CN202344820U - Intelligent tracking temperature control device for screw rod plastic extrusion machine - Google Patents

Intelligent tracking temperature control device for screw rod plastic extrusion machine Download PDF

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Publication number
CN202344820U
CN202344820U CN2011205083341U CN201120508334U CN202344820U CN 202344820 U CN202344820 U CN 202344820U CN 2011205083341 U CN2011205083341 U CN 2011205083341U CN 201120508334 U CN201120508334 U CN 201120508334U CN 202344820 U CN202344820 U CN 202344820U
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CN
China
Prior art keywords
heating plate
screw rod
controller
temperature control
heating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN2011205083341U
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Chinese (zh)
Inventor
刘际国
张利
崔爱民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WEIFANG MODERN PLASTIC CO Ltd
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WEIFANG MODERN PLASTIC CO Ltd
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Publication date
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Priority to CN2011205083341U priority Critical patent/CN202344820U/en
Application granted granted Critical
Publication of CN202344820U publication Critical patent/CN202344820U/en
Anticipated expiration legal-status Critical
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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
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/924—Barrel or housing
    • 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
    • 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
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The utility model discloses an intelligent tracking temperature control device for a screw rod plastic extrusion machine. The intelligent tracking temperature control device comprises a heating plate installed on a screw cylinder and also comprises a controller for controlling the power-on/off of the heating plate; and a temperature sensor electrically connected with the input end of the controller is inserted into the screw cylinder. The intelligent tracking temperature control device is structurally characterized in that a silicon-controlled rectifier is connected in a power supply circuit of the heating plate in series; and the output end of the controller is electrically connected with a trigger for controlling the silicon-controlled rectifier to work. The silicon-controlled rectifier comprises a positive thyristor and a reverse thyristor which are in reverse-parallel connection. An air blower is installed on the heating plate; and a normally open contact of a contactor controlled by the controller is connected in a power supply circuit of the air blower in series. An ampere meter is also connected in the power supply circuit of the heating plate in series. With the adoption of the structure, the intelligent tracking temperature control device for the screw rod plastic extrusion machine has the advantages of reasonable structure, high temperature control precision and less power consumption, is favorable for improving the product quality and is particularly suitable for being used on the screw rod plastic extrusion machine.

