Multi-purpose compounds production machine with an inverted conical screw that intermeshing and co-rotating

Abstract

The invention relates to a plastic compound production machine which is used in compound production processes to change the electrical, physical and chemical properties of polymers by adding different raw materials under appropriate process conditions and equipment and which enables the production of thermoplastic compound (HFFR, PVC, PE, PP, PS, PMMA, PC, Biobased polymers, PA PVC and PE based materials) products containing a mixture of polymers with different functional additives and fillers with dispersive and distributive mixing capability.

Description

[0001] MULTI-PURPOSE COMPOUNDS PRODUCTION MACHINE WITH AN INVERTED CONICAL SCREW THAT INTERMESHING AND CO-ROTATING

[0002] Field of the Invention

[0003] The invention relates io a machine used in compound production processes for changing the electrical, physical and chemical properties of polymers by adding different raw materials and using appropriate process conditions and equipment.

[0004] The invention specifically relates to a machine which eliminates the problems encountered in the compounding of high filler and shear sensitive, temperaturesensitive products by producing thermoplastic compounds (HFFR, PVC, PE, PP, PS, PMMA, PC, Biobased polymers, PA PVC and PE-based materials) containing a mixture of polymers with different functional additives and fillers by means of dispersive and distributive mixing capability by means of an inverted conical twin screw rotating in the same direction.

[0005] State of the Art

[0006] Plastic compound production has become an important industrial process nowadays. Compound materials consisting of a combination of polymer and inorganic materials are widely preferred in the production of products with important properties for many industrial applications.

[0007] In the present art, internal mixer type, twin screw type and co-kneader type machines are used as compound production techniques in plastic compound production. During the production of the compound, it is known that screws are widely used in the processes of transferring the produced compound in the molten form, passing it through a perforated plate by applying pressure, and cutting the perforated plate through a rotary cutting blade placed on the front face. Although the screw and transfer systems used are similar to each other from time to time, they vary according to different shape, geometry, size and temperature control methods depending on the ratios of the components in the product, production speed, physical properties and chemical of the components. Batch production is carried out in internal mixer type machines. All components in the compound to be produced are fed to the internal mixer with or without premixing. In internal mixers that give good results in the production of compounds containing high amounts of inorganic components, the mixture differences between the prepared batches and the temperature differences occurring in the process make it difficult to achieve standard production quality.

[0008] Continuous production is carried out in parallel twin screw machines. It is more difficult to control a high amount of inorganic component mixture in such systems compared to internal mixer type machines. Since the amount of metal hydroxide additive is high, standard product quality is obtained with continuous production in multi-feed machines, but the investment, operation and maintenance costs and the complexity of the production line constitute disadvantages.

[0009] Whereas co-kneader type machines are suitable for limited product types. There is insufficient performance in products containing high filler.

[0010] In existing compound production systems, conically placed screws rotating in the opposite direction, co-rotating twin screws with the same diameter, counter-rotating non-intermeshing screws (internal mixer type), counter rotating twin screws with the same diameters, multiple feeding systems (usually 3 side feeding) are used to fully realize the dispersive and distributive mixture of polymer and inorganic materials. In multi-feed systems, the mixture ratios should be as much as the values determined in the formula. Deviations in polymer or inorganic materials may cause changes in the physical and chemical values of the final product. In multi-feed systems, the screw diameter-to-length ratio is quite long. This causes the existing systems to be quite long and to take up more space in the settlement. At the same time, investment costs are therefore very high.

[0011] In the present art, there is a need to eliminate the problems experienced in the production of high filler and shear sensitive, temperature-sensitive products in the machines used in the production of plastic compounds.

[0012] As a result due to the said disadvantages and the insufficiency of the current solutions regarding the subject matter, a development is required to be made in the relevant technical field. The Objective of the Invention

[0013] The invention relates to a plastic compound production machine that eliminates said disadvantages and brings new advantages to the relevant technical field.

