A plastic master batch cutting machine moving knife
By designing a sliding blade and locking mechanism in the plastic masterbatch pelletizer, the problem of the inability to adjust the roller blade structure is solved, achieving the effect of flexible particle size adjustment and reduced operating costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING CHUNDA SCI TECH DEV CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-05
AI Technical Summary
The existing plastic masterbatch pelletizers have a non-adjustable cutter structure, which requires replacing the entire cutter when producing different pellet sizes, increasing long-term operating costs.
Design a motorized cutting blade for plastic masterbatch pelletizing. By attaching a ring rail to the outside of the roller, the groove of the blade slides on the ring rail. Combined with a locking mechanism, the number and spacing of the blades can be flexibly adjusted. When worn, only the blades need to be replaced instead of the entire roller.
It enables cutting with adjustable particle size as needed, reducing long-term operating costs and improving production efficiency and equipment flexibility.
Smart Images

Figure CN224323152U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plastic masterbatch pelletizing technology, and more specifically, relates to a motorized plastic masterbatch pelletizing knife. Background Technology
[0002] In the production and processing of plastic masterbatch, various raw materials are first premixed in a certain proportion to form a uniform mixture. Then, the mixture is fed into an extrusion device, where it is melted and plasticized under high temperature and shearing to form a uniform molten plastic mixture. The molten material is extruded into strips or strips through the die of the extruder, and then rapidly cooled and shaped by a cooling device to solidify and maintain a stable shape. The cooled strips are then conveyed to a pelletizer by a traction device, where they are cut into uniformly sized and regularly shaped granules by a rotating cutter.
[0003] However, the distance between two adjacent blades in the current plastic masterbatch pelletizing machine cannot be flexibly adjusted during use. This means that when producing masterbatch with different particle size specifications, the entire blade must be replaced. When the blades wear out, the entire blade also needs to be replaced, increasing long-term operating costs. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a mechanical blade for plastic masterbatch pelletizing machines. This solves the problem mentioned in the background art that, when using the roller blade structure in current plastic masterbatch pelletizing machines, the entire roller blade needs to be replaced when producing masterbatch of different particle sizes or when the blade body wears out, which increases long-term operating costs.
[0005] To achieve the above objectives, this utility model provides a plastic masterbatch pelletizing motorized knife, which includes:
[0006] rollers;
[0007] A ring rail, the inner side of which is sleeved and connected to the outer side of the roller;
[0008] Multiple blades are arranged circumferentially on the outside of the roller. The bottom of each blade is provided with a groove that can slide on the ring rail to adjust the number of blades on the ring rail and the distance between two adjacent blades according to the size of the masterbatch.
[0009] Multiple locking mechanisms, each of which can lock the slide groove of one of the blades onto the ring rail.
[0010] Preferably, the locking mechanism includes two locking bolts, and the two sides of the blade body are provided with locking threaded holes. The two locking bolts are respectively threaded into the locking threaded holes on both sides, and one end of the two locking bolts can respectively abut against the two sides of the ring rail.
[0011] Preferably, both sides of the ring rail are provided with annular grooves, and one end of each of the two locking bolts is respectively pressed into the two annular grooves.
[0012] Preferably, the bottom of the blade is arc-shaped, and the arc-shaped bottom of the blade is used to fit against the outer side of the roller.
[0013] Preferably, the top of the groove is arc-shaped, and the arc-shaped top of the groove is used to fit against the outer side of the ring rail.
[0014] Preferably, the blade body includes a blade holder and a blade body, and the blade holder and the blade body are detachably connected.
[0015] Preferably, the blade body further includes multiple connecting bolts, a mounting surface is provided on one side of the blade body, multiple mounting holes are arranged on the mounting surface, multiple connecting threaded holes are arranged on the top of the blade holder, the mounting holes extend to the bottom of the blade body, and each mounting hole is connected to a connecting threaded hole by the connecting bolts.
[0016] Preferably, the blade body further includes a rubber pad, the rubber pad having a plurality of socket holes, the socket holes extending to form rubber sleeves, the rubber pad being disposed between the blade holder and the blade body, and the plurality of rubber sleeves being respectively fitted into the plurality of mounting holes.
[0017] Preferably, the cutter body is inclined relative to the radial line of the roller.
[0018] Preferably, the roller and the ring rail are integrally formed.
[0019] This utility model provides a mechanical pelletizer for cutting plastic masterbatch. Its advantages are as follows: the inner side of the ring rail of the mechanical pelletizer is sleeved and connected to the outer side of the roller. Multiple blades slide circumferentially on the ring rail via their grooves. The number of blades and the distance between two blades can be flexibly adjusted as needed to achieve cutting of different particle sizes. Each locking mechanism can lock the groove of one blade onto the ring rail. After adjustment, the blade can be locked onto the ring rail by the locking mechanism to prevent blade movement. Since the groove of the blade can disengage from the ring rail, only the blade needs to be replaced when it wears out, without replacing the entire mechanical pelletizer. Therefore, this mechanical pelletizer significantly reduces long-term operating costs.
