Dual-drive plastic granulator

Through the coordinated control of feeding and cutting knife of the dual drive system, the problems of low cutting efficiency and poor size adaptability of existing plastic pelletizers are solved, and flexible cutting of plastic pellets of different sizes is achieved.

CN223369767UActive Publication Date: 2025-09-23XIAMEN NGAI HING HONG PLASTIC MATERIALS CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421422129.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-20
Publication Date
2025-09-23
Estimated Expiration
2034-06-20

AI Technical Summary

Technical Problem

Existing plastic pelletizers have low pelletizing efficiency and are difficult to adapt to cut plastic pellets of different sizes.

Method used

The dual drive system is adopted to control the speed and position of the feed roller and the movable cutter respectively through the feed drive and the cutter drive. The cutting of plastic pellets of different sizes can be achieved by combining the coordinated cutting of the static cutter and the movable cutter.

Benefits of technology

It can realize the cutting of plastic pellets of different sizes according to demand, thus improving pelletizing efficiency and adaptability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223369767U_ABST
    Figure CN223369767U_ABST
Patent Text Reader

Abstract

The utility model relates to the field of pelletizing equipment, and provides a dual-drive plastic pelletizer which comprises a machine table, a pelletizing cavity is formed in the machine table, and the pelletizing cavity communicates with a feeding port and a discharging port; the feeding driving part is installed on the machine table, and the driving end of the feeding driving part penetrates through the machine table to enter the grain cutting cavity; the feeding roller is movably connected with the inner wall of the pelletizing cavity, and is connected with the driving end of the feeding driving part; the elastic roller is connected with the inner wall of the pelletizing cavity and is close to the feeding roller; the fixed cutter is mounted on the inner wall of the pelletizing cavity, and the movable cutter is rotatably and movably connected with the inner wall of the pelletizing cavity. The plastic particle cutting device has the effect that plastic particles of different sizes can be cut in a matched mode.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present application relates to the field of pelletizing equipment, and in particular to a dual-drive plastic pelletizer. Background Art

[0002] In the process of plastic granulation, a plastic pelletizer is required to insert the strip plastic raw materials into the pelletizer. The pelletizer is equipped with a built-in cutter to cut the strip plastic raw materials into suitable sizes.

[0003] Currently, plastic pelletizers are widely used in the plastic processing industry, but most existing pelletizers have low pelletizing efficiency and are difficult to adapt to cut plastic pellets of different sizes. Summary of the Invention

[0004] In order to improve the above problems, the present application provides a dual-drive plastic pelletizer.

[0005] The dual-drive plastic pelletizer provided in this application adopts the following technical solution:

[0006] A dual-drive plastic pelletizer comprises a machine table, wherein a pelletizing chamber is provided inside the machine table, and the pelletizing chamber is connected to a feed port and a discharge port; a feed drive member, wherein the feed drive member is mounted on the machine table, and a drive end thereof passes through the machine table and enters the pelletizing chamber; a feed roller, wherein the feed roller is movably connected to the inner wall of the pelletizing chamber and is connected to the drive end of the feed drive member; an elastic roller, wherein the elastic roller is connected to the inner wall of the pelletizing chamber and is close to the feed roller; a stationary cutter and a movable cutter, wherein the stationary cutter is mounted on the inner wall of the pelletizing chamber and the movable cutter is rotatably connected to the inner wall of the pelletizing chamber; and a cutter drive member, wherein the cutter drive member is mounted on the machine table, and a drive end thereof is connected to the movable cutter.

[0007] By adopting the above technical solution, the plastic raw material passes through between the feed roller and the elastic roller, and the feed drive drives the feed roller to rotate, so that the plastic raw material is pulled into the pelletizing chamber and moved to the static cutter and the movable cutter. The cutter drive drives the movable cutter to rotate, so that when the blade of the movable cutter rotates to the static cutter, it cooperates with the static cutter to cut the plastic raw material into pellets. The speed at which the feed roller is driven by the feed drive determines the speed and length of the plastic raw material extending into the pelletizing chamber, and the speed at which the movable cutter is driven by the cutter drive determines the size of the plastic raw material pellets. Therefore, under the independent driving action of the feed drive and the cutter drive, the driving speed can be adjusted according to the demand to achieve the effect of adapting to cutting out plastic pellets of different sizes.

