EVA underwater pelletizer with replaceable cutter head

Abstract

The utility model relates to a convenient EVA underwater granulator of changing tool bit belongs to granulating equipment technical field, including installation baseplate and the extrusion board of being located in extruder output end, the inside slide of installation of installation baseplate has displacement base, the top of displacement base rotatoryly installs double tool bit subassembly, double tool bit subassembly includes rotatoryly installed in the top of displacement base rotatory base, the top fixed mounting of rotatory base has the bearing seat of two numbers, two bearing seat between rotatoryly installs cutting shaft through bearing, both ends of cutting shaft all are provided with cutting blade. The convenient EVA underwater granulator of changing tool bit, install cutting shaft through bearing seat on the top of rotatory base, install cutting blade on both ends of cutting shaft, when replacing cutting blade, rotatory base rotates one hundred and eighty degrees, and cutting blade of the other end is rotated to one side of extrusion board, and the time of stopping machine replacement cutting blade is saved.

Description

Technical Field

[0001] This utility model relates to the field of granulation equipment technology, specifically to an EVA underwater granulator with a convenient blade replacement mechanism. Background Technology

[0002] EVA material, short for ethylene-vinyl acetate copolymer, is a thermoplastic elastomer made from ethylene and vinyl acetate through a copolymerization reaction. It combines the elasticity of rubber with the processability of plastics, and due to its unique combination of properties, it is widely used in many fields. Underwater pelletizers are a new type of machinery that directly pelletizes the melt by contacting cooling water with the extrusion die surface instantaneously, without the need for or without the ability to use a pelletizing rod.

[0003] Utility model patent CN219926601U discloses a pelletizing mechanism for an EVA underwater pelletizer with convenient blade replacement. The mechanism includes a pelletizing mechanism and a pelletizing cover. An extruder is located on one side of the pelletizing cover, and a die tube is connected to the extruder's outlet. The pelletizing mechanism is sleeved on the other side of the pelletizing cover. The pelletizing mechanism includes a drive motor, a fixed base, and a pelletizing blade holder. The drive motor drives the shaft to the right, the fixed base is located in front of the drive motor, and the pelletizing blade holder is movably mounted at the end of the drive motor's drive shaft, with the die tube abutting against it. This utility model features an opening with a cover on the upper side of the pelletizing cover, allowing access to the pelletizing blade holder. The pelletizing blade holder has a symmetrical structure and is bolted together. When the pelletizing blade holder needs replacement, it can be easily disassembled in half through the opening, and the left and right blade holders can be removed for easy replacement. This utility model has a novel structure and ingenious design, making it more convenient than existing blade replacement methods and suitable for widespread adoption.

[0004] However, when replacing the cutting head of this EVA underwater pelletizer, the machine needs to be stopped first, the cutting head needs to be separated from the extruder, and then the cutting head needs to be replaced and reconnected to the extruder. This process is complicated, increases downtime, and reduces production efficiency. Therefore, an EVA underwater pelletizer with a convenient cutting head replacement is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an EVA underwater granulator with convenient cutter head replacement, which has advantages such as reducing downtime required for cutter head replacement and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An EVA underwater granulator with easy-to-change cutter heads includes a mounting base and an extrusion plate located at the output end of an extruder. A displacement base is slidably mounted inside the mounting base, and a double-cutter head assembly is rotatably mounted on the top of the displacement base.

[0008] The dual-blade assembly includes a rotating base rotatably mounted on top of a displacement base. Two bearing seats are fixedly mounted on the top of the rotating base. A cutting shaft is rotatably mounted between the two bearing seats via a bearing. Both ends of the cutting shaft are provided with cutting blades.

[0009] Furthermore, mounting plates are fixedly installed at both ends of the cutting shaft, and a fixing screw and a positioning shaft are fixedly installed on one side of the mounting plate. The cutting blade is sleeved on the surface of the fixing screw and the positioning shaft, and a mounting flange is sleeved on the surface of the fixing screw and the positioning shaft. The mounting flange is installed on the surface of the fixing screw by a nut.

[0010] Furthermore, mounting base plates are fixedly installed on both sides of the rotating base that are far apart from each other, and a support plate is fixedly installed on the top of the mounting base plates.

[0011] Furthermore, a sealing cylinder is fixedly installed on one side of the supporting plate, and a sealing end plate is fixedly installed on the movable end of the sealing cylinder.

[0012] Furthermore, an extrusion hole is provided on one side of the extrusion plate, a cutting cavity is fixedly installed on one side of the extrusion plate, a water inlet pipe is fixedly installed on the top of the cutting cavity, a water outlet pipe is fixedly installed on the bottom of the cutting cavity, and a sealing end plate is adapted to the cutting cavity.

[0013] Furthermore, a driving helical gear is rotatably mounted on the top of the rotating base, and a driven helical gear that meshes with the driving helical gear is fixedly mounted on the surface of the cutting shaft.

[0014] Furthermore, a cutting motor is fixedly installed on the inner top wall of the rotating base, and the output shaft of the cutting motor is fixedly connected to the drive helical gear.

