Halogen-free flame-retardant engineering plastic extruder

Abstract

The utility model discloses a halogen-free flame-retardant engineering plastic extruder which comprises an extrusion cylinder, a feed hopper is arranged at a feed port of the extrusion cylinder, an extrusion screw is rotatably connected in the extrusion cylinder, and the halogen-free flame-retardant engineering plastic extruder further comprises a feeding mechanism; the feeding mechanism comprises a rotating column, material stirring plates and a material blocking shell, the material blocking shell and the rotating column are rotationally connected to the interior of the feeding hopper, the material stirring plates are arranged in the middle of the outer arc face of the rotating column, the material blocking shell is arranged in the middle of the inner arc face of the feeding hopper, and the lower end of the material blocking shell is of an opening structure and communicates with a vertical pipe of the feeding hopper. In the feeding process, part of raw materials are separated independently, the influence of raw material accumulation on feeding can be reduced, feeding of the halogen-free flame-retardant engineering plastic extruder is more accurate and stable, a feeding component and an extrusion screw work synchronously, feeding of halogen-free flame-retardant engineering plastic production raw materials is more uniform, and the production efficiency of halogen-free flame-retardant engineering plastic is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of halogen -free flame -retardant engineering plastics, concretely is a kind of halogen -free flame -retardant engineering plastics extruder. BACKGROUND

[0002] Halogen-free flame-retardant engineering plastics refers to engineering plastics without halogen elements such as chlorine and bromine, which do not release harmful gases or produce toxic substances during combustion, reducing the potential harm to human health. This plastic material has significant advantages in environmental protection, low toxicity, thermal stability and flame retardant performance. In the prior art, a halogen-free flame-retardant engineering plastics twin-screw extruder is disclosed in CN 221540610 U, which includes a base and a movable plate. The base is externally provided with a movable plate, and the movable plate is mounted with a twin-screw extruder body at its top end. A conveying frame is provided on the outside of the base on one side of the twin-screw extruder body. A first support arm is symmetrically arranged inside the base below the movable plate. The first support arm is mounted with a lower support shaft at its end close to the base, and the first support arm is movably connected to the base through the lower support shaft. An upper movable wheel is movably mounted at the top end of the first support arm, and the upper movable wheel is slidably connected to the movable plate. Although the halogen-free flame-retardant engineering plastics can be formed and extruded, the raw materials in the feeding hopper enter the extrusion cylinder mainly by gravity during the working process. When the raw materials in the feeding hopper accumulate too much, the feeding speed of the raw materials will decrease due to the interaction between the raw materials, which will affect the production efficiency of the halogen-free flame-retardant engineering plastics. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a halogen-free flame-retardant engineering plastics extruder. The halogen-free flame-retardant engineering plastics extruder can separately separate part of the raw materials during the feeding process, reduce the impact of raw material accumulation on feeding, make the feeding of the halogen-free flame-retardant engineering plastics extruder more accurate and stable, improve the production efficiency of the halogen-free flame-retardant engineering plastics, and effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a halogen-free flame-retardant engineering plastics extruder, including extrusion cylinder, the feeding hopper is equipped at the feeding port of extrusion cylinder, and the extrusion screw is rotatably connected inside extrusion cylinder, further including feeding mechanism;

[0005] Feeding mechanism: It includes a rotating column, a feeding plate, and a baffle shell. The rotating column is rotatably connected to the inside of the feeding hopper. The feeding plate is located in the middle of the outer arc surface of the rotating column. The baffle shell is located in the middle of the inner arc surface of the feeding hopper. The lower end of the baffle shell is open and connected to the vertical pipe of the feeding hopper. The right end of the outer arc surface of the baffle shell is also open. The feeding plate and the baffle shell are installed together. The extrusion screw is drivenly connected to the rotating column. Through the cooperation of the feeding plate and the baffle shell, some raw materials are separated during the feeding process. Compared with the raw materials entering the extruder directly by their own weight, the impact of raw material accumulation on feeding can be reduced, making the feeding of halogen-free flame-retardant engineering plastic extruder more accurate and stable. Through the drive connection between the feeding component and the extrusion screw, the feeding component and the extrusion screw work synchronously, making the feeding of raw materials for halogen-free flame-retardant engineering plastic production more uniform and improving the production efficiency of halogen-free flame-retardant engineering plastics.

