Polymer flame-retardant plastic particle extrusion device

Abstract

The utility model relates to a macromolecular flame-retardant plastic particle extrusion device, which belongs to the technical field of plastic particle extrusion devices and comprises a fixed seat, an extrusion mechanism used for extruding and processing plastic particles is mounted at the top of the fixed seat, and four support rods are fixed at the top of the fixed seat. A supporting plate is fixed among the top ends of the four supporting rods, a discharging mechanism used for smooth discharging is installed at the top of the supporting plate, and the discharging mechanism comprises a conveying assembly used for conveying macromolecular flame-retardant plastic particles and a feeding assembly used for feeding. The feeding assembly is arranged at the top of the conveying assembly and comprises a discharging barrel and a discharging hopper fixed to the top of the discharging barrel. According to the high-molecular flame-retardant plastic particle extrusion device, external force can be continuously applied to plastic particles at the feeding hole, so that the plastic particles are not easily adhered together when the plastic particles are still and melted, and normal blanking of the plastic particles is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic particle extrusion devices, in particular to a polymer flame-retardant plastic particle extrusion device. Background Art

[0002] The plastic pellet extrusion device relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the material, and then form it through a die. A heating mechanism is installed in the middle to heat the internal plastic pellets to convert them into a semi-liquid substance, which is then extruded through the port to form it. It can be used for most types of plastic pellet extrusion work. Flame retardant pellets are also called flame retardant pellets and fireproof pellets. They are a type of product produced to meet the fire protection requirements of plastic and rubber products. A plastic pellet extrusion device is also required when plasticizing and extruding polymer flame retardant plastic pellets.

[0003] According to an environmentally friendly flame-retardant modified PC plastic extrusion device disclosed in Chinese patent announcement number CN214521810U, the patent can control the falling speed of plastic particles through the coordinated arrangement of a blanking square tube, a feeding tube, a hopper, a servo motor, a mandrel, a spiral fan blade and a light curtain sensor, and is convenient for detecting the falling of plastic particles, which is beneficial to improving production quality. However, the patent still has certain shortcomings in practical applications. When the extruder is working, the heat transfer is continuous, resulting in heat being transferred through the inside of the extruder and between the plastic particles to the inside of the hopper and the plastic particles that have not yet entered the extruder, causing them to melt to varying degrees. Such melting will cause sticking between the plastic particles. When no external force is applied to them, the sticky plastic particles are likely to cause a certain blockage to the mouth, which is not conducive to the normal discharge of plastic particles. In this regard, the present application provides a polymer flame-retardant plastic particle extrusion device to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a polymer flame-retardant plastic particle extrusion device, which has the advantages of being able to continuously apply external force to the plastic particles at the feed port, so that they are not easily stuck together due to melting while standing still, etc., and solves the problem that the existing plastic particle extruders are prone to melting to varying degrees due to heat transfer during feeding, and thus are easily stuck together and block the feed port without applying external force.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of being able to continuously apply external force to the plastic particles at the feed port so that they are not easily stuck together due to being stationary and melted, the utility model provides the following technical solutions: a polymer flame-retardant plastic particle extrusion device, comprising a fixed seat, an extrusion mechanism for extruding the plastic particles is installed on the top of the fixed seat, four support rods are fixed on the top of the fixed seat, a support plate is fixed between the top ends of the four support rods, and a feeding mechanism for smooth feeding is installed on the top of the support plate;

[0008] The unloading mechanism includes a conveying assembly for conveying polymer flame-retardant plastic particles and a feeding assembly for feeding; the feeding assembly is arranged on the top of the conveying assembly;

[0009] The feeding assembly includes a lower barrel, a lower hopper fixed to the top of the lower barrel, a connecting plate fixed to the top of the lower hopper, a second driving mechanism fixedly installed on the top of the connecting plate, an active bevel gear fixedly installed on the output shaft of the second driving mechanism, a transmission rod rotatably connected to the bottom of the connecting plate through a bearing, a driven bevel gear fixedly installed on the outside of the transmission rod, a plurality of pushing rods fixed to the outside of the transmission rod, a tilting rod fixed to the outside of the transmission rod and located inside the lower hopper, a small fan fixedly installed on the top of the connecting plate, an air supply pipe fixedly installed on the air outlet end of the small fan, and two exhaust pipes fixed at the bottom of the air supply pipe.

