CN105773950B - Optical cable extruding machine heat-insulation system - Google Patents
Optical cable extruding machine heat-insulation system Download PDFInfo
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- CN105773950B CN105773950B CN201610322946.9A CN201610322946A CN105773950B CN 105773950 B CN105773950 B CN 105773950B CN 201610322946 A CN201610322946 A CN 201610322946A CN 105773950 B CN105773950 B CN 105773950B
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- temperature
- extruding machine
- control unit
- insulation system
- optical cable
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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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- 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
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a kind of optical cable extruding machine heat-insulation system; including the time relay, temperature control unit, temperature sensing unit; and the time relay, temperature sensing unit are connected by circuit with temperature control unit respectively; time relay record shuts down duration; and exceed the shutdown time limit when shutting down duration; the desired temperature of each warm area of extruding machine is switched to drying temperature by temperature control unit by extrusion temperature, and after temperature is reduced to drying temperature, each warm area enters keeping warm mode；When needing start; the desired temperature of each warm area is switched to extrusion temperature by temperature control unit by drying temperature, and when the temperature of each warm area reaches extrusion temperature, extruding machine possesses compressor start up condition; wherein, shutting down the time limit is determined according to the heat-resisting fusion time of different extruded materials.Using the heat-insulation system, production temperature can be heated rapidly to, improves production efficiency；The service life of screw rod can be extended；Electric energy loss can be reduced.
Description
Technical field
The present invention relates to optical cable processing technique field, specifically, is related to a kind of optical cable extruding machine heat-insulation system.
Background technology
Optical cable production and application is single screw rod extruding machine, single screw rod be typically divided into effective length transportation section, compression section,
Metering section, screw rod need to heat to the material in barrel at work.In most cases, the warm area of extruding machine barrel has 4
~5, the warm area on extruding machine head has 2~4.In extruding machine work, each warm area needs to keep meeting extrusion molding material performance
Temperature.Each warm area to reach required for design temperature, it is necessary to a heating process.Resistance ring type mode of heating is slow, radiating is slow,
Power consumption is big, generally requires more than 2 hours.For quantity-produced line cable industry, the extruding machine short time shuts down, if closing extruding machine
The heater of each warm area, reheat during use, it is clear that production efficiency can be reduced.If but the heater of each warm area is not closed,
Heated condition is in for a long time, the material between screw rod and barrel due to being in plastifying state for a long time, it is easy to is carbonized.Carbon
Material after change is easy to penetrate into screw rod or firmly adsorb on screw rod, causes flight channel volume to change, and increases material
Viscosity in extrusion process, in turn result in compression section pressure transient, the inaccurate trouble of metering section metering.It is final to influence extrusion molding
The extrusion molding effect of machine, shorten screw rod service life.
Fig. 1 is the temperature control flow figure of optical cable extruding machine of the prior art, and it comprises the following steps：
Step S10, extruding machine shutdown.
Step S20, now, the temperature of each warm area is the extrusion temperature setting value A of material.
Step S30, judge whether to close heater, be to perform S40, otherwise perform S50, do not close heater,
S501, the actual temperature of each warm area keep extrusion temperature setting value A.
Step S40, manual-lock heater.
Step S401, the desired temperature of each warm area switch to 0.
Step S402, the actual temperature of each warm area drop to environment temperature through time T1.
Step S403, judge whether to start shooting, be, perform S405, otherwise perform S404, do not start shooting, keep standing state.
Step S405, the temperature for manually setting each warm area are extrusion temperature setting value A.
Step S406, the temperature of each warm area reach extrusion temperature setting value A from environment temperature elapsed time T2.
Step S60, start.
Step S70, extruding machine start.
As can be seen that extruding machine is shut down, if each warm area of extrusion molding is also heating, extruding machine, which is always held at, to be made at material
In the desired temperature A of extrusion molding state, extruding machine is started shooting at any time can enter production status.But electric energy is wasted, and easily lead
The material carbonization in plastifying state for a long time in barrel is caused, extrusion molding effect is influenceed, lowers screw rod service life.If close heating
Device, then each warm area temperature of extruding machine switches to setting value 0, that is, heater stop to heat by setting value A, and extrusion molding
Each warm area temperature value elapsed time T1 of machine is reduced to environment temperature by desired temperature A.If do not started shooting, environment is always maintained at
Temperature.If start, heater is again by each warm area by ambient temperature to desired temperature A, heat time T2,
Its low production efficiency.