[0008] Optionally, the static cutter includes a cutter seat, an adjusting knife and a fixing part; a threaded hole is provided on the cutter seat; a long hole is provided on the adjusting knife; the fixing part is provided with an external thread, and the fixing part passes through the long hole and is screwed to the threaded hole.

[0009] By adopting the above technical solution, different plastic raw materials have different thicknesses or coarsenesses, so the distance between the regulating knife and the movable cutter can be adjusted through the long strip hole and the fixing portion to perform adaptive pelletizing.

[0010] Optionally, the movable cutter includes a rotating shaft and a rotating blade portion; the rotating shaft is movably connected to the inner wall of the cutting chamber and is connected to the cutter driving member; the rotating blade portion is annular, and a plurality of blades are arranged along the annular direction.

[0011] By adopting the above technical solution, the speed at which the knife driving member drives the rotating shaft determines the rotation speed of the rotating cutter part. The faster the rotating cutter part rotates, the shorter the interval between any cutter and the static cutter, thereby making the size of the cut plastic pellets smaller. Therefore, the required molding size of the plastic pellets can be controlled according to the cutter driving member.

[0012] Optionally, anti-blocking parts are provided at the movable connection points between the feed roller and the inner wall of the pelletizing chamber, and at the movable connection points between the rotating shaft and the inner wall of the pelletizing chamber.

[0013] By adopting the above technical solution, the anti-blocking member is used to block the movable connection points of the feed roller and the rotating shaft, so as to prevent the plastic pellets after pelletizing from being too small and being stuck in the gap, thereby affecting the rotation speed and pelletizing efficiency.

[0014] Optionally, the anti-blocking member is inclined away from the inner wall of the pelletizing chamber and has a cone shape.

[0015] By adopting the above technical solution, the cut plastic pellets fall on the anti-blocking part and are affected by the conical inclined surface and fall without blocking the feed roller or the movable connection point of the rotating part, further ensuring the rotation stability of the feed roller and the rotating shaft.

[0016] Optionally, the surface of the feed roller is provided with anti-slip grooves.

[0017] By adopting the above technical solution, the anti-slip pattern can increase the friction between the feed roller and the plastic raw material, reducing the occurrence of slipping and other phenomena that lead to inaccurate pelletizing size.

[0018] Optionally, the machine further includes a top cover; the top cover is movably connected to the machine and covers the cavity opening of the pelletizing cavity.

[0019] By adopting the above technical solution, the top cover is used to cover the pelletizing cavity, and at the same time, the cavity opening of the pelletizing cavity can be easily opened, so that the components in the pelletizing cavity can be inspected and repaired.

[0020] Optionally, a slope is provided at the opening of the pelletizing cavity, one end of the elastic roller is movably connected to the inner wall surface of the pelletizing cavity, and the other end is connected to the slope of the opening of the pelletizing cavity through the slope.

[0021] By adopting the above technical solution, the movable connection of the elastic roller can facilitate the opening of the elastic roller, so that when the elastic roller is easily worn out due to long-term use, the elastic roller can be opened for easy maintenance or replacement, and the elastic roller can be clamped by the inclined surface to prevent the elastic roller from pressing the feed roller so that the plastic raw material is not overly pressurized and broken.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The plastic raw material passes between the feed roller and the elastic roller. The feed drive drives the feed roller to rotate, so that the plastic raw material is pulled into the pelletizing chamber and moves to the static cutter and the movable cutter. The cutter drive drives the movable cutter to rotate. When the blade of the movable cutter rotates to the static cutter, it cooperates with the static cutter to cut the plastic raw material into pellets. The speed at which the feed roller is driven by the feed drive determines the speed and length of the plastic raw material extending into the pelletizing chamber, and the speed at which the movable cutter is driven by the cutter drive determines the size of the pellets cut from the plastic raw material. Therefore, under the independent driving action of the feed drive and the cutter drive, the driving speed can be adjusted according to demand to achieve the effect of adapting to cutting out plastic pellets of different sizes.

