Granulator

Abstract

The utility model discloses a granulator which comprises a machine frame, two supporting rings are arranged on the machine frame, the two supporting rings are symmetrically arranged on the machine frame, and a cutter shaft is installed on the two supporting rings. A cutting roller is fixed to the cutter shaft, and a plurality of cutters are distributed on the cutting roller in the circumferential direction. A plurality of T-shaped grooves are evenly formed in the outer wall of the cutting roller, the two ends of each T-shaped groove are open, a T-shaped block is fixed to the cutting knife, and the T-shaped blocks are movably installed in the T-shaped grooves. According to the utility model, a matching mechanism of the T-shaped groove and the T-shaped block is adopted, so that the cutting knife can easily slide in or out of the cutting roller, the disassembly and assembly process is greatly simplified, and the maintenance cost and time are reduced. Meanwhile, the design of openings in the two ends of the T-shaped groove is matched with the use of the first end cover and the second end cover, so that the stability of the cutting knife after assembly is ensured, and loosening or falling in the operation process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cutting machine belongs to plastic cutting technical field. BACKGROUND

[0002] In the existing cutting machine technology, cutting knife and cutting roller usually adopt integral design, that is, cutting knife is directly fixed and welded or fastened on cutting roller, forming an indivisible whole. Although this design guarantees the continuity and stability of cutting operation to a certain extent, once the cutting knife appears wear, damage or needs to be replaced in the use process, the whole cutting roller needs to be disassembled from the rack to carry out the replacement or maintenance of the cutting knife. This process is not only complex and tedious, needs to consume a lot of time and manpower, and frequent overall disassembly can also cause unnecessary damage to the cutting roller and the rack, increase the maintenance cost and downtime. SUMMARY

[0003] The utility model aims at providing a cutting machine to solve the problems in the above background technology.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a cutting machine, comprising a rack, the rack is provided with:

[0005] Two supporting rings, two supporting rings are symmetrically arranged on the rack, and two supporting rings are concentrically arranged.

[0006] A knife shaft is installed on the two supporting rings.

[0007] A cutting roller is coaxially fixed on the knife shaft, and a plurality of cutting knives are distributed on the cutting roller in the circumferential direction.

[0008] Wherein, a plurality of T-shaped grooves are uniformly arranged on the outer wall of the cutting roller, the length direction of each T-shaped groove is parallel to the axis of the cutting roller, the two ends of the T-shaped groove are open, a T-shaped block is fixed on the cutting knife, and the T-shaped block is movably installed in the T-shaped groove.

[0009] Preferably, one end of the cutting roller is fixed with a first end cover for sealing one end of the T-shaped groove.

[0010] The other end of the cutting roller is fixed with a second end cover, a plurality of first through grooves are arranged on the side wall of the second end cover, and the plurality of first through grooves are arranged in one-to-one alignment with the end portions of the plurality of T-shaped grooves.

[0011] The one end of the cutter shaft close to the second end cover is sleeved with a sliding cover, a rotating ring is rotatably connected to the sliding cover, a plurality of second through grooves are formed in the side wall of the rotating ring, the second through grooves correspond to the first through grooves one by one, and a plugging block for being inserted into the first through grooves and for sealing the opening of the T-shaped groove is arranged between adjacent two second through grooves.

[0012] Preferably, a sliding groove is formed in the side wall of the cutter shaft, a driving frame is slidably connected to the inside of the sliding groove, the driving frame is fixedly connected to the side wall of the sliding cover, a locking bolt is arranged on the driving frame, and the threaded end of the locking bolt is engagedly connected to the end of the cutter shaft.

[0013] Preferably, a driven gear for being drivingly connected with the driving assembly is arranged at the one end of the cutter shaft close to the first end cover.

[0014] Preferably, an avoiding groove for assembling the cutting knife to the cutting roller is formed in the side wall of the rack.

[0015] Preferably, the upper part of the avoiding groove is in an open shape, and a top cover is detachably arranged on the top of the rack.

[0016] When the top cover is fixed on the rack, the top cover can cover the upper part of the avoiding groove.

[0017] Preferably, a fixed knife for cooperating with the cutting knife for cutting is arranged on one side of the cutting roller.

