A granulating device for plastic product production

Abstract

The utility model discloses a granulating device for plastic product production, including feed hopper, material cylinder, feed screw, rotary drive mechanism, heating jacket, heat preservation cover, air cooling mechanism, extrusion head and granulating mechanism, rotary drive mechanism is used to drive feed screw rotation, heating jacket is used to heat material cylinder, and heat preservation cover is wrapped in the outside of heating jacket, the bottom of heat preservation cover is equipped with cooling hole, and air cooling mechanism is used for conveying cool air to cooling hole, extrusion hole is used for extruding the molten plastic in material cylinder into strip object. The utility model discloses rotary drive mechanism can drive feed screw rotation, to convey plastic raw material through helical propulsion effect, and heating jacket can heat plastic raw material and form molten state, and heat preservation cover can reduce heat loss, and air cooling mechanism can promote plastic raw material solidification through the mode of air cooling, and cut the extruded strip object into granules through granulating mechanism, and the whole process is smooth, and temperature control is stable, and effectively improves the forming quality and production efficiency of granule.

Description

Technical Field

[0001] This utility model relates to the field of granulation equipment, and in particular to a granulation equipment for the production of plastic products. Background Technology

[0002] In the production process of plastic products, plastic raw materials are generally melted, extruded and cut into granules by a granulation device to facilitate subsequent product molding and processing.

[0003] In existing technologies, granulation equipment heats the barrel during processing to plasticize the plastic raw material inside, and uses a cooling system to control the temperature to ensure smooth extrusion and pelletizing. However, the cooling systems in existing granulation equipment are mostly water-cooled, which can easily cause uneven cooling, resulting in unstable plastic melting state and affecting the extrusion molding quality of the pellets. At the same time, water cooling can cause local condensation or even corrosion in the barrel, thus increasing the difficulty of equipment maintenance.

[0004] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a granulation device for producing plastic products that provides uniform cooling and improves the extrusion molding effect.

[0006] To achieve this objective, the present invention adopts the following technical solution: a granulation device for producing plastic products, comprising a hopper, a barrel, a feeding screw, a rotary drive mechanism, a heating jacket, a heat insulation cover, an air-cooling mechanism, an extrusion head, and a pelletizing mechanism;

[0007] The feed hopper is connected to the material cylinder, and the feed hopper is used to feed plastic raw materials into the material cylinder. The feeding screw is rotatably disposed in the material cylinder. The rotary drive mechanism is connected to the end of the feeding screw, and the rotary drive mechanism is used to drive the feeding screw to rotate.

[0008] Multiple heating jackets are spaced apart along the extension direction of the material cylinder. The heating jackets are used to heat the material cylinder. The heat insulation cover is wrapped around the outside of the heating jacket. The bottom of the heat insulation cover is provided with cooling holes. The air cooling mechanism is located at the bottom of the heat insulation cover and is used to deliver cold air to the cooling holes.

[0009] The extrusion head is located at the discharge end of the barrel, and the extrusion head is provided with a plurality of extrusion holes, which are used to extrude the molten plastic in the barrel into strips;

[0010] The pelletizing mechanism includes a mounting frame, a rotary motor, a rotating shaft, and a cutter. The mounting frame is located outside the extrusion head, and the rotary motor is mounted on the mounting frame. Its output end is connected to the cutter through the rotating shaft. The cutter is used to cut the strip-shaped material extruded from the extrusion orifice into pellets.

[0011] In the above-described granulation device for producing plastic products, the extrusion orifice is located in the central region of the extrusion head.

[0012] The outer end face of the extruder head is provided with a groove, and the cutter is located in the groove.

[0013] Using the above technical solution, in the granulation device for producing plastic products, the air-cooling mechanism includes a blower and an air duct. The blower is located below the insulation cover, and the air outlet of the blower is connected to the cooling hole through the air duct.

[0014] Using the above technical solution, in the granulation device for producing plastic products, the heat insulation cover includes an upper cover and a lower cover, and the upper cover and the lower cover are detachably connected by bolts;

[0015] The cooling hole is located on the lower cover, and the top of the upper cover is provided with a vent hole, which is used to allow the airflow flowing through the heating sleeve to be discharged outward.

[0016] In the above-mentioned granulation device for producing plastic products, the top of the upper cover is provided with a clearance hole, which is used to avoid the wiring terminals of the heating sleeve.

[0017] In the above-described granulation device for producing plastic products, a transparent window is provided on the upper side wall of the feed hopper, and the transparent window is used to display the material level of the plastic raw material in the feed hopper.

