Granulator for PC plastic particle production

Abstract

The utility model provides a granulator for PC plastic particle production, which comprises a base and a sealing shell, the sealing shell covers a sealing base on the base to form an extrusion cavity, the sealing shell is provided with a feed pipe, and one end of the extrusion cavity is provided with a discharge port; an extrusion assembly is arranged above the machine base, and one end of the extrusion assembly is arranged in the extrusion cavity in a penetrating mode. A rotating support is arranged on the machine base, multiple sets of discharging plates are arranged on the rotating support, multiple sets of discharging holes are formed in the discharging plates, waiting areas are formed among the multiple sets of discharging holes, and one set of discharging plates are located at the discharging port; a pelletizing assembly is further arranged above the machine base and located on one side of the discharging plate. According to the granulator, the discharging plates of different specifications are switched through the rotating support, plastic particles of different sizes can be produced without replacing a whole set of mold, the operation process is simplified, and the cost is reduced; the waiting area enables the cutting blade to avoid the discharging hole, smooth discharging is guaranteed, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] This utility model belongs to the field of pelletizing machine technology, and more specifically, it relates to a pelletizing machine for PC plastic pellet production. Background Technology

[0002] PC plastic granules are an important industrial raw material widely used in many fields such as electronics, automobiles, and medical. A pelletizer is a device that processes molten PC plastic into granules, effectively controlling the shape and size of the granules, which is crucial for ensuring the quality of PC plastic products and production efficiency. However, traditional pelletizers can only produce granules of a single size. To change the granule size, the entire set of pelletizing dies must be replaced, resulting in complicated operations, high labor and time costs, increased production costs, and prolonged equipment downtime, seriously affecting production efficiency and enterprise profits. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a pelletizer for PC plastic pellet production, which solves the technical problems of traditional pelletizers having complicated mold changing operations, high costs, and reduced production efficiency.

[0004] The purpose and effect of this utility model of a pelletizer for PC plastic pellet production are achieved by the following specific technical means:

[0005] A pelletizer for producing PC plastic pellets includes a base and a sealing shell. A sealing base is mounted on the base, and the sealing shell covers the sealing base to form a cylindrical extrusion chamber. A feed pipe is mounted on the sealing shell, and an outlet is located at one end of the extrusion chamber. An extrusion assembly is mounted above the base, with one end of the extrusion assembly passing through the extrusion chamber. A rotating support, driven to rotate by a first motor, is mounted on the base. Multiple sets of discharge plates are mounted on the rotating support, and multiple sets of discharge holes are evenly spaced on the discharge plates, with waiting areas formed between the sets of discharge holes. A pelletizing assembly is also mounted above the base, located on one side of the discharge plates.

[0006] According to a preferred embodiment, the extrusion assembly includes an extrusion rod and a movable component. One end of the extrusion rod passes through the sealing shell and is fitted with an extrusion plate on the sealing base. The extrusion plate is located inside the extrusion chamber and contacts the inner wall of the extrusion chamber, forming a piston-cylinder structure with the extrusion chamber. Multiple sets of connecting plates are provided on the machine base, located on both sides of the sealing base. Lead screws are provided on both sides of the sealing base and installed between the multiple sets of connecting plates on the same side. Movable sleeves are provided at both ends of the movable component, sleeved on the lead screws and threadedly engaged with them. The other end of the extrusion rod is connected to the movable component.

[0007] According to a preferred embodiment, the extrusion assembly further includes a second motor, and a connecting wheel is provided at one end of the lead screw. One set of connecting wheels at one end of the lead screw is connected to another set of connecting wheels at one end of the lead screw via a transmission belt. A mounting plate is provided on the machine base, and the second motor is mounted on the mounting plate. The shaft end of the second motor is connected to one of the connecting wheels.

[0008] According to a preferred embodiment, the rotating bracket is provided with multiple sets of mounting frames, and the discharge plate is locked in the mounting frames; a limiting groove is opened at one end of both the sealing shell and the sealing base, a limiting block is provided in the limiting groove, and a spring is provided in the limiting groove, one end of the spring is connected to the limiting block, and the other end is connected to the bottom of the limiting groove, and one set of the mounting frames is locked between two sets of the limiting blocks.

[0009] According to a preferred embodiment, the mounting frame is provided with multiple sets of positioning posts, and the discharge plate is provided with positioning holes corresponding to the positioning posts, with the positioning posts passing through the positioning holes.

