Granulator for producing modified plastic granules
By introducing limiting, clearing, and guiding units into the pelletizer, the problems of swaying and adhesion at the cutting end of plastic strips were solved, achieving uniform cutting and high-quality production of plastic pellets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-12
- Publication Date
- 2026-03-31
AI Technical Summary
Existing pelletizers lack limiting mechanisms when cutting plastic strips, causing the cut ends of the plastic strips to wobble easily, affecting the uniformity of particle size and the regularity of the cut surface. This is especially true for plastic strips made of modified materials with added fibers, where the cutting is inaccurate and the cut plastic particles tend to stick together.
A pelletizer for producing modified plastic pellets was designed, comprising a limiting unit, a cleaning unit, and a guiding unit. The limiting unit restricts the swing of the plastic strip through a friction wheel and a limiting channel. The cleaning unit removes water and impurities from the plastic strip through a blower. The guiding unit ensures that the plastic strip accurately enters the limiting channel.
It achieves uniform cutting and regular shape of plastic granules, reduces the impact of impurities and water, and ensures the stability of the cutting process and the accuracy of subsequent screening.
Smart Images
Figure CN224060199U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of dicer, specifically relates to a dicer for modified plastic particle production. BACKGROUND
[0002] The preparation of plastic particles mainly includes the following processes: firstly, the raw materials are stirred to be uniformly mixed, then the raw materials are added into an extruder, the plastic strip is melted and formed by the extruder, the plastic strip is cooled and solidified to complete the shaping, and finally the plastic strip is cut into particles by a dicer.
[0003] The conventional dicer usually mainly includes a conveying belt, a cutting table and a cutting roller arranged in sequence, the plastic strip is moved to the cutting table under the driving of the conveying belt, and the cutting roller rotates to cut the plastic strip at the edge of the cutting table to form plastic particles. However, in the actual production process, the plastic strip at the edge of the cutting table lacks limiting, that is, the cutting end of the plastic strip is prone to swing under the action of the external force applied by the cutting roller, which not only affects the uniformity of the particle size, but also causes the cutting surface to be irregular, thereby affecting the overall quality of the plastic particles. In addition, especially for the plastic strip added with a fiber type modified material, the lack of limiting of the cutting end also causes the fiber to be unable to be accurately cut off, and burrs are formed at the section. SUMMARY
[0004] Therefore, the utility model aims at providing a dicer for modified plastic particle production to solve the technical problem that the cutting end of the plastic strip is prone to swing in the cutting process due to the lack of limiting of the cutting end, thereby causing the particle size to be uneven and the cutting surface to be irregular.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A dicer for modified plastic particle production includes a conveying belt, a cutting table and a cutting roller arranged in sequence along the feeding direction, wherein the cutting table includes a main body, a limiting unit and a cleaning unit located inside the main body; the limiting unit includes a plurality of limiting channels opened in the inside of the main body and distributed at equal intervals along the width direction, the top surface of the limiting channel is inclined and gradually inclined downward along the feeding direction, and forms a limiting opening at one end close to the cutting roller, one end of the limiting channel close to the conveying belt is provided with a friction wheel, and a gap is left between the friction wheel and the bottom surface of the limiting channel to form a pushing channel; the cleaning unit includes an air inlet channel opened above the limiting channel, the limiting channel and the air inlet channel are communicated through a first air outlet hole, a containing space is opened below the limiting channel, and the containing space and the limiting channel are communicated through a filter hole;
[0007] Furthermore, an extension block is provided on the side of the limiting port near the cutting roller. The top surface of the extension block coincides with the bottom surface of the limiting channel. An inclined second air outlet is opened inside the air inlet channel. The second air outlet is located in the middle of the limiting channel and is opposite to the top surface of the extension block.