[0018] In the above technical solution, the granulation device for producing plastic products is further provided with a discharge pipe at the bottom of the feed hopper, and the discharge pipe is used to discharge the plastic raw materials in the feed hopper;

[0019] The discharge pipe is equipped with a ball valve, which is used to adjust the opening degree of the discharge pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The rotary drive mechanism of this invention can drive the feeding screw to rotate, so as to convey the plastic raw material along the extension direction of the barrel through the spiral propulsion action. The heating jacket can heat the plastic raw material inside the barrel to make it melt, while the heat preservation cover can keep the heat and reduce heat loss. The air cooling mechanism can moderately cool the molten raw material by conveying cold air, so that it gradually solidifies before extrusion to facilitate molding. The pelletizing mechanism can cut the extruded strip into pellets. The whole pelletizing process is smooth and has good temperature control, which effectively improves the extrusion molding quality of the pellets and the pelletizing production efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the feed hopper structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the pelletizing mechanism of this utility model;

[0027] Figure 4 This is a schematic diagram of the air-cooling mechanism of this utility model;

[0028] Figure 5 This is a partial structural diagram of the heat insulation cover of this utility model. Detailed Implementation

[0029] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 5As shown, this utility model embodiment provides a granulation device for producing plastic products, including a feeding hopper 1, a material cylinder 2, a feeding screw 3, a rotary drive mechanism 4, heating jackets 5, a heat insulation cover 6, an air-cooling mechanism 7, an extrusion head 8, and a pelletizing mechanism 9. The feeding hopper 1 is connected to the material cylinder 2 and is used to feed plastic raw materials into the material cylinder 2. The feeding screw 3 is rotatably disposed inside the material cylinder 2. The rotary drive mechanism 4 is connected to the end of the feeding screw 3 and is used to drive the feeding screw 3 to rotate. Multiple heating jackets 5 are spaced apart along the extension direction of the material cylinder 2 and are used to heat the material cylinder 2. The heat insulation cover 6 is wrapped around the outside of the heating jackets 5 and has cooling holes 60 at its bottom. The air-cooling mechanism 7 is disposed at the bottom of the heat insulation cover 6 and is used to supply cold air to the cooling holes 60. The extrusion head 8 is located at the discharge end of the barrel 2. The extrusion head 8 is provided with multiple extrusion holes 80, which are used to extrude the molten plastic in the barrel 2 into strips. The plastic raw material enters the barrel 2 from the feed hopper 1. Driven by the rotary drive mechanism 4, the feed screw 3 continuously rotates and pushes the plastic raw material forward. It is heated by the heat provided by the heating jacket 5 to make the plastic raw material reach a molten state. The heat insulation cover 6 can reduce heat loss. After the plastic raw material is fully plasticized, it is extruded into strips through the extrusion holes 80 in the extrusion head 8. Before this, the air cooling mechanism 7 can generate cold air and send it into the heating jacket 5 from the cooling hole 60 to moderately cool the molten plastic raw material in the barrel 2, so that it gradually enters the solidification stage before extrusion, which is convenient for subsequent strip forming and pelletizing operations, and at the same time improves the processing efficiency of the entire pelletizing process.

[0033] The pelletizing mechanism 9 includes a mounting frame 91, a rotary motor 92, a rotating shaft 93, and a cutter 94. The mounting frame 91 is located outside the extrusion head 8. The rotary motor 92 is located on the mounting frame 91, and its output end is connected to the cutter 94 through the rotating shaft 93 to drive the cutter 94 to rotate. During rotation, the cutter 94 contacts and cuts the extruded plastic strip, thereby dividing the continuous strip into granular material.

[0034] like Figure 3 As shown, further, the extrusion hole 80 is located in the middle region of the extrusion head 8, and a groove 801 is provided on the outer end face of the extrusion head 8. The cutter 94 is located in the groove 801. This arrangement allows the cutter 94 to fit tightly against the extrusion head 8 during cutting, ensuring that the strip is cut off as soon as it leaves the extrusion hole 80, thus improving the cutting accuracy of the particles. In addition, the groove 801 provides a closed working space for the cutter 94, thereby preventing splashing during the pelletizing process and providing a safety protection function.

[0035] like Figure 4 As shown, the air-cooling mechanism 7 further includes a blower 71 and an air duct 72. The blower 71 is located below the insulation cover 6. The air outlet of the blower 71 is connected to the cooling hole 60 through the air duct 72. The blower 71 can generate cold air, which is delivered to the heating jacket 5 through the air duct 72, thereby cooling the molten plastic raw material inside the material cylinder 2.

