A tabletting device for powder coating production

Abstract

The present invention discloses a tableting device for powder coating production, and relates to a tableting device comprising an equipment frame, a panel fixedly connected to the equipment frame, a driving roller and a driven roller rotatably connected to the panel, the driving roller and the driven roller being connected via a gear transmission, the driving roller and the driving motor being connected via a gear transmission, the driving roller and the driven roller both comprising a rotating extrusion roller body, the outer edges of the extrusion roller bodies being provided with cooling channels for supplying cool air, and a cooling fan being further provided on the equipment frame for supplying air to the cooling channels. By providing cooling channels on the driving roller and the driven roller, the cooling airflow provided by the cooling fan can be injected into the cooling channels in real time. Based on the structural arrangement of the air distribution mechanism, the cooling airflow can be directly injected into the extrusion surface between the driving roller and the driven roller, thereby avoiding insufficient cooling and providing a guarantee for the continuous tableting of the powder coating.

Description

Technical Field

[0001] The invention relates to a tablet pressing device, in particular to a tablet pressing device for powder coating production. Background Art

[0002] Powder coating is completely different from general coatings. It exists in the form of fine powder. Since no solvent is used, it is called powder coating. When using powder coating, the solvent pollution index is zero. Oversprayed powder coating can be fully recycled through the recycling system. Therefore, powder coating can minimize the degree of environmental pollution, save resources and production costs. The production of powder coating includes several steps, and each is completed in independent equipment.

[0003] During the powder coating production process, a tableting device is required to extrude the molten powder coating into sheets. However, due to the high raw material temperature during operation, the tableting device is prone to sticking to the extrusion rollers. Traditionally, a separate cooling step has been implemented during the process to cool the entire coating. This process is complex and difficult to achieve effective cooling. Therefore, those skilled in the art have proposed a tableting device for powder coating production to address the aforementioned issues. Summary of the Invention

[0004] The object of the present invention is to provide a tabletting device for powder coating production to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A tabletting device for powder coating production includes an equipment frame, a panel fixedly connected to the equipment frame, a driving roller and a driven roller arranged in parallel rotatably connected to the panel, the driving roller and the driven roller are connected by a gear transmission, the driving roller is connected to a drive motor by a gear transmission, the driving roller and the driven roller both include a rotating extrusion roller body, cooling channels for supplying cold air are arranged on the outer edges of the extrusion roller body, end covers are fixedly connected to both ends of the extrusion roller body, air inlet holes connected to the cooling channels are opened on the end covers, and a cooling fan for supplying air to the air inlet holes is also provided on the equipment frame.

[0007] As a further solution of the present invention: the cooling fan is fixed to the side of the equipment frame, the cooling fan outlet is connected to the air intake duct, the end of the air intake duct is fixedly connected to the air distribution mechanism, and the air outlet of the air distribution mechanism is respectively connected to the air intake holes on the active roller and the driven roller.

[0008] As a further solution of the present invention: the valve distribution mechanism includes a conduit fixedly connected to the air intake pipe, a telescopic tube is slidably connected in the conduit, a spring is connected between the two telescopic tubes, the spring is in a compressed state, and an arc-shaped chuck is fixedly connected to the outside of the telescopic tube, the arc-shaped chuck is engaged with the air inlet hole position of the end cover, and a plurality of air outlet holes are distributed on the side where the arc-shaped chuck is engaged with the end cover.

[0009] As a further solution of the present invention: when the active roller and the driven roller rotate, at least one air outlet is connected to the air inlet.

[0010] As a further solution of the present invention: a plurality of partition plates are fixedly connected to the inner side of the end cover, the axial center positions of the active roller and the driven roller are fixedly connected to positioning shafts, and at least two adjacent partition plates are clearance-matched with the positioning shafts.

[0011] As a further solution of the present invention: the partition plates are all clearance-matched with the positioning shaft.

[0012] As a further solution of the present invention: two conveying rollers are rotatably connected to the equipment frame, a conveyor belt is provided between the conveying rollers, and a roller shaft of one of the conveying rollers is transmission-connected to a conveying motor.

