Extruder for pure epoxy thermosetting powder coating

Abstract

The invention relates to the field of pure epoxy type thermosetting powder coating processing, and discloses a pure epoxy type thermosetting powder coating extruder which comprises an extrusion cylinder and a feeding cylinder, supports are supported at the two ends of the lower portion of the extrusion cylinder, the end of the extrusion cylinder is connected with an extrusion pipe, an extrusion structure is arranged on the extrusion cylinder, and the feeding cylinder is connected with the extrusion pipe. A feeding barrel is arranged above the left side of the extrusion barrel, a feeding hopper is installed in the feeding barrel, in the process of feeding into the feeding barrel, a certain effect of preventing dust from flying out can be achieved, in the feeding process, suction force is generated in the feeding barrel through a suction structure, in this way, dust generated in the feeding process can be better sucked in the feeding process, and the feeding efficiency is improved. And meanwhile, the suction hole is formed in the feeding hopper, dust generated in the feeding process can be sucked through the flushing hole in the bottom gluing, stacking and discharging process in the feeding hopper, the dust suction effect is better, and therefore the working environment quality is better improved, and coating waste is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of processing pure epoxy thermosetting powder coatings, and in particular to an extruder for pure epoxy thermosetting powder coatings. Background Technology

[0002] Pure epoxy thermosetting powder coating is a solid powder coating that uses thermosetting epoxy resin as the main film-forming substance, adds curing agent, pigment, filler and other additives, and forms a hard coating after being cured by heating; pure epoxy thermosetting powder coating is processed using an extruder; In existing extruders, the coating material can be efficiently discharged from the outlet through the rotation of the screw conveyor, thus improving the extrusion efficiency; the reciprocating movement and rotation of the stirring rod of the stirring component ensures that the coating material is fully mixed in the mixing tank, thus ensuring the uniformity of the coating. However, in actual processing, the coating needs to be added directly from the mixing tank. The coating then enters the extrusion cylinder for extrusion. This direct pouring of material from the mixing tank can cause dust to escape from the powder coating, resulting in waste of powder materials and a reduction in the quality of the working environment. Furthermore, the dust accumulation on the extruder makes it difficult to clean. Therefore, there are areas for improvement. Summary of the Invention

[0003] To address the problems mentioned in the background art, the present invention provides an extruder for pure epoxy thermosetting powder coatings.

[0004] The extruder for pure epoxy thermosetting powder coatings provided by this invention adopts the following technical solution: An extruder for pure epoxy thermosetting powder coatings includes an extrusion cylinder and a feeding cylinder. Supports are provided at both ends of the lower part of the extrusion cylinder. An extrusion tube is connected to the right end of the extrusion cylinder. An extrusion structure is provided on the extrusion cylinder. A feeding cylinder is located above the left side of the extrusion cylinder. A suction structure is provided inside the feeding cylinder. The bottom end of the feeding cylinder is connected to a feeding box. A sealing structure is provided inside the feeding box. The bottom end of the feeding box is connected to a feeding pipe, which is connected to the extrusion cylinder. A covering structure is provided at the top end of the feeding cylinder. The suction structure includes two embedded plates fixedly embedded in the feeding cylinder, the two embedded plates being distributed radially on the feeding cylinder, suction grooves being formed on the embedded plates, baffles being installed in the suction grooves, a cleaning structure being provided on the embedded plates, a suction cylinder being connected to the embedded plates, the suction cylinder being connected to the suction grooves, an installation strip being provided on the inner wall of the suction cylinder, a motor housing being installed on the installation strip, a rotating rod being connected to one end of the motor output shaft inside the motor housing, and an exhaust fan blade being provided on the rotating rod; A feeding hopper is provided at the upper edge of the inner wall of the feeding cylinder, and a ring of suction holes is opened on the inner wall of the feeding hopper near the upper edge.

