CN217395569U - Mold structure for heating mold cavity by air - Google Patents
Mold structure for heating mold cavity by air Download PDFInfo
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- CN217395569U CN217395569U CN202220676554.3U CN202220676554U CN217395569U CN 217395569 U CN217395569 U CN 217395569U CN 202220676554 U CN202220676554 U CN 202220676554U CN 217395569 U CN217395569 U CN 217395569U
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- 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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Abstract
The utility model relates to a mould structure for heating a mould cavity by utilizing air, which comprises a mould, wherein the mould is internally provided with the mould cavity; the device also comprises a gas conveying mechanism; an exhaust channel communicated with the die cavity is arranged in the die; when the die cavity is heated, the die cavity and the gas conveying mechanism form a gas circulation passage through the exhaust passage. When the cavity is heated, the gas delivery mechanism, the cavity and the exhaust channel form a gas circulation path, and the gas with controllable temperature flows at high speed in the gas circulation path, so that only the inner surface of the cavity is heated to the required temperature in a very short time (1-5 seconds). After the heating is completed, the gas circulation path is broken, forming a closed mold cavity for the subsequent step of injecting the molten plastic. Fundamentally subverts the traditional method of heating the mold cavity by the mold temperature machine, greatly shortens the injection molding period and saves the consumption of electric energy.
Description
Technical Field
The utility model relates to an injection mold field, more specifically say, relate to an utilize mould structure of air heating die cavity.
Background
In the injection molding process of the injection mold, molten plastic is injected into a mold cavity from a nozzle of an injection molding machine, and the molten plastic is solidified according to the shape of the mold cavity after being cooled to form a required plastic product. In order to efficiently obtain high quality products, the mold cavity needs to be heated before injection molding so that the molten plastic smoothly fills the mold cavity and the product has a high quality surface. After the injection molding is completed, the mold cavity needs to be cooled so that a high-quality plastic product can be obtained. In a conventional injection molding process, a mold temperature machine is generally used to heat and cool a mold cavity. When the mold cavity is heated, the mold temperature controller injects high-temperature heat-conducting medium into the heat medium channel of the mold, and the mold is heated by the heat transferred by the heat medium. The heat transfer medium of the mold temperature controller is generally water or heat transfer oil. And after the injection molding process is finished, the mold cavity is required to be cooled, namely, the mold temperature machine injects the cooled heat medium into a heat medium channel of the mold, so that the mold is cooled and the molten plastic injected into the mold cavity is cooled and then solidified, then the mold is opened, the solidified plastic product is taken out, then the next injection molding cycle is continued, and the mold cavity is heated to the required temperature for the next injection molding.
In the process, the heating and cooling of the mold cavity require the mold temperature machine to supply heat and cool for a certain time, and the length of the heating and cooling time directly affects the manufacturing cost of the plastic product, including the waiting time of the injection molding machine. The mold temperature machine will typically heat and cool the mold for over 50% of the total injection molding process. Before the injection machine performs the next injection molding process, the mold temperature controller heats the mold again. In the conventional injection molding process, this is an inevitable process.
In fact, it is only necessary to heat the inner surface of the mold cavity to a desired temperature during injection molding, rather than heating the mold as a whole. The traditional method for integrally heating and cooling the mould (mould core) not only has long injection molding period, but also causes energy waste.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide an utilize mould structure of air heating die cavity.
The utility model provides a technical scheme that its technical problem adopted is:
the mold structure for heating the mold cavity by using air comprises a mold, wherein the mold is internally provided with the mold cavity; the device also comprises a gas conveying mechanism; an exhaust channel communicated with the die cavity is arranged in the die; when the die cavity is heated, the die cavity and the gas conveying mechanism form a gas circulation passage through the exhaust passage.
Further, the gas delivery mechanism includes an intake passage; the air inlet passage is in communication with the mold cavity when the mold cavity is heated.
Further, the gas conveying mechanism comprises a gas outlet channel, and when the die cavity is heated, the gas outlet channel is communicated with the die cavity through the gas exhaust channel, so that the gas outlet channel, the die cavity and the gas inlet channel form the gas circulation channel.
Further, the gas delivery mechanism comprises a base and a gas inlet needle arranged on the base; the air inlet needle is communicated with the base through the air inlet channel.
Further, the gas delivery mechanism comprises a gas outlet needle arranged on the pedestal; the air outlet needle is communicated with the base through the air outlet channel.
Furthermore, a feed inlet communicated with the die cavity is formed in the die; and when the die cavity is heated, the air inlet needle is propped against the end face of the feed inlet.
Furthermore, a top rod penetrating into the die is arranged on the base.
Furthermore, a fixing plate for driving the air inlet needle, the air outlet needle and the ejector rod to move is arranged on the base; the air inlet needle, the air outlet needle and the ejector rod all penetrate through the fixing plate.
Furthermore, a heat conduction medium channel penetrating through the mold is arranged on the mold.
