CN115339084A - Continuous forming die temperature control system and control method - Google Patents
Continuous forming die temperature control system and control method Download PDFInfo
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- CN115339084A CN115339084A CN202210761152.8A CN202210761152A CN115339084A CN 115339084 A CN115339084 A CN 115339084A CN 202210761152 A CN202210761152 A CN 202210761152A CN 115339084 A CN115339084 A CN 115339084A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000498 cooling water Substances 0.000 claims abstract description 38
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 31
- 238000012546 transfer Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000000465 moulding Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 8
- 239000002826 coolant Substances 0.000 description 7
- 239000003814 drug Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/786—Temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Continuous type forming die temperature control system, including heat transfer medium case, circulating pump, heat exchanger, flowmeter and control module, the flowmeter is located between forming die and the heat transfer medium case, establishes first temperature measurement part between circulating pump and the heat exchanger, is equipped with second temperature measurement part between heat exchanger and the forming die, and the heat exchanger is connected with the cooling water outlet pipe and takes the cooling water inlet tube of cooling valve, and flowmeter, first temperature measurement part, second temperature measurement part and cooling valve all with control module signal connection. The control method comprises the following steps: a) Detecting the temperature of a heat exchange medium in the heat exchange medium box, and if the temperature is lower than a first set temperature, heating until the temperature reaches the first set temperature; b) The forming die is started, the heat exchange medium flows back through the flowmeter, and the control module controls the heat exchange between cooling water and the heat exchange medium in the heat exchanger according to the temperature difference value detected by the first temperature measurement component and the second temperature measurement component and the flow control value detected by the flowmeter, so that the temperature detected by the second temperature measurement component is at the second set temperature.
Description
Technical Field
The invention relates to a forming die in continuous blowing encapsulation equipment, in particular to a temperature control system and a temperature control method for a continuous forming die.
Background
Continuous blowing-filling-sealing integrated machine (BFS) equipment adopts a continuous extrusion molding mode, a molding die continuously operates, the cycle period is only 3-5S, plastic fluid needs to be changed from a molten state at about 170 ℃ to a solid state at about 50 ℃ in a short time (6-10S), and the molded sheet can be uniformly shrunk and consistent in size only by keeping the molding die in a stable heat exchange process in the continuous molding process so as to ensure the subsequent trimming effect, so that the temperature control requirement on the molding die is very high.
Current mould temperature control system lets in forming die's cooling runner through the coolant (generally the higher water of cleanliness factor) in the circulating pump with the water tank mostly, cools down to forming die, and the temperature risees after the coolant absorbed the heat, need carry out the heat transfer cooling (usually carry out the heat transfer with municipal tap water) in the heat exchanger, then in backward flow to the water tank, realizes cyclic utilization. The existing mould temperature control system has the following defects: if the temperature sensor on the outlet side of the circulating pump detects that the temperature of the cooling medium is higher than normal, the system can correspondingly increase the heat exchange amount in the heat exchanger so as to further reduce the temperature of the subsequent cooling medium, however, the cooling medium needs to pass through the water tank and can enter the forming mold after being mixed with the cooling medium with higher temperature in the water tank, so that the response speed is lower than normal, the temperature control is not sensitive enough, and the temperature control requirement of the forming mold in the continuous blowing and filling and sealing equipment cannot be met. In addition, if the temperature of the cooling medium is low, on one hand, condensed water is easily generated on the surface of the mold after entering the forming mold, and the environment for producing the medicine can be polluted, the condensed water entering the cavity of the forming mold can also influence the appearance quality of the formed plastic container, on the other hand, the temperature of the forming mold is easily low, and further the formed plastic container is hard, and the continuous forming mold is different from the traditional linear reciprocating forming mold due to the adoption of the circulating operation, the mold clamping force is smaller than that of the reciprocating forming mold, so that a cutting seam is difficult to form on the hard container, and the subsequent procedures are influenced. When the temperature of the forming mold exceeds 100 ℃, a large amount of water vapor is generated when cooling water flows through the forming mold, and the water vapor directly circulates into the water pump to damage the water pump, so that the service life of the water pump is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a temperature control system for a forming die, which is sensitive in temperature control and high in precision.