[0010] According to a preferred embodiment, a protective cover is provided above the machine base, and a protective cavity is formed above the machine base by the protective cover. The discharge port, the rotating bracket and the pelletizing assembly are all located in the protective cavity. A through groove is provided on the protective cover, and a set of the mounting frames passes through the through groove and is located outside the protective cover.

[0011] According to a preferred embodiment, a placement plate is provided on the machine base, and an assembly plate is provided on the placement plate. A collection area is formed between the machine base, the placement plate, and the assembly plate. The pelletizing assembly is mounted on the assembly plate. A collection frame is provided in the collection area, and a collection box is provided on the collection frame. The collection box is configured as a drawer structure. A guide plate is provided on the collection frame, and the guide plate contacts the discharge plate. Multiple sets of baffles are provided on one side of the guide plate, and a guide pipe is formed through the guide plate and the multiple sets of baffles. The collection box is located below the collection box.

[0012] According to a preferred embodiment, the pelletizing assembly includes a third motor and a cutting rod. The third motor is mounted on the assembly plate. One end of the cutting rod is connected to the shaft end of the third motor, and the other end of the cutting rod is provided with a cutting blade. The cutting blade contacts the discharge plate and is located in the waiting area on the discharge plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This device has multiple sets of discharge plates on a rotating support, and the discharge plates have discharge holes of different specifications. By simply rotating the rotating support, the discharge plates of different specifications can be aligned with the discharge ports, thereby realizing the molding of plastic granules of different sizes. There is no need to change the entire set of pelletizing molds, which greatly simplifies the operation process, reduces labor and time costs, lowers production costs, shortens equipment downtime, and significantly improves production efficiency.

[0015] 2. The extrusion assembly, through the cooperation of the lead screw and the moving sleeve, enables the extrusion plate to move smoothly, ensuring uniform extrusion of plastic granules; the cutting blade of the pelletizing assembly is located in the waiting area of ​​the discharge plate, which can accurately cut the extruded plastic, improving the precision and quality of pelletizing; the collection frame and collection box in the collection area facilitate the collection of plastic granules, and the collection box adopts a drawer structure for easy cleaning and replacement; the protective cover effectively protects the safety of operators and prevents external impurities from entering the pelletizing process, ensuring product quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembled structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0018] Figure 3 This is a structural diagram showing the disassembled installation frame and discharge plate;

[0019] Figure 4 yes Figure 2 A magnified view of a portion of region a.

[0020] In the diagram, the correspondence between component names and their corresponding reference numerals is as follows:

[0021] 11. Machine base; 12. Sealed base; 13. Connecting plate; 14. Mounting plate; 21. Sealing shell; 22. Feed pipe; 23. Protective cover; 31. Rotating bracket; 32. Discharge plate; 33. Discharge hole; 34. Mounting frame; 35. Positioning column; 36. Positioning hole; 37. Limiting groove; 38. Limiting block; 41. Extrusion rod; 42. Moving part; 43. Extrusion plate; 44. Lead screw; 45. Moving sleeve; 46. Connecting wheel; 51. Placement plate; 52. Assembly plate; 53. Collection frame; 54. Collection box; 55. Guide plate; 56. Cutting rod; 57. Cutting blade. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0023] Example:

