CN212554846U - Highlight injection molding and sharp hot die utensil of rapid cooling with laser texture - Google Patents
Highlight injection molding and sharp hot die utensil of rapid cooling with laser texture Download PDFInfo
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Abstract
The utility model belongs to automobile parts manufacturing process field, concretely relates to highlight injection molding and sharp quenching and sharp heating mould with laser texture. According to the utility model discloses a laser texture highlight injection molding has layered structure, include: the substrate layer is prepared by adopting a rapid cooling and rapid heating process and is formed into a highlight injection molding part with a nano or femtosecond laser texture structure; the transparent coating covers the substrate layer and is formed by reacting and curing the two-component coating, so that the highlight injection molding piece has the scratch resistance, and the transparent coating also enables the highlight injection molding piece with the nano or femtosecond laser texture structure to have different three-dimensional effects and/or color effects by visual observation from different angles. The laser texture highlight injection molding piece has the advantages of obvious cost advantage, beautiful surface coating, ideal hardness and better scratch resistance; the nano or femtosecond laser texture structure is combined with the transparent coating, so that the highlight injection molding piece has a three-dimensional decoration effect integrally, and the product has more advantages and competitiveness.
Description
Technical Field
The utility model belongs to automobile parts manufacturing process field, concretely relates to highlight injection molding and rapid cooling and heating mould with laser texture.
Background
In recent years, the automobile industry has been rapidly developed, especially the yield and social preservation of cars have kept high acceleration, automobile plastics have irreplaceable effects in the aspects of beauty, safety, light weight and the like, and meanwhile, the new automobile technology is developing towards more environmental protection, safety, comfort and individuation.
At present, the automobile decoration part mostly adopts an injection molding spraying process, the whole process at least comprises an injection molding link, a spraying link and a final assembly link, and each single link comprises a plurality of specific small links. Therefore, the traditional injection molding and spraying process has complicated steps and complex whole flow, so that the process has high energy consumption and high cost of manpower and material resources, and the spraying process pollutes the environment and is not environment-friendly enough. On the other hand, the automobile decoration of above-mentioned traditional injection molding spraying technology production, the process is loaded down with trivial details, and the defective rate is higher, also exists not enoughly on the product surface quality, for example: the parts are easy to have quality defects of orange peel, sagging and the like, the surface gloss of the product is not ideal, the structure and the style of the product are single, the depth three-dimensional sense of the parts is poor, and the parts are not aesthetic and fashionable.
In view of the above insufficiency of the prior art, the object of the utility model is to provide a highlight injection molding and corresponding rapid cooling and heating mould with laser texture. The utility model discloses a highlight injection molding with laser texture not only has the third dimension micro texture of high gloss, multi-angle, still has the product surface hardness of ideal, the advantage in aspects such as better scratch resistance and mar self-healing nature simultaneously. The utility model discloses a highlight injection molding surface with laser texture forms the effective combination of multiple structure, and the kind is abundant, and the aesthetic feeling is fashionable.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above technical purpose, according to the utility model discloses an aspect proposes a highlight injection molding with laser texture, the highlight injection molding has a layered structure, the layered structure includes: the substrate layer is prepared by adopting a rapid cooling and rapid heating process and is formed into a highlight injection molding piece with a nano laser texture structure or a femtosecond laser texture structure; the transparent coating covers the substrate layer and is formed by reacting and curing a two-component coating so as to improve the surface scratch resistance of the highlight injection molding piece.
According to the utility model discloses a highlight injection molding with laser texture, preferably, the clear coat makes to possess nanometer or femto second laser texture highlight injection molding from different angles the visual different stereoeffect and/or the colour effect that has.
According to the utility model discloses a highlight injection molding with laser texture, preferably, have nanometer or femto second laser texture the substrate layer with the clear coat is with the help of revolving stage one shot forming.
According to the utility model discloses a highlight injection molding with laser texture, preferably, the transparent coating's of injection molding hardness reaches shore D70 above at least.
According to the utility model discloses a highlight injection molding with laser texture, preferably, the clear coat of injection molding has the self-healing characteristic, and produced mar can disappear gradually through the processing of setting for the temperature environment.
According to the utility model discloses a second aspect provides a rapid cooling and rapid heating injection mold, and it is used for producing the highlight injection molding that has the laser texture, rapid cooling and rapid heating injection mold is including being used for forming the first die cavity of substrate layer with be used for forming the second die cavity of clear coat, a serial communication port, the internal surface of first die cavity is preprocessed and is had nanometer laser texture or femto second laser texture, so that highlight injection molding has nanometer laser texture or femto second laser texture.
