Thread element for double-screw extruder

Abstract

The utility model discloses a thread element for a double-screw extruder, and belongs to the technical field of double-screw extruders. The fixing device comprises a rotating shaft column, a threaded sleeve, connecting rods and a limiting assembly, the threaded sleeve is installed on the outer wall of the rotating shaft column, the connecting rods are fixedly connected to the two ends of the rotating shaft column, guide grooves are formed in one ends of the connecting rods, nuts are connected to the connecting rods in a threaded mode, inserting grooves are formed in the top ends of the nuts in a penetrating mode, and the fixing assembly is inserted into the inserting grooves. The fixing assembly comprises a fixing base, the fixing base is in an inverted U shape, the fixing base is provided with two extending plates, and sliding blocks are arranged on the opposite side walls of the two extending plates. Through cooperation of the guide groove, the fixing assembly and the limiting assembly, accurate installation and positioning of the threaded element are guaranteed, errors are reduced, the moving range of the threaded element is accurately controlled, it is guaranteed that the threaded element works at the correct position, excessive rotation or movement of the threaded element is prevented, and therefore stable operation of a machine is guaranteed; and the position of the connecting rod is ensured not to deviate due to external force through the fixing assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to double screw extruder technical field, concretely is a threaded element for double screw extruder. BACKGROUND

[0002] Screw extruder is the key equipment in the plastic processing industry, is used for the plastic raw material plasticization and is transported to the forming mould, and the core of double screw extruder is two parallel rotating screws, these screws are transported, plasticized and mixed to material through mutual meshing and rotating, and threaded element is the spiral structure on the screw surface, and their design and arrangement have a direct influence on the performance of the extruder. SUMMARY

[0003] The utility model discloses a threaded element for double screw extruder, through the cooperation of guide slot, fixed assembly and limiting assembly, ensure the accurate installation and positioning of threaded element, reduce the error, accurately control the moving range of threaded element, ensure that it works in the correct position, prevent its excessive rotation or movement, thereby ensure the stable operation of machine, through fixed assembly, ensure that the position of connecting rod does not deviate due to external force, avoid causing harm or equipment damage.

[0004] The utility model is realized through the following technical schemes:

[0005] The utility model discloses a threaded element for double screw extruder, including pivot column, threaded sleeve and connecting rod, pivot column outer wall installs threaded sleeve, and pivot column both ends are fixedly connected with connecting rod, and connecting rod one end is seted up with guide slot, and connecting rod is connected with nut, and nut top end is seted up with the plug -in groove, and the plug -in groove is inserted with fixed assembly, and fixed assembly includes fixed seat, and fixed seat is inverted " U " shape, and fixed seat is equipped with two extension boards, and the opposite side wall of two extension boards is seted up with sliding block, and fixed seat bottom surface is connected with first spring, and first spring one end is connected with rubber pad, and rubber pad is seted up in the nut inside through the plug -in groove.

[0006] Still include limiting assembly, and limiting assembly includes pivot, and pivot is rotatably connected on one side of nut, and the pivot is installed with the clamping block, and the clamping block top surface is connected with second spring, and second spring other end is connected on one side of nut outer wall.

[0007] Further, the number of pivot column, threaded sleeve and connecting rod is two, the pivot column is extended to the outside of the threaded sleeve through the threaded sleeve, and the outer wall of the connecting rod is provided with external threads, and the inner wall of the nut is abutted on the outer wall of the connecting rod.

[0008] Further, a notch is formed in the nut, and the number of plug-in grooves is two, the bottom ends of the two plug-in grooves are connected to the notch, and the two extension boards of the fixed seat are slidingly fitted in the two plug-in grooves.

[0009] Further, the plug-in slot opening end is provided with a limiting block, the slider top end abuts against the bottom surface of the limiting block, the fixing seat is connected with the rubber pad through the first spring, and the bottom end of the rubber pad penetrates through the slot and abuts against the inner wall threaded side of the nut.