The content of the invention
The invention provides a kind of optical cable extruding machine heat-insulation system, to solve to restart production after optical cable extruding machine is shut down
The problems such as efficiency is low or power consumption is big, continuous heating shortens the screw rod life-span.
According to an aspect of the invention, there is provided a kind of optical cable extruding machine heat-insulation system, including the time relay, temperature
Control unit, temperature sensing unit, wherein, temperature control unit also includes extruded material determining unit and extrusion temperature determines list
Member, and the time relay, temperature sensing unit are connected by circuit with temperature control unit respectively, and temperature sensing unit will be real
When the temperature value that measures send temperature control unit to, when extruding machine is shut down, time relay start recording shuts down duration, when
Shut down duration and exceed shutdown time limit, extrusion molding of the temperature control unit by the desired temperature of each warm area of extruding machine by extruded material
Temperature switches to the drying temperature of extruded material, and after temperature is reduced to the drying temperature of extruded material, each warm area enters insulation
State；When needing start, extruded material determining unit knows the extruded material species in extruding machine, and sends a signal to extrusion molding
Temperature determining unit, extrusion temperature determining unit set the temperature of each warm area with reference to extrusion temperature parameter list according to material category
Definite value is switched to the extrusion temperature of extruded material by the drying temperature of extruded material, when the temperature of each warm area reaches extruded material
During extrusion temperature, extruding machine possesses compressor start up condition, wherein, the shutdown time limit is the resistance to thermoplastification according to different extruded materials
What the time determined.
Alternatively, in addition to protection location, if the temperature of each warm area of extruding machine is not up to the extrusion temperature of extruded material,
Protection location forbids extruding machine to start.
Alternatively, when extruding machine is switched to heated condition by temperature control unit by keeping warm mode, the time relay is clear
Zero.
Alternatively, it is limited to during the shutdown of PE materials 1.5 hours.
Alternatively, it is limited to during the shutdown of PVC material 0.5 hour.
Alternatively, it is limited to during the shutdown of PP materials 0.25 hour.
Alternatively, it is limited to during the shutdown of fire proofing 0.5 hour.
Alternatively, temperature control unit also has the temp control switch being turned on and off for being used for controlling heater,
The temp control switch has heating gear, retaining catch, mold changing gear, is started by switching gear or traction, controls extruding machine
Heated condition.
Alternatively, when extruding machine starts under keeping warm mode, temp control switch is first switched into retaining catch by heating gear
Or mold changing gear, then heating gear is switched back into, extruding machine enters heated condition.
Alternatively, extruding machine launches into heated condition by traction.
The optical cable extruding machine heat-insulation system of the present invention, the holding temperature of each warm area is preset according to the characteristic of different material
And the time limit is shut down, each warm area of extruding machine, automatically into keeping warm mode, can on the one hand avoid each according to the shutdown time limit of setting
After warm area stops heating, extrusion temperature is warmed to again by environment temperature and is lost time；On the other hand each warm area is avoided to keep
In extrusion temperature state, carbonization material absorption influences extrusion molding effect, shortens screw rod service life on screw rod.
Brief description of the drawings
By the way that embodiment is described with reference to accompanying drawings below, features described above of the invention and technological merit will become
More understand and be readily appreciated that.
Fig. 1 is the temperature control flow figure for representing the optical cable extruding machine that prior art is related to；
Fig. 2 be represent the present embodiments relate to optical cable extruding machine heat-insulation system schematic diagram；
Fig. 3 be represent the present embodiments relate to temperature control unit schematic diagram；
Fig. 4 be represent the present embodiments relate to optical cable extruding machine heat-insulation system control flow chart.
Embodiment
The embodiment of optical cable extruding machine heat-insulation system of the present invention described below with reference to the accompanying drawings.This area it is general
Logical technical staff will recognize, without departing from the spirit and scope of the present invention, can use a variety of modes
Or its combination is modified to described embodiment.Therefore, accompanying drawing and description are inherently illustrative, rather than are used for
Limit scope of the claims.In addition, in this manual, accompanying drawing is drawn not in scale, and identical reference
Represent identical part.