[0018] Preferably, a transmission device for transmitting the plastic strip between the fixed knife and the cutting knife is arranged on the rack, and the transmission device comprises upper and lower transmission rollers.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] The cooperation mechanism of the T-shaped groove and the T-shaped block is adopted, so that the cutting knife can be easily slid into or out of the cutting roller, the disassembly and assembly process is greatly simplified, and the maintenance cost and time are reduced. Meanwhile, the two-end opening design of the T-shaped groove cooperates with the use of the first end cover and the second end cover, so as to ensure the stability of the cutting knife after assembly, avoid loosening or falling off during operation, and ensure the safety and efficiency of production.

[0021] Further, the first through groove on the second end cover, the rotating ring on the sliding cover and the plugging block are combined in a clever manner, which further facilitates the disassembly and assembly of the cutting knife. The rotation of the rotating ring can flexibly adjust the position of the plugging block, so that the plugging block can be smoothly slid out of or into the first through groove during the disassembly and assembly of the cutting knife, which not only ensures the smoothness of the disassembly and assembly process, but also effectively seals the opening of the T-shaped groove after the cutting knife is assembled, so as to prevent the cutting knife from falling off due to vibration or external force during operation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Structure diagram of the utility model;

[0023] Figure 2 Structure diagram of the cutting roller and the cutting knife of the utility model;

[0024] Figure 3 Exploded view of the cutting roller, the first end cover and the second end cover of the utility model;

[0025] Figure 4 Structure diagram of the rack, the cutting roller, the fixed knife and the transmission device of the utility model (hidden top cover);

[0026] Figure 5 Assembly process diagram of the cutting knife from the avoiding groove of the utility model;

[0027] Figure 6 End view of the cutting roller and the cutting knife of the utility model.

[0028] In the drawing:

[0029] 1, rack, 101, avoiding groove, 102, top cover;

[0030] 2, support ring, 3, knife shaft, 301, sliding groove;

[0031] 4, cutting roller, 401, T-shaped groove, 5, cutting knife, 501, T-shaped block;

[0032] 6, first end cover, 7, second end cover, 701, first through groove, 8, sliding cover;

[0033] 9, rotating ring, 901, second through groove, 902, plugging block;

[0034] 10, driving frame, 11, locking bolt, 12, driven gear;

[0035] 13, fixed knife, 14, transmission device. Specific implementation

[0036] The utility model will be explained below with specific implementation examples, but is not the limitation of the utility model.

[0037] Example one

[0038] As Figures 1-6As shown, in this embodiment, the cutting machine provided includes a rack 1, two supporting rings 2 are arranged on the rack 1, the two supporting rings 2 are symmetrically arranged on the rack 1 and concentrically arranged, a cutter shaft 3 is installed on the two supporting rings 2, a cutting roller 4 is fixed coaxially on the cutter shaft 3, and a plurality of cutting knives 5 are distributed circumferentially on the cutting roller 4; wherein a plurality of T-shaped grooves 401 are uniformly arranged on the outer wall of the cutting roller 4, the length direction of each T-shaped groove 401 is parallel to the axis of the cutting roller 4, the two ends of the T-shaped groove 401 are in an open shape, a T-shaped block 501 is fixed on the cutting knife 5, the T-shaped block 501 is integrally formed with the cutting knife 5, and the T-shaped block 501 is movably installed in the T-shaped groove 401.

[0039] A fixed knife 13 for cooperating with the cutting knife 5 to cut is arranged on the rack 1 and located on one side of the cutting roller 4.

[0040] A transmission device 14 for transmitting the plastic strip to between the fixed knife 13 and the cutting knife 5 is arranged on the rack 1, the transmission device 14 includes upper and lower transmission rollers, the plastic strip to be cut passes out between the upper and lower transmission rollers, and the cutting is realized by cooperation of the cutting knife 5 and the fixed knife 13 under the driving of the upper and lower transmission rollers.