[0010] Furthermore, the conveying assembly includes a feed pipe fixed to the top of the extruder body, two light curtain sensors fixedly installed inside the feed pipe, a conveying cylinder fixed to the top of the support plate, a rotating rod rotatably connected to the inner side of the conveying cylinder through a bearing, a spiral blade fixed to the outer side of the rotating rod, and a first driving mechanism fixedly installed on the right side of the conveying cylinder.

[0011] Furthermore, the extrusion mechanism includes an extruder body fixedly mounted on the top of a fixing seat, and a heating mechanism fixedly mounted on the outside of the extruder body and used for heating polymer flame-retardant plastic particles inside the extruder body.

[0012] Furthermore, an extrusion screw is rotatably connected to the inner side of the extruder body through a bearing, a power mechanism for driving the extrusion screw is fixedly installed on the right side of the extruder body, and the heating end of the heating mechanism passes through the outer side of the extruder body and extends to the inside of the extruder body.

[0013] Furthermore, the output shaft of the first driving mechanism passes through the right side of the conveying cylinder and is fixedly connected to the right end of the rotating rod, and the conveying cylinder is inclined to the lower left.

[0014] Furthermore, the top end of the transmission rod passes through the top of the connecting plate, the left side of the active bevel gear and the right side of the driven bevel gear are meshed with each other, and a plurality of the push rods are distributed between the interior of the lower hopper and the interior of the lower barrel.

[0015] Furthermore, the outer side of the tilting rod fits with the inner side of the lower hopper, a dust screen is fixedly installed on the air inlet end of the small fan, the bottom end of the exhaust pipe passes through the top of the connecting plate, and the outer side of the exhaust pipe is fixedly connected to the top of the connecting plate.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a polymer flame retardant plastic particle extrusion device, which has the following beneficial effects:

[0018] The polymer flame-retardant plastic particle extrusion device can continuously apply external force to the plastic particles at the feed port through the cooperation between the extrusion mechanism on the top of the fixed seat and the feeding mechanism, so that it is not easy for the plastic particles to stick together due to being stationary and melted. At the same time, the continuous introduction of external air allows the plastic particles at the feed port to be cooled to a certain extent, thereby further reducing the possibility of sticking and clogging, which is beneficial to the normal feeding of the plastic particles, so that the extrusion work of the plastic particles can be carried out efficiently and normally, thereby effectively improving the practicality of the plastic particle extrusion device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a top view of the lower hopper connection structure in the structure of the utility model;

[0021] Figure 3 It is a cross-sectional schematic diagram of the feeding mechanism in the structure of the utility model;

[0022] Figure 4 It is a three-dimensional schematic diagram of the lower hopper connection structure in the structure of the utility model.

[0023] In the figure: 1 fixed seat, 200 extrusion mechanism, 201 extruder body, 202 heating mechanism, 3 support rod, 4 support plate, 500 unloading mechanism, 501 feeding pipe, 502 light curtain sensor, 503 conveying cylinder, 504 rotating rod, 505 spiral blade, 506 first driving mechanism, 507 unloading cylinder, 508 unloading hopper, 509 connecting plate, 510 second driving mechanism, 511 driving bevel gear, 512 transmission rod, 513 driven bevel gear, 514 pushing rod, 515 tilting rod, 516 small fan, 517 air supply pipe, 518 exhaust pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 The utility model provides a technical solution: a polymer flame-retardant plastic particle extrusion device, comprising a fixed seat 1, an extrusion mechanism 200 for extruding plastic particles is installed on the top of the fixed seat 1, four support rods 3 are fixed on the top of the fixed seat 1, a support plate 4 is fixed between the tops of the four support rods 3, and a feeding mechanism 500 for smooth feeding is installed on the top of the support plate 4; through the cooperation between the extrusion mechanism 200 on the top of the fixed seat 1 and the feeding mechanism 500, external force can be continuously applied to the plastic particles at the feed inlet, so that it is not easy to stick together due to the static melting, and at the same time, the continuous introduction of external air allows the plastic particles at the feed inlet to be subjected to a certain cooling effect, thereby further reducing the possibility of sticking and clogging, which is beneficial to the normal feeding of plastic particles, so that the extrusion work of plastic particles can be carried out efficiently and normally, thereby effectively improving the practicality of the plastic particle extrusion device.