The beneficial effects of the utility model reside in that: by arranging the gas conveying mechanism, when the die cavity is heated, the gas conveying mechanism and the die cavity form a gas circulation passage through the exhaust passage, so that air with controllable temperature flows at high speed in the gas circulation passage, and only the inner surface of the die cavity is heated in a very short time (1-5 seconds), thereby fundamentally reversing the traditional method for heating the die cavity by using a die temperature machine, greatly shortening the injection molding period and saving the consumption of electric energy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:
fig. 1 is a schematic view of a mold structure for heating a mold cavity by using air according to an embodiment of the present invention;
FIG. 2 is a schematic view illustrating the flow of gas during heating according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a mold structure for heating a mold cavity by using air according to an embodiment of the present invention in an unheated state;
fig. 4 is a schematic structural diagram of a mold according to an embodiment of the present invention.
In the figure, 1, a mold; 2. an air inlet needle; 3. an air outlet needle; 4. a base; 5. a top rod; 6. a fixing plate; 11. a mold cavity; 12. an exhaust passage; 13. a feed inlet; 14. a heat transfer medium channel; 15. fixing a mold; 16. moving the mold; 21. an air intake passage; 31. and an air outlet channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model is shown in fig. 1 to 4, and provides a mold structure for heating a mold cavity by using air, which comprises a mold 1, wherein the mold 1 is provided with a mold cavity 11; the device also comprises a gas conveying mechanism; an exhaust channel 12 communicated with the die cavity 11 is arranged in the die 1; when the cavity 11 is heated, the cavity 11 and the gas delivery mechanism form a gas circulation path through the exhaust passage 12.
The exhaust channels 12 are symmetrically arranged on two sides of the die cavity 11, when the die cavity 11 is heated, the gas conveying mechanism, the die cavity 11 and the exhaust channels 12 form a gas circulation path, gas with controllable temperature flows at high speed in the gas circulation path, and only the inner surface of the die cavity 11 is heated to the required temperature in a very short time (1-5 seconds). After the heating is completed, the gas circulation path is broken, forming a closed mold cavity 11 for the subsequent step of injecting the molten plastic. Fundamentally subverts the traditional method of heating the die cavity 11 by the die temperature machine, greatly shortens the injection molding period and saves the consumption of electric energy.
In a further embodiment, the gas delivery mechanism comprises an inlet channel 21; when the cavity 11 is heated, the intake passage 21 communicates with the cavity 11. The gas delivery mechanism comprises an air outlet channel 31, and when the die cavity 11 is heated, the air outlet channel 31 is communicated with the die cavity 11 through an air exhaust channel 12, so that the air outlet channel 31, the die cavity 11 and the air inlet channel 21 form a gas circulation passage.
In heating the inner surface of the cavity 11, the air inlet passage 21 opens into the interior of the cavity 11 for introducing air of a controllable temperature into the cavity 11. The air outlet passages 31 are located on both sides of the cavity 11 and communicate with the inside of the cavity 11 through the air outlet passages 12. The air inlet channel 21 conveys air with controllable temperature to the die cavity 11 to heat the inner surface of the die cavity 11, the air entering the die cavity 11 enters the air outlet channel 31 through the air outlet channels 12 at two sides of the die cavity 11 to be exhausted, and the air with controllable temperature flows at a high speed in the air circulation channel in such a circulating way, so that the inner surface of the die cavity 11 is heated to the required temperature in a very short time (1-5 seconds), the injection molding period is greatly shortened, and the consumption of electric energy is saved.
In a further embodiment, the gas delivery mechanism comprises a base 4 and an air inlet needle 2 disposed on the base 4; the air inlet needle 2 is communicated with the base 4 through an air inlet channel 21. The gas conveying mechanism comprises a gas outlet needle 3 arranged on a base 4; the air outlet needle 3 is communicated with the base 4 through an air outlet channel 31. A feed port 13 communicated with the die cavity 11 is arranged on the die 1; when the mold cavity 11 is heated, the air inlet needle 2 is pressed against the end face of the feed inlet 13.
The mold 1 is provided with a first through hole for the air inlet needle 2 to advance or retreat and a second through hole for the air outlet needle 3 to advance or retreat. The mold 1 is composed of a fixed mold 15 and a movable mold 16, a first through hole penetrates through the movable mold 16 and is communicated with the mold cavity 11, and a second through hole penetrates through the movable mold 16 and penetrates into a part of the fixed mold 15. The fixed mold 15 and the movable mold 16 combine the exhaust passage 12 and the cavity 11. The feed port 13 is located in the stationary mold 15 and communicates with the mold cavity 11. The intake passage 21 is connected to an external air facility for supplying air of a controllable temperature.
In a further embodiment, the base 4 is provided with ejector pins 5 which penetrate into the mould 1. The ejector rod 5 is used for driving the movable die 16 to move by the injection molding machine after the whole injection molding process is finished, so that the fixed die 15 is separated from the movable die 16, and the ejector rod 5 and the air inlet needle 2 advance together under the driving of the injection molding machine to eject a product in the mold 1.
In a further embodiment, the base 4 is provided with a fixing plate 6 for driving the air inlet needle 2, the air outlet needle 3 and the ejector rod 5 to move; the air inlet needle 2, the air outlet needle 3 and the mandril 5 all penetrate through the fixing plate 6. The fixed plate 6 is connected with an external injection molding machine and is driven by the injection molding machine to drive the air inlet needle 2, the air outlet needle 3 and the ejector rod 5 to advance or retreat together.