[0014] The main object of the invention is to provide a machine that enables the production of thermoplastic compound (HFFR, PVC, PE, PP, PS, PMMA, PC, Biobased polymers, PA PVC and PE-based materials) products containing different functional additives and filler material mixtures of polymers with dispersive and distributive mixing ability by means of reverse conical twin screw rotating in the same direction.

[0015] The object of the invention is to provide a machine that eliminates the problems experienced in the production of the compounds of high filler and shear sensitive, temperature-sensitive products thanks to the dispersive and distributive mixing ability of the reverse conical twin screw rotating in the same direction.

[0016] Another object of the invention is to provide a machine with a smaller screw diameter- to-length ratio than the existing systems used in the production of the compound due to its geometric structure.

[0017] Another object of the invention is to provide a machine for obtaining a homogeneously mixed compound by utilizing the peripheral speed differences of two conical screws rotating in the same direction, which are positioned opposite to each other, thanks to different screw diameters.

[0018] Another object of the invention is to provide a machine which enables production to be carried out without any molten material remaining on the screws by continuously moving the material on the screws towards the outlet by means of the reverse conical twin screw rotating in the same direction cleaning each other during production.

[0019] Another object of the invention is to provide a machine with a compact design with a single point of feed compared to multi-feed and parallel twin screw machines in the process of producing compound (HFFR, Thermoplastic materials, PVC and PE-based materials) products containing a mixture of polymer and inorganic materials. Another object of the invention is to provide a machine that prevents the differences in quality and product characteristics between the batches of the products produced in internal mixer type machines by continuous production with single point feeding.

[0020] Another object of the invention is to provide a machine supported by a user-friendly and uncomplicated compact system that can make dispersive and distributive mixing much more effectively than existing production techniques.

[0021] In order to fulfil all the said objects and others that may arise from the detailed description, the invention is a plastic compound production machine used in compound production processes to change the electrical, physical and chemical properties of polymers by adding different raw materials under appropriate process conditions and using equipment characterized by comprising the following,

[0022] - transmission body,

[0023] - barrel connected to the transmission body,

[0024] - a first screw and a second screw in the barrel, each having an inverted conical form and different diameter sizes, rotating in the same direction to ensure homogeneous mixing of the mixed material with dispersive and distributive mixing capability,

[0025] - drive gear group, which is located in the transmission body and enables the first screw and the second screw to rotate in the same direction by means of the reductor gear motor connected to the transmission body, raw material feeding zone located on the barrel, which ensures the feeding of the fed mixed material to the first screw and the second screw, the first screw conveying zone which is located on the first screw and ensures that the mixed material fed from the raw material feeding zone is advanced on the first screw and that at the same time the first screw and the second screw clean each other, the second screw conveying zone which is located on the second screw and ensures that the mixed material fed from the raw material feeding zone is advanced on the second screw and that at the same time the first screw and the second screw clean each other, the first screw compression zone, which forms the conical form of the first screw and enables the first screw to have dispersive and distributive mixing capability, the second screw compression zone, which forms the conical form of the second screw and enables the second screw to have dispersive and distributive mixing capability, the first screw ribbed zone at the end of the first screw, where the dispersive and distributive mixing of the material continues after the first screw compression zone, allowing the material, whose mixing is completed and becomes a homogeneous compound, to move forward and exit, the second screw ribbed zone at the end of the second screw, where the dispersive and distributive mixing of the material continues after the second screw compression zone, allowing the material, whose mixing is completed and becomes a homogeneous compound, to move forward and exit,

[0026] - a screw gap adjustment group motor, which is connected to the transmission body and provides power for reciprocating movement (back and forth movement) of the first screw and the second screw,

[0027] - a first screw gap adjustment screw which is connected to the screw gap adjustment group motor and connected to the first screw by means of the screw gap adjustment group,

[0028] - a second screw gap adjustment screw which is connected to the screw gap adjustment group motor and connected to the second screw by means of the screw gap adjustment group,

[0029] - first screw gap adjustment group which positions the first screw back and forth with the drive received from the first screw gap adjustment screw that rotated by the screw gap adjustment group motor,

