Screw push-out device

Abstract

The screw push-out device comprises a connecting piece, the connecting piece is provided with a first end and a second end which are opposite in the first direction, the first end of the connecting piece is used for being fixedly connected with a quick connecting piece, the connecting piece is provided with a through hole penetrating in the first direction, and the peripheral side face of the connecting piece is provided with an opening part capable of being communicated with the through hole of the connecting piece; the second end of any sectional type push rod can be detachably connected with the first end of the other sectional type push rod, and any sectional type push rod can be placed in the through hole through the opening part; and the pushing mechanism is connected to the second end of the connecting piece, and the pushing mechanism is used for pushing the sectional type push rod into the machine barrel of the extruder, so that the screw in the machine barrel is pushed out. According to the screw push-out device disclosed by the utility model, the screw can be pushed out of a machine barrel without discharging and cleaning a single-screw extruder, and the real forms of materials in different sections of the screw are shown to a process engineer for reference analysis without being damaged.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, specifically to a screw ejection device. Background Technology

[0002] Single-screw extruders are widely used in the plastics processing industry, and the design and operation of the screw are crucial to the material processing. To ensure proper plasticization and processing of materials in different sections, the screw of a single-screw extruder is typically divided into three main parts: the conveying section, the compression section, and the metering section. Because the screw of a single-screw extruder has these sections and different functions, it is particularly important for process engineers to confirm the actual condition of the material in different sections of the screw. Since the extruder barrel is generally made of opaque material, engineers cannot directly observe the state of the material inside the screw. Without pushing and cleaning the screw, the significant resistance generated by the material's viscosity and other factors makes it impossible to directly pull out the screw for observation using traditional screw removal devices. Therefore, advanced technologies and equipment are needed to more accurately grasp the condition of the material inside the screw, ensuring the stability and efficiency of the extrusion process. Utility Model Content

[0003] To overcome the above shortcomings, the purpose of this utility model is to provide a screw ejection device that can eject the screw from the barrel without discharging and cleaning the single-screw extruder, thus presenting the true form of the material in different segments of the screw to process engineers for reference and analysis without damage.

[0004] Technical solution: This utility model discloses a screw ejection device, comprising:

[0005] A connector having a first end and a second end opposite to each other along a first direction, the first end of the connector being used for fixed connection with a quick connector, the connector being provided with a through hole extending along the first direction, and the peripheral side of the connector being provided with an opening that can communicate with the through hole of the connector.

[0006] A plurality of segmented push rods, wherein the second end of any one of the segmented push rods can be detachably connected to the first end of another segmented push rod, and any one of the segmented push rods can be inserted into the through hole through the opening;

[0007] A pushing mechanism is connected to the second end of the connector. The pushing mechanism is used to push the segmented push rod into the barrel of the extruder, thereby pushing out the screw inside the barrel.

[0008] Furthermore, the cross-section of the connector perpendicular to the first direction is annular, and the diameter of the annular cross-section where the first end is located is larger than the diameter of the annular cross-section where the second end is located.

[0009] Furthermore, the screw, the segmented push rod, and the pushing mechanism are coaxially arranged.

[0010] Furthermore, the connector and the quick-connect are connected by threads.

[0011] Furthermore, the end face of the first end of the connector has a quick-connect groove for connecting with the quick-connect member, and the quick-connect member can be embedded in the quick-connect groove.

[0012] Furthermore, the end of the pushing mechanism connected to the connecting member has a fixing part, and the fixing part is fixedly connected to the second end of the connecting member by bolts.

[0013] Furthermore, the actuating mechanism is a hydraulic cylinder.

[0014] Furthermore, the connector is characterized in that at least one opening is provided on its peripheral side, and the length of the opening is greater than the length of the segmented push rod.

[0015] Furthermore, the stroke length of the pushing mechanism is not less than the axial length of the connecting member.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) The screw ejection device described in this utility model can eject the screw from the barrel of the single screw extruder without discharging and cleaning the single screw extruder, thereby completely preserving the true form of the material in different segments, providing process engineers with more accurate material data and references, and helping engineers to make more effective process adjustments and optimizations;

[0018] (2) The use of segmented push rods makes the screw ejection device more flexible. The length of the push rod can be adjusted as needed. The tail end of the segmented push rod can be detached and connected to the front end of another segmented push rod, which can be used to meet the requirements of screw ejection of different lengths and types.

