A polyphenylene ether extrusion cutting molding apparatus

Abstract

This utility model discloses a polyphenylene ether extrusion cutting molding equipment, including an extruder. A limiting mechanism is set at the upper end of one side of the extruder. The limiting mechanism is used to adjust the raw material feed rate. The limiting mechanism includes a feed hopper set at the upper end of one side of the extruder. A support frame is symmetrically set at the upper end of the feed hopper. A threaded sleeve is connected to the upper end of the support frame. By rotating the turntable, the screw and the limiting block are rotated, which facilitates the adjustment of the height position of the limiting block. The raising and lowering of the limiting block can change the cross-sectional area of ​​the raw material flow inside the feed hopper, fine-tune the feed rate, match the polyphenylene ether extrusion plasticizing requirements, stabilize the pressure build-up, and reduce fluctuations. By rotating and removing the screw, the maintenance cover is unrestrained, and the handle can be moved outward to remove the maintenance cover, so that maintenance personnel can perform maintenance on the inside of the extruder. The design of the observation window can realize visual monitoring of the extruder without stopping, early warning of faults, high debugging efficiency, and safer operation, reducing costs and increasing efficiency while improving the practicality of the equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of polyphenylene ether processing equipment, specifically a polyphenylene ether extrusion cutting molding equipment. Background Technology

[0002] Polyphenylene oxide (PPE) possesses excellent heat resistance, mechanical strength, dimensional stability, and electrical insulation properties, and is widely used in automotive, electronics, and office equipment industries. This type of material is typically mass-produced using extrusion granulation and extrusion cutting processes. The material is melt-plasticized and homogenized in an extruder, then extruded and pelletized into uniform granules by a pelletizing device.

[0003] The extrusion and cutting of polyphenylene oxide (PPE) typically involves continuous processes such as heating and melting, screw conveying, die extrusion, and pelletizing. The equipment operates under specific temperature, pressure, and mechanical movement coupling conditions. Unstable feeding, uneven plasticization, or localized material stagnation can easily lead to problems such as pressure fluctuations within the barrel, material scorching, die head accumulation, and poor extrusion. In severe cases, this can further induce safety hazards such as material spraying, localized overheating, abnormal decomposition, and the release of harmful gases. These issues not only affect product quality but also adversely impact the working environment, equipment stability, and the occupational health and safety of personnel on site.

[0004] Existing polyphenylene ether (PPE) extrusion cutting molding equipment has a fixed feed channel cross-sectional area, which cannot adjust the feed speed in real time according to the extrusion conditions. This easily leads to overfeeding or underfeeding, resulting in large fluctuations in extrusion pressure, uneven material plasticization, and affecting the quality of granule molding. Furthermore, existing equipment lacks convenience for observing and maintaining the internal operating status of the extruder. When problems such as material scorching, blockage, impurity inclusions, and screw and bushing wear occur inside the extruder, timely visual inspection and rapid handling are often impossible. The entire extruder must be disassembled, which is cumbersome, time-consuming, and labor-intensive. This not only increases downtime losses but also increases the risk of personnel coming into contact with high-temperature components, residual materials, and abnormally released gases during maintenance. Utility Model Content

[0005] The purpose of this invention is to provide a polyphenylene ether extrusion cutting molding device to solve the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a polyphenylene ether extrusion cutting and molding equipment, including an extruder, a limiting mechanism is provided at the upper end of one side of the extruder, the limiting mechanism is used to adjust the raw material feed rate, the limiting mechanism includes a feed hopper provided at the upper end of one side of the extruder, a support frame is symmetrically provided at the upper end of the feed hopper, a threaded sleeve is connected to the upper end of the support frame, a screw is threadedly connected to the inside of the threaded sleeve, a turntable is connected to the upper end of the screw, a slider is connected to the lower end of the screw, and a limiting block is slidably sleeved on the outer side of the slider;

[0007] The extruder is symmetrically provided with detachable mechanisms on both sides. The detachable mechanisms are used to facilitate maintenance personnel to perform maintenance on the inside of the extruder. The detachable mechanisms include maintenance covers that are symmetrically attached to both sides of the extruder. Screws are fitted inside the maintenance covers. Observation windows are symmetrically provided inside the maintenance covers. Handles are provided on the outer side of the maintenance covers.