The invention further provides a control method of the forming die temperature control system.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a continuous type forming die temperature control system, includes heat transfer medium case, circulating pump, heat exchanger, flowmeter and control module, the heat transfer medium case with the entry linkage of circulating pump, the export of circulating pump with the heat transfer medium entry linkage of heat exchanger, the heat transfer medium export of heat exchanger and forming die's access connection, the flowmeter connect in forming die's export with between the heat transfer medium case, the circulating pump with be equipped with first temperature measurement part between the heat exchanger, be equipped with second temperature measurement part between heat exchanger and the forming die, the heat exchanger is connected with cooling water inlet tube and cooling water outlet pipe, be equipped with the cooling valve on the cooling water inlet tube, flowmeter, first temperature measurement part, second temperature measurement part and cooling valve all with control module signal connection.
As a further improvement of the above technical solution: and the heat exchange medium box is provided with a heater and a third temperature measurement component, and the heater and the third temperature measurement component are in signal connection with the control module.
As a further improvement of the above technical solution: an overflow pipe is further arranged on the heat exchange medium box.
As a further improvement of the above technical solution: the heat exchange medium box is also provided with a liquid level meter which is in signal connection with the control module.
As a further improvement of the technical scheme: the heat exchange medium adopts cooling water, still be equipped with first filter on the cooling water inlet tube, the delivery port of first filter pass through the moisturizing valve with the heat exchange medium case is connected, the moisturizing valve with the control module electricity is connected.
As a further improvement of the technical scheme: the temperature of the cooling water in the cooling water inlet pipe is 5-15 ℃.
As a further improvement of the above technical solution: and a second filter is arranged between the forming die and the flowmeter.
As a further improvement of the above technical solution: and an overflow bypass valve is also connected between the heat exchange medium outlet of the heat exchanger and the heat exchange medium tank.
As a further improvement of the above technical solution: the control module is a PID control module.
A control method of a continuous forming die temperature control system comprises the following steps:
a) The third temperature measuring component detects the temperature of the heat exchange medium in the heat exchange medium box, and if the temperature is lower than the first set temperature, the heater heats the heat exchange medium until the heat exchange medium reaches the first set temperature; if not, performing the step b);
b) The forming die is started, the heat exchange medium in the heat exchange medium box is conveyed to the forming die by the circulating pump, the heat exchange medium flowing out of the forming die flows back to the heat exchange medium box through the flowmeter, and the control module exchanges heat with the heat exchange medium according to the difference value between the temperature detected by the first temperature measurement component and the temperature detected by the second temperature measurement component and the flow control heat exchanger detected by the flowmeter, so that the temperature detected by the second temperature measurement component is at the second set temperature.
Compared with the prior art, the invention has the advantages that: according to the continuous forming die temperature control system disclosed by the invention, the heat exchange medium exchanges heat with the heat exchanger and is cooled, and then enters the forming die for heat exchange, so that the temperature of the forming die is kept stable, and if the temperature of the heat exchange medium detected by the second temperature measuring part is overhigh, the heat exchanger can immediately increase the heat exchange amount with a subsequent heat exchange medium, so that the temperature of the subsequent heat exchange medium before entering the forming die meets the requirement, and the response speed is higher; the inlet side and the outlet side of a heat exchange medium of the heat exchanger are respectively provided with a first temperature measuring component and a second temperature measuring component which are matched with a flowmeter to detect the flow of the heat exchange medium, so that the heat exchange quantity of the heat exchange medium in the heat exchanger can be accurately controlled. Experiments show that the temperature control system of the forming die disclosed by the invention can control the temperature of the forming die to be +/-0.5 ℃ of the set temperature, and the control precision is very high.
The invention discloses a control method of a continuous forming die temperature control system, which comprises the steps of firstly heating a heat exchange medium by using a heater before the heat exchange medium in a heat exchange medium box reaches a set temperature, so that the heat exchange medium with too low temperature enters a forming die, condensed water is generated on the surface of the forming die, the medicine production environment is polluted, the appearance quality of a formed plastic container is influenced, and the problems that the temperature of the forming die is too low, the formed plastic container is too hard and the like are also avoided; the control module is used for matching the flow of the heat exchange medium detected by the flowmeter according to the temperatures detected by the first temperature measuring component and the second temperature measuring component, and accurately controlling the heat exchange quantity of the heat exchange medium in the heat exchanger. Experiments show that the control method of the forming die temperature control system disclosed by the invention can control the temperature of the forming die to be +/-0.5 ℃ at the set temperature, and the control precision is very high.