[0030] - second screw gap adjustment group which positions the second screw back and forth with the drive received from the second screw gap adjustment screw that rotated by the screw gap adjustment group motor, a transfer screw which is positioned on the underside of the first screw and the second screw and which rotates in the screw barrel by means of the transfer gear motor connected to the screw barrel, so that the material is advanced to be granulated after exiting the first screw ribbed zone and the second screw ribbed zone, transfer feed on the screw barrel, which feeds the material exiting the first screw ribbed zone and the second screw ribbed zone to the transfer screw,

[0031] - dye plate in multi-perforated form, located at the end of the screw barrel and enabling the granulation of the molten material transmitted by the transfer screw, the pellet cutter, which is located in front of the dye plate and cuts the material coming out of the dye plate with the drive it receives from the pellet cutter electric motor which it is connected to.

[0032] The structural and characteristic features and all advantages of the invention will be more clearly understood by means of the following figures and the detailed description with reference to these figures. Therefore, the assessment should be made while considering the figure and their detailed descriptions.

[0033] Figures for a Better Understanding of the Invention

[0034] Figure 1 : General view of the plastic compound production machine of the invention. Figure 2: Detailed view of the plastic compound production machine of the invention. Figure 3: Detailed view of the plastic compound production machine of the invention. Figure 4: Detailed view of the first screw and the second screw of the plastic compound production machine of the invention.

[0035] Figure 5: Detailed sectional view of the first screw and the second screw of the plastic compound production machine of the invention.

[0036] Figure 6: Mixture view of the compound material in the present art.

[0037] Figure 7: The appearance of the mixture applied with the plastic compound production machine of the invention.

[0038] Descriptions of Component References

[0039] 10. Raw material feeding zone

[0040] 20. First screw

[0041] 30. Second screw

[0042] 40. Barrel

[0043] 50. First screw conveying zone

[0044] 60. Second screw conveying zone

[0045] 70. First screw compression zone

[0046] 80. Second screw compression zone

[0047] 90a. First screw ribbed zone

[0048] 90b. Second screw ribbed zone

[0049] 100. Transmission body

[0050] 110. Drive gear group 120. Gap adjustment group motor

[0051] 130a. First screw gap adjustment screw

[0052] 130b. Second screw gap adjustment screw

[0053] 140a. First screw gap adjustment group

[0054] 140b. Second screw gap adjustment group

[0055] 150. Reductor gear motor

[0056] 160. Screw front bearing

[0057] 170. Screw centering

[0058] 180. Transfer gear motor

[0059] 190. Torque increase reductor

[0060] 200. T ransfer feed

[0061] 210. T ransfer screw

[0062] 220. Screw barrel

[0063] 230. Dye plate

[0064] 240. Pellet cutter

[0065] 250. Pellet cutter electric motor

[0066] Detailed Description of the Invention

[0067] In this detailed description, the preferred alternatives of the plastic compound production machine of the invention are explained only for a better understanding of the subject and in a way that does not have any limiting effect.

[0068] Sectional views of the plastic compound production machine of the invention are given in Figures 1 and 2. Accordingly, the plastic compound production machine is in its most basic form; transmission body (10) with dual output connected to the reductor gear motor (150), a barrel (40) connected to the transmission body (100), a first screw (20) and a second screw (30) in the form of an inverted cone located in the barrel (40) which rotate in the same direction in order to ensure homogeneous mixing of the mixed material, a drive gear group (1 10) which ensures that the first screw (20) and the second screw (30) rotate in the same direction in the transmission body (100), a screw gap adjustment group motor (120) for providing power for reciprocating movement (back and forth movement) of the first screw (20) and the second screw (30), first screw gap adjustment screw (130a) and second screw gap adjustment screw (130b) connected to the screw gap adjustment group motor (120), a first screw gap adjustment group (140a) which reciprocates the first screw (20) by means of a drive from the first screw gap adjustment screw (130a), a second screw gap adjustment group (140b) which reciprocates the second screw (30) by means of a drive from the second screw gap adjustment screw (130b), a first screw ribbed zone (90a) which provides the outlet of the compounded homogeneous product, the mixing of which is completed in the first screw (20), a second screw ribbed zone (90b) which provides the outlet of the compounded homogeneous material, the mixing of which is completed in the second screw (30), the screw front bearing (160) which is connected to the barrel (40) and enables the first screw (20) and the second screw (30) to perform rotational movement without oscillation, screw centering (170), which is located on the screw front bearing (160) and ensures that the first screw (20) and the second screw (30) rotate without runout parallel to the center and axis, transfer feed (200), which ensures that the material from the first screw (20) and the second screw (30) is fed to the transfer screw (210), the transfer screw (210) for conveying the molten material to the dye plate (230), the dye plate (230) for granulating the molten material, the pellet cutter (240) for cutting the material coming out of the dye plate (230).

