Extrusion device with cleaning structure for coating preparation

Abstract

The utility model discloses an extrusion device with a cleaning structure for coating preparation. Comprising an extrusion cylinder, a shaftless conveying screw blade used for conveying coating is arranged in the extrusion cylinder, and a first shaft head and a second shaft head which are movably installed are arranged at the two ends of the shaftless conveying screw blade correspondingly; a threaded rod used for driving movement adjustment is installed in the first shaft head and the second shaft head in a penetrating mode, a movable column used for movement adjustment is connected to the threaded rod in a threaded mode, a first scraper and a second scraper are fixedly arranged on the movable column, and the first scraper and the second scraper are attached to the two sides of the shaftless conveying screw blade respectively. According to the shaftless conveying device, coating is conveyed through the shaftless conveying screw blade, then the movable column, the first scraper and the second scraper are moved and adjusted through the threaded rod, and therefore the shaftless conveying screw blade is cleaned.

Description

Technical Field

[0001] This utility model belongs to the field of extrusion technology, and in particular relates to an extrusion device for coating preparation with a clean structure. Background Technology

[0002] Paint is a viscous liquid that is applied to the surface of an object to be protected or decorated, and forms a continuous film that adheres firmly to the object. It is usually made of resin, oil, or emulsion as the main component, with or without pigments and fillers, and with appropriate additives, and is prepared with organic solvents or water.

[0003] Screw extruders rely on the pressure and shear force generated by the rotation of the screw to fully plasticize and uniformly mix materials, which are then shaped through a die. Plastic extruders can be broadly classified into twin-screw extruders, single-screw extruders, and less common multi-screw extruders and screwless extruders.

[0004] Referring to patent application number 201920038652.2, a rapid cleaning screw device and an extruder including the same device are disclosed. The device comprises a worktable, a fixed cavity disposed on the worktable, a transmission assembly disposed on one side of the fixed cavity, a power component transmitted through the transmission assembly, and a screw transmitted to the power component. The transmission assembly drives the power component and the screw through the fixed cavity. This invention uses a hydraulic or electric lead screw as the transmission method to separate a single screw, a double-cone feeder, or a double screw from the cavity for cleaning. This facilitates separate cleaning of the screw and the cavity, providing convenient and effective cleaning. The automatic separation ensures good stability, high efficiency, and strong reliability, making it particularly suitable for materials with extremely high cleaning requirements, such as ceramics.

[0005] However, existing technologies have some problems: although it is easy to separate the equipment, it is not possible to perform multiple separate cleanings during use, and cleaning the screw is quite troublesome. Therefore, we propose an extrusion device for coating preparation with a cleaning structure. Utility Model Content

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide an extrusion device for coating preparation with a clean structure. The device uses a shaftless conveying screw to transport the coating, and then uses a threaded rod to move and adjust the moving column and the first and second scrapers, thereby cleaning the shaftless conveying screw.

[0007] This invention is achieved by providing an extrusion device for coating preparation with a clean structure, comprising an extrusion cylinder.

[0008] The extrusion cylinder is equipped with a shaftless conveying screw for conveying coating material. The two ends of the shaftless conveying screw are respectively provided with a first shaft head and a second shaft head for movable installation.

[0009] A threaded rod for driving movement adjustment is installed through the first shaft head and the second shaft head. A moving column for movement adjustment is threadedly connected to the threaded rod. A first scraper and a second scraper are fixedly provided on the moving column. The first scraper and the second scraper are respectively attached to both sides of the shaftless conveying screw blade.

[0010] Specifically, a cap is fixedly installed at one end of the extrusion cylinder, and the first shaft head is movably connected inside the cap.

[0011] Specifically, the upper end of the extrusion cylinder is fixedly connected to a feed funnel, and the other end of the extrusion cylinder is fixedly connected to an extrusion nozzle.

[0012] Specifically, one end of the extrusion nozzle is connected to one end of the extrusion cylinder, the extrusion nozzle and the extrusion cylinder are connected by a locking nut, and a limiting ring is fixedly provided on the extrusion cylinder.

[0013] Specifically, a second rotating wheel is keyed to the first shaft head, a first servo motor is provided at the lower part of the extrusion cylinder, a first rotating wheel is keyed to the output end of the first servo motor, and the first rotating wheel and the second rotating wheel are connected by a transmission belt.

[0014] Specifically, one end of the threaded rod passes through the first shaft head, and the end of the threaded rod is connected to a second servo motor.

[0015] Specifically, a positioning frame is fixedly provided at one end of the extrusion cylinder, and a plug is fixedly provided at one end of the second shaft head. The plug is connected to the inside of the positioning frame, and one end of the threaded rod passes through the second shaft head, while the end of the threaded rod is rotatably connected to the inside of the plug.

[0016] Specifically, one end of the extrusion nozzle is engaged within the end of the extrusion cylinder, and the end of the extrusion nozzle is attached to one side of the positioning frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention uses a shaftless conveying screw to transport the coating material, which reduces the adhesion between the coating material and the conveying mechanism, thereby improving the cleanliness of the inside of the extrusion device.