[0006] Furthermore, a PLC controller is provided on the front surface of the base of the extrusion cylinder. The input terminal of the PLC controller is electrically connected to an external power source to control the start and stop of the entire device.

[0007] Furthermore, the right end of the extrusion screw extends through the interior of the extrusion cylinder and is equipped with a bevel gear. A rotary motor is installed in the mounting groove on the right side of the extrusion cylinder base. Both the output shaft end of the rotary motor and the right end of the feeding mechanism are equipped with drive bevel gears, which are meshed with the bevel gear. The input end of the rotary motor is electrically connected to the output end of the PLC controller, so that the extrusion screw and the feeding mechanism work synchronously.

[0008] Furthermore, the feeding mechanism also includes a spiral conveyor plate, which is disposed at the lower end of the outer arc surface of the rotating column. The spiral conveyor plate is in contact with the inner arc surface of the feed hopper vertical pipe to push the raw material for feeding.

[0009] Furthermore, the feeding mechanism also includes a push plate, which is disposed on the upper end of the outer arc surface of the rotating column. The outer arc surface of the baffle shell and the inner arc surface of the feed hopper are both in contact with the push plate, pushing the raw material from the opening at the right end of the outer arc surface of the baffle shell into the interior of the baffle shell.

[0010] Furthermore, the feeding mechanism also includes a horizontal column, a first bevel gear, a vertical column, and a second bevel gear. The left end of the horizontal column and the upper end of the rotating column are each provided with a first bevel gear, and the two first bevel gears are meshed together. The right end of the horizontal column and the upper end of the vertical column are each provided with a second bevel gear, and the two second bevel gears are meshed together. The driving bevel gears are respectively located at the end of the output shaft of the rotary motor and the lower end of the vertical column, connecting the rotating column and the driving component.

[0011] Further, the right end of the extrusion cylinder is provided with a protective shell, the horizontal column and the vertical column are respectively rotatably connected to the rotating support plates in the inner wall of the protective shell, the upper end of the rotating column is rotatably connected to the rotating groove of the protective shell, the driving bevel gear, the bevel gear plate, the horizontal column, the first bevel gear, the vertical column and the second bevel gear are all located in the interior of the protective shell, and the transmission components are hidden and protected.

[0012] Compared with the prior art, the no-halogen flame-retardant engineering plastic extruder has the following advantages.

[0013] 1. By cooperation of the material shifting plate and the material blocking shell, part of the raw materials is separately separated during the feeding process, compared with that the raw materials directly enter the interior of the extruder by gravity, the influence of raw material accumulation on feeding can be reduced, the feeding of the no-halogen flame-retardant engineering plastic extruder is more accurate and stable, and the production efficiency of the no-halogen flame-retardant engineering plastic is improved.

[0014] 2. By driving connection of the feeding component and the extrusion screw, the feeding component and the extrusion screw work synchronously, the feeding of the no-halogen flame-retardant engineering plastic production raw materials is more uniform, and the production efficiency of the no-halogen flame-retardant engineering plastic is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the utility model overall device front view section;

[0017] Figure 3 It is a structural schematic diagram of the utility model A place amplification structure;

[0018] Figure 4 It is a structural schematic diagram of the utility model feeding mechanism;

[0019] Figure 5 It is a structural schematic diagram of the utility model material blocking shell overhead section.