[0069] In the plastic compound production machine of the invention, a reductor gear motor (150), which is shown in Figure 2 and constitutes the power source of the plastic compound production machine, is connected to a transmission body (100) with dual output for homogeneous mixing of the mixed material. A barrel (40) is placed into said transmission body (100). There is at least one raw material feeding zone (10) on the barrel (40).

[0070] A first screw (20) and a second screw (30) are mounted in the barrel (40), which rotate in the same direction to ensure homogeneous mixing of the mixed material with dispersive and distributive mixing capability. The first screw (20) and the second screw (30) shown in Figures 4 and 5 have an inverted conical form and have different diameter dimensions. The first screw (20) and the second screw (30) rotate in the same direction by means of the drive gear group (1 10), which is located in the transmission body (100) and driven by the reductor gear motor (150).

[0071] The first screw conveying zone (50) is formed on the first screw (20), which allows the mixed material fed from the raw material feeding zone (10) to be advanced on the first screw (20) and at the same time the first screw (20) and the second screw (30) to clean each other. A second screw conveying zone (60) is formed on the second screw (30), which allows the mixed material fed from the raw material feeding zone (10) to be advanced on the second screw (30) and at the same time, the first screw (20) and the second screw (30) to clean each other.

[0072] The first screw compression zone (70) forming the conical form of the first screw (20), provides the first screw (20) with dispersive and distributive mixing capability. The second screw compression zone (80), which forms the conical form of the second screw (30), enables the second screw (30) to have dispersive and distributive mixing capability. Figure 6 shows the appearance of the mixture of the compound material in the present technique and Figure 7 shows the appearance of the mixture applied with the plastic compound production machine of the invention.

[0073] The first screw ribbed zone (90a) at the end of the first screw (20) is the section where the dispersive and distributive mixing of the material continues after the first screw compression zone (70) and where the material, whose mixing is completed and becomes a homogeneous compound, is progressively discharged.

[0074] The second screw ribbed zone (90b) at the end of the second screw (30) is the section where the dispersive and distributive mixing of the material continues after the second screw compression zone (80) and the material, whose mixing is completed and becomes a homogeneous compound, is progressively discharged.

[0075] A screw gap adjustment group motor (120) is coupled to the transmission body (100) for reciprocating movement (back and forth movement) of the first screw (20) and the second screw (30). The first screw gap adjustment screw (130a) and the second screw gap adjustment screw (130b) are connected to the screw gap adjustment group motor (120). The first screw gap adjustment screw (130a) and the second screw gap adjustment screw (130b) perform rotational movement by means of the screw gap adjustment group motor (120) to which they are connected. The said first screw gap adjustment screw (130a) is connected to the first screw (20) by means of the first screw gap adjustment group (140a). Whereas the second screw gap adjustment screw (130b) is connected to the second screw (30) by means of the second screw gap adjustment group (140b).

