Cooling and tabletting device for a powder coating melt extruder

Abstract

The utility model discloses a cooling tablet press device for powder coating melting extruder, including the base, the left side of base fixed frame has the horizontal conveyer, the upper end fixed mounting of horizontal conveyer has the cover, be equipped with cooling assembly in the cover, the right side upper end fixed mounting of base has the melting extruder body, the upper end intercommunication of melting extruder body is provided with the feed slot. The utility model discloses through the heat preservation hose of polyurethane foam product's positioning with U type support after surrounding screw extrusion head, cooperate with the heat preservation cover made of double -deck hollow thin alloy aluminum plate filled with rock wool and provide efficient heat preservation to screw extrusion head, prevent extrusion material cooling solidification in screw extrusion head, ensure normal discharge, through the hydraulic cylinder on the special-shaped support drive L type scraper cooperation with the inclined end surface, clear the extrusion residual material at the discharge port of screw extrusion head, need not manual cleaning operation of worker, save time and effort, avoid waste raw materials.

Description

Technical Field

[0001] This utility model relates to the field of powder coating production technology, and in particular to a cooling and pressing device for a powder coating melt extruder. Background Technology

[0002] Powder coatings are coatings that exist in the form of fine solid powders. They are characterized by being solvent-free and environmentally friendly. Powder coatings are made by mixing resins, pigments, fillers and additives in a certain proportion. The production process of powder coatings includes raw material premixing, hot melt extrusion, cooling and crushing. The coarse particles are then finely ground by air classification, combined with cyclone separation and screening to obtain uniform fine powder.

[0003] In existing powder coating melt extruders, the screw extrusion head lacks an insulation structure during the discharge cooling process, causing the extruded material to easily cool and solidify inside the extrusion head, affecting normal discharge. Furthermore, the extruded material residue in the extrusion head requires manual scraping by workers, which is time-consuming and labor-intensive. This paper proposes a cooling and pressing device for powder coating melt extruders to solve the above problems. Utility Model Content

[0004] To address the shortcomings and defects in the existing technology, this utility model proposes a cooling and pressing device for a powder coating melt extruder. This device solves the technical problems in the existing powder coating melt extruders where, during the discharge cooling process, the screw extrusion head lacks an insulation structure, causing the extruded material to easily cool and solidify inside the extrusion head, affecting normal discharge. Furthermore, the residual material in the extrusion head requires manual scraping by workers, which is time-consuming and labor-intensive.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cooling and pressing device for a powder coating melt extruder includes a base. A horizontal conveyor is fixedly mounted on the left side of the base. A cover is fixedly installed on the upper end of the horizontal conveyor. A cooling component is installed inside the cover. A melt extruder body is fixedly installed on the upper right side of the base. A feed chute is connected to the upper end of the melt extruder body. A screw extruder head is provided on the left side of the melt extruder body. A heat insulation cover is fixedly sleeved on the screw extruder head. A heat insulation mechanism is provided inside the heat insulation cover and surrounds the screw extruder head. A scraping component is provided on the upper left side of the heat insulation cover and is positioned close to the discharge port of the screw extruder head.

[0007] Preferably, the cooling assembly includes a first opening located at the lower ends of the left and right sides of the cover, the horizontal conveyor is horizontally connected through the first openings on both sides, a second opening is provided on the top surface of the cover, the discharge port of the screw extruder is located directly above the second opening, and two cooling rollers are horizontally connected through the inner walls of the front and rear sides of the cover, with the cooling gap between the two cooling rollers located directly below the discharge port of the screw extruder.

[0008] Preferably, the insulation mechanism includes U-shaped brackets that vertically penetrate the top surfaces of the insulation cover near the left and right sides. The upper ends of the horizontal sections of the two U-shaped brackets are provided with arc-shaped end faces. The same insulation hose is inserted through the two U-shaped brackets. The insulation hose is arranged around the screw extrusion head. The two free ends of the insulation hose are respectively fixed through the inner walls of the front and rear sides of the insulation cover. The same double-ended bolt is horizontally inserted through the side walls of the vertical sections of the two U-shaped brackets outside the insulation cover. The two double-ended bolts are pressed against the upper end of the insulation cover. Locking nuts are threaded onto both ends of the two double-ended bolts.