[0019] (3) The connector adopts the structure of a ring cone, which can be quickly connected to the quick-connect parts of the barrel. The connection method is through threaded connection, which can easily complete the installation and disassembly, saving installation time.

[0020] (4) This utility model uses a hydraulic cylinder as the pushing mechanism, which can provide a stable and adjustable thrust and controllable speed, and can effectively protect the screw from deformation during the pushing process. Attached Figure Description

[0021] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances. In the drawings:

[0022] Figure 1 This is a schematic diagram of the screw ejection device described in this utility model;

[0023] Figure 2 This is a schematic diagram illustrating the use of the screw ejection device and extruder described in this utility model;

[0024] Figure 3 This is a schematic diagram of the pushing mechanism described in this utility model;

[0025] Figure 4 This is a schematic diagram of the connector described in this utility model;

[0026] Figure 5 This is a schematic diagram of the end face of the first end of the connector described in this utility model;

[0027] Figure 6 This is a schematic diagram of the end face of the second end of the connector described in this utility model.

[0028] In the diagram: X, first direction; 1, extruder; 11, barrel; 12, screw; 13, quick connector; 2, connector; 21, first end; 22, second end; 23, opening; 24, quick connector groove; 3, segmented push rod; 4, pushing mechanism; 41, fixing part. Detailed Implementation

[0029] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0030] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0031] Please see Figure 1-6 The screw ejection device of this utility model is used to eject the screw 12 installed in the barrel 11 of the extruder 1 without discharging material from the extruder 1. The screw ejection device includes:

[0032] The connector 2 has a first end 21 and a second end 22 opposite to each other along the first direction X. The first end 21 of the connector 2 is used to be fixedly connected to the quick connector 13. The connector 2 is provided with a through hole that extends along the first direction X. The peripheral side of the connector 2 is provided with an opening 23 that can communicate with the through hole of the connector 2.

[0033] A plurality of segmented push rods 3, wherein the second end 22 of any one of the segmented push rods 3 can be detachably connected to the first end 21 of another segmented push rod 3, and any one of the segmented push rods 3 can be inserted into the through hole through the opening 23;

[0034] The pushing mechanism 4 is connected to the second end 22 of the connecting member 2. The pushing mechanism 4 is used to push the segmented push rod 3 into the barrel 11 of the extruder 1, thereby pushing out the screw 12 inside the barrel 11.

[0035] With the above structure, the first end 21 of the connector 2 is fixedly connected to the quick-connect 13 of the barrel 11, and a through hole is provided between the first end 21 and the second end 22 of the connector 2. The pushing mechanism 4 is connected to the second end 22 of the connector 2 and is used to push the segmented push rod 3 into the barrel 11. An opening 23 is provided on the side to provide a channel for the segmented push rod 3 to be inserted into the connector 2. After the segmented push rod 3 is aligned with the barrel 11, the pushing mechanism 4 provides power to push the segmented push rod 3 along the axial direction of the barrel 11, gradually pushing the screw 12 out of the barrel 11. The second end 22 of each segmented push rod 3 can be detachably connected to the first end 21 of another segmented push rod 3. Therefore, multiple segmented push rods 3 can be flexibly combined into different lengths to meet the needs of pushing out screws 12 of different specifications.

[0036] In this embodiment, the connector 2 is a frustum-shaped cone with a through hole. The cross-section of the connector 2 perpendicular to the first direction X is annular, and the diameter of the annular cross-section where the first end 21 of the connector 2 is located is larger than the diameter of the circular cross-section where the second end 22 is located. The conical structure can enhance the stability between the connector 2 and the barrel 11. Under high pressure or high load operation, the conical structure can effectively disperse pressure and reduce stress concentration between the connector 2 and the barrel 11, thereby extending the service life of the screw 12 ejection device.

[0037] In this embodiment, the screw 12, the segmented push rod 3, and the pushing mechanism 4 are arranged coaxially, making the overall structure more compact, reducing eccentricity errors in the transmission process, and improving the stability and accuracy of the motion. The above arrangement enables more efficient power transmission, reduces energy loss, and ensures the smoothness of the movement of the segmented push rod 3.