[0005] Preferably, the cleaning structure includes two vertical grooves formed on the inner side of the embedded plate, the two vertical grooves being distributed on both sides of the baffle, lifting blocks being slidably arranged in the vertical grooves, each lifting block being connected to a connecting strip, the bottom ends of each set of two connecting strips being connected to the cleaning plate, brush bristles being provided on one side of the cleaning plate to be close to the baffle, and a transmission structure being provided between the cleaning plate and the rotating rod.

[0006] Preferably, the transmission structure includes a through groove formed in the embedded plate, the through groove being located in the middle above the baffle, an H-shaped plate moving through the through groove, the inner walls of both sides of the H-shaped plate being tightly attached to the embedded plate, a fixing strip being connected to the lower side of one side of the H-shaped plate, the bottom end of the fixing strip being connected to the cleaning plate, a crossbar being connected to the upper side of the other side of the H-shaped plate, one end of the rotating rod being connected to a U-shaped rod extending out of the suction cylinder, a transmission plate being movably sleeved on the U-shaped rod, and the top end of the transmission plate being movably sleeved on the crossbar.

[0007] Preferably, the sealing structure includes through slots formed above the left and right sides of the feeding box, and a sealing plate is movably inserted into each of the two through slots. One of the sealing plates has a slot on one side, and the other sealing plate has an insert strip. Guide rods are connected to both sides of the feeding box at both sides of each sealing plate. Movable blocks are connected to one end of the front and rear sides of each sealing plate, and the movable blocks are movably sleeved on the guide rods.

[0008] Preferably, the covering structure includes two sets of fixing blocks connected to the feeding cylinder. A rotating shaft passes through each of the two fixing blocks. An intermediate sleeve is fixedly sleeved on the rotating shaft. A connecting block is connected to the intermediate sleeve. One end of the connecting block is fastened to a cover plate by screws. The two cover plates are tightly closed in the feeding head. A handle is installed on the top of the cover plate. A driving structure is provided between the intermediate sleeve and the sealing plate.

[0009] Preferably, the driving structure includes an L-shaped strip connected to the middle of the side of the sealing plate away from the feeding box, a vertical plate is tightly fixed to the top of the L-shaped strip, a driving groove is opened on the vertical plate, two rotating handles are connected to the middle sleeve, and the two rotating handles are fixedly passed through the driving rod at the end away from the middle sleeve, and the driving rod moves through the driving groove.

[0010] Preferably, the extrusion structure includes a motor installed at the left end of the extrusion cylinder, and the output shaft of the motor is inserted into the extrusion cylinder and connected to a spiral transmission rod at one end.

[0011] In summary, the present invention has the following beneficial technical effects: 1. This invention, by setting a feeding hopper and a suction structure inside the feeding cylinder, and opening a ring of suction holes along the inner wall of the feeding hopper, can effectively prevent dust from escaping during the feeding process. Furthermore, the suction structure generates suction within the feeding cylinder during feeding, allowing for better extraction of dust generated during the feeding process. Simultaneously, the suction holes in the feeding hopper allow for the extraction of dust generated during the bottom coating and material accumulation process through flushing holes, resulting in better dust extraction and thus improving the quality of the working environment and reducing paint waste. 2. By setting a sealing structure, the present invention can perform sealing work in the feeding box when feeding material into the feeding cylinder, thereby separating the feeding cylinder and the extrusion cylinder. This avoids the air being drawn into the extrusion cylinder during the suction process, thereby reducing the dust suction quality. 3. By setting up a covering structure and a driving structure, the present invention can use the covering structure to block the dust in the outside air from entering the extrusion cylinder during the extrusion process, thus preventing the extrusion quality from being reduced. At the same time, when the covering structure is opened for feeding, the driving structure automatically drives the sealing structure to perform the sealing work, making the operation more labor-saving and convenient. When the covering structure is closed, the driving structure can automatically open the sealing structure, allowing the coating material fed into the feeding cylinder to be smoothly fed into the extrusion cylinder for extrusion. 4. By setting up a transmission structure and a cleaning structure, the present invention can automatically drive the cleaning structure to clean the baffle when the suction structure is started to suck up dust, thus ensuring that the dust suction can be carried out smoothly during the feeding process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an extruder for a pure epoxy thermosetting powder coating according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure inside the extrusion cylinder in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the feeding cylinder in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the feeding box in an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the feeding cylinder in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure at the embedded plate in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure in an embodiment of the present invention, showing the embedded plate located on one side of the suction cylinder; Figure 8This is a schematic diagram of the internal structure of the suction cylinder in an embodiment of the present invention.

