CN219727114U - Injection mold cooling system - Google Patents
Injection mold cooling system Download PDFInfo
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- CN219727114U CN219727114U CN202321035536.8U CN202321035536U CN219727114U CN 219727114 U CN219727114 U CN 219727114U CN 202321035536 U CN202321035536 U CN 202321035536U CN 219727114 U CN219727114 U CN 219727114U
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- water
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- injection mold
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- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 238000001816 cooling Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000012544 monitoring process Methods 0.000 claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims abstract description 40
- 239000000498 cooling water Substances 0.000 claims abstract description 16
- 239000008400 supply water Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses an injection mold cooling system, which comprises a plurality of water channels arranged in an injection mold; two ends of each water channel are respectively connected with a water inlet and a water outlet at the outer side of the injection mold; the water inlet of each water channel is connected with a water inlet pipe; each water inlet pipe is provided with a regulating valve, each water inlet pipe is connected with a circulating water pipe, and the circulating water pipe is sequentially provided with an inlet temperature monitoring sensor, a booster pump, a water supply water collecting tank, a cooler, a conveying pump and a water outlet water collecting tank; the water outlet of each water channel is connected with a water outlet collecting tank through a water outlet pipe; and each water outlet pipe is respectively provided with an outlet temperature monitoring sensor for monitoring the temperature of outlet cooling water. The cooling system adjusts the flow of cooling water according to the temperature difference of the inlet and the outlet of the water channel, reduces the temperature difference of the water inlet and the water outlet of the water channel, and maintains the heat balance of the die; the system has simple overall design and various control modes, and is easy to popularize and use.
Description
Technical Field
The utility model relates to the technical field of injection mold cooling, in particular to an injection mold cooling system.
Background
In the injection molding process, high-temperature molten plastic is injected into an injection mold through high pressure, and is cooled and solidified, so that a molded product is obtained; therefore, the design of the cooling system of the injection mold is related to the appearance and the internal quality of the plastic part; for example, when the temperature of the mold is too high, the molding shrinkage is large, the deformation rate of the molded part after demolding is large, and flash and sticking are easy to cause; when the temperature of the die is uneven, the temperature difference between the insert and the die core is too large, the plastic part is not shrunk uniformly, so that the plastic part is deformed in a buckling way, and the overall shape and the size of the plastic part are affected; when the temperature of the die is too low, the melt fluidity is poor, the profile of the molded part is unclear, and obvious defects such as silver wires or flow marks can be generated on the surface.
In order to solve the problems, a cooling water channel system is reasonably designed on a die in the prior art to ensure that the plastic part is uniformly contracted and maintain the heat balance of the die; however, for large injection molding parts, the flow of the water channel is long, the water channel forms are various, and the temperature difference between the inlet and the outlet of the cooling water channel is large, so that the temperature distribution of the mold is extremely uneven, and the overall shape and the dimensional accuracy of the molding parts are affected.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides an injection mold cooling system, which changes the flow of each cooling water channel according to the temperature difference of the inlet and the outlet of each cooling water channel on the mold, and controls the temperature difference within a certain range, so that the temperature of the mold is distributed uniformly as much as possible, and the influence on the overall shape and the dimensional accuracy of a plastic part is reduced;
the cooling system includes: a plurality of water channels arranged inside the injection mold; two ends of each water channel are respectively connected with a water inlet and a water outlet at the outer side of the injection mold; the water inlet of each water channel is connected with a water inlet pipe, each water inlet pipe is provided with a regulating valve, each water inlet pipe is connected with a circulating water pipe, and the circulating water pipe is sequentially provided with an inlet temperature monitoring sensor, a booster pump, a water supply water collecting tank, a cooler, a conveying pump and a water outlet water collecting tank; the water outlet of each water channel is connected with a water outlet collecting tank through a water outlet pipe; each water outlet pipe is respectively provided with an outlet temperature monitoring sensor for monitoring the temperature of outlet cooling water; determining the temperature difference by observing the readings of an inlet temperature monitoring sensor (with a digital display function) and an outlet temperature monitoring sensor (with a digital display function), and then regulating the flow through a regulating valve;
preferably, the regulating valve adopts a manual regulating valve to perform manual control;
preferably, in order to facilitate observation when the manual regulating valve is operated, a temperature display panel is arranged close to the manual regulating valve, and the inlet temperature monitoring sensor is connected with a gauge outfit I on the temperature display panel; the outlet temperature monitoring sensors on the water outlet pipes are respectively connected with a meter head II on the temperature display panel.
Preferably, the system further comprises a control panel, and the regulating valve adopts an electric regulating valve; the electric regulating valve, the outlet temperature monitoring sensor and the inlet temperature monitoring sensor are respectively connected with the control panel, so that the remote control requirement is met.
Preferably, the control panel is a manual control panel, and the control panel is provided with a signal generator, a first gauge outfit and a second gauge outfit; the inlet temperature monitoring sensor is connected with the first meter head; the outlet temperature monitoring sensors on the water outlet pipes are respectively connected with a meter head II; each electric regulating valve is correspondingly connected with a signal generator with a regulating knob, and can manually regulate and output a 4-20mA current signal to control the regulating valve; when the staff adjusts the flow of each water channel of the injection mold, only a knob of a signal generator on a temperature adjusting control panel with more display is needed.