[0008] The metal body of the extruder is reliably grounded by connecting to the standard grounding grid of the factory area through grounding bolts. In conjunction with the antistatic coating applied to the inner wall of the feed hopper and the inner wall of the feed section of the extruder, static electricity generated during material conveying is eliminated, preventing the risk of dust explosion.

[0009] The outer wall of the extruder is wrapped with a heat insulation layer to prevent burns. The heat insulation layer is made of high temperature resistant and flame retardant material, and a high temperature warning label is affixed to the outer surface to prevent operators from directly contacting the high temperature cylinder and causing burns. The extruder is equipped with an extrusion and filtration mechanism, which is used for extruding polyphenylene ether and filtering harmful gases generated during extrusion.

[0010] An emergency stop button is provided on one side of the extruder. The emergency stop circuit adopts an independent safety circuit. When triggered, it immediately cuts off the motor power, stops the screw rotation, and closes the feeding channel and heating system, thus achieving a safe shutdown of the entire machine.

[0011] The extruder barrel is equipped with temperature and pressure sensors. The signals from the temperature and pressure sensors are connected to a PLC safety control system. The system has preset high temperature alarm thresholds and overpressure shutdown thresholds to achieve over-temperature interlock to stop the heater and overpressure automatic shutdown interlock protection.

[0012] Preferably, a limiting block is fitted inside the feed hopper, and a threaded hole is provided inside the threaded sleeve.

[0013] Preferably, a screw is sleeved inside the feed hopper, and a limiting block is slidably connected to the lower end of the screw.

[0014] Preferably, the extruder has an internal threaded connection screw, and one end of the maintenance cover is tightly attached to a support cover.

[0015] Preferably, the extrusion and filtration mechanism includes a motor mounted on one end of the extruder, the motor shaft connected to an auger, an extrusion head and a cutter at the other end of the extruder, a filter at the upper side of one side of the extruder, a connecting pipe at one side of the filter, a support cover at the lower end of the connecting pipe, an auger sleeved inside the extruder, the support cover covering the extrusion head and the cutter, a cutter at one end of the extrusion head, and a support cover at one end of the extruder.

[0016] Preferably, the support cover is a fully enclosed explosion-proof safety cover with an observation hole. The support cover prevents the material from being ejected under pressure due to a failure in the seal of the extruder head, thus avoiding accidents that could cause injury.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This polyphenylene ether extrusion cutting molding equipment drives the screw and limiting block to rotate by rotating the turntable, which facilitates the adjustment of the height position of the limiting block. By raising and lowering the limiting block, the cross-sectional area of ​​the raw material flow inside the feed hopper can be changed, the feeding rate can be finely adjusted, and the extrusion plasticization requirements of polyphenylene ether can be matched. This stabilizes the pressure build-up and reduces fluctuations, thereby reducing safety hazards such as material blockage, scorching, and pressure fluctuations caused by abnormal feeding.

[0019] By turning the screws to remove the screws, the maintenance cover is freed, allowing the handle to be moved outwards to remove it. This enables maintenance personnel to perform internal maintenance on the extruder. The observation window design allows for continuous visual monitoring of the extruder, facilitating early detection of abnormal operating conditions and reducing the risks of high-temperature contact and material / gas exposure caused by frequent machine openings, making operation safer.

[0020] Temperature and pressure sensors, along with a PLC safety controller, enable integrated online monitoring, alarm, and interlocking shutdown for safe operation. Automatic over-temperature alerts and immediate over-pressure shutdowns effectively prevent major safety accidents such as overheating, cylinder explosions, and material spraying. An independent emergency stop button allows for one-button shutdown in emergencies, maximizing the safety of on-site operators.

[0021] The fully enclosed explosion-proof safety cover completely isolates the extrusion and cutting operation areas, preventing material splashes from injuring people and ensuring the safety of the work area through isolation and protection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is an enlarged perspective view of the material limiting block of this utility model;

[0024] Figure 3 This is an enlarged sectional perspective view of the extruder of this utility model.