[0019] Furthermore, a first shaft head and a second shaft head are respectively provided at both ends of the shaftless conveying screw blade. The first shaft head and the second shaft head drive the shaftless conveying screw blade, enabling the shaftless conveying screw blade to complete the conveying of the coating.

[0020] Furthermore, a threaded rod is provided inside the first and second shaft heads, and a movable column is provided on the threaded rod. The movable column is located at the center of the shaftless conveying screw blade, which facilitates the position adjustment of the threaded rod at the center of the shaftless conveying screw blade when it rotates. A first scraper and a second scraper are provided on the movable column. The first scraper and the second scraper are used to scrape the surface of the shaftless conveying screw blade and facilitate scraping the inner wall of the protective cylinder, thereby scraping off the residual coating on the protective cylinder and the shaftless conveying screw blade, and cleaning the extrusion device.

[0021] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure provided by this utility model;

[0023] Figure 2 This is a cross-sectional schematic diagram provided by this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure provided by this utility model;

[0025] Figure 4 This is a partial internal structure diagram provided by this utility model.

[0026] In the diagram: 1. Extrusion cylinder; 2. Extrusion nozzle; 3. First shaft head; 4. Shaftless conveyor blade; 5. Second shaft head; 6. Threaded rod; 7. Moving column; 8. First scraper; 9. Second scraper; 10. First servo motor; 11. First impeller; 12. Second impeller; 13. Drive belt; 14. Second servo motor; 15. Cover; 16. Connector; 17. Positioning frame; 18. Feed funnel; 19. Limiting ring; 20. Locking nut. Detailed Implementation

[0027] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0028] like Figures 1 to 4 As shown in the figure, an extrusion apparatus for preparing coatings with a clean structure is provided in this embodiment of the present invention, including an extrusion cylinder 1.

[0029] The inside of the extrusion cylinder 1 is provided with a shaftless conveying screw 4 for conveying coatings. The two ends of the shaftless conveying screw 4 are respectively provided with a first shaft head 3 and a second shaft head 5 for movable installation.

[0030] A threaded rod 6 for driving movement adjustment is installed through the first shaft head 3 and the second shaft head 5. A moving column 7 for movement adjustment is threadedly connected to the threaded rod 6. A first scraper 8 and a second scraper 9 are fixed on the moving column 7. The first scraper 8 and the second scraper 9 are respectively attached to both sides of the shaftless conveying screw blade 4.

[0031] In this embodiment, preferably, a cap 15 is fixedly installed at one end of the extrusion cylinder 1, and the first shaft head 3 is movably connected inside the cap 15;

[0032] It should be noted that the cap 15 is designed to facilitate the sealing of the extrusion cylinder 1, maintain the airtightness of the extrusion cylinder 1, facilitate the conveying of the coating, and the first shaft head 3 is movably connected to the cap 15 to facilitate the stable rotation of the first shaft head 3.

[0033] In this embodiment, preferably, the upper end of the extrusion cylinder 1 is fixedly connected to the feed funnel 18, and the other end of the extrusion cylinder 1 is fixedly connected to the extrusion nozzle 2.

[0034] It should be noted that the feed funnel 18 is designed to facilitate the input of coating into the extrusion cylinder 1, and to facilitate the extrusion of the coating through the shaftless conveying screw 4, and discharge through the extrusion nozzle 2.

[0035] In this embodiment, preferably, one end of the extrusion nozzle 2 is connected to one end of the extrusion cylinder 1, and the extrusion nozzle 2 and the extrusion cylinder 1 are connected by a locking nut 20. A limiting ring 19 is fixedly provided on the extrusion cylinder 1.

[0036] It should be noted that the extrusion nozzle 2 is connected to the extrusion cylinder 1, and in order to maintain the connection stability of the extrusion nozzle 2, the extrusion nozzle 2 and the extrusion cylinder 1 are fixedly connected by the locking nut 20 to maintain the fixation of the extrusion nozzle 2. The setting of the limiting ring 19 is convenient to resist the locking nut 20 and prevent the locking nut 20 from moving excessively.

[0037] In this embodiment, preferably, a second rotating wheel 12 is keyed to the first shaft head 3, a first servo motor 10 is provided at the lower part of the extrusion cylinder 1, a first rotating wheel 11 is keyed to the output end of the first servo motor 10, and the first rotating wheel 11 and the second rotating wheel 12 are connected by a transmission belt 13.

[0038] It should be noted that the second rotating wheel 12 is designed to drive the first shaft head 3 to rotate, and the first servo motor 10 provides power output. The second rotating wheel 12 and the transmission belt 13 drive the first rotating wheel 11 to rotate, so that the shaftless conveying screw 4 conveys the paint.

[0039] In this embodiment, preferably, one end of the threaded rod 6 passes through the first shaft head 3, and the end of the threaded rod 6 is connected to the second servo motor 14;

[0040] It should be noted that the threaded rod 6 passes through the first shaft head 3, which facilitates the stable installation of the threaded rod 6 and enables the threaded rod 6 to be driven by the second servo motor 14. This allows the threaded rod 6 to drive the moving column 7, the first scraper 8, and the second scraper 9 to move, which facilitates the cleaning of residual coating from the shaftless conveying screw 4 and the extrusion cylinder 1.

