CN210940342U - Plastic mold capable of being rapidly heated and cooled - Google Patents
Plastic mold capable of being rapidly heated and cooled Download PDFInfo
- Publication number
- CN210940342U CN210940342U CN201920794429.0U CN201920794429U CN210940342U CN 210940342 U CN210940342 U CN 210940342U CN 201920794429 U CN201920794429 U CN 201920794429U CN 210940342 U CN210940342 U CN 210940342U
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- cooling water
- ring sleeve
- channel
- turbulence
- heating oil
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Abstract
The utility model relates to a but rapid heating and refrigerated plastic mold, it can heat plastic mold rapidly in the heating stage, cools off plastic mold rapidly in the cooling stage, shortens the shaping cycle, improves production efficiency. It comprises a mould body; a heating oil channel and a cooling water channel are formed in the die body; a plurality of turbulence rings made of heat conduction materials are arranged in the heating oil channel and the cooling water channel, and each turbulence ring comprises a ring sleeve and a turbulence cone; the outer diameter of the ring sleeve is matched with the heating oil duct or the cooling water channel, and the outer wall of the ring sleeve is tightly attached to the inner wall of the heating oil duct or the cooling water channel; the turbulence cone is conical and is arranged in the middle of the ring sleeve and fixedly connected with the ring sleeve through the rib plate, the cone tip of the turbulence cone is opposite to the flowing direction of hot oil or cooling water, and a flow channel for the hot oil or the cooling water to pass through is formed between the turbulence cone and the ring sleeve.
Description
Technical Field
The utility model relates to a plastic mold technical field especially relates to a but rapid heating and refrigerated plastic mold.
Background
The molding cycle of the injection molding plastic mold during working generally comprises the stages of mold closing, glue injection, pressure maintaining, cooling, mold opening, product taking and the like, wherein the mold is heated after mold closing to rapidly heat the mold, and the mold is also kept warm in the glue injection and pressure maintaining stages so as to increase the fluidity of molten glue, so that the molten glue can fill all corners of a mold cavity of the mold, ensure the product quality, shorten the molding cycle and improve the production rate; after the pressure maintaining stage is completed, the molding cycle needs to be shortened by rapid cooling, so that the productivity is improved, the product defects can be inhibited, the generation of defective products is reduced, and the appearance quality of the product is improved. The common heating method of the plastic mold is to arrange a heating oil channel in the mold and transfer heat to the plastic mold by using circulating high-temperature mineral oil heated by an oil temperature machine. A common cooling method for plastic molds is to provide a cooling water channel in the mold and take away the heat of the mold by using cooling water that flows circularly.
As shown in fig. 6, in the heating oil gallery, heat is transferred to the inner wall of the heating oil gallery mainly through the part of mineral oil (point a in fig. 6) in direct contact with the inner wall of the heating oil gallery and then transferred to the mold, and since the thermal conductivity of the mineral oil is quite low and is only 0.12W/mK (the thermal conductivity of copper is 401W/mK and the thermal conductivity of iron is 80W/mK), the part of mineral oil in the middle of the cross section of the heating oil gallery (point B in fig. 6) is difficult to transfer heat to the mineral oil in direct contact with the inner wall of the heating oil gallery through a heat transfer mode, and heat transfer can be performed only through convection and radiation modes, so that the part of mineral oil in the middle of the heating oil gallery is low in heat transfer efficiency and affects the heating effect.
Similarly, in the cooling water channel, because the heat conductivity coefficient of water is also quite low and is only 0.54W/mK, the heat of the die can not be rapidly transferred to the cooling water in the middle of the cross section of the cooling water channel, and the cooling effect is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a plastic mould which can be heated and cooled rapidly, the heat of hot oil in a heating oil channel can be rapidly transferred to the plastic mould in the heating stage, and the plastic mould is rapidly heated; can transmit the cooling water in the cooling water course with plastic mold's heat rapidly in the cooling stage, cool off plastic mold fast to shorten the shaping cycle, improve production efficiency.
The utility model discloses a realize through following technical scheme:
a plastic mold capable of being rapidly heated and cooled comprises a mold body; a heating oil channel and a cooling water channel are formed in the die body; a plurality of turbulence rings made of heat conduction materials are arranged in the heating oil channel and the cooling water channel, and each turbulence ring comprises a ring sleeve and a turbulence cone; the outer diameter of the ring sleeve is matched with the heating oil duct or the cooling water channel, and the outer wall of the ring sleeve is tightly attached to the inner wall of the heating oil duct or the cooling water channel; the turbulence cone is conical and is arranged in the middle of the ring sleeve and fixedly connected with the ring sleeve through the rib plate, the cone tip of the turbulence cone is opposite to the flowing direction of hot oil or cooling water, and a flow channel for the hot oil or the cooling water to pass through is formed between the turbulence cone and the ring sleeve.
