A shredding rotor assembly for a plastic shredder

Abstract

The utility model relates to a kind of pulverization rotor assemblies for plastic pulverizer, including rotating roller and blade, the outer periphery of rotating roller is uniformly distributed with multiple mounting seats, mounting seat is fixed in the clamping groove of rotating roller, and the blade holder is detachably fixed on the mounting seat, the outer end of blade holder is provided with insertion slot, and the blade is detachably fixed in insertion slot. The utility model uses detachable blade holder, and the entire blade holder can be selected to be disassembled for maintenance during later maintenance. And since the detachable blade is convenient to disassemble, the replacement of worn blade is facilitated, and the utility is more convenient and flexible.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, specifically to a crushing rotor assembly for a plastic crusher. Background Technology

[0002] A plastic crusher is used to crush various plastics and rubbers, such as plastic profiles, pipes, rods, filaments, films, and waste rubber products. The resulting granules can be directly used for extrusion as raw materials. The choice of plastic crusher depends on the material being crushed; different raw materials require different crushers. Therefore, various models are available on the market, including twin-shaft plastic crushers, film plastic crushers, PVC plastic crushers, and PP plastic crushers.

[0003] The crushing mechanism of a crusher mainly consists of a housing, a crushing rotor rotatably installed inside the housing, and a drive mechanism that drives the crushing rotor to rotate. The crushing rotor is composed of a rotating roller and multiple sets of blades evenly distributed around the outer circumference of the rotating roller. The drive mechanism drives the rotating roller to rotate, which in turn causes the outer blades to rotate and crush the plastic into granules.

[0004] The existing crushing rotor has very inconvenient parts for disassembly and maintenance between the roller and the blade; moreover, the shafts at both ends of the roller are usually an integral structure, which can only be repaired by cutting the shaft, making disassembly and assembly inconvenient. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a crushing rotor assembly for a plastic crusher. It solves the problem of inconvenient disassembly of the rotating shaft and blades in existing crushing rotors.

[0006] This utility model is achieved through the following technical solution: a crushing rotor assembly for a plastic crusher, including a rotating roller and blades. Multiple mounting seats are evenly distributed on the outer circumference of the rotating roller. The mounting seats are fixed in the slots of the rotating roller. A blade holder is detachably fixed to the mounting seat. A slot is opened at the outer end of the blade holder, and the blade is detachably fixed in the slot.

[0007] This solution uses a detachable tool holder, allowing for easy disassembly and maintenance depending on the repair requirements. Furthermore, the detachable inserts facilitate easy removal and replacement of worn inserts, making the system more convenient and flexible to use.

[0008] Preferably, the tool holder and the mounting base are fixed together by bolts. In this optimized solution, the tool holder and the mounting base are detachably connected by bolts.

[0009] Preferably, the blade is inserted into the slot and abuts against one side wall of the slot. An inclined insert is inserted between the blade and the other side wall of the slot. The inclined insert has a first end face and a second end face that abut against the side wall of the slot and the blade, respectively. The included angle between the first end face and the second end face is an acute angle. A threaded hole is opened at the inner end of the inclined insert. The mounting base and the blade holder have bolt holes opposite to the threaded hole. A fastening bolt passes through the bolt hole and is screwed into the threaded hole.

[0010] This optimized solution features an acute angle between the first and second end faces of the inclined insert block, creating a slanted surface. This allows the blade to be pressed against the side wall of the slot as the gap gradually decreases when the inclined slot is inserted from the outside in. The blade is then secured by fastening bolts, making disassembly and assembly more convenient.

[0011] Preferably, the depth of the slot is greater than the length of the first end face. This optimized solution ensures that the angled insert has sufficient insertion depth, thereby ensuring that the angled insert can press the blade firmly.

[0012] Preferably, the sum of the depths of the bolt hole and the threaded hole is not less than the length of the fastening bolt. This optimized solution ensures that the fastening bolt can tighten the inclined insert.

[0013] Preferably, the mounting base and the blade holder have limiting holes opposite to the blade, and a guide rod is fixedly connected to the inner end of the blade, passing through the limiting hole. In this optimized solution, the blade is fixed in the limiting hole by the guide rod, thereby ensuring the stability of the blade.

