Granulator for processing and producing plastic products
By using a frustum-shaped die and adjustment components in a plastic pelletizer, the problem of poor plastic pellet quality caused by radial temperature difference of the die head was solved, and the temperature uniformity and integrity of the plastic pellets were improved.
Patent Information
- Application Number
- CN202511813028.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-03-03
AI Technical Summary
Existing plastic granulators suffer from poor granule quality due to radial temperature differences in the die head, especially when hardness enhancers are added. The softer plastic in the center of the die head is easily cut off, while the outer ring is harder, resulting in uneven granule shape.
By employing a frustum-shaped die head and adjustment components, the radial temperature difference is reduced by changing the contact position between the outer ring of the die head and the water, and the cutting effect of plastic particles is improved by the shearing force of the moving blade.
It effectively reduces the radial temperature difference of the die head, improves the temperature uniformity and integrity of the plastic granules, and ensures the quality of the plastic granules.
Smart Images
Figure CN121589939A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of plastic production technology, specifically to a granulator for processing and producing plastic products. Background Technology
[0002] In the production of plastic products, certain additives are required to meet the strength and toughness requirements for daily use. This means that a certain amount of time is needed for the plastic and additives to fully fuse during the production process. To improve the production efficiency of plastic products, companies often choose to produce plastic granules with pre-fused additives. These granules can then be directly melted during the production of plastic products, reducing the fusion time between the plastic and additives. Common plastic pelletizers can be divided into water-cooled strip pelletizers and underwater pelletizers. Underwater pelletizers are widely used due to their faster pelletizing speed.
[0003] The principle of an underwater pelletizer is as follows: First, plastic and additives are melted and mixed. Then, the molten plastic is extruded through a die head placed in the water. Therefore, the extruded molten plastic cools and solidifies rapidly in the water and is cut by the rotating cutter head. Because the die head is placed in the water, the contact area between the outer circumference of the die head and the water is large. Due to the influence of the water flow, the temperature of the outer circumference of the die head is lower, while the temperature of the middle part of the die head is higher due to the influence of the molten plastic. This creates a radial temperature difference on the die head. When the plastic is extruded through the die head, the plastic extruded from the center of the die head is softer, while the plastic extruded from the outer ring is harder. Especially when enterprises produce some products with additives that increase hardness, the softer plastic in the center of the die head is easier to cut, while the harder plastic particles in the outer ring are more likely to break when the cutter head cuts, resulting in poor quality plastic particles.
[0004] To address the aforementioned issues, existing technologies have proposed several solutions, such as installing heating belts on the outer ring of the die head to reduce the temperature difference on the radial surface of the die head. However, the installation of heating belts will raise the temperature of the die head, and high temperatures will accelerate the formation of carbides during the plastic melting process. The carbides adhering to the extrusion holes of the die head have uneven shapes, which in turn will lead to uneven size and shape of the plastic granules extruded from the die head, thus affecting the quality of the plastic granules.
[0005] Therefore, a granulator for processing and producing plastic products is proposed. Summary of the Invention
[0006] The purpose of this invention is to provide a granulator for processing and producing plastic products, which solves the problem of poor quality of plastic granules after cutting by the blades due to radial temperature difference of the die head during the production of plastic granules. By setting a frustum-shaped die head, the contact position between the outer ring of the die head and the water is changed, thereby reducing the radial temperature difference of the die head and ensuring the uniformity of temperature when extruding plastic granules from the inner and outer rings of the die head. At the same time, during the extrusion process, the movement of the blades generates a moving shearing force on the plastic, thereby improving the quality of the cut plastic granules.