According to the utility model discloses a sharp hot injection mold of rapid cooling, preferably, the mould temperature of first die cavity: before mold closing, rapidly heating to a temperature above the glass transition temperature of the material, and performing mold closing injection after the temperature reaches a first set temperature value; after the mold closing and injection are finished, quickly reducing the temperature to the ejection temperature, and ejecting the workpiece after the temperature reaches a second set temperature value; and, the rapid cooling and rapid heating injection mold further comprises a rapid mold temperature changing device configured to cause the mold temperature to change rapidly, the rapid mold temperature changing device comprising one or more of the following devices: the device comprises a water vapor auxiliary variable-mold temperature device, a water auxiliary variable-mold temperature device, an oil auxiliary variable-mold temperature device and an electromagnetic induction variable-mold temperature device.
According to the utility model discloses a rapid cooling and heating injection mold, preferably, the water route design of first die cavity is for pressing close to the retinue pipeline of die cavity, and water route diameter, water pipe interval and water route are for making to the surface distance design of product the surface temperature of first die cavity has the uniformity.
According to the utility model discloses a sharp hot injection mold of quenching, preferably, the mold core of first die cavity adopts thermal-insulated design to prevent that the heat scatters and disappears and promote heating efficiency.
According to the utility model discloses a rapid cooling and heating injection mold, preferably, first die cavity is provided with temperature sensor to realize passing through between mould end, the mould temperature machine and the injection molding machine temperature sensor's feedback forms rapid cooling and heating technology's closed-loop control.
Advantageous technical effects
To sum up, the utility model discloses a highlight injection molding product compares in prior art, has the advantage in several aspects as follows at least:
(1) the injection molding part formed by the rapid cooling and rapid heating injection molding process has the surface highlight characteristic, and the transparent coating formed by the coating process has ideal surface hardness, so that the surface scratch resistance of the injection molding part product is improved, and the surface also has certain self-healing property for the generated micro scratches;
(2) the transparent coating is combined with the laser texture, so that the whole injection molding part has a three-dimensional depth effect, and the product is combined with functional aesthetics, so that the aesthetic texture and fashion of the product are improved; furthermore, if femtosecond laser textures are adopted, the product has more layering and better three-dimensional effect, the three-dimensional effect viewed at different angles is different, the generated color and ripple effect are also different, and dynamic and fashionable visual advantages are brought to the product;
(3) the laser texture in the mould or the specific pattern of the femtosecond laser texture and the like can be customized, so that the texture on the product is more flexibly selected, various requirements can be met, the application is wider, and the whole product has more market competitiveness.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
It is to be understood that the drawings in the following description are directed to only some embodiments of the invention and are not intended as limitations of the invention.
In the drawings:
fig. 1 shows a schematic representation of the steps in the reaction injection molding process of the present invention.
Fig. 2 shows a schematic diagram of a temperature curve of rapid cooling and rapid heating injection molding of the present invention.
Fig. 3 shows a schematic diagram of the mold temperature control of the rapid cooling and rapid heating injection molding process of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs.
Reaction injection molding process
Fig. 1 shows a schematic view of the steps in a reaction injection molding process according to the present invention. In the reaction injection molding process, the spray process is integrated into the injection molding process. In particular, the glazed parts can be ejected from the mold after a period of time of flood curing of the thermoplastic substrate in a closed injection mold using a two-component PUR/PUA coating or coating material. Throughout the process, the parts are actually in the same mold. Therefore, the reaction injection molding process according to the present invention can significantly provide very high part quality and dimensional stability.
In the injection molding process according to the present invention, PUR employs a & B bi-component. In the case of a product of the applicant, wherein the a component may be a polyol/polyamine compound, see in particular table 1 below; the B component can be an isocyanate compound, as listed in Table 2 below. The two-component material can also be polyurea or polyurethane material according to the product requirement.
Table 1 component A in PUR
| Chemical name | CAS number | By weight% |
| 1, 4-butanediol | 110-63-4 | 12.5-20 |
| Dimethyl bis [ (neodecanoyl) oxy)]Dimethyl tin | 68928-76-7 | <0.5 |
| Phosphorous acid phenyl diisodecyl ester | 25550-98-5 | <0.5 |
Table 2 component B in PUR
| Chemical name | CAS number | By weight% |
| Homopolymers of 1, 6-diisocyanatohexane | 28182-81-2 | 50-100 |
| 1, 6-hexamethylene diisocyanate | 822-06-0 | <0.5 |
The utility model discloses an equipment combination of reaction injection moulding technology, especially mixing head can realize accurate coating volume in every circulation.
