Granulator with multiple granulating mechanisms

Abstract

The granulator comprises a granulating head, a plurality of mounting grooves are formed in one side face of the granulating head, feeding holes are formed in the inner wall faces of the mounting grooves, a cover plate is mounted on one side face of the granulating head, discharging holes are formed in the positions, right opposite to the feeding holes, of the cover plate, mounting cavities are formed between the mounting grooves and the cover plate, and the mounting cavities are communicated with the mounting grooves. Cutting blades are arranged in the mounting cavities, pelletizing holes communicated with the discharging hole and the feeding hole are formed in the middles of the cutting blades, positioning grooves communicated with the outside are formed in one ends of the mounting grooves, pulling plates are mounted at the positions, right opposite to the positioning grooves, of one ends of the cutting blades, and one ends of the pulling plates penetrate through the positioning grooves, extend to the outside and are provided with compression columns. According to the utility model, the structure is simple, the cutting blade is internally arranged, the pollution condition is reduced, each cutting knife has an automatic back-and-forth lifting function, two-time pelletizing operation can be carried out through one-time movement, the pelletizing efficiency is improved, and the cutting blade is simple to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of pelletizers, and particularly relates to a pelletizer with a multi-channel pelletizing mechanism. Background Technique

[0002] A pelletizer refers to a machine that cuts the extruded material into certain lengths. The processed material particles can be heated more quickly and evenly for reprocessing. Generally, a pelletizer refers to a plastic pelletizer, that is, the molten plastic is extruded into strips through an extrusion device and cut into pellets by a rotating cutting knife.

[0003] Since the extrusion speed of the extrusion device is fixed, and the rotating cutting knife can exactly cut out plastic particles with the same length in one rotation, so to improve the production efficiency, only by increasing the rotation speed of the cutting knife. However, the rotation speed of the motor has a limit, and too fast rotation speed will accelerate the wear of the rotating shaft. Therefore, simply increasing the rotation speed of the cutting knife cannot solve the fundamental problem, and the rotationally installed cutting knife is troublesome to replace. Moreover, the cutting knife is generally exposed, contacting the dust and impurities in the outside world, thus causing pollution to the pelletizing. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a pelletizer with a multi-channel pelletizing mechanism, with the cutting blades arranged inside, reducing the pollution situation, and each cutting knife having the function of automatically lifting back and forth, and being able to perform two pelletizing operations in one movement, so as to solve the problems put forward in the above background technique.

[0005] The utility model is realized by the following technical scheme: a pelletizer with a multi-channel pelletizing mechanism, including a pelletizing head. On one side surface of the pelletizing head, there are a plurality of installation grooves. On the inner wall surface of the installation grooves, there are feed holes. On one side surface of the pelletizing head, a cover plate is installed. Opposite to the feed holes on the cover plate, there are discharge holes. Between the installation grooves and the cover plate, installation cavities are formed respectively. In the installation cavities, there are cutting blades. In the middle of the cutting blades, there are pelletizing holes communicating with the discharge holes and the feed holes respectively. At one end of each installation groove, there is a positioning groove communicating with the outside. Opposite to the positioning groove at one end of the cutting blade, there is a pull plate installed. One end of the pull plate passes through the positioning groove and extends to the outside, and a pressure column is installed on each of them. Outside the pelletizing head, there is a driving mechanism for driving the pressure column to move outwards.

[0006] As a preferred technical scheme, the driving mechanism includes a motor, a driving ring, a gear, the motor and a plurality of convex teeth. The driving ring is sleeved outside the pelletizing head. The plurality of convex teeth are installed on the outside of the driving ring in an annular structure. The motor is installed on the outer circumferential surface of the pelletizing head. The gear is installed on the rotating shaft of the motor. The gear is meshed with the convex teeth. On the outer circumferential surface of the driving ring, on one side of the pressure column, there is a protruding extrusion part. The extrusion parts are all arranged in an arc structure.

[0007] As a preferred technical solution, positioning blocks are provided at both ends of the cutting disc. The outer end faces of the positioning blocks are in contact with the inner wall surfaces of the installation grooves, and a plurality of first compression springs are installed between the positioning blocks and the cutting disc.

[0008] As a preferred technical solution, ball grooves are provided on one side of each installation groove. Balls are movably installed inside the ball grooves. Centering grooves are provided on one side surface of the cutting disc. A part of each ball extends along the opening of the ball groove into the centering groove. Second compression springs are also installed inside the balls. One end of each second compression spring abuts against the ball and pushes the ball outwards through the second compression spring.

[0009] As a preferred technical solution, a plurality of first screw holes are provided in the middle of the cover plate, and a plurality of second screw holes are provided in the middle of the granulating head. Bolts are threadedly connected in the opposite first screw holes and second screw holes.