[0024] like Figures 1 to 4 As shown, this utility model provides a pelletizer for PC plastic pellet production, including a base 11 and a sealing shell 21. The base 11 serves as the supporting foundation for the entire equipment, providing a platform for the installation and support of other components. A sealing base 12 and the sealing shell 21 cooperate with each other, forming an extrusion chamber after they are closed. This extrusion chamber is a key space for shaping PC plastic raw materials. A feed pipe 22 on the sealing shell 21 is mainly used for conveying PC plastic raw materials, introducing external plastic raw materials into the extrusion chamber to prepare for subsequent extrusion molding. An extrusion assembly above the base 11, with one end inserted into the extrusion chamber, applies pressure to the plastic raw materials entering the extrusion chamber, causing them to be extruded and shaped through subsequent structures. Specifically, the extrusion assembly can push the plastic raw materials, giving them a certain extrusion force and shape. A rotating bracket 31 driven by a first motor on the base 11 is one of the core components for producing pellets of different specifications. Multiple sets of discharge plates 32 are mounted on the rotating support 31, each with multiple sets of discharge holes 33. These discharge holes 33 have different diameters, corresponding to different specifications of plastic granules. The rotating support 31 is rotated by a first motor, allowing the discharge plates 32 of different specifications to be positioned sequentially at the discharge port, thus enabling the production of plastic granules of different sizes without the need to change the entire mold as in traditional equipment. The waiting area formed between the multiple sets of discharge holes 33 provides space for the cutting action of the pelletizing component, ensuring that the plastic raw material is cut at the appropriate position. The pelletizing component, located on one side of the discharge plate 32 and positioned above the machine base 11, primarily functions to cut the plastic strips extruded from the discharge holes 33 into granules. After the plastic raw material is extruded through the discharge holes 33, it enters the waiting area, where the pelletizing component cuts it into PC plastic granules that meet the requirements. All components work together to complete the entire production process of PC plastic granules from raw material input to molded output, effectively improving production convenience and efficiency. Meanwhile, the device is also equipped with an existing cooling structure, which effectively cools down the extruded high-temperature plastic strip. During the pelletizing process, the plastic strip freshly extruded from the discharge hole 33 is at a high temperature. The cooling structure can quickly reduce its temperature, allowing it to solidify and set quickly, making it easier for the cutting blade to cut it into pellets. In addition, the cooling structure can also prevent problems such as plastic pellet sticking and deformation caused by high temperature, ensuring the appearance quality and dimensional accuracy of the PC plastic pellets, and facilitating subsequent collection and packaging processes.

[0025] The extrusion assembly plays a crucial role in the raw material extrusion process of the pelletizer used in PC plastic pellet production. It mainly consists of an extrusion rod 41 and a moving component 42. One end of the extrusion rod 41 passes through the sealing shell 21 and the sealing base 12, and the other end is equipped with an extrusion plate 43. The extrusion plate 43 is located inside the extrusion chamber and contacts the inner wall of the chamber. During production, the extrusion plate 43 directly acts on the PC plastic raw material inside the extrusion chamber, applying pressure to push the material towards the discharge port, gradually shaping it into the desired form. Multiple sets of connecting plates 13 are provided on the machine base 11, distributed on both sides of the sealing base 12, serving to support and fix the lead screw 44. The lead screw 44 is installed between the multiple sets of connecting plates 13 on the same side, acting as a transmission component to provide power transmission for the movement of the moving component 42. The movable component 42 has movable sleeves 45 at both ends, which are fitted onto the lead screw 44. When the lead screw 44 rotates, the movable sleeves 45 can move along the axial direction of the lead screw 44, thereby driving the movable component 42 connected to it to move. The other end of the extrusion rod 41 is connected to the movable component 42. Thus, the movement of the movable component 42 can drive the extrusion rod 41 and the extrusion plate 43 to move back and forth in the extrusion chamber. By controlling the rotation of the lead screw 44, the position and extrusion force of the extrusion plate 43 can be flexibly adjusted to meet different production needs, ensuring that the PC plastic raw material can be continuously and stably extruded and conveyed, providing conditions for the subsequent pelletizing process.

[0026] The second motor in the extrusion assembly is the power source driving the extrusion action. The mounting plate 14 on the base 11 provides a stable mounting position for the second motor, ensuring its reliable fixation to the equipment. After the second motor is mounted on the mounting plate 14, its shaft end is connected to one of the connecting wheels 46. When the second motor starts running, the rotation of its shaft end is transmitted to the connecting wheels 46. The connecting wheel 46 at one end of the lead screw 44 plays a crucial role in receiving and transmitting power in the entire transmission system. Multiple sets of connecting wheels 46 are connected by a transmission belt, forming a transmission network. When the second motor drives the connected wheel 46 to rotate, the connected wheel 46 transmits power sequentially to the other connecting wheels 46 via the transmission belt, thereby driving all the lead screws 44 to rotate synchronously. The rotation of the lead screw 44 can drive the movable sleeve 45 sleeved on it to move, thereby driving the movable part 42 and the extrusion rod 41 and extrusion plate 43 connected to it to move in the extrusion chamber, realizing the extrusion operation of PC plastic raw materials, ensuring that the extrusion process is stable and continuous, and providing the necessary power support for the molding of PC plastic granules.