[0010] Further, the clamping block is rotationally connected to one side of the nut through the rotating shaft, the clamping block is in the shape of a cuboid with extension ends arranged at both ends, recesses matched with the extension ends of the clamping block are arranged on both sides of the inner wall of the guide groove, and the bottom surface of the clamping block abuts against the bottom surface of the inner wall of the guide groove.

[0011] The utility model has the following beneficial effects:

[0012] The utility model discloses the cooperation of guide groove, fixed component and limiting component, ensures the accurate installation and positioning of threaded element, reduces the error, accurately control the moving range of threaded element, guarantees its work in the correct position, prevents its excessive rotation or movement, thereby ensures the stable operation of machine, through fixed component, the position of connecting rod is ensured and will not deviate because of external force, avoids causing harm or equipment damage.

[0013] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. DRAWINGS

[0014] Figure 1 It is a structural schematic view of threaded element;

[0015] Figure 2 It is a structural schematic view of nut, fixed component and limiting component;

[0016] Figure 3 It is an internal structural schematic view of nut, fixed component and limiting component;

[0017] Figure 4 It is an explosion structural schematic view of nut, plug-in slot, fixed component and limiting component.

[0018] In the drawing: 1, rotating shaft column;2, threaded sleeve;3, connecting rod;4, guide groove;5, nut;6, plug-in slot;7, fixed component;701, fixing seat;702, slider;703, first spring;704, rubber pad;8, limiting component;801, rotating shaft;802, clamping block;803, second spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Referring to Figures 1-4 The utility model provides a technical scheme: a threaded element for double screw extruder, including pivot post 1, threaded sleeve 2 and connecting rod 3, pivot post 1 is the main rotating component of double screw extruder, pivot post 1 outer wall is equipped with threaded sleeve 2, so as to contact with material and push material forward, pivot post 1 both ends are fixedly connected with connecting rod 3, the number of pivot post 1, threaded sleeve 2 and connecting rod 3 is two, pivot post 1 extends to the outside of threaded sleeve 2 through threaded sleeve 2, the outer wall of connecting rod 3 is provided with external thread, the inner wall of nut 5 is in contact with the outer wall of connecting rod 3 and is arranged, is used for fixing the position of connecting rod 3, the one end of connecting rod 3 is provided with guide slot 4, nut 5 is threadedly connected on connecting rod 3, the top end of nut 5 is provided with the plug-in slot 6, the inside of nut 5 is provided with the slot, the number of plug-in slot 6 is two, the bottom end of two plug-in slot 6 is communicated slot, the two extension plates of fixed base 701 are slidingly fitted in the inside of two plug-in slot 6, plug-in slot 6 is inserted with fixed assembly 7, fixed assembly 7 includes fixed base 701, fixed base 701 is inverted " U " shape, fixed base 701 is equipped with two extension plates, the opposite side wall of two extension plates is provided with sliding block 702, the bottom surface of fixed base 701 is connected with first spring 703, one end of first spring 703 is connected with rubber pad 704, rubber pad 704 is arranged in the inside of nut 5 through plug-in slot 6, the opening end of plug-in slot 6 is provided with limit block, the top end of sliding block 702 is in contact with the bottom surface of limit block, and the limit block is arranged at the opening end of plug-in slot 6 to limit the movement range of sliding block 702, fixed base 701 is connected with rubber pad 704 through first spring 703, provides certain elastic support, the bottom end of rubber pad 704 is in contact with the inner wall thread side of nut 5 through slot,

[0021] Limiting assembly 8 includes pivot 801, pivot 801 is rotatably connected on one side of nut 5, pivot 801 is installed with clamping block 802, so that clamping block 802 can rotate freely relative to nut 5, while keeping its position, the top surface of clamping block 802 is connected with second spring 803, the other end of second spring 803 is connected on one side of the outer wall of nut 5, provides elastic force, ensures that clamping block 802 can return to its initial position when not subjected to external force, and supports clamping block 802 when clamping block 802 is clamped in the inside of guide slot 4, clamping block 802 is rotatably connected on one side of nut 5 through pivot 801, clamping block 802 is cuboid with two ends provided with extension end, the recesses matched with the extension end of clamping block 802 are formed in the both sides of the inner side wall of guide slot 4, the bottom surface of clamping block 802 is in contact with the bottom surface of the inner wall of guide slot 4, which ensures that the position of connecting rod 3 will not deviate due to external force, and ensures the accuracy and continuity of the extrusion process.