[0076] The first screw gap adjustment group (140a) positions the first screw (20) reciprocatively by means of a drive from the first screw gap adjustment screw (130a) rotated by the screw gap adjustment group motor (120). The second screw gap adjustment group (140b) positions the second screw (30) reciprocatively by means of a drive from the first screw gap adjustment screw (130b) rotated by the screw gap adjustment group motor (120). By reciprocating (back and forth movement) the first screw (20) and the second screw (30) in the barrel (40), the gaps between the barrel (40) and the first screw (20) and the second screw (30) can be adjusted. In this way, it is ensured that the plastic compound production machine of the invention can be suitable for different formulations and can have variable capacities.

[0077] At the end of the barrel (40), the screw front bearing (160) is connected, which allows the first screw (20) and the second screw (30) to rotate without oscillation. On the screw front bearing (160) there is a screw centering (170) which ensures that the first screw (20) and the second screw (30) rotate without runout parallel to the center and axis.

[0078] The material, which is homogeneously mixed with dispersive and distributive mixing capability by means of the first screw (20) and the second screw (30), enters the transfer screw (210) positioned at the bottom of the first screw (20) and the second screw (30) as shown in Figure 1 to be granulated after exiting from the first screw ribbed zone (90a) and the second screw ribbed zone (90b). The transfer screw (210) rotates in a screw barrel (220), as shown in figure 3, by means of a transfer gear motor (180) connected to the screw barrel (220). A torque increase reductor (190) is coupled to the transfer gear motor (180). The said torque increase reductor (190) converts the input power received from the transfer gear motor (180) into the desired torque values by multiplying it and transmits it to the transfer screw (210).

[0079] On the screw barrel (220), there is a transfer feed (200) for feeding the material exiting the first screw ribbed zone (90a) and the second screw ribbed zone (90b) to the transfer screw (210). At the end of the screw barrel (220) there is a dye plate (230). The transfer screw (210) conveys the molten material to the dye plate (230). The dye plate (230) is a multi-perforated part for granulating the molten material. In front of the dye plate (230) is a pellet cutter (240), which is connected to a pellet cutter electric motor (250) and which cuts the material exiting the dye plate (230) by means of a drive from said pellet cutter electric motor (250).

[0080] The working principle of the plastic compound production machine of the invention is as follows; The first screw (20) and the second screw (30), which operate simultaneously and in the same direction, are fed with the mixed material from the raw material feeding zone (10). The first screw conveying zone (50) and the second screw conveying zone (60), which are located in the space between the first screw (20), the second screw (30) and the barrel (40), ensure the conveying (movement ) of the materials. When the advancing material reaches the first screw compression zone (70) and the second screw compression zone (80), dispersive and distributive mixing starts due to the difference in pressure, temperature and peripheral velocity. The material continues to be mixed on the first screw (20) and the second screw (30) and moves into the first screw ribbed zone (90a) and the second screw ribbed zone (90b). The compounded homogeneous material, whose mixing is completed, is discharged by advancing through the first screw ribbed zone (90a) and the second screw ribbed zone (90b).

[0081] The molten material is fed into the transfer feed (20). The transfer screw (210) rotates by means of the drive power received from the transfer gear motor (180) and the material is pushed by the transfer screw (210) into the dye plate (230). The material coming out of the dye plate (230) in long form, the pellet cutter (240) performs continuous pellet cutting with the power received from the pellet cutter electric motor (250). Compounded products are sent to the cooling and storage area.

Claims

CLAIMS1. A plastic compound production machine used in compound production processes for changing the electrical, physical and chemical properties of polymers by adding different raw materials and using appropriate process conditions and equipment, and comprising a transmission body (100), a barrel (40) connected to the transmission body (100), characterized by comprising;- a first screw (20) and a second screw (30) of different diameters and in the form of an inverted cone, which are located in the barrel (40) and which rotate in the same direction to ensure homogeneous mixing of the mixed material with dispersive and distributive mixing capability, first screw ribbed zone (90a) at the end of the first screw (20), which allows the dispersive and distributive mixing of the material is completed and the homogeneous compounded material is progressively ejected,- second screw ribbed zone (90b) at the end of the second screw (30), which allows the dispersive and distributive mixing of the material to be completed and the homogeneous compounded material to be progressively ejected,- screw gap adjustment group motor (120) connected to the transmission body (100) and providing power for reciprocating movement (back and forth movement) of the first screw (20) and the second screw (30),- first screw gap adjustment screw (130a), which is connected to the screw gap adjustment group motor (120) and connected to the first screw (20) via the first screw gap adjustment group (140a),- second screw gap adjustment screw (130b), which is connected to the screw gap adjustment group motor (120) and connected to the second screw (30) via the second screw gap adjustment group (140b),- first screw gap adjustment group (140a), which reciprocates the first screw (20) by means of a drive from the first screw gap adjustment screw (130a) rotated by the screw gap adjustment group motor (120),- second screw gap adjustment group (140b), which positions the second screw (30) reciprocatively by means of a drive from the second screw gap adjustment screw (130b) rotated by the screw gap adjustment group motor (120).