Description

Screw rod plastic extruder intelligent-tracking temperature regulating device
Technical field
The utility model relates to a kind of screw rod plastic extruder intelligent-tracking temperature regulating device.
Background technology
Plastic extruder belongs to the part of plastic extruding forming equipment, and in plastic extruding forming equipment, plastic extruder is referred to as main frame usually.With the supporting follow-up equipment of plastic extruder, just the plastic extruding forming machine then is called subsidiary engine.The main effect of plastic extruder is that the plastic raw materials hot melt is become flow-like, and flows to the plastic extruding forming machine.The main effect of plastic extruding forming machine is that the flow-like plastics are exported by the regulation cooling and shaping.And in plastic extruder, the mechanism of most critical is exactly a temperature regulating device.At present, the temperature regulating device that uses in traditional screw rod plastic extruder generally comprises the heating plate that is installed on the barrel, comprises that also the control heating plate gets the controller of dead electricity, is fitted with the temperature sensor that is electrically connected with the controller input in the barrel.Temperature regulating device in the conventional helical bar plastic extruder in use, through the heating-up temperature of temperature sensor senses barrel inner chamber.When temperature was higher than setting value in the barrel, controller sent power-off signal, and the heating plate dead electricity stops heating.When temperature was lower than setting value in the barrel, controller sent power on signal, and heating plate must be established the beginning heating by cable.Therefore, temperature regulating device is simple in structure, and manufacturing cost is lower, and when work, need not manual intervention, has temperature automatically controlled function.But the weak point of traditional temperature regulating device is, heating plate gets and will carry out heating with full power when electric, and firing rate is too fast; When temperature sensor senses cavity temperature in the barrel reaches design temperature; And when controller control heating plate stopped to heat, heating plate also can continue the barrel inner chamber is heated, therefore; Cavity temperature can be higher than set temperature value far away in the barrel; Heating accuracy is lower, can influence the heating quality of raw material in the barrel inner chamber like this, and burnt phenomenon appears in serious meeting; Because there is the superfluous problem of heat in heating plate, therefore must cause power consumption too high.
Summary of the invention
The technical problem that the utility model will solve is to provide a kind of rational in infrastructure to above-mentioned deficiency, and temperature-controlled precision is high, and power consumption is few, and helps the screw rod plastic extruder intelligent-tracking temperature regulating device that improves the quality of products.
For solving the problems of the technologies described above; This screw rod plastic extruder intelligent-tracking temperature regulating device comprises the heating plate that is installed on the barrel; Comprise that also the control heating plate gets the controller of dead electricity; Be fitted with the temperature sensor that is electrically connected with the controller input in the barrel, its design feature is: be serially connected with silicon controlled module in the current supply circuit of heating plate, the output of controller is electrically connected with the trigger of control silicon controlled module work.
The screw rod plastic extruder intelligent-tracking temperature regulating device of this structure is to realize that through the pressure regulation heating arrangement temperature-controlled precision is high, and power consumption is few, and help to improve the quality of products.
The pressure regulation heating arrangement mainly comprises the silicon controlled module that is serially connected in the heating plate current supply circuit, the corresponding electrical connection of output of the gate pole of silicon controlled module and negative electrode and trigger, the input of trigger again with the corresponding electrical connection of output of controller.Controller is the core component of this screw rod plastic extruder intelligent-tracking temperature regulating device; It mainly acts on is to receive the actual temperature signal that the temperature sensor transmission comes; The difference of actual temperature signal and design temperature signal is PID regulates computing; Thereby, work to pass through the trigger actuated silicon controlled module to the temperature control analog signal that trigger sends 0-10mA.The main effect of trigger; It is the pulse voltage that the output signal of controller is converted into control silicon controlled module gate pole and negative electrode; Like this; Just can control the conducting angle of silicon controlled module work, thereby pass through the purpose that silicon controlled module is realized the adjustment output voltage, also just realize the purpose of pressure regulation heating.Therefore, in this screw rod plastic extruder intelligent-tracking temperature regulating device, the heating power of heating plate changes.When specifically using, can be in the heating starting stage, control heating plate total head, heating with full power in the heating stage casing, are half pressure, half-power heating, at the heating latter end, are low pressure, low-power heating.Clearly; Through the heating arrangement of this pressure regulation, adjusting power, the actual heating-up temperature that can make the barrel inner chamber has just reduced the heating voltage and the power of heating plate during near design temperature; The temperature of barrel inner chamber is slowly raise, slowly near design temperature; So not only help to realize accurate temperature controlling, prevent to heat excessive and cause waste of energy, and in the process of low pressure, low-power heating; The interior heat of the autogenous grinding of the screw rod of high speed rotating and storeroom also can spread in the barrel inner chamber gradually in the barrel; The time of having reserved stack so for heat in the autogenous grinding of heating-up temperature and screw rod of heating plate helps to utilize that heat improves cavity temperature in the barrel in the screw rod autogenous grinding, thereby further played the effect that saving adds thermoelectric power.
As a kind of implementation, said silicon controlled module comprises the forward controllable silicon and reverse controllable silicon of reverse parallel connection.
Through forward controllable silicon and reverse controllable silicon; Can be used for controlling respectively the forward circulation and the reverse circulated of heating current; So just enlarged the angle of flow scope of single controllable silicon when the control current flowing; Also just enlarge voltage adjusting range, helped to use the arbitrary heating power between heating with full power and zero energy heating to heat.