[0007] To achieve the above objectives, the present invention provides the following technical solution:
[0008] A granulator for processing and producing plastic products includes an extruder, a forming cylinder, a water pump, a motor, and a material barrel. The extruder, forming cylinder, and motor are arranged sequentially from left to right. The water pump is connected to the rear side of the forming cylinder via a water pipe, and the material barrel is connected to the front side of the forming cylinder via a water pipe. The granulator also includes a die head, a turntable, an adjusting assembly, an adjusting platform, a cutting tool, a movable assembly, and a protrusion. The die head is connected to the right side of the extruder, the turntable is connected to the left side of the motor, the adjusting assembly is connected to the outer periphery of the left side of the turntable, the adjusting platform is connected to the left side of the inner cavity of the forming cylinder, and the left side of the adjusting assembly is in contact with the adjusting platform. The cutting tool is connected to the adjusting assembly, the movable assembly is connected to the middle of the left side of the turntable, and the protrusion is connected to the left side of the movable assembly. When the cutting tool rotates, the adjusting assembly guides the cutting tool to slide along the surface of the die head under the action of the adjusting platform. After the cutting tool has rotated for a specified time, the movable assembly drives the protrusion to move into the sliding trajectory of the cutting tool.
[0009] The above solution facilitates the cutting of plastic granules, ensures the integrity of the cut plastic granules, and improves the quality of the plastic granules. By guiding the adjustment components through the adjustment table, the blade slides on the die head surface, thereby generating shearing force when cutting the plastic granules, which facilitates the cutting of the plastic granules.
[0010] Preferably, the die head is frustum-shaped, and the surface of the die head is provided with an array of forming holes, the axis of which is parallel to the axis of the die head.
[0011] The above scheme allows the extruder to extrude the plastic solution through the die head, forming plastic granules in the forming cylinder. By aligning the axis of the forming hole with the axis of the die head, the cross-section of the plastic just extruded from the forming hole is elliptical. This increases the force-bearing area when the plastic is cut without changing the particle size, making it easier to cut complete plastic granules and improving the quality of the plastic granules.
[0012] Preferably, the turntable is frustum-shaped, and the inclined surface of the turntable is perpendicular to the inclined surface of the die head.
[0013] With the above scheme, the inclined surface of the turntable is perpendicular to the inclined surface of the mold head, which makes it easier to install the adjustment components on the turntable.
[0014] Preferably, the adjustment assembly includes a guide rod, a connecting frame, a slider, a push spring, a pulley, a push rod, and a hinge rod. The guide rod is connected to the inclined surface of the turntable, the connecting frame is connected to the end of the guide rod away from the turntable, the slider is connected to the middle of the connecting frame, the push spring is connected between the slider and the connecting frame, the pulley is connected to the side of the slider near the die head, the push rod is connected to the side of the slider away from the die head, one end of the hinge rod is connected to the right end of the push rod, and the other end of the hinge rod is connected to the cutting tool. The pulley is in contact with the right end face of the adjustment table.
[0015] With the above scheme, the pulley is in contact with the right end face of the adjustment table. When the turntable drives the pulley to rotate, the pulley will be affected by the adjustment table. The position of the push rod is adjusted by the slider, thereby realizing the adjustment of the position of the tool by the hinge rod.
[0016] Preferably, the cutting tool includes a fixing frame, a blade, and a spring telescopic rod. Both fixing frames are connected to the guide rod. The blade is connected to the fixing frame on the side near the die head, and the blade is in contact with the adjacent surface of the die head. The spring telescopic rod is connected to the right fixing frame, and the blade is elastic.
[0017] Preferably, the left end of the spring telescopic rod is fixed to the guide rod, the right end of the spring telescopic rod is connected to the right side fixing frame, and the protrusion is made of rubber.
[0018] With the above solution, the protrusion is made of rubber, which can effectively reduce the impact force when the protrusion contacts the bracket, and improve the service life of the bracket and the protrusion.
[0019] Preferably, the adjusting platform includes wave crests and wave troughs, which are connected in a ring array on the left side of the inner cavity of the forming cylinder, and the wave crests and wave troughs are arranged alternately.
