CN117601399A - Double-screw temperature control device for PET extruder - Google Patents
Double-screw temperature control device for PET extruder Download PDFInfo
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- CN117601399A CN117601399A CN202410090304.5A CN202410090304A CN117601399A CN 117601399 A CN117601399 A CN 117601399A CN 202410090304 A CN202410090304 A CN 202410090304A CN 117601399 A CN117601399 A CN 117601399A
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- 239000000463 material Substances 0.000 claims abstract description 87
- 238000010438 heat treatment Methods 0.000 claims abstract description 64
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 210000001503 joint Anatomy 0.000 claims description 70
- 238000003032 molecular docking Methods 0.000 claims description 31
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000001502 supplementing effect Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 165
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 7
- 235000017491 Bambusa tulda Nutrition 0.000 description 7
- 241001330002 Bambuseae Species 0.000 description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 7
- 239000011425 bamboo Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/802—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to the technical field of extrusion equipment, in particular to a double-screw temperature control device for a PET extruder, which is arranged on a material pipe of the extruder for conveying PET raw materials, wherein the temperature control device comprises a heating device; the heating device comprises a first oil supply pipe, a second oil supply pipe, a first heating pump and a second heating pump; the two ends of the first oil supply pipe are respectively provided with a first oil inlet pipe and a first oil outlet pipe, the first oil inlet pipe and the first oil outlet pipe are respectively positioned at the two ends of the material pipe, and the first oil inlet pipe and the first oil outlet pipe are communicated with the first heating pump through pipelines; and the two ends of the second oil supply pipe are respectively provided with a second oil inlet pipe and a second oil outlet pipe, and the second oil inlet pipe and the second oil outlet pipe are communicated with the second heating pump through pipelines. The invention realizes the accurate control of the temperature of the materials in the material pipe, reduces the material temperature difference between the discharge end and the feed end of the material barrel, improves the stability and the product quality of the production process, and solves the problem of overlarge temperature difference of the inlet and outlet oil materials caused by unidirectional flow of the circulating heating oil.
Description
Technical Field
The invention relates to the technical field of extrusion equipment, in particular to a double-screw temperature control device for a PET extruder.
Background
A screw extruder is an apparatus for extrusion molding of molten plastic or rubber. It generally consists of one or more screws of helical shape and a barrel-shaped extruder barrel. The screw feeds solid or particulate feedstock into the extruder barrel by rotation and heats and extrudes the feedstock within the barrel to melt the feedstock and form a continuous, uniform melt. The existing extruder generally adopts external heating, and internal raw materials are heated less, so that particles are easy to appear in an extruded finished product, and the processing quality is affected.
For this reason, chinese patent CN217916684U discloses a but internal heating's PET extruder, its extrusion screw is inside to be provided with a support section of thick bamboo, support section of thick bamboo inside is provided with the baffle, the baffle tip is provided with the through-hole, get into in the support section of thick bamboo and heat a support section of thick bamboo through high temperature gas to make heat transfer to the extrusion screw, and then realize extrusion section of thick bamboo internal heating, support section of thick bamboo and external heating piece simultaneous heating through extrusion section of thick bamboo inside, the heating effect improves greatly, thereby improves when guaranteeing the temperature and melts the effect, and then guarantees extrusion effect.
The PET screw extruder is mainly divided into a feeding section, a compression section and a melting section, and in the prior art, the charging barrels of the three sections are heated by circulating oil, and different temperatures are set according to the state of materials. After entering from the oil inlet, heat in the oil can be transmitted to the PET material, so that the temperature of the oil near the oil outlet is reduced, the PET material is particularly sensitive to the temperature, and the physical properties of the PET material are greatly different due to the fact that the temperature is different.
Disclosure of Invention
Aiming at the problems, the double-spiral temperature control device for the PET extruder solves the problem that the temperature difference between inlet and outlet oil materials is overlarge due to unidirectional flow of circulating heating oil through a first oil supply pipe, a second oil supply pipe, a first heater and a second heater.
In order to solve the problems in the prior art, the invention provides a double-screw temperature control device for a PET extruder, which is arranged on a material pipe of the extruder for conveying PET raw materials, wherein the temperature control device comprises a heating device; the heating device comprises a first oil supply pipe, a second oil supply pipe, a first heating pump and a second heating pump; the first oil supply pipe is in tight fit with the outer wall of the material pipe, a first oil inlet pipe and a first oil outlet pipe are respectively arranged at two ends of the first oil supply pipe, and are respectively positioned at two ends of the material pipe and communicated with the first heating pump through a pipeline; the second oil supply pipe is in tight fit with the outer wall of the material pipe, a second oil inlet pipe and a second oil outlet pipe are respectively arranged at two ends of the second oil supply pipe, and the second oil inlet pipe and the second oil outlet pipe are respectively positioned at two ends of the material pipe and are communicated with a second heating pump through pipelines; the first oil inlet pipe and the second oil outlet pipe are arranged at the same end of the material pipe.
Preferably, the first oil supply pipe and the second oil supply pipe are spirally wound on the material pipe.
