Multi-channel automatic dispersing and extruding device

Abstract

The invention discloses a multi-channel automatic dispersing and extruding device which comprises a horizontally-arranged machine shell, a screw rod arranged in the machine shell and an extruding opening formed in the end of the machine shell. The side, away from the extrusion opening, of the top of the machine shell is connected with a vertically-arranged feeding barrel, the bottom of the outer surface of the feeding barrel and the outer surface of the machine shell are each provided with a heating component, a rotating rod is arranged in the feeding barrel, and the top of the outer surface of the rotating rod is fixedly connected with a guide blade used for guiding raw materials to fall down. Feeding is guided through the acting force in the rotating process of the screw rod, the gravity effect of raw materials and the special structure of the guide blades, so that the continuously-added raw materials can continuously rotate and fall down along the guide blades and are stacked downwards layer by layer until the raw materials are molten and are conveyed downwards under the action of the screw rod, and the raw materials are conveyed downwards. Large particles are prevented from floating all the time, so that the problem that particle raw materials with different particle sizes and different specific gravities are not uniformly mixed is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, and in particular to a multi-channel automatic dispersing extrusion device. Background Art

[0002] An extruder is used in the production of plastic products. When in use, the extruder generally mixes the raw materials evenly through a screw, then heats them to melt the raw materials, and finally uses the extrusion force of the screw to extrude the melted plastic raw materials from the extrusion port to form them.

[0003] At present, when plastic products are produced by injection molding and extrusion, it is generally necessary to add a variety of raw material particles. In addition, in order to improve its performance, various additives are usually required to be added. Therefore, whether the various raw materials and additives are mixed evenly has a great influence on the quality of the extruded plastic products.

[0004] However, existing extruders usually use a screw to convey the material body. No matter whether the raw materials are mixed in advance or added directly to the extruder and then mixed, before the raw materials are heated and melted, they need to be conveyed and mixed again by rotating the screw. When some particles of different particle sizes or different specific gravities enter the extruder at the same time, in the process of mixing and conveying the raw materials by rotating the screw, particles with larger particle sizes or smaller specific gravities are easy to float on the screw or on the edge and make the movement speed slower, which is easy to cause uneven dispersion between different particles and affect the quality of the final product. Summary of the invention

[0005] The object of the present invention is to provide a multi-channel automatic dispersing extruder to solve the technical problem of uneven mixing of multiple raw materials by extruders in the prior art.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A multi-channel automatic dispersing extruder comprises a horizontally arranged casing, a screw arranged inside the casing, and an extrusion port arranged at the end of the casing;

[0008] A vertically arranged feed barrel is connected to the side of the top of the casing away from the extrusion port, a heating component is provided on the bottom of the outer surface of the feed barrel and the outer surface of the casing, a rotating rod is provided inside the feed barrel, a guide blade for guiding the raw materials to fall is fixedly connected to the top of the outer surface of the rotating rod, and a screw rod for stirring and conveying the raw materials downward is fixedly connected to the bottom of the outer surface of the rotating rod, so that the raw materials are guided by the guide blades to fall in sequence, are heated and melted by the heating component, are stirred and conveyed downward by the screw rod, and then reach the inside of the casing and are extruded by the screw rod.

[0009] Furthermore, the guide blade is spirally shaped and is arranged downward along the rotating rod. The inner side of the guide blade is fixedly connected to the outer surface of the rotating rod, and the outer side of the guide blade is in contact with the inner wall of the feed barrel, so that the material added from the top of the feed barrel is transferred downward in sequence along the rotation direction of the guide blade.

[0010] Furthermore, the height of the top of the heating component on the feed barrel is lower than the height of the guide blades and higher than the height of the screw rod, so that the raw materials are heated and melted after falling from above the guide blades, and then stirred by the screw rod and transported downward.

[0011] Furthermore, a spherical dispersion box is provided between the feed barrel and the casing, and a first guide cover is connected between the spherical dispersion box and the feed barrel, and a second guide cover is connected between the spherical dispersion box and the casing, so that the raw materials that are melted, stirred by the spiral rod and transported downward pass through the first guide cover, the spherical dispersion box and the second guide cover in sequence and reach the inside of the casing.

[0012] Furthermore, the first guide cover is configured to be funnel-shaped, the second guide cover is configured to be trumpet-shaped, and the bottom diameter of the first guide cover is larger than the top diameter of the second guide cover, so that the extrusion force of the melted raw material increases when it passes through the first guide cover and reaches the spherical dispersion box.