[0020] With the above scheme, when the pulley contacts the crest and trough of the adjusting table, it will move left and right, thereby adjusting the position of the blade and making the blade slide along the surface of the die head. This allows the blade to effectively generate shearing force when cutting plastic particles, which facilitates the cutting of plastic particles, avoids the plastic particles from breaking under force, and effectively improves the integrity of the plastic particles.
[0021] Preferably, the movable component includes a screw, a rotating ring, and a positioning rod. The screw is connected to the left side of the turntable, the rotating ring is connected to the outer periphery of the screw, the positioning rod passes through the rotating ring and is connected to the die head, the die head does not have a forming hole on its lower side, and the protrusion is connected directly below the rotating ring.
[0022] By eliminating the forming hole on the lower side of the die head, plastic granules can be prevented from being produced directly below the die head. When the water flows and carries out the plastic granules, the direction of the force applied is from bottom to top, thus preventing the plastic granules from accumulating directly below the die head due to the influence of the water flow. At the same time, the protrusion is located directly below the rotating ring, so that the blade will not cut the plastic granules when processing the material on the blade surface, effectively ensuring the production quality of the plastic granules.
[0023] Preferably, the screw surface has two threaded grooves with the same pitch but opposite directions, and the position of one of the wave crests corresponds to the position of the protrusion.
[0024] With the above scheme, when the screw rotates in the same direction, it can drive the rotating ring to move periodically left and right, thereby adjusting the position of the protrusion.
[0025] Preferably, the sidewalls of the protrusion are arc-shaped, and the blade is thicker on both sides and thinner in the middle.
[0026] The above method results in a thinner blade in the middle, which facilitates bending of the blade in the middle section, removes adhering substances from the blade surface, ensures the cutting effect of the blade, and thus ensures the quality of the cut plastic particles.
[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0028] 1. This invention solves the problem of poor plastic granule quality caused by radial temperature difference in the die head during plastic granule production. By setting a frustum-shaped die head with forming holes on the die head, the required path for plastic to flow out from the periphery of the die head is shortened, thereby reducing the axial temperature difference in the die head and improving the uniformity of plastic granule temperature during extrusion, ensuring the quality of the plastic granules. On the other hand, when the plastic is extruded from the die head, the extrusion surface of the plastic and the die head form an inclined annular shape. This increases the contact area between the blade and the plastic when the adjusting component drives the blade to cut the plastic granules, thereby reducing the stress at the single point of cutting the plastic granules. This extends the service life of the blade while improving the integrity of the plastic granules after cutting, ensuring the quality of the plastic granules.
[0029] 2. By setting the adjustment component, the turntable will drive the pulley to contact the adjustment table during rotation, so that the cutter slides along the guide rod. Combined with the staggered setting of the peaks and troughs of the adjustment table, the cutter continuously slides in an alternating manner on the surface of the die head. During the staggered sliding process, the cutter contacts the extrusion surface of the plastic, thereby generating shearing force on the plastic, which facilitates the cutting of the plastic and effectively ensures the quality of the plastic granules.
[0030] 3. By setting up the movable component, the rotation of the turntable can drive the screw to rotate, which in turn causes the rotating ring to periodically swing left and right on the screw surface. During the leftward swing of the rotating ring, it will drive the protrusion to move closer to the fixed frame. The protrusion corresponds to the corresponding wave crest. Then, when the adjusting component drives the blade to move, it will simultaneously contact the wave crest and the protrusion. The protrusion and the wave crest shorten the distance between the two fixed frames, which causes the blade to bend. The bent blade can effectively detach the plastic attached to the blade, thereby maintaining the sharpness of the blade and ensuring the cutting effect of plastic particles, thus ensuring the quality of plastic particles. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0032] Figure 2 This is a rear view structural schematic diagram of the present invention;
[0033] Figure 3 This is a schematic diagram of the structure of the mold head part of the present invention;
[0034] Figure 4 This is a schematic diagram of the structure of the adjustment component of the present invention;
[0035] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;
[0036] Figure 6 This is a schematic diagram of the structure of the active component part of the present invention;
[0037] Figure 7 This is a top view of the mold head portion of the present invention.