The present embodiment provides a kind of optical cable extruding machine heat-insulation system, as shown in Fig. 2 extruding machine 1 include the time relay 2,
Temperature sensing unit 3, temperature control unit 4, and the time relay, temperature sensing unit pass through circuit and temperature control respectively
Unit connects, and when extruding machine is shut down, time relay start recording shuts down duration, when shutting down duration more than the shutdown set
In limited time, temperature control unit switches to the temperature of extruding machine from the extrusion temperature of material the drying temperature of material, and controls and add
Thermal makes temperature be reduced to drying temperature, is incubated after reaching drying temperature；When extruding machine needs start, temperature control
The temperature of each warm area is adjusted to the extrusion temperature of material by unit by the drying temperature of material.Wherein, it is according to not to shut down the time limit
With material heat-resisting fusion time determine.As shown in figure 3, more specifically, it is true that temperature control unit 4 also includes extruded material
Order member 41 and extrusion temperature determining unit 42.Extruded material determining unit 41 is used to determine that the material category in extruding machine is concurrent
The number of delivering letters gives extrusion temperature determining unit 42, and extrusion temperature determining unit 42 is according to the material category in extruding machine, with reference to extrusion molding
Temperature parameter table determines extrusion temperature setting value.
Extruding machine shutdown is the trigger condition of the time relay.When extruding machine operates, the time relay is idle.
Extruding machine is shut down, such as is operated handing-over, overhaul of the equipments etc., now needs to shut down extruding machine, and the time relay is from extrusion molding
Machine shuts down the start recording time.The present embodiment is described in detail referring to Fig. 4 flow chart.
Step S100, extruding machine are shut down.S200, when now the desired temperature of each warm area is still maintained at extruding machine work
Temperature, even if material reach the desired temperature A of extruding condition, it is necessary to explanation, when extruding machine being run well herein
The different desired temperature of each warm area is collectively referred to as desired temperature A.
Step S300, the time relay start timing.
Step S400, prescribed a time limit when shutting down duration and reaching the shutdown of setting, then step S500, the time relay send signal
To temperature control unit, the temperature of each warm area is switched into holding temperature setting value B by extrusion temperature setting value A.Wherein, temperature
Setting value B is the temperature value that material in extruding machine reaches oven-dried condition.
Step S600, temperature control unit, which starts to adjust heater, reduces temperature, and extruding machine is by the T3 times from normal
Extrusion temperature value during operating is reduced to desired temperature B.
Step S700, after temperature value B is reached, extruding machine is switched to keeping warm mode by temperature control unit.Now,
S800, extruding machine are in guard mode, and extruding machine can not start.Because the extrusion temperature of different materials, drying temperature are different, because
This, it, which shuts down time limit, is determined respectively according to the heat-resisting fusion time of different extruded materials, and it shuts down time limit and each
The extrusion temperature value of material is by the extruded material determining unit and extrusion temperature determining unit of temperature control unit according to table 1 come really
It is fixed.
Step S900, judge whether to start shooting, if do not started shooting, then S9001, keeps present state of temperature.When needing to produce
When, then S9002, after temperature control unit obtains start-up command, temperature control unit control heater, is in extruding machine and adds
Warm status.After extruded material determining unit knows the material category in extruding machine, extrusion temperature determining unit is sent a signal to, is squeezed
Temperature determining unit is moulded according to the material category in extruding machine, extrusion temperature setting value A is determined with reference to extrusion temperature parameter list.
Step S9003, the temperature actual value elapsed time T3 of each warm area reach extrusion temperature setting value A, now reached out
Machine condition.
Now, you can perform step S9004, boot up operation.
Step S9005, extruding machine start.
With reference to noted earlier, it is clear that T2 ＞ T1 ＞ T3, it is seen then that without heat-insulation system extruding machine need with it is very long when
Between be heated to produce required temperature.And the extruding machine with heat-insulation system, then it can reach production with the shorter time
Required temperature.
The present embodiment uses temperature control unit, combination temperature sensing unit, the time relay, according to different extrusion materials
The heat-resisting fusion time of material, to determine to shut down the time limit, the shutdown time limit exceedes the material duration of resistance to thermoplastification, and temperature control unit will squeeze
Molding machine is switched to low-temperature insulation state.Thus, prevent the extruded material of damage and carbonization of the long-time heating to screw rod to spiral shell
The infiltration of bar, the service life for extending screw rod effectively reduce electric energy loss.The conventional use of sheath extruding machines of Φ 90 have 9
Warm area, comprehensive heating power are 40.5 kilowatts., can be effective in heat time and insulating process using automatic heat preserving system
Reduction electric energy loss, and effectively reduce the heat time more than 50%.