[0013] Explanation of reference numerals in the attached drawings: 1. Extrusion cylinder; 2. Support; 3. Extrusion tube; 4. Feeding tube; 5. Feeding box; 6. Feeding cylinder; 7. Embedded plate; 8. Feeding hopper; 9. Suction hole; 10. Suction groove; 11. Baffle; 12. Suction cylinder; 13. Mounting strip; 14. Motor housing; 15. Exhaust fan blade; 16. Rotating rod; 17. Connecting strip; 18. Cleaning plate; 19. H-shaped plate; 20. Fixing strip; 21. Crossbar; 22. U-shaped rod 23. Transmission plate; 24. Through slot; 25. Sealing plate; 26. Slot; 27. Insert strip; 28. Moving block; 29. ​​Fixing block; 30. Rotating shaft; 31. Intermediate sleeve; 32. Connecting block; 33. Cover plate; 34. Handle; 35. L-shaped strip; 36. Vertical plate; 37. Drive slot; 38. Drive rod; 39. Rotating handle; 40. Motor; 41. Spiral transmission rod; 42. Vertical slot; 43. Lifting block; 44. Guide rod. Detailed Implementation

[0014] The following is in conjunction with the appendix Figures 1-8 The present invention will be described in further detail below.

[0015] Reference Figures 1-8 This invention discloses an extruder for pure epoxy thermosetting powder coatings, including an extrusion cylinder 1 and a feeding cylinder 6. The extrusion cylinder 1 is supported by brackets 2 at both ends below. The right end of the extrusion cylinder 1 is connected to an extrusion tube 3. An extrusion structure is provided on the extrusion cylinder 1. The feeding cylinder 6 is provided at the upper left side of the extrusion cylinder 1. A suction structure is provided inside the feeding cylinder 6. The bottom end of the feeding cylinder 6 is connected to a feeding box 5. A sealing structure is provided inside the feeding box 5. The bottom end of the feeding box 5 is connected to a feeding pipe 4. The feeding pipe 4 is connected to the extrusion cylinder 1. A covering structure is provided at the top of the feeding cylinder 6. The suction structure includes two embedded plates 7 fixedly embedded in the feeding cylinder 6. The two embedded plates 7 are distributed radially in the feeding cylinder 6. Suction grooves 10 are opened on the embedded plates 7. A baffle 11 is installed in the suction groove 10. The baffle 11 plays a role in blocking the coating and dust, preventing the dust from being directly drawn out of the feeding cylinder 6 from the suction groove 10. A cleaning structure is provided on the embedded plates 7. A suction cylinder 12 is connected to the embedded plates 7. The suction cylinder 12 is connected to the suction groove 10. An installation strip 13 is provided on the inner wall of the suction cylinder 12. A motor box 14 is installed on the installation strip 13. One end of the motor output shaft in the motor box 14 is connected to a rotating rod 16. An exhaust fan blade 15 is provided on the rotating rod 16. A feeding hopper 8 is provided at the upper edge of the inner wall of the feeding cylinder 6, and a ring of suction holes 9 is opened at the upper edge of the inner wall of the feeding hopper 8; The extrusion structure includes a motor 40 installed at the left end of the extrusion cylinder 1. The output shaft of the motor 40 is inserted into the extrusion cylinder 1 and connected to a screw transmission rod 41 at one end. During feeding, the coating is added directly from the feeding hopper 8 into the feeding cylinder 6. Under the cover of the feeding hopper 8 in the feeding cylinder 6, it can play a certain role in dust prevention, reducing the spread of dust to the external environment during the feeding process. During the feeding process, the motor in the motor box 14 drives the rotating rod 16 and the exhaust fan blade 15 to rotate, generating a suction force in the feeding cylinder 6, thereby sucking the dust generated during the feeding process into the feeding cylinder 6. When the coating accumulates at the bottom of the feeding hopper 8, making it impossible to suck the dust from the bottom of the feeding hopper 8, the dust can also be sucked out through the suction hole 9 on the upper edge of the inner wall of the feeding hopper 8, which greatly improves the quality of the working environment and reduces coating waste.