[0025] In the diagram: 1 Extruder, 11 Feed hopper, 12 Support frame, 13 Threaded sleeve, 14 Screw, 15 Turntable, 16 Slider, 17 Material limiter, 2 Maintenance cover, 21 Screw, 22 Observation window, 23 Handle, 3 Motor, 31 Screw conveyor, 32 Extrusion head, 33 Cutting machine, 34 Filter, 35 Connecting pipe, 36 Support cover, 41 Temperature sensor, 42 Pressure sensor, 43 PLC safety controller, 44 Emergency stop button, 45 Anti-scalding heat insulation layer, 46 Anti-static coating. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 , Figure 2 and Figure 3 The figure shows a polyphenylene ether extrusion cutting molding equipment, including an extruder 1. A limiting mechanism is provided at the upper end of one side of the extruder 1. The limiting mechanism is used to adjust the raw material feed amount. The limiting mechanism includes a feed hopper 11 provided at the upper end of one side of the extruder 1. A support frame 12 is symmetrically provided at the upper end of the feed hopper 11. A threaded sleeve 13 is connected to the upper end of the support frame 12. A screw 14 is connected to the internal thread of the threaded sleeve 13. A turntable 15 is connected to the upper end of the screw 14. A slider 16 is connected to the lower end of the screw 14. A limiting block 17 is slidably sleeved on the outer side of the slider 16.

[0028] The extruder 1 is symmetrically provided with detachable mechanisms on both sides. The detachable mechanisms are used to facilitate maintenance personnel to perform maintenance on the inside of the extruder 1. The detachable mechanisms include maintenance covers 2 that are symmetrically attached to both sides of the extruder 1, screws 21 that are sleeved inside the maintenance cover 2, observation windows 22 that are symmetrically provided inside the maintenance cover 2, and handles 23 that are provided on the outer side of the maintenance cover 2.

[0029] The metal body of the extruder 1 is reliably grounded by connecting to the standard grounding grid of the factory area through grounding bolts. Combined with the antistatic coating 46 applied to the inner wall of the feed hopper 11 and the inner wall of the feed section of the extruder 1, static electricity generated during material conveying is eliminated, preventing the risk of dust explosion.

[0030] The outer wall of the extruder 1 is wrapped with a heat insulation layer 45 to prevent burns. The heat insulation layer 45 is made of high temperature resistant and flame retardant material, and a high temperature warning label is affixed to the outer surface to prevent operators from directly contacting the high temperature cylinder and causing burns. The extruder 1 is equipped with an extrusion and filtration mechanism, which is used for extruding polyphenylene ether and filtering harmful gases generated during extrusion.

[0031] An emergency stop button 44 is installed on one side of the extruder 1. The emergency stop circuit adopts an independent safety circuit. After being triggered, it immediately cuts off the motor power, stops the screw rotation, and closes the feeding channel and heating system, so as to achieve safe shutdown of the entire machine.

[0032] Temperature sensor 41 and pressure sensor 42 are installed in the barrel of extruder 1. The sensors collect temperature and pressure data in real time and transmit them to PLC safety controller 43. When the temperature or pressure exceeds the safety threshold, the system immediately activates the audible and visual alarm and automatically controls motor 3 to stop. An independent emergency stop button 44 is set in the equipment operation area. In an emergency, the power of the whole machine can be cut off with one button to achieve safe shutdown.

[0033] Please see Figure 1 and Figure 2 The feed hopper 11 is internally fitted with a limiting block 17, and the threaded sleeve 13 is internally provided with a threaded hole;

[0034] With this setup, rotating the turntable 15 drives the screw 14 and the limiting block 17 to rotate, making it easy to adjust the height position of the limiting block 17.