As improvement, on the said heating plate air blast is installed, be serially connected with normally open contact in the current supply circuit of air blast by the contactor of controller control.
Air blast is set on heating plate; When actual heating-up temperature surpasses design temperature; Controller can be serially connected in the contactor normally opened contact in the air blast current supply circuit through control; Connect the current supply circuit of air blast, thereby, help to ensure heating accuracy and product quality the barrel refrigeration of drying.
As improvement, also be serially connected with ammeter in the current supply circuit of heating plate.
Through ammeter, people can observe the real work electric current of heating plate intuitively, for people's production operation provides operating basis, hommization more.
In sum, adopt the screw rod plastic extruder intelligent-tracking temperature regulating device of this structure, rational in infrastructure, temperature-controlled precision is high, and power consumption is few, and helps to improve the quality of products, and is particularly suitable on the screw rod plastic extruder, using.
Description of drawings
In conjunction with accompanying drawing the utility model is explained further details:
Fig. 1 is the structural representation of the utility model.
Among the figure: 1 is barrel, and 2 is heating plate, and 3 is temperature sensor, and 4 is air blast, and 5 is reductor; 6 is silicon controlled module, and 7 is ammeter, and KZQ is a controller, and CFQ is a trigger, and KZ1 is the forward controllable silicon; KZ2 is reverse controllable silicon, and KM is a contactor, and KM-1 is a normally open contact, and K is a breaker.
The specific embodiment
As shown in Figure 1, this screw rod plastic extruder intelligent-tracking temperature regulating device comprises the heating plate 2 that is installed on the barrel 1, and heating plate 2 is circular, is locked at together by two semi-rings to constitute.Be serially connected with ammeter 7 in the current supply circuit of heating plate 2.Through ammeter 7, people can observe the real work electric current of heating plate 2 intuitively, for people's production operation provides operating basis, hommization more.Also be connected with silicon controlled module 6 and breaker K in the current supply circuit of heating plate 2.The corresponding electrical connection of output of the control end of silicon controlled module 6 and trigger CFQ, the input of trigger CFQ again with the corresponding electrical connection of output of controller KZQ.Power end 2,3 terminals of controller KZQ and the C of trigger CFQ, N terminal are electrically connected with C, the N phase line of AC power respectively, and like this, the conducting that can control controller KZQ, trigger CFQ and heating plate 2 power inputs through breaker K whether.Said silicon controlled module 6 comprises the forward controllable silicon KZ1 and reverse controllable silicon KZ2 of reverse parallel connection.Through forward controllable silicon KZ1 and reverse controllable silicon KZ2; Can be used for controlling respectively the forward circulation and the reverse circulated of heating plate 2 heating currents; So just enlarged the angle of flow scope of single controllable silicon when the control current flowing; Also just enlarged voltage adjusting range, helped to use the arbitrary heating power between heating with full power and zero energy heating to heat, controlled range is wider.Be fitted with temperature sensor 3 in the barrel 1, the corresponding electrical connection of input of the output of temperature sensor 3 and controller KZQ.In the present embodiment, temperature sensor 3 adopts K type thermocouple, to adapt to the heated perimeter requirement of plastic extruder.The main effect of temperature sensor 3 is the actual temperatures that detect barrel 1 inner chamber in real time, and this temperature value is passed to controller KZQ.
Controller KZQ is the core component of this screw rod plastic extruder intelligent-tracking temperature regulating device; It mainly acts on is to receive temperature sensor 3 to transmit the actual temperature signal of coming; The difference of actual temperature signal and design temperature signal is PID regulates computing; And, work to drive silicon controlled module 6 through trigger CFQ to the temperature control analog signal that trigger CFQ sends 0-10mA.The main effect of trigger CFQ; It is the pulse voltage that the output signal of controller KZQ is converted into control silicon controlled module 6 gate poles and negative electrode; Like this; Just can control the conducting angle of silicon controlled module 6 work, thereby pass through the purpose that silicon controlled module 6 is realized the adjustment output voltages, also just realize the purpose of pressure regulation heating.Therefore, in this screw rod plastic extruder intelligent-tracking temperature regulating device, the heating power of heating plate 2 changes.In the present embodiment, in the heating starting stage, controller KZQ control heating plate 2 total heads, heating with full power; When barrel 1 inner chamber actual temperature reached design temperature 50%, controller KZQ control heating plate 2 heated with 50% voltage; When barrel 1 inner chamber actual temperature reached design temperature 80%, controller KZQ control heating plate 2 heated with 20% voltage.Clearly; Through the heating arrangement of this pressure regulation, adjusting power, the actual heating-up temperature that can make barrel 1 inner chamber has just reduced the heating voltage and the power of heating plate 2 during near design temperature; The temperature of barrel 1 inner chamber is slowly raise, slowly near design temperature; So not only help to realize accurate temperature controlling, prevent to heat excessive and cause waste of energy, and in the process of low pressure, low-power heating; The interior heat of the autogenous grinding of the screw rod of high speed rotating and storeroom also can spread in barrel 1 inner chamber gradually in the barrel 1; The time of having reserved stack so for heat in the autogenous grinding of heating-up temperature and screw rod of heating plate 2 helps to utilize that heat improves cavity temperature in the barrel 1 in the screw rod autogenous grinding, thereby further played the effect that saving adds thermoelectric power.
Air blast 4 is installed on the heating plate 2, is serially connected with normally open contact KM-1 in the current supply circuit of air blast 4 by the contactor KM of controller KZQ control.When actual heating-up temperature surpasses design temperature; Controller KZQ can be serially connected in the normally opened contact KM-1 of the contactor KM in air blast 4 current supply circuits through control; Connect the current supply circuit of air blast 4, thereby, help to ensure heating accuracy and product quality barrel 1 refrigeration of drying.
In the present embodiment; Controller KZQ adopts Zhejiang to join the XMET intelligence instrument that safe instrument Co., Ltd produces; Trigger CFQ adopt Jinan to increase income KY-21 single-chip microcomputer trigger board that Electronics Co., Ltd. produces, its structure and operation principle belong to known technology, no longer carefully state at this.