[0008] Furthermore, the limiting channel extends in the same direction as the feeding direction and runs through the entire body;
[0009] Furthermore, the overall inclination of the air intake channel is the same as the inclination of the top surface of the limiting channel, and a blower is connected to one side of the air intake channel;
[0010] Furthermore, the bottom of the air inlet channel has multiple evenly spaced first air outlet holes along the extension direction of the air inlet channel;
[0011] Furthermore, a guiding unit is also provided on one side of the main body. The guiding unit includes a guide cylinder set on the side of the limiting channel near the conveyor belt. The guide cylinder corresponds one-to-one with the limiting channel. A guiding channel is formed inside the guide cylinder. The cross-sectional size of the guiding channel gradually increases along the direction close to the conveyor belt.
[0012] Furthermore, the guide channel has a constricted end on the side closest to the main body. The bottom edge of the constricted end is flush with the bottom surface of the limiting channel, and the width of the constricted end is consistent with the width of the limiting channel.
[0013] The beneficial effects of this utility model are as follows:
[0014] (1) Compared with the prior art, by setting a limiting unit, the arc surface of the friction wheel contacts the plastic strip in the feed channel. Under the drive of the first motor, the friction wheel rotates, and the linear propulsion force generated causes the plastic strip to move toward the cutting roller at a constant speed. In addition, the friction wheel can also provide a limiting effect on the plastic strip to prevent the end of the plastic strip away from the cutting roller from swinging at a large amplitude.
[0015] (2) By setting up the cleaning unit, water adhering to the plastic strip can be removed in time before entering the cutting process, effectively preventing water from continuing to adhere to the plastic particles and causing them to stick together, thus avoiding affecting the subsequent screening process. Not only water adhering to the plastic strip, but also dust and other tiny impurities adhering to the plastic strip can be entered into the holding space under the action of wind, realizing the removal and collection of impurities, reducing impurities in plastic particles from the source;
[0016] (3) By setting a guide tube, the plastic strip on the transmission belt is guided so that the plastic strip can accurately enter the limit channel, ensuring the precise connection between the conveyor belt and the cutting table. Attached Figure Description
[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:
[0018] Figure 1 This is an overall schematic diagram of the pelletizer used for producing modified plastic granules in Embodiment 1 of this utility model;
[0019] Figure 2 This is a cross-sectional view of the pelletizer used for producing modified plastic granules in Embodiment 1 of this utility model;
[0020] Figure 3 for Figure 2 Enlarged view at point A1;
[0021] Figure 4 This is a schematic diagram of the cutting table in Embodiment 1 of this utility model;
[0022] Figure 5 This is a right view of the cutting table in Embodiment 1 of this utility model;
[0023] Figure 6 for Figure 5 Enlarged view at point A2;
[0024] Figure 7 for Figure 3 Enlarged view of section A3 in the middle.
[0025] The following labels are shown in the attached diagram:
[0026] 1. Housing, 101. Feed inlet, 2. Conveyor belt, 3. Cutting table, 301. Main body, 302. Limiting channel, 303. Friction wheel, 304. First motor, 305. Extension block, 306. Guide cylinder, 307. Air inlet channel, 308. Blower, 309. First air outlet, 310. Accommodation space, 311. Filter hole, 312. Second air outlet, 313. Limiting port, 4. Cutting roller. Detailed Implementation
[0027] Example 1, specifically as follows Figures 1-7 As shown.
[0028] A pelletizer for producing modified plastic pellets includes a conveyor belt 2, a cutting table 3, and a cutting roller 4 arranged sequentially along the feeding direction. The cutting table 3 includes a main body 1, a guiding unit located on one side of the main body 1, and a limiting unit and a clearing unit located inside the main body 1.
[0029] like Figure 1 As shown, it also includes an outer shell 1. The shell 1 is generally rectangular, and a feed inlet 101 is opened on one side plate. The conveyor belt 2 is located at the feed inlet 101. The plastic strip is transported to the inside of the pelletizer by the conveyor belt 2. The conveyor belt 2 is existing technology, so it will not be described in detail.
[0030] The main body 1 is a right-angled trapezoidal quadrangular prism with its inclined surface facing upward and gradually sloping downward along the direction close to the cutting roller 4, which can effectively prevent the plastic particles that splash during the cutting process from staying and accumulating on the top surface of the main body 1.