[0010] As a preferred technical solution, an annular groove is provided on the outer peripheral surface of the granulating head, and a positioning ring is installed on the inner peripheral surface of the driving ring. The positioning ring is movably arranged in the annular groove.

[0011] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple. The cutting disc is internally provided, reducing the contamination situation. And each cutting knife has the function of automatically lifting back and forth. One movement can perform two granulating operations, increasing the granulating efficiency. Moreover, the installation and disassembly of the cutting disc are simple. After removing the cover plate, the cutting disc can be directly removed, increasing the efficiency. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 It is a rear view of the present utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the present utility model after removing the cover plate;

[0016] Figure 4 It is a schematic diagram of the structure of the present utility model after removing any one cutting disc.

[0017] Among them, 1. pelletizing head; 2. cover plate; 3. discharge hole; 4. bolt; 5. pull plate; 6. compression column; 7. drive ring; 8. convex tooth; 9. extrusion part; 10. motor; 11. gear; 12. feed hole; 13. cutting disc; 14. pelletizing hole; 15. positioning block; 16. first compression spring; 17. installation groove; 18. positioning groove; 19. sphere. Detailed implementation manners

[0018] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0019] All the features disclosed in this specification, or all the steps in any disclosed method or process, except for mutually exclusive features and / or steps, can be combined in any manner.

[0020] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless specifically stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0021] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a pelletizer with a multi-channel pelletizing mechanism of the present utility model includes a pelletizing head 1. A plurality of installation grooves 17 are provided on one side surface of the pelletizing head 1. A feed hole 12 is provided on the inner wall surface of the installation groove 17. A cover plate 2 is installed on one side surface of the pelletizing head 1. Discharge holes 3 are provided at positions of the cover plate 2 corresponding to the feed holes 12. Installation cavities are formed between the installation grooves 17 and the cover plate 2. Cutting discs 13 are provided in the installation cavities. Pelletizing holes 14 communicating with the discharge holes 3 and the feed holes 12 are provided in the middle of the cutting discs 13. Positioning grooves 18 communicating with the outside are provided at one ends of the installation grooves 17. Pull plates 5 are installed at positions of one ends of the cutting discs 13 corresponding to the positioning grooves 18. One ends of the pull plates 5 extend through the positioning grooves 18 to the outside and are all installed with compression columns 6. A driving mechanism for driving the compression columns to move outwards is installed outside the pelletizing head 1;

[0022] Among them, a groove communicating with the positioning groove is provided on the positioning block at the end facing the positioning groove, so that the pull plate can extend to the outside smoothly.

[0023] In this embodiment, the driving mechanism includes a motor 10, a driving ring 7, a gear 11, the motor 10 and multiple convex teeth 8. The driving ring 7 is sleeved outside the pelletizing head 1. The multiple convex teeth 8 are installed outside the driving ring 7 in an annular structure. The motor 10 is installed on the outer circumferential surface of the pelletizing head 1. The gear 11 is installed on the rotating shaft of the motor 10. The gear 11 is meshed and connected with the convex teeth 8. The outer circumferential surface of the driving ring 7 protrudes on one side of the pressure receiving column 6 to form an extrusion part 9. The extrusion parts 9 are all arranged in an arc structure.

[0024] In this embodiment, positioning blocks 15 are arranged at both ends of the cutting blade 13. The outer end faces of the positioning blocks 15 are in contact with the inner wall surfaces of the installation grooves 17. A plurality of first compression springs 16 are installed between the positioning blocks 15 and the cutting blade 13;

[0025] Among them, as Figure 1 shown, it can be seen that the cutting blade is currently arranged opposite to the feeding hole because the extrusion part is arranged at the bottom of the pressure receiving column. Once the extrusion part is moved away, the cutting blade will be pulled inward by the rebound of the first compression spring, causing the cutting blade to be misaligned with the feeding hole and enabling the cutting blade to perform secondary cutting after returning to its position;

[0026] Among them, when not in use, the feeding hole can be blocked by the returned cutting blade, preventing the entry of external dust.

[0027] In this embodiment, ball grooves are provided on one side of the installation grooves 17. Spheres 19 are movably installed inside the ball grooves. Centering grooves are provided on one side surfaces of the cutting blades 13. A part of each sphere 19 extends along the opening of the ball groove into the centering groove. Second compression springs are also installed inside the spheres 19. One end of each second compression spring abuts against the sphere 19 and pushes the sphere 19 outward through the second compression spring. When the cutting blade moves to the middle, the sphere can better position it. And a second compression spring is arranged inside the sphere. After the sphere is pressed, it can automatically retract into the interior of the ball groove, avoiding affecting the up and down movement of the cutting blade.

