CN217476564U - Heating ultra-high temperature protection system of plastic extruding machine - Google Patents
Heating ultra-high temperature protection system of plastic extruding machine Download PDFInfo
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- CN217476564U CN217476564U CN202221461869.2U CN202221461869U CN217476564U CN 217476564 U CN217476564 U CN 217476564U CN 202221461869 U CN202221461869 U CN 202221461869U CN 217476564 U CN217476564 U CN 217476564U
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Abstract
The utility model belongs to the technical field of cable processing, especially, extruding machine heating ultra-temperature protection system, including production line main power supply and PLC controller, its characterized in that: the production line is characterized in that a heating power supply main switch is connected in series with the outer portion of the production line main power supply, a heating main contactor is connected in series with the outer portion of the heating power supply main switch, and a plurality of heating sub-switches are connected in series with the outer portion of the heating main contactor. After the plastic extruding machine heats the ultra-high temperature protection system, after the heating is started, sampling temperatures of all levels and target values of the sampling temperatures are calculated through the PLC, the PLC respectively sends corresponding on-off instructions to heating solid-state relays, and when the sampling values are equal to the target values, the conduction signals of the solid-state relays are cut off; the PLC controller sends out a corresponding fan starting instruction when the temperature exceeds the target value, and the fan stops after the temperature falls back to the target value; when the temperature is lower than the target value, the PLC controller sends a conducting signal to the corresponding solid-state relay, the heater heats, the circulation is repeated, and the effect of accurately controlling the temperature is achieved.
Description
Technical Field
The utility model relates to a cable processing technology field specifically is extruding machine heating ultra-temperature protection system.
Background
The cable is coiled (coiled) into a wire and cable product or an insulated conductor semi-finished product through a series of production processes of paying off, plastic extruding, cooling, printing, drawing and winding, in the whole production flow, extrusion molding is the most important production process, solid plastic is added into a hopper of an extruder, the heat generated by the heater is transferred to the plastic in the charging barrel through heat conduction, the temperature rises, the machine runs, the screw rod in the charging barrel rotates to convey the plastic forwards, the plastic rubs and shears with the charging barrel and the screw rod as well as the plastic particles and the plastic particles in the moving process to generate a large amount of heat, the heat and the heat conduction jointly act to continuously melt the plastic particles in the processing department, in the extrusion molding process, related electrical elements (such as a temperature control instrument or a PLC) are adopted to control the on-off of an electric heater to heat a charging barrel, a neck and a machine head of the extruding machine, so that plastics are melted. The precision of the extrusion heating temperature control plays a crucial role in the product quality.
Traditionally, in the extrusion heating link, a temperature control main loop is powered from a main power supply of a production line, and is connected with an electric heater through various stage switches and a solid-state relay, a temperature sampling signal and a set value are compared and operated through a temperature control instrument in a control loop, then an on-off signal is output to the solid-state relay, the on-off of the power supply of the heater is controlled, meanwhile, the timing heating can be set through a PLC program, when the solid-state relay is damaged and is not controlled by the PLC control signal, the heater is continuously heated, a cooling fan cannot completely cool the heater, the heating position and plastic are continuously heated, the equipment is finally damaged or the plastic is carbonized, the heating out of control caused by the on-off of the heater or the heated position is damaged due to overhigh temperature, the plastic is carbonized and the like, and the method is particularly prominent in the unattended timing heating state.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides an extruding machine heating ultra-temperature protection system has solved the problem that exists today.
In order to achieve the above object, the utility model provides a following technical scheme: extruding machine heating ultra-high temperature protection system, including production line main power and PLC controller, its characterized in that: a heating power supply main switch is connected in series with the outside of the production line main power supply, a heating main contactor is connected in series with the outside of the heating power supply main switch, a plurality of heating branch switches are connected in series with the outside of the heating main contactor, the heating branch switches are connected in parallel, each heating branch switch is connected in series with one heating solid-state relay, and each heating solid-state relay is connected in series with one heater;
the external part of the PLC is connected with a touch screen through a network, an I/O module is arranged in the PLC, a first thermocouple analog input module and a second thermocouple analog input module are arranged in the PLC, and the first thermocouple analog input module and the second thermocouple analog input module are connected with a signal receiving module through connecting wires.
As a preferred technical scheme of the utility model, it has the heating insurance to establish ties between heating branch switch and the heating solid state relay, it has the ampere meter to establish ties between heating insurance and the heating solid state relay.