[0031] The limiting unit includes multiple limiting channels 302 that are equally spaced along the width direction and are located inside the main body 1. The extending direction of the limiting channels 302 is consistent with the feeding direction and the limiting channels 302 penetrate the entire main body 1. It is worth emphasizing that in this embodiment, the top surface of the limiting channel 302 is a slope that gradually slopes downward along the feeding direction, and a limiting opening 313 is formed at one end near the cutting roller 4. The limiting opening 313 limits the plastic strip at the cutting end, restricting the swing amplitude of the plastic strip, thereby ensuring that the cut plastic particles are more uniform and regular. In addition, an extension block 305 is provided on the side of the limiting opening 313 near the cutting roller 4. The top surface of the extension block 305 coincides with the bottom surface of the limiting channel 302. The extension block 305 is welded and fixed to the main body 301. By setting the extension block 305, the cutting end of the plastic strip is exposed in the main body 301, preventing the cutting roller 4 from contacting the main body 301 during high-speed rotation.
[0032] A friction wheel 303 is provided at one end of the limiting channel 302 near the conveyor belt 2. A gap is left between the friction wheel 303 and the bottom surface of the limiting channel 302, forming a propulsion channel. Each friction wheel 303 corresponds to one of the limiting channels 302. A rotating shaft passes through the center of each friction wheel 303 and is keyed to the friction wheel 303, connecting multiple friction wheels 303 into a single unit. One end of the rotating shaft is connected to a first motor 304, which is connected to the rotating shaft via a coupling. The arc surface of the friction wheel 303 contacts the plastic strip in the propulsion channel. Driven by the first motor 304, the friction wheel 303 rotates, and the resulting linear propulsion force causes the plastic strip to move towards the cutting roller 4 at a constant speed. Furthermore, the friction wheel 303 also provides a limiting function for the plastic strip, preventing significant swaying at the end of the plastic strip away from the cutting roller 4.
[0033] The guiding unit includes a guide cylinder 306 disposed on the side of the limiting channel 302 near the conveyor belt 2. The guide cylinder 306 corresponds one-to-one with the limiting channel 302, and a guiding channel is formed inside the guide cylinder 306. The cross-sectional dimensions of the guiding channel gradually increase along the direction close to the conveyor belt 2. It should be further noted that the side of the guiding channel near the main body 301 has a constricted end, the bottom edge of which is flush with the bottom surface of the limiting channel 302, and the width of the constricted end is consistent with the width of the limiting channel 302. By setting the guide cylinder 306, the plastic strip on the conveyor belt 2 is guided, allowing the plastic strip to accurately enter the limiting channel 302, ensuring precise connection between the conveyor belt 2 and the cutting table 3.
[0034] Since the plastic strips need to be cooled in a water tank after extrusion, water will inevitably adhere to the surface of the plastic strips. If the water is not removed in time, it will continue to adhere to the cut plastic granules, causing the plastic granules to stick together. When entering the subsequent screening process, it will not be conducive to the accurate screening of plastic granules.
[0035] The cleaning unit includes an air inlet channel 307 located above the limiting channel 302, with a parallelogram-shaped cross-section. The overall inclination of the air inlet channel 307 is the same as that of the top surface of the limiting channel 302. A blower 308 is connected to one side of the air inlet channel 307. In this embodiment, the air inlet channel 307 is located inside the friction wheel 303. Multiple evenly spaced first air outlet holes 309 are formed at the bottom of the air inlet channel 307 along its extension direction. The limiting channel 302 and the air inlet channel 307 are connected through the first air outlet holes 309. It is worth emphasizing that the first air outlet holes 309 are located on both sides of a single limiting channel 302 to prevent downward airflow from pressurizing the plastic strip in the limiting channel 302, thereby hindering the movement of the plastic strip.
[0036] A cuboid-shaped receiving space 310 is provided below the limiting channel 302. The inner end of the receiving space 310 corresponds to the inner end of the air inlet channel 307, and the outer end of the receiving space 310 extends to the bottom of the friction wheel 303. The top of the receiving space 310 has multiple evenly spaced filter holes 311 along the feeding direction, and the receiving space 310 and the limiting channel 302 are connected by the filter holes 311.