Preferably, the ring sleeve is provided with an inclined surface inclined from the inner wall to the outer wall of the ring sleeve on the upstream end face of the hot oil or the cooling water, and the inclined surface guides the hot oil or the cooling water to the center of the ring sleeve to flow. The flow resistance of the hot oil or the cooling water can be reduced.
Preferably, the turbulent ring is arranged in the heating oil channel and the cooling water channel at intervals. By arranging the interference flow rings at intervals, hot oil in the middle of the heating oil duct can be diffused to the inner wall of the heating oil duct, and the heat is transferred to the plastic mold; the cooling water in the middle of the cooling water channel is diffused to the inner wall of the cooling water channel, so that the plastic mold transfers heat to the cooling water.
Preferably, the turbulent ring is made of metallic copper. The thermal conductivity coefficient of copper is 401W/mK, and the copper is a good thermal conductive material. The heat exchange between the hot oil or cooling water flowing through the turbulent ring and the plastic mold can be rapidly carried out.
Preferably, pipeline joints are arranged at two ends of the heating oil channel and the cooling water channel. Facilitating connection with external pipes.
The utility model has the advantages that:
1. the plastic mold has the advantages that the turbulence rings made of metal copper are arranged in the heating oil duct, so that hot oil close to the axis of the heating oil duct can be diffused outwards to the inner wall close to the heating oil duct, heat is transferred to the plastic mold through the inner wall of the heating oil duct, the temperature of the plastic mold is rapidly increased, the molding period is shortened, and the production efficiency is improved.
2. The adoption sets up a plurality of vortex rings of being made by metallic copper in the cooling water course, enables to be close to near the cooling water course axis near the cooling water course internal wall to the outside diffusion, makes plastic mold pass through the cooling water course internal wall with the heat and transmits the cooling water for, makes plastic mold cool off rapidly to shorten the shaping cycle, improve production efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an axial sectional view of the heating oil duct and the cooling water duct according to the present invention.
Fig. 3 is a radial cross-sectional view of the heating oil duct and the cooling water duct according to the present invention.
Fig. 4 is a cross-sectional view of the spoiler ring according to the present invention.
Fig. 5 is a right side view of fig. 4.
Fig. 6 is a schematic diagram of heat transfer of a conventional heating oil passage and cooling water passage.
In the figure: the mould comprises a mould body 1, a heating oil duct 2, a cooling water channel 3, a pipeline joint 4, a turbulence ring 5, a ring sleeve 6, a turbulence cone 7, an inclined plane 8, a rib plate 9 and a flow channel 10.
Detailed Description
As shown in fig. 1-5, an embodiment of the present invention is a plastic mold capable of being heated and cooled rapidly, including a mold body 1, a heating oil duct 2 and a cooling water duct 3 are formed in the mold body 1, and two ends of the heating oil duct 2 and the cooling water duct 3 are respectively provided with a pipe joint 4; a plurality of turbulence rings 5 made of heat conduction materials are arranged in the heating oil channel 2 and the cooling water channel 3, and each turbulence ring 5 comprises a ring sleeve 6 and a turbulence cone 7; the outer diameter of the ring sleeve 6 is matched with the heating oil duct 2 or the cooling water duct 3, the outer wall of the ring sleeve is tightly attached to the inner wall of the heating oil duct 2 or the cooling water duct 3, the inclined surface 8 which inclines from the inner wall to the outer wall of the ring sleeve 6 is arranged on the upstream end surface of the ring sleeve 6 positioned on hot oil or cooling water, and the inclined surface 8 is used for guiding the hot oil or cooling water to the center of the ring sleeve 6 to flow, so that the resistance of the hot oil or cooling water flowing through the turbulent ring 5 can be; the turbulence cone 7 is conical and is arranged in the middle of the ring sleeve 6 and fixedly connected with the ring sleeve 6 through a rib plate 9, the cone tip of the turbulence cone 7 is reverse to the flowing direction of hot oil or cooling water, and a flow channel 10 for the hot oil or the cooling water to pass through is formed between the turbulence cone 7 and the ring sleeve 6.
In this embodiment, the turbulence rings 5 are disposed at intervals in the heating oil gallery 2 and the cooling water gallery 3. Through the interval setting if disturb the flowing ring 5, can make the hot oil in the middle of whole heating oil duct 2 to the diffusion of 2 inner walls of heating oil duct, give mould body 1 with heat transfer, make the cooling water in the middle of whole cooling water course 3 to the diffusion of 3 inner walls of cooling water course, make mould body 1 with heat transfer for the cooling water.