[0013] Furthermore, a vertically arranged cylinder is fixedly connected inside the spherical dispersion box, so that an annular dispersion chamber is formed between the cylinder and the spherical dispersion box, and the top diameter of the cylinder is larger than the bottom diameter thereof, so that the top of the cylinder is connected to the first guide cover, and the bottom of the cylinder is connected to the second guide cover;

[0014] A first through hole connected to the dispersion chamber is provided at the top of the inner wall of the cylinder, and a second through hole connected to the dispersion chamber is provided at the bottom of the inner wall of the cylinder, so that the melted raw materials reach the inside of the cylinder through the first guide cover, and a small part of the raw materials inside the cylinder directly reaches the second guide cover, while most of the raw materials reach the dispersion chamber through the first through hole, are mixed, and then are discharged from the second through hole to reach the second guide cover.

[0015] Furthermore, the inner wall diameter of the first through hole is larger than the outer wall diameter, and the inner wall diameter of the second through hole is smaller than the outer wall diameter, so that the raw material enters the dispersion chamber from the first through hole and is discharged from the second through hole.

[0016] Furthermore, a plurality of rotating rollers are rotatably connected to the inner wall of the dispersion chamber, and the rotating rollers are arranged in a horizontal direction, so that after the raw materials enter the dispersion chamber from the first through hole, they are continuously separated and merged by the plurality of rotating rollers, thereby mixing the raw materials.

[0017] Furthermore, a plurality of dispersing blades are fixedly connected to the outer surface of the rotating roller, so that the raw materials are pressed against the dispersing blades under the action of the extrusion force to drive the rotating roller to rotate, thereby stirring and mixing the raw materials.

[0018] Furthermore, at least one transversely arranged baffle is fixedly connected to the inner wall of the second guide cover, and a plurality of dispersion channels are opened on the baffle, so that the melted raw material is dispersed again through the plurality of dispersion channels under the action of the extrusion force.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention guides the feed through the force during the rotation of the screw rod, the gravity of the raw material itself, and the special structure of the guide blades, so that the continuously added raw materials will continue to rotate and fall along the guide blades, accumulate downward layer by layer, and are transported downward under the action of the screw rod after being melted. Moreover, as the guide blades rotate and under the gravity of the raw material particles, the guide blades continuously press the raw materials downward to prevent large particles from floating on the surface all the time, thereby preventing uneven mixing of granular raw materials with different particle sizes and different specific gravities. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] Figure 1 A schematic diagram of the structure provided by the present invention;

[0023] Figure 2 It is a structural schematic diagram of the feed barrel of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the guide blade of the present invention.

[0025] The numbers in the figure represent the following:

[0026] 10- housing; 20- feeding cylinder; 30- heating component; 40- spherical dispersion box; 50- first guide cover; 60- second guide cover;

[0027] 11-screw; 12-extrusion port;

[0028] 21-rotating rod; 22-guiding blade; 23-screw rod;

[0029] 41-cylinder; 42-dispersing chamber; 43-first through hole; 44-second through hole; 45-rotating roller; 46-dispersing blade;

[0030] 61- baffle; 62- dispersion channel. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1 and Figure 2 As shown, the present invention provides a multi-channel automatic dispersing extruder, which mainly disperses and pre-melts the raw materials through a vertically arranged feeding cylinder 20 to improve the mixing degree of the raw materials.

[0033] It includes a horizontally arranged housing 10, a screw 11 arranged inside the housing 10, and an extrusion port 12 arranged at the end of the housing 10;

[0034] A vertically arranged feed barrel 20 is connected to the top of the casing 10 on the side away from the extrusion port 12, a heating component 30 is provided on the bottom of the outer surface of the feed barrel 20 and the outer surface of the casing 10, a rotating rod 21 is provided inside the feed barrel 20, a guide blade 22 for guiding the raw material to fall is fixedly connected to the top of the outer surface of the rotating rod 21, and a screw rod 23 for stirring and conveying the raw material downward is fixedly connected to the bottom of the outer surface of the rotating rod 21, so that the raw material is guided by the guide blades 22 to fall in sequence, is heated and melted by the heating component 30, is stirred and conveyed downward by the screw rod 23, and then reaches the inside of the casing 10 and is extruded by the screw 11.

[0035] A first motor for driving the screw rod 11 to rotate is disposed on one side of the screw rod 11 , and a second motor for driving the rotating rod 21 to rotate is disposed on the top of the rotating rod 21 .

