A flow dividing device for a plastic extruder

Abstract

The utility model discloses a kind of shunting devices of plastic extruder, belong to the technical field of plastic extruder, including extrusion cylinder, the output end of the extrusion cylinder is provided with connecting disc, connecting mechanism is provided on the connecting disc, overturning disc is provided on the connecting mechanism, shunting outer cylinder is fixedly connected on the overturning disc, extrusion die is provided at the end of the shunting outer cylinder, shunting inner cylinder is sleeved in the inner chamber of the shunting outer cylinder, one end of the inner chamber of the shunting inner cylinder is fixedly sleeved with shunting plate.The utility model in, by the shunting trapezoidal blade of shunting inner cylinder inner chamber to plastic carries out preliminary shunting, subsequent by multiple conical shunting hole to plastic carries out again shunting, guarantee the effect of shunting, in addition, one end of conical shunting hole inner chamber is connected together, cannot block molten plastic, guarantee that molten plastic can all be guided by the inclined plane of conical shunting hole inner side, guarantee the smoothness of shunting, and good practicability.

Description

Technical Field

[0001] This utility model relates to the field of plastic extruder technology, and more specifically, to a flow diversion device for a plastic extruder. Background Technology

[0002] In plastic parts processing technology, extrusion is generally used for molding. The extrusion process involves adding plastic into an extrusion barrel, and the plastic is extruded by rotating the threaded rod inside the extrusion barrel. The extruded material is then extruded into the extrusion die through the extrusion orifice. In order to improve the uniformity of material extrusion, a flow divider is added between the extrusion orifice and the extrusion die.

[0003] A search revealed that utility model patent CN218084096U discloses a diversion device for a plastic extruder, comprising an extruder, a connecting plate installed at the left end of the extruder, a hinge seat installed on the right side of the front of the connecting plate, an mounting base installed on the connecting plate via the hinge seat, and an extrusion die installed at the left end of the mounting base; a fixed hinge seat with a circumferential distribution is installed on the left end face of the mounting base, a limit plate is rotatably connected to the mounting base via the fixed hinge seat, a positioning bolt is installed at the middle of the right end face of the limit plate, a diversion plate is installed inside the rear side of the mounting base, a limit strip with a circumferential distribution is installed on the outer wall of the diversion plate, uniformly distributed diversion holes are opened on the left end face of the diversion plate, and a diversion groove is opened on the back of the diversion plate at a position corresponding to the diversion holes. The overall structure is simple, easy to use, and has high stability and practicality.

[0004] However, the aforementioned patent has the following shortcomings: there is a certain distance between each diversion hole, and during the material diversion process, some material will be blocked in the area adjacent to the diversion hole, affecting the smoothness of the diversion. To address this, we propose a diversion device for a plastic extruder. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a diversion device for a plastic extruder.

[0006] To solve the above problems, this utility model adopts the following technical solution: a flow-dividing device for a plastic extruder, including an extrusion cylinder, a connecting plate at the output end of the extrusion cylinder, a connecting mechanism on the connecting plate, a tilting plate on the connecting mechanism, a flow-dividing outer cylinder fixedly connected to the tilting plate, an extrusion die at the end of the flow-dividing outer cylinder, a flow-dividing inner cylinder fitted inside the inner cavity of the flow-dividing outer cylinder, a flow-dividing plate fixedly fitted at one end of the inner cavity of the flow-dividing inner cylinder, a plurality of conical flow-dividing holes on the flow-dividing plate, a flow-dividing trapezoidal blade fixedly connected to the inner cavity of the flow-dividing inner cylinder, a slot on the side of the flow-dividing inner cylinder, a locking block fitted inside the slot, a filter screen fixedly connected to the top surface of the locking block, the side of the filter screen fitting against the inner wall of the flow-dividing inner cylinder, and a non-detachable screw fixedly installed on the tilting plate.

[0007] As a preferred embodiment of this utility model, the connecting mechanism includes two rotating bases fixedly connected to the side of the connecting disk and a screw hole opened on the connecting disk. A rotating block is rotatably connected between the two rotating bases. The end of the rotating block is connected to the flip disk, and the end of the non-detachable screw is threaded into the inner cavity of the screw hole.