[0022] The inner wall of the nut 5 is in abutment with the outer wall of the connecting rod 3, and the position of the connecting rod 3 is fixed by the external thread; the first spring 703 provides elastic support through the rubber pad 704; when the nut 5 is connected to the connecting rod 3, the rubber pad 704 is in abutment with the thread of the connecting rod 3, thereby assisting the nut 5 in being fixed and limited; when the clamping block 802 is clamped in the guide groove 4, the clamping block 802 is supported, so that the position of the connecting rod 3 cannot be deviated due to external force; when the rotating shaft column 1 rotates, the material in the threaded sleeve 2 is pushed forward; the fixing of the connecting rod 3 and the nut 5 can ensure that the relative position of the rotating shaft column 1 and the threaded sleeve 2 is unchanged, thereby ensuring the accuracy and continuity of the extrusion process.

[0023] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. Threaded element for a twin-screw extruder comprising a spindle column (1), a threaded sleeve (2) and a connecting rod (3), characterized in that: The outer wall of the rotating shaft column (1) is provided with a threaded sleeve (2), both ends of the rotating shaft column (1) are fixedly connected with connecting rods (3), one end of the connecting rod (3) is provided with a guide groove (4), the connecting rod (3) is threadedly connected with a nut (5), the top end of the nut (5) penetrates a plug-in groove (6), the plug-in groove (6) is internally provided with a fixing assembly (7), the fixing assembly (7) comprises a fixed seat (701), the fixed seat (701) is inverted "U" shaped, the fixed seat (701) is provided with two extension plates, both sides of the extension plates are provided with sliding blocks (702), the bottom surface of the fixed seat (701) is connected with a first spring (703), one end of the first spring (703) is connected with a rubber pad (704), the rubber pad (704) is arranged in the nut (5) through the plug-in groove (6); It also comprises a limiting assembly (8), the limiting assembly (8) comprises a rotating shaft (801), the rotating shaft (801) is rotatably connected on one side of the nut (5), the rotating shaft (801) is provided with a clamping block (802), the top surface of the clamping block (802) is connected with a second spring (803), the other end of the second spring (803) is connected on one side of the outer wall of the nut (5).

2. A threaded element for a twin screw extruder according to claim 1, characterized in that The number of the rotating shaft column (1), the threaded sleeve (2) and the connecting rod (3) is two, the rotating shaft column (1) extends through the threaded sleeve (2) and is arranged outside the threaded sleeve (2), the outer wall of the connecting rod (3) is provided with external threads, and the inner wall of the nut (5) is abutted on the outer wall of the connecting rod (3).

3. A threaded element for a twin screw extruder according to claim 1, characterized in that The nut (5) is internally provided with a notch, the number of the plug-in groove (6) is two, the bottom ends of the two plug-in grooves (6) are communicated with the notch, and the two extension plates of the fixed seat (701) are slidingly fitted in the two plug-in grooves (6).

4. A threaded element for a twin screw extruder according to claim 3, characterized in that The opening end of the plug-in groove (6) is provided with a limiting block, the top end of the sliding block (702) is abutted on the bottom surface of the limiting block, the fixed seat (701) is connected with the rubber pad (704) through the first spring (703), and the bottom end of the rubber pad (704) is abutted on the inner wall of the nut (5) on one side of the threads.

5. A threaded element for a twin-screw extruder according to claim 1, characterized in that The clamping block (802) is rotatably connected on one side of the nut (5) through the rotating shaft (801), the clamping block (802) is cuboid-shaped and provided with extension ends at both ends, the inner side walls of the guide grooves (4) are provided with grooves matched with the extension ends of the clamping block (802), and the bottom surface of the clamping block (802) is abutted on the bottom surface of the inner wall of the guide groove (4).

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