Granulation cutter assembly of modified regenerated ABS plastic particle granulator

Abstract

The utility model relates to a pelletizing cutter assembly of a modified regenerated ABS (Acrylonitrile Butadiene Styrene) plastic particle pelletizer, which comprises a cutter shaft and a cutter rest, and a plurality of blades are uniformly distributed on the front surface of the cutter rest along the circle center; the cutter shaft is connected to the back face of the cutter rest through a radial compensation assembly. The cutter shaft comprises an external thread arranged on the outer shaft face of the cutter shaft, an inner hole of the adjusting ring is provided with an internal thread, and the internal thread is matched with the external thread. The spring is arranged between the adjusting ring and the radial compensation assembly in a sleeved mode. The cutter rest makes radial compensation movement along the radial compensation assembly, the spring achieves resetting of the cutter rest, the radial compensation assembly is arranged between the cutter shaft and the cutter rest, during pelletizing, blades and a die head can advance and retreat together under the action of vibration force, the abrasion phenomenon caused by collision is reduced, and the service life of the blades is prolonged.

Description

Technical Field

[0001] This utility model relates to a pelletizing blade assembly for a modified recycled ABS plastic pelletizing machine. Background Technology

[0002] ABS resin is a ternary resin copolymerized from acrylonitrile, 1,3-butadiene, and styrene. It is one of the five major engineering plastics in industry [polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyethylene (PE), and ABS]. ABS has a wide range of applications in my country, including electronics, automotive parts, construction, and aerospace. With rising consumer spending and faster product upgrades, more and more waste ABS is being generated. Of this waste ABS resin, approximately 30% to 65% can be recovered through physical sorting. Therefore, recycling waste ABS resin has significant economic and environmental benefits.

[0003] ABS plastic is prone to aging and degradation under the influence of oxygen and ultraviolet light in the air, resulting in a decrease in molecular weight, increased brittleness, and a significant decline in mechanical properties. Direct recycling of waste ABS yields recycled ABS materials with poor performance, suitable only for low-grade products. To expand the application range of recycled ABS materials and improve the quality of recycled products, toughening and strengthening modifications are necessary.

[0004] When modifying ABS plastic, our company found that existing pelletizers could not meet the actual needs. Specifically, the pelletizing blade assembly of traditional pelletizers is a fixed structure (see...). Figure 7 The traditional pelletizer structure can also refer to the structure shown in the attached drawings of the invention patent application No. 2022108230453, in which the cutter shaft 1 is directly connected to the cutter holder 5 without elastic compensation. Due to the vibration of the machine tool, there is an intermittent impact between the blade 6 on the cutter holder 5 and the die head used for extruding plastic. The impact causes wear and premature scrapping of the blade 6. Utility Model Content

[0005] This utility model provides a pelletizing blade assembly for a modified recycled ABS plastic pelletizer, which solves the above-mentioned shortcomings. The specific solution is as follows:

[0006] A pelletizing blade assembly for a modified recycled ABS plastic pelletizer includes a blade shaft and a blade holder, wherein multiple blades are evenly distributed along the center of the front of the blade holder;

[0007] The cutter shaft is connected to the back of the tool holder via a radial compensation assembly;

[0008] The cutter shaft includes an external thread on its outer shaft surface, and the inner hole of the adjusting ring is provided with an internal thread, which mates with the external thread.

[0009] The spring is sleeved between the adjusting ring and the radial compensation assembly;

[0010] The tool holder performs radial compensation movement along the radial compensation assembly, and the spring realizes the reset of the tool holder.

[0011] Furthermore, the radial compensation component includes a tool holder;

[0012] The spring is positioned at the back of the tool holder, and the tool post is mounted at the front of the tool holder;

[0013] The tool holder has a cylindrical structure;

[0014] A through hole extending axially is provided at the axis of the tool holder, and a ball head is provided at the end of the tool shaft, the ball head being in contact with the inner wall of the through hole;

[0015] The ball head is provided with a pin hole perpendicular to the axial direction, and the pin shaft is installed in the pin hole with both ends of the pin shaft protruding from the pin hole respectively;

[0016] The tool holder is also provided with a radially elongated hole extending along the axial direction, and the protrusions of the pins are guided and slid within the radially elongated hole.

[0017] Furthermore, the outer side of the tool holder is also provided with a jacket, and the rear end face of the jacket is connected to the flange provided on the tool holder.

[0018] The beneficial effects are:

[0019] A radial compensation component is installed between the cutter shaft and the cutter holder. During pellet cutting, the blade and the die head can move forward and backward together under the action of vibration, reducing wear caused by collision and extending the blade life.