[0024] 2. Different plastic raw materials have different thickness or coarseness, so the distance between the knife and the moving cutter can be adjusted through the long hole and the fixed part to adapt to the pelletizing;

[0025] 3. The speed of the rotary shaft driven by the knife driver determines the rotation speed of the rotary cutter unit. The faster the rotary cutter unit rotates, the shorter the interval between any cutter and the static cutter, and the smaller the size of the cut plastic pellets. Therefore, the required molding size of the plastic pellets can be controlled according to the cutter driver.

[0026] 4. The movable connection of the elastic roller can be easily opened, so that when the elastic roller is easily worn out due to long-term use, the elastic roller can be opened for easy maintenance or replacement, and the elastic roller can be clamped by the inclined surface to prevent the elastic roller from pressing the feed roller tightly, causing the plastic raw material to be overly pressurized and broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of a pelletizer from a first perspective in one embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the three-dimensional structure of the pelletizer from a second perspective in some embodiments of the present application;

[0029] Figure 3This is a schematic diagram of a first three-dimensional structure of a machine in some embodiments of the present application;

[0030] Figure 4 This is a schematic diagram of a second three-dimensional structure of the machine in some embodiments of the present application;

[0031] Figure 5 This is a schematic diagram of a third three-dimensional structure of the machine in some embodiments of the present application;

[0032] The marks in the accompanying drawings are: 1. Machine table, 11. Cutting chamber, 2. Feed drive, 3. Feed roller, 4. Elastic roller, 5. Static cutter, 51. Cutter seat, 52. Adjusting knife, 521. Long hole, 53. Fixed part, 6. Moving cutter, 61. Rotating shaft, 62. Rotating blade part, 7. Cutter drive, 8. Anti-blocking part, 9. Top cover. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the information disclosed in this application. The present application can also be implemented or applied through different specific embodiments. The details in this application can also be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless they conflict.

[0034] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0035] In the description of this application, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this application, as well as features of different embodiments or examples, unless otherwise contradictory.

[0036] Furthermore, the terms "first" and "second" are used solely to indicate a target and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the context of this application, "plurality" means two or more, unless otherwise specifically defined.

[0037] Throughout this specification, when a device is said to be "connected" to another device, this includes not only "direct connection" but also "indirect connection" with other elements interposed therebetween. Furthermore, when a device is said to "include" a certain component, unless otherwise stated, this does not exclude the inclusion of other components but rather implies that the device may include other components.

[0038] The following is combined with Figure 1 -Attached Figure 5 , further details of this application are given.

[0039] The embodiment of the present application discloses a dual-drive plastic pelletizer.

[0040] A dual drive plastic pelletizer, reference Figure 1 and Figure 2 As shown, the machine 1 includes a pelletizing chamber 11 provided inside the machine 1, and the pelletizing chamber 11 is connected to a feed port and a discharge port. The machine 1 is a rectangular box structure, and a pelletizing chamber 11 is provided on the top surface, and the pelletizing chamber 11 extends downward. The feed port and the discharge port provided on the pelletizing chamber 11 are both provided with guide plates. The guide plate at the feed port is used to provide support for the plastic raw material when it extends into the feed port, and the guide plate at the discharge port is used to provide a guide channel for the plastic pellets to escape from the pelletizing chamber 11 after the plastic raw material is pelletized.

[0041] The feed drive 2 is installed on the machine 1, and the driving end passes through the machine 1 and enters the pelletizing chamber 11. The feed drive 2 can adopt a feed drive motor, which can be specifically installed outside the machine 1. The driving end of the drive motor can pass through the machine 1 and extend into the pelletizing chamber 11 to provide driving force for feeding.

[0042] The feed roller 3 is connected to the driving end of the feed drive 2 and is located in the pelletizing cavity 11 at the feed port. The feed roller 3 can be a metal roller. The two ends of the feed roller 3 are movably connected to the inner wall of the pelletizing cavity 11 and are connected to the driving end of the feed drive 2. It can pass through the machine 1 and extend into the outside of the machine 1 to be connected to the feed drive 2, or the driving end of the feed drive 2 can pass through the machine 1 and extend into the pelletizing cavity 11, so that the feed roller 3 is connected to the driving end of the feed drive 2.