[0035] Please see Figure 1 and Figure 2 The feed hopper 11 is internally fitted with a screw 14, and the lower end of the screw 14 is slidably connected to a limiting block 17;

[0036] With this setup, the cross-sectional area of ​​the raw material flow inside the feed hopper 11 can be changed by raising and lowering the limiting block 17, thus fine-tuning the feeding rate to match the extrusion and plasticizing requirements of polyphenylene ether, stabilizing pressure build-up, and reducing fluctuations.

[0037] Please see Figure 1 The internal threaded connection screw 21 of the extruder 1, and the support cover 36 is tightly attached to one end of the maintenance cover 2;

[0038] With this setup, by rotating the removal screw 21, the maintenance cover 2 is freed from its restraints, making it easy to move the handle 23 outward to remove the maintenance cover 2, so that maintenance personnel can perform maintenance on the inside of the extruder 1. The design of the observation window 22 enables continuous visual monitoring of the extruder 1, early warning of faults, high efficiency in debugging, and safer operation, reducing costs and increasing efficiency while improving the practicality of the equipment.

[0039] Please see Figure 1 and Figure 3 The extrusion and filtration mechanism includes a motor 3 installed at one end of the extruder 1, with an auger 31 connected to the shaft of the motor 3, an extrusion head 32 at the other end of the extruder 1, a cutter 33 at the other end of the extruder 1, a filter 34 at the upper end of one side of the extruder 1, a connecting pipe 35 at one side of the filter 34, a support cover 36 at the lower end of the connecting pipe 35, an auger 31 inside the extruder 1, a fully enclosed explosion-proof safety cover structure for the support cover 36, an observation window installed on the cover, the support cover 36 covering the extrusion head 32, the support cover 36 covering the cutter 33, a cutter 33 at one end of the extrusion head 32, and a support cover 36 at one end of the extruder 1.

[0040] With this setup, when polyphenylene ether is extruded from the extruder 32, the filter 34 will extract and filter the harmful gases generated during the production of polyphenylene ether from the extruder 32, which can effectively reduce the concentration of harmful gases in the working area and improve the safety of the production process.

[0041] Please see Figure 1 The support cover 36 is a fully enclosed explosion-proof safety cover. The support cover 36 is equipped with an observation hole. The support cover 36 prevents the material from being ejected under pressure due to the failure of the extrusion head seal, thus avoiding accidents that could cause injury.

[0042] The working principle of this embodiment is as follows: The polyphenylene ether extrusion cutting molding equipment drives the screw 14 and the limiting block 17 to rotate by rotating the turntable 15, which facilitates the adjustment of the height position of the limiting block 17. By raising and lowering the limiting block 17, the cross-sectional area of ​​the raw material flow inside the feed hopper 11 can be changed, the feeding rate can be finely adjusted, and the extrusion plasticization requirements of polyphenylene ether can be matched to stabilize the pressure build-up and reduce fluctuations.

[0043] By rotating the removal screw 21, the maintenance cover 2 is freed from its restraints, making it easy to move the handle 23 outward to remove the maintenance cover 2, so that maintenance personnel can carry out maintenance and repairs on the inside of the extruder 1. The design of the observation window 22 enables continuous visual monitoring of the extruder 1, early warning of faults, high efficiency in debugging, and safer operation, reducing costs and increasing efficiency while improving the practicality of the equipment.

[0044] When polyphenylene ether is extruded from the extruder 32, the filter 34 will extract and filter the harmful gases generated during the production of polyphenylene ether from the extruder 32, which can effectively reduce the concentration of harmful gases in the working area and improve the safety of the production process.

