Tabletting device for powder coating production

Abstract

The invention discloses a tabletting device for powder coating production, and relates to a tabletting device which comprises an equipment rack, a coaming is fixedly connected to the equipment rack, a driving roller and a driven roller which are arranged in parallel are rotationally connected to the coaming and are in transmission connection through a gear, the driving roller is in transmission connection with a driving motor through a gear, and the driving motor is in transmission connection with the driven roller through a gear. The driving roller and the driven roller each comprise a rotary extrusion roller body, cooling channels for cold air to flow are evenly distributed on the outer edges of the extrusion roller bodies, and a cooling fan for supplying air to the cooling channels is further arranged on the equipment rack. The cooling channels are formed in the driving roller and the driven roller, cooling airflow provided by the cooling fan can be poured into the cooling channels in real time, the cooled airflow can be directly poured into the position between the extrusion faces between the driving roller and the driven roller based on the structural arrangement of the air distribution mechanism, and the situation that cooling is not in place is avoided; a guarantee is provided for continuous tabletting 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 coating. It exists in the state 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 and save resources and production costs. The production of powder coating includes several steps, which are completed in independent equipment respectively.

[0003] In the process of powder coating processing, a tableting device is needed to extrude the molten powder coating into sheets. Since the raw material temperature is too high when the tableting machine is used, it is easy to adhere to the extrusion roller. The traditional method is generally to set an independent cooling step during the processing to cool the coating as a whole. The steps are complicated and the cooling effect is difficult to ensure. For this reason, those skilled in the art have proposed a tableting device for powder coating production to solve the problems raised in the above background. 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: A tabletting device for powder coating production comprises an equipment frame, a panel is fixedly connected to the equipment frame, a driving roller and a driven roller are rotatably connected to the panel in parallel, the driving roller and the driven roller are connected via a gear transmission, the driving roller and the driving motor are connected via a gear transmission, the driving roller and the driven roller both comprise a rotating extrusion roller body, cooling channels for supplying cooling air are evenly distributed at 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 arranged on the equipment frame.

[0006] 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.

[0007] 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 of the end cover, and a plurality of air outlet holes are evenly distributed on one side of the arc-shaped chuck engaged with the end cover.

[0008] 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.

[0009] As a further solution of the present invention: a plurality of partition plates are fixedly connected to the inner side of the end cover, a positioning shaft is fixedly connected to the axial center position of the active roller and the driven roller, and at least two adjacent partition plates are clearance-matched with the positioning shaft.

[0010] As a further solution of the present invention: the partition plates are all clearance-matched with the positioning shaft.

[0011] As a further solution of the present invention: two conveying rollers are rotatably connected to the equipment frame, a conveying belt is sleeved between the conveying rollers, and a roller shaft of one of the conveying rollers is drivingly connected to a conveying motor.

[0012] As a further solution of the present invention: the enclosure is fixedly connected with an inclined discharge guide plate located below the active roller, and the enclosure is fixedly connected with an inclined feed guide plate located above the active roller, and the inclined feed guide plate is vertically arranged to the active roller and the driven roller.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 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 poured into the cooling channel in real time, so as to cool 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 valve mechanism, the cooling airflow can be directly poured into the extrusion surface between the active roller and the driven roller, avoiding the situation of insufficient cooling, and providing guarantee for the continuous tableting of the powder coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of a tablet pressing device for powder coating production; Figure 2 It is a partially enlarged structural schematic diagram of a tablet pressing device for powder coating production; Figure 3 It is a partial cross-sectional structural schematic diagram of a gas distribution mechanism in a tablet pressing device for powder coating production; Figure 4 It is a schematic diagram of the connection structure between a telescopic tube and an arc-shaped chuck in a tablet pressing device for powder coating production; Figure 5It is a schematic diagram of the structure of an extrusion roller body in a tablet pressing device for powder coating production; Figure 6 This is a schematic diagram of the structure of an end cover in a tablet pressing device for powder coating production; Figure 7 A schematic structural diagram of an end cover in a tablet pressing device for powder coating production from another perspective; 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 plate; 23. Inclined feed guide plate. DETAILED DESCRIPTION

[0015] 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.