[0009] Preferably, the heat insulation cover is made of double-layer hollow thin alloy aluminum plate, the hollow layer of the heat insulation cover is filled with rock wool, and the heat insulation hose is a polyurethane foam product.

[0010] Preferably, the cleaning and scraping assembly includes a special-shaped bracket fixedly installed on the upper left side of the heat insulation cover. A hydraulic cylinder is fixedly installed on the upper end of the special-shaped bracket. The lower end of the piston rod of the hydraulic cylinder is vertically installed through the special-shaped bracket. An L-shaped scraper is fixedly installed on the lower end of the piston rod of the hydraulic cylinder. The right side wall of the vertical section of the L-shaped scraper is close to the discharge port of the screw extruder. The left side wall of the vertical section of the L-shaped scraper near the lower end is provided with an inclined end face.

[0011] Preferably, the L-shaped scraper is a wear-resistant alloy product.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. By wrapping the polyurethane foam insulation hose around the screw extruder head and positioning it with a U-shaped bracket, and using an insulation cover made of double-layer hollow thin alloy aluminum plate filled with rock wool, the screw extruder head is provided with efficient insulation, preventing the extruded material from cooling and solidifying inside the screw extruder head, and ensuring normal material discharge.

[0014] 2. The hydraulic cylinder on the special-shaped bracket drives the L-shaped scraper to cooperate with the inclined end face to clean the extruded material at the discharge port of the screw extruder head. No manual cleaning is required, saving time and effort and avoiding waste of raw materials. Attached Figure Description

[0015] Figure 1This is a perspective view of a cooling and pressing device for a powder coating melt extruder proposed in this utility model;

[0016] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the structure of a U-shaped support for a cooling and pressing device for a powder coating melt extruder proposed in this utility model;

[0018] Figure 4 for Figure 1 A magnified view of a section at point B in the middle;

[0019] Figure 5 This is a schematic diagram of the cleaning component of a cooling and pressing device for a powder coating melt extruder proposed in this utility model.

[0020] In the diagram: 1. Base, 2. Horizontal conveyor, 3. Cover, 4. Melt extruder body, 5. Feed trough, 6. Screw extruder head, 7. Insulation cover, 8. First opening, 9. Second opening, 10. Cooling roller, 11. U-shaped bracket, 12. Insulation hose, 13. Double-ended bolt, 14. Locking nut, 15. Special-shaped bracket, 16. Hydraulic cylinder, 17. L-shaped scraper. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-5A cooling and pressing device for a powder coating melt extruder includes a base 1. A horizontal conveyor 2 is fixedly mounted on the left side of the base 1. A cover 3 is fixedly mounted on the upper end of the horizontal conveyor 2. A cooling assembly is provided inside the cover 3. The cooling assembly includes first openings 8 located at the lower ends of the left and right sides of the cover 3. The horizontal conveyor 2 is horizontally inserted through the first openings 8 on both sides. A second opening 9 is provided on the top surface of the cover 3. The discharge port of the screw extruder head 6 is located directly above the second opening 9. Two cooling rollers 10 are horizontally inserted through the inner walls of the front and rear sides of the cover 3. The cooling rollers 10 provide cooling... The gap is located directly below the discharge port of the screw extruder head 6. The upper right side of the machine base 1 is fixedly installed with the melt extruder body 4. The upper end of the melt extruder body 4 is connected to the feed trough 5. The feed trough 5 is used to introduce the premixed material into the melt extruder body 4 and extrude it along the screw extruder head 6 after hot melting. The extruded hot melt material is guided through the second opening 9 to the space between the two cooling rollers 10. After being cooled and extruded by the two cooling rollers 10, it is discharged onto the horizontal conveyor 2 for transmission. The left side of the melt extruder body 4 is provided with the screw extruder head 6, and a heat insulation cover 7 is fixedly sleeved on the screw extruder head 6.