In one alternate embodiment, as shown in Fig. 2 the heat-insulation system also includes protection location 5, protection location 5 passes through
Circuit and temperature control unit 4 connect, feedback control extruding machine 1.Upon power-up, whether protection location detection temperature control unit
The temperature of each warm area is switched to extrusion temperature by drying temperature, also, the temperature value of combination temperature sensing unit detection judges
Whether the temperature of each warm area reaches extrusion molding set temperature value.If the desired temperature of warm area is not switched to by temperature control unit
Extrusion temperature, then protection location temperature indicator control unit switches over, and forbids extruding machine to start.And when the setting of extruding machine
When temperature is not up to setting value A, temperature control unit also forbids extruding machine to start.So as to avoid, because operator neglects, squeezing
Modeling temperature starts extruding machine when not reaching extrusion temperature, and extruding machine is damaged.
It is extrusion molding that the extruded material that optical cable extruding machine uses, which has four kinds of materials, the tables 1 such as PE material, PVC material, PP material and flame-proof material,
Temperature parameter table, including data such as extrusion temperature, drying temperature, heat-resistant times.
Table 1
Illustrate the present embodiment, such as PE materials with reference to table 1, when extruding machine works, the temperature of its each warm area is not
Together, but in the present embodiment extrusion temperature setting value A1 is collectively referred to as, its drying temperature is 75 DEG C, that is, holding temperature setting value
For B1, its heat-resistant time is 1.5 hours.Temperature sensor is both provided with each temperature range, after extruding machine is shut down, the time
Relay starts timing, when shut down duration reach 1.5 it is small when, the time relay sends a signal to temperature control unit, temperature control
Extrusion temperature setting value A1 is switched to holding temperature setting value B1 by unit processed.Temperature control unit controls heater, makes each
The temperature of warm area reduces, and when temperature is reduced to 75 DEG C, temperature stops reducing and being maintained at 75 DEG C.Before extruding machine start, need
Heater is first controlled by temperature control unit, each temperature-raising region temperature raising is then booted up again to extrusion temperature setting value A1
Production.That is, after extruded material determining unit determines the material category in extruding machine, extrusion temperature determination is sent a signal to
The temperature of each warm area is set as extrusion molding by unit, extrusion temperature determining unit according to material category with reference to extrusion temperature parameter list
Desired temperature A1.And protection location can protect extruding machine by detecting the temperature of switching state and each warm area.In temperature
When the temperature that degree control unit does not switch to plasticization temperature or each warm area is not up to plasticization temperature, protection location forbids extruding machine to open
It is dynamic.And in the prior art, due to without insulation after shutdown, in the case where closing heater, the temperature of each warm area is from crowded
Modeling desired temperature A1 is reduced to environment temperature.Extruding machine start shooting when, then from environment temperature be increased to each warm area material plasticizing
Temperature.Comparatively speaking, the optical cable extruding machine heat-insulation system of the present embodiment can save substantial amounts of energy resource consumption, and can carry
High efficiency.
In addition, according to the content of table 1, the PVC shutdown time limits expected can be set as 0.5 hour, during the shutdown that PP is expected
Limit is set as 0.25 hour, and the shutdown time limit of flame-proof material is set as into 0.5 hour.For different materials, different stop is set
Machine time limit, various extruded materials can reach the purpose for saving the energy by the extruding machine heat-insulation system.
In addition, when extruding machine is switched to heated condition by temperature control unit by keeping warm mode, the time relay is reset,
Prepared so as to shut down duration for record next time.
In addition, temperature control unit also has temp control switch, temperature control unit, which also has, to be used to control heating dress
The temp control switch being turned on and off put, the temp control switch has heating gear, retaining catch, mold changing gear, by cutting
Gearshift position or traction start, and control the heated condition of extruding machine.
When extruding machine starts under keeping warm mode, temp control switch is first switched into retaining catch or mold changing by heating gear
Gear, then heating gear is switched back into, extruding machine can enter heated condition.
Or extruding machine can also launch into heated condition by traction.