[0013] As a further solution of the present invention: the enclosure is fixedly connected with an inclined discharge guide located below the active roller, and the enclosure is fixedly connected with an inclined feed guide located above the active roller, and the inclined feed guide is arranged perpendicular to the active roller and the driven roller.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a simple structure and good use effect. By opening a cooling channel on the active roller and the driven roller, the cooling airflow provided by the cooling fan can be injected into the cooling channel in real time, thereby cooling the powder coating in the fastest and most efficient way, avoiding the adhesion of the coating due to excessive temperature. At the same time, based on the structural setting of the air distribution mechanism, the cooling airflow can be directly injected into the extrusion surface between the active roller and the driven roller, avoiding the situation of insufficient cooling, and providing a guarantee for the continuous tableting of the powder coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a tabletting device for powder coating production;

[0016] Figure 2 This is a partially enlarged structural diagram of a tabletting device for powder coating production;

[0017] Figure 3 This is a partial cross-sectional structural diagram of a gas distribution mechanism in a tableting device for powder coating production;

[0018] Figure 4This is a schematic diagram of the connection structure between a telescopic tube and an arc-shaped chuck in a tabletting device for powder coating production;

[0019] Figure 5 This is a schematic diagram of the structure of an extrusion roller in a tableting device for powder coating production;

[0020] Figure 6 This is a schematic diagram of the structure of the end cover of a tablet pressing device for powder coating production;

[0021] Figure 7 A schematic structural diagram of an end cover in a tabletting device for powder coating production from another perspective;

[0022] In the figure: 1. Equipment frame; 2. Enclosure; 3. Active roller; 4. Driven roller; 5. Extrusion roller body; 6. Cooling channel; 7. End cover; 8. Air inlet; 9. Cooling fan; 10. Air inlet duct; 11. Gas distribution mechanism; 12. Conduit; 13. Telescopic tube; 14. Spring; 15. Arc chuck; 16. Air outlet; 17. Partition plate; 18. Positioning shaft; 19. Conveyor roller; 20. Conveyor belt; 21. Conveyor motor; 22. Inclined discharge guide; 23. Inclined feed guide. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] Example 1: Please refer to Figure 1 and Figure 5 A tabletting device for powder coating production includes an equipment frame 1, a surrounding plate 2 is fixedly connected to the equipment frame 1, and a driving roller 3 and a driven roller 4 arranged in parallel are rotatably connected to the surrounding plate 2. The driving roller 3 and the driven roller 4 are connected by a gear transmission, and the driving roller 3 is connected to the driving motor by a gear transmission. The driving roller 3 and the driven roller 4 both include a rotating extrusion roller body 5, and cooling channels 6 for supplying cold air are distributed at the outer edges of the extrusion roller body 5. End covers 7 are fixedly connected to both ends of the extrusion roller body 5, and air inlet holes 8 connected to the cooling channels 6 are opened on the end covers 7. A cooling fan 9 for supplying air to the air inlet holes 8 is also provided on the equipment frame 1.

[0028] During use, the melted powder coating to be sheeted is placed directly between the active roller 3 and the driven roller 4. The drive motor is turned on, which drives the active roller 3 and the driven roller 4 to rotate continuously, forming an extrusion surface between the active roller 3 and the driven roller 4. As the coating passes through, it is extruded into sheets. To prevent the high temperature of the coating from sticking to the outside of the active roller 3 or the driven roller 4, the cooling fan 9 is turned on. The cooling fan 9 blows cold air into the air inlet 8, and then flows out through the cooling channel 6. Since the cooling air flow directly cools the outer edge of the extrusion roller body 5, it cools the extruded coating most efficiently, reducing the probability of the coating sticking to the outside of the extrusion roller body 5.

[0029] The cooling fan 9 is fixed to the side of the equipment frame 1, and the air outlet of the cooling fan 9 is connected to the air intake pipe 10. The end of the air intake pipe 10 is fixedly connected to the air distribution mechanism 11, and the air outlet 16 of the air distribution mechanism 11 is respectively connected to the air intake holes 8 on the active roller 3 and the driven roller 4.

[0030] The cold air blown out by the cooling fan 9 flows into the interior of the air distribution mechanism 11 through the air intake duct 10. The air distribution mechanism 11 distributes the cold air flow to different cooling channels 6 according to demand. The air distribution mechanism 11 only needs to ensure that the cold air flow can flow into the interior of the cooling channel 6. It is not limited to which specific cooling channel 6 it flows into. It can be the cooling channel 6 on the inside or the cooling channel 6 on the outside, and the cold air flow can also be supplied to all cooling channels 6 at the same time.

[0031] See also Figure 2 、 Figure 3 and Figure 4 The valve mechanism 11 includes a conduit 12 fixedly connected to the intake duct 10. A telescopic tube 13 is slidably connected within the conduit 12. A spring 14 is connected between the two telescopic tubes 13 and is compressed. Curved chucks 15 are fixedly connected to the outside of each telescopic tube 13. These chucks 15 engage with the air inlet 8 of the end cap 7. Several air outlet holes 16 are uniformly distributed on the side where the curved chucks 15 engage with the end cap 7. When the active roller 3 and the driven roller 4 rotate, at least one air outlet hole 16 communicates with the air inlet 8, ensuring that the cool air can always flow into the cooling channel 6.