[0038] In this embodiment, the connector 2 and the quick-connect piece 13 of the barrel 11 are connected by a thread. This threaded connection ensures that the connector 2 and the barrel 11 will not loosen during use, providing strong stability and durability. Preferably, a quick-connect groove 24 is provided on the plane of the first end 21 of the connector 2, allowing the quick-connect piece 13 to be quickly inserted, thus achieving a quick-hook effect. The matching design of the quick-connect groove 24 and the quick-connect piece 13 ensures that the device can be quickly installed and disassembled during operation, while the threaded connection between the connector 2 and the quick-connect piece 13 prevents detachment due to weak connection.

[0039] In this embodiment, the end connecting the pushing mechanism 4 and the connecting member 2 has a fixing part 41. The fixing part 41 is fixedly connected to the second end 22 of the connecting member 2 by bolts, thereby ensuring a firm connection between the pushing mechanism 4 and the connecting member 2 and enhancing the stability and reliability of the connection. The bolt connection can provide a strong fixing force, ensuring that the pushing mechanism 4 will not loosen or shift during operation, and ensuring the stable operation of the screw 12 ejection device.

[0040] In this embodiment, the pushing mechanism 4 is a hydraulic cylinder, which provides a powerful and adjustable thrust to the screw 12 ejection device. The hydraulic cylinder provides efficient power output, pushing the segmented push rod 3 into the barrel 11, thereby ejecting the screw 12. The hydraulic cylinder provides efficient and stable thrust, ensuring that the screw 12 can be ejected from the barrel 11 smoothly and quickly, avoiding vibration and improving the stability and service life of the screw 12 ejection device.

[0041] In addition, the stroke length of the pushing mechanism 4 is not less than the axial length of the connecting piece 2, thereby ensuring that the pushing mechanism 4 can provide sufficient thrust range during the process of the screw 12 being pushed out, ensuring that the segmented push rod 3 can be pushed into the barrel 11, and ultimately ensuring that the screw 12 can be completely pushed out, avoiding insufficient thrust during the pushing process.

[0042] In this embodiment, the side of the connector 2 has at least one opening 23, and the length of the opening 23 is greater than the length of the segmented push rod 3, thereby ensuring that the segmented push rod 3 can be inserted into the connector 2, and then pushed into the machine barrel 11 by the pushing mechanism 4. The side of the connector 2 is provided with one or more openings 23, and the length of the opening 23 is greater than the length of the segmented push rod 3, thereby facilitating the insertion or removal of the segmented push rod 3.

[0043] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A screw ejection device, characterized in that, include: A connector having a first end and a second end opposite to each other along a first direction, the first end of the connector being used for fixed connection with a quick connector, the connector being provided with a through hole extending along the first direction, and the peripheral side of the connector being provided with an opening that can communicate with the through hole of the connector. A plurality of segmented push rods, wherein the second end of any one of the segmented push rods can be detachably connected to the first end of another segmented push rod, and any one of the segmented push rods can be inserted into the through hole through the opening; A pushing mechanism is connected to the second end of the connector. The pushing mechanism is used to push the segmented push rod into the barrel of the extruder, thereby pushing out the screw inside the barrel.

2. The screw ejection device according to claim 1, characterized in that, The cross-section of the connector perpendicular to the first direction is annular, and the diameter of the annular cross-section where the first end is located is larger than the diameter of the annular cross-section where the second end is located.

3. The screw ejection device according to claim 1, characterized in that, The screw, the segmented push rod, and the pushing mechanism are arranged coaxially.

4. The screw ejection device according to claim 1, characterized in that, The connector and the quick-connect are connected by a thread.

5. The screw ejection device according to claim 4, characterized in that, The end face of the first end of the connector has a quick-connect groove for connection with the quick-connect piece, and the quick-connect piece can be inserted into the quick-connect groove.

6. The screw ejection device according to claim 1, characterized in that, The end of the pushing mechanism connected to the connector has a fixing part, and the fixing part is fixedly connected to the second end of the connector by bolts.

7. The screw ejection device according to claim 1, characterized in that, The actuation mechanism is a hydraulic cylinder.

8. The screw ejection device according to claim 1, characterized in that, The connector has at least one opening on its peripheral side, and the length of the opening is greater than the length of the segmented push rod.

9. The screw ejection device according to claim 1, characterized in that, The stroke length of the pushing mechanism is not less than the axial length of the connecting member.

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