[0027] like Figures 2 to 4As shown, the rotating bracket 31 is responsible for supporting and switching different specifications of the discharge plate 32 in the production of PC plastic granules. Multiple sets of mounting frames 34 on it form the basic structure for fixing the discharge plate 32. The mounting frames 34 provide installation space for the discharge plate 32, allowing it to be stably secured within them. Multiple sets of positioning posts 35 on the mounting frames 34 cooperate with corresponding positioning holes 36 on the discharge plate 32. When the discharge plate 32 is engaged with the mounting frame 34, the positioning posts 35 pass through the positioning holes 36. This method restricts the movement of the discharge plate 32 within the mounting frame 34, ensuring that the position of the discharge plate 32 is fixed during production, thus stabilizing the shape of the plastic strip extruded from the discharge hole 33 and preventing granule molding from being affected by the shaking of the discharge plate 32. The sealing shell 21, the limiting groove 37 and limiting block 38 at one end of the sealing base 12, and the spring constitute a limiting device for the rotating bracket 31. The limiting groove 37 provides movement space for the limiting block 38. One end of the spring is connected to the limiting block 38, and the other end is connected to the bottom of the limiting groove 37. When the rotating bracket 31 rotates, one set of mounting frames 34 moves between the two sets of limiting blocks 38. At this time, the limiting block 38, under the action of the spring, blocks the mounting frames 34 and position them, preventing the rotating bracket 31 from rotating excessively. This ensures that the discharge plate 32 on the rotating bracket 31 can accurately stop at the discharge port, allowing the extruded plastic raw material to pass smoothly through the discharge hole 33 on the discharge plate 32, creating conditions for stable cutting by the subsequent pelletizing assembly, and ensuring the continuity and orderliness of the entire PC plastic pellet production process. At the same time, as the rotating bracket 31 continues to rotate, it will overcome the resistance of the limiting block 38. By applying force to the limiting block 38, the spring can be squeezed, thereby breaking free from the restriction of the limiting block 38 and realizing the operation of changing the discharge plate 32.

[0028] The protective cover 23 above the base 11 forms a protective cavity that houses the discharge port, rotating bracket 31, and pelletizing assembly. This cavity prevents external debris from entering and contaminating the PC plastic pellets being produced, thus affecting product quality. Simultaneously, the protective cavity also reduces the transmission of noise generated during pelletizing to the outside. A slot on the protective cover 23 provides space for the mounting frames 34 on the rotating bracket 31. One set of mounting frames 34 passes through the slot and is located outside the protective cover 23. This design allows the rotating bracket 31 to rotate smoothly when switching between different discharge plates 32, without obstruction from the protective cover 23, ensuring smooth operation of the rotating bracket 31 and enabling the pelletizer to flexibly produce PC plastic pellets of different specifications.

[0029] The placement plate 51 and assembly plate 52 on the base 11 cooperate with each other to form a collection area, which is specifically used to collect the finished PC plastic granules. The assembly plate 52 is used to install the pelletizing assembly, ensuring its stability when cutting plastic strips and guaranteeing smooth pelletizing. The collection frame 53 in the collection area is the basic component that supports the collection box 54, providing support for the collection box 54. The collection box 54 adopts a drawer structure, which is convenient for operators to directly pull out for cleaning or replacement after it is full of granules, making operation simple and convenient. The guide plate 55 on the collection frame 53 contacts the discharge plate 32 and forms a guide channel with multiple sets of baffles on one side. The plastic granules squeezed out from the discharge hole 33 of the discharge plate 32 and cut by the pelletizing assembly will slide smoothly into the collection box 54 below along the guide channel, effectively preventing granules from scattering and ensuring that the collection process is carried out in an orderly manner.

[0030] The third motor, mounted on the assembly plate 52, is the power source for the pelletizing assembly. The motor's rotation provides the power required for cutting. One end of the cutting rod 56 is connected to the shaft of the third motor, and the other end is equipped with a cutting blade 57, which transmits the rotational power of the third motor to the cutting blade 57. The cutting blade 57 contacts the discharge plate 32 and is located within its waiting area. When the plastic strip extruded from the discharge hole 33 on the discharge plate 32 enters the waiting area, the cutting blade 57, driven by the third motor and the cutting rod 56, cuts the plastic strip into pellets, completing the PC plastic pellet forming process. The waiting area effectively prevents the cutting blade 57 from obstructing the normal discharge of some of the discharge holes 33, ensuring that the plastic raw material is smoothly extruded from the discharge hole 33 and then cut into pellets by the cutting blade 57.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. A pelletizer for producing PC plastic pellets, comprising a base (11) and a sealing shell (21), characterized in that: A sealing base (12) is provided on the machine base (11), and a sealing shell (21) covers the sealing base (12) and forms a cylindrical extrusion cavity. A feed pipe (22) is provided on the sealing shell (21), and a discharge port is provided at one end of the extrusion cavity. An extrusion assembly is provided above the machine base (11), and one end of the extrusion assembly passes through the extrusion cavity. A rotating bracket (31) driven to rotate by a first motor is provided on the machine base (11), and multiple sets of discharge plates (32) are provided on the rotating bracket (31). Multiple sets of discharge holes (33) are evenly opened on the discharge plates (32), and a waiting area is formed between the multiple sets of discharge holes (33). A pelletizing assembly is also provided above the machine base (11), and the pelletizing assembly is located on one side of the discharge plate (32).