As a preferred technical scheme of the utility model, the outside of production line mains is established ties there is cooling power master switch, cooling power master switch is the parallel state with heating power master switch, cooling power master switch's outside is established ties there are a plurality of cooling blower ac contactor, and each cooling blower ac contactor is the parallel state, cooling power master switch's outside is established ties there is warm water groove pump ac contactor, warm water groove pump ac contactor is the parallel state with each cooling blower ac contactor, cooling power master switch's outside is established ties there is warm water groove heating contactor, warm water groove heating contactor is the parallel state with cooling blower ac contactor and warm water groove pump ac contactor.
As a preferred technical scheme of the utility model, the IO module is respectively the independent control each heat solid state relay open and stop, it has first auxiliary relay to establish ties between heating main contactor and the heating main switch, it has second auxiliary relay to establish ties between cooling blower ac contactor and the cooling power supply main switch, it has third auxiliary relay to establish ties between warm water tank pump ac contactor and the cooling power supply main switch, it has fourth auxiliary relay to establish ties between warm water tank heating contactor and the cooling power supply main switch, the actuation and the release of first auxiliary relay, second auxiliary relay, third auxiliary relay and fourth auxiliary relay are controlled respectively to the IO module.
As a preferred technical scheme of the utility model, the outside of cooling power supply master switch is established ties there is unusual alarm device, it has auxiliary relay five to establish ties between unusual alarm device and the cooling power supply master switch, five actuation and the release of the steerable auxiliary relay of IO module.
Compared with the prior art, the utility model provides an extruding machine heating ultra-temperature protection system possesses following beneficial effect:
1. after the plastic extruding machine heats the ultra-high temperature protection system, after the heating is started, sampling temperatures at all levels and target values thereof are calculated through a PLC (programmable logic controller), the PLC respectively sends corresponding on-off instructions to heating solid-state relays, and when the sampling values are equal to the target values, the conduction signals of the solid-state relays are cut off; the PLC controller sends out a corresponding fan starting instruction when the temperature exceeds the target value, and the fan stops after the temperature falls back to the target value; when the temperature is lower than the target value, the PLC controller sends a conducting signal to the corresponding solid-state relay, the heater is heated, and the operation is repeated in such a circulating way, so that the effect of accurately controlling the temperature is realized.
2. This extruding machine heating ultra-high temperature protection system, when arbitrary level control by temperature change because of solid state relay directly switches on when uncontrolled, the temperature lasts to rise, reach overtemperature protection target value after, the PLC controller sends out the instruction and cuts off heating total contactor control circuit, the heater of each level stops the heating simultaneously, each cooling blower starts, after the trouble is handled and is accomplished, press reset button, send out trouble reset instruction to the PLC controller, after reseing, the actuation of heating total contactor, heating power supply master switch switches on, the realization is avoided because of heating overtemperature damage equipment and heater's purpose.
3. The over-temperature protection target value and the temperature set values of all levels are not the same value, the PLC sends an instruction when any one-level temperature sampling value is larger than or equal to the over-temperature protection target value, the general heating power supply contactor is disconnected, and heating areas of all levels are not heated, so that the purpose of over-temperature protection is achieved.
Drawings
FIG. 1 is a schematic view of a main circuit of the present invention;
FIG. 2 is a schematic view of the second main circuit of the present invention;
fig. 3 is a schematic diagram of the connection relationship between the touch screen and the PLC controller of the present invention;
FIG. 4 is a schematic diagram of the PLC controller of the present invention;
FIG. 5 is a schematic diagram of an I/O module according to the present invention;
FIG. 6 is a schematic diagram of a thermocouple analog input module according to the present invention;
fig. 7 is a schematic diagram of the power control principle at all levels of the present invention.
In the figure: 1. a PLC controller; 2. a touch screen; 3. an I/O module; 4. a thermocouple analog input module I; 5. a second thermocouple analog input module; 6. and a signal receiving module.
Wherein: the heating power supply main switch is 1QS4, the heating main contactor is 4KM7, each stage of heating safety is 2FU1-2FU11, each stage of heating solid-state relay is D1-D8, the cooling fan AC contactor is 4KM2-4KM5, the warm water tank pump AC contactor is 4KM6, the warm water tank heating contactor is 5KM1, the first intermediate relay is 5KA8, the second intermediate relay is 6KA1-6KA4, the third intermediate relay is 6KA5, the fourth intermediate relay is 5KA10, and each stage of temperature acquisition signals are (B1+, B1-) - (B9+, B9-).