Drawings
FIG. 1 is a schematic structural diagram of a continuous molding die temperature control system according to the present invention.
Fig. 2 is a schematic perspective view of a continuous molding die according to the present invention.
The reference numerals in the figures denote: 1. a heat exchange medium tank; 11. a heater; 12. a third temperature measuring part; 13. an overflow pipe; 14. a liquid level meter; 2. a circulation pump; 3. a heat exchanger; 31. a cooling water inlet pipe; 32. a cooling water outlet pipe; 33. a cooling valve; 34. a first filter; 35. a water replenishing valve; 4. a flow meter; 5. a control module; 6. forming a mold; 61. a mold monomer; 71. a first temperature measuring part; 72. a second temperature measuring part; 73. a second filter; 8. an overflow bypass valve.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
Example one
Fig. 1 to 2 show an embodiment of a continuous forming die temperature control system according to the present invention, the forming die temperature control system of this embodiment includes a heat exchange medium tank 1, a circulation pump 2, a heat exchanger 3, a flow meter 4 and a control module 5, the heat exchange medium tank 1 is connected to an inlet of the circulation pump 2, an outlet of the circulation pump 2 is connected to a heat exchange medium inlet of the heat exchanger 3, a heat exchange medium outlet of the heat exchanger 3 is connected to an inlet of the forming die 6, the flow meter 4 is connected between an outlet of the forming die 6 and the heat exchange medium tank 1, a first temperature measurement component 71 is disposed between the circulation pump 2 and the heat exchanger 3, a second temperature measurement component 72 is disposed between the heat exchanger 3 and the forming die 6, the heat exchanger 3 is connected to a cooling water inlet pipe 31 and a cooling water outlet pipe 32, a cooling valve 33 is disposed on the cooling water inlet pipe 31, and the flow meter 4, the first temperature measurement component 71, the second temperature measurement component 72 and the cooling valve 33 are in signal connection with the control module 5. As shown in fig. 2, the molding die 6 includes a plurality of die units 61, and the plurality of die units 61 continuously operate and are molded in a circulating manner; the first temperature measuring member 71 and the second temperature measuring member 72 may be temperature sensors, for example; the heat exchanger 3 preferably adopts a plate heat exchanger, and has high efficiency.
According to the continuous forming die temperature control system, the heat exchange medium exchanges heat and cools with the heat exchanger 3 firstly, and then enters the forming die 6 for heat exchange, so that the temperature of the forming die 6 is kept stable, if the temperature of the heat exchange medium detected by the second temperature measuring part 72 is too high, the heat exchange amount of the heat exchanger 3 and a subsequent heat exchange medium can be increased immediately, so that the temperature of the subsequent heat exchange medium before entering the forming die 6 meets the requirement, and the response speed is higher; a first temperature measuring part 71 and a second temperature measuring part 72 are respectively arranged on the inlet side and the outlet side of a heat exchange medium of the heat exchanger 3, and the flowmeter 4 is matched to detect the flow of the heat exchange medium flowing back to the heat exchange medium box 1, so that the heat exchange quantity of the heat exchange medium in the heat exchanger 3 can be accurately controlled. Experiments show that the temperature control system of the forming die disclosed by the invention can control the temperature of the forming die 6 to be +/-0.5 ℃ of the set temperature, and the control precision is very high.