[0016] 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 positions or positional relationships based on the positions 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", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like 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.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0019] 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 gear transmission, and the driving roller 3 is connected to the driving motor by gear transmission. The driving roller 3 and the driven roller 4 both include a rotating extrusion roller body 5, and cooling channels 6 for cooling air flow are evenly distributed at the outer edges of the extrusion roller body 5. End covers 7 are fixedly connected at 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.

[0020] When in use, the melted powder coating to be pressed is directly placed between the active roller 3 and the driven roller 4, and the driving motor is turned on. The driving motor drives the active roller 3 and the driven roller 4 to rotate continuously, and an extrusion surface is formed between the active roller 3 and the driven roller 4. When the coating passes through, it will be extruded into a sheet. In order to prevent the coating from sticking to the outside of the active roller 3 or the driven roller 4 due to the high temperature, 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 airflow directly cools the outer edge of the extrusion roller body 5, the extruded coating is cooled most efficiently, reducing the probability of the coating sticking to the outside of the extrusion roller body 5.

[0021] 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 duct 10, and the end of the air intake duct 10 is fixedly connected to the air distribution mechanism 11, and the air outlet holes 16 of the air distribution mechanism 11 are respectively connected to the air intake holes 8 on the active roller 3 and the driven roller 4.

[0022] 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. The cold air flow can also be supplied to all cooling channels 6 at the same time.

[0023] See also Figure 2 , Figure 3 and Figure 4The gas distribution mechanism 11 includes a conduit 12 fixedly connected to the air intake 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 with arc-shaped chucks 15, and the arc-shaped chucks 15 are engaged with the air inlet 8 of the end cover 7. A plurality of air outlet holes 16 are evenly distributed on the side where the arc-shaped chucks 15 engage with the end cover 7. When the active roller 3 and the driven roller 4 rotate, at least one air outlet hole 16 is connected with the air inlet hole 8. Ensure that the cold air flow can always flow into the cooling channel 6.

[0024] When the valve mechanism 11 disclosed in the attached drawings is used, the spring force of the spring 14 will cause the two telescopic tubes 13 to move outward, so that the arc-shaped chuck 15 is engaged with the end cover 7, and the cold air flow can enter the cooling channel 6 adjacent to it more quickly through the air outlet 16 of the arc-shaped chuck 15, and due to the presence of the spring 14, the arc-shaped chuck 15 will fit the end cover 7 tightly, reducing the probability of cold air flow overflow, and more cold air flow is introduced 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 set between the end cover 7 and the extrusion roller body 5 to ensure that the cooling air flow will not escape, and the end cover 7 and the extrusion roller body 5 can be connected by bolts.

[0025] See also Figure 6 and Figure 7 , 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 axial 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 enables the airflow to be better confined in the cooling channel 6 at the position of the extrusion surface, and achieves cooling most efficiently to avoid 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.

[0026] The partition plates 17 are all clearance-matched with the positioning shaft 18. At this time, the cooling airflow basically flows completely through the cooling channel 6 of the extrusion surface.

[0027] The equipment frame 1 is rotatably connected to two conveying rollers 19, and a conveying belt 20 is sleeved between the conveying rollers 19, and a roller shaft of one of the conveying rollers 19 is drivingly connected to a conveying motor 21. The arrangement of the conveying belt 20 can quickly guide the raw materials extruded into sheets to avoid accumulation.

[0028] The enclosure 2 is fixedly connected with an inclined discharge guide plate 22 located below the active roller 3, and the enclosure 2 is fixedly connected with an inclined feed guide plate 23 located above the active roller 3. The inclined feed guide plate 23 is vertically arranged to the active roller 3 and the driven roller 4, and the inclined feed guide plate 23 prevents the molten paint from flowing out of the gap.