[0020] In the drawing: 1 extrusion cylinder, 2 feeding hopper, 3 extrusion screw, 4 feeding mechanism, 41 rotating column, 42 material shifting plate, 43 material blocking shell, 44 spiral material conveying piece, 45 push plate, 46 horizontal column, 47 first bevel gear, 48 vertical column, 49 second bevel gear, 5 driving bevel gear, 6 bevel gear plate, 7 rotating angle motor, 8 PLC controller, 9 protective shell. DETAILED DESCRIPTION

[0021] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figures 1-5 The embodiment provides a technical scheme: a halogen-free flame-retardant engineering plastic extruder, which comprises an extrusion cylinder 1, the lower end of the extrusion cylinder 1 is provided with a base, which provides support for the setting of the extruder, the middle part of the extrusion cylinder 1 is provided with a heating component, the heating component can be an electric heating pipe, which heats the halogen-free flame-retardant engineering plastic raw material in the extrusion cylinder 1 to make it enter a molten state, the left end of the extrusion cylinder 1 is provided with an extrusion head, which limits the extrusion shape of the raw material, the feeding port of the extrusion cylinder 1 is provided with a feeding hopper 2, which facilitates the halogen-free flame-retardant engineering plastic raw material to enter the inside of the extrusion cylinder 1, the inside of the extrusion cylinder 1 is rotatably connected with an extrusion screw 3, the rotation of the extrusion screw 3 applies a force to the raw material, and pushes the raw material in the molten state to be extruded from the extrusion head at the left end of the extrusion cylinder 1, the front surface of the base of the extrusion cylinder 1 is provided with a PLC controller 8, the input end of the PLC controller 8 is electrically connected to an external power supply, the starting and stopping of the whole device are controlled, the right end of the rod body of the extrusion screw 3 penetrates the inside of the extrusion cylinder 1 and is provided with a bevel gear 6, a corner motor 7 is arranged in the mounting groove on the right side surface of the base of the extrusion cylinder 1, the right end of the output shaft of the corner motor 7 and the feeding mechanism 4 are both provided with a driving bevel gear 5, the driving bevel gears 5 are both meshed and connected with the bevel gear 6, the input end of the corner motor 7 is electrically connected to the output end of the PLC controller 8, the corner motor 7 is started, the output shaft of the corner motor 7 drives the driving bevel gear 5 on the lower side to rotate, the meshing connection of the driving bevel gear 5 and the bevel gear 6 makes the bevel gear 6 and the driving bevel gear 5 on the upper side rotate synchronously, power is provided for the work of the extrusion screw 3 and the feeding mechanism 4, the extrusion screw 3 and the feeding mechanism 4 work synchronously, the uniformity and stability of feeding are ensured, and the feeding mechanism 4 is further included.