[0008] As a preferred embodiment of this utility model, the inner wall of the diversion outer cylinder is provided with two sliding grooves, and both sides of the diversion inner cylinder are provided with sliders, the ends of the sliders being movably sleeved into the inner cavity of the sliding grooves.

[0009] As a preferred embodiment of this utility model, a sealing groove is provided on the end face of the connecting plate, and a sealing gasket is fixedly sleeved in the inner cavity of the sealing groove, with the end of the sealing gasket fitting against the flip plate.

[0010] In a preferred embodiment of this utility model, the outer side of the inner diversion cylinder and the inner side of the outer diversion cylinder are in contact with each other.

[0011] In a preferred embodiment of this utility model, the inner wall of the groove and the outer surface of the slider are in contact.

[0012] Compared with the prior art, the advantages of this utility model are as follows: In this utility model, the plastic is initially diverted by the diverting trapezoidal blade in the inner cavity of the diverting inner cylinder, and then the plastic is diverted again by multiple conical diverting holes to ensure the diversion effect; and one end of the inner cavity of the conical diverting holes is connected to each other, so as not to block the molten plastic, and to ensure that the molten plastic can be guided through the inclined surface on the inner side of the conical diverting hole, ensuring the smoothness of the diversion and good practicality. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 is an exploded view of the overall structure of this utility model.

[0015] Figure 3 is an exploded view of the structure of the flip plate, the diversion inner cylinder and the filter screen of this utility model.

[0016] Figure 4 is a schematic diagram of the structure of the connecting plate of this utility model.

[0017] Figure 5 is a schematic diagram of the structure of the diversion inner cylinder of this utility model.

[0018] The following are the labels in the diagram: 1. Extrusion cylinder; 2. Connecting disc; 3. Connecting mechanism; 4. Tilting disc; 5. Diverter outer cylinder; 6. Extrusion die; 7. Diverter inner cylinder; 8. Diverter plate; 9. Conical diverter hole; 10. Diverter trapezoidal blade; 11. Slot; 12. Slot block; 13. Filter screen; 14. Slide groove; 15. Slider; 16. Rotating base; 17. Rotating block; 18. Screw hole; 19. Unremovable screw; 20. Sealing groove; 21. Sealing gasket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0022] As shown in Figures 1 to 5, a flow-dividing device for a plastic extruder includes an extrusion cylinder 1. A connecting plate 2 is provided at the output end of the extrusion cylinder 1. A connecting mechanism 3 is provided on the connecting plate 2. A tilting plate 4 is provided on the connecting mechanism 3. A flow-dividing outer cylinder 5 is fixedly connected to the tilting plate 4. An extrusion die 6 is provided at the end of the flow-dividing outer cylinder 5. A flow-dividing inner cylinder 7 is fitted inside the inner cavity of the flow-dividing outer cylinder 5. One end of the flow-dividing inner cylinder 7 is fitted with one end of the inner cavity of the flow-dividing outer cylinder 5, and the other end of the flow-dividing inner cylinder 7 is fitted with the end of the extrusion cylinder 1. Furthermore, the inner diameter of the extrusion cylinder 1 and the inner diameter of the flow-dividing inner cylinder 7 are equal. A flow-dividing plate 8 is fixedly fitted at one end of the inner cavity of the flow-dividing inner cylinder 7. Multiple tapered flow-dividing holes 9 are provided on the flow-dividing plate 8. A flow-dividing trapezoidal blade 10 is fixedly connected to the inner cavity of the flow-dividing inner cylinder 7. A slot 11 is provided on the side of the flow-dividing inner cylinder 7. A locking block 12 is fitted inside the inner cavity of the slot 11. The side of the card block 12 fits against the inner wall of the slot 11 to ensure the stability of the card block 12 in the inner cavity of the slot 11. The top surface of the card block 12 is fixedly connected to the filter screen 13. The side of the filter screen 13 fits against the inner wall of the diversion inner cylinder 7. The flip plate 4 is fixedly installed with a non-detachable screw 19. The inner wall of the diversion outer cylinder 5 is provided with two sliding grooves 14. Both sides of the diversion inner cylinder 7 are provided with sliders 15. The ends of the sliders 15 are movably sleeved into the inner cavity of the sliding grooves 14. Example 2