Claims (5)

1. screw rod plastic extruder intelligent-tracking temperature regulating device; Comprise the heating plate (2) that is installed on the barrel (1); Comprise that also control heating plate (2) gets the controller (KZQ) of dead electricity; Be fitted with the temperature sensor (3) that is electrically connected with controller (KZQ) input in the barrel (1), it is characterized in that: be serially connected with silicon controlled module (6) in the current supply circuit of heating plate (2), the output of controller (KZQ) is electrically connected with the trigger (CFQ) of control silicon controlled module (6) work.
2. screw rod plastic extruder intelligent-tracking temperature regulating device as claimed in claim 1 is characterized in that: said silicon controlled module (6) comprises the forward controllable silicon (KZ1) and the reverse controllable silicon (KZ2) of reverse parallel connection.
3. according to claim 1 or claim 2 screw rod plastic extruder intelligent-tracking temperature regulating device; It is characterized in that: air blast (4) is installed on the said heating plate (2), is serially connected with normally open contact (KM-1) in the current supply circuit of air blast (4) by the contactor (KM) of controller (KZQ) control.
4. according to claim 1 or claim 2 screw rod plastic extruder intelligent-tracking temperature regulating device is characterized in that: also be serially connected with ammeter (7) in the current supply circuit of heating plate (2).
5. screw rod plastic extruder intelligent-tracking temperature regulating device as claimed in claim 3 is characterized in that: also be serially connected with ammeter (7) in the current supply circuit of heating plate (2).
CN2011205083341U 2011-12-08 2011-12-08 Intelligent tracking temperature control device for screw rod plastic extrusion machine Expired - Lifetime CN202344820U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205083341U CN202344820U (en) 2011-12-08 2011-12-08 Intelligent tracking temperature control device for screw rod plastic extrusion machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205083341U CN202344820U (en) 2011-12-08 2011-12-08 Intelligent tracking temperature control device for screw rod plastic extrusion machine

Publications (1)

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CN202344820U true CN202344820U (en) 2012-07-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103568277A (en) * 2013-11-01 2014-02-12 苏州泰科尼光伏材料有限公司 EVA (ethylene-vinyl acetate copolymer) adhesive heating extruder
CN104260224A (en) * 2014-08-10 2015-01-07 宁国市宁盛橡塑制品有限公司 Intelligent hot air molten plastic recycling granulation equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103568277A (en) * 2013-11-01 2014-02-12 苏州泰科尼光伏材料有限公司 EVA (ethylene-vinyl acetate copolymer) adhesive heating extruder
CN104260224A (en) * 2014-08-10 2015-01-07 宁国市宁盛橡塑制品有限公司 Intelligent hot air molten plastic recycling granulation equipment

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Granted publication date: 20120725