Referring to fig. 1, the reaction injection molding process according to the present invention mainly includes the following steps:
(1) injection molding a thermoplastic substrate;
(2) maintaining the pressure, and cooling the thermoplastic plastics for a time;
(3) opening the mold, rotating the turntable by about 180 degrees, and closing the mold;
(4) PUR/PUA injection, with the next cycle of thermoplastic material;
(5) PUA/PUR reaction time, thermoplastic pressure holding and cooling time;
(6) and opening the mold and demolding.
The reaction injection molding process shown in fig. 1 according to the present invention is effectively improved in the above aspects, compared to the conventional plastic spraying process. As is known, the conventional plastic spraying process at least includes three processes, i.e., an injection molding process, a coating process, and a final assembly process, and each process at least includes several sub-steps. In contrast, the reaction injection molding process according to the present invention is less in waste material, and low in energy consumption, saves manpower, is an environment-friendly process route.
According to the utility model discloses an above-mentioned reaction injection moulding process can obtain the optimization coating that has different characteristics. In particular, the advantages are at least as follows:
100% free of any solvent;
no external release agent is required;
a high degree of scratch resistance;
freely definable surface hardness;
surfaces that can self-heal;
extremely broad color range: clear, color or metallic effects;
high UV resistance and weathering resistance;
OEM specific requirements can be achieved.
According to the utility model discloses a quick in-mould emulation surface decoration technology, in reaction injection moulding technology, still can define the coating thickness, for example 0.4mm ~ 0.8 mm. At the same time, the above process also provides more flexibility in the design of the coating, such as a clear coating, a colored coating, or an effect color coating, etc.
Furthermore, according to the utility model discloses a quick in-mould emulation surface decoration technology's coating has self-healing nature, when slight or little mar appears, possesses the selfreparing function under the temperature environment of certain settlement promptly, and the mar can disappear gradually.
One specific example of the above reaction injection molding process is as follows:
item name: research on intelligent self-repairing technology of automobile decorative plate
Part name: drinking cup rack panel
Raw materials: PUR for covering PC/ABS surface of substrate
Product size: 109*156*16.5
PC/ABS weight: 43g
PC/ABS color: black color
PUR thickness: 0.4mm
Weight of PUR: 10 g
PUR hardness: shore D70
PUR color: piano black
The surfaces obtained were subjected to adhesion tests: class 0 according to GB/T9286-1998; and (3) carrying out scratch test: using an ERICHSEN scratch tester with a tip diameter of 0.75mm, a pressure of 20N, a surface contacted with hot air at 60 ℃ immediately disappeared scratches.
Rapid cooling and heating injection moulding
Fig. 2 shows a temperature control curve of a rapid cooling and rapid heating injection molding process according to the present invention.
The rapid cooling and heating injection molding process of the utility model is a method for carrying out thermal cycle on the surface temperature of a mold in an injection molding period. Before injection, the mold surface temperature is rapidly raised to above the glass transition temperature (Tg) of the material, and injection molding is performed. And after the injection molding is finished, quickly reducing the mold temperature to the ejection temperature. In the forming process, a variable mold temperature forming process is adopted. According to the utility model discloses a technology adopts high mould temperature, has improved the mobility of raw materials in the mould, can effectively replicate mould surface state, has eliminated some defects that conventional injection moulding product surface appears simultaneously, like weld mark, glass fibre expose, orange peel, gas line etc.. Therefore, the surface gloss of the molded product is good, so the method is also called a high-gloss injection molding process.
Referring to fig. 2, the process route of the rapid cooling and rapid heating injection molding according to the present invention is as follows:
opening the die and heating;
secondly, after the first preset temperature is reached, die assembly and injection molding are carried out;
cooling;
and fourthly, demolding and taking the workpiece after the second preset temperature is reached.