[0037] During operation, the plastic strip within the limiting channel 302 moves towards the cutting roller 4 under the propulsion of the friction wheel 303. The airflow generated by the blower 308 enters the limiting channel 302 through the first air outlet 309, while the vertically downward airflow peels water off the surface of the plastic strip. The peeled water flows into the receiving space 310 through the filter hole 311. The cleaning unit effectively removes water adhering to the plastic strip before the cutting process begins, preventing water from adhering to the plastic particles and causing them to clump together, thus avoiding any impact on the subsequent screening process. In addition to water adhering to the plastic strip, dust and other small impurities adhering to the plastic strip are also removed and collected by the airflow, reducing impurities in the plastic particles at their source.
[0038] Furthermore, it is worth emphasizing that an inclined second air outlet 312 is provided inside the air inlet channel 307. The second air outlet is located in the center of the limiting channel 302, and the second air outlet 312 is opposite to the top surface of the extension block 305. The airflow through the second air outlet 312 can, on the one hand, apply downward pressure to the cutting end of the plastic strip, further preventing the plastic strip from swinging during the cutting process; on the other hand, the airflow can also dissipate heat and cool the blade on the cutting roller 4, preventing the blade temperature from becoming too high and causing local melting and deformation of the plastic particles.
[0039] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.
Claims
1. A pelletizer for producing modified plastic granules, characterized in that, The application relates to a cutting device for cutting materials, which comprises a conveying belt, a cutting table and a cutting roller arranged in sequence along a feeding direction, wherein the cutting table comprises a main body, a limiting unit and a cleaning unit arranged in the main body; the limiting unit comprises multiple limiting channels arranged in the main body along a width direction at equal intervals, the top surface of the limiting channel is inclined and gradually inclined downward along the feeding direction, a limiting opening is formed at one end of the limiting channel close to the cutting roller, a friction wheel is arranged at one end of the limiting channel close to the conveying belt, a gap is left between the friction wheel and the bottom surface of the limiting channel, and a pushing channel is formed; the cleaning unit comprises an air inlet channel arranged above the limiting channel, the limiting channel and the air inlet channel are communicated through a first air outlet hole, a containing space is arranged below the limiting channel, and the containing space and the limiting channel are communicated through a filter hole.
2. The pelletizer for producing modified plastic particles according to claim 1, characterized in that, An extension block is arranged at one side of the limiting opening close to the cutting roller, the top surface of the extension block is coincident with the bottom surface of the limiting channel, an inclined second air outlet hole is arranged in the air inlet channel, the second air outlet hole is located at the middle of the limiting channel, and the second air outlet hole is opposite to the top surface of the extension block.
3. The pelletizer for producing modified plastic particles according to claim 1, characterized in that, The extending direction of the limiting channel is consistent with the feeding direction, and the limiting channel penetrates through the whole main body.
4. The pelletizer for producing modified plastic particles according to claim 1, wherein The inclination degree of the whole air inlet channel is the same as that of the top surface of the limiting channel, and one side of the air inlet channel is communicated with a blower.
5. The pelletizer for producing modified plastic particles according to claim 4, wherein Multiple first air outlet holes are arranged at the bottom of the air inlet channel along the extending direction of the air inlet channel.
6. The pelletizer for producing modified plastic particles according to claim 1, wherein A guide unit is arranged at one side of the main body, the guide unit comprises a guide cylinder arranged at one side of the limiting channel close to the conveying belt, the guide cylinder is in one-to-one correspondence with the limiting channel, a guide channel is formed in the guide cylinder, and the cross-sectional dimension of the guide channel gradually increases along the direction close to the conveying belt.
7. The pelletizer for producing modified plastic particles according to claim 6, wherein The side close to the main body of the guide channel is a closed end, the bottom edge of the closed end is flush with the bottom surface of the limiting channel, and the width of the closed end is consistent with the width of the limiting channel.