In this embodiment, the turbulent ring 5 is made of copper. The thermal conductivity coefficient of copper is 401W/mK, the copper is good thermal conductive material, and when hot oil or cooling water flows through the flow disturbing ring 5, the hot oil or cooling water can rapidly carry out heat exchange with the die body 1 through the flow disturbing ring 5.
The working principle is as follows: in the heating stage, the external pipeline leads hot oil into the heating oil duct 2 through the pipeline joint 4, the hot oil close to the inner wall of the heating oil duct 2 transfers heat to the die body 1 through the inner wall of the heating oil duct 2, the temperature of the hot oil close to the inner wall of the heating oil duct 2 is rapidly reduced, but because the heat conductivity of the oil is very low (the heat conductivity coefficient of the oil is 0.12W/mK), the hot oil in the middle of the heating oil duct 2 (close to the axis) still keeps higher temperature, the heat is difficult to transfer to the die body 1, when the hot oil flows through the turbulence ring 5, the hot oil is diffused outwards by the turbulence cone 7 to be close to the inner wall of the heating oil duct 2, the heat can be transferred to the die body 1 through the inner wall of the heating oil duct 2, the original hot oil with the reduced temperature close to the inner wall of the heating oil duct 2 is mixed with the high-temperature hot oil to flow forwards, and the, the heat exchange speed between the hot oil and the die body 1 is accelerated, so that the temperature of the die body 1 is rapidly increased.
Similarly, in the cooling stage, the external pipeline leads cooling water to the heating oil channel 2 through the pipeline joint 4, the mold body 1 rapidly transfers heat to the cooling water close to the inner wall of the cooling water channel 3, the temperature of the cooling water close to the inner wall of the cooling water channel 3 is rapidly increased, however, because the heat conductivity of the water is very low (the heat conductivity coefficient of the water is 0.54W/mK), the cooling water in the middle of the cooling water channel 3 (namely close to the axis) keeps low temperature, the mold body 1 is difficult to transfer heat to the cooling water, when the cooling water flows through the turbulent ring 5, the cooling water is outwards diffused to the inner wall close to the cooling water channel 3 by the cone 7, so that the mold body 1 can transfer heat to the cooling water, and the cooling water with the increased temperature close to the inner wall of the cooling water channel 3 originally is mixed with the low-temperature cooling water to flow forwards, therefore, the temperature of the radial cooling water in the whole cooling water channel 3 tends to be consistent, the heat exchange speed of the cooling water and the die body 1 is accelerated, and the die body 1 is rapidly cooled.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention.
Claims (5)
1. A plastic mold capable of being rapidly heated and cooled comprises a mold body; a heating oil channel and a cooling water channel are formed in the die body; the method is characterized in that: a plurality of turbulence rings made of heat conduction materials are arranged in the heating oil channel and the cooling water channel, and each turbulence ring comprises a ring sleeve and a turbulence cone; the outer diameter of the ring sleeve is matched with the heating oil duct or the cooling water channel, and the outer wall of the ring sleeve is tightly attached to the inner wall of the heating oil duct or the cooling water channel; the turbulence cone is conical and is arranged in the middle of the ring sleeve and fixedly connected with the ring sleeve through the rib plate, the cone tip of the turbulence cone is opposite to the flowing direction of hot oil or cooling water, and a flow channel for the hot oil or the cooling water to pass through is formed between the turbulence cone and the ring sleeve.
2. A rapidly heatable and coolable plastic moulding tool as claimed in claim 1, wherein: the ring sleeve is provided with an inclined surface which is inclined from the inner wall to the outer wall of the ring sleeve on the upstream end surface of the hot oil or the cooling water, and the inclined surface guides the hot oil or the cooling water to the center of the ring sleeve to flow.
3. A rapidly heatable and coolable plastic mould as claimed in claim 1 or 2, characterized in that: the flow disturbing rings are arranged in the heating oil channel and the cooling water channel at intervals.
4. A rapidly heatable and coolable plastic mould as claimed in claim 1 or 2, characterized in that: the turbulent ring is made of metal copper.
5. A rapidly heatable and coolable plastic moulding tool as claimed in claim 1, wherein: and pipeline joints are arranged at two ends of the heating oil channel and the cooling water channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920794429.0U CN210940342U (en) | 2019-05-30 | 2019-05-30 | Plastic mold capable of being rapidly heated and cooled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920794429.0U CN210940342U (en) | 2019-05-30 | 2019-05-30 | Plastic mold capable of being rapidly heated and cooled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210940342U true CN210940342U (en) | 2020-07-07 |
Family
ID=71392094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920794429.0U Expired - Fee Related CN210940342U (en) | 2019-05-30 | 2019-05-30 | Plastic mold capable of being rapidly heated and cooled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210940342U (en) |
-
2019
- 2019-05-30 CN CN201920794429.0U patent/CN210940342U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 |
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| CF01 | Termination of patent right due to non-payment of annual fee |