential direction, and are formed with arc-shaped transition edges, and the second limiting block 83 is provided with 2. In order to increase the stability of the cleaning roller 32, a cap (not shown in the figure) can be additionally provided on the connection structure 80, so as to press and fix the clamping end 321 on the connection structure 80, avoiding the clamping end 321 on the other side from being lifted by the bristles 33 when the roller shaft 21 rotates.

[0058] Preferably, as shown in Figure 5、 6 As shown in the figure, the cleaning roller 32 comprises a roller core 323 and a roller sleeve 324, the inside of the roller sleeve 324 is formed with a hollow jacket space 325 distributed along the axial direction thereof, the bristles 33 are nylon bristles 33 and are fixed to the outer peripheral side of the roller sleeve 324, the jacket space 325 is provided with a plurality of flow guide apertures 326 located between adjacent bristles 33, one end of the roller sleeve 324 is provided with a liquid injection port 327 communicating with the jacket space 325, the liquid injection port 327 is connected with an external cleaning liquid pumping device for inputting cleaning liquid into the jacket space 325.

[0059] In this embodiment, the external cleaning liquid pumping device is a liquid pump (not shown in the figure), which is connected with the liquid injection port 327 through a corresponding connecting hose (not shown in the figure), and when the liquid pump is turned on, the cleaning liquid in the corresponding container can be input into the jacket space 325, and finally when the cleaning liquid flows out of the flow guide apertures 326, it can be uniformly attached to the bristles 33 or flow to the surface of the roller shaft 21, and finally, the rotation of the bristles 33 and the roller shaft 21 can conveniently brush off the residual conductive paste on the roller shaft 21.

[0060] Among them, the nylon bristles 33 can be more resistant to corrosion of the conductive paste and the cleaning liquid, so that the cleaning mechanism 30 is more durable as a whole.

[0061] Preferably, as shown in the figure, Figure 5 、 6 As shown in the figure, the flow guide apertures 326 are distributed along the arc surface of the outer peripheral side of the roller sleeve 324 and are uniformly arranged at four flow guide apertures 326 around the circumferential surface of the same position of the roller sleeve 324.

[0062] Therefore, through the four uniformly distributed flow guide apertures 326 at the same position and the plurality of groups of four flow guide apertures 326 continuously distributed along the axial direction of the roller sleeve 324, the cleaning liquid can be uniformly guided out of the jacket space 325 to the bristles 33 or the surface of the roller sleeve 324, and the uniformity of the cleaning liquid coating is enhanced.

[0063] The beneficial effects of the utility model are as follows:

[0064] The utility model discloses a cleaning roller 32 can be closely contacted with the surface of the grinding roller through adjustable structure 40 to brush the surface of the grinding roller with the bristle 33 on the cleaning roller 32 automatically when starting the grinding roller, realize the high -efficient automatic cleaning. Meanwhile, the clamping design between the cleaning roller 32 and the installation position not only allows the cleaning roller 32 to change position flexibly between different adjacent grinding rollers, but also supports quick dismounting, greatly improves the convenience and maintenance efficiency of operation. This design not only utilizes the power of the grinding roller to complete the cleaning work, reduces manual intervention, reduces the work burden of the operator and improves the cleaning efficiency;Through the flexibility and maintainability of the cleaning roller 32, adapt to various work demands, simplify the daily maintenance process, reduce the maintenance cost. Most importantly, the automatic cleaning process avoids the operator to contact the equipment in operation directly, significantly improves the safety of operation.

[0065] The utility model has been described above in conjunction with the drawings, obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various non-essential improvements of the method concept and technical scheme of the utility model are adopted, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. A conductive paste three-roll mill having a cleaning mechanism (30), characterized in that, The utility model relates to a kind of cleaning mechanism and roll-pressing mechanism for material feeding table. Machine table (10), the upper end forms horizontal material feeding channel (11); Rolling mechanism (20), including three parallel and sequentially arranged between the two sides of material feeding channel (11) roll shaft (21) and the driving device for driving roll shaft (21); Cleaning mechanism (30), including two installation plates (31) symmetrically arranged on the upper side of the two ends of roll shaft (21) and located on the side wall of material feeding channel (11), the cleaning roller (32) detachably fixed between the two installation plates (31), the outer circumferential side of the cleaning roller (32) is evenly distributed with a plurality of bristles (33); Wherein: The installation plate (31) is vertically slidingly arranged on the side wall of material feeding channel (11) and has two installation positions corresponding to the middle positions of the adjacent roll shafts (21), the two ends of the cleaning roller (32) form an installation structure that is clamped and matched with the installation position, and the side wall of the material feeding channel (11) is provided with an adjusting structure (40) for adjusting the height of the installation plate (31) so that the bristles (33) on the cleaning roller (32) contact or move away from the outer surface of the adjacent roll shaft (21).