[0032] When the valve mechanism 11 disclosed in the accompanying drawings is used, the spring force of the spring 14 will cause the two telescopic tubes 13 to move outward, thereby causing the arc-shaped chuck 15 to engage with the end cover 7. The cold air flow can enter the adjacent cooling channel 6 more quickly through the air outlet 16 of the arc-shaped chuck 15. Due to the presence of the spring 14, the arc-shaped chuck 15 will fit tightly against the end cover 7, reducing the probability of cold air flow overflow and directing more cold air flow into the cooling channel 6. The active roller 3 and the driven roller 4 are composed of a split extrusion roller body 5 and an end cover 7, which can be better manufactured. A sealing structure, such as an O-ring, is provided between the end cover 7 and the extrusion roller body 5 to ensure that the cooling air flow does not escape, and the end cover 7 and the extrusion roller body 5 can be connected by bolts.

[0033] See also Figure 6 and Figure 7, a number of partition plates 17 are fixedly connected to the inner side of the end cover 7, and a positioning shaft 18 is fixedly connected to the axial center position of the active roller 3 and the driven roller 4, and at least two adjacent partition plates 17 are clearance-matched with the positioning shaft 18. The setting of the partition plates 17 allows the airflow to be better confined to the cooling channel 6 at the extrusion surface position, achieving the most efficient cooling and avoiding the possibility of coating adhesion. When there are gaps between the partition plates 17, although more cooling airflow will still flow into the cooling channel 6 of the extrusion surface, some cooling airflow will still flow out through other cooling channels 6. When at least two adjacent partition plates 17 are clearance-matched with the positioning shaft 18, the airflow can basically be guaranteed to flow through the extrusion surface. The clearance fit is to enable the extrusion roller body 5 and the end cover 7 to be quickly assembled. Since the clearance of the clearance fit is still very small, it will not cause chaotic flow of the cooling airflow.

[0034] The partition plates 17 are all in clearance fit with the positioning shafts 18. At this time, the cooling airflow basically flows completely through the cooling channels 6 of the extrusion surface.

[0035] The equipment frame 1 is rotatably connected to two conveyor rollers 19, and a conveyor belt 20 is provided between the conveyor rollers 19. The roller shaft of one of the conveyor rollers 19 is connected to a conveyor motor 21. The arrangement of the conveyor belt 20 can quickly guide the extruded raw materials to avoid accumulation.

[0036] The enclosure 2 is fixedly connected to an inclined discharge guide plate 22 located below the active roller 3, and the enclosure 2 is fixedly connected to an inclined feed guide plate 23 located above the active roller 3. The inclined feed guide plate 23 is arranged perpendicular to the active roller 3 and the driven roller 4. The inclined feed guide plate 23 prevents the molten paint from flowing out of the gap.

[0037] Example 2: This example differs from the previous example in that it uses liquid cooling, which is more efficient, rather than air cooling, to cool the extrusion roller 5. In this case, the cooling fan 9 is replaced with a liquid pump, and a return tank is provided to hold the coolant. The liquid pump directs the coolant into the various cooling channels 6. The corresponding return piping and other configurations are conventional techniques for those skilled in the art and are not described in detail here.