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-7, in this embodiment: the plastic extruding machine heating ultra-high temperature protection system comprises a production line main power supply and a PLC (programmable logic controller) 1, wherein a heating power supply main switch is connected in series outside the production line main power supply, a heating main contactor is connected in series outside the heating power supply main switch, a plurality of heating branch switches are connected in series outside the heating main contactor, the heating branch switches are in a parallel state, each heating branch switch is connected in series with a heating solid-state relay, and each heating solid-state relay is connected in series with a heater;
the external of the PLC controller 1 is connected with a touch screen 2 through a network, the internal of the PLC controller 1 is provided with an I/O module 3, the internal of the PLC controller 1 is provided with a first thermocouple analog input module 4 and a second thermocouple analog input module 5, the external of the first thermocouple analog input module 4 and the second thermocouple analog input module 5 are connected with a signal receiving module 6 through connecting wires, each heating part of the plastic extruding machine is provided with a temperature collector, the first thermocouple analog input module 4 and the second thermocouple analog input module 5 are in signal connection, the temperature collector transmits temperature collecting signals (B1+, B1) - (B9+, B9-) at all levels to the first thermocouple analog input module 4 and the second thermocouple analog input module 5, and control signals of heating solid-state relays at all levels are respectively provided by output ports of the I/O module 3 of the PLC,
in the embodiment, a heating fuse is connected in series between a heating branch switch and a heating solid-state relay, an ammeter is connected in series between the heating fuse and the heating solid-state relay, a cooling power supply main switch is connected in series outside a production line main power supply, the cooling power supply main switch and the heating power supply main switch are in a parallel state, a plurality of cooling fan alternating-current contactors are connected in series outside the cooling power supply main switch, each cooling fan alternating-current contactor is in a parallel state, a warm water tank pump alternating-current contactor is connected in series outside the cooling power supply main switch, the warm water tank pump alternating-current contactor and each cooling fan alternating-current contactor are in a parallel state, a warm water tank heating contactor is connected in series outside the cooling power supply main switch, and the warm water tank heating contactor, the cooling fan alternating-current contactor and the warm water tank pump alternating-current contactor are all in a parallel state;
the I/O module 3 respectively controls the start and stop of each heating solid-state relay independently, a first intermediate relay is connected in series between a heating main contactor and a heating main switch, a second intermediate relay is connected in series between a cooling fan AC contactor and a cooling power supply main switch, a third intermediate relay is connected in series between a warm water tank pump AC contactor and a cooling power supply main switch, a fourth intermediate relay is connected in series between a warm water tank heating contactor and a cooling power supply main switch, and the I/O module 3 respectively controls the actuation and release of the first intermediate relay, the second intermediate relay, the third intermediate relay and the fourth intermediate relay; the output signal of an I/O module 3 of the PLC controller 1 controls the suction and release of intermediate relays 5KA8, 6KA1-6KA4, 6KA5 and 5KA9, and then the working states of a heating main contactor 4KM7, a cooling fan AC contactor 4KM2-4KM5, a warm water tank pump AC contactor 4KM6 and a warm water tank heating contactor 5KM1 are respectively controlled by the intermediate relays;
an abnormal alarm device is connected in series with the outside of the cooling power supply main switch, an intermediate relay five is connected in series between the abnormal alarm device and the cooling power supply main switch, the I/O module 3 can control the suction and the release of the intermediate relay five, and when any stage of temperature control is not controlled because the solid state relay is directly conducted, the I/O module 3 sends a signal to start the abnormal alarm device to play a role in alarming;
set for overtemperature prote target temperature and target temperature at different levels in the touch-sensitive screen 2, overtemperature prote target temperature is for being far below the extreme temperature that equipment and heater can bear, be far away from the target value of heating setting temperature at different levels, target temperature at different levels is the process temperature, PLC controller 1 is introduced into through communication interface to touch-sensitive screen 2, the I/O module 3's in the PLC controller 1 input port output overtemperature prote reset signal, PLC controller 1's outside is provided with reset button, reset button is connected for the electricity with PLC controller 1.