[0020] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description
[0021] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.
[0022] Figure 1 A side view of a plastic masterbatch pelletizing motorized blade according to an embodiment of the present invention is shown.
[0023] Figure 2 It shows Figure 1 Enlarged structural diagram at point A in the middle;
[0024] Figure 3 This diagram shows a schematic front view of the blade body of a plastic masterbatch pelletizing motorized blade according to an embodiment of the present invention.
[0025] Figure 4 A schematic diagram of the roller structure of a plastic masterbatch pelletizing motor blade according to an embodiment of the present invention is shown.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Roller; 2. Ring rail; 3. Tool body; 31. Tool holder; 32. Cutting edge; 4. Slide groove; 5. Locking bolt; 6. Connecting bolt; 7. Rubber pad; 8. Annular groove. Detailed Implementation
[0028] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0029] like Figure 1 and Figure 4 As shown, this utility model provides a plastic masterbatch pelletizing motorized knife, which includes:
[0030] Roller 1;
[0031] Ring rail 2, the inner side of ring rail 2 is sleeved and connected to the outer side of roller 1;
[0032] Multiple cutter bodies 3 are arranged in a circular pattern on the outside of the roller 1. The bottom of the cutter body 3 is provided with a sliding groove 4, which can slide on the ring rail 2 to adjust the number of cutter bodies 3 on the ring rail 2 and the distance between two adjacent cutter bodies 3 according to the size of the masterbatch.
[0033] Multiple locking mechanisms, each capable of locking the slide of a cutter body 3 onto the ring rail 2.
[0034] Specifically, to address the problem that current plastic masterbatch pelletizers require replacing the entire roller cutter when producing masterbatch of different particle sizes or when the cutter wears out, increasing long-term operating costs, this invention provides a mechanical pelletizer cutter. The roller 1 and ring rail 2 of this mechanical pelletizer are integrally formed. The inner side of the ring rail 2 is sleeved and connected to the outer side of the roller 1. Multiple cutter bodies 3 have sliding grooves 4 that slide circumferentially on the ring rail 2. The number of cutter bodies 3 and the distance between two cutter bodies 3 can be flexibly adjusted as needed to achieve cutting of different particle sizes. Each locking mechanism can lock the groove 4 of one cutter body 3 onto the ring rail 2. After adjustment, the cutter body 3 can be locked onto the ring rail 2 through the locking mechanism to prevent movement. Since the groove 4 of the cutter body 3 can disengage from the ring rail 2, only the cutter body 3 needs to be replaced when it wears out, eliminating the need to replace the entire mechanical pelletizer cutter. Therefore, this mechanical pelletizer cutter significantly reduces long-term operating costs.
[0035] Preferably, the locking mechanism includes two locking bolts 5, and the two sides of the blade body 3 are provided with locking threaded holes. The two locking bolts 5 are respectively threaded into the locking threaded holes on both sides, and one end of the two locking bolts 5 can be pressed against the two sides of the ring rail 2.
[0036] Specifically, when one end of each of the two locking bolts 5 is pressed against the two sides of the ring rail 2, the cutter body 3 can be locked on the ring rail 2 to prevent the cutter body 3 from moving.
[0037] Preferably, both sides of the ring rail 2 are provided with annular grooves 8, and one end of each of the two locking bolts 5 is respectively pressed into the two annular grooves 8.
[0038] Specifically, the annular groove 8 has an anti-slip surface inside, which can be a corrugated surface. The annular groove 8 can prevent one end of the locking bolt 5 from disengaging from the ring rail 2, and the anti-slip surface can prevent one end of the bolt 5 from sliding between the ring rail 2.
[0039] Preferably, the bottom of the cutter body 3 is arc-shaped, and the arc-shaped bottom of the cutter body 3 is used to fit against the outer side of the roller 1.
[0040] Specifically, the contact area between the cutter body 3 and the roller 1 has been increased, making the connection between the cutter body 3 and the roller 1 more seamless and improving the stability of the connection.
[0041] Preferably, the top of the groove 4 is arc-shaped, and the arc-shaped top of the groove 4 is used to fit against the outer side of the ring rail 2.
[0042] Specifically, the contact area between the slide groove 4 and the ring rail 2 is increased, making the connection between the slide groove 4 and the ring rail 2 more closely fit and improving the stability of the connection.
[0043] like Figure 2 and Figure 3 As shown, preferably, the blade body 3 includes a blade holder 31 and a blade body 32, which are detachably connected.