[0038] Figure 8 This is a frontal structural diagram of the mold head portion of the present invention.
[0039] In the diagram: 1. Extruder; 2. Molding cylinder; 3. Water pump; 4. Motor; 5. Material barrel; 6. Die head; 601. Molding hole; 7. Turntable; 8. Adjustment component; 801. Guide rod; 802. Connecting frame; 803. Slider; 804. Push spring; 805. Pulley; 806. Push rod; 807. Hinge rod; 9. Adjustment table; 901. Wave crest; 902. Wave trough; 10. Cutting tool; 1001. Fixing frame; 1002. Blade; 1003. Spring telescopic rod; 11. Movable component; 1101. Screw; 1102. Rotary ring; 1103. Positioning rod; 12. Protrusion. Detailed Implementation
[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, so as to provide a more detailed description of their working state and structural features. Obviously, the described embodiments are only some embodiments of the present invention and not complete embodiments. Based on the embodiments of the present invention, other embodiments obtained by those of ordinary skill in the art without creative effort are all within the protection scope of the present invention.
[0041] Please see Figures 1 to 8 This invention provides a granulator for processing and producing plastic products, the technical solution of which is as follows:
[0042] A granulator for processing and producing plastic products includes an extruder 1, a forming cylinder 2, a water pump 3, a motor 4, and a material barrel 5. The extruder 1, forming cylinder 2, and motor 4 are arranged sequentially from left to right. The water pump 3 is connected to the rear side of the forming cylinder 2 via a water pipe. The water pipe connecting the water pump 3 and the forming cylinder 2 is connected from the lower side of the forming cylinder 2. The material barrel 5 is connected to the front side of the forming cylinder 2 via a water pipe. The water pipe connecting the material barrel 5 and the forming cylinder 2 is connected from the upper side of the forming cylinder 2. Water is pumped in by water pump 3, flows into molding cylinder 2, and then into material cylinder 5. That is, water flows in from the lower side of molding cylinder 2 and flows out from the upper side. The system also includes a die head 6, turntable 7, adjusting assembly 8, adjusting platform 9, cutting tool 10, movable assembly 11, and protrusion 12. The die head 6 is connected to the right side of extruder 1, the turntable 7 is connected to the left side of motor 4, the adjusting assembly 8 is connected to the outer left side of the turntable 7, and the adjusting platform 9 is connected to the left side of the inner cavity of molding cylinder 2. The entire assembly 9 is circular. The axis of the adjusting platform 9 coincides with the axis of the die head 6, and the left side of the adjusting component 8 is in contact with the adjusting platform 9. The cutting tool 10 is connected to the adjusting component 8. The movable component 11 is connected to the middle of the left side of the turntable 7. The protrusion 12 is connected to the left side of the movable component 11. When the cutting tool 10 rotates, the adjusting component 8 guides the cutting tool 10 to slide along the surface of the die head 6 under the action of the adjusting platform 9. After the cutting tool 10 rotates for a specified time, the movable component 11 drives the protrusion 12 to move into the sliding trajectory of the cutting tool 10. The die head 6 is frustum-shaped. The surface of the die head 6 is arrayed with forming holes 601. The axis of the forming holes 601 is parallel to the axis of the die head 6. When the plastic is extruded through the forming holes 601, the diameter of the plastic particles remains unchanged. The cross section of the plastic at the forming holes 601 is elliptical. The turntable 7 is frustum-shaped. The inclined surface of the turntable 7 is perpendicular to the inclined surface of the die head 6. The water flows from bottom to top in the forming cylinder 2, carrying the plastic particles to flow into the material cylinder 5.