2. A conductive paste three-roll mill having a cleaning mechanism (30) as claimed in claim 1, wherein, The two sides of the installation plate (31) are symmetrically extended to form two fixed edges (311) along the extension direction of the material feeding channel (11), the side wall of the material feeding channel (11) is symmetrically provided with two support edges (111) opposite to the positions of the fixed edges (311), the upper end surface of the support edge (111) is vertically provided with a first positioning shaft (112), the outer circumferential side of the first positioning shaft (112) is sleeved with a first supporting spring (113), and the upper and lower ends of the first supporting spring (113) are movably contacted with the lower end surface of the fixed edge (311) and the upper end surface of the support edge (111) respectively.

3. A conductive paste three-roll mill having a cleaning mechanism (30) as claimed in claim 2, wherein, The side of the installation plate (31) away from the side wall of the material feeding channel (11) is provided with a fixing seat (41) at a position close to the upper end, the material feeding channel (11) is provided with an adjusting seat (42) opposite to the position of the fixing seat (41) at the upper end of the installation plate (31), the adjusting seat (42) is threadedly connected with a vertically distributed adjusting bolt (43) at the center position, and the lower end of the adjusting bolt (43) penetrates through the lower end of the adjusting seat (42) and movably contacts the upper end surface of the fixing seat (41).

4. A conductive paste three-roll mill having a cleaning mechanism (30) as claimed in claim 3, wherein, The outer circumferential side of the adjusting bolt (43) is sleeved with a second supporting spring (44), and the upper and lower ends of the second supporting spring (44) are movably contacted with the lower end surface of the adjusting seat (42) and the upper end surface of the fixing seat (41) respectively.

5. A conductive paste three-roll mill having a cleaning mechanism (30) as claimed in claim 3, wherein, The upper end of the adjusting bolt (43) is provided with a cap portion (45) for easy gripping, and the outer circumferential side of the cap portion (45) is provided with anti-skid lines.

6. A conductive paste three roll mill having a cleaning mechanism (30) as claimed in claim 1, wherein, The side wall of the material feeding channel (11) is provided with two parallel and vertically distributed guide rails (50), the guide rails (50) are slidingly provided with a sliding connection seat (51), and the back surface of the installation plate (31) is fixed on the sliding connection seat (51) to realize vertical guidance.

7. A conductive paste three roll mill having a cleaning mechanism (30) as claimed in claim 1, wherein, The lower end of the rolling mechanism and the bottom surface of the material passage (11) form a gap, and the gap is provided with a recovery disc (60) with an opening larger than the covering area of the rolling mechanism.

8. A conductive paste three roll mill having a cleaning mechanism (30) as claimed in claim 1, wherein, The two ends of the cleaning roller (32) protrude along the axial direction to form two clamping ends (321), and the outer circumferential side of the clamping end (321) is recessed inward to form a plurality of limiting grooves (322) distributed along the axial direction. One of the two mounting positions on the side wall of the material passage (11) is a hollow sleeve (70) protrudingly arranged, and the inner side hollow portion of the sleeve (70) protrudes around the circumferential side to form a first limiting block (71) embedded with the limiting groove (322). The other two mounting positions on the other side are a connecting structure (80) with a U-shaped opening, and the inner side bottom of the connecting structure (80) forms a clamping groove (81) in a semicircular shape and adapted to the diameter of the clamping end (321). The upper side of the clamping groove (81) forms an opening groove (82) with a side distance equal to the diameter of the clamping groove (81), and the clamping groove (81) is provided with a second limiting block (83) embedded with the limiting groove (322).

9. A conductive paste three roll mill having a cleaning mechanism (30) as claimed in claim 1, wherein, The cleaning roller (32) comprises a roller core (323) and a roller sleeve (324), and the inner side of the roller sleeve (324) forms a hollow clamping space (325) distributed along the axial direction. The bristles (33) are nylon bristles (33) and are fixed to the outer circumferential side of the roller sleeve (324). The clamping space (325) is provided with a plurality of flow guide apertures (326) located between adjacent bristles (33). One end of the roller sleeve (324) is provided with a liquid injection port (327) communicating with the clamping space (325). The liquid injection port (327) is connected with an external cleaning liquid pumping device for inputting cleaning liquid into the clamping space (325).

10. A conductive paste three-roll mill having a cleaning mechanism (30) as claimed in claim 9, wherein, The flow guide apertures (326) are distributed along the arc surface of the outer circumferential side of the roller sleeve (324) and are uniformly arranged around the circumferential surface of the same position of the roller sleeve (324).

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