[0041] A first end cover 6 for closing one end of the T-shaped groove 401 is fixed at one end of the cutting roller 4, the first end cover 6 is in an annular shape, the first end cover 6 is fixed on the end of the cutting roller 4 by bolts, at this time, the first end cover 6 closes one end of each T-shaped groove 401, one end of the cutter shaft 3 close to the first end cover 6 is provided with a driven gear 12 for transmission connection with a driving assembly, the driving assembly can be fixed on the rack 1, the driving assembly can be a motor, a driving gear is arranged on the output shaft of the motor, the driving gear is in meshing connection with the driven gear 12, and when the motor is started, the driving gear and the driven gear 12 cooperate to drive the cutter shaft 3 to rotate.

[0042] A second end cover 7 is fixed at the other end of the cutting roller 4, a plurality of first through grooves 701 are arranged on the side wall of the second end cover 7, and the plurality of first through grooves 701 are arranged in one-to-one alignment with the ends of the plurality of T-shaped grooves 401;

[0043] A sliding cover 8 is slidably sleeved on one end of the cutter shaft 3 close to the second end cover 7, a rotating ring 9 is rotatably connected to the sliding cover 8, a plurality of second through grooves 901 are arranged on the side wall of the rotating ring 9, the second through grooves 901 correspond to the first through grooves 701 one by one, and a plugging block 902 for being inserted into the first through groove 701 and for closing the opening of the T-shaped groove 401 is arranged between adjacent two second through grooves 901;

[0044] The first end cover 6 and the second end cover 7 are fixed in the same way and are fixed at both ends of the cutting roller 4 respectively, so as to be fixed integrally with the cutting roller 4, so that the first end cover 6 always seals one end opening of the T-shaped groove 401, and the first through groove 701 on the second end cover 7 is always aligned with the other end opening of the T-shaped groove 401.

[0045] When the cutting knife 5 is disassembled and assembled on the cutting roller 4, the sliding cover 8 slides away from the second end cover 7 with the rotating ring 9, so that the blocking block 902 slides out of the first through groove 701, then the rotating ring 9 is rotated, so that the second through groove 901 is aligned with the first through groove 701, and the blocking block 902 is staggered with the first through groove 701, at this time, the T-shaped block 501 on the cutting knife 5 can be slid into or out of the T-shaped groove 401 from the end of the T-shaped groove 401 close to the second end cover 7, so as to realize the disassembly and assembly of the cutting knife 5.

[0046] Once the cutting knife 5 is assembled on the cutting roller 4, the rotating ring 9 is rotated, so that the second through groove 901 is aligned with the first through groove 701, and the blocking block 902 is aligned with the first through groove 701, then the sliding cover 8 slides towards the second end cover 7 with the rotating ring 9, so that the blocking block 902 slides into the inside of the first through groove 701, and the blocking block 902 seals the opening end of the T-shaped groove 401, then the relative fixed sliding cover 8 and the second end cover 7 are fixed, so that the blocking block 902 is fixed in the first through groove 701, so that the cutting knife 5 can be stably assembled on the cutting roller 4 under the cooperation of the T-shaped groove 401 and the T-shaped block 501.

[0047] A sliding groove 301 is formed in the side wall of the knife shaft 3, and a driving frame 10 is slidably connected in the sliding groove 301, the driving frame 10 is fixedly connected to the side wall of the sliding cover 8, and a locking bolt 11 is arranged on the driving frame 10, and the threaded end of the locking bolt 11 is engaged with the end of the knife shaft 3.

[0048] As shown in Figure 3 The sliding groove 301 is formed at one end of the knife shaft 3 close to the second end cover 7, the sliding groove 301 is provided with two, and the driving frame 10 is in U-shaped, the two sides of the driving frame 10 are slidably connected in the two sliding grooves 301 respectively, the locking bolt 11 is arranged at the end of the driving frame 10, and the threaded end of the locking bolt 11 is engaged with the end of the knife shaft 3, by rotating the locking bolt 11, the threaded end of the locking bolt 11 is screwed into or out of the knife shaft 3, at this time, the locking bolt 11 drives the sliding cover 8 to slide through the driving frame 10, that is, the rotating ring 9 is driven to slide.