According to the utility model discloses a rapid cooling and heating technology compares in traditional injection molding process, has the following performance aspect advantage at least:
solving the problem of fiber floating on the surface of the traditional injection molding product;
eliminating the defects of welding marks, stress marks and the like on the surface of a product in the traditional process;
high mold temperature, improved material flowability, effective replication of mold surface morphology;
enhance the surface gloss of the product;
the product can realize effective combination of highlight injection molding and mold laser texture;
the product can realize effective combination of high light and low light;
for high-brightness black products, injection molding is completed in one step, and a subsequent paint spraying process can be eliminated.
The quenching and rapid heating process of the utility model adopts the following variable mold temperature medium.
(1) Steam-assisted mold temperature changing technology
The quenching and quick heating process can adopt a steam heating mode. The heating conductivity of the steam is higher, and the temperature rising speed is faster than that of hot water.
(2) Water-assisted temperature changing technology
The quenching and quick heating process can adopt a water-assisted temperature changing technology. Compared with steam type and electromagnetic induction heating type, the device has the advantages of low equipment investment cost, high temperature control precision, combination with a standard mold temperature controller and high equipment universality.
(3) Oil-assisted temperature changing technology
The quenching and quick heating process can adopt an oil-assisted temperature changing technology. The control system is the same as the water-assisted variable mold temperature, and the equipment investment cost is lower. The cooling adopts water medium, and because the heating medium is different from the cooling medium, the die is provided with two sets of circulating paths for heating and cooling circulation.
(4) Electromagnetic induction strain mold temperature auxiliary forming
The rapid cooling and heating process can adopt an electromagnetic induction variable mold temperature auxiliary forming technology. The surface of the die is heated by high-frequency induction, the heating power is high, the temperature is quickly raised, and the surface temperature of the die can be raised to more than 200 ℃ in a short time.
In the aspect of the equipment involved in the rapid cooling and rapid heating process according to the utility model, the equipment can comprise a rapid cooling and rapid heating mould, a rapid cooling and rapid heating highlight traceless machine, an injection molding machine, a soft water system, a cooling water tower, an air compressor unit and the like. Among them, for example, a highlight non-marking machine device for a decorative strip includes an ESR control valve (having two small water tanks inside to control the inlet and outlet of water), a mixing bed, a constant delivery pump, and the like.
As an exemplary embodiment, the highlight traceless machine apparatus for the trim strip has the following operating characteristics:
(1) the fully closed system adopts an electric heating mode and liquid water as a working medium. Heating water to working temperature, pumping the water to the mold end by a water pump, and continuously controlling the water temperature by a temperature sensor.
(2) The medium design avoids the consumption of high energy source for converting the phase state of water into steam, and also avoids the extra time of drying the steam by using compressed air in the steam-cold water type variable-mould-temperature process.
(3) The high temperature causes the water quality change, the conductivity rises, the incrustation scale and the scale easily appear, the equipment contains a set of water treatment equipment (mixing bed, constant delivery pump), carries out water quality treatment before the system mends water.
In the aspect of manufacturing the rapid cooling and heating die, the utility model has the following characteristics.
(1) Selection of steel
According to the utility model discloses a rapid cooling and rapid heating injection molding process (RHCM), need be in cold and hot circulation because of the mould constantly, produce stress fatigue easily, consequently will consider high temperature resistant and hardness requirement to the selection of mould steel. Meanwhile, high-gloss products require high-quality steel with good polishing property, high purity, high mirror surface and the like on the surface of the die.
(2) Waterway design
The rapid cooling and heating process needs rapid temperature rise and temperature reduction processes of the mold, the consistency of the surface temperature of the mold cavity directly affects the product quality, and if the water channel design is unreasonable, the defects of product deformation, color difference, local scorching and the like are often caused. Therefore, according to the utility model discloses a mould water route, need consider following factor when the design:
A) designing a conformal pipeline close to the cavity;
B) diameter of the waterway;
C) the distance between the water pipes;
D) distance from the waterway to the surface of the product;
E) special sealing washer and water route connect.
(3) Mold insulation design
The RHCM process has higher mold temperature, and needs to make heat insulation design on the mold core part to prevent heat loss and improve heating efficiency.
(4) Mold gate design
The design of the mold gate needs to consider reducing the welding line as much as possible, reducing the shearing generated during the injection molding of the material, and reducing the generation of orientation and flow marks on the surface of the material.
(5) Mold surface temperature detection
The mold temperature control of the rapid cooling and rapid heating injection molding process according to the utility model is shown in figure 3.