[0024] The insulation cover 7 is equipped with an insulation mechanism surrounding the screw extruder 6. The insulation mechanism includes U-shaped brackets 11 that vertically penetrate the top surfaces of the insulation cover 7 near the left and right sides. The upper ends of the horizontal sections of both U-shaped brackets 11 have arc-shaped end faces. A single insulating hose 12 passes through both U-shaped brackets 11, surrounding the screw extruder 6. The free ends of the insulating hose 12 are fixedly installed through the inner walls of the front and rear sides of the insulation cover 7. A single double-ended bolt 13 horizontally penetrates the vertical sidewalls of the two U-shaped brackets 11 outside the insulation cover 7, and both double-ended bolts 13 are pressed against the upper end of the insulation cover 7. Both ends of the two double-ended bolts 13 are threaded with locking nuts 14. The double-ended bolts 13 and the locking nuts 14 fix the U-shaped bracket 11 to the top surface of the insulation cover 7, so that the U-shaped bracket 11 positions the through insulation hose 12 on the top surface of the insulation cover 7. The insulation cover 7 is made of double-layer hollow thin alloy aluminum plate. The hollow layer of the insulation cover 7 is filled with rock wool. The insulation hose 12 is a polyurethane foam product. The insulation cover 7, made of double-layer hollow thin alloy aluminum plate filled with rock wool, together with the insulation hose 12 that circulates hot water, provides efficient insulation for the screw extruder head 6, preventing the extruded material from cooling and solidifying inside the screw extruder head 6, and ensuring normal material discharge.

[0025] A scraping assembly is provided on the upper left side of the insulation cover 7. The scraping assembly is set close to the discharge port of the screw extruder 6. The scraping assembly includes a special-shaped bracket 15 fixedly installed on the upper left side of the insulation cover 7. A hydraulic cylinder 16 is fixedly installed on the upper end of the special-shaped bracket 15. The lower end of the piston rod of the hydraulic cylinder 16 is vertically inserted through the special-shaped bracket 15. An L-shaped scraper 17 is fixedly installed on the lower end of the piston rod of the hydraulic cylinder 16. The right side wall of the vertical section of the L-shaped scraper 17 is set close to the discharge port of the screw extruder 6. The left side wall of the vertical section of the L-shaped scraper 17 near the lower end has an inclined end face. The L-shaped scraper 17 is made of wear-resistant alloy. When the hydraulic cylinder 16 is activated, the L-shaped scraper 17 works with the inclined end face to scrape the extruded residue at the discharge port of the screw extruder 6. There is no need for manual cleaning by workers, which saves time and effort and avoids waste of raw materials.