[0049] Example two

[0050] As shown in Figure 4 and Figure 5As shown, in order to facilitate the cutting knife 5 from the cutting roll 4 is removed or cutting knife assembled to the cutting roll 4, the side wall of the rack 1 is provided with a cutting knife 5 assembled to the cutting roll 4 of the avoidance slot 101, when the need to remove a single cutting knife 5, rotating cutting roll 4, the cutting knife 5 to be removed to the position of the avoidance slot 101, sliding cutting knife 5 to the avoidance slot 101, cutting knife 5 can be smoothly from the avoidance slot 101 slip out, similarly, using the avoidance slot 101 can also be quickly assembled to the cutting roll 4 of the cutting knife 5, so that in the premise of not removing the cutting roll 4, the cutting knife 5 is quickly replaced, improve the efficiency of the replacement, the upper part of the avoidance slot 101 is open, the top of the rack 1 is detachably provided with a top cover 102; When the top cover 102 is fixed on the rack 1, the top cover 102 can cover the upper part of the avoidance slot 101, when the top cover 102 is removed, through the avoidance slot 101 can be more convenient for cutting knife 5 disassembly and assembly.

[0051] Finally, it should be noted that the above examples are used to illustrate rather than limit the technical solutions of the present application, although the present application is described in detail with reference to the above examples, those skilled in the art should understand that the present application can still be modified or replaced, without departing from the spirit and scope of the present application, any modification or partial replacement, it should be covered in the scope of the claims of the present application.

Claims

1. A pelletizer, characterized in that, Includes a frame (1), on which are provided: Two support rings (2) are symmetrically arranged on the frame (1) and the two support rings (2) are concentrically arranged; The cutter shaft (3) is mounted on two support rings (2); A cutting roller (4) is coaxially fixed on a cutter shaft (3), and a plurality of cutting blades (5) are distributed circumferentially on the cutting roller (4); The outer wall of the cutting roller (4) is uniformly provided with a plurality of T-shaped grooves (401), the length direction of each T-shaped groove (401) is parallel to the axis of the cutting roller (4), the two ends of the T-shaped groove (401) are open, and a T-shaped block (501) is fixed on the cutting blade (5), and the T-shaped block (501) is movably installed inside the T-shaped groove (401).

2. A pelletizer according to claim 1, characterized in that, One end of the cutting roller (4) is fixed with a first end cap (6) for sealing one end opening of the T-slot (401); The other end of the cutting roller (4) is fixed with a second end cap (7). The side wall of the second end cap (7) is provided with a plurality of first through grooves (701). The ends of the plurality of first through grooves (701) are aligned with the ends of the plurality of T-grooves (401). The cutter shaft (3) is slidably sleeved with a sliding cover (8) at one end near the second end cover (7). A rotating ring (9) is rotatably connected to the sliding cover (8). Multiple second through slots (901) are provided on the side wall of the rotating ring (9). The second through slots (901) correspond one-to-one with the first through slots (701). A sealing block (902) is provided between two adjacent second through slots (901) for inserting into the first through slot (701) and for sealing the opening of the T-shaped slot (401).

3. A pelletizer according to claim 2, characterized in that, The cutter shaft (3) has a sliding groove (301) on its side wall. A drive frame (10) is slidably connected inside the sliding groove (301). The drive frame (10) is fixedly connected to the side wall of the sliding cover (8). A locking bolt (11) is provided on the drive frame (10). The threaded end of the locking bolt (11) is engaged with the end of the cutter shaft (3).

4. A pelletizer according to claim 1, characterized in that, The cutter shaft (3) is provided with a driven gear (12) for transmission connection with the drive assembly at one end near the first end cover (6).

5. A pelletizer according to claim 1, characterized in that, The side wall of the frame (1) is provided with a clearance groove (101) for the cutting blade (5) to be assembled to the cutting roller (4).

6. A pelletizer according to claim 5, characterized in that, The upper part of the clearance groove (101) is open, and the top of the frame (1) is detachably provided with a top cover (102); When the top cover (102) is fixed on the frame (1), the top cover (102) can cover the upper part of the clearance slot (101).

7. A pelletizer according to claim 1, characterized in that, A fixed blade (13) is provided on the frame (1) and on one side of the cutting roller (4) to cut in conjunction with the cutting blade (5).

8. A pelletizer according to claim 7, characterized in that, The frame (1) is provided with a transmission device (14) for transmitting plastic strips between the fixed blade (13) and the cutting blade (5), and the transmission device (14) includes upper and lower transmission rollers.

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