[0036] Existing extruders usually use a screw 11 to convey the material body. No matter whether the raw materials are mixed in advance or added directly to the extruder for mixing, before the raw materials are heated and melted, the raw materials need to be conveyed and mixed again by rotating the screw 11. When some particles of different particle sizes or different specific gravities enter the extruder at the same time, in the process of mixing and conveying the raw materials by rotating the screw 11, particles with larger particle sizes or smaller specific gravities are easy to float on or at the edge of the screw 11 and make the movement speed slower, which is easy to cause uneven dispersion between different particles and affect the quality of the final product. Therefore, it is necessary to develop an extrusion device for uniform mixing.

[0037] This embodiment guides the feed through the force during the rotation of the spiral rod 23, the gravity of the raw material itself, and the special structure of the guide blade 22, so that the continuously added raw material will continue to rotate and fall along the guide blade 22, and accumulate downward layer by layer until it is melted and then transported downward under the action of the spiral rod 23. As the guide blade 22 rotates and under the gravity of the raw material particles, the guide blade 22 continuously presses the raw material downward to prevent large particles from floating on the surface, thereby preventing uneven mixing of granular raw materials with different particle sizes and different specific gravities.

[0038] In actual use, 1. Add materials, feed the raw materials from the feed barrel 20 according to the corresponding proportion and feeding speed, and the external motor drives the rotating rod 21 to rotate, thereby driving the guide blade 22 and the screw rod 23 to rotate, and the raw materials fed from the feed barrel 20 fall on the guide blade 22 in turn. With the rotation of the guide blade 22 and the gravity of the raw materials themselves, the raw materials are transported downward in turn. Relying on the gravity of the raw materials themselves and the guiding effect of the guide blade 22, the raw materials are transported. There will be no particles with larger particle size or smaller specific gravity floating on the screw 11 or on the edge, which slows down the moving speed and causes uneven dispersion between different particles.

[0039] 2. Melting: After the raw materials are stacked in sequence, the heating component 30 heats the raw materials conveyed to melt them and continues to heat them before they are extruded;

[0040] 3. Stirring and extruding. The melted raw materials are transported downward in sequence under the action of the screw rod 23 and stirred at the same time to improve the mixing effect. At this time, the raw materials have been melted, and there will be no phenomenon that particles with larger particle size or smaller specific gravity float on the screw rod 11 or on the edge and slow down the moving speed;

[0041] 4. Discharging: the stirred raw materials reach the interior of the housing 10 , and are extruded from the extrusion port 12 under the rotation of the screw 11 .

[0042] As a preferred embodiment of this implementation, Figure 3 As shown, the guide blade 22 is spirally shaped and is arranged spirally downward along the rotating rod 21. The inner side of the guide blade 22 is fixedly connected to the outer surface of the rotating rod 21, and the outer side of the guide blade 22 is in contact with the inner wall of the feed barrel 20, so that the material added from the top of the feed barrel 20 is transferred downward in sequence along the rotation direction of the guide blade 22. The special structural design of the guide blade 22 allows the raw materials to move downward in sequence and stack in sequence under the action of the guide blade 22, so that the raw materials are evenly mixed before they are melted, and the rotating guide blade 22 has a downward pressure, so that the raw materials falling from the guide blade 22 are continuously squeezed downward.

[0043] The melting stage of the raw materials is very important, which needs to be after the raw materials are fed and before the screw 23 is stirred. Figure 2 As shown, the height of the top of the heating component 30 on the feed barrel 20 is lower than the height of the guide blades 22 and higher than the height of the screw rod 23, so that the raw material is heated and melted after falling from the top of the guide blades 22, and then stirred and transported downward by the screw rod 23. The special design of the height of the heating component 30 allows the raw material to be heated and melted just after the guide blades 22 guide the feed and before the screw rod 23 stirs. If the raw material is melted after the screw rod 23 stirs, particles with larger particle sizes or smaller specific gravity will float on or at the edge of the screw rod 23, resulting in uneven mixing of the raw materials. However, this problem does not exist if the raw material is stirred after it is melted.

[0044] In order to further improve the mixing effect of the melted raw materials, a spherical dispersion box 40 is provided between the feed barrel 20 and the casing 10, and a first guide cover 50 is connected between the spherical dispersion box 40 and the feed barrel 20, and a second guide cover 60 is connected between the spherical dispersion box 40 and the casing 10, so that the raw materials that are melted, stirred by the spiral rod 23 and transported downward pass through the first guide cover 50, the spherical dispersion box 40 and the second guide cover 60 in sequence and then reach the inside of the casing 10.