Further, in this embodiment, a heater 11 and a third temperature measurement component 12 are disposed on the heat exchange medium tank 1, and both the heater 11 and the third temperature measurement component 12 are in signal connection with the control module 5. The heater 11 may be an electric heater, for example, and the third temperature measuring member 12 may be a temperature sensor, a thermometer, for example. If the heat exchange medium in the heat exchange medium box 1 is lower than the set temperature, then the control module 5 controls the heater 11 to be opened, the temperature of the heat exchange medium is measured in real time by the third temperature measurement part 12, when the temperature of the heat exchange medium is detected to reach the set temperature, the heater 11 stops heating, the structure is simple and reliable, the problem that the heat exchange medium with too low temperature enters the forming mold 6, condensate water is generated on the surface of the forming mold 6, the medicine production environment is polluted, the appearance quality of the formed plastic container is influenced, and the problem that the formed plastic container is hard due to the fact that the temperature of the forming mold 6 is low is solved.
Further, in this embodiment, an overflow pipe 13 is further disposed on the heat exchange medium tank 1. When the temperature of the forming die 6 exceeds 100 ℃, clean water is used as a heat exchange medium, the heat exchange medium can generate a large amount of steam after passing through the forming die 6, and when the steam returns to the heat exchange medium tank 1, one part of the steam can be cooled into liquid by the water in the heat exchange medium tank 1, redundant gas can overflow from the overflow pipe 13, and the phenomenon that a water-gas mixture enters the circulating pump 2 to influence the service life of the circulating pump 2 is avoided, so that the system can be used for the working condition exceeding 100 ℃. Of course, if the liquid level in the heat exchange medium tank 1 is too high, the liquid can overflow through the overflow pipe 13.
In a preferred embodiment, the heat exchange medium tank 1 is further provided with a liquid level meter 14, and the liquid level meter 14 is in signal connection with the control module 5. The liquid level meter 14 can detect the liquid level in the heat exchange medium tank 1 in real time, and when the liquid level is too low, the liquid level is supplemented in time.
Further, in this embodiment, the heat exchange medium adopts cooling water, the specific heat capacity of water is big and with low costs, easily acquires, still is equipped with first filter 34 on the cooling water inlet pipe 31, and the delivery port of first filter 34 passes through water replenishing valve 35 and is connected with heat exchange medium case 1, and water replenishing valve 35 is connected with control module 5 electricity. When the liquid level meter 14 detects that the liquid level in the heat exchange medium box 1 is too low, the water replenishing valve 35 is opened, the cooling water is filtered by the first filter 34 and then enters the heat exchange medium box 1, so that the cooling water is replenished in time, when the liquid level reaches a high position, the water replenishing valve 35 is closed, the automation degree and the intelligence degree are high, the first filter 34 can filter out impurities in the cooling water, the cooling water entering the forming mold 6 is ensured to have higher cleanliness, and the pollution is avoided.
Further, the temperature of the cooling water in the cooling water inlet pipe 31 is 5 to 15 ℃, and preferably the temperature of the cooling water in the cooling water inlet pipe 31 is 7 to 12 ℃.
Further, in the present embodiment, the second filter 73 is provided between the molding die 6 and the flowmeter 4. After being filtered by the second filter 73, the cooling water flowing out of the forming die 6 flows back to the heat exchange medium box 1 through the flow meter 4, so that impurities in the returned cooling water can be prevented from damaging the flow meter 4 and entering the heat exchange medium box 1 again.
Further, in this embodiment, an overflow bypass valve 8 is further connected between the heat exchange medium outlet of the heat exchanger 3 and the heat exchange medium tank 1. Under specific conditions (for example, the forming die 6 breaks down, etc.), the overflow bypass valve 8 is opened, and the heat exchange medium flowing out of the heat exchange medium outlet can directly flow back to the heat exchange medium tank 1 through the overflow bypass valve 8 without passing through the forming die 6, so that the device is more convenient and flexible.
As a preferred embodiment, the control module 5 is a PID control module, and is sensitive in temperature control and high in control precision.