[0016] See Figures 5-8 The cleaning structure includes two vertical grooves 42 on the inner side of the embedded plate 7. The two vertical grooves 42 are distributed on both sides of the baffle 11. Lifting blocks 43 are slidably arranged in the vertical grooves 42. Each lifting block 43 is connected to a connecting strip 17. The bottom ends of each set of two connecting strips 17 are connected to the cleaning plate 18. Brush bristles that are close to the baffle 11 are provided on one side of the cleaning plate 18. A transmission structure is provided between the cleaning plate 18 and the rotating rod 16. The transmission structure includes a through groove formed in the embedded plate 7, located in the middle above the baffle 11. An H-shaped plate 19 moves through the through groove, with its inner walls on both sides pressed against the embedded plate 7. The H-shaped plate 19 acts as a shield for the through groove, preventing dust from being discharged. A fixing strip 20 is connected to the lower side of one side of the H-shaped plate 19, with its bottom end connected to the cleaning plate 18. A crossbar 21 is connected to the upper side of the other side of the H-shaped plate 19. One end of the rotating rod 16 is connected to a U-shaped rod 22 that extends out of the suction cylinder 12. A transmission plate 23 is movably mounted on the U-shaped rod 22, with its top end movably mounted on the crossbar 21. When the motor drives the rotating rod 16 to rotate, it drives the U-shaped rod 22 to rotate. Through the transmission plate 23, the H-shaped plate 19 and the cleaning plate 18 move up and down as a whole. The brush bristles on the cleaning plate 18 clean the baffle 11, ensuring suction quality.

[0017] See Figures 2-4 The sealing structure includes through slots 24 opened above the left and right sides of the feeding box 5. A sealing plate 25 is movably inserted into each of the two through slots 24. A slot 26 is opened on one side of one sealing plate 25, and an insert 27 is provided on the other sealing plate 25. Guide rods 44 are connected to both sides of each sealing plate 25 on both sides of the feeding box 5. A movable block 28 is connected to one end of the front and rear sides of each sealing plate 25. The movable block 28 is movably sleeved on the guide rod 44. The covering structure includes two sets of fixing blocks 29 connected to the feeding cylinder 6. Each set of two fixing blocks 29 rotates through a rotating shaft 30. An intermediate sleeve 31 is fixedly sleeved on the rotating shaft 30. A connecting block 32 is connected to the intermediate sleeve 31. One end of the connecting block 32 is fastened to a cover plate 33 by screws. The two cover plates 33 are tightly covered in the feeding hopper 8. A handle 34 is installed on the top of the cover plate 33. A driving structure is provided between the intermediate sleeve 31 and the sealing plate 25. The driving structure includes an L-shaped strip 35 connected to the middle of the side of the sealing plate 25 away from the feed box 5. A vertical plate 36 is tightly fixed to the top of the L-shaped strip 35. A driving groove 37 is opened on the vertical plate 36. Two rotating handles 39 are connected to the intermediate sleeve 31. The ends of the two rotating handles 39 away from the intermediate sleeve 31 are fixedly passed through the driving rod 38. The driving rod 38 moves through the driving groove 37. During extrusion, the cover plate 33 is closed at the top of the feed hopper 8 using the handle 34. This prevents dust from the outside air from entering the extruder during the extrusion process. When the cover plate 33 is closed on the feed hopper 8, the cover plate 33 drives the rotating shaft 30 to rotate. The rotating shaft 30 drives one end of the rotating handle 39 to drive the rod 38. The drive rod 38 slides upward in the drive groove 37 and pushes the sealing plate 25 outward from the feed box 5, thereby opening the feed box 5 and allowing the glue added to the feeding cylinder 6 to be smoothly fed into the extrusion cylinder 1. When the cover plate 33 is opened with the handle 34, the rotating shaft 30 drives the drive rod 38 to slide downward in the drive groove 37. Through the pressure of the drive rod 38 on the wall of the drive groove 37, the sealing plate 25 is pushed into the feed box 5 and sealed in the feed box 5, thereby separating the feeding cylinder 6 and the extrusion cylinder 1. This ensures the suction force in the feeding cylinder 6 when pouring material and prevents air in the extrusion cylinder 1 from being drawn into the feeding cylinder 6.