[0044] Specifically, when the blade body 32 becomes worn, it is not necessary to replace the entire blade body 3; only the blade body 32 needs to be replaced, which can further reduce operating costs.
[0045] Preferably, the blade body 3 further includes a plurality of connecting bolts 6, a mounting surface is provided on one side of the blade body 32, a plurality of mounting holes are arranged on the mounting surface, a plurality of connecting threaded holes are arranged on the top of the blade holder 31, the mounting holes extend to the bottom of the blade body 32, and each mounting hole is connected to a connecting threaded hole by a connecting bolt 6.
[0046] Specifically, the connecting bolt 6 is used to achieve a detachable connection between the tool holder 31 and the cutting edge body 32.
[0047] Preferably, the blade body 3 further includes a rubber pad 7, which has multiple socket holes. The socket holes extend to form rubber sleeves. The rubber pad 7 is disposed between the blade holder 31 and the blade body 32, and the multiple rubber sleeves are respectively fitted into the multiple mounting holes.
[0048] Specifically, the convex rubber sleeve 7 can buffer the blade body 32, preventing damage to the blade body 32 due to collision, and improving its service life and safety.
[0049] Preferably, the cutter body 3 is inclined relative to the radial line of the roller 1.
[0050] Specifically, the tilting setting of the blade body 3 can significantly improve cutting quality and efficiency, and can also effectively reduce the wear and maintenance costs of the blade body 3, thereby improving overall production efficiency.
[0051] Preferably, the roller 1 and the ring rail 2 are integrally formed.
[0052] In summary, when the plastic masterbatch pelletizing motorized knife of this application is implemented, the grooves 4 of multiple blades 3 slide circumferentially on the ring rail 2. The number of blades 3 and the distance between two blades 3 can be flexibly adjusted as needed to achieve cutting of different particle sizes. After adjustment, the blades 3 can be locked on the ring rail 2 by a locking mechanism to prevent the blades 3 from moving. Since the grooves 4 of the blades 3 can be disengaged from the ring rail 2, when the blades 3 are worn, only the blades 3 need to be replaced, without replacing the entire pelletizing motorized knife. Thus, the pelletizing motorized knife significantly reduces long-term operating costs.
[0053] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A motorized blade for cutting plastic masterbatch pellets, characterized in that, The pelletizing motorized blade includes: rollers; A ring rail, the inner side of which is sleeved and connected to the outer side of the roller; Multiple blades are arranged circumferentially on the outside of the roller. The bottom of each blade is provided with a groove that can slide on the ring rail to adjust the number of blades on the ring rail and the distance between two adjacent blades according to the size of the masterbatch. Multiple locking mechanisms, each of which can lock the slide groove of one of the blades onto the ring rail.
2. The motorized blade for cutting plastic masterbatch according to claim 1, characterized in that, The locking mechanism includes two locking bolts. Locking threaded holes are provided on both sides of the blade body. The two locking bolts are respectively threaded into the locking threaded holes on both sides. One end of each locking bolt can be pressed against both sides of the ring rail.
3. The motorized blade for cutting plastic masterbatch according to claim 2, characterized in that, Both sides of the ring rail are provided with annular grooves, and one end of each of the two locking bolts is respectively pressed into the two annular grooves.
4. The motorized blade for cutting plastic masterbatch according to claim 1, characterized in that, The bottom of the blade is arc-shaped, and the arc-shaped bottom of the blade is used to fit against the outer side of the roller.
5. The motorized blade for cutting plastic masterbatch according to claim 1, characterized in that, The top of the groove is arc-shaped, and the arc-shaped top of the groove is used to fit against the outer side of the ring rail.
6. The motorized blade for cutting plastic masterbatch according to claim 1, characterized in that, The blade body includes a blade holder and a blade body, which are detachably connected.
7. The motorized blade for cutting plastic masterbatch according to claim 6, characterized in that, The blade body also includes multiple connecting bolts. One side of the blade body is provided with a mounting surface, and the mounting surface is provided with multiple mounting holes. The top of the blade holder is provided with multiple threaded holes, and the mounting holes extend to the bottom of the blade body. Each mounting hole is connected to one of the threaded holes by the connecting bolts.
8. The motorized blade for cutting plastic masterbatch according to claim 7, characterized in that, The blade body also includes a rubber pad, which has multiple socket holes. The socket holes extend to form rubber sleeves. The rubber pad is disposed between the blade holder and the blade body, and the multiple rubber sleeves are respectively fitted into the multiple mounting holes.
9. The motorized blade for cutting plastic masterbatch according to claim 1, characterized in that, The cutter body is inclined relative to the radial line of the roller.
10. A motorized blade for cutting plastic masterbatch according to claim 1, characterized in that, The roller and the ring rail are integrally formed.