In a further embodiment, the mould 1 is provided with heat transfer medium channels 14 extending through the mould 1. After the mold cavity 11 is filled with the molten plastic, the cooled air is passed through the heat transfer medium passage 14 at a high speed to cool the mold 1, and the molten plastic is cooled and solidified to form a desired plastic product. Because the temperature of the mold 1 is far lower than the temperature of the inner surface of the mold cavity 11 required by the mold 1 during injection molding due to the molten plastic, the cooling time of the mold 1 in the application is also greatly lower than that of the mold 1 in the traditional injection molding process, and the injection molding cycle is favorably shortened and the electric energy is saved.
The plastic product of the present application is prepared as follows: the injection molding machine drives the fixing plate 6 to move, and then drives the air inlet needle 2, the air outlet needle 3 and the ejector rod 5 to advance, the air inlet needle 2 and the ejector rod 5 enter the mold cavity 11, the air inlet needle 2 abuts against the end face of the feed inlet 13, at the moment, the air inlet channel 21 is communicated with the mold cavity 11, the air outlet channel 31 is communicated with the exhaust channel 12, air with controllable temperature is introduced into the mold cavity 11 through the air inlet channel 21, the air enters the mold cavity 11 and then enters the air outlet channel 31 through the exhaust channel 12 to be discharged, the circulation is carried out, and the inner surface of the mold cavity 11 is heated to the required temperature within a very short time (1-5 seconds). After heating, the injection molding machine drives the fixing plate 6 to retreat, so that the air inlet needle 2, the air outlet needle 3 and the ejector rod 5 are driven to retreat together, the air inlet needle 2 and the ejector rod 5 leave the mold cavity 11, and the air inlet channel 21 and the air outlet channel 12 are blocked at the moment, so that a closed mold cavity 11 is formed. The nozzle of the injection molding machine fills the molten plastic into the mold cavity 11 through the feed inlet 13 on the fixed mold 15, and then the cooled air passes through the heat transfer medium channel 14 at a high speed, so that the mold 1 is cooled, and the molten plastic is cooled and solidified to form the plastic product required by people. At this time, the injection molding machine opens the mold 1, the fixed mold 15 is separated from the movable mold 16, the injection molding machine drives the air inlet needle 2 and the ejector rod 5 to eject the product in the mold 1, and then the injection molding machine closes the mold 1 for the next cycle.
It will be understood that modifications and variations are possible to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.
Claims (9)
1. A mould structure for heating a mould cavity by using air comprises a mould, wherein the mould is internally provided with the mould cavity; the method is characterized in that: the device also comprises a gas conveying mechanism; an exhaust channel communicated with the die cavity is arranged in the die; when the die cavity is heated, the die cavity and the gas conveying mechanism form a gas circulation passage through the exhaust passage.
2. The mold structure for heating a cavity with air as claimed in claim 1, wherein said gas delivery mechanism includes an air intake passage; the air inlet passage is in communication with the mold cavity when the mold cavity is heated.
3. The mold structure according to claim 2, wherein the gas delivery mechanism comprises a gas outlet channel, and the gas outlet channel is communicated with the mold cavity through the gas exhaust channel when the mold cavity is heated, so that the gas outlet channel, the mold cavity and the gas inlet channel form the gas circulation path.
4. The mold structure for heating a cavity with air according to claim 3, wherein said gas delivery mechanism comprises a base and an air inlet pin provided on said base; the air inlet needle is communicated with the base through the air inlet channel.
5. The mold structure for heating the cavity with air as claimed in claim 4, wherein said gas delivery mechanism comprises a gas outlet needle provided on said base; the air outlet needle is communicated with the base through the air outlet channel.
6. The mold structure for heating a cavity with air as claimed in claim 4, wherein the mold is provided with a feed inlet communicating with the cavity; and when the die cavity is heated, the air inlet needle is propped against the end face of the feed inlet.
7. The mold structure for heating a cavity by air as claimed in claim 5, wherein said base is provided with a pin penetrating into said mold.
8. The mold structure for heating a mold cavity by using air as claimed in claim 7, wherein a fixing plate for driving the air inlet pin, the air outlet pin and the ejector pin to move is provided on the base; the air inlet needle, the air outlet needle and the ejector rod all penetrate through the fixing plate.
9. The mold structure for heating a cavity of a mold according to claim 1, wherein the mold is provided with a heat transfer medium passage penetrating the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220676554.3U CN217395569U (en) | 2022-03-25 | 2022-03-25 | Mold structure for heating mold cavity by air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220676554.3U CN217395569U (en) | 2022-03-25 | 2022-03-25 | Mold structure for heating mold cavity by air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217395569U true CN217395569U (en) | 2022-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220676554.3U Active CN217395569U (en) | 2022-03-25 | 2022-03-25 | Mold structure for heating mold cavity by air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217395569U (en) |
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2022
- 2022-03-25 CN CN202220676554.3U patent/CN217395569U/en active Active
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