In summary, optical cable extruding machine heat-insulation system of the invention realizes following technique effect：
1) heat-insulation system is used, production temperature can be heated rapidly to, improves production efficiency.
2) heat-insulation system is used, the extruded material of damage and carbonization of the long-time heating to screw rod can be prevented to spiral shell
The infiltration of bar, so as to extend the service life of screw rod.
3) heat-insulation system is used, avoids material from being carbonized and adsorb on screw rod, so as to ensure the extrusion molding effect of material.
4) heat-insulation system is used, can effectively reduce the heat time more than 50%, electric energy loss can be effectively reduced.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of optical cable extruding machine heat-insulation system, including the time relay, temperature control unit, temperature sensing unit, wherein, temperature
Degree control unit also includes extruded material determining unit and extrusion temperature determining unit, and the time relay, TEMP list
Member is connected by circuit with temperature control unit respectively, and temperature sensing unit sends the temperature value measured in real time to temperature control
Unit,
When extruding machine is shut down, time relay start recording shuts down duration, exceedes shutdown time limit, temperature control when shutting down duration
Unit is switched to the desired temperature of each warm area of extruding machine by the extrusion temperature of extruded material the drying temperature of extruded material,
After temperature is reduced to the drying temperature of extruded material, each warm area enters keeping warm mode；
When needing start, extruded material determining unit knows the extruded material species in extruding machine, and sends a signal to extrusion molding
Temperature determining unit, extrusion temperature determining unit set the temperature of each warm area with reference to extrusion temperature parameter list according to material category
Definite value is switched to the extrusion temperature of extruded material by the drying temperature of extruded material, when the temperature of each warm area reaches extruded material
During extrusion temperature, extruding machine possesses compressor start up condition,
Wherein, the shutdown time limit is determined according to the heat-resisting fusion time of different extruded materials.
2. optical cable extruding machine heat-insulation system according to claim 1, it is characterised in that also including protection location, work as start
When, if the desired temperature of each warm area is not switched to extrusion temperature setting value, protection location prompting temperature by temperature control unit
Degree control unit switches over, and forbids extruding machine to start；
If the temperature of each warm area of extruding machine is not up to the extrusion temperature of extruded material, protection location also forbids extruding machine to start.
3. optical cable extruding machine heat-insulation system according to claim 1, it is characterised in that when temperature control unit is by extruding machine
When switching to heated condition by keeping warm mode, the time relay is reset.
4. optical cable extruding machine heat-insulation system according to claim 1, it is characterised in that be limited to during the shutdown of PE materials
1.5 hour.
5. optical cable extruding machine heat-insulation system according to claim 1, it is characterised in that the shutdown time limit of PVC material
For 0.5 hour.
6. optical cable extruding machine heat-insulation system according to claim 1, it is characterised in that be limited to during the shutdown of PP materials
0.25 hour.
7. optical cable extruding machine heat-insulation system according to claim 1, it is characterised in that the shutdown time limit of fire proofing
For 0.5 hour.
8. optical cable extruding machine heat-insulation system according to claim 1, it is characterised in that temperature control unit, which also has, to be used for
The temp control switch being turned on and off of heater is controlled, the temp control switch has heating gear, retaining catch, mold changing
Gear, started by switching gear or traction, control the heated condition of extruding machine.
9. optical cable extruding machine heat-insulation system according to claim 8, it is characterised in that extruding machine starts under keeping warm mode
When, temp control switch is first switched into retaining catch by heating gear or mold changing is kept off, then heating gear is switched back into, extruding machine enters heating
State.
10. optical cable extruding machine heat-insulation system according to claim 8, it is characterised in that extruding machine by traction start into
Enter heated condition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610322946.9A CN105773950B (en) | 2016-05-16 | 2016-05-16 | Optical cable extruding machine heat-insulation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610322946.9A CN105773950B (en) | 2016-05-16 | 2016-05-16 | Optical cable extruding machine heat-insulation system |
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| CN105773950B true CN105773950B (en) | 2018-02-16 |
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| CN110456839A (en) * | 2019-08-27 | 2019-11-15 | 昌龙兴科技（深圳）有限公司 | A kind of intelligent temperature control system based on PID |
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| CN204936182U (en) * | 2015-08-28 | 2016-01-06 | 武汉工程大学 | A kind of temperature control system of heat pressing forming machines |
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