[0043] By setting the die head 6 to a frustum shape, the outflow path at the center of the die head 6 is longer and the outflow path at the outer edge is shorter during plastic extrusion. This effectively reduces the temperature difference between the inside and outside of the plastic during extrusion, facilitating temperature uniformity and improving the quality of the extruded plastic. Simultaneously, the inclined surface of the die head 6 increases the number of forming holes 601 on its surface, thereby improving the production efficiency of plastic granules. During plastic extrusion, the motor 4 drives the adjusting component 8 to rotate via the turntable 7. This rotation drives the cutter 10 to rotate, and during the rotation of the cutter 10, the adjusting component 8 is adjusted... The influence of the stage 9 causes the cutting tool 10 to swing along the inclined surface of the die head 6, thereby applying additional shearing force to the plastic during cutting. This effectively improves the integrity of the plastic granules and ensures their quality. Furthermore, the cross-section of the plastic at the forming hole 601 is elliptical. Compared to a circular cross-section, the elliptical cross-section has a larger surface area during cutting. Consequently, the area of the plastic granules subjected to cutting force is increased, making them less prone to breakage during cutting. This effectively improves the integrity of the plastic granule production and thus enhances its quality.
[0044] As one embodiment of the present invention, referring to the figure, the adjustment assembly 8 includes a guide rod 801, a connecting frame 802, a slider 803, a push spring 804, a pulley 805, a push rod 806, and a hinge rod 807. The guide rod 801 is connected to the inclined surface of the turntable 7 and is fixedly connected to the turntable 7. The connecting frame 802 is connected to the end of the guide rod 801 away from the turntable 7 and is perpendicular to the left end face of the adjustment platform 9. The slider 803 is connected to the middle of the connecting frame 802 and can be connected to the middle of the turntable 9. The slider 803 slides within the frame 802. A push spring 804 connects the slider 803 and the connecting frame 802. A pulley 805 is rotatably connected to the side of the slider 803 near the mold head 6. A push rod 806 is fixedly connected to the side of the slider 803 away from the mold head 6. One end of a hinge rod 807 is connected to the right end of the push rod 806, and the hinge rod 807 is hinged to the push rod 806. The other end of the hinge rod 807 is connected to the cutter 10. The cutter 10 includes a fixed frame 1001, a blade 1002, and a spring. The spring-loaded telescopic rod 1003 and two fixed brackets 1001 are slidably connected to the guide rod 801. The hinge rod 807 is hinged to the left fixed bracket 1001. The blade 1002 is connected to the side of the fixed bracket 1001 near the mold head 6, and the blade 1002 is in contact with the adjacent surface of the mold head 6. The spring-loaded telescopic rod 1003 is connected to the right fixed bracket 1001. The blade 1002 is elastic. The left end of the spring-loaded telescopic rod 1003 is fixed to the guide rod 801, and the right end of the spring-loaded telescopic rod 1003 is fixed to the right side. The frame 1001 is connected, the protrusion 12 is made of rubber, the adjustment platform 9 includes crests 901 and troughs 902, the crests 901 and troughs 902 are connected in a ring array on the left side of the inner cavity of the forming cylinder 2, the crests 901 and troughs 902 are arranged alternately, the pulley 805 can fit with the crests 901 and troughs 902 during rotation, when the pulley 805 is at the crest 901, the push spring 804 is in a contracted state, when the pulley 805 is at the trough 902, the push spring 804 is in an open state.
[0045] By setting the adjustment component 8, the motor 4 drives the guide rod 801 to rotate via the turntable 7. The rotation of the guide rod 801 drives the connecting frame 802 to rotate. The connecting frame 802 drives the pulley 805 to move on the surface of the crest 901 and trough 902 via the slider 803. When the pulley 805 rolls toward the crest 901, the pulley 805 moves the push rod 806 to the right via the slider 803. The push rod 806 pushes the fixed frame 1001 to the right via the hinge rod 807. The fixed frame 1001 moves the blade 1002 to the right along the surface of the die head 6. When the pulley 805... When the 05 rolls towards the trough 902, the push spring 804 pushes the slider 803 to move to the left, and at the same time the spring telescopic rod 1003 retracts, accelerating the leftward movement of the fixed frame 1001. The leftward movement of the slider 803 drives the fixed frame 1001 to move to the left through the push rod 806 and the hinge rod 807, which in turn drives the blade 1002 to move to the left along the surface of the die head 6. As the blade 1002 moves left and right along the surface of the die head 6, additional shearing is generated when the blade 1002 cuts the plastic, which facilitates the cutting of plastic particles and maintains the integrity of the plastic particles.