[0038] Working Principle: During operation, the melted powder coating to be sheeted is placed directly between the active roller 3 and the passive roller 4. The drive motor is turned on, driving the active and passive rollers 3 and 4 to rotate continuously, forming an extrusion surface between them. As the coating passes through, it is extruded into sheets. To prevent the high-temperature coating from adhering to the outside of the active or passive rollers 3 or 4, the cooling fan 9 is turned on. Cooling air is blown into the air inlet 8 and then out through the cooling channel 6. Because the cooling airflow directly cools the outer edge of the extrusion roller 5, it effectively cools the extruded coating and reduces the chance of adhesion. The cool air from the cooling fan 9 flows through the air inlet duct 10 into the air distribution mechanism 11, which distributes the cool airflow to different cooling channels 6 as needed. The air distribution mechanism 11 only needs to ensure that the cool airflow flows into the cooling channels 6, and is not limited to a specific cooling channel 6. It can flow to the inner or outer cooling channels 6, or even all cooling channels 6 simultaneously. When the valve mechanism 11 disclosed in the accompanying drawings is used, the spring force of the spring 14 causes the two telescopic tubes 13 to move outward, thereby engaging the arc-shaped chuck 15 with the end cover 7. The cold airflow can enter the adjacent cooling channel 6 more quickly through the air outlet 16 of the arc-shaped chuck 15. Due to the presence of the spring 14, the arc-shaped chuck 15 will fit tightly against the end cover 7, reducing the probability of cold airflow overflow and directing more cold airflow into the cooling channel 6. The active roller 3 and the driven roller 4 are composed of a split extrusion roller body 5 and an end cover 7, which can be better manufactured. A sealing structure, such as an O-ring, is provided between the end cover 7 and the extrusion roller body 5 to ensure that the cooling airflow does not escape. The provision of the partition plates 17 allows the airflow to be better confined within the cooling channel 6 at the extrusion surface, achieving the most efficient cooling and avoiding the possibility of coating adhesion. When there are gaps between the partition plates 17, although more cooling airflow will still flow into the cooling channel 6 at the extrusion surface, some cooling airflow will still flow out through other cooling channels 6. When the clearance fit between at least two adjacent partition plates 17 and the positioning shaft 18 is limited, the airflow can basically be guaranteed to flow through the extrusion surface. The clearance fit is to enable the extrusion roller 5 and the end cover 7 to be quickly assembled. Since the clearance of the clearance fit is still very small, it will not cause chaotic flow of the cooling airflow. The provision of the conveyor belt 20 can quickly guide the extruded raw materials to avoid accumulation. The inclined feed guide 23 prevents the molten coating from flowing out of the gap.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0040] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A tabletting device for powder coating production, comprising an equipment frame (1), a panel (2) fixedly connected to the equipment frame (1), a driving roller (3) and a driven roller (4) arranged in parallel rotatably connected to the panel (2), the driving roller (3) and the driven roller (4) being connected via a gear transmission, and the driving roller (3) and the driving motor being connected via a gear transmission, characterized in that: The active roller (3) and the driven roller (4) both include a rotating extrusion roller body (5), and cooling channels (6) for supplying cooling air are distributed at the outer edges of the extrusion roller body (5). End covers (7) are fixedly connected to both ends of the extrusion roller body (5), and air inlet holes (8) communicating with the cooling channels (6) are provided on the end covers (7). A cooling fan (9) for supplying air to the air inlet holes (8) is also provided on the equipment frame (1); The cooling fan (9) is fixed to the side of the equipment frame (1), and the air outlet of the cooling fan (9) is connected to the air inlet pipe (10). The end of the air inlet pipe (10) is fixedly connected to the air distribution mechanism (11). The air outlet (16) of the air distribution mechanism (11) is respectively connected to the air inlet holes (8) on the active roller (3) and the driven roller (4). The air distribution mechanism (11) includes a conduit (12) fixedly connected to the air inlet pipe (10), a telescopic tube (13) is slidably connected in the conduit (12), a spring (14) is connected between the two telescopic tubes (13), and the spring (14) is in a compressed state. The outer sides of the telescopic tubes (13) are fixedly connected to the arc chuck (15), and the arc chuck (15) is engaged with the air inlet hole (8) of the end cover (7). A plurality of air outlet holes (16) are evenly distributed on the side where the arc chuck (15) is engaged with the end cover (7).

2. The tabletting device for powder coating production according to claim 1, characterized in that: When the active roller (3) and the driven roller (4) rotate, at least one air outlet (16) is connected to the air inlet (8).

3. The tabletting device for powder coating production according to claim 2, characterized in that: A plurality of partition plates (17) are fixedly connected to the inner side of the end cover (7), and a positioning shaft (18) is fixedly connected to the axis center position of the active roller (3) and the driven roller (4), and at least two adjacent partition plates (17) are clearance-fitted with the positioning shaft (18).

4. The tabletting device for powder coating production according to claim 3, characterized in that: The partition plates (17) are all clearance-matched with the positioning shafts (18).

5. The tabletting device for powder coating production according to any one of claims 1 to 4, characterized in that: Two conveying rollers (19) are rotatably connected to the equipment frame (1), and a conveying belt (20) is sleeved between the conveying rollers (19). The roller shaft of one of the conveying rollers (19) is in transmission connection with a conveying motor (21).

6. The tabletting device for powder coating production according to any one of claims 1 to 4, characterized in that: The enclosure (2) is fixedly connected to an inclined discharge guide plate (22) located below the active roller (3), and the enclosure (2) is fixedly connected to an inclined feed guide plate (23) located above the active roller (3). The inclined feed guide plate (23) is arranged perpendicular to the active roller (3) and the driven roller (4).

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