2. The pelletizer for PC plastic pellet production according to claim 1, characterized in that: The extrusion assembly includes an extrusion rod (41) and a moving part (42). One end of the extrusion rod (41) passes through the sealing shell (21) and the sealing base (12) and is provided with an extrusion plate (43). The extrusion plate (43) is located in the extrusion chamber and contacts the inner wall of the extrusion chamber, forming a piston cylinder structure with the extrusion chamber. Multiple sets of connecting plates (13) are provided on the machine base (11). The multiple sets of connecting plates (13) are located on both sides of the sealing base (12). Both sides of the sealing base (12) are provided with lead screws (44). The lead screws (44) are installed between the multiple sets of connecting plates (13) located on the same side. Both ends of the moving part (42) are provided with moving sleeves (45). The moving sleeves (45) are sleeved on the lead screws (44) and are threadedly engaged with the lead screws (44). The other end of the extrusion rod (41) is connected to the moving part (42).

3. A pelletizer for PC plastic pellet production according to claim 2, characterized in that: The extrusion assembly also includes a second motor. One end of the lead screw (44) is provided with a connecting wheel (46). One set of connecting wheels (46) at one end of the lead screw (44) is connected to the connecting wheels (46) at one end of another set of lead screw (44) via a transmission belt. A mounting plate (14) is provided on the machine base (11). The second motor is mounted on the mounting plate (14). The shaft end of the second motor is connected to one of the connecting wheels (46).

4. A pelletizer for PC plastic pellet production according to claim 1, characterized in that: The rotating bracket (31) is provided with multiple sets of mounting frames (34), and the discharge plate (32) is locked in the mounting frame (34); the sealing shell (21) and the sealing base (12) are both provided with a limiting groove (37) at one end, a limiting block (38) is provided in the limiting groove (37), a spring is provided in the limiting groove (37), one end of the spring is connected to the limiting block (38), and the other end is connected to the bottom of the limiting groove (37), and one set of the mounting frame (34) is locked between two sets of the limiting blocks (38).

5. A pelletizer for PC plastic pellet production according to claim 4, characterized in that: The mounting frame (34) is provided with multiple sets of positioning posts (35), and the discharge plate (32) is provided with positioning holes (36) corresponding to the positioning posts (35), and the positioning posts (35) are inserted into the positioning holes (36).

6. A pelletizer for PC plastic pellet production according to claim 5, characterized in that: A protective cover (23) is provided above the base (11), and a protective cavity is formed above the base (11) through the protective cover (23). The discharge port, the rotating bracket (31) and the pelletizing assembly are all located in the protective cavity. A through groove is provided on the protective cover (23), and a set of the mounting frames (34) passes through the through groove and is located outside the protective cover (23).

7. A pelletizer for PC plastic pellet production according to claim 1, characterized in that: A placement plate (51) is provided on the base (11), and an assembly plate (52) is provided on the placement plate (51). A collection area is formed between the base (11), the placement plate (51), and the assembly plate (52). The pelletizing assembly is installed on the assembly plate (52). A collection frame (53) is provided in the collection area, and a collection box (54) is provided on the collection frame (53). The collection box (54) is configured as a drawer structure. A guide plate (55) is provided on the collection frame (53). The guide plate (55) contacts the discharge plate (32). Multiple sets of baffles are provided on one side of the guide plate (55). A guide pipe is formed by the guide plate (55) and the multiple sets of baffles. The collection box (54) is located below the collection box (54).

8. A pelletizer for PC plastic pellet production according to claim 7, characterized in that: The pelletizing assembly includes a third motor and a cutting rod (56). The third motor is mounted on the assembly plate (52). One end of the cutting rod (56) is connected to the shaft end of the third motor. The other end of the cutting rod (56) is provided with a cutting blade (57). The cutting blade (57) contacts the discharge plate (32) and is located in the waiting area on the discharge plate (32).

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