The rapid cooling and rapid heating process adopts a cold and hot water circulation mode to carry out variable mold temperature control on the surface temperature of the mold. The mold end is provided with a temperature sensor, so that closed-loop control among the mold end, the highlight traceless machine and the injection molding machine can be realized. This control reduces human intervention and setup. The whole rapid cooling and heating process can be effectively controlled by the real-time temperature in the die derived by the temperature sensor, and the smooth realization of production is effectively ensured.
Aspects of raw materials
Through the research of the applicant, in order to realize the spraying-free high-gloss injection molding, a high-gloss plastic material is selected firstly.
Requirements for such materials include:
(1) the material has good fluidity so as to better reproduce the surface of the mold;
(2) the material has scratch resistance and good hardness;
(3) the material has good thermal stability and is not easy to generate volatile matters. The heat resistance is improved, the volatilization of volatile matters is reduced, and the corrosion of a mold is prevented;
(4) the glossiness of the material is good;
the existing highlight spraying-free materials are mainly as follows: high light grade ABS, high light grade PA, PC, PMMA, PC/ABS, PMMA/ABS, etc. For nylon materials, the material is crystalline and has moisture absorption property, so that the product is easy to deform after molding, and only small-size parts can be produced.
Comparing the rapid cooling and heating with the traditional spraying process
Compared with the traditional plastic spraying, the quenching and rapid heating process of the utility model has the comparison details in all aspects listed in the following table 3.
TABLE 3 comparison of conventional Process with Rapid Cooling and heating Process
Laser texturing process
According to the utility model discloses, laser texture technique in the mould, sharp hot mould's of quenching promptly die cavity is formed with nanometer laser texture or femto second laser texture for at the in-process of moulding plastics of thermoplasticity substrate, can form microcosmic nanometer or femto second laser texture structure on the substrate. Therefore, on parts obtained by rapid cooling and rapid heating injection molding, the parts have the effect of high surface gloss, and also have a nano or femtosecond laser texture structure, and have different three-dimensional effects and/or color effects visually from different angles, so that injection molded parts are attractive and fashionable. Meanwhile, the nano or femtosecond laser texture in the die can be customized, and the product has high flexibility and can meet different customer requirements.
According to the utility model discloses, laser 3D texture is in the mould on the processing mode, mainly includes following flow:
(1) and providing a universal 3D drawing file of the die, which completely conforms to the size of the workpiece.
(2) And designing the required texture.
(3) And rendering the texture to the surface to be processed through software processing.
(4) The laser processing program is generated by software calculation.
(5) And (4) importing the processing program into a machine, adjusting and setting various parameters, and then directly performing laser burning.
(6) After laser processing is finished, the die can be directly produced.
According to the utility model discloses, in the processing principle of laser 3D texture to the mode processing of layering, degree of depth and number of piles form the texture precision. The more levels at the same depth, the higher the machining precision.
Except the nanometer laser texture of above-mentioned introduction, the utility model discloses an in-mould laser texture also can adopt femto second laser technology processing, and the femto second laser texture that forms more has the stereovision, and the stereoeffect is better. Particularly, the utility model discloses a femto second laser texture is different at the visual stereoeffect of different angles, and because the produced color of principle such as light diffraction and ripple effect are also different, has brought dynamic, fashion's visual advantage for the product.
Specifically, the femtosecond laser texture in the mold can be processed by combining an ultrashort pulse femtosecond laser source and an ytterbium-doped fiber laser, so that ideal processing quality can be obtained. The configuration has almost no heat affected zone, no fine cracks, no re-melting layer, no burr, and no subsequent processing steps to obtain clean, clear, high-sharpness and high-stereoscopic texture effect.
To sum up, the utility model discloses a quick emulation surface decoration technology in mould has following technical key point to carry out organic combination with each key point: firstly, a rapid cooling and rapid heating injection molding process; ② laser texture technique in mould; and thirdly, a coating process of a rapid turntable.
Based on as above technical key point, the utility model discloses a quick mould internal simulation surface decoration technology compares in prior art, can omit a great deal of steps that are essential originally for whole process flow is shorter, required space is littleer, the human cost is lower, the technology energy consumption is lower, and the course of technology is also more environmental protection, etc..