The utility model discloses a theory of operation and use flow: after heating is started, after the sampling temperature of each stage and the target value of each stage are calculated through the PLC controller 1, the PLC controller 1 respectively sends out corresponding on-off instructions to each heating solid-state relay, and when the sampling value is equal to the target value, the conduction signal of the solid-state relay is cut off; the PLC controller 1 sends out a corresponding fan starting instruction when the temperature exceeds the target value, and the fan stops after the temperature falls back to the target value; when the temperature is lower than the target value, the PLC controller 1 sends a conducting signal to the corresponding solid-state relay, the heater heats, and the steps are repeated in such a circulating way, so that the effect of accurately controlling the temperature is realized; when any stage of temperature control is not controlled due to direct conduction of the solid-state relay, the temperature continuously rises, after the overtemperature protection target value is reached, the PLC controller 1 sends an instruction to disconnect a heating main contactor control loop, all stages of heaters stop heating at the same time, each cooling fan starts, after fault treatment is completed, a reset button is pressed, a fault reset instruction is sent to the PLC controller 1, after reset, the heating main contactor is attracted, a heating power supply main switch is switched on, and the purpose of avoiding damage to equipment and heaters due to overtemperature heating is achieved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. Extruding machine heating ultra-high temperature protection system, including production line main power and PLC controller (1), its characterized in that: the heating system is characterized in that a heating power supply main switch is connected in series to the outside of a production line main power supply, a heating main contactor is connected in series to the outside of the heating power supply main switch, a plurality of heating branch switches are connected in series to the outside of the heating main contactor, the heating branch switches are connected in parallel, each heating branch switch is connected in series with a heating solid-state relay, and each heating solid-state relay is connected in series with a heater;
the external portion of PLC controller (1) has touch-sensitive screen (2) through the internet access, the inside of PLC controller (1) is provided with IO module (3), the inside of PLC controller (1) is provided with thermocouple analog input module one (4) and thermocouple analog input module two (5), thermocouple analog input module one (4) and the outside of thermocouple analog input module two (5) are connected with signal reception module (6) through the connecting wire.
2. The extruder heated ultra high temperature protection system of claim 1, characterized in that: and a heating fuse is connected in series between the heating branch switch and the heating solid-state relay, and an ammeter is connected in series between the heating fuse and the heating solid-state relay.
3. The extruder heated ultra high temperature protection system of claim 1, characterized in that: the production line main power supply's outside is established ties there is cooling power supply main switch, cooling power supply main switch is parallel state with heating power supply main switch, cooling power supply main switch's outside is established ties and is had a plurality of cooling blower ac contactor, and each cooling blower ac contactor is parallel state, cooling power supply main switch's outside is established ties and is had warm basin pump ac contactor, warm basin pump ac contactor is parallel state with each cooling blower ac contactor, cooling power supply main switch's outside is established ties and is had warm basin heating contactor, warm basin heating contactor is parallel state with cooling blower ac contactor and warm basin pump ac contactor.
4. The extruder heated ultra high temperature protection system of claim 3, characterized in that: the I/O module (3) controls the start and stop of each heating solid-state relay respectively, an intermediate relay I is connected in series between a heating main contactor and a heating main switch, an intermediate relay II is connected in series between a cooling fan AC contactor and a cooling power supply main switch, an intermediate relay III is connected in series between a warm water tank pump AC contactor and a cooling power supply main switch, an intermediate relay IV is connected in series between a warm water tank heating contactor and a cooling power supply main switch, and the I/O module (3) controls the actuation and the release of the intermediate relay I, the intermediate relay II, the intermediate relay III and the intermediate relay IV respectively.
5. The extruder heated ultra high temperature protection system of claim 4, characterized by: an abnormality alarm device is connected in series with the outside of the cooling power supply main switch, an intermediate relay five is connected in series between the abnormality alarm device and the cooling power supply main switch, and the I/O module (3) can control the actuation and release of the intermediate relay five.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221461869.2U CN217476564U (en) | 2022-06-13 | 2022-06-13 | Heating ultra-high temperature protection system of plastic extruding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221461869.2U CN217476564U (en) | 2022-06-13 | 2022-06-13 | Heating ultra-high temperature protection system of plastic extruding machine |
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| Publication Number | Publication Date |
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| CN217476564U true CN217476564U (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221461869.2U Active CN217476564U (en) | 2022-06-13 | 2022-06-13 | Heating ultra-high temperature protection system of plastic extruding machine |
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| CN (1) | CN217476564U (en) |
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- 2022-06-13 CN CN202221461869.2U patent/CN217476564U/en active Active
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