Preferably, the control panel is an automatic control panel, a plurality of temperature difference controllers are arranged on the automatic control panel, the inlet temperature monitoring sensor is connected with the temperature difference controllers, each outlet temperature monitoring sensor is respectively connected with one temperature difference controller, and each temperature difference controller is connected with one electric regulating valve; and reading the inlet and the outlet of each water channel through a temperature difference controller, automatically calculating the temperature difference, and dynamically controlling the electric regulating valve according to the current temperature difference.
Preferably, the temperature difference controllers are provided with two analog quantity input ends and one path of 4-20mA output interface, the inlet temperature monitoring sensors are respectively connected with the first input ends of the temperature difference controllers through signal isolators, the outlet temperature monitoring sensors are respectively connected with the second input ends of one temperature difference controller, and the output interface of each temperature difference controller is respectively connected with the control end of one electric regulating valve; the temperature difference control range is set through the temperature difference controller, and the electric regulating valve is automatically controlled to regulate the flow of each water channel, so that the temperature of the die is ensured to be distributed uniformly as much as possible.
Compared with the prior art, the utility model has the following beneficial effects:
according to the cooling system, through various control schemes such as manual control or automatic control, the flow of cooling water is regulated according to the temperature difference of the inlet and the outlet of the water channel, the temperature difference of the water inlet and the water outlet of the water channel is reduced, and the heat balance of the die is maintained; finally, the temperature difference between the temperature of the water inlet and the temperature of the water outlet of each water channel is controlled within a certain range, and the temperature difference between the inlet and the outlet of each water channel is kept as consistent as possible; therefore, the temperature distribution on the die is ensured to be as uniform as possible; the system has simple overall design and various control modes, and is easy to popularize and use.
Drawings
FIG. 1 is a schematic view showing the constitution of a first embodiment of a cooling system for an injection mold according to the present utility model;
FIG. 2 is a schematic view showing the constitution of a second embodiment of a cooling system for an injection mold according to the present utility model;
fig. 3 is a schematic view showing the constitution of a third embodiment of an injection mold cooling system according to the present utility model.
Detailed Description
The drawings in the embodiments of the present utility model will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described:
embodiment one:
as shown in fig. 1, in a first embodiment, the injection mold cooling system includes: a plurality of water channels (waterways) arranged in the injection mold 1, which are indicated by straight lines with arrows in fig. 1, are designed according to the structure and shape of the plastic in actual implementation; two ends of each water channel are respectively connected with a water inlet 2 and a water outlet 3 at the outer side of the injection mold 1; the water inlet 2 of each water channel is connected with a water inlet pipe 4, each water inlet pipe 4 is provided with a manual regulating valve 19 for regulating flow, each water inlet pipe 4 is connected with a circulating water pipe 3, and the circulating water pipe 3 is sequentially provided with an inlet temperature monitoring sensor 16, a booster pump 7, a water supply and collection tank 8, a cooler 9, a delivery pump 10 and a water outlet and collection tank 11; the water outlet 2 of each water channel is connected with a water outlet collecting tank 11 through a water outlet pipe 4; an outlet temperature monitoring sensor 17 for monitoring the temperature of outlet cooling water is respectively arranged on each outlet pipe 4; the inlet temperature monitoring sensor 16 is connected with the first meter head 13 on the temperature display panel 18; the outlet temperature monitoring sensors 17 on the water outlet pipes 4 are respectively connected with a meter head II 14 on the temperature display panel 18; for easy observation when the manual adjustment valve 19 is operated, the temperature display panel 18 is provided close to the manual adjustment valve 19;
the inlet temperature monitoring sensor 16 is used for monitoring the temperature of cooling water of each water channel in the injection molding die 1; the booster pump 7 pressurizes the cooling water entering the die, so that the cooling water is rapidly injected for heat exchange; the cooling water after heat exchange is discharged into a water outlet header tank 11 through a water outlet 2; then the water in the water outlet header tank 11 is conveyed to the cooler 9 through the conveying pump 10; then, the water cooled by the cooler 9 is collected by the water supply header tank 8; finally, the booster pump 7 boosts the pressure and injects the mixture into the mold for recycling; in order to ensure that the temperature of the die is distributed uniformly as much as possible, a worker can adjust the manual adjusting valve 19 on the corresponding water inlet pipe 4 according to the water inlet temperature of the water channel and the water outlet temperature of each water channel displayed on the temperature display panel 18, and change the flow rate of the manual adjusting valve; for example, when the temperature difference between the water inlet temperature and the water outlet temperature of a certain water channel is large, the heat quantity on the path of the water channel is large, the flow is increased through the regulating valve, so that the flow speed of cooling water in the water channel is increased, more low-temperature cooling water enters the water channel to exchange heat to take away the heat quantity, the temperature difference between the water inlet temperature and the water outlet temperature of the water channel is reduced, and the heat balance of the die is maintained; finally, the temperature difference between the water inlet temperature and the water outlet temperature of each water channel is controlled within a certain range (generally 5 ℃); and the temperature difference of each water channel is kept as consistent as possible; therefore, the temperature distribution on the die is ensured to be as uniform as possible;
embodiment two:
as shown in fig. 2, for convenience of remote control, unlike the first embodiment, the manual regulating valve 19 is changed into electric regulating valves 6, and each electric regulating valve 6 is correspondingly connected with a signal generator 15 (4-20 mA current signal) with a regulating knob; the first gauge outfit 13 and the second gauge outfit 14 which display the temperature of the water inlet and the water outlet of each signal generator 15 are arranged on the manual control panel 12; when the staff adjusts the flow of each water channel of the injection mold, only a knob of the signal generator 15 on the manual control panel 12 with more display temperature adjustment is needed.