[0028] In this embodiment, a plurality of first screw holes are provided in the middle of the cover plate 2, and a plurality of second screw holes are provided in the middle of the pelletizing head 1. Bolts 4 are threadedly connected in the opposite first screw holes and second screw holes.

[0029] In this embodiment, an annular groove is provided on the outer circumferential surface of the pelletizing head 1. A positioning ring is installed on the inner circumferential surface of the driving ring 7. The positioning ring is movably arranged in the annular groove, enabling the driving ring to only rotate along the annular groove, avoiding the displacement of the driving ring and increasing the stability.

[0030] In use, start the motor. The start of the motor drives the convex teeth and the drive ring. The rotating drive ring can drive the extrusion part. When the extrusion part passes through the bottom of the pressure-receiving column, the extrusion part can push the pressure-receiving column outwards. The movement of the pressure-receiving column drives the pull plate and the cutting blade. The plastic strips generated by the granulator can enter the cutting hole along the feeding hole and can be directly cut by the moving cutting blade. After the extrusion part moves away from the bottom of the pressure-receiving part, the cutting blade can be pulled back by the rebound of the first compression spring. The cutting blade can cut the plastic strips again after returning to its position. One movement can perform two granulation operations, increasing the granulation efficiency. Moreover, the cutting blade is arranged inside, greatly reducing the probability of being polluted by the outside;

[0031] When replacing, remove the cover plate. After the cover plate is removed, the cutting blade can be directly taken out from the installation groove, and the positioning block, the pull plate and the pressure-receiving column are taken out synchronously, which greatly facilitates the disassembly and replacement.

[0032] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A granulator with a multi-channel granulation mechanism, characterized in that: It includes a pelletizing head (1). A plurality of mounting grooves (17) are provided on one side surface of the pelletizing head (1). A feed hole (12) is provided on the inner wall surface of the mounting groove (17). A cover plate (2) is mounted on one side surface of the pelletizing head (1). Discharge holes (3) are provided at positions of the cover plate (2) corresponding to the feed holes (12). An installation cavity is formed between the mounting groove (17) and the cover plate (2). A cutting blade (13) is provided in each installation cavity. A pelletizing hole (14) communicating with the discharge hole (3) and the feed hole (12) is provided in the middle of the cutting blade (13). A positioning groove (18) communicating with the outside is provided at one end of the mounting groove (17). A pull plate (5) is mounted at a position of one end of the cutting blade (13) corresponding to the positioning groove (18). One end of the pull plate (5) extends through the positioning groove (18) to the outside and a pressure receiving column (6) is mounted on each. A driving mechanism for driving the pressure receiving column to move outward is mounted outside the pelletizing head (1).

2. The granulator with a multi-channel granulation mechanism according to claim 1, characterized in that: The driving mechanism includes a motor (10), a driving ring (7), a gear (11), a motor (10) and a plurality of convex teeth (8). The driving ring (7) is sleeved outside the pelletizing head (1). The plurality of convex teeth (8) are mounted on the outside of the driving ring (7) in an annular structure. The motor (10) is mounted on the outer circumferential surface of the pelletizing head (1). The gear (11) is mounted on the rotating shaft of the motor (10). The gear (11) is meshed and connected with the convex teeth (8). An extrusion part (9) is formed by protruding on the outer circumferential surface of the driving ring (7) on one side of the pressure receiving column (6). The extrusion parts (9) are all arranged in an arc structure.

3. The granulator with a multi-channel granulation mechanism according to claim 1, wherein: Positioning blocks (15) are provided at both ends of the cutting blade (13). The outer end surfaces of the positioning blocks (15) are in contact with the inner wall surface of the mounting groove (17). A plurality of first compression springs (16) are mounted between the positioning blocks (15) and the cutting blade (13).

4. The granulator with a multi-channel granulation mechanism according to claim 1, characterized in that: A ball groove is provided on one side of the mounting groove (17). A sphere (19) is movably mounted inside the ball groove. A centering groove is provided on one side surface of the cutting blade (13). A part of the sphere (19) extends into the centering groove along the opening of the ball groove. A second compression spring is also mounted inside the sphere (19). One end of the second compression spring abuts against the sphere (19) and the sphere (19) is pushed outward by the second compression spring.

5. The granulator with a multi-channel granulation mechanism according to claim 1, characterized in that: A plurality of first screw holes are provided in the middle of the cover plate (2). A plurality of second screw holes are provided in the middle of the pelletizing head (1). Bolts (4) are threadedly connected in the opposite first screw holes and second screw holes.

6. The granulator with a multi-channel granulation mechanism according to claim 1, wherein: An annular groove is provided on the outer circumferential surface of the pelletizing head (1). A positioning ring is mounted on the inner circumferential surface of the driving ring (7). The positioning ring is movably arranged in the annular groove.

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