Self-cleaning die head

Abstract

The utility model relates to the technical field of coating die heads, in particular to a self-cleaning die head which comprises a first die head and a second die head, two first motors and two second motors are fixedly arranged at the two ends of the first die head respectively, the output ends of the two first motors are both connected with first rotating shafts, and the output ends of the two second motors are both connected with second rotating shafts. One end of each first rotating shaft is connected with a first gear, a first toothed belt is meshed with the two first gears, one end of each second rotating shaft is connected with a second gear, and a second toothed belt is meshed with the two second gears. When the cleaning device is used, a pressurized water tank sprays a cleaning agent into the cavity, the sliding groove is in sliding connection with the sprinkling pipe and is driven by the first motor and the second motor to slide, and the cleaning block can slide in a reciprocating mode through the movement distance difference between the first protruding block on the first toothed belt and the second protruding block on the second toothed belt.

Description

Technical Field

[0001] This utility model relates to a coating die head, and more particularly to a self-cleaning die head, belonging to the technical field of coating die heads. Background Technology

[0002] Slit coating is a precision coating technology. Its working principle is that the coating liquid is squeezed and sprayed out along the slit of the coating die under certain pressure and flow rate and transferred to the substrate. The coating die head is a device that can coat the paste polymer, molten polymer or polymer melt onto paper, cloth, plastic film, etc. to obtain composite materials.

[0003] According to Chinese patent document CN218282417U, a self-cleaning coating die head is disclosed. A slit is formed between the outlets of the upper and lower dies, and a material storage space is formed within both dies. The lower die head has an inlet connected to the storage space, and a cap is movably connected to the inlet. The cap is driven by a lifting component located outside the lower die head to close or open the inlet. A liquid inlet pipe is connected to the bottom of the inlet. A detachable sealing plate is provided between the upper and lower dies to close the slit. This invention can clean the coating die head itself, enhances the immersion cleaning function of the slit, and improves the cleaning effect. During cleaning, it eliminates the need to disassemble the entire coating die head into upper and lower dies for separate cleaning, greatly improving the cleaning efficiency of operators and ensuring consistent production.

[0004] Based on the search of the aforementioned patents and the findings of existing equipment, the aforementioned equipment, when used, aims to clean the coating die head by injecting cleaning agent into the storage space and then soaking it. However, in daily use, the materials used in the die head are complex and diverse. For materials that are firmly attached to the inner wall of the space, simply soaking the storage space with cleaning agent cannot effectively remove the stains inside the die head, affecting the next use of the die head and reducing the purity of the materials used.

[0005] Therefore, it is urgent to improve the self-cleaning mold head to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a self-cleaning mold head. A water tank and an air pump are provided above the first mold head. The air pump pressurizes the water tank, and the pressurized water tank sends the cleaning agent into the cavity through a U-shaped tube. A telescopic rod is provided on the cleaning block inside the cavity. The first motor and the second motor drive the first toothed belt and the second toothed belt to move in opposite directions, respectively. The telescopic rod blocks the first protrusion on the first toothed belt and the second protrusion on the second toothed belt, thereby driving the cleaning block to slide back and forth and clean the cavity.

[0007] To achieve the above objectives, the main technical solution adopted by this utility model includes: a first mold head and a second mold head. Two first motors and two second motors are fixedly mounted at both ends of the first mold head. The first motors and second motors rotate in opposite directions but at the same speed. The first motors and second motors are positioned opposite each other. The output ends of the two first motors and the two second motors are respectively connected to a first rotating shaft and a second rotating shaft. One end of the two first rotating shafts and the two second rotating shafts are respectively connected to a first gear and a second gear. The two first gears and the two second gears mesh with a first toothed belt and a second toothed belt, respectively. A first protrusion and a second protrusion are fixedly mounted on the first toothed belt and the second toothed belt, respectively. A cavity is formed between the interiors of the first mold head and the second mold head. Water spray pipes are provided on both walls of the cavity. A cleaning block is slidably connected inside the cavity. Sliding grooves are provided on both side walls of the cleaning block. A telescopic rod is provided inside the cleaning block. Sealing plates are provided at both ends of the cavity. The first toothed belt and the second toothed belt pass through the two sealing plates and the cleaning block, and are slidably connected to the two sealing plates and the cleaning block.