[0014] Preferably, the rotating roller includes a coaxially arranged central shaft, a support sleeve, two circular side plates, and multiple circular web plates. The central shaft passes through the support sleeve, the two circular side plates are fixed to the axial ends of the support sleeve, and the multiple circular web plates are located between the two circular side plates and evenly distributed along the axial direction of the support sleeve. The circular web plates are fixed to the support sleeve, and multiple grooves are formed on the outer periphery of the circular web plates. The multiple grooves on the multiple circular web plates, coaxial along the axial direction, form the retaining groove. This optimized solution uses two circular side plates and multiple circular web plates to form the outer peripheral structure of the rotating roller, optimizing the roller structure, reducing weight, and saving costs.

[0015] Preferably, multiple mounting seats are fixed axially within each slot. This optimized solution allows for convenient combination of different cutting tool quantities using multiple mounting seats.

[0016] Preferably, the central shaft and the support sleeve are detachably fixed together. This optimized design facilitates the disassembly and maintenance of the central shaft.

[0017] Preferably, the support sleeve is fixedly connected to both ends with first flanges, and the two first flanges are bolted to a second flange, which is then fixedly connected to the central shaft. In this optimized design, the central shaft and support sleeve are fixedly connected by flanges, making assembly and disassembly more convenient, eliminating the need for shaft cutting, and saving costs.

[0018] The beneficial effects of this utility model are as follows: It adopts a detachable tool holder, allowing for easy disassembly and maintenance depending on the repair status. Furthermore, the detachable blades facilitate easy removal and replacement of worn blades, making it more convenient and flexible to use.

[0019] The central shaft and support sleeve are fixedly connected by a flange, making disassembly and assembly more convenient. This facilitates the disassembly and maintenance of the central shaft without the need to cut the shaft body, thus saving costs. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the rotating roller;

[0023] Figure 4 Side view showing the distribution of multiple mounting brackets;

[0024] Figure 5 This is a diagram of the card slot;

[0025] Figure 6 This is a side view of the circular web.

[0026] Figure 7 A schematic diagram showing the connection between the central shaft and the support sleeve;

[0027] Figure 8 Schematic diagram of the mounting base, tool holder, and blade structure;

[0028] Figure 9 A 3D schematic diagram showing the installation of the blade and angled insert;

[0029] Figure 10 Sectional view of the blade and beveled insert;

[0030] As shown in the figure:

[0031] 1. Rotary roller, 2. Mounting base, 3. Tool holder, 31. Slot, 4. Blade, 5. Angled insert block, 51. First end face, 52. Second end face, 6. Threaded hole, 7. Bolt hole, 8. Fastening bolt, 9. Limiting hole, 10. Guide rod, 11. Central shaft, 12. Support sleeve, 13. Circular side plate, 14. Circular web plate, 15. Groove, 16. Slot, 17. First flange, 18. Second flange, 19. Baffle, 20. Sink. Detailed Implementation

[0032] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0033] like Figures 1-10 As shown, a crushing rotor assembly for a plastic crusher includes a rotating roller 1 and blades 4. Multiple mounting seats 2 are evenly distributed on the outer periphery of the rotating roller 1. The mounting seats 2 are fixed in the slots 16 of the rotating roller 1. A blade holder 3 is detachably fixed to the mounting seat 2. A slot 31 is opened at the outer end of the blade holder 3, and the blades 4 are detachably fixed in the slot 31.

[0034] By making the tool holder 3 detachable, the entire tool holder can be disassembled for maintenance. Furthermore, since the blade 4 is also detachable, it facilitates the replacement of worn blades, making the tool more convenient and flexible to use.

[0035] like Figure 3 As shown, specifically, the rotating roller 1 includes a coaxially arranged central shaft 11, a support sleeve 12, two circular side plates 13, and multiple circular web plates 14. The central shaft 11 is inserted and fixed inside the support sleeve 12, and the length of the central shaft 11 is greater than the length of the support sleeve 12. The two circular side plates 13 are fixed to both ends of the support sleeve 12 in the axial direction, and the multiple circular web plates 14 are located between the two circular side plates 13 and are evenly distributed along the axial direction of the support sleeve 12. The circular web plates 14 are fixed to the support sleeve 12.