[0015] Furthermore, a displacement motor is fixedly installed on the inner top wall of the displacement base, the output shaft of the displacement motor is fixedly connected to the rotating base, and a docking cylinder is fixedly installed on one side of the mounting base, with the movable end of the docking cylinder fixedly connected to one side of the displacement base.

[0016] Compared with the prior art, this utility model provides an EVA underwater granulator with convenient cutter head replacement, which has the following beneficial effects:

[0017] 1. This EVA underwater pelletizer with convenient blade replacement uses a cutting shaft mounted on the top of the rotating base via a bearing seat. Cutting blades are installed at both ends of the cutting shaft. When replacing the cutting blades, the rotating base rotates 180 degrees, rotating the cutting blade at the other end to the extrusion plate side. This saves time by eliminating downtime for blade replacement and solves the problem of common EVA underwater pelletizer pelletizing mechanisms, which require stopping the machine, separating the cutting blade from the extruder, replacing the cutting blade, and then reconnecting the cutting blade to the extruder. This process is complicated, increases downtime, and reduces production efficiency.

[0018] 2. This EVA underwater granulator with easy-to-change cutter head uses a sealing cylinder on one side of the support plate. The sealing cylinder moves the sealing end plate, adjusting the distance between the sealing end plate and the cutting blade, thereby adjusting the distance between the cutting blade and the extrusion plate and adjusting the granulation size. Attached Figure Description

[0019] Figure 1 This is a front sectional view of the structure of this utility model;

[0020] Figure 2 This is a top view of the rotating base of this utility model;

[0021] Figure 3 This is a front sectional view of the extruded plate of this utility model;

[0022] Figure 4 This is a three-dimensional view of the sealing end plate of this utility model.

[0023] In the diagram: 1. Mounting base; 2. Extrusion plate; 201. Extrusion hole; 202. Cutting chamber; 203. Water inlet pipe; 204. Water outlet pipe; 3. Displacement base; 4. Rotating base; 5. Bearing seat; 6. Cutting shaft; 61. Mounting plate; 62. Fixing screw; 63. Positioning shaft; 7. Cutting blade; 8. Mounting base plate; 9. Support plate; 10. Sealing cylinder; 11. Sealing end plate; 12. Drive helical gear; 13. Driven helical gear; 14. Cutting motor; 15. Shifting motor; 16. Docking cylinder; 17. Mounting flange. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1 to 4An EVA underwater granulator with easy-to-change cutter head in this embodiment includes a mounting base 1 and an extrusion plate 2 located at the output end of the extruder. A displacement base 3 is slidably installed inside the mounting base 1, and a double cutter head assembly is rotatably installed on the top of the displacement base 3.

[0026] The dual-blade assembly includes a rotating base 4 rotatably mounted on top of the displacement base 3. Two bearing seats 5 are fixedly mounted on the top of the rotating base 4. A cutting shaft 6 is rotatably mounted between the two bearing seats 5 via a bearing. Both ends of the cutting shaft 6 are provided with cutting blades 7.

[0027] Specifically, the extrusion plate 2 is connected to the cutting blade 7 at one end of the cutting shaft 6. The rotation of the cutting shaft 6 drives the cutting blade 7 to rotate for granulation. When the cutting blade 7 needs to be replaced, after the machine is stopped, the displacement base 3 moves to separate the cutting blade 7 from the extrusion plate 2. Then, the rotating base 4 rotates to drive the two cutting blades 7 to switch positions, aligning and connecting the new cutting blade 7 with the extrusion plate 2. Two cutting blades 7 can be used at one time, reducing the frequency of disassembling and assembling the cutting blades 7, reducing downtime, and improving production efficiency. The cutting blade 7 at the other end can be replaced while adjusting the distance between the cutting blade 7 and the extrusion plate 2.

[0028] Please see Figure 3 and Figure 4 In this embodiment, mounting plates 61 are fixedly installed at both ends of the cutting shaft 6. A fixing screw 62 and a positioning shaft 63 are fixedly installed on one side of the mounting plate 61. The cutting blade 7 is sleeved on the surface of the fixing screw 62 and the positioning shaft 63. A mounting flange 17 is sleeved on the surface of the fixing screw 62 and the positioning shaft 63. The mounting flange 17 is installed on the surface of the fixing screw 62 by a nut.

[0029] In this embodiment, mounting base plates 8 are fixedly installed on both sides of the rotating base 4 that are far apart from each other, and a support plate 9 is fixedly installed on the top of the mounting base plates 8.

[0030] Secondly, a sealing cylinder 10 is fixedly installed on one side of the supporting plate 9, and a sealing end plate 11 is fixedly installed on the movable end of the sealing cylinder 10.

[0031] Please see Figure 3 In this embodiment, an extrusion hole 201 is provided on one side of the extrusion plate 2, and a cutting cavity 202 is fixedly installed on one side of the extrusion plate 2. A water inlet pipe 203 is fixedly installed on the top of the cutting cavity 202, and a water outlet pipe 204 is fixedly installed on the bottom of the cutting cavity 202. The sealing end plate 11 is adapted to the cutting cavity 202. After adjusting the distance between the cutting blade 7 and the extrusion plate 2, the sealing cylinder 10 drives the sealing end plate 11 to move, so that the sealing end plate 11 aligns with the cutting cavity 202, sealing the cutting cavity 202 and preventing water leakage.