[0046] As one embodiment of the present invention, referring to the figure, the movable component 11 includes a screw 1101, a rotating ring 1102, and a positioning rod 1103. The screw 1101 is fixedly connected to the left side of the turntable 7. The rotating ring 1102 is connected to the outer periphery of the screw 1101 and is threadedly connected to the screw 1101. The positioning rod 1103 passes through the rotating ring 1102 and is fixedly connected to the die head 6. The positioning rod 1103 does not contact the turntable 7. The protrusion 12 is connected directly below the rotating ring 1102. The surface of the screw 1101 has two threaded grooves with the same pitch but opposite directions. The screw 1101 is a reciprocating screw. As the screw 1101 rotates, the rotating ring 1102... 102 will move to the left side of the screw 1101. As the screw 1101 rotates further, the swivel 1102 will move to the right. The rotation of the screw 1101 will cause the swivel 1102 to swing periodically left and right on the surface of the screw 1101. The position of a wave crest 901 corresponds to the position of the protrusion 12. The mold head 6 does not have a forming hole 601 on its lower side. Therefore, when the cutter 10 rotates to the position directly under the mold head 6, it does not cut the plastic. The side wall of the protrusion 12 is arc-shaped. The arc-shaped design facilitates the contact between the fixing frame 1001 and the protrusion 12. The blade 1002 is thicker on both sides and thinner in the middle, which facilitates the bending of the middle part of the blade 1002.
[0047] By setting the active component 11, as the cutting progresses, the screw 1101 will drive the rotating ring 1102 to move to the left, thereby reducing the distance between the protrusion 12 and the wave crest 901 directly below. When the rotating ring 1102 drives the protrusion 12 to move within the specified range, the fixed frame 1001 will move to the left and contact the protrusion 12. That is, when the pulley 805 rotates to the right and pushes the fixed frame 1001 to move to the right, the right fixed frame 1001 will contact the protrusion 12, and thus the right fixed frame 1001 cannot move to the limit position. At this time, the pulley 805 continues to move to the right under the influence of the wave crest 901, and the distance between the two fixed frames 1001 is further reduced. At this time, the thinner part in the middle of the blade 1002 bends, and the plastic attached to the blade 1002 is pulled away, thus the cutting effect of the blade 1002 is good.
[0048] During the extrusion of plastic through the die head 6 in the extruder 1, the contact area between the center of the die head 6 and the water is small, while the contact area between the outer wall of the die head 6 and the water is large. This causes a radial temperature difference in the die head 6. When the blade 1002 cuts plastic with this temperature difference, especially when using plastic granules for making the outer shell (which have additives for hardening to improve durability), the plastic granules are prone to breakage when the blade 10 cuts plastic granules with a high degree of hardening. This results in uneven size and poor quality of the plastic granules. This invention addresses this by setting the die head 6 into a frustum shape, reducing the contact area between the outer ring of the die head 6 and the water, thereby reducing the axial temperature difference in the die head 6 and improving the temperature uniformity during plastic granule extrusion. At the same time, as the adjusting component 8 drives the blade 10 to rotate, the adjusting component 8 is affected by the adjusting table 9, causing the blade 10 to periodically swing left and right. This generates shearing force when the blade 10 cuts the plastic, facilitating the cutting of the plastic granules. The specific solution is as follows:
[0049] To reduce the temperature difference along the axis of the die head 6, the die head 6 is set into a frustum shape. When the extruder 1 extrudes plastic through the die head 6, the contact area between the outer wall of the die head 6 and the water is reduced, thereby effectively improving the uniformity of the temperature inside and outside the die head 6. At the same time, the extrusion surface of the die head 6 is elliptical. During the process of cutting the plastic into plastic granules, the elliptical extrusion surface increases the contact area between the cutter 10 and the plastic, thus facilitating the cutting of the plastic by the cutter 10.