[0045] A vertically arranged cylinder 41 is fixedly connected inside the spherical dispersion box 40, so that an annular dispersion chamber 42 is formed between the cylinder 41 and the spherical dispersion box 40, and the top diameter of the cylinder 41 is larger than the bottom diameter thereof, so that the top of the cylinder 41 is connected to the first guide cover 50, and the bottom of the cylinder 41 is connected to the second guide cover 60;

[0046] A first through hole 43 connected to the dispersion chamber 42 is provided at the top of the inner wall of the cylinder 41, and a second through hole 44 connected to the dispersion chamber 42 is provided at the bottom of the inner wall of the cylinder 41, so that the melted raw materials reach the inside of the cylinder 41 through the first guide cover 50, and a small part of the raw materials inside the cylinder 41 directly reaches the second guide cover 60, while most of the raw materials reach the dispersion chamber 42 through the first through hole 43, are mixed, and then are discharged from the second through hole 44 to reach the second guide cover 60.

[0047] The raw materials stirred by the screw rod 23 reach the inside of the cylinder 41 through the first guide cover 50. Due to the extrusion pressure of the screw rod 23, the raw materials are squeezed from the inside of the cylinder 41 through the first through hole 43 into the dispersion chamber 42. Then, the raw materials inside the cylinder 41 are continuously mixed with the raw materials in the dispersion chamber 42. After that, the raw materials in the dispersion chamber 42 continuously reach the inside of the cylinder 41 from the second through hole 44 under the action of the extrusion pressure and are mixed with the raw materials inside the cylinder 41, thereby further improving the mixing effect.

[0048] In order to further improve the mixing effect of the raw materials in the dispersion chamber 42, a plurality of rotating rollers 45 are rotatably connected to the inner wall of the dispersion chamber 42. The rotating rollers 45 are arranged in a horizontal direction, so that the raw materials are continuously separated and merged by the plurality of rotating rollers 45 after entering the dispersion chamber 42 from the first through hole 43, thereby mixing the raw materials. By setting the rotating rollers 45, the raw materials in the dispersion chamber 42 are divided and merged multiple times, thereby improving the mixing effect.

[0049] Furthermore, a plurality of dispersing blades 46 are fixedly connected to the outer surface of the rotating roller 45, so that the raw materials are pressed against the dispersing blades 46 under the extrusion force, thereby driving the rotating roller 45 to rotate, thereby stirring and mixing the raw materials. By providing the dispersing blades 46 on the outer surface of the rotating roller 45, the dispersing blades 46 can rotate under the extrusion force of the raw materials, thereby further stirring the raw materials.

[0050] In order to obtain a greater extrusion force so that the raw materials can be better mixed in the dispersion chamber 42, the first guide cover 50 is set to a funnel shape, and the second guide cover 60 is set to a trumpet shape, and the bottom diameter of the first guide cover 50 is larger than the top diameter of the second guide cover 60, so that the extrusion force of the melted raw materials is increased when they pass through the first guide cover 50 to the spherical dispersion box 40. The shape design of the first guide cover 50 and the second guide cover 60 increases the extrusion force of the raw materials entering the dispersion chamber 42.

[0051] In order to make the raw materials enter and exit the dispersion chamber 42 more smoothly and fix their entry and exit directions, the inner wall diameter of the first through hole 43 is larger than its outer wall diameter, and the inner wall diameter of the second through hole 44 is smaller than its outer wall diameter, so that the raw materials enter the dispersion chamber 42 from the first through hole 43 and are discharged from the second through hole 44.

[0052] At least one transversely arranged baffle 61 is fixedly connected to the inner wall of the second guide cover 60, and a plurality of dispersion channels 62 are provided on the baffle 61, so that the melted raw materials are dispersed again through the plurality of dispersion channels 62 under the action of the extrusion force. The raw materials mixed in the dispersion chamber 42 are dispersed and mixed again through the plurality of dispersion channels 62 to improve the overall mixing effect, and then are extruded and formed by the screw 11.

[0053] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A multi-channel automatic dispersing extruder, characterized in that: It comprises a horizontally arranged casing (10), a screw (11) arranged inside the casing (10), and an extrusion port (12) arranged at the end of the casing (10); A vertically arranged feed barrel (20) is connected to the top of the casing (10) at a side away from the extrusion port (12), a heating component (30) is provided at the bottom of the outer surface of the feed barrel (20) and the outer surface of the casing (10), a rotating rod (21) is provided inside the feed barrel (20), a guide blade (22) for guiding the raw material to fall is fixedly connected to the top of the outer surface of the rotating rod (21), and a screw rod (23) for stirring and conveying the raw material downward is fixedly connected to the bottom of the outer surface of the rotating rod (21), so that the raw material is guided by the guide blades (22) to fall in sequence, and then heated and melted by the heating component (30), and then stirred and conveyed downward by the screw rod (23), and then reaches the inside of the casing (10) and is extruded by the screw rod (11).