[0036] like Figure 4 and Figure 5 As shown, the heat insulation cover 6 further includes an upper cover 61 and a lower cover 62. The upper cover 61 and the lower cover 62 are detachably connected by bolts. The cooling hole 60 is located on the lower cover 62. The top of the upper cover 61 is provided with a vent hole 610. The vent hole 610 is used to allow the airflow flowing through the heating jacket 5 to be discharged outward, thereby forming a circulating flow path for air intake and exhaust, which effectively improves the cooling efficiency.

[0037] like Figure 4 As shown, further, the top of the upper cover 61 is provided with a clearance hole 611, which is used to avoid the wiring terminals of the heating sleeve 5.

[0038] like Figure 2 As shown, the upper side wall of the feed hopper 1 is provided with a transparent window 10, which is used to display the material level of the plastic raw material in the feed hopper 1.

[0039] like Figure 2 As shown, the bottom of the feed hopper 1 is further provided with a discharge pipe 11, which is used to discharge the plastic raw material in the feed hopper 1. The discharge pipe 11 is provided with a ball valve 12, which is used to adjust the opening of the discharge pipe 11. When it is necessary to clean the residual raw material in the feed hopper 1 or to change to a different type of plastic raw material, the plastic raw material in the feed hopper 1 can be discharged through the discharge pipe 11, avoiding the inconvenience of disassembling the feed hopper 1 or manually turning it over in the traditional way, and effectively improving the unloading efficiency of the feed hopper 1.

[0040] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A granulation device for producing plastic products, characterized in that, It includes a feed hopper, feed cylinder, feed screw, rotary drive mechanism, heating jacket, heat insulation cover, air cooling mechanism, extrusion head and pelletizing mechanism; The feed hopper is connected to the material cylinder, and the feed hopper is used to feed plastic raw materials into the material cylinder. The feeding screw is rotatably disposed in the material cylinder. The rotary drive mechanism is connected to the end of the feeding screw, and the rotary drive mechanism is used to drive the feeding screw to rotate. Multiple heating jackets are spaced apart along the extension direction of the material cylinder. The heating jackets are used to heat the material cylinder. The heat insulation cover is wrapped around the outside of the heating jacket. The bottom of the heat insulation cover is provided with cooling holes. The air cooling mechanism is located at the bottom of the heat insulation cover and is used to deliver cold air to the cooling holes. The extrusion head is located at the discharge end of the barrel, and the extrusion head is provided with a plurality of extrusion holes, which are used to extrude the molten plastic in the barrel into strips. The pelletizing mechanism includes a mounting frame, a rotary motor, a rotating shaft, and a cutter. The mounting frame is located outside the extrusion head, and the rotary motor is mounted on the mounting frame. Its output end is connected to the cutter through the rotating shaft. The cutter is used to cut the strip-shaped material extruded from the extrusion orifice into pellets.

2. The granulation apparatus for producing plastic products according to claim 1, characterized in that, The extrusion orifice is located in the central region of the extrusion head; The outer end face of the extruder head is provided with a groove, and the cutter is located in the groove.

3. The granulation apparatus for producing plastic products according to claim 1, characterized in that, The air-cooling mechanism includes a blower and an air duct. The blower is located below the insulation cover, and the air outlet of the blower is connected to the cooling hole through the air duct.

4. The granulation apparatus for producing plastic products according to claim 1, characterized in that, The heat insulation cover includes an upper cover and a lower cover, and the upper cover and the lower cover are detachably connected by bolts; The cooling hole is located on the lower cover, and the top of the upper cover is provided with a vent hole, which is used to allow the airflow flowing through the heating sleeve to be discharged outward.

5. The granulation apparatus for producing plastic products according to claim 4, characterized in that, The top of the upper cover is provided with a clearance hole, which is used to avoid the wiring terminals of the heating sleeve.

6. The granulation apparatus for producing plastic products according to claim 1, characterized in that, The upper side wall of the feed hopper is provided with a transparent window, which is used to display the material level of the plastic raw material in the feed hopper.

7. The granulation apparatus for producing plastic products according to claim 1, characterized in that, The bottom of the feed hopper is also provided with a discharge pipe, which is used to discharge the plastic raw material in the feed hopper; The discharge pipe is equipped with a ball valve, which is used to adjust the opening degree of the discharge pipe.

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