[0041] In this embodiment, preferably, a positioning frame 17 is fixedly provided at one end of the inside of the extrusion cylinder 1, and a plug 16 is fixedly provided at one end of the second shaft head 5. The plug 16 is connected to the inside of the positioning frame 17, and one end of the threaded rod 6 passes through the second shaft head 5, and the end of the threaded rod 6 is rotatably connected to the inside of the plug 16.

[0042] It should be noted that the second shaft head 5 is installed through the positioning bracket 17 to maintain the stable rotation of the shaftless conveying screw 4 and the threaded rod 6.

[0043] In this embodiment, preferably, one end of the extrusion nozzle 2 is engaged inside the end of the extrusion cylinder 1, and the end of the extrusion nozzle 2 is attached to one side of the positioning frame 17.

[0044] It should be noted that one end of the extrusion nozzle 2 is engaged inside the extrusion cylinder 1 to maintain the contact of the connection, and is fitted with the positioning frame 17 to maintain the stability of the positioning frame 17.

[0045] The specific operational steps for this application are as follows:

[0046] In use, the paint is fed into the extrusion cylinder 1 through the feed funnel 18 and the first servo motor 10 is started. The first servo motor 10 drives the first rotating wheel 11 through the second rotating wheel 12 and the transmission belt 13, so that the first rotating wheel 11 can drive the first shaft head 3 to rotate, thereby causing the shaftless conveying screw 4 to extrude and convey the paint, so that the paint can be discharged through the extrusion cylinder 1.

[0047] After the coating is extruded, the threaded rod 6 is driven to rotate by the second servo motor 14. When the threaded rod 6 rotates, it can drive the moving column 7 to rotate. The first scraper 8 and the second scraper 9 are fixed on the moving column 7 and are attached to the surface of the shaftless conveying screw 4. This allows the first scraper 8 and the second scraper 9 to scrape off the coating from the shaftless conveying screw 4 and the inner wall of the extrusion cylinder 1, thereby cleaning the residual coating on the extrusion cylinder 1 and the shaftless conveying screw 4.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An extrusion device for paint preparation with a cleaning structure, comprising an extrusion cylinder (1), characterized in that: the inside of the extrusion cylinder (1) is provided with a shaftless conveying blade (4) for conveying paint, both ends of the shaftless conveying blade (4) are respectively provided with a first shaft head (3) and a second shaft head (5) for movable mounting; the first shaft head (3) and the second shaft head (5) are throughly provided with a threaded rod (6) for driving movement adjustment, the threaded rod (6) is threadedly connected with a movement column (7) for movement adjustment, the movement column (7) is fixedly provided with a first scraper (8) and a second scraper (9), the first scraper (8) and the second scraper (9) are respectively attached to both sides of the shaftless conveying blade (4).

2. The paint preparation extrusion device with a cleaning structure according to claim 1, characterized in that: One end of the extrusion cylinder (1) is fixedly mounted with a cover (15), the first shaft head (3) is movably connected in the inside of the cover (15).

3. The paint preparation extrusion device with a cleaning structure according to claim 1, characterized in that: The upper end of the extrusion cylinder (1) is fixedly communicated with a feeding hopper (18), the other end of the extrusion cylinder (1) is fixedly communicated with an extrusion nozzle (2).

4. The paint preparation extrusion device with a cleaning structure according to claim 3, characterized in that: One end of the extrusion nozzle (2) is connected with one end of the extrusion cylinder (1), the extrusion nozzle (2) and the extrusion cylinder (1) are connected through a locking nut (20), the extrusion cylinder (1) is fixedly provided with a limiting ring (19).

5. The paint preparation extrusion device with a cleaning structure according to claim 1, characterized in that: The first shaft head (3) is keyed with a second gear (12), the lower part of the extrusion cylinder (1) is provided with a first servo motor (10), the output end of the first servo motor (10) is keyed with a first gear (11), the first gear (11) and the second gear (12) are drivingly connected through a transmission belt (13).

6. The paint preparation extrusion device with a cleaning structure according to claim 1, characterized in that: One end of the threaded rod (6) penetrates through the first shaft head (3), the end of the threaded rod (6) is connected with a second servo motor (14).

7. The paint preparation extrusion device with a cleaning structure according to claim 3, characterized in that: One end of the extrusion cylinder (1) is fixedly provided with a positioning frame (17), one end of the second shaft head (5) is fixedly provided with a plug (16), the plug (16) is connected in the inside of the positioning frame (17), one end of the threaded rod (6) penetrates through the second shaft head (5), and the end of the threaded rod (6) is rotatably connected in the inside of the plug (16).

8. The paint preparation extrusion device with a cleaning structure according to claim 7, characterized in that: One end of the extrusion nozzle (2) is clamped in the end of the extrusion cylinder (1), the end of the extrusion nozzle (2) is attached to one side of the positioning frame (17).

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