[0008] Preferably, the telescopic rod includes a square groove fixedly connected to the cleaning block and a square column slidably connected to the square groove. A spring is connected to the top wall of the square groove, and the other end of the spring is connected to the upper end face of the square column.

[0009] Preferably, the outer wall of the first mold head is fixedly provided with a plurality of first fixing frames and a plurality of second fixing frames, and each of the plurality of first fixing frames and the plurality of second fixing frames is connected to a pulley. The first toothed belt is sleeved on the pulleys connected to the plurality of first fixing frames, and the second toothed belt is sleeved on the pulleys connected to the plurality of second fixing frames.

[0010] Preferably, the sealing plate is provided with a drain pipe that extends into the cavity, and the drain pipe is provided with a first spiral valve core.

[0011] Preferably, a water tank and an air pump are provided above both the first mold head and the second mold head. The water tank and the water spray pipe are connected by a U-shaped water pipe, and the output end of the air pump is connected to the water tank.

[0012] Preferably, the water tank is provided with an inlet pipe above it, the inlet pipe extends into the water tank, and the inlet pipe is provided with a second spiral valve core.

[0013] Preferably, in the initial position, the distance the first protrusion moves to the other end of the first mold head is less than the distance the second protrusion moves to the other end of the first mold head.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. During use, the pressurized water tank sprays the cleaning agent into the cavity. The sliding groove is connected to the water spray pipe, which plays a directional role, keeping the movement trajectory of the cleaning block perpendicular to the cavity. Driven by the first motor and the second motor rotating in opposite directions, the cleaning block slides back and forth due to the difference in movement distance between the first protrusion on the first toothed belt and the second protrusion on the second toothed belt, thus achieving the purpose of scrubbing the cavity. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the isometric structure provided by this utility model;

[0018] Figure 2 A schematic diagram of the structure of the first toothed belt and the second toothed belt provided by this utility model;

[0019] Figure 3 A schematic diagram of the connection structure between the water tank and the U-shaped pipe provided by this utility model;

[0020] Figure 4 A schematic diagram of the pulley structure provided by this utility model;

[0021] Figure 5 A schematic diagram of the cleaning block structure provided by this utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the telescopic rod provided by this utility model;

[0023] Figure 7 A schematic diagram of the sewage pipe structure provided by this utility model;

[0024] Figure 8 A schematic diagram of the cavity structure provided by this utility model;

[0025] In the diagram, 1. First mold head; 2. Second mold head; 3. First motor; 4. Second motor; 5. First rotating shaft; 6. Second rotating shaft; 7. First gear; 8. First toothed belt; 9. Second gear; 10. Second toothed belt; 11. First protrusion; 12. Second protrusion; 13. Cavity; 14. Sprinkler pipe; 15. Cleaning block; 16. Telescopic rod; 17. Enclosure plate; 18. Square groove; 19. Square column; 20. Spring; 21. First fixing frame; 22. Second fixing frame; 23. Pulley; 24. Sliding groove; 25. Sewage pipe; 26. First spiral valve core; 27. Water tank; 28. Air pump; 29. ​​U-shaped water pipe; 30. Air guide pipe; 31. Water inlet pipe; 32. Second spiral valve core. Detailed Implementation

[0026] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0027] like Figures 1-8 As shown, the self-cleaning mold head provided in this embodiment includes a first mold head 1 and a second mold head 2. A cavity 13 is formed between the interior of the first mold head 1 and the interior of the second mold head 2. The cavity 13 is provided with a sealing plate 17 at both ends, which forms a sealed space in the cavity 13. A cleaning block 15 is slidably connected inside the cavity 13. A sliding groove 24 is provided on the cleaning block. A telescopic rod 16 is provided on the cavity 13. A water spray pipe 14 is provided on both walls of the cavity 13. A plurality of water spray holes 14 are opened on the water spray pipe 14. The sliding groove 24 is slidably connected to the water spray pipe 14.