[0050] To facilitate plastic cutting, this solution incorporates an adjustment component 8. During rotation, the adjustment component 8, influenced by the adjustment table 9, causes the blade 10 to move left and right along the surface of the die head 6. This allows the blade 10 to generate shearing force on the plastic during cutting. Specifically, the motor 4 drives the guide rod 801 to rotate via the turntable 7. The rotation of the guide rod 801 causes the pulley 805 to rotate around the axis of the die head 6. During rotation, the pulley 805 contacts the crests 901 and troughs 902. When the pulley 805 contacts the crest 901, it moves to the right. This rightward movement of the pulley 805, via the push rod 806, causes the hinge rod 807 to move to the right. The hinge rod 807 is connected to the fixed frame 1001. During the movement of the hinge rod 807, it will push the blade 10 to move to the right along the guide rod 801. The blade 1002 is elastic and can keep in contact with the mold head 6. When the pulley 805 contacts the trough 902, the pulley 805 moves to the left under the action of the push spring 804. At this time, the push rod 806 drives the hinge rod 807 to move to the left. The hinge rod 807 pulls the fixed frame 1001 to move to the left. Through the staggered arrangement of the crest 901 and the trough 902, the blade 1002 slides left and right along the surface of the mold head 6, thereby generating shearing force on the plastic, which facilitates the cutting of the plastic and effectively improves the integrity of the plastic particles.
[0051] After extrusion, some plastic granules do not completely solidify internally. This can lead to the core of the granules adhering to the blade 1002 during cutting, affecting its cutting performance. This invention addresses this by limiting the leftward swing of the blade 1002 after it has passed under the die head 6 for a specified time. This causes the blade 1002 to bend, effectively detaching the plastic residue. Specifically, when the turntable 7 rotates, it drives the screw 1101 to rotate. The screw 1101 is threadedly connected to the rotating ring 1102. Under the action of the positioning rod 1103, the rotating ring 1102 moves to the left, causing the protrusion to... When the rotating ring 1102 moves to the left near the limit position, the lower pulley 805 will contact the crest 901, the blade 10 will move to the right, the right side fixing frame 1001 will contact the protrusion 12 and be limited by the protrusion 12, and the rotation of the turntable 7 will cause the roller to continue to move towards the crest 901, the distance between the left and right fixing frames 1001 will decrease, the blade 1002 will bend under force, the plastic adhering material will be pulled away from the blade 1002, and two thread grooves with the same pitch but opposite direction will be opened on the surface of the screw 1101, so that when the rotating ring 1102 moves to the left to the limit position, it will move to the right, thereby realizing the periodic cleaning of the blade 1002.
[0052] Although embodiments of the invention have been described, those skilled in the art can make variations and modifications to these embodiments with an understanding of the principles and spirit of the invention, resulting in other effects. The scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A granulator for processing and producing plastic products, comprising an extruder (1), a forming cylinder (2), a water pump (3), a motor (4), and a material cylinder (5), wherein the extruder (1), the forming cylinder (2), and the motor (4) are arranged sequentially from left to right, the water pump (3) is connected to the rear side of the forming cylinder (2) via a water pipe, and the material cylinder (5) is connected to the front side of the forming cylinder (2) via a water pipe, characterized in that: It also includes a die head (6), a turntable (7), an adjusting assembly (8), an adjusting table (9), a cutting tool (10), a movable assembly (11), and a protrusion (12). The die head (6) is connected to the right side of the extruder (1), the turntable (7) is connected to the left side of the motor (4), the adjusting assembly (8) is connected to the outer periphery of the left side of the turntable (7), and the adjusting table (9) is connected to the left side of the inner cavity of the forming cylinder (2), with the left side of the adjusting assembly (8) in contact with the adjusting table (9). The cutting tool (10) is connected to the adjusting assembly (8), the movable assembly (11) is connected to the middle of the left side of the turntable (7), and the protrusion (12) is connected to the left side of the movable assembly (11). When the cutting tool (10) rotates, the adjusting assembly (8) guides the cutting tool (10) to slide along the surface of the die head (6) under the action of the adjusting table (9). After the cutting tool (10) rotates for a specified time, the movable assembly (11) drives the protrusion (12) to move into the sliding trajectory of the cutting tool (10).