Preferably, at least three temperature sensors are arranged on the material pipe, and the temperature sensors are distributed on the outer wall of the material pipe at equal intervals along the axis of the material pipe; and the outer wall of the material pipe is also provided with an oil supplementing device for supplying oil to the first oil supply pipe and the second oil supply pipe.
Preferably, the oil supplementing device comprises a slideway, a movable seat and a linear driving assembly; the slideway is arranged on the material pipe; the movable seat is slidably arranged on the slideway; two third oil supply pipes for supplying oil are arranged on the movable seat; the linear driving assembly is arranged on the slideway and used for controlling the movable seat to slide along the slideway; a butt joint mechanism is arranged on the movable seat; under the operating condition, when the temperature sensor senses that the temperature is reduced, the linear driving assembly controls the movable seat to move to the temperature sensor, and the docking mechanism controls the two third oil supply pipes to be respectively communicated with the first oil supply pipe and the second oil supply pipe.
Preferably, the docking mechanism comprises a connecting pipe and a unidirectional docking pipe; the connecting pipe is arranged below the third oil supply pipe and is communicated with the third oil supply pipe; the unidirectional butt joint pipes are provided with 2n and are uniformly distributed on the first oil supply pipe and the second oil supply pipe, wherein n is an integer greater than or equal to 2; the movable seat is provided with a control device for controlling the connection of the connecting pipe and the unidirectional butt joint pipe; the third oil supply pipe is in sliding fit with the movable seat; under the operating condition, the control device can control the third oil supply pipe on the movable seat to move downwards, the third oil supply pipe drives the connecting pipe to move synchronously, and when the connecting pipe is in abutting fit with the unidirectional butt joint pipe, the connecting pipe is communicated with the unidirectional butt joint pipe.
Preferably, the control device comprises a docking assembly and a limiting assembly; the butt joint assembly comprises a mounting seat, a butt joint block, a first elastic piece and a frame body; the mounting seat is arranged on the movable seat; the butt joint block is slidably arranged on the mounting seat; a butt joint hole matched with the butt joint block is formed in the slideway; two ends of the first elastic piece are respectively connected with the mounting seat and the butt joint block; the frame body is connected with the butt joint block and the third oil supply pipe; the limiting component is arranged on the movable seat and is used for limiting the movement of the butt joint block.
Preferably, the restraint assembly includes an extension rod, a link, and a linear actuator; the extension rod is arranged on the butt joint block; the connecting frame is movably arranged on the movable seat, and a push plate is arranged on the connecting frame; the driving end of the linear driver is connected with the connecting frame; under the operating condition, after the butt joint block is in plug-in connection with the butt joint hole, when the linear driver pushes the connecting frame to move upwards, the connecting frame drives the push plate to move, the push plate pushes the extension rod to move after being contacted with the extension rod, the first elastic piece is compressed, and the butt joint block is separated from the butt joint hole.
Preferably, a limiting ring, a bracket, a flashboard and a second elastic piece are arranged in the unidirectional butt joint pipe; the limiting ring and the bracket are connected with the inner wall of the unidirectional butt joint pipe; the bracket is positioned below the limiting ring; the outer ring of the flashboard is in sliding fit with the inner wall of the unidirectional butt joint pipe, and the flashboard is positioned between the bracket and the limiting ring; two ends of the second elastic piece are respectively connected with the bracket and the flashboard; when the flashboard is not acted by external force, the second elastic piece is in a compressed state, and the flashboard is tightly matched with the limiting ring under the elastic action of the second elastic piece.
Preferably, the linear drive assembly comprises a rotary drive and a screw; the rotary driver is arranged on the slideway, and the driving end of the rotary driver is in transmission connection with the screw; the screw rod is rotatably arranged on the slide way, and the movable seat is in threaded connection with the screw rod.
Preferably, a supporting tube is arranged in the material tube, the supporting tube is arranged in a hollow mode, and a heating tube is arranged in the supporting tube.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the first oil supply pipe, the second oil supply pipe, the first heater and the second heater realize accurate control of the temperature of the materials in the material pipe, and effectively reduce the material temperature difference between the discharge end and the feed end of the material cylinder, so that the stability and the product quality of the production process are improved, and the problem of overlarge temperature difference of the inlet and outlet oil materials caused by unidirectional flow of circulating heating oil is solved.
2. The invention skillfully combines the temperature sensor and the oil supplementing device, monitors the temperature of each point of the material pipe in real time, and accurately regulates and controls the heat supplementing according to the data. The advanced mechanism effectively prevents local temperature difference caused by uneven distribution of materials in the material pipe, and ensures uniform heating and stable treatment of the materials in the whole process.
Drawings
FIG. 1 is a schematic perspective view of a double screw temperature control device for a PET extruder.
FIG. 2 is a schematic perspective view of a tube and heating device in a double screw temperature control device for a PET extruder.
FIG. 3 is a schematic perspective view of a first oil supply pipe and a second oil supply pipe in a double helix temperature control device for a PET extruder.
Fig. 4 is an enlarged partial schematic view at a in fig. 3.
FIG. 5 is a schematic perspective view of an oil replenishment device for a double screw temperature control device of a PET extruder.
Fig. 6 is a partially enlarged schematic view at B in fig. 5.