[0045] During equipment operation, temperature sensor 41 and pressure sensor 42 continuously monitor the working conditions, and PLC safety controller 43 realizes automatic alarm and interlock shutdown in case of abnormality. Together with emergency stop button 44, multiple safety control defenses are built. Anti-scalding heat insulation layer 45, anti-static coating 46 and explosion-proof safety cover work together to achieve all-round safety protection against scalding and splashing, fully meeting the safety production requirements of polyphenylene ether extrusion cutting operation.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polyphenylene ether extrusion cut-to-shape apparatus characterized by: The extruder (1) is provided with a limiting mechanism on the upper side of one side of the extruder (1). The limiting mechanism is used to adjust the feed rate of raw materials. The limiting mechanism includes a feed hopper (11) provided on the upper side of one side of the extruder (1). A support frame (12) is symmetrically provided on the upper end of the feed hopper (11). A threaded sleeve (13) is connected to the upper end of the support frame (12). A screw (14) is connected to the internal thread of the threaded sleeve (13). A turntable (15) is connected to the upper end of the screw (14). A slider (16) is connected to the lower end of the screw (14). A limiting block (17) is slidably sleeved on the outer side of the slider (16). The extruder (1) is symmetrically provided with detachable mechanisms on both sides. The detachable mechanisms are used to facilitate maintenance personnel to perform maintenance on the inside of the extruder (1). The detachable mechanisms include maintenance covers (2) that are symmetrically attached to both sides of the extruder (1). Screws (21) are fitted inside the maintenance covers (2). Observation windows (22) are symmetrically provided inside the maintenance covers (2). Handles (23) are provided on the outer side of the maintenance covers (2). The metal body of the extruder (1) is reliably grounded by connecting to the standard grounding grid of the factory area through grounding bolts. In conjunction with the antistatic coating (46) applied to the inner wall of the feed hopper (11) and the inner wall of the feed section of the extruder (1), static electricity generated during material conveying is eliminated, preventing the risk of dust explosion. The extruder (1) is wrapped with a heat insulation layer (45) to prevent burns. The heat insulation layer (45) is made of high temperature resistant and flame retardant material. A high temperature warning sign is pasted on the outer surface to prevent operators from directly contacting the high temperature cylinder and causing burns. The extruder (1) is equipped with an extrusion and filtration mechanism. The extrusion and filtration mechanism is used to extrude polyphenylene ether and filter the harmful gases generated during extrusion. An emergency stop button (44) is provided on one side of the extruder (1). The emergency stop circuit adopts an independent safety circuit. After being triggered, the motor power is immediately cut off, the screw rotation is stopped, and the feeding channel and heating system are closed to achieve safe shutdown of the entire machine. The extruder (1) is equipped with a temperature sensor (41) and a pressure sensor (42) inside the barrel. The signals of the temperature sensor (41) and the pressure sensor (42) are connected to a PLC safety controller (43). The system presets a high temperature alarm threshold and an overpressure shutdown threshold to realize over-temperature interlock to stop the heater and overpressure automatic shutdown interlock protection.

2. The polyphenylene ether extrusion cutting molding equipment according to claim 1, characterized in that: The feed hopper (11) is internally fitted with a limiting block (17), and the threaded sleeve (13) is internally provided with a threaded hole.

3. The polyphenylene ether extrusion cutting molding equipment according to claim 1, characterized in that: The feed hopper (11) is internally fitted with a screw (14), and the lower end of the screw (14) is slidably connected to a limiting block (17).

4. The polyphenylene ether extrusion cutting molding equipment according to claim 1, characterized in that: The internal threaded connection screw (21) of the extruder (1) and the support cover (36) are tightly attached to one end of the maintenance cover (2).

5. The polyphenylene ether extrusion cutting molding equipment according to claim 1, characterized in that: The extrusion and filtration mechanism includes a motor (3) installed at one end of an extruder (1), a screw conveyor (31) connected to the shaft of the motor (3), an extrusion head (32) provided at the other end of the extruder (1), a cutter (33) provided at the other end of the extruder (1), a filter (34) provided at the upper end of one side of the extruder (1), a connecting pipe (35) provided at one side of the filter (34), a support cover (36) connected to the lower end of the connecting pipe (35), a screw conveyor (31) sleeved inside the extruder (1), the support cover (36) covering the extrusion head (32), the support cover (36) covering the cutter (33), a cutter (33) provided at one end of the extrusion head (32), and a support cover (36) provided at one end of the extruder (1).

6. The polyphenylene ether extrusion cutting molding equipment according to claim 5, characterized in that: The support cover (36) is a fully enclosed explosion-proof safety cover. The support cover (36) is provided with an observation hole. The support cover (36) prevents the material from being ejected under pressure due to failure of the extrusion head seal.

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