[0029] Embodiment 2: The difference between this embodiment and the previous embodiment is that this embodiment does not use air cooling to cool the extrusion roller 5, but uses liquid cooling, which is more efficient. At this time, the cooling fan 9 needs to be replaced with a liquid pump, and a reflux box is provided to hold the coolant, and the coolant is introduced into different cooling channels 6 through the liquid pump. The corresponding reflux pipe and other settings are conventional technologies for technicians in this technical field and will not be described in detail here.

[0030] Working principle: When in use, the melted powder coating to be pressed is directly placed between the active roller 3 and the driven roller 4, and the driving motor is turned on. The driving motor drives the active roller 3 and the driven roller 4 to rotate continuously, and an extrusion surface is formed between the active roller 3 and the driven roller 4. When the coating passes through, it will be extruded into a sheet. In order to prevent the coating from sticking to the outside of the active roller 3 or the driven roller 4 due to the high temperature, 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, the extruded coating is cooled most efficiently, reducing the probability of the coating sticking to the outside of the extrusion roller body 5. The cold air blown out by the cooling fan 9 flows into the inside of the air distribution mechanism 11 through the air intake pipe 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 inside of the cooling channel 6, and does not limit which 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 can also supply the cold air flow to all cooling channels 6 at the same time. When the valve mechanism 11 disclosed in the attached drawings is used, the spring force of the spring 14 will cause the two telescopic tubes 13 to move outward, so that the arc chuck 15 is engaged with the end cover 7, and the cold air flow can enter the cooling channel 6 adjacent to it more quickly through the air outlet 16 of the arc chuck 15, and due to the presence of the spring 14, the arc chuck 15 will fit the end cover 7 tightly, reducing the probability of cold air flow overflow, and more cold air flow is introduced 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, and a sealing structure, such as an O-ring, is set between the end cover 7 and the extrusion roller body 5 to ensure that the cooling air flow does not escape. The setting of the partition plate 17 allows the airflow to be better confined in the cooling channel 6 at the extrusion surface position, achieving the most efficient cooling and avoiding the possibility of paint adhesion. When there is a gap 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 limited to a clearance fit 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. The setting of the conveyor belt 20 can quickly guide the extruded raw materials into sheets to avoid accumulation. The inclined feed guide plate 23 prevents the molten paint from flowing out of the gap.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes 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, 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 evenly 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). The equipment frame (1) is also provided with a cooling fan (9) for supplying air to the air inlet holes (8).

2. The tableting device for powder coating production according to claim 1, characterized in that: The cooling fan (9) is fixed to the side of the equipment frame (1); the air outlet of the cooling fan (9) is connected to an air intake duct (10); the end of the air intake duct (10) is fixedly connected to an air distribution mechanism (11); 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).

3. The tableting device for powder coating production according to claim 2, characterized in that: The gas distribution mechanism (11) comprises a guide tube (12) fixedly connected to the air intake pipe (10), a telescopic tube (13) being slidably connected inside the guide tube (12), a spring (14) being connected between the two telescopic tubes (13), the spring (14) being in a compressed state, an arc-shaped chuck (15) being fixedly connected to the outside of the telescopic tubes (13), the arc-shaped chuck (15) being engaged with the air intake hole (8) of the end cover (7), and a plurality of air outlet holes (16) being evenly distributed on one side of the arc-shaped chuck (15) engaged with the end cover (7).

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

5. The tableting 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 axial center positions 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).

6. The tableting device for powder coating production according to claim 5, characterized in that: The partition plates (17) are all clearance-matched with the positioning shafts (18).

7. The tableting device for powder coating production according to any one of claims 1 to 6, characterized in that: Two conveying rollers (19) are rotatably connected to the equipment frame (1), a conveying belt (20) is sleeved between the conveying rollers (19), and a roller shaft of one of the conveying rollers (19) is drivingly connected to a conveying motor (21).

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