[0043] The elastic roller 4 is connected to the inner wall of the pelletizing chamber 11 and is close to the feed roller 3. The elastic roller 4 is located above the feed roller 3, and the elastic roller 4 includes a mounting frame and an elastic rotating roller. The material of the rotating roller can be plastic material with greater friction. The rotating roller is sleeved on the mounting frame and can roll along the surface of the mounting frame. The rotating roller is close to the feed roller 3.

[0044] When the plastic raw material extends into the pelletizing chamber 11 from the feed port, it needs to pass between the feed roller 3 and the elastic roller 4. The feed drive 2 drives the feed roller 3 to rotate, and the plastic raw material contacts the feed roller 3 and the elastic roller 4, so that the plastic raw material is affected by friction and moves toward the inside of the pelletizing chamber 11 following the feed roller 3 and the elastic roller 4.

[0045] The static cutter 5 and the dynamic cutter 6 are arranged such that the static cutter 5 is mounted on the inner wall of the pelletizing chamber 11 and the dynamic cutter 6 is rotatably connected to the inner wall of the pelletizing chamber 11. The installation position of the static cutter 5 is fixed, the blade direction is fixed, and the dynamic cutter 6 is rotatable. Therefore, when the plastic raw material contacts the static cutter 5 and the dynamic cutter 6, the plastic raw material will be separated and pelletized, so that the plastic pellets are formed, and the cut plastic pellets can fall out of the machine 1 from the discharge port.

[0046] The cutter drive 7 is installed on the machine 1, and the drive end is connected to the movable cutter 6. The cutter drive 7 can adopt a cutter drive motor, and the cutter drive 7 is used to provide a driving force for the rotation of the movable cutter 6, so that the movable cutter 6 can cooperate with the static cutter 5 to perform pelletizing.

[0047] The feed drive 2 and the cutter drive 7 are driven separately, and the driving force is adjusted automatically according to demand, so that the feeding speed of the plastic raw material and the rotation speed of the movable cutter 6 can be changed automatically.

[0048] Specifically, the plastic raw material enters the pelletizing chamber 11 through the feed port, and passes between the feed roller 3 and the elastic roller 4 when entering the pelletizing chamber 11. The feed drive 2 drives the feed roller 3 to rotate, so that the plastic raw material is pulled into the pelletizing chamber 11 and moves to the static cutter 5 and the dynamic cutter 6. The cutter drive 7 drives the dynamic cutter 6 to rotate, so that when the blade of the dynamic cutter 6 rotates to the static cutter 5, it cooperates with the static cutter 5 to pelletize the plastic raw material. The speed at which the feed roller 3 is driven by the feed drive 2 determines the speed and length of the plastic raw material extending into the pelletizing chamber 11, and the speed at which the dynamic cutter 6 is driven by the cutter drive 7 determines the size of the pellets of the plastic raw material. Therefore, under the independent driving action of the feed drive 2 and the cutter drive 7, the driving speed can be adjusted according to demand to achieve the effect of adapting to cutting out plastic pellets of different sizes.

[0049] In some embodiments, reference Figure 3 As shown, the static cutter 5 includes a cutter seat 51, an adjusting knife 52 and a fixing portion 53; a threaded hole is provided on the cutter seat 51; a long hole 521 is provided on the adjusting knife 52; the fixing portion 53 is provided with an external thread, and the fixing portion 53 passes through the long hole 521 and is screwed to the threaded hole, and the fixing portion 53 can be fixed with a screw.

[0050] The fixing portion 53 can pass through the elongated hole 521. After the fixing portion 53 passes through the elongated hole 521, the adjusting knife 52 can change its position through the elongated hole 521 and the fixing portion 53, so that the adjusting knife 52 is closer to the movable cutter 6 or farther away from the movable cutter 6. After the adjustment is completed, the fixing portion 53 is tightened into the threaded hole, thereby achieving the purpose of adapting to the pelletizing of plastic raw materials of different thicknesses or sizes.

[0051] That is, different plastic raw materials have different thicknesses or coarsenesses, and thus the distance between the regulating knife 52 and the movable cutter 6 can be adjusted to perform adaptive pelletizing.