[0026] In use, the polyurethane foam insulation hose 12 is wrapped around the screw extruder head 6 and then passes through the two U-shaped supports 11, so that the arc-shaped end face of the U-shaped support 11 abuts against the insulation hose 12. The U-shaped support 11 is then positioned by using double-ended bolts 13 and locking nuts 14 after passing through the top surface of the insulation cover 7, effectively positioning the insulation hose 12 between the U-shaped support 11 and the insulation cover 7. The free ends of the insulation hose 12 are fixed through the insulation cover 7 and connected to the external hot water circulation system (not shown in the diagram). The premixed raw material is introduced into the melt extruder body 4 through the feed trough 5, and after hot melting, it is extruded along the screw extruder head 6, thus... The extruded hot melt material is guided through the second opening 9 between two cooling rollers 10, and after being cooled and extruded by the two cooling rollers 10, it is discharged onto the horizontal conveyor 2 for transmission. When the screw extruder 6 extrudes the hot melt material, the heat insulation cover 7 made of double-layer hollow thin alloy aluminum plate filled with rock wool, together with the heat insulation hose 12 that circulates hot water, provides efficient heat insulation for the screw extruder 6, preventing the extruded material from cooling and solidifying inside the screw extruder 6, ensuring normal material discharge. The hydraulic cylinder 16 on the special-shaped bracket 15 drives the L-shaped scraper 17 to clean the extruded material residue at the discharge port of the screw extruder 6 with the inclined end face, eliminating the need for manual cleaning by workers, saving time and labor, and avoiding waste of raw materials.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cooling and pressing device for a powder coating melt extruder, comprising a base (1), a horizontal conveyor (2) fixedly mounted on the left side of the base (1), a cover (3) fixedly mounted on the upper end of the horizontal conveyor (2), a cooling assembly provided inside the cover (3), a melt extruder body (4) fixedly mounted on the upper right side of the base (1), a feed chute (5) connected to the upper end of the melt extruder body (4), and a screw extrusion head (6) provided on the left side of the melt extruder body (4), characterized in that, A heat insulation cover (7) is fixedly sleeved on the screw extruder (6). A heat insulation mechanism is provided inside the heat insulation cover (7). The heat insulation mechanism is arranged around the screw extruder (6). A cleaning component is provided on the upper left side of the heat insulation cover (7). The cleaning component is arranged close to the discharge port of the screw extruder (6).

2. The cooling and pressing device for a powder coating melt extruder according to claim 1, characterized in that, The cooling assembly includes a first opening (8) located at the lower end of the left and right sides of the cover (3). The horizontal conveyor (2) is horizontally connected through the first opening (8) on both sides. A second opening (9) is provided on the top surface of the cover (3). The discharge port of the screw extruder (6) is located directly above the second opening (9). Two cooling rollers (10) are horizontally connected through the inner walls of the front and rear sides of the cover (3). The cooling gap between the two cooling rollers (10) is located directly below the discharge port of the screw extruder (6).

3. The cooling and pressing device for a powder coating melt extruder according to claim 1, characterized in that, The insulation mechanism includes U-shaped brackets (11) that are vertically inserted through the top surfaces of the insulation cover (7) near the left and right sides. The upper ends of the horizontal sections of the two U-shaped brackets (11) are provided with arc-shaped end faces. The same insulation hose (12) is inserted through the two U-shaped brackets (11). The insulation hose (12) is arranged around the screw extrusion head (6). The free ends of the insulation hose (12) are respectively fixed through the inner walls of the front and rear sides of the insulation cover (7). The same double-headed bolt (13) is horizontally inserted through the side wall of the vertical section of the two U-shaped brackets (11) outside the insulation cover (7). The two double-headed bolts (13) are pressed against the upper end of the insulation cover (7). The two ends of the two double-headed bolts (13) are threaded with locking nuts (14).

4. A cooling and pressing device for a powder coating melt extruder according to claim 3, characterized in that, The heat insulation cover (7) is made of double-layer hollow thin alloy aluminum plate, the hollow layer of the heat insulation cover (7) is filled with rock wool, and the heat insulation hose (12) is a polyurethane foam product.

5. A cooling and pressing device for a powder coating melt extruder according to claim 1, characterized in that, The cleaning and scraping assembly includes a special-shaped bracket (15) fixedly installed on the upper left side of the heat insulation cover (7). A hydraulic cylinder (16) is fixedly installed on the upper end of the special-shaped bracket (15). The lower end of the piston rod of the hydraulic cylinder (16) is vertically installed through the special-shaped bracket (15). An L-shaped scraper (17) is fixedly installed on the lower end of the piston rod of the hydraulic cylinder (16). The right side wall of the vertical section of the L-shaped scraper (17) is close to the discharge port of the screw extruder (6). The left side wall of the vertical section of the L-shaped scraper (17) near the lower end is provided with an inclined end face.

6. A cooling and pressing device for a powder coating melt extruder according to claim 5, characterized in that, The L-shaped scraper (17) is a wear-resistant alloy product.

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