FIG. 7 is a schematic perspective view of a movable seat and docking mechanism in a double screw temperature control device for a PET extruder.
FIG. 8 is an exploded isometric view of a docking assembly in a double helix temperature control device for a PET extruder.
FIG. 9 is a schematic perspective view of a reset assembly in a double screw temperature control device for a PET extruder.
FIG. 10 is a schematic perspective cross-sectional view of a unidirectional structure in a double screw temperature control device for a PET extruder.
FIG. 11 is a schematic perspective cross-sectional view of a tube in a double screw temperature control device for a PET extruder.
The reference numerals in the figures are: 1-a material pipe; 11-a temperature sensor; 12-supporting the tube; 121-heating the pipe; 13-spiral auger blades; 2-a heating device; 21-a first oil supply pipe; 211-a first oil inlet pipe; 212-a first flowline; 22-a second oil supply pipe; 221-a second oil inlet pipe; 222-a second flowline; 23-a first heat pump; 24-a second heat pump; 3-an oil supplementing device; 31-a slideway; 311-butt joint holes; 32-a movable seat; 321-a third oil supply pipe; 33-a linear drive assembly; 331-a rotary drive; 332-screw; 4-a docking mechanism; 41-connecting pipes; 42-one-way interfacing tube; 421-limit rings; 422-a stent; 423-flashboard; 424-a second elastic member; 5-a control device; 51-a docking assembly; 511-mount; 512-butt blocks; 513-a first elastic member; 514-frame body; 52-a limiting assembly; 521-extension bars; 522-a connection rack; 5221-push plate; 523-linear drive.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Referring to fig. 1-4: a double-screw temperature control device for a PET extruder, which is arranged on a material pipe 1 of the extruder for conveying PET raw materials, and comprises a heating device 2; the heating device 2 comprises a first oil supply pipe 21, a second oil supply pipe 22, a first heat pump 23 and a second heat pump 24; the first oil supply pipe 21 is in tight fit with the outer wall of the material pipe 1, a first oil inlet pipe 211 and a first oil outlet pipe 212 are respectively arranged at two ends of the first oil supply pipe 21, the first oil inlet pipe 211 and the first oil outlet pipe 212 are respectively positioned at two ends of the material pipe 1, and the first oil inlet pipe 211 and the first oil outlet pipe 212 are communicated with the first heating pump 23 through pipelines; the second oil supply pipe 22 is in tight fit with the outer wall of the material pipe 1, a second oil inlet pipe 221 and a second oil outlet pipe 222 are respectively arranged at two ends of the second oil supply pipe 22, the second oil inlet pipe 221 and the second oil outlet pipe 222 are respectively positioned at two ends of the material pipe 1, and the second oil inlet pipe 221 and the second oil outlet pipe 222 are communicated with the second heating pump 24 through pipelines; the first oil inlet pipe 211 and the second oil outlet pipe 222 are arranged at the same end of the material pipe 1.
According to the invention, the first oil supply pipe 21, the second oil supply pipe 22, the first heater and the second heater realize accurate control of the material temperature in the material pipe 1, and effectively reduce the material temperature difference between the discharge end and the feed end of the material barrel, so that the stability and the product quality of the production process are improved, and the problem of overlarge temperature difference between inlet and outlet oil materials caused by unidirectional flow of circulating heating oil is solved. The first heat pump 23 and the second heat pump 24 are preferably screw type heat pumps or vane type heat pumps, and the first heat pump 23 and the second heat pump 24 are electrically connected with a controller; the operator sets up temperature control device on material pipe 1 earlier, and when the PET extruder began to work, start temperature control device, and the controller starts first heat pump 23 and second heat pump 24, and the fluid after the heating is through pipeline transmission to first oil feed pipe 21 and second oil feed pipe 22, heats the material in the feed cylinder. Conventional heating devices 2 often use a single tube for heating, but this design can result in excessive temperature differences between the outlet and inlet of the tube 1, thereby affecting the physical properties of the PET feedstock. To solve this problem, we have provided in particular two oil supply lines and ensure that the medium flow directions in the first and second oil supply lines 21, 22 are opposite. The design can heat the PET raw materials at the two ends of the material pipe 1 more uniformly, ensure the temperature stability of the PET raw materials, and further maintain the physical properties of the PET raw materials.
Referring to fig. 1-3: the first oil feed pipe 21 and the second oil feed pipe 22 are spirally wound around the pipe 1.