2. A multi-channel automatic dispersing extrusion device according to claim 1, characterized in that: The guide blade (22) is spirally shaped and is arranged spirally downward along the rotating rod (21). The inner side of the guide blade (22) is fixedly connected to the outer surface of the rotating rod (21), and the outer side of the guide blade (22) is in contact with the inner wall of the feed barrel (20), so that the material added from the top of the feed barrel (20) is transferred downward in sequence along the rotation direction of the guide blade (22).

3. A multi-channel automatic dispersing extruder according to claim 2, characterized in that: The height of the top of the heating component (30) on the feed barrel (20) is lower than the height of the guide blades (22) and higher than the height of the screw rod (23), so that the raw materials are heated and melted after falling from above the guide blades (22), and then stirred and transported downward by the screw rod (23).

4. A multi-channel automatic dispersing extruder according to claim 3, characterized in that: A spherical dispersion box (40) is provided between the feed barrel (20) and the casing (10), and a first guide cover (50) is connected between the spherical dispersion box (40) and the feed barrel (20), and a second guide cover (60) is connected between the spherical dispersion box (40) and the casing (10), so that the raw materials that are melted, stirred by the spiral rod (23) and transported downward pass through the first guide cover (50), the spherical dispersion box (40) and the second guide cover (60) in sequence and then reach the interior of the casing (10).

5. A multi-channel automatic dispersing extruder according to claim 4, characterized in that: The first guide cover (50) is configured to be funnel-shaped, the second guide cover (60) is configured to be trumpet-shaped, and the bottom diameter of the first guide cover (50) is larger than the top diameter of the second guide cover (60), so that the extrusion force of the melted raw material is increased when it reaches the spherical dispersion box (40) through the first guide cover (50).

6. A multi-channel automatic dispersing extruder according to claim 5, characterized in that: A vertically arranged cylinder (41) is fixedly connected inside the spherical dispersion box (40), so that an annular dispersion chamber (42) is formed between the cylinder (41) and the spherical dispersion box (40), and the top diameter of the cylinder (41) is larger than the bottom diameter thereof, so that the top of the cylinder (41) is connected to the first guide cover (50), and the bottom of the cylinder (41) is connected to the second guide cover (60); A first through hole (43) communicating with the dispersion chamber (42) is provided at the top of the inner wall of the cylinder (41), and a second through hole (44) communicating with the dispersion chamber (42) is provided at the bottom of the inner wall of the cylinder (41), so that the melted raw materials reach the inside of the cylinder (41) via the first guide cover (50), and a small portion of the raw materials inside the cylinder (41) directly reaches the second guide cover (60), while most of the raw materials reach the dispersion chamber (42) through the first through hole (43), are mixed, and are discharged from the second through hole (44) to reach the second guide cover (60).

7. A multi-channel automatic dispersing extruder according to claim 6, characterized in that: The inner wall diameter of the first through hole (43) is larger than the outer wall diameter, and the inner wall diameter of the second through hole (44) is smaller than the outer wall diameter, so that the raw material enters the dispersion chamber (42) from the first through hole (43) and is discharged from the second through hole (44).

8. A multi-channel automatic dispersing extruder according to claim 7, characterized in that: A plurality of rotating rollers (45) are rotatably connected to the inner wall of the dispersion chamber (42), and the rotating rollers (45) are arranged in a horizontal direction, so that after the raw materials enter the dispersion chamber (42) from the first through hole (43), they are continuously separated and merged by the plurality of rotating rollers (45), thereby mixing the raw materials.

9. A multi-channel automatic dispersing extruder according to claim 8, characterized in that: A plurality of dispersion blades (46) are fixedly connected to the outer surface of the rotating roller (45), so that the raw materials are pressed against the dispersion blades (46) under the action of the extrusion force, thereby driving the rotating roller (45) to rotate, thereby stirring and mixing the raw materials.

10. A multi-channel automatic dispersing extruder according to claim 9, characterized in that: At least one transversely arranged baffle (61) is fixedly connected to the inner wall of the second guide cover (60), and a plurality of dispersion channels (62) are provided on the baffle (61), so that the melted raw material is dispersed again through the plurality of dispersion channels (62) under the action of extrusion force.

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