Example two
The control method of the continuous forming die temperature control system of the embodiment comprises the following steps:
a) The third temperature measuring component 12 detects the temperature of the heat exchange medium in the heat exchange medium box 1, and if the temperature is lower than the first set temperature, the heater 11 heats the heat exchange medium until the heat exchange medium reaches the first set temperature; if not, performing the step b);
b) The forming die 6 is started, the circulating pump 2 conveys the heat exchange medium in the heat exchange medium box 1 to the forming die 6, the heat exchange medium flowing out of the forming die 6 flows back to the heat exchange medium box 1 through the flowmeter 4, and the control module 5 detects the temperature T according to the first temperature measurement part 71 1 With the temperature T detected by the second thermometric component 72 2 The difference value and the flow Q detected by the flowmeter 4 control the heat exchange between the cooling water and the heat exchange medium in the heat exchanger 3, and the specific heat exchange quantity between the heat exchange medium and the cooling water is equal to (T) 1 -T 2 ) xQ correlation such that the temperature sensed by the second thermometric component 72 is at the second set temperature. Preferably, the second set temperature is 55-50 ℃, which is slightly higher than the temperature of the plastic container after the plastic container is changed into a solid state, so that the molding quality of the plastic container is ensured; the first set temperature may be the same as the second set temperature, or slightly higher than the second set temperature, for example, 57 ℃, to compensate for a small drop in temperature during the flow from the heat exchange medium tank 1 to the second temperature measurement part 72, and thus to flow into the molding die 6 at the second set temperature.
According to the control method of the continuous forming die temperature control system, before the heat exchange medium in the heat exchange medium box 1 reaches the set temperature, the heat exchange medium is heated by the heater 11, so that the heat exchange medium with too low temperature is prevented from entering the forming die 6, condensate water is generated on the surface of the forming die 6, the medicine production environment is polluted, the appearance quality of a formed plastic container is influenced, and the problems that the temperature of the forming die 6 is too low, the formed plastic container is too hard, a cutting seam is difficult to form on the hard container and the like are also avoided; the control module 5 precisely controls the heat exchange amount of the heat exchange medium in the heat exchanger 3 through the cooling valve 33 according to the difference value of the temperatures detected by the first temperature measuring component 71 and the second temperature measuring component 72 and the flow rate of the heat exchange medium detected by the flow meter 4. Experiments show that the control method of the forming die temperature control system disclosed by the invention can control the temperature of the forming die 6 to be +/-0.5 ℃ of the set temperature, and the control precision is very high.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed solution, or modify equivalent embodiments using the teachings disclosed above, without departing from the scope of the solution. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention, unless the technical essence of the present invention departs from the content of the technical solution of the present invention.
Claims (10)
1. The utility model provides a continuous type forming die temperature control system which characterized in that: including heat transfer medium case (1), circulating pump (2), heat exchanger (3), flowmeter (4) and control module (5), heat transfer medium case (1) with the entry linkage of circulating pump (2), the export of circulating pump (2) with the heat transfer medium entry linkage of heat exchanger (3), the heat transfer medium export of heat exchanger (3) and the access connection of forming die (6), flowmeter (4) connect in the export of forming die (6) with between heat transfer medium case (1), circulating pump (2) with be equipped with first temperature measurement part (71) between heat exchanger (3), be equipped with second temperature measurement part (72) between heat exchanger (3) and forming die (6), heat exchanger (3) are connected with cooling water inlet tube (31) and cooling water outlet pipe (32), be equipped with cooling valve (33) on cooling water inlet tube (31), flowmeter (4), first temperature measurement part (71), second temperature measurement part (72) and cooling valve (33) all with control module (5) signal connection.
2. The continuous molding die temperature control system according to claim 1, characterized in that: the heat exchange medium box (1) is provided with a heater (11) and a third temperature measurement component (12), and the heater (11) and the third temperature measurement component (12) are in signal connection with the control module (5).
3. The continuous molding die temperature control system according to claim 1, characterized in that: an overflow pipe (13) is further arranged on the heat exchange medium box (1).
4. The continuous molding die temperature control system according to claim 1, characterized in that: the heat exchange medium box (1) is further provided with a liquid level meter (14), and the liquid level meter (14) is in signal connection with the control module (5).
5. The continuous molding die temperature control system according to claim 1, characterized in that: the heat exchange medium adopts cooling water, still be equipped with first filter (34) on cooling water inlet tube (31), the delivery port of first filter (34) pass through water supplementing valve (35) with heat exchange medium case (1) is connected, water supplementing valve (35) with control module (5) electricity is connected.
6. The continuous molding die temperature control system according to claim 5, wherein: the temperature of the cooling water in the cooling water inlet pipe (31) is 5-15 ℃.