[0032] Please see Figure 1 and Figure 2 In this embodiment, a driving helical gear 12 is rotatably mounted on the top of the rotating base 4, and a driven helical gear 13 that meshes with the driving helical gear 12 is fixedly mounted on the surface of the cutting shaft 6.

[0033] A cutting motor 14 is fixedly installed on the inner top wall of the rotating base 4, and the output shaft of the cutting motor 14 is fixedly connected to the driving helical gear 12. The cutting motor 14 drives the driving helical gear 12 to rotate, which in turn drives the driven helical gear 13 to rotate, and thus drives the cutting shaft 6 to rotate.

[0034] Secondly, a shifting motor 15 is fixedly installed on the inner top wall of the displacement base 3. The output shaft of the shifting motor 15 is fixedly connected to the rotating base 4. A docking cylinder 16 is fixedly installed on one side of the mounting base 1, and the movable end of the docking cylinder 16 is fixedly connected to one side of the displacement base 3. The shifting motor 15 drives the cutting shaft 6 to shift, and the direction of rotation is opposite each time to prevent the air pipe of the sealing cylinder 10 and the wiring of the cutting motor 14 from getting tangled. The docking cylinder 16 drives the displacement base 3 to move, causing the cutting blade 7 to dock and separate from the extrusion plate 2.

[0035] The working principle of the above embodiment is as follows: the extrusion plate 2 is connected to the cutting blade 7 at one end of the cutting shaft 6. The rotation of the cutting shaft 6 drives the cutting blade 7 to rotate for granulation. When the cutting blade 7 needs to be replaced, after the machine is stopped, the displacement base 3 moves to separate the cutting blade 7 from the extrusion plate 2. Then the rotating base 4 rotates to drive the two cutting blades 7 to switch positions, aligning and connecting the new cutting blade 7 with the extrusion plate 2.

[0036] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0037] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] 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. An EVA underwater granulator with easy-to-change cutter head, comprising a mounting base (1) and an extrusion plate (2) located at the output end of the extruder, characterized in that: The mounting base (1) has a sliding displacement base (3) inside, and a double blade assembly is rotatably mounted on the top of the displacement base (3). The dual-blade assembly includes a rotating base (4) rotatably mounted on the top of the displacement base (3). Two bearing seats (5) are fixedly mounted on the top of the rotating base (4). A cutting shaft (6) is rotatably mounted between the two bearing seats (5) via a bearing. Both ends of the cutting shaft (6) are provided with cutting blades (7).

2. The EVA underwater granulator with easily replaceable cutter head as described in claim 1, characterized in that: Both ends of the cutting shaft (6) are fixedly installed with mounting plates (61). A fixing screw (62) and a positioning shaft (63) are fixedly installed on one side of the mounting plate (61). The cutting blade (7) is sleeved on the surface of the fixing screw (62) and the positioning shaft (63). A mounting flange (17) is sleeved on the surface of the fixing screw (62) and the positioning shaft (63). The mounting flange (17) is installed on the surface of the fixing screw (62) by a nut.

3. The EVA underwater granulator with easily replaceable cutter head according to claim 1, characterized in that: The rotating base (4) has mounting base plates (8) fixedly installed on both sides that are far apart from each other, and a support plate (9) is fixedly installed on the top of the mounting base plate (8).

4. An EVA underwater granulator with a conveniently replaceable cutter head as described in claim 3, characterized in that: A sealing cylinder (10) is fixedly installed on one side of the support plate (9), and a sealing end plate (11) is fixedly installed on the movable end of the sealing cylinder (10).

5. An EVA underwater granulator with easily replaceable cutter heads according to claim 4, characterized in that: The extrusion plate (2) has an extrusion hole (201) on one side, a cutting cavity (202) is fixedly installed on one side of the extrusion plate (2), a water inlet pipe (203) is fixedly installed on the top of the cutting cavity (202), a water outlet pipe (204) is fixedly installed on the bottom of the cutting cavity (202), and the sealing end plate (11) is adapted to the cutting cavity (202).

6. An EVA underwater granulator with easily replaceable cutter heads according to claim 1, characterized in that: The top of the rotating base (4) is rotatably mounted with a driving helical gear (12), and the surface of the cutting shaft (6) is fixedly mounted with a driven helical gear (13) that meshes with the driving helical gear (12).

7. An EVA underwater granulator with a conveniently replaceable cutter head as described in claim 6, characterized in that: A cutting motor (14) is fixedly installed on the inner top wall of the rotating base (4), and the output shaft of the cutting motor (14) is fixedly connected to the driving helical gear (12).

8. An EVA underwater granulator with easily replaceable cutter heads according to claim 1, characterized in that: A shift motor (15) is fixedly installed on the inner top wall of the displacement base (3). The output shaft of the shift motor (15) is fixedly connected to the rotating base (4). A docking cylinder (16) is fixedly installed on one side of the mounting base (1). The movable end of the docking cylinder (16) is fixedly connected to one side of the displacement base (3).

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