The present invention significantly increases the contact area between the first and second oil supply pipes 21 and 22 and the pipe 1 by neatly winding them around the pipe 1 in a spiral manner. The novel design not only improves the heating rate, but also ensures the heating uniformity, thereby optimizing the whole heating process. After the temperature control device is started, the first heat pump 23 and the second heat pump 24 control the heated oil to be respectively conveyed from the first oil inlet pipe 211 and the second oil inlet pipe 221 to the first oil supply pipe 21 and the second oil supply pipe 22, the height Wen Youye flows along the spiral pipeline, and the heat in the height Wen Youye is transmitted to the PET raw material in the material pipe 1 through the material pipe 1. Meanwhile, the first oil supply pipe 21 and the second oil supply pipe 22 are in spiral shape, and the contact area between the first oil supply pipe 21 and the second oil supply pipe 22 and the material pipe 1 is obviously increased by a spiral winding mode. This increased contact area promotes heat transfer and thus increases the heating rate. The entire heating process is accelerated due to the increased efficiency of heat transfer. Due to the helical distribution of the first and second oil feed pipes 21, 22, their contact with the pipe 1 is more uniform. This means that the heat is distributed more evenly over the tube 1, avoiding local overheating or uneven heating. Such uniform heating helps to ensure uniform heating and uniform reaction of the materials, thereby optimizing the overall heating process. The spiral winding design not only improves the heating performance, but also facilitates the installation and maintenance of the first and second oil supply pipes 21 and 22. Due to its compact structure and simple installation, this design reduces installation costs and time, while facilitating subsequent maintenance and overhaul.
Referring to fig. 1 and 2: at least three temperature sensors 11 are arranged on the material pipe 1, and the temperature sensors 11 are distributed on the outer wall of the material pipe 1 at equal intervals along the axis of the material pipe 1; and the outer wall of the material pipe 1 is also provided with an oil supplementing device 3 for supplying oil to the first oil supply pipe 21 and the second oil supply pipe 22.
The invention skillfully combines the temperature sensor 11 and the oil supplementing device 3, monitors the temperature of each point of the material pipe 1 in real time, and accurately regulates and controls the heat supplementing according to the data. The advanced mechanism effectively prevents local temperature difference caused by uneven distribution of materials in the material pipe 1, and ensures uniform heating and stable treatment of the materials in the whole process. The temperature sensor 11 and the oil supplementing device 3 are electrically connected with the controller, and the temperature sensor 11 is preferably a thermistor sensor; after the temperature control device is started, the first heat pump 23 and the second heat pump 24 are started, and the height Wen Youye enters the first oil supply pipe 21 and the second oil supply pipe 22 from the first oil inlet pipe 211 and the second oil inlet pipe 221, respectively. Meanwhile, in the production process, the temperature of each position of the material pipe 1 is sensed through the plurality of temperature sensors 11, the PET raw materials are possibly unevenly distributed, the PET raw materials can absorb more heat at more positions of the PET raw materials, the temperature is relatively low, when the temperature sensor 11 senses that the temperature difference is large, a feedback signal is given to the controller, and after receiving the signal, the controller injects the high Wen Youye at the detection position through the oil supplementing device 3 to supplement heat, so that the temperature difference is controlled.
Referring to fig. 1 and 5: the oil supplementing device 3 comprises a slideway 31, a movable seat 32 and a linear driving assembly 33; the slideway 31 is arranged on the material pipe 1; the movable seat 32 is slidably mounted on the slideway 31; the movable seat 32 is provided with two third oil supply pipes 321 for supplying oil; the linear driving assembly 33 is mounted on the slideway 31 and is used for controlling the movable seat 32 to slide along the slideway 31; the movable seat 32 is provided with a docking mechanism 4; in the working state, when the temperature sensor 11 senses the temperature decrease, the linear driving assembly 33 controls the movable seat 32 to move to the temperature sensor 11, and the docking mechanism 4 controls the two third oil supply pipes 321 to be respectively communicated with the first oil supply pipe 21 and the second oil supply pipe 22.
The invention realizes the function of supplying oil to the first oil supply pipe 21 and the second oil supply pipe 22 through the slideway 31, the movable seat 32, the linear driving component 33 and the butting mechanism 4. The third oil supply pipe 321 communicates with the heating device 2 through a hose, the heating device 2 is not shown in the drawings, and the heating device 2 is preferably a vane type screw pump; the linear driving assembly 33 is electrically connected with the controller; in the production process, the temperature of each position of the material pipe 1 is sensed by a plurality of temperature sensors 11, at the position with more PET raw materials, the PET raw materials absorb more heat, so that the temperature is relatively lower, when the temperature sensor 11 senses that the temperature difference is larger, a feedback signal is sent to a controller, the controller starts a linear driving assembly 33 after the signal, the linear driving assembly 33 drives a movable seat 32 to move along a slideway 31, the movable seat 32 is moved to a position with lower temperature, two third oil supply pipes 321 are controlled by a docking mechanism 4 to be respectively communicated with a first oil supply pipe 21 and a second oil supply pipe 22, and a height Wen Youye is provided by the third oil supply pipes 321; and supplementing heat, thereby controlling the temperature difference.
Referring to fig. 1, 3-5: the docking mechanism 4 includes a connection pipe 41 and a one-way docking pipe 42; the connection pipe 41 is disposed below the third oil supply pipe 321, and the connection pipe 41 communicates with the third oil supply pipe 321; the unidirectional butt joint pipes 42 are provided with 2n and uniformly distributed on the first oil supply pipe 21 and the second oil supply pipe 22, wherein n is an integer greater than or equal to 2; the movable seat 32 is provided with a control device 5 for controlling the connection of the connecting pipe 41 and the unidirectional butt joint pipe 42; the third oil supply pipe 321 is in sliding fit with the movable seat 32; in the working state, the control device 5 can control the third oil supply pipe 321 on the movable seat 32 to move downwards, the third oil supply pipe 321 drives the connecting pipe 41 to move synchronously, and when the connecting pipe 41 is in abutting fit with the unidirectional butt joint pipe 42, the connecting pipe 41 is communicated with the unidirectional butt joint pipe 42.