[0018] The implementation principle of an extruder for a pure epoxy thermosetting powder coating according to an embodiment of the present invention is as follows: First, when the cover plate 33 is opened using the handle 34, the rotating shaft 30 drives the driving rod 38 to slide downward in the driving groove 37. Through the squeezing of the groove wall by the driving rod 38, the sealing plate 25 is pushed into the feeding box 5 to seal it, thereby separating the feeding cylinder 6 and the extrusion cylinder 1. Then, the motor in the motor box 14 drives the rotating rod 16 and the exhaust fan blade 15 to rotate, generating a suction force in the feeding cylinder 6. Then, the coating is poured directly from the feeding hopper 8 into the feeding cylinder 6. Using the suction force generated in the feeding cylinder 6, the dust generated during the pouring process can be sucked into the feeding cylinder 6. When the coating accumulates at the bottom of the feeding hopper 8, making it impossible to suck the dust from the bottom of the feeding hopper 8, suction holes can also be used on the upper edge of the inner wall of the feeding hopper 8. 9. Dust is sucked out, greatly improving the quality of the working environment and reducing glue waste. The rotation of the rotating rod 16 drives the U-shaped rod 22 to rotate, which drives the H-shaped plate 19 and the cleaning plate 18 to move up and down as a whole through the transmission plate 23. The brush on the cleaning plate 18 cleans the baffle 11 to ensure the quality of suction. After the glue is added, the handle 34 is used to close the cover plate 33 at the top of the feeding hopper 8. The cover plate 33 drives the rotating shaft 30 to rotate. The rotating shaft 30 drives the handle 39 to drive the rod 38 to slide upward in the driving groove 37. The rod 38 also squeezes the groove wall of the driving groove 37, pushing the sealing plate 25 to move out of the feeding box 5, thereby opening the feeding box 5. This allows the glue added to the feeding cylinder 6 to be smoothly discharged into the extrusion cylinder 1. Finally, the motor 40 is started to drive the spiral transmission rod 41 to rotate, which realizes the extrusion of the coating.

[0019] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An extruder for pure epoxy thermosetting powder coatings, comprising an extrusion cylinder (1) and a feeding cylinder (6), characterized in that: The extrusion cylinder (1) is supported by brackets (2) at both ends below. The right end of the extrusion cylinder (1) is connected to the extrusion tube (3). An extrusion structure is provided on the extrusion cylinder (1). A feeding cylinder (6) is provided on the upper left side of the extrusion cylinder (1). A suction structure is provided inside the feeding cylinder (6). The bottom end of the feeding cylinder (6) is connected to the feeding box (5). A sealing structure is provided inside the feeding box (5). The bottom end of the feeding box (5) is connected to the feeding pipe (4). The feeding pipe (4) is connected to the extrusion cylinder (1). A covering structure is provided at the top of the feeding cylinder (6). The suction structure includes two embedded plates (7) fixedly embedded in the feeding cylinder (6). The two embedded plates (7) are distributed radially in the feeding cylinder (6). A suction groove (10) is opened on the embedded plate (7). A baffle (11) is installed in the suction groove (10). A cleaning structure is provided on the embedded plate (7). A suction cylinder (12) is connected to the embedded plate (7). The suction cylinder (12) is connected to the suction groove (10). An installation strip (13) is provided on the inner wall of the suction cylinder (12). A motor box (14) is installed on the installation strip (13). One end of the motor output shaft in the motor box (14) is connected to a rotating rod (16). An exhaust fan blade (15) is provided on the rotating rod (16). A feeding hopper (8) is provided at the upper edge of the inner wall of the feeding cylinder (6), and a ring of suction holes (9) is opened at the upper edge of the inner wall of the feeding hopper (8).