7. The continuous molding die temperature control system according to claim 1, characterized in that: and a second filter (73) is arranged between the forming die (6) and the flowmeter (4).
8. The continuous molding die temperature control system according to any one of claims 1 to 7, characterized in that: and an overflow bypass valve (8) is also connected between the heat exchange medium outlet of the heat exchanger (3) and the heat exchange medium tank (1).
9. The continuous molding die temperature control system according to any one of claims 1 to 7, characterized in that: the control module (5) is a PID control module.
10. A control method of the continuous molding die temperature control system according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
a) The third temperature measuring component (12) detects the temperature of the heat exchange medium in the heat exchange medium box (1), and if the temperature is lower than a first set temperature, the heater (11) heats the heat exchange medium until the heat exchange medium reaches the first set temperature; if not, performing the step b);
b) The forming die (6) is started, the heat exchange medium in the heat exchange medium box (1) is conveyed to the forming die (6) by the circulating pump (2), the heat exchange medium flowing out of the forming die (6) flows back to the heat exchange medium box (1) through the flowmeter (4), the control module (5) exchanges heat between cooling water and the heat exchange medium in the flow control heat exchanger (3) according to the difference value between the temperature detected by the first temperature measuring component (71) and the temperature detected by the second temperature measuring component (72) and the difference value between the temperature detected by the flowmeter (4), so that the temperature detected by the second temperature measuring component (72) is at a second set temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210761152.8A CN115339084A (en) | 2022-06-30 | 2022-06-30 | Continuous forming die temperature control system and control method |
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| CN202210761152.8A CN115339084A (en) | 2022-06-30 | 2022-06-30 | Continuous forming die temperature control system and control method |
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| CN202210761152.8A Pending CN115339084A (en) | 2022-06-30 | 2022-06-30 | Continuous forming die temperature control system and control method |
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|---|---|---|---|---|
| US3792144A (en) * | 1966-09-26 | 1974-02-12 | Dow Chemical Co | Packaging process |
| JPH05154899A (en) * | 1991-12-05 | 1993-06-22 | Yoshino Kogyosho Co Ltd | Preform heating device |
| CN1144735A (en) * | 1995-04-05 | 1997-03-12 | 日本合成橡胶株式会社 | Molding apparatus and thermoplastic resin molding method |
| CN106113427A (en) * | 2016-08-20 | 2016-11-16 | 苏州玖圣塑料科技有限公司 | A kind of valve hot runner mould and the method utilizing this Making mold finished product |
| CN205800066U (en) * | 2016-07-18 | 2016-12-14 | 浙江大安模塑科技有限公司 | A kind of plastics injection mould of high efficiency production |
| CN207997564U (en) * | 2018-01-16 | 2018-10-23 | 苏州威士海机械有限公司 | A kind of thermostatic type bottle base heating box |
| CN218701189U (en) * | 2022-06-30 | 2023-03-24 | 楚天科技股份有限公司 | Continuous type forming die temperature control system |
-
2022
- 2022-06-30 CN CN202210761152.8A patent/CN115339084A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3792144A (en) * | 1966-09-26 | 1974-02-12 | Dow Chemical Co | Packaging process |
| JPH05154899A (en) * | 1991-12-05 | 1993-06-22 | Yoshino Kogyosho Co Ltd | Preform heating device |
| CN1144735A (en) * | 1995-04-05 | 1997-03-12 | 日本合成橡胶株式会社 | Molding apparatus and thermoplastic resin molding method |
| CN205800066U (en) * | 2016-07-18 | 2016-12-14 | 浙江大安模塑科技有限公司 | A kind of plastics injection mould of high efficiency production |
| CN106113427A (en) * | 2016-08-20 | 2016-11-16 | 苏州玖圣塑料科技有限公司 | A kind of valve hot runner mould and the method utilizing this Making mold finished product |
| CN207997564U (en) * | 2018-01-16 | 2018-10-23 | 苏州威士海机械有限公司 | A kind of thermostatic type bottle base heating box |
| CN218701189U (en) * | 2022-06-30 | 2023-03-24 | 楚天科技股份有限公司 | Continuous type forming die temperature control system |
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