The present invention successfully realizes the control of the communication of the third oil supply pipe 321 with the first oil supply pipe 21 and the second oil supply pipe 22 by the cooperation of precise components. The heat supplement is precisely controlled by the cooperation of the connecting tube 41, the unidirectional butt tube 42 and the control device 5. The novel design ensures the accurate supplement of heat at the designated position, improves the heating efficiency and optimizes the whole heating process. The unidirectional nipple 42 is equally distributed on the first and second oil supply pipes 21 and 22 in the axial direction of the pipe 1. And, one temperature sensor 11 is provided at each one-way junction tube 42 so as to precisely monitor the temperature around it. In the production process, the temperature of each position of the material pipe 1 is sensed by the plurality of temperature sensors 11, when the temperature sensor 11 senses that the temperature difference is increased, a feedback signal is sent to the controller, the controller starts the linear driving assembly 33 after receiving the signal, the linear driving assembly 33 drives the movable seat 32 to move along the slideway 31, the movable seat 32 moves to a lower temperature, then the control device 5 controls the third oil supply pipe 321 to move downwards, the third oil supply pipe 321 drives the connecting pipe 41 to synchronously move until the connecting pipe 41 is in tight fit with the unidirectional butt joint pipe 42, the connecting pipe 41 is communicated with the unidirectional butt joint pipe 42, and at the moment, the two third oil supply pipes 321 are respectively communicated with the first oil supply pipe 21 and the second oil supply pipe 22 and provide high Wen Youye through the third oil supply pipe 321; and the heat is supplemented, so that the local temperature is prevented from being too low.
Referring to fig. 1, 5-8: the control device 5 comprises a docking assembly 51 and a limiting assembly 52; the docking assembly 51 includes a mounting base 511, a docking block 512, a first elastic member 513, and a frame 514; the mounting base 511 is mounted on the movable base 32; the butt block 512 is slidably mounted on the mounting base 511; the slideway 31 is provided with a butt joint hole 311 matched with the butt joint block 512; two ends of the first elastic member 513 are respectively connected with the mounting seat 511 and the butt joint block 512; the frame 514 is connected with the butt joint block 512 and the third oil supply pipe 321; the limiting assembly 52 is disposed on the movable mount 32 and is used to limit movement of the abutment 512.
The invention realizes the function of controlling the movement of the third oil supply pipe 321 through the mounting seat 511, the butt joint block 512, the first elastic piece 513, the frame 514 and the limiting component 52. In the production process, the temperature of each position of the material pipe 1 is sensed by the plurality of temperature sensors 11, when the temperature sensor 11 senses that the temperature difference is increased, a feedback signal is sent to the controller, the controller positions the position of the temperature sensor 11 after the signal is sent to the linear driving component 33 by the controller, the linear driving component 33 drives the movable seat 32 to move along the slideway 31, the movable seat 32 is moved to a designated position, in the moving process, when the movable seat 32 is close to the designated position, the movement restriction of the restriction component 52 on the abutting block 512 is released, at this time, the abutting block 512 moves downwards by a distance under the elastic force of the first elastic piece 513, the abutting block 512 stops moving after being contacted with the slideway 31, then when the abutting block 512 is aligned with the abutting hole 311, the abutting block 512 continues to move downwards under the elastic force of the first elastic piece 513 and is in plug-in fit with the abutting hole 311, the movable seat 32 stops moving, and the abutting block 512 drives the third oil supply pipe 321 to move downwards through the frame 514, and the third oil supply pipe 321 drives the third oil supply pipe 41 to synchronously move until the 41 is in contact with the unidirectional abutting pipe 42, and the first oil supply pipe 321 is in contact with the unidirectional abutting pipe 42, and the second oil supply pipe 321 is communicated with the first connecting pipe and the third connecting pipe 3821 through the unidirectional pipe 321 and the first connecting pipe and the second connecting pipe 3821 respectively; and the heat is supplemented, so that the local temperature is prevented from being too low. By the close fit of the docking block 512 and the docking hole 311, the position of the movable seat 32 can be corrected, and the stability and accuracy of the movement of the movable seat 32 can be ensured. Meanwhile, an infrared positioning device can be arranged on the movable seat 32 and the sliding seat to further improve the moving accuracy of the movable seat 32.
Referring to fig. 5, 8 and 9: the restraint assembly 52 includes an extension rod 521, a link 522, and a linear actuator 523; the extension rod 521 is mounted on the docking block 512; the connecting frame 522 is movably arranged on the movable seat 32, and a push plate 5221 is arranged on the connecting frame 522; the driving end of the linear driver 523 is connected with the connecting frame 522; in the working state, after the butt joint block 512 is in plug-in fit with the butt joint hole 311, when the linear driver 523 pushes the connecting frame 522 to move upwards, the connecting frame 522 drives the push plate 5221 to move, the push plate 5221 pushes the extension rod 521 to move after contacting with the extension rod 521, the first elastic member 513 compresses, and the butt joint block 512 is separated from the butt joint hole 311.