[0023] The feeding mechanism 4 comprises a rotating column 41, a pushing plate 42 and a blocking shell 43. The rotating column 41 is rotationally connected to the inside of the feeding hopper 2. The outer arc surface of the rotating column 41 is provided with the pushing plate 42. The blocking shell 43 is arranged in the middle of the inner arc surface of the feeding hopper 2. The lower end of the blocking shell 43 is an open structure and is connected to the vertical pipe of the feeding hopper 2. The outer arc surface of the right end of the blocking shell 43 is an open structure. The pushing plate 42 is installed in cooperation with the blocking shell 43. The extrusion screw 3 is drivingly connected to the rotating column 41. The feeding mechanism 4 further comprises a spiral conveying piece 44. The spiral conveying piece 44 is arranged at the lower end of the outer arc surface of the rotating column 41 and is attached to the inner arc surface of the vertical pipe of the feeding hopper 2. The feeding mechanism 4 further comprises a push plate 45. The push plate 45 is arranged at the upper end of the outer arc surface of the rotating column 41. The outer arc surface of the blocking shell 43 and the inner arc surface of the feeding hopper 2 are attached to the push plate 45. The feeding mechanism 4 further comprises a horizontal column 46, a bevel gear one 47, a vertical column 48 and a bevel gear two 49. The left end of the horizontal column 46 and the upper end of the rotating column 41 are each provided with a bevel gear one 47. The two bevel gear ones 47 are meshingly connected. The right end of the horizontal column 46 and the upper end of the vertical column 48 are each provided with a bevel gear two 49. The two bevel gear twos 49 are meshingly connected. The driving bevel gears 5 are arranged at the output shaft end of the corner motor 7 and the lower end of the vertical column 48, respectively. The right end of the extrusion cylinder 1 is provided with a protective shell 9. The horizontal column 46 and the vertical column 48 are rotationally connected to the rotating support plates in the inner wall of the protective shell 9. The upper end of the rotating column 41 is rotationally connected to the rotating groove of the protective shell 9. The driving bevel gears 5, the bevel gears 6, the horizontal column 46, the bevel gear one 47, the vertical column 48 and the bevel gear two 49 are all located inside the protective shell 9. When the upper driving bevel gear 5 rotates, it drives the vertical column 48 to rotate. Through the meshing of the two bevel gear twos 49 and the meshing of the two bevel gear ones 47, the horizontal column 46 and the rotating column 41 also rotate. The rotating column 41 drives the push plate 45 to rotate, which pushes the raw materials in the feeding hopper 2 to move to the opening at the right end of the blocking shell 43. Through the mutual pushing of the raw materials, the raw materials enter the gap between the adjacent two pushing plates 42 through the opening at the right end of the outer arc surface of the blocking shell 43. At the same time, the rotating column 41 drives the pushing plate 42 to rotate. The pushing plate 42 pushes the raw materials to move in the blocking shell 43. The pushing plate 42 and the inner arc surface of the blocking shell 43 cooperate to separately separate the raw materials, reducing the influence of raw material accumulation on the feeding. Under the action of the weight of the raw materials, the separated raw materials smoothly enter the vertical pipe of the feeding hopper 2 and are pushed into the extrusion cylinder 1 from the vertical pipe of the feeding hopper 2 along with the rotation of the spiral conveying piece 44, ensuring the stability and accuracy of the feeding.

[0024] The working principle of the halogen-free flame-retardant engineering plastic extruder is as follows: in the production process of the halogen-free flame-retardant engineering plastic, the halogen-free flame-retardant engineering plastic raw materials are poured into the inside of the feeding hopper 2, the corner motor 7 is started through the PLC controller 8, the output shaft of the corner motor 7 drives the lower driving bevel gear 5 to rotate, the meshing connection of the driving bevel gear 5 and the bevel gear plate 6 enables the bevel gear plate 6 and the upper driving bevel gear 5 to rotate synchronously, the bevel gear plate 6 drives the extrusion screw 3 to rotate, the raw materials in the extrusion cylinder 1 are pushed to move to the left, the raw materials are heated by the heating component in the inside of the extrusion cylinder 1, and finally are extruded from the extrusion head at the left end of the extrusion cylinder 1; in the extrusion process, the rotation of the upper driving bevel gear 5 drives the vertical column 48 to rotate, the meshing of the two bevel gears two 49 and the meshing of the two bevel gears one 47 enable the horizontal column 46 and the rotating column 41 to rotate, the rotating column 41 drives the push plate 45 to rotate, the raw materials in the feeding hopper 2 are pushed to move to the opening at the right end of the material blocking shell 43, the raw materials are pushed to enter the gap between the adjacent two material pushing plates 42 through the opening at the right end of the outer arc surface of the material blocking shell 43, meanwhile, the rotating column 41 drives the material pushing plate 42 to rotate, the raw materials are pushed to move in the material blocking shell 43 by the material pushing plate 42, the raw materials are separately separated by the cooperation of the material pushing plate 42 and the inner arc surface of the material blocking shell 43, the influence of the raw material accumulation on the feeding is reduced, under the action of the self weight of the raw materials, the separated raw materials smoothly enter the vertical pipe of the feeding hopper 2, and the raw materials are pushed to enter the extrusion cylinder 1 from the vertical pipe of the feeding hopper 2 under the rotation of the spiral material conveying piece 44.