[0036] like Figures 4-6 As shown, the outer periphery of the circular web plate 14 has multiple grooves 15, the shape of which matches the outer periphery of the mounting base. In this embodiment, the mounting base is an L-shaped plate, and the grooves are rectangular slots that can accommodate the L-shaped plate, allowing the mounting base to be snapped into the grooves. The multiple grooves 15 arranged coaxially along the axial direction of the multiple circular web plates 14 form the slots 16, and multiple mounting bases 2 are fixedly installed in each slot 16 along the axial direction. In this embodiment, the support sleeve 12 has 5 circular web plates 14 arranged axially, and 6 grooves 15 are evenly distributed on the outer periphery of each circular web plate 14. The 5 grooves 15 arranged coaxially along the axial direction form a slot 16. 2 mounting bases 2 are fixedly installed in each slot 16. The outer periphery structure of the roller 1 is formed by two circular side plates 13 and multiple circular web plates 14, optimizing the roller structure, reducing weight, and saving costs.

[0037] like Figure 6 As shown, in this embodiment, a baffle 19 is also engaged in the slot 16, and the baffle 19 abuts against the outer end of the mounting base 2. Specifically, a recess 20 is provided on the groove 15 for the baffle 19 to be inserted into, and the baffle 19 is inserted into the recess 20 and perpendicular to the front end of the mounting base 2. During installation, the mounting base 2 is first inserted into the slot 16, then the baffle 19 is engaged in the recess, and finally the baffle 19 is welded to the mounting base 2 for fixation. The mounting base 2 is fixed in the slot 16 by the blocking and limiting effect of the baffle 19. Preferably, the mounting base 2 can also be welded to the circular web plate 14 for fixation, thereby improving the fixing effect.

[0038] like Figure 7 As shown, the central shaft 11 is detachably fixed to the support sleeve 12. Specifically, the support sleeve 12 has first flanges 17 fixed to both ends, and two first flanges 17 are bolted to second flanges 18, which are fixed to the central shaft 11. During installation, the first flanges 17 are first welded to the support sleeve 12, then the second flanges 18 are bolted to the first flanges 17, and finally the two second flanges 18 are welded to the central shaft 11. This design allows for easy disassembly; only one second flange 18 needs to be cut and separated from the central shaft 11, and the bolts on the other second flange 18 need to be removed to allow the entire central shaft 11 to be taken out for grinding and repair. Compared to the existing one-piece shaft of the rotating roller, only the second flange needs to be replaced, eliminating the need to cut the shaft itself, making it more convenient and cost-effective.

[0039] like Figure 10 As shown, the tool holder 3 and the mounting base 2 are fixedly connected by bolts. The tool holder and the mounting base are detachably connected by bolts.

[0040] like Figures 8-10 As shown, specifically, the blade 4 is inserted into the slot 31, and the blade 4 abuts against one side wall of the slot 31. A beveled block 5 is inserted between the blade 4 and the other side wall of the slot 31. The beveled block 5 has a first end face 51 and a second end face 52 that abut against the side wall of the slot 31 and the blade 4, respectively. The included angle between the first end face 51 and the second end face 52 is an acute angle. A threaded hole 6 is opened at the inner end of the beveled block 5. The mounting base 2 and the blade holder 3 have bolt holes 7 opposite to the threaded hole 6. A fastening bolt 8 passes through the bolt hole 7 and is screwed into the threaded hole 6. In this embodiment, the included angle between the two side walls of the slot 31 that abut against the blade 4 and the beveled block 5 is also an acute angle, and the included angle of the two side walls of the slot 31 is the same as the included angle of the first end face 51 and the second end face 52. Since the two included angles are the same, the first end face 51 of the beveled block 5 can be completely fitted with the side wall of the slot 31, which facilitates the sliding of the beveled surface of the beveled block 5 along the beveled surface of the slot 31.

[0041] The inner diameter of the slot 31 gradually decreases from the outside to the inside. The angle between the first and second end faces of the inclined insert 5 is an acute angle, giving the inclined insert a beveled surface. When the inclined slot 5 is inserted from the outside to the inside, the gradually decreasing spacing presses the blade 4 against the side wall of the slot 31. The blade 4 is pressed against the inclined insert 5 by the inclined insert 5. The inclined insert 5 is then fixed by the fastening bolt 8, thus fixing the blade 4. For disassembly, simply loosen the fastening bolt and the inclined insert 8 to remove the blade, making disassembly and assembly more convenient.