[0026] In this embodiment, the unloading mechanism 500 is a structure for unloading polymer flame-retardant plastic particles normally.

[0027] like Figure 1 As shown, the unloading mechanism 500 includes a conveying component for conveying polymer flame-retardant plastic particles and a feeding component for feeding; the feeding component is arranged on the top of the conveying component.

[0028] It should be noted that the polymer flame-retardant plastic particles entering through the feeding component will be smoothly transported to the interior of the conveying component, and then evenly transported through the conveying component.

[0029] In this embodiment, the feeding assembly is a structure for allowing the polymer flame retardant plastic particles to fall continuously and smoothly.

[0030] like Figure 2 , Figure 3 and Figure 4As shown, the feeding assembly includes a lower barrel 507, a lower hopper 508 fixed to the top of the lower barrel 507, a connecting plate 509 fixed to the top of the lower hopper 508, a second driving mechanism 510 fixedly installed on the top of the connecting plate 509, an active bevel gear 511 fixedly installed on the output shaft of the second driving mechanism 510, a transmission rod 512 rotatably connected to the bottom of the connecting plate 509 through a bearing, a driven bevel gear 513 fixedly installed on the outside of the transmission rod 512, a plurality of pushing rods 514 fixed to the outside of the transmission rod 512, a tilting rod 515 fixed to the outside of the transmission rod 512 and located inside the lower hopper 508, a small fan 516 fixedly installed on the top of the connecting plate 509, an air supply pipe 517 fixedly installed on the air outlet end of the small fan 516, and two exhaust pipes 518 fixed to the bottom of the air supply pipe 517.

[0031] It should be noted that the second driving mechanism 510 can be a servo motor, the top end of the transmission rod 512 passes through the top of the connecting plate 509, the left side of the active bevel gear 511 and the right side of the driven bevel gear 513 are meshed with each other, so that the active bevel gear 511 can drive the driven bevel gear 513 to rotate, and a plurality of push rods 514 are distributed between the interior of the lower hopper 508 and the interior of the lower barrel 507, so that the push rods 514 can stir the polymer flame retardant plastic particles inside the lower hopper 508 and the lower barrel 507 so that they will not stick together due to long-term stillness.

[0032] In addition, the outer side of the tilting rod 515 fits with the inner side of the lower hopper 508, so that the tilting rod 515 can scrape the inner side of the lower hopper 508 to promote the falling of the polymer flame retardant plastic particles. The air inlet end of the small fan 516 is fixedly installed with a dust screen, and the bottom end of the exhaust pipe 518 passes through the top of the connecting plate 509. The outer side of the exhaust pipe 518 is fixedly connected to the top of the connecting plate 509, so that the air drawn in by the small fan 516 can be filtered by the dust screen and then transported to the inside of the air supply pipe 517, and then discharged through the two exhaust pipes 518 to blow air and dissipate heat to the polymer flame retardant plastic particles inside the lower hopper 508, so that it can play a cooling role.

[0033] In this embodiment, the conveying component is a structure for uniformly conveying polymer flame-retardant plastic particles.

[0034] like Figure 1 and Figure 3 As shown, the conveying assembly includes a feed pipe 501 fixed to the top of the extruder body 201, two light curtain sensors 502 fixedly installed inside the feed pipe 501, a conveying cylinder 503 fixed to the top of the support plate 4, a rotating rod 504 rotatably connected to the inner side of the conveying cylinder 503 through a bearing, a spiral blade 505 fixed to the outer side of the rotating rod 504, and a first driving mechanism 506 fixedly installed on the right side of the conveying cylinder 503.