[0052] In some embodiments, reference Figure 3 As shown, some parts are hidden in the figure. The movable cutter 6 includes a rotating shaft 61 and a rotating blade portion 62; the rotating shaft 61 is movably connected to the inner wall of the pelletizing chamber 11 and is connected to the cutter driving member 7; the rotating blade portion 62 is annular and has a plurality of blades arranged along the annular direction. The rotating shaft 61 can be connected to the driving end of the cutter driving member 7 to provide a rotating force. During the rotation of the rotating shaft 61, the rotating blade portion 62 rotates along with it. At the same time, the rotating blade portion 62 is composed of a plurality of blades. Therefore, when any blade rotates to the static cutter 5, it can cooperate with the static cutter 5 to cut the plastic raw material into pellets. The rotation speed of the rotating cutter portion is determined by the speed at which the cutter driving member 7 drives the rotating shaft 61. The faster the rotating cutter portion, the shorter the interval between any cutter and the static cutter 5, thereby cutting and molding plastic pellets. Therefore, the required molding size of the plastic pellets can be controlled according to the cutter driving member 7.

[0053] At the same time, it will also be affected by the driving speed of the feed drive 2. The faster the feed drive 2 drives the feed roller 3, the longer the length of the unit plastic raw material extending into the static cutter 5, and the larger the plastic particles cut out. Conversely, the slower the rotation speed of the feed roller 3, the shorter the length of the unit plastic raw material extending into the static cutter 5, making the cut plastic particles smaller. Therefore, the dual drive adjustment of the feed drive 2 and the cutter drive 7 is used to adapt to the cutting of plastic particles of different sizes.

[0054] In some embodiments, reference Figure 4 As shown, the movable connection points between the feed roller 3 and the inner wall of the pelletizing chamber 11, as well as the movable connection points between the rotating shaft 61 and the inner wall of the pelletizing chamber 11, are both provided with anti-blocking parts 8. The anti-blocking parts 8 can be anti-blocking rings. The anti-blocking parts 8 are used to block the movable connection points between the feed roller 3 and the rotating shaft 61 to prevent the plastic pellets after pelletizing from being too small and being stuck in the gaps, thereby affecting the rotation speed and pelletizing efficiency.

[0055] Furthermore, the anti-blocking member 8 is inclined in a direction away from the inner wall of the pelletizing chamber 11 and is in a conical shape, that is, the size of the anti-blocking member 8 close to the movable connection point is larger than the size of the anti-blocking member 8 away from the movable connection point, so that even if the plastic pellets after pelletizing fall on the anti-blocking member 8, they will be affected by the conical inclined surface and fall, and will not be able to block the feed roller 3 or the movable connection point of the rotating part, further ensuring the rotation stability of the feed roller 3 and the rotating shaft 61.

[0056] In some embodiments, reference Figure 4 As shown, the surface of the feed roller 3 is provided with anti-slip grooves, which can increase the friction between the feed roller 3 and the plastic raw material, so that the plastic raw material can stably extend into the static cutter 5 and the dynamic cutter 6 as the feed roller 3 rotates during feeding, reducing the occurrence of slipping and other phenomena that lead to inaccurate pelletizing size.

[0057] In some embodiments, reference Figure 4 As shown, the machine 1 also includes a top cover 9; the top cover 9 is movably connected to the machine 1 and covers the opening of the pelletizing chamber 11. The top cover 9 is used to cover the pelletizing chamber 11, and can also conveniently open the opening of the pelletizing chamber 11, so that the components in the pelletizing chamber 11 can be inspected and repaired, such as when the static cutter 5 or the dynamic cutter 6 needs to be replaced or maintained, the feed roller 3 needs to be replaced or maintained, and there are too many plastic pellets in the pelletizing chamber 11 and blockage occurs. The movably connected top cover 9 to the machine 1 can be hinged to facilitate opening or closing the top cover 9.

[0058] The top cover 9 is also provided with an insertion hole, and the top surface of the machine 1 is provided with a screw hole. When the top cover 9 closes the pelletizing chamber 11, the insertion hole and the screw hole coincide with each other, and then the machine 1 can be fixed by locking with bolts.