2. The plastic compound production machine according to claim 1 , characterized by comprising; a drive gear group (1 10) which is located in the said transmission body (100), enables the first screw (20) and the second screw (30) to rotate in the same direction by means of a reductor gear motor (150) that connected to the transmission body (100).

3. The plastic compound production machine according to claim 1 , characterized by comprising; a raw material feeding zone (10), which is located on said barrel (40) and which enables the feeding of the fed mixed material to the first screw (20) and the second screw (30).

4. The plastic compound production machine according to claim 1 , characterized by comprising; a first screw conveying zone (50) which is located on the said first screw (20), which enables the mixed material fed from the raw material feeding zone (10) to move on the first screw (20) and at the same time enables the first screw (20) and the second screw (30) to clean each other.

5. The plastic compound production machine according to claim 1 , characterized by comprising; a second screw conveying zone (60) which is located on the said second screw (30), which enables the mixed material fed from the raw material feeding zone (10) to be advanced on the second screw (30) and at the same time enables the first screw (20) and the second screw (30) to clean each other.

6. The plastic compound production machine according to claim 1 , characterized by comprising; a first screw compression zone (70), which forms the conical form of the said first screw (20) and enables the first screw (20) to have dispersive and distributive mixing capability.

7. The plastic compound production machine according to claim 1 , characterized by comprising; a second screw compression zone (80), which forms the conical form of the said second screw (30) and enables the second screw (30) to have dispersive and distributive mixing capability.

8. The plastic compound production machine according to claim 1 , characterized by comprising; a transfer screw (210) positioned on the underside of the saidfirst screw (20) and second screw (30) and rotating in a screw barrel (220) by means of a transfer gear motor (180) connected to the said screw barrel (220), to advance the material to be granulated after exiting the first screw ribbed zone (90a) and the second screw ribbed zone (90b).

9. The plastic compound production machine according to claim 8, characterized by comprising; a torque increase reductor (190) which is connected to said transfer gear motor (180) and converts the input power received from the transfer gear motor (180) into desired torque values by folding and transmits it to the transfer screw (210).

10. The plastic compound production machine according to claim 8, characterized by comprising; a transfer feed (200) which is located on said screw barrel (220) and enables the feeding of the material exiting the first screw ribbed zone (90a) and the second screw ribbed zone (90b) to the transfer screw (210).11 . The plastic compound production machine according to claim 8, characterized by comprising; a dye plate (230) in multi-perforated form, which is located at the end of said screw barrel (220) and granulates the molten material delivered by the transfer screw (210).

12. The plastic compound production machine according to claim 11 , characterized by comprising; a pellet cutter (240), which is located in front of the said dye plate (230) which cuts the material coming out of the dye plate (230) with the drive received from the pellet cutter electric motor (250) which it is connected to.

13. The plastic compound production machine according to claim 1 , characterized by comprising; a screw front bearing (160), which is connected to the end of said barrel (40) and enables the first screw (20) and the second screw (30) to perform a rotational movement without oscillation.

14. The plastic compound production machine according to claim 13, by comprising; a screw centering (170) located on said screw front bearing (160), which ensures that the first screw (20) and the second screw (30) rotate without runout parallel to the center and axis.

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