2. The extruder for pure epoxy thermosetting powder coatings according to claim 1, characterized in that: The cleaning structure includes two vertical grooves (42) on the inner side of the embedded plate (7). The two vertical grooves (42) are distributed on both sides of the baffle (11). Lifting blocks (43) are slidably arranged in the vertical grooves (42). Each lifting block (43) is connected to a connecting strip (17). The bottom ends of each set of two connecting strips (17) are connected to the cleaning plate (18). Brush bristles that are close to the baffle (11) are provided on one side of the cleaning plate (18). A transmission structure is provided between the cleaning plate (18) and the rotating rod (16).

3. The extruder for pure epoxy thermosetting powder coatings according to claim 2, characterized in that: The transmission structure includes a through groove opened on the embedded plate (7), the through groove being located in the middle above the baffle (11), the through groove moving through the H-shaped plate (19), the inner walls of the two sides of the H-shaped plate (19) being close to the embedded plate (7), a fixing strip (20) being connected to the lower side of one side of the H-shaped plate (19), the bottom end of the fixing strip (20) being connected to the cleaning plate (18), a crossbar (21) being connected to the upper side of the other side of the H-shaped plate (19), one end of the rotating rod (16) being connected to a U-shaped rod (22) that passes through the suction cylinder (12), a transmission plate (23) being movably sleeved on the U-shaped rod (22), and the top end of the transmission plate (23) being movably sleeved on the crossbar (21).

4. The extruder for pure epoxy thermosetting powder coatings according to claim 1, characterized in that: The sealing structure includes through slots (24) opened above the left and right sides of the feeding box (5). A sealing plate (25) is movably inserted into each of the two through slots (24). A slot (26) is opened on one side of one of the sealing plates (25), and an insert (27) is provided on the other sealing plate (25). Guide rods (44) are connected to both sides of the feeding box (5) at both sides of each sealing plate (25). A movable block (28) is connected to one end of the front and rear sides of each sealing plate (25). The movable block (28) is movably sleeved on the guide rod (44).

5. The extruder for pure epoxy thermosetting powder coatings according to claim 1, characterized in that: The covering structure includes two sets of fixing blocks (29) connected to the feeding cylinder (6). Each of the two fixing blocks (29) rotates through a rotating shaft (30). An intermediate sleeve (31) is fixedly fitted on the rotating shaft (30). A connecting block (32) is connected to the intermediate sleeve (31). One end of the connecting block (32) is fastened to a cover plate (33) by screws. The two cover plates (33) are tightly covered in the feeding head (8). A handle (34) is installed on the top of the cover plate (33). A driving structure is provided between the intermediate sleeve (31) and the sealing plate (25).

6. The extruder for pure epoxy thermosetting powder coatings according to claim 5, characterized in that: The driving structure includes an L-shaped strip (35) connected to the middle of the side of the sealing plate (25) away from the feed box (5). The top of the L-shaped strip (35) is fixedly attached to a vertical plate (36). A driving groove (37) is opened on the vertical plate (36). Two rotating handles (39) are connected to the intermediate sleeve (31). The two rotating handles (39) are fixedly passed through the driving rod (38) at the end away from the intermediate sleeve (31). The driving rod (38) moves through the driving groove (37).

7. The extruder for pure epoxy thermosetting powder coatings according to claim 1, characterized in that: The extrusion structure includes a motor (40) installed at the left end of the extrusion cylinder (1), and the output shaft of the motor (40) is inserted into the extrusion cylinder (1) and connected to a spiral transmission rod (41) at one end.

Images