[0028] Two first motors 3 and two second motors 4 are fixedly mounted at both ends of the first mold head 1. The first motors 3 and second motors 4 are positioned opposite each other, rotating in opposite directions but at the same speed. The output ends of the two first motors 3 and the two second motors 4 are respectively connected to a first rotating shaft 5 and a second rotating shaft 6. One end of the two first rotating shafts 5 and the two second rotating shafts 6 is respectively connected to a first gear 7 and a second gear 9. The two first gears 7 and the two second gears 9 respectively mesh with a first toothed belt 8 and a second toothed belt 10. The first motors 3 and the second motors 4 drive the first toothed belt 8 and the second toothed belt 10 to move. Both belts 10 pass through the two closed plates 17 and the cleaning block 15. The first toothed belt 8 and the second toothed belt 10 are respectively fixed with a first protrusion 11 and a second protrusion 12. The surfaces of the first protrusion 11 and the second protrusion 12 are both arc-shaped. One end of the telescopic rod 16 is also arc-shaped. When the first protrusion 11 and the second protrusion 12 pass through the cleaning block 15 which is blocked by the closed plate 17, the first protrusion 11 and the second protrusion 12 will squeeze the telescopic rod 16 and then pass through the cleaning block 15. In the initial position, the distance that the first protrusion 11 moves to the other end of the first mold head 1 is less than the distance that the second protrusion 12 moves to the other end of the first mold head 1, forming a distance difference to ensure that the cleaning block 15 can slide back and forth inside the cavity 13.

[0029] Among them, such as Figure 6 As shown, the telescopic rod 16 includes a square groove 18 fixedly connected to the cleaning block 15 and a square column 19 slidably connected to the square groove 18. A spring 20 is connected to the top wall of the square groove, and the other end of the spring 20 is connected to the upper end face of the square column 10. The spring 20 allows the telescopic rod 16 to move repeatedly.

[0030] Furthermore, such as Figure 2 as well as Figure 4 As shown, a plurality of first fixing frames 21 and a plurality of second fixing frames 22 are fixedly provided on the outer wall of the first mold head 3. Each of the plurality of first fixing frames 21 and the plurality of second fixing frames 22 is connected to a pulley 23. A first toothed belt 8 is sleeved on the pulley 23 connected to the plurality of first fixing frames 21, and a second toothed belt 10 is sleeved on the pulley 23 connected to the plurality of second fixing frames 22. The supporting effect of the plurality of pulleys 23 keeps the first toothed belt 9 and the second toothed belt 10 away from the first mold head 1, thereby avoiding friction between the first toothed belt 8 and the second toothed belt 10 and the first mold head 1 and reducing wear.

[0031] Furthermore, such as Figure 7 As shown, the enclosed plate 17 is provided with a drain pipe 25, the drain pipe 25 is provided with a first spiral valve core 26, the drain pipe 25 is connected to the inside of the cavity 13, and the purpose of opening and closing the drain pipe 25 is achieved by opening and closing the first spiral valve core 26.

[0032] Furthermore, such as Figure 3 As shown, a water tank 27 and an air pump 28 are provided above the first mold head 1 and the second mold head 2. The water tank 27 is connected to the water spray pipe 14 through a U-shaped water pipe 29. The output end of the air pump 28 is connected to the water tank 27. A water inlet pipe 31 is provided above the water tank 27. The water inlet pipe 31 is equipped with a second spiral valve core 32. The purpose of switching the water inlet pipe 31 is achieved by switching the second spiral valve core 32.