[0023] Based on Embodiment 1, as shown in Figures 1 to 4, the connecting mechanism 3 includes two rotating bases 16 fixedly connected to the side of the connecting disk 2 and a screw hole 18 opened on the connecting disk 2. A rotating block 17 is rotatably connected between the two rotating bases 16. The end of the rotating block 17 is connected to the flip disk 4. The end of the captive screw 19 is threaded into the inner cavity of the screw hole 18. The connecting disk 2 and the flip disk 4 are fixed by the cooperation of the captive screw 19 and the screw hole 18. Example 3

[0024] Based on Embodiment 1 and Embodiment 2, as shown in Figures 1 to 5, a sealing groove 20 is provided on the end face of the connecting plate 2. A sealing gasket 21 is fixedly fitted into the inner cavity of the sealing groove 20. The end of the sealing gasket 21 is in contact with the flip plate 4. The sealing gasket 21 seals the flip plate 4 and the connecting plate 2. The outer side of the inner diversion cylinder 7 is in contact with the inner side of the outer diversion cylinder 5 to ensure the stability and sealing of the inner diversion cylinder 7 fitted into the inner cavity of the outer diversion cylinder 5. The inner wall of the slide groove 14 is in contact with the outer side of the slider 15 to ensure the stability of the slider 15 fitted into the inner cavity of the slide groove 14.

[0025] It should be noted that this utility model is a flow-dividing device for a plastic extruder. In use, the extrusion cylinder 1 first pushes the molten plastic, which enters the inner cavity of the flow-dividing inner cylinder 7 through the filter screen 13. Then, the flow-dividing trapezoidal blade 10 cuts and divides the molten plastic. Then, the plastic after initial diversion is extruded into multiple conical flow-dividing holes 9, and the plastic is further divided through the conical flow-dividing holes 9. Finally, the plastic after diversion is extruded and formed through the extrusion die 6.

[0026] 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 its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A flow-diverting device for a plastic extruder, comprising an extrusion cylinder (1), characterized in that: The output end of the extrusion cylinder (1) is provided with a connecting plate (2), the connecting plate (2) is provided with a connecting mechanism (3), the connecting mechanism (3) is provided with a rotating plate (4), the rotating plate (4) is fixedly connected with a diverter outer cylinder (5), the end of the diverter outer cylinder (5) is provided with an extrusion die (6), the inner cavity of the diverter outer cylinder (5) is fitted with a diverter inner cylinder (7), one end of the inner cavity of the diverter inner cylinder (7) is fixedly fitted with a diverter plate (8), the diverter plate (8) 8) Multiple conical diversion holes (9) are provided on the upper part. A diversion trapezoidal blade (10) is fixedly connected to the inner cavity of the diversion inner cylinder (7). A slot (11) is provided on the side of the diversion inner cylinder (7). A locking block (12) is sleeved in the inner cavity of the slot (11). A filter screen (13) is fixedly connected to the top surface of the locking block (12). The side of the filter screen (13) is in contact with the inner wall of the diversion inner cylinder (7). A non-detachable screw (19) is fixedly installed on the flip plate (4).

2. The diversion device for a plastic extruder according to claim 1, characterized in that: The connecting mechanism (3) includes two rotating bases (16) fixedly connected to the side of the connecting plate (2) and a screw hole (18) opened on the connecting plate (2). A rotating block (17) is rotatably connected between the two rotating bases (16). The end of the rotating block (17) is connected to the flip plate (4). The end of the non-detachable screw (19) is threaded into the inner cavity of the screw hole (18).

3. The diversion device for a plastic extruder according to claim 1, characterized in that: The inner wall of the diversion outer cylinder (5) is provided with two sliding grooves (14), and both sides of the diversion inner cylinder (7) are provided with sliders (15), the ends of the sliders (15) are movably sleeved into the inner cavity of the sliding grooves (14).

4. The diversion device for a plastic extruder according to claim 1, characterized in that: The end face of the connecting plate (2) is provided with a sealing groove (20), and a sealing gasket (21) is fixedly sleeved in the inner cavity of the sealing groove (20). The end of the sealing gasket (21) is in contact with the flip plate (4).

5. A flow-diverting device for a plastic extruder according to claim 1, characterized in that: The outer side of the inner diversion cylinder (7) and the inner side of the outer diversion cylinder (5) are in contact.

6. A flow-diverting device for a plastic extruder according to claim 3, characterized in that: The inner wall of the groove (14) and the outer surface of the slider (15) are in contact.

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