[0035] It should be noted that the first drive mechanism 506 can be a servo motor. The output shaft of the first drive mechanism 506 passes through the right side of the conveying cylinder 503 and is fixedly connected to the right end of the rotating rod 504. The conveying cylinder 503 is tilted to the lower left, so that the first drive mechanism 506 can drive the rotating rod 504 to rotate, thereby allowing the polymer flame-retardant plastic particles inside the conveying cylinder 503 to enter the interior of the feed pipe 501 under the push of the spiral blade 505.

[0036] In this embodiment, the extrusion mechanism 200 is a structure for plasticizing high molecular flame retardant plastic particles and extruding them into shape.

[0037] like Figure 1 As shown, the extrusion mechanism 200 includes an extruder body 201 fixedly mounted on the top of the fixing seat 1 , and a heating mechanism 202 fixedly mounted on the outside of the extruder body 201 and used for heating the polymer flame-retardant plastic particles inside the extruder body 201 .

[0038] It should be noted that the inner side of the extruder body 201 is rotatably connected to an extrusion screw via a bearing, and a power mechanism for driving the extrusion screw is fixedly installed on the right side of the extruder body 201. The extrusion screw is an extrusion structure in an existing screw extruder. The power mechanism can be a servo motor, and the output shaft of the power mechanism passes through the right side of the extruder body 201 and is fixedly connected to the right end of the extrusion screw.

[0039] In addition, the heating end of the heating mechanism 202 passes through the outside of the extruder body 201 and extends to the inside of the extruder body 201. The heating mechanism 202 can be an electric heater, and the heating end is a metal end for heat conduction, so that it can heat the polymer flame retardant plastic particles inside the extruder body 201 to melt them for easy plasticization.

[0040] The working principle of the above embodiment is:

[0041] When the polymer flame retardant plastic particles are extruded, the polymer flame retardant plastic particles are poured into the lower hopper 508, the second driving mechanism 510 is started, and the driven bevel gear 513 is driven to rotate by the active bevel gear 511, so that the transmission rod 512 rotates, and the polymer flame retardant plastic particles in the lower hopper 508 and the lower barrel 507 can be stirred by the cooperation between the push rod 514 and the tilt rod 515, so that they will not be in a static state for a long time, and the small fan 516 is started, and the polymer flame retardant plastic particles in the lower hopper 508 can be stirred by the cooperation between the air supply pipe 517 and the two exhaust pipes 518. The particles are cooled by blowing air, which has a cooling effect. The first driving mechanism 506 is started to drive the rotating rod 504 to rotate. The polymer flame retardant plastic particles inside the conveying cylinder 503 are pushed to move under the conveying action of the spiral blade 505, and the polymer flame retardant plastic particles are allowed to enter the extruder body 201 through the feeding pipe 501. Under the action of the light curtain sensor 502, it is also convenient to judge whether there are polymer flame retardant plastic particles passing through, which is convenient for the staff to operate. The extruder body 201 and the heating mechanism 202 are started, and the polymer flame retardant plastic particles inside the extruder body 201 can be heated and extruded.

[0042] Compared with the prior art, the polymer flame-retardant plastic particle extrusion device, through the cooperation between the extrusion mechanism 200 on the top of the fixed seat 1 and the feeding mechanism 500, can continuously apply external force to the plastic particles at the feed port, so that it is not easy for them to stick together due to melting while standing still. At the same time, the continuous introduction of external air allows the plastic particles at the feed port to be cooled to a certain extent, thereby further reducing the possibility of sticking and clogging, which is beneficial to the normal feeding of plastic particles, and enables the extrusion of plastic particles to be carried out efficiently and normally, thereby effectively improving the practicality of the plastic particle extrusion device, and solving the problem that the existing plastic particle extruder is prone to melting to varying degrees due to heat transfer during feeding, thereby easily sticking together and blocking the feed port without applying external force.

