Feeding device of plastic extruder

Abstract

The utility model discloses a feeding device of a plastic extruder, which belongs to the field of plastic extruders and comprises a feeding cylinder, a sliding rotating column, a blanking groove, a mounting frame, a transverse moving adjusting device, a polygonal rod and a power motor. During work, the power motor drives the polygonal rod to rotate, the polygonal rod rotates to drive the sliding rotating column to rotate, the sliding rotating column rotates to drive the discharging groove in the sliding rotating column to rotate, then the discharging groove rotates, raw materials fall into the discharging groove and then rotate to the lower portion to be discharged, and then quantitative feeding is achieved. When the feeding amount needs to be adjusted, the position of the sliding rotating column is adjusted through the transverse moving adjusting device, then the discharging grooves of different sizes are moved to the position below the feeding cylinder, the amount of raw materials carried by the discharging grooves of different sizes is different, and the feeding speed is changed under the condition that the rotating speed of the power motor is not changed.

Description

Technical Field

[0001] This utility model relates to the field of plastic extruders, and in particular to a feeding device for a plastic extruder. Background Technology

[0002] With the development of the plastics industry, the market share of plastic products such as films, pipes, cables, and profiles has gradually expanded, becoming ubiquitous and widely recognized products. However, some problems have also emerged in plastic extrusion factories. On the one hand, there are limited varieties of raw materials, unstable quality, large price fluctuations, and a lack of specialized materials. On the other hand, poor production equipment leads to unreasonable product structure and production scale, ultimately resulting in unreliable product quality. The most critical step affecting product quality is the extrusion molding process, and the plastic granules used in extruders are essentially subject to strict control over the feeding of these granules. Proper control results in higher quality extruded products.

[0003] In the prior art, patent publication number CN213618228U discloses a feeding device for a plastic extruder, including a feeding cylinder and a U-shaped fixed frame. The feeding cylinder is located inside the fixed frame, and four support legs are equally spaced on one side of the fixed frame. A partition is fixed inside the feeding cylinder, and a flow-limiting cylinder is provided at one end of the feeding cylinder. The flow-limiting cylinder is connected and fixed to the feeding cylinder by a first bolt. A rotating shaft is provided inside the flow-limiting cylinder, and both ends of the rotating shaft are rotatably connected to the inside of the flow-limiting cylinder through bearings. The main function of this invention is to add plastic granules from the top of the feeding cylinder into the inside of the feeding cylinder. A drive motor drives the rotating shaft to rotate, and the plastic granules enter between two adjacent baffles. The rotation of the rotating shaft restricts the flow of plastic granules, and the continuous rotation of the drive motor prevents plastic granules from clogging the discharge port of the flow-limiting cylinder to a certain extent.

[0004] The above technical solution achieves quantitative feeding, but it is not convenient to switch the feeding speed when the motor speed is constant. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned in the background art by designing a feeding device for a plastic extruder.

[0006] To achieve the above objectives, the technical solution of this utility model is a feeding device for a plastic extruder, comprising a feeding cylinder, a sliding rotating column, a discharge trough, a mounting frame, a transverse adjustment device, a polygonal rod, and a power motor. The sliding rotating column is slidably and rotatably inserted into the lower part of the feeding cylinder. Multiple discharge troughs of different sizes are transversely opened on the sliding rotating column. The mounting frame is installed on the feeding cylinder, and the transverse adjustment device is installed on the mounting frame. The transverse adjustment device and the sliding rotating column are rotatably connected. A polygonal rod is slidably inserted into the sliding rotating column, and a power motor is installed on the polygonal rod. The power motor is fixedly installed on the mounting frame.

[0007] Furthermore, the lateral adjustment device includes a sliding box, an adjusting screw, and a limiting ring. The sliding box is slidably mounted on the mounting frame, and the adjusting screw is engaged and passed through the sliding box. The adjusting screw is rotatably mounted on the mounting frame, and the limiting ring is rotatably mounted inside the sliding box. The limiting ring is fixedly mounted on the sliding rotating column.

[0008] Furthermore, the spacing between the feeding troughs is greater than the width of the lower outlet of the feeding cylinder.

[0009] Furthermore, a sleeve is installed at the lower part of the feeding cylinder, and the position of the sleeve corresponds to the position of the sliding rotating column.

[0010] Furthermore, the polygonal rod is a rod-shaped structure with a polygonal cross-section.

[0011] Beneficial effects:

[0012] This utility model provides a feeding device for a plastic extruder, which has the following beneficial effects. Through its structural design, the device feeds material through a feeding cylinder. During operation, a power motor drives a polygonal rod to rotate, which in turn drives a sliding rotating column to rotate. The rotating column then drives the feeding trough on it to rotate, causing the raw material to fall into the trough and rotate downwards for discharge, thus achieving quantitative feeding. When the feeding amount needs to be adjusted, the position of the sliding rotating column is adjusted by a horizontal adjustment device, allowing different sized feeding troughs to move below the feeding cylinder. This results in different amounts of raw material carried by different sized feeding troughs, achieving a change in feeding speed while keeping the power motor's rotation speed constant, thereby solving the problems existing in the prior art. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the feeding device of the plastic extruder described in this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the sliding rotating column of the feeding device of the plastic extruder described in this utility model.