The present invention skillfully combines the extension bar 521, the connection frame 522, the push plate 5221, and the linear actuator 523 to achieve a function of effectively restricting the movement of the docking block 512. After the oil replenishment is completed, the docking block 512 can be quickly reset by precise control of the linear drive 523. The novel design not only simplifies the operation, but also provides convenience for carrying out heat compensation on other positions. The linear actuator 523 is preferably a linear cylinder, and the linear actuator 523 is electrically connected to the controller; when heat compensation is required, the controller sends a signal to the linear driving assembly 33, the linear driving assembly 33 drives the movable seat 32 to move along the slideway 31, the movable seat 32 is moved to a designated position, in the moving process, when the movable seat 32 is close to the designated position, the controller sends a signal to the linear driver 523, the linear driver 523 drives the connecting frame 522 to move downwards after the signal is sent, the connecting frame 522 drives the push plate 5221 to synchronously move, further the push plate 5221 is far away from the extension rod 521, the movement restriction of the limiting assembly 52 on the butt joint block 512 is released, at the moment, the butt joint block 512 moves downwards for a distance under the elastic force of the first elastic piece 513, after the butt joint block 512 is contacted with the slideway 31, the movement is stopped, then when the butt joint block 512 is aligned with the butt joint hole 311, the butt joint block 512 continues to move downwards under the elastic force of the first elastic piece 513, the butt joint block 32 stops moving in a splicing way, and the butt joint block 512 drives the third oil pipe 321 to move downwards through the frame 514, and the third oil pipe 41 is synchronously moved until the butt joint block 41 is matched with the unidirectional butt joint pipe 42, and the butt joint block 41 is tightly communicated with the first oil pipe 321 and the second oil pipe 321 and the third oil pipe 41 and the first oil pipe 321 and the third oil pipe Wen Youye are tightly communicated with the first oil pipe 5222 and the second oil pipe 321; and the heat is supplemented, so that the local temperature is prevented from being too low. After the temperature sensor 11 senses that the temperature is restored to the specified value, the controller sends a signal to the linear driver 523 again, and the linear driver 523 drives the connecting frame 522 and the push plate 5221 to move upwards, so as to push the extension rod 521, and the extension rod 521 overcomes the elastic force of the first elastic member 513 to drive the docking block 512 to move upwards, so that the docking block 512 is separated from the docking hole 311.
Referring to fig. 10: a limiting ring 421, a bracket 422, a flashboard 423 and a second elastic piece 424 are arranged in the unidirectional butt joint pipe 42; the limiting ring 421 and the bracket 422 are both connected with the inner wall of the unidirectional butt joint pipe 42; the support 422 is positioned below the limiting ring 421; the outer ring of the flashboard 423 is in sliding fit with the inner wall of the unidirectional butt joint pipe 42, and the flashboard 423 is positioned between the bracket 422 and the limiting ring 421; both ends of the second elastic member 424 are connected to the bracket 422 and the shutter 423, respectively; when the shutter 423 is not acted by external force, the second elastic member 424 is in a compressed state, and the shutter 423 is tightly matched with the limiting ring 421 under the elastic force of the second elastic member 424.
The invention realizes the function of avoiding the oil from overflowing from the unidirectional connecting pipe 41 by self through the limiting ring 421, the support 422, the flashboard 423 and the second elastic piece 424, and simultaneously achieves the effect of facilitating the connecting pipe 41 to be communicated with the unidirectional connecting pipe 41. When the control device 5 controls the third oil supply pipe 321 to move downwards, the third oil supply pipe 321 drives the connecting pipe 41 to move, the connecting pipe 41 extrudes the flashboard 423, the second elastic piece 424 is compressed under force, the flashboard 423 is separated from the limiting ring 421, the height Wen Youye enters the connecting pipe 41 from the lower end of the third oil supply pipe 321, and then enters the unidirectional butt joint pipe 42 from the connecting pipe 41 to perform heat compensation.
Referring to fig. 5 and 6: the linear drive assembly 33 includes a rotary drive 331 and a screw 332; the rotary driver 331 is arranged on the slideway 31, and the driving end of the rotary driver 331 is in transmission connection with the screw 332; the screw 332 is rotatably mounted on the slide way 31, and the movable seat 32 is in threaded connection with the screw 332.
The present invention realizes the function of driving the movable base 32 to move by rotating the driver 331 and the screw 332. The rotary driver 331 is preferably a servo motor, and the servo motor is electrically connected with the controller; in the production process, the temperature of each position of the material pipe 1 is sensed by the temperature sensors 11, when the temperature difference is sensed to be large by the temperature sensors 11, a feedback signal is sent to the controller, the controller starts the rotary driver 331 after receiving the signal, the rotary driver 331 drives the screw 332 to rotate after receiving the signal, the screw 332 drives the movable seat 32 in threaded connection with the screw 332 to move along the slideway 31, the movable seat 32 is moved to a designated position, and then the oil supplementing operation is carried out through the cooperation of the control device 5 and the docking mechanism 4.