[0042] The depth of the slot 31 is greater than the length of the first end face 51. By setting the depth of the slot 31, the angled insert 5 is ensured to have sufficient insertion depth, thereby ensuring that the angled insert 5 can press the blade 4 tightly.

[0043] The sum of the depths of the bolt hole 7 and the threaded hole 6 is not less than the length of the fastening bolt 8. By setting the length of the fastening bolt 8, it is ensured that the fastening bolt 8 can tighten the inclined insert 5.

[0044] The mounting base 2 and the blade holder 3 are provided with limiting holes 9 opposite to the blade 4. A guide rod 10 is fixed to the inner end of the blade 4 and is inserted into the limiting hole 9. The blade 4 is guided within the limiting hole 9 by the guide rod 10, thereby ensuring the stability of the blade.

[0045] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A crushing rotor assembly for a plastic crusher, comprising a rotating roller (1) and blades (4), characterized in that: The outer periphery of the rotating roller (1) is evenly distributed with multiple mounting seats (2). The mounting seats (2) are fixed in the slot (16) of the rotating roller. A knife holder (3) is detachably fixed on the mounting seat (2). A slot (31) is opened at the outer end of the knife holder (3). The blade (4) is detachably fixed in the slot (31).

2. The crushing rotor assembly for a plastic crusher according to claim 1, characterized in that: The tool holder (3) is fixed to the mounting base (2) by bolts.

3. The crushing rotor assembly for a plastic crusher according to claim 1, characterized in that: The blade (4) is inserted into the slot (31) and abuts against one side wall of the slot (31). An inclined block (5) is inserted between the blade (4) and the other side wall of the slot (31). The inclined block (5) has a first end face (51) and a second end face (52) that abut against the side wall of the slot (31) and the blade (4) respectively. The included angle between the first end face and the second end face is an acute angle. The inner end of the inclined block (5) is provided with a threaded hole (6). The mounting base (2) and the blade holder (3) are provided with bolt holes (7) opposite to the threaded hole (6). A fastening bolt (8) is inserted into the bolt hole and screwed into the threaded hole (6).

4. The crushing rotor assembly for a plastic crusher according to claim 3, characterized in that: The depth of the slot (31) is greater than the length of the first end face (51).

5. The crushing rotor assembly for a plastic crusher according to claim 3, characterized in that: The sum of the depths of the bolt hole (7) and the threaded hole (6) is not less than the length of the fastening bolt (8).

6. The crushing rotor assembly for a plastic crusher according to claim 3, characterized in that: The mounting base (2) and the blade holder (3) are provided with limiting holes (9) opposite to the blade (4). The inner end of the blade (4) is fixed with a guide rod (10), which is inserted into the limiting hole (9).

7. The crushing rotor assembly for a plastic crusher according to claim 1, characterized in that: The rotating roller (1) includes a central shaft (11) coaxially arranged, a support sleeve (12), two circular side plates (13) and multiple circular web plates (14). The central shaft (11) is fixed inside the support sleeve (12). The two circular side plates (13) are fixed to the two ends of the support sleeve (12) in the axial direction. The multiple circular web plates (14) are located between the two circular side plates (13) and are evenly distributed along the axial direction of the support sleeve (12). The circular web plates (14) are fixed to the support sleeve (12). Multiple grooves (15) are opened on the outer periphery of the circular web plates (14). The multiple grooves (15) of the multiple circular web plates (14) arranged coaxially in the axial direction form the slot (16).

8. The crushing rotor assembly for a plastic crusher according to claim 7, characterized in that: Multiple mounting seats (2) are fixed along the axial direction in each slot (16).

9. The crushing rotor assembly for a plastic crusher according to claim 7, characterized in that: The central shaft (11) is detachably fixed to the support sleeve (12).

10. The crushing rotor assembly for a plastic crusher according to claim 9, characterized in that: The support sleeve (12) is fixedly connected to two ends with first flanges (17), and the two first flanges (17) are respectively connected to second flanges (18) by bolts. The second flanges are fixedly connected to the central shaft (11).

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