[0015] In the diagram, 1 is the feeding cylinder; 2 is the sliding rotating column; 3 is the feeding trough; 4 is the mounting bracket; 5 is the polygonal rod; 6 is the power motor; 7 is the sliding box; 8 is the adjusting screw; 9 is the limit ring; and 10 is the sleeve. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be noted that the terms "upper / lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," 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" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "set / set up," "sleeve," "connection," 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.

[0019] Please see Figure 1-2 This utility model provides a technical solution: a feeding device for a plastic extruder, including a feeding cylinder 1, a sliding rotating column 2, a discharge trough 3, a mounting frame 4, a transverse adjustment device, a polygonal rod 5, and a power motor 6. The lower part of the feeding cylinder 1 has a sliding and rotatable sliding rotating column 2 inserted into it. Multiple discharge troughs 3 of different sizes are opened laterally on the sliding rotating column 2. The mounting frame 4 is installed on the feeding cylinder 1, and the transverse adjustment device is installed on the mounting frame 4. The transverse adjustment device and the sliding rotating column 2 are rotatably connected. The polygonal rod 5 is slidably inserted into the sliding rotating column 2, and the power motor 6 is installed on the polygonal rod 5. The power motor 6 is fixedly installed on the mounting frame 4.

[0020] In this utility model, the horizontal adjustment device includes a sliding box 7, an adjusting screw 8, and a limiting ring 9. The sliding box 7 is slidably mounted on the mounting frame 4. The adjusting screw 8 is engaged and passed through the sliding box 7. The adjusting screw 8 is rotatably mounted on the mounting frame 4. The limiting ring 9 is rotatably mounted inside the sliding box 7. The limiting ring 9 is fixedly mounted on the sliding rotating column 2. By turning the adjusting screw 8, the sliding box 7 is rotated, which in turn drives the limiting ring 9 to move, thereby realizing the position adjustment of the sliding rotating column 2.

[0021] In this invention, the spacing between the feeding troughs 3 is greater than the width of the lower outlet of the feeding cylinder 1, so that two adjacent feeding troughs 3 will not both fall into the lower part of the feeding cylinder 1.

[0022] In this utility model, a sleeve 10 is installed at the lower part of the feeding cylinder 1. The position of the sleeve 10 corresponds to the position of the sliding rotating column 2, thereby preventing the material discharge groove 3 on the extended sliding rotating column 2 from leaking outward through the sleeve 10.

[0023] In this invention, the polygonal rod 5 is a rod-shaped structure with a polygonal cross-section, which can drive the sliding rotating column 2 to rotate.

[0024] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0025] In this implementation plan:

[0026] During operation, material is added through the feeding cylinder 1. The power motor 6 drives the polygonal rod 5 to rotate, which in turn drives the sliding rotating column 2 to rotate. The rotation of the sliding rotating column 2 drives the feeding trough 3 on it to rotate, causing the raw material to fall into the feeding trough 3 and then rotate downwards to be discharged, thus achieving quantitative feeding. When it is necessary to adjust the feeding amount, the position of the sliding rotating column 2 is adjusted by the horizontal adjustment device, which moves the feeding troughs 3 of different sizes below the feeding cylinder 1. Thus, the feeding speed is changed while the rotation speed of the power motor 6 remains constant.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding device for a plastic extruder, comprising a feeding cylinder (1), a sliding rotating column (2), a feeding trough (3), a mounting frame (4), a transverse adjustment device, a polygonal rod (5), and a power motor (6), characterized in that, The lower part of the feeding cylinder (1) has a sliding rotating column (2) that can slide and rotate. The sliding rotating column (2) has multiple feeding slots (3) of different sizes opened horizontally. The feeding cylinder (1) is equipped with a mounting frame (4). The mounting frame (4) is equipped with a horizontal adjustment device. The horizontal adjustment device and the sliding rotating column (2) are rotatably connected. A polygonal rod (5) is slidably inserted in the sliding rotating column (2). A power motor (6) is installed on the polygonal rod (5). The power motor (6) is fixedly installed on the mounting frame (4).

2. The feeding device for the plastic extruder according to claim 1, characterized in that, The lateral adjustment device includes a sliding box (7), an adjusting screw (8), and a limiting ring (9). The sliding box (7) is slidably mounted on the mounting frame (4). The adjusting screw (8) is engaged and penetrated on the sliding box (7). The adjusting screw (8) is rotatably mounted on the mounting frame (4). The limiting ring (9) is rotatably mounted inside the sliding box (7). The limiting ring (9) is fixedly mounted on the sliding rotating column (2).

3. The feeding device for the plastic extruder according to claim 1, characterized in that, The spacing of the feeding troughs (3) is greater than the width of the lower outlet of the feeding cylinder (1).

4. The feeding device for a plastic extruder according to claim 1, characterized in that, A sleeve (10) is installed at the lower part of the feeding cylinder (1), and the position of the sleeve (10) corresponds to the position of the sliding rotating column (2).

5. The feeding device for a plastic extruder according to claim 1, characterized in that, The polygonal rod (5) is a rod-shaped structure with a polygonal cross-section.

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