Referring to fig. 11: a support tube 12 is arranged in the material tube 1, the support tube 12 is arranged in a hollow mode, and a heating tube 121 is arranged in the support tube 12.
The invention realizes the function of heating the PET raw material from the inside of the material pipe 1 through the supporting pipe 12 and the heating pipe 121. Spiral auger blades 13 are mounted on the support tube 12. The materials can be heated from the outside of the material pipe 1 through the first oil supply pipe 21, the second oil supply pipe 22 and the third oil supply pipe 321, but the materials at the center position of the material pipe 1 are not heated enough, and the situation of lower temperature possibly occurs, so that the support pipe 12 and the heating pipe 121 are arranged, the spiral auger blade 13 is supported through the support pipe 12, and meanwhile, the materials are heated through the heating pipe 121 in the process of conveying the materials, so that the heating uniformity and the heating rate are further improved.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (10)
1. A double-screw temperature control device for a PET extruder, which is arranged on a material pipe (1) of the extruder for conveying PET raw materials, characterized in that the temperature control device comprises a heating device (2);
the heating device (2) comprises a first oil supply pipe (21), a second oil supply pipe (22), a first heating pump (23) and a second heating pump (24);
the first oil supply pipe (21) is in tight fit with the outer wall of the material pipe (1), a first oil inlet pipe (211) and a first oil outlet pipe (212) are respectively arranged at two ends of the first oil supply pipe (21), the first oil inlet pipe (211) and the first oil outlet pipe (212) are respectively arranged at two ends of the material pipe (1), and the first oil inlet pipe (211) and the first oil outlet pipe (212) are communicated with the first heating pump (23) through pipelines;
the second oil supply pipe (22) is in tight fit with the outer wall of the material pipe (1), a second oil inlet pipe (221) and a second oil outlet pipe (222) are respectively arranged at two ends of the second oil supply pipe (22), the second oil inlet pipe (221) and the second oil outlet pipe (222) are respectively arranged at two ends of the material pipe (1), and the second oil inlet pipe (221) and the second oil outlet pipe (222) are communicated with the second heating pump (24) through pipelines;
the first oil inlet pipe (211) and the second oil outlet pipe (222) are arranged at the same end of the material pipe (1).
2. A double helix temperature control device for a PET extruder according to claim 1, characterized in that the first oil supply pipe (21) and the second oil supply pipe (22) are helically wound on the pipe (1).
3. The double-screw temperature control device for the PET extruder according to claim 1, wherein at least three temperature sensors (11) are arranged on the material pipe (1), and the plurality of temperature sensors (11) are distributed on the outer wall of the material pipe (1) at equal intervals along the axis of the material pipe (1);
and the outer wall of the material pipe (1) is also provided with an oil supplementing device (3) for supplying oil to the first oil supply pipe (21) and the second oil supply pipe (22).
4. A double helix temperature control device for a PET extruder according to claim 3, characterized in that the oil replenishment device (3) comprises a slideway (31), a movable seat (32) and a linear drive assembly (33);
the slideway (31) is arranged on the material pipe (1);
the movable seat (32) is slidably arranged on the slideway (31);
two third oil supply pipes (321) for supplying oil are arranged on the movable seat (32);
the linear driving assembly (33) is arranged on the slideway (31) and is used for controlling the movable seat (32) to slide along the slideway (31);
a butt joint mechanism (4) is arranged on the movable seat (32);
under the operating condition, when the temperature sensor (11) senses that the temperature is reduced, the linear driving assembly (33) controls the movable seat (32) to move to the temperature sensor (11), and the docking mechanism (4) controls the two third oil supply pipes (321) to be respectively communicated with the first oil supply pipe (21) and the second oil supply pipe (22).
5. A double helix temperature control device for a PET extruder according to claim 4, characterized in that the docking mechanism (4) comprises a connecting tube (41) and a unidirectional docking tube (42);
the connecting pipe (41) is arranged below the third oil supply pipe (321), and the connecting pipe (41) is communicated with the third oil supply pipe (321);
the unidirectional butt joint pipes (42) are provided with 2n and are uniformly distributed on the first oil supply pipe (21) and the second oil supply pipe (22), wherein n is an integer greater than or equal to 2;
a control device (5) for controlling the connection of the connecting pipe (41) and the unidirectional butt joint pipe (42) is arranged on the movable seat (32);
the third oil supply pipe (321) is in sliding fit with the movable seat (32);
under the working condition, the control device (5) can control the third oil supply pipe (321) on the movable seat (32) to move downwards, the third oil supply pipe (321) drives the connecting pipe (41) to move synchronously, and when the connecting pipe (41) is in abutting fit with the unidirectional butt joint pipe (42), the connecting pipe (41) is communicated with the unidirectional butt joint pipe (42).
6. A double helix temperature control device for a PET extruder according to claim 5, characterized in that the control device (5) comprises a docking assembly (51) and a limiting assembly (52);
the docking assembly (51) comprises a mounting seat (511), a docking block (512), a first elastic piece (513) and a frame body (514);
the mounting seat (511) is mounted on the movable seat (32);
the butt joint block (512) is slidably arranged on the mounting seat (511);
a butt joint hole (311) matched with the butt joint block (512) is formed in the slide way (31);
two ends of the first elastic piece (513) are respectively connected with the mounting seat (511) and the butt joint block (512);
the frame body (514) is connected with the butt joint block (512) and the third oil supply pipe (321);
a limiting assembly (52) is disposed on the movable mount (32) and is configured to limit movement of the abutment (512).