[0043] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The provision of power supply is common knowledge in the field. The main controller can be a conventional known device for control such as a computer, which can be realized through simple programming by technicians in the field. They are all existing public power connection technologies and will not be described in detail in the article.

[0044] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0045] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A polymer flame retardant plastic particle extrusion device, comprising a fixing seat (1), characterized in that: An extrusion mechanism (200) for extruding plastic particles is installed on the top of the fixed seat (1), four support rods (3) are fixed on the top of the fixed seat (1), a support plate (4) is fixed between the top ends of the four support rods (3), and a feeding mechanism (500) for smooth feeding is installed on the top of the support plate (4); The unloading mechanism (500) comprises a conveying component for conveying polymer flame-retardant plastic particles and a feeding component for feeding; the feeding component is arranged on the top of the conveying component; The feeding assembly comprises a lower barrel (507), a lower hopper (508) fixed to the top of the lower barrel (507), a connecting plate (509) fixed to the top of the lower hopper (508), a second driving mechanism (510) fixedly mounted on the top of the connecting plate (509), an active bevel gear (511) fixedly mounted on the output shaft of the second driving mechanism (510), a transmission rod (512) rotatably connected to the bottom of the connecting plate (509) via a bearing, and a drive rod (512) fixedly mounted on the output shaft of the second driving mechanism (510). A driven bevel gear (513) on the outside of the rod (512), a plurality of push rods (514) fixed on the outside of the transmission rod (512), a tilting rod (515) fixed on the outside of the transmission rod (512) and located inside the lower hopper (508), a small fan (516) fixedly mounted on the top of the connecting plate (509), an air supply pipe (517) fixedly mounted on the air outlet end of the small fan (516), and two exhaust pipes (518) fixedly mounted on the bottom of the air supply pipe (517).

2. The polymer flame retardant plastic particle extrusion device according to claim 1, characterized in that: The conveying assembly includes a feed pipe (501) fixed to the top of the extruder body (201), two light curtain sensors (502) fixedly installed inside the feed pipe (501), a conveying cylinder (503) fixed to the top of the support plate (4), a rotating rod (504) rotatably connected to the inner side of the conveying cylinder (503) through a bearing, a spiral blade (505) fixed to the outer side of the rotating rod (504), and a first driving mechanism (506) fixedly installed on the right side of the conveying cylinder (503).

3. The polymer flame retardant plastic particle extrusion device according to claim 1, characterized in that: The extrusion mechanism (200) comprises an extruder body (201) fixedly mounted on the top of a fixing seat (1), and a heating mechanism (202) fixedly mounted on the outside of the extruder body (201) and used for heating polymer flame-retardant plastic particles inside the extruder body (201).

4. The polymer flame retardant plastic particle extrusion device according to claim 3, characterized in that: The inner side of the extruder body (201) is rotatably connected to an extrusion screw via a bearing, and a power mechanism for driving the extrusion screw is fixedly installed on the right side of the extruder body (201), and the heating end of the heating mechanism (202) passes through the outer side of the extruder body (201) and extends to the interior of the extruder body (201).

5. The polymer flame retardant plastic particle extrusion device according to claim 2, characterized in that: The output shaft of the first driving mechanism (506) passes through the right side of the conveying cylinder (503) and is fixedly connected to the right end of the rotating rod (504); the conveying cylinder (503) is arranged to be inclined toward the lower left.

6. The polymer flame retardant plastic particle extrusion device according to claim 1, characterized in that: The top end of the transmission rod (512) passes through the top of the connecting plate (509), the left side of the driving bevel gear (511) and the right side of the driven bevel gear (513) are meshed with each other, and a plurality of the pushing rods (514) are distributed between the interior of the lower hopper (508) and the interior of the lower barrel (507).

7. The polymer flame-retardant plastic particle extrusion device according to claim 1, characterized in that: The outer side of the tilting rod (515) fits with the inner side of the lower hopper (508), a dust screen is fixedly installed on the air inlet end of the small fan (516), the bottom end of the exhaust pipe (518) passes through the top of the connecting plate (509), and the outer side of the exhaust pipe (518) is fixedly connected to the top of the connecting plate (509).

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