[0025] It is worth noting that the PLC controller 8 disclosed in the above embodiment can select the PLC controller of the IVC1 model, and the corner motor 7 can be freely configured according to the actual application scene, and it is recommended to select the corner motor of the GK97-86.52-YVP132M-4-7.5KW model, and the method commonly used in the prior art is adopted for the PLC controller 8 to control the work of the corner motor 7.

[0026] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion obtained by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A halogen-free flame-retardant engineering plastic extruder, comprising an extrusion cylinder (1), a feeding hopper (2) is arranged at the feeding port of the extrusion cylinder (1), and an extrusion screw (3) is rotatably connected to the inside of the extrusion cylinder (1), characterized in that: It also includes a feeding mechanism (4); The feeding mechanism (4) comprises a rotating column (41), a poking plate (42) and a blocking shell (43). The rotating column (41) is rotationally connected to the inside of the feeding hopper (2). The outer arc surface of the rotating column (41) is provided with the poking plate (42) respectively. The blocking shell (43) is arranged in the middle of the inner arc surface of the feeding hopper (2). The lower end of the blocking shell (43) is an open structure and is connected with the vertical pipe of the feeding hopper (2). The outer arc surface of the right end of the blocking shell (43) is an open structure. The poking plate (42) is installed in cooperation with the blocking shell (43). The extrusion screw (3) is drivingly connected with the rotating column (41).

2. A halogen-free flame-retardant engineering plastic extruder according to claim 1, characterized in that: The front surface of the base of the extrusion cylinder (1) is provided with a PLC controller (8). The input end of the PLC controller (8) is electrically connected with an external power supply.

3. A halogen-free flame-retardant engineering plastic extruder according to claim 2, characterized in that: The right end of the rod body of the extrusion screw (3) penetrates the inside of the extrusion cylinder (1) and is provided with a bevel gear (6). The right side of the base of the extrusion cylinder (1) is provided with a corner motor (7). The output shaft end of the corner motor (7) and the right end of the feeding mechanism (4) are provided with driving bevel gears (5). The driving bevel gears (5) are meshingly connected with the bevel gear (6). The input end of the corner motor (7) is electrically connected with the output end of the PLC controller (8).

4. A halogen-free flame-retardant engineering plastic extruder according to claim 1, characterized in that: The feeding mechanism (4) further comprises a spiral conveying piece (44). The spiral conveying piece (44) is arranged at the lower end of the outer arc surface of the rotating column (41) and is attached to the inner arc surface of the vertical pipe of the feeding hopper (2).

5. A halogen-free flame retardant engineering plastic extruder according to claim 1, characterized in that: The feeding mechanism (4) further comprises a push plate (45). The push plate (45) is arranged at the upper end of the outer arc surface of the rotating column (41) and is attached to the inner arc surface of the feeding hopper (2).

6. A halogen-free flame-retardant engineering plastic extruder according to claim 3, characterized in that: The feeding mechanism (4) further comprises a horizontal column (46), a bevel gear one (47), a vertical column (48) and a bevel gear two (49). The left end of the horizontal column (46) and the upper end of the rotating column (41) are provided with the bevel gear one (47). The two bevel gears one (47) are meshingly connected. The right end of the horizontal column (46) and the upper end of the vertical column (48) are provided with the bevel gear two (49). The two bevel gears two (49) are meshingly connected. The driving bevel gears (5) are respectively arranged at the output shaft end of the corner motor (7) and the lower end of the vertical column (48).

7. A halogen-free flame-retardant engineering plastic extruder according to claim 6, characterized in that: The right end of the extrusion cylinder (1) is provided with a protective shell (9). The horizontal column (46) and the vertical column (48) are respectively rotationally connected to the rotating support plates of the inner wall of the protective shell (9). The upper end of the rotating column (41) is rotationally connected with the rotating groove of the protective shell (9). The driving bevel gears (5), the bevel gear (6), the horizontal column (46), the bevel gear one (47), the vertical column (48) and the bevel gear two (49) are all located in the inside of the protective shell (9).

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