Compared with the prior art, the injection molding product produced by the process has the following advantages:
(1) the injection molding part formed by the rapid cooling and rapid heating injection molding process has the surface highlight characteristic, and the transparent coating formed by the coating process has ideal surface hardness, so that the surface scratch resistance of the injection molding part product is improved, and the surface also has certain self-healing property for the generated micro scratches;
(2) the transparent coating is combined with the laser texture, so that the whole injection molding part has a three-dimensional depth effect, and the product is combined with functional aesthetics, so that the aesthetic texture and fashion of the product are improved; furthermore, if femtosecond laser textures are adopted, the product has more layering and better three-dimensional effect, the three-dimensional effect viewed at different angles is different, the generated color and ripple effect are also different, and dynamic and fashionable visual advantages are brought to the product;
(3) the laser texture in the mould or the specific pattern of the femtosecond laser texture and the like can be customized, so that the texture on the product is more flexibly selected, various requirements can be met, the application is wider, and the whole product has more market competitiveness.
Finally, it should be noted that the present invention is generally illustrated by one/a pair of components when describing the position of each component and the matching relationship therebetween, however, it should be understood by those skilled in the art that such position, matching relationship, etc. are also applicable to other components/other pairs of components.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.
Claims (10)
1. A high gloss injection molded part having a laser texture, the high gloss injection molded part having a layered structure comprising:
the substrate layer is prepared by adopting a rapid cooling and rapid heating process and is formed into a highlight injection molding piece with a nano laser texture structure or a femtosecond laser texture structure;
the transparent coating covers the substrate layer and is formed by reacting and curing a two-component coating so as to improve the surface scratch resistance of the highlight injection molding piece.
2. The high gloss injection molded part with laser texture according to claim 1, wherein the transparent coating layer enables the high gloss injection molded part with nano or femtosecond laser texture structure to have different stereo effect and/or color effect visually from different angles.
3. The high gloss injection molded part with laser texture according to claim 2, wherein the substrate layer and the transparent coating layer having the nano or femtosecond laser texture structure are molded in one step by means of a turntable.
4. The high gloss injection molded part with laser texture according to any one of claims 1 to 3, wherein the transparent coating layer of the injection molded part has a hardness at least above Shore D70.
5. The high gloss injection molded part with laser texture according to any one of claims 1 to 3, wherein the transparent coating of the injection molded part has self-healing properties, and the scratches generated can be gradually eliminated by treatment in a set temperature environment.
6. A rapid cooling and rapid heating injection mold for producing the high gloss injection molded part with laser texture according to any one of claims 1 to 5, comprising a first mold cavity for forming the substrate layer and a second mold cavity for forming the transparent coating layer, characterized in that the inner surface of the first mold cavity is preprocessed with nano laser texture or femtosecond laser texture so that the high gloss injection molded part has nano laser texture or femtosecond laser texture.
7. The rapid cooling and heating injection mold according to claim 6, wherein the mold temperature of the first mold cavity is:
before mold closing, rapidly heating to a temperature above the glass transition temperature of the material, and performing mold closing injection after the temperature reaches a first set temperature value;
after the mold closing and injection are finished, quickly reducing the temperature to the ejection temperature, and ejecting the workpiece after the temperature reaches a second set temperature value; and the number of the first and second electrodes,
the rapid cooling and rapid heating injection mold further comprises a rapid mold temperature changing device configured to cause the mold temperature to change rapidly, the rapid mold temperature changing device comprising one or more of the following devices: the device comprises a water vapor auxiliary variable-mold temperature device, a water auxiliary variable-mold temperature device, an oil auxiliary variable-mold temperature device and an electromagnetic induction variable-mold temperature device.
8. The rapid cooling and heating injection mold according to claim 6 or 7, wherein the waterway of the first mold cavity is designed to be close to the following pipeline of the mold cavity, and the diameter of the waterway, the distance between the water pipes and the surface distance from the waterway to the product are designed to make the surface temperature of the first mold cavity consistent.
9. A rapid cooling and heating injection mold as claimed in claim 6 or 7, wherein the core of the first mold cavity is designed to be heat-insulating to prevent heat loss and improve heating efficiency.
10. A rapid cooling and heating injection mold according to claim 6 or 7, characterized in that the first mold cavity is provided with a temperature sensor to realize the closed loop control of the rapid cooling and heating process among the mold end, the mold temperature machine and the injection molding machine through the feedback of the temperature sensor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116352959A (en) * | 2023-04-13 | 2023-06-30 | 天津岐塑科技有限公司 | Mobile phone shell and protective sleeve produced by spray forming in mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116352959A (en) * | 2023-04-13 | 2023-06-30 | 天津岐塑科技有限公司 | Mobile phone shell and protective sleeve produced by spray forming in mold |
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