2. The granulator for processing and producing plastic products according to claim 1, characterized in that: The mold head (6) is frustum shaped, and the surface of the mold head (6) is provided with an array of forming holes (601), the axis of the forming holes (601) being parallel to the axis of the mold head (6).
3. A granulator for processing and producing plastic products according to claim 2, characterized in that: The turntable (7) is frustum-shaped, and the inclined surface of the turntable (7) is perpendicular to the inclined surface of the mold head (6).
4. A granulator for processing and producing plastic products according to claim 3, characterized in that: The adjusting assembly (8) includes a guide rod (801), a connecting frame (802), a slider (803), a push spring (804), a pulley (805), a push rod (806), and a hinge rod (807). The guide rod (801) is connected to the inclined surface of the turntable (7). The connecting frame (802) is connected to the end of the guide rod (801) away from the turntable (7). The slider (803) is connected to the middle of the connecting frame (802). The push spring (804)... The pulley (805) is connected between the slider (803) and the connecting frame (802). The pulley (805) is connected to the side of the slider (803) near the mold head (6). The push rod (806) is connected to the side of the slider (803) away from the mold head (6). One end of the hinge rod (807) is connected to the right end of the push rod (806), and the other end of the hinge rod (807) is connected to the cutter (10). The pulley (805) is in contact with the right end face of the adjusting table (9).
5. A granulator for processing and producing plastic products according to claim 4, characterized in that: The cutting tool (10) includes a fixing frame (1001), a blade (1002), and a spring telescopic rod (1003). Both fixing frames (1001) are connected to the guide rod (801). The blade (1002) is connected to the fixing frame (1001) on the side close to the mold head (6), and the blade (1002) is in contact with the adjacent surface of the mold head (6). The spring telescopic rod (1003) is connected to the right fixing frame (1001), and the blade (1002) is elastic.
6. A granulator for processing and producing plastic products according to claim 5, characterized in that: The left end of the spring telescopic rod (1003) is fixed to the guide rod (801), and the right end of the spring telescopic rod (1003) is connected to the right side fixing frame (1001). The protrusion (12) is made of rubber.
7. A granulator for processing and producing plastic products according to claim 4, characterized in that: The adjustment platform (9) includes a peak (901) and a trough (902), which are connected in a ring array on the left side of the inner cavity of the forming cylinder (2), and the peaks (901) and troughs (902) are arranged alternately.
8. A granulator for processing and producing plastic products according to claim 7, characterized in that: The movable component (11) includes a screw (1101), a rotating ring (1102), and a positioning rod (1103). The screw (1101) is connected to the left side of the turntable (7), the rotating ring (1102) is connected to the outer periphery of the screw (1101), the positioning rod (1103) passes through the rotating ring (1102) and is connected to the die head (6), and the protrusion (12) is connected directly below the rotating ring (1102).
9. A granulator for processing and producing plastic products according to claim 8, characterized in that: The screw (1101) has two threaded grooves with the same pitch but opposite directions on its surface, and the position of one of the wave crests (901) corresponds to the position of the protrusion (12).
10. A granulator for processing and producing plastic products according to claim 5, characterized in that: The mold head (6) has no forming hole (601) on its lower side, the sidewall of the protrusion (12) is arc-shaped, and the blade (1002) is thicker on both sides and thinner in the middle.