7. The double helix temperature control device for a PET extruder of claim 6, wherein the limiting assembly (52) comprises an extension rod (521), a connecting frame (522), and a linear drive (523);
the extension rod (521) is arranged on the butt joint block (512);
the connecting frame (522) is movably arranged on the movable seat (32), and the connecting frame (522) is provided with a push plate (5221);
the driving end of the linear driver (523) is connected with the connecting frame (522);
under the working condition, after the butt joint block (512) is in plug-in fit with the butt joint hole (311), when the linear driver (523) pushes the connecting frame (522) to move upwards, the connecting frame (522) drives the push plate (5221) to move, the push plate (5221) pushes the extension rod (521) to move after being contacted with the extension rod (521), the first elastic piece (513) is compressed, and the butt joint block (512) is separated from the butt joint hole (311).
8. The double-screw temperature control device for a PET extruder according to claim 5, wherein a limit ring (421), a bracket (422), a shutter (423) and a second elastic member (424) are arranged in the unidirectional butt joint pipe (42);
the limiting ring (421) and the bracket (422) are connected with the inner wall of the unidirectional butt joint pipe (42);
the bracket (422) is positioned below the limiting ring (421);
the outer ring of the flashboard (423) is in sliding fit with the inner wall of the unidirectional butt joint pipe (42), and the flashboard (423) is positioned between the bracket (422) and the limiting ring (421);
both ends of the second elastic piece (424) are respectively connected with the bracket (422) and the flashboard (423);
when the flashboard (423) is not acted by external force, the second elastic piece (424) is in a compressed state, and the flashboard (423) is tightly matched with the limiting ring (421) under the elastic action of the second elastic piece (424).
9. The double helix temperature control device for a PET extruder of claim 4, wherein the linear drive assembly (33) comprises a rotary drive (331) and a screw (332);
the rotary driver (331) is arranged on the slideway (31), and the driving end of the rotary driver (331) is in transmission connection with the screw (332);
the screw rod (332) is rotatably arranged on the slide way (31), and the movable seat (32) is in threaded connection with the screw rod (332).
10. The double-spiral temperature control device for the PET extruder according to claim 1, wherein a supporting tube (12) is arranged in the material tube (1), the supporting tube (12) is arranged in a hollow mode, and a heating tube (121) is arranged in the supporting tube (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410090304.5A CN117601399B (en) | 2024-01-23 | 2024-01-23 | Double-screw temperature control device for PET extruder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410090304.5A CN117601399B (en) | 2024-01-23 | 2024-01-23 | Double-screw temperature control device for PET extruder |
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| CN117601399A true CN117601399A (en) | 2024-02-27 |
| CN117601399B CN117601399B (en) | 2024-03-22 |
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| CN101920552A (en) * | 2009-06-17 | 2010-12-22 | 北京化工大学 | Screw extruder barrel and temperature control method thereof |
| CN103935011A (en) * | 2014-05-06 | 2014-07-23 | 湖州市千金宝云机械铸件有限公司 | Internal-heating type plastic extruder |
| CN104309089A (en) * | 2014-09-30 | 2015-01-28 | 天津市科成防水材料有限公司 | Extruding device of hollow plastic plate |
| CN204727985U (en) * | 2015-04-24 | 2015-10-28 | 上海赢奔光电科技有限公司 | A kind of crystal furnace is with furnace annealing device |
| CN215550797U (en) * | 2021-06-24 | 2022-01-18 | 佛山市新三合塑料薄膜制造有限公司 | Novel screw extruder |
| CN219511029U (en) * | 2023-02-22 | 2023-08-11 | 中材锂膜(南京)有限公司 | Double-spiral wet-process diaphragm white oil tank heating device |
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2024
- 2024-01-23 CN CN202410090304.5A patent/CN117601399B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920552A (en) * | 2009-06-17 | 2010-12-22 | 北京化工大学 | Screw extruder barrel and temperature control method thereof |
| CN103935011A (en) * | 2014-05-06 | 2014-07-23 | 湖州市千金宝云机械铸件有限公司 | Internal-heating type plastic extruder |
| CN104309089A (en) * | 2014-09-30 | 2015-01-28 | 天津市科成防水材料有限公司 | Extruding device of hollow plastic plate |
| CN204727985U (en) * | 2015-04-24 | 2015-10-28 | 上海赢奔光电科技有限公司 | A kind of crystal furnace is with furnace annealing device |
| CN215550797U (en) * | 2021-06-24 | 2022-01-18 | 佛山市新三合塑料薄膜制造有限公司 | Novel screw extruder |
| CN219511029U (en) * | 2023-02-22 | 2023-08-11 | 中材锂膜(南京)有限公司 | Double-spiral wet-process diaphragm white oil tank heating device |
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| CN117601399B (en) | 2024-03-22 |
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