[0020] It also features a clamping force adjustment mechanism to adjust the clamping force between the blade and the die head, adapting to plastic particles of different properties. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the cutter shaft structure of this utility model;

[0023] Figure 3 This is an exploded view of the present invention;

[0024] Figure 4 This is a first sectional view of the present invention;

[0025] Figure 5 This is a second sectional view of the present invention;

[0026] Figure 6 This is a connection diagram of the tool holder and tool shaft of this utility model;

[0027] Figure 7 This is the existing structure diagram;

[0028] in:

[0029] 1-Cutter shaft;

[0030] 2-Adjusting ring;

[0031] 3-Spring;

[0032] 4-Radial compensation component;

[0033] 5- Tool holder;

[0034] 6-blade;

[0035] 1a - External thread, 1b - Ball head, 1ba - Pin hole;

[0036] 2a - Internal thread;

[0037] 41-Tool holder, 42-Pin, 43-Outer sleeve, 41a-Radial elongated hole. Detailed Implementation

[0038] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0039] Please see Figures 1 to 3 A pelletizing blade assembly for a modified recycled ABS plastic pelletizer includes a blade shaft 1 and a blade holder 5, wherein three blades 6 are evenly distributed along the center of the front edge of the blade holder 5.

[0040] The cutter shaft 1 is connected to the back of the cutter holder 5 via a radial compensation assembly 4;

[0041] The cutter shaft 1 includes an external thread 1a on its outer shaft surface, and the inner hole of the adjusting ring 2 is provided with an internal thread 2a, which is engaged with the external thread 1a.

[0042] Spring 3 is sleeved between the adjusting ring 2 and the radial compensation component 4;

[0043] The tool holder 5 performs radial compensation movement along the radial compensation component 4, and the spring 3 realizes the reset of the tool holder 5. The radial compensation component 4 is provided between the tool shaft 1 and the tool holder 5.

[0044] In this application, a radial compensation component 4 is provided between the cutter shaft 1 and the cutter holder 5. During pelletizing, the blade 6 and the die head can move forward and backward together under the action of vibration, reducing wear caused by collision and extending the blade life. At the same time, by rotating the adjusting ring 2, the compression degree of the spring 3 can be adjusted to adjust the adhesion between the blade 6 and the die head, adapting to plastic particles of different properties.

[0045] For details, please refer to Figures 4 to 6 This is one embodiment of the radial compensation component 4, which includes a tool holder 41;

[0046] The spring 3 is positioned at the back of the tool holder 41, and the tool post 5 is mounted in front of the tool holder 5.

[0047] The tool holder 41 has a cylindrical structure, and a through hole extending axially is provided at the axis of the tool holder 41. The end of the tool shaft 1 is provided with a ball head 1b, which fits against the inner wall of the through hole. Figure 5 As shown;

[0048] The ball head 1b is provided with a pin hole 1ba perpendicular to the axial direction, and the pin shaft 42 is installed in the pin hole 1ba with both ends of the pin shaft 42 protruding from the pin hole 1ba respectively.

[0049] The tool holder 41 is also provided with a radially elongated hole 41a extending along the axial direction, and the protrusion of the pin 42 is guided and slid within the radially elongated hole 41a.

[0050] In this application, under the action of vibration, since the tool holder 41 is connected to the tool post 5, and the tool holder 41 can move axially on the tool shaft 1, it is guided back and forth in the radial elongated hole 41a by the pin 42 to achieve axial guidance, and the tool holder 41 is reset under the action of the spring 3 to achieve the overall action.

[0051] In some embodiments, the outer periphery of the two proximal ends of the tool holder 41 and the adjusting ring 2 are provided with limiting rings, and the two ends of the spring 3 abut against the limiting rings of the tool holder 41 and the adjusting ring 2, respectively.

[0052] In this application, a limiting ring is provided to support and limit the spring 3.

[0053] In some embodiments, please refer to Figure 1 and Figure 3 To protect the tool holder 41 and the pin 42, the outer side of the tool holder 41 is also provided with a sleeve 43, and the rear end face of the sleeve 43 is connected to the flange provided on the tool holder 41. The connection method can be to use threaded fasteners (not shown in the figure).

[0054] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pelletizing blade assembly for a modified recycled ABS plastic pelletizer, characterized in that, It includes a cutter shaft and a cutter holder, and multiple blades are evenly distributed along the front edge of the cutter holder; The cutter shaft is connected to the back of the tool holder via a radial compensation assembly; The cutter shaft includes an external thread on its outer shaft surface, and the inner hole of the adjusting ring is provided with an internal thread, which mates with the external thread. The spring is sleeved between the adjusting ring and the radial compensation assembly; The tool holder performs radial compensation movement along the radial compensation assembly, and the spring realizes the reset of the tool holder.

2. The pelletizing blade assembly of a modified recycled ABS plastic pelletizer according to claim 1, characterized in that, The radial compensation component includes a tool holder; The spring is positioned at the back of the tool holder, and the tool post is mounted at the front of the tool holder; The tool holder has a cylindrical structure; A through hole extending axially is provided at the axis of the tool holder, and a ball head is provided at the end of the tool shaft, the ball head being in contact with the inner wall of the through hole; The ball head is provided with a pin hole perpendicular to the axial direction, and the pin shaft is installed in the pin hole with both ends of the pin shaft protruding from the pin hole respectively; The tool holder is also provided with a radially elongated hole extending along the axial direction, and the protrusions of the pins are guided and slid within the radially elongated hole.

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