Embodiment III:
as shown in fig. 3, unlike the second embodiment, the manual control panel 12 with the first gauge outfit 13, the second gauge outfit 14 and the signal generator 15 is replaced by an automatic control panel 20 with a plurality of temperature difference controllers 22 (each water channel corresponds to one temperature difference controller 22), the temperature difference controllers 22 are mature products in the prior art, and are provided with two analog input interfaces and one 4-20mA output interface; the inlet temperature monitoring sensor 16 is respectively connected with a first input end of each temperature difference controller 22 through a signal isolator 21 (one inlet and four outlets), each outlet temperature monitoring sensor 17 is respectively connected with a second input end of one temperature difference controller 22, and an output interface of each temperature difference controller 22 is respectively connected with a control end of one electric regulating valve 6; the temperature difference control range is set through the temperature difference controller 22, and the flow of each water channel is regulated by the automatic control electric regulating valve 6, so that the temperature of the die is ensured to be distributed uniformly as much as possible.
Claims (7)
1. An injection mold cooling system comprising: a plurality of water channels arranged inside the injection mold; two ends of each water channel are respectively connected with a water inlet and a water outlet at the outer side of the injection mold; the water inlet of each water channel is connected with a water inlet pipe; the method is characterized in that: each water inlet pipe is provided with a regulating valve, each water inlet pipe is connected with a circulating water pipe, and the circulating water pipe is sequentially provided with an inlet temperature monitoring sensor, a booster pump, a water supply water collecting tank, a cooler, a conveying pump and a water outlet water collecting tank; the water outlet of each water channel is connected with a water outlet collecting tank through a water outlet pipe; and each water outlet pipe is respectively provided with an outlet temperature monitoring sensor for monitoring the temperature of outlet cooling water.
2. An injection mold cooling system as claimed in claim 1, wherein: the regulating valve adopts a manual regulating valve.
3. An injection mold cooling system as claimed in claim 2, wherein: a temperature display panel is arranged close to the manual regulating valve, and the inlet temperature monitoring sensor is connected with a first gauge head on the temperature display panel; the outlet temperature monitoring sensors on the water outlet pipes are respectively connected with a meter head II on the temperature display panel.
4. An injection mold cooling system as claimed in claim 1, wherein: the system also comprises a control panel, wherein the regulating valve adopts an electric regulating valve; the electric regulating valve, the outlet temperature monitoring sensor and the inlet temperature monitoring sensor are respectively connected with the control panel.
5. An injection mold cooling system as set forth in claim 4 wherein: the control panel is a manual control panel, and a signal generator, a first gauge outfit and a second gauge outfit are arranged on the control panel; the inlet temperature monitoring sensor is connected with the first meter head; the outlet temperature monitoring sensors on the water outlet pipes are respectively connected with a meter head II; each electric regulating valve is correspondingly connected with a signal generator with a regulating knob.
6. An injection mold cooling system as set forth in claim 4 wherein: the control panel is an automatic control panel, a plurality of temperature difference controllers are arranged on the automatic control panel, the inlet temperature monitoring sensor is connected with the temperature difference controllers, each outlet temperature monitoring sensor is connected with one temperature difference controller respectively, and each temperature difference controller is connected with one electric regulating valve.
7. An injection mold cooling system as set forth in claim 6 wherein: the temperature difference controllers are provided with two analog quantity input ends and one path of 4-20mA output interface, the inlet temperature monitoring sensors are respectively connected with the first input ends of the temperature difference controllers through signal isolators, the outlet temperature monitoring sensors are respectively connected with the second input ends of one temperature difference controller, and the output interface of each temperature difference controller is respectively connected with the control end of one electric regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321035536.8U CN219727114U (en) | 2023-05-04 | 2023-05-04 | Injection mold cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321035536.8U CN219727114U (en) | 2023-05-04 | 2023-05-04 | Injection mold cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219727114U true CN219727114U (en) | 2023-09-22 |
Family
ID=88052061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321035536.8U Active CN219727114U (en) | 2023-05-04 | 2023-05-04 | Injection mold cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219727114U (en) |
-
2023
- 2023-05-04 CN CN202321035536.8U patent/CN219727114U/en active Active
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