[0033] like Figures 1-8 As shown, the principle of the self-cleaning head provided in this embodiment is as follows: During use, cleaning agent is added to the water tank 27 through the water inlet pipe 31. Under the action of the second spiral valve core 32, a sealed space is formed inside the water tank 27. The air pump 28 adds air to the water tank 27 through the air guide pipe 30 to increase the air pressure. The pressurized water tank 27 will spray cleaning agent into the cavity 13 through the U-shaped water pipe 29 and the spray pipe 14. The first motor 3 drives the first toothed belt 8 and the second motor 4 drives the second toothed belt 10 to rotate in opposite directions. The first toothed belt 8 and the second toothed belt 10 both pass through two closed plates and the cleaning block 15. The first protrusion 11 on the first toothed belt 8 and the second protrusion 12 on the second toothed belt 10 are initially in the same position. The first protrusion 11 moves towards the cleaning block 15 under the action of the first toothed belt 8. Under the action of the telescopic rod 16, the first protrusion 11 will be stuck at one end of the square post 19 of the telescopic rod 16, and then the first toothed belt 8 will drive the cleaning block 15 to slide. The cleaning block 15 will slide from one end of the cavity 13 to the other end. The sealing plate 17 will block the cleaning block 15 from continuing to slide forward and stop in front of the sealing plate 17. The first protrusion 11 will continue to move forward under the action of the first toothed belt 8. Since the contact position between one end of the telescopic rod 16 and the first protrusion 11 is arc-shaped, the first protrusion 11 will squeeze the telescopic rod 16 and then pass through the cleaning block 15 and continue to move forward. After the first protrusion 11 moves through the cleaning block 15, the second protrusion 12 will send the cleaning block 15 back to the initial position under the action of the second toothed belt 10 moving in the opposite direction, so as to achieve the purpose of the cleaning block 15 repeatedly brushing the cavity 13. Finally, the cleaned sewage will be discharged from the cavity 13 through the drain pipe 25.

[0034] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0035] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0036] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A self-cleaning die comprising a first die (1) and a second die (2), characterized in that: The first die (1) is respectively provided with two first motors (3) and two second motors (4) at both ends, the rotating directions of the first motor (3) and the second motor (4) are opposite, the rotating speeds of the first motor (3) and the second motor (4) are same, the first motor (3) and the second motor (4) are oppositely arranged, the output ends of the two first motors (3) and the two second motors (4) are respectively connected with first rotating shafts (5) and second rotating shafts (6), one end of the two first rotating shafts (5) and the two second rotating shafts (6) is respectively connected with first gears (7) and second gears (9), the two first gears (7) and the two second gears (9) are respectively engaged with first toothed belts (8) and second toothed belts (10), the first toothed belts (8) and the second toothed belts (10) are respectively provided with first protrusions (11) and second protrusions (12), the inside of the first die (1) and the second die (2) forms a cavity (13), the cavity (13) is respectively provided with water spraying pipes (14) on two walls, the cavity (13) is slidably connected with a cleaning block (15), the cleaning block (15) is provided with sliding grooves (24) on both side walls, the cleaning block (15) is provided with telescopic rods (16) inside, both ends of the cavity (13) are provided with closing plates (17), the first toothed belts (8) and the second toothed belts (10) penetrate through the two closing plates (17) and the cleaning block (15) and are slidably connected with the two closing plates (17) and the cleaning block (15).

2. A self-cleaning die according to claim 1, characterized in that: The telescopic rod (16) comprises a square groove (18) fixedly connected to the cleaning block (15) and a square column (19) slidably connected to the square groove (18), the square groove (18) is connected with a spring (20) on the inner top wall, the other end of the spring (20) is connected with the upper end surface of the square column (19).

3. A self-cleaning die according to claim 1, wherein: The first die (1) is respectively provided with a plurality of first fixed frames (21) and a plurality of second fixed frames (22) on the outer wall, a plurality of pulleys (23) are connected to the first fixed frames (21) and the second fixed frames (22), the first toothed belts (8) are sleeved on the pulleys (23) connected to the first fixed frames (21), and the second toothed belts (10) are sleeved on the pulleys (23) connected to the second fixed frames (22).

4. A self-cleaning die according to claim 1, characterized in that: The closing plate is provided with a sewage pipe (25), the sewage pipe (25) extends into the cavity (13), and the sewage pipe (25) is provided with a first spiral valve core (26).

5. A self-cleaning die according to claim 1, wherein: The first die (1) and the second die (2) are respectively provided with a water tank (27) and an air pump (28) above, the water tank (27) and the water spraying pipe (14) are connected and communicated through a U-shaped water pipe (29), and the output end of the air pump (28) is connected and communicated with the water tank (27) through an air guide pipe (30).

6. A self-cleaning die according to claim 5, wherein: The water tank (27) is provided with a water inlet pipe (31) extending into the water tank (27), and the water inlet pipe (31) is provided with a second spiral valve core (32).

7. A self-cleaning die according to claim 1, wherein: In the initial position, the first protrusion (11) moves to the other end of the first die (1) at a distance less than the second protrusion (12) moving to the other end of the first die (1).

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