[0059] For further reference, Figure 5 As shown (the feed port is hidden), an inclined surface is provided at the opening of the pelletizing chamber 11, one end of the elastic roller 4 is movably connected to the pelletizing chamber 11, and the other end is clamped with the opening of the pelletizing chamber 11 through the inclined surface. When the elastic roller 4 adopts a mounting bracket and an elastic rotating roller, the mounting bracket is movably connected to the inner wall of the pelletizing chamber 11, so that the elastic roller 4 can be opened along the movable connection point. When the top cover 9 is opened at the same time, the pelletizing chamber 11 can be fully opened, and the feed roller 3, the static cutter 5 and the dynamic cutter 6 are fully exposed for maintenance.

[0060] The advantage of the movable connection of the elastic roller 4 is that the elastic roller 4 can be easily opened. Since the elastic roller 4 is made of plastic or other materials, it is easy to wear out after long-term use. After the elastic roller 4 is opened, it is easy to repair or replace the elastic roller 4.

[0061] The opening of the pelletizing chamber 11 is provided with an inclined surface, mainly to facilitate the fixation of the elastic roller 4. After the elastic roller 4 is retracted into the pelletizing chamber 11 along the movable connection point, both ends can be stuck on the inclined surface, so that the elastic roller 4 will not directly and completely enter the pelletizing chamber 11, thereby avoiding the situation where the elastic roller 4 presses the feed roller 3, causing the plastic raw material to be overly pressurized and broken.

[0062] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A dual-drive plastic pelletizer, characterized in that: The invention comprises a machine (1), wherein a pelletizing chamber (11) is provided inside the machine (1), and the pelletizing chamber (11) is connected to a feed port and a discharge port; a feed drive member (2), wherein the feed drive member (2) is installed on the machine (1), and a drive end thereof passes through the machine (1) and enters the pelletizing chamber (11); a feed roller (3), wherein the feed roller (3) is movably connected to the inner wall of the pelletizing chamber (11) and is connected to the drive end of the feed drive member (2); an elastic roller (4), wherein the elastic roller (4) is connected to the inner wall of the pelletizing chamber (11) and is close to the feed roller (3); a stationary cutter (5) and a movable cutter (6), wherein the stationary cutter (5) is installed on the inner wall of the pelletizing chamber (11), and the movable cutter (6) is rotatably connected to the inner wall of the pelletizing chamber (11); A cutter drive member (7), the cutter drive member (7) is installed on the machine (1), and the drive end is connected to the movable cutter (6); the static cutter (5) includes a cutter seat (51), an adjusting knife (52) and a fixing portion (53); the cutter seat (51) is provided with a threaded hole; the adjusting knife (52) is provided with a long hole (521); the fixing portion (53) is provided with an external thread, and the fixing portion (53) passes through the long hole (521) and is screwed to the threaded hole; the distance between the adjusting knife (52) and the movable cutter (6) is adjusted to perform adaptive pelletizing; the cavity opening of the pelletizing cavity (11) is provided with an inclined surface, and the elastic roller (4) adopts a mounting frame and an elastic rotating roller, one end of the mounting frame is movably connected to the inner wall surface of the pelletizing cavity (11), and the other end is connected to the cavity opening inclined surface of the pelletizing cavity (11) through the inclined surface.

2. A dual-drive plastic pelletizer according to claim 1, characterized in that: The movable cutter (6) comprises a rotating shaft (61) and a rotating blade portion (62); the rotating shaft (61) is movably connected to the inner wall of the pelletizing chamber (11) and is connected to the cutter driving member (7); the rotating blade portion (62) is annular and has a plurality of blades arranged along the annular direction.

3. A dual-drive plastic pelletizer according to claim 2, characterized in that: The movable connection point between the feed roller (3) and the inner wall of the pelletizing chamber (11), as well as the movable connection point between the rotating shaft (61) and the inner wall of the pelletizing chamber (11), are both provided with anti-blocking parts (8).

4. A dual-drive plastic pelletizer according to claim 3, characterized in that: The anti-blocking member (8) is inclined in a direction away from the inner wall of the pelletizing chamber (11) and is in a cone shape.

5. The dual-drive plastic pelletizer according to claim 1, characterized in that: The surface of the feed roller (3) is provided with anti-slip grooves.

6. A dual-drive plastic pelletizer according to claim 1, characterized in that: The machine (1) further comprises a top cover (9); the top cover (9) is movably connected to the machine (1) and covers the opening of the pelletizing cavity (11).