Capillary cold nitrogen temperature uniformity constant device

Abstract

The present application relates to a capillary cold nitrogen temperature uniformity constant device, comprising a forming die, the forming die has a cavity inside, the forming die is provided with a suspension cavity outside the cavity, the suspension cavity is provided with a capillary floating self-adaptive unit capable of freely floating, the capillary floating self-adaptive unit comprises a plurality of floating self-adaptive small modules connected in sequence and independent of each other. The capillary floating self-adaptive unit in the present application can automatically adjust the adhesion to the surface of the cavity according to the shape of the precision transparent photosensitive component, so as to ensure that the temperature received by each part of the precision transparent photosensitive component during forming reaches the designed setting value, and ensure the precision and optical performance of the precision transparent photosensitive component.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of precision forming transparent photosensitive component manufacturing technology, in particular to a capillary tube cold nitrogen temperature uniformity constant device. BACKGROUND

[0002] At present, most of the precision forming transparent photosensitive components are formed by forming molds. During forming, the heat released during the cooling and transformation of the molten material into the formed product is generally transformed and consumed by the external forced cooling device in the forming mold, radiation in the forming mold, and conduction of each metal material in the forming mold. As a result, the following defects are produced:

[0003] 1. At present, the precision forming transparent photosensitive components (such as long-focus curved mirrors for automotive driving head-up display) are formed by forming molds. Due to the temperature difference between each part of the forming mold during forming, different thermal expansion (caused by the different sequence of molten material entering the cavity) and cold shrinkage (caused by the shape and structure limitation of the external forced cooling device, resulting in different cooling effects at each place) occur in each part of the forming cavity, which causes changes in product size, position structure, and optical performance, and cannot meet the design requirements.

[0004] 2. Due to the difference in temperature regulation system setting in the forming mold and the thermal conductivity coefficient of the materials used in the forming parts, the structure of the precision transparent photosensitive component product produces a small amount of peristaltic deformation, the molecular structure inside the product changes, and the controllability of the optical performance of the formed product is affected.

[0005] 3. The temperature of the precision transparent photosensitive component product at each point in the mold forming cavity is very different, which cannot guarantee the temperature requirements of the precision transparent photosensitive component at each position during forming, thereby causing the precision transparent photosensitive component to produce a small amount of deformation due to the non-uniformity of the temperature during the forming process, and the precision and optical performance of the product cannot meet the design requirements.

[0006] 4. At present, the temperature of the precision transparent photosensitive component in the forming mold forming cavity during forming is provided by the equipment used during injection according to the set temperature value. However, the temperature loss in the channel between the equipment used during injection and the forming mold forming cavity during forming makes it impossible to meet the design requirements for the temperature at each point on the precision transparent photosensitive component, which greatly limits the forming precision of the precision forming transparent photosensitive component, and the precision of the product is difficult to guarantee, and the optical performance cannot meet the design requirements. SUMMARY

[0007] The present application aims to overcome the shortcomings of the prior art and provide a capillary tube cold nitrogen temperature uniformity constant device to improve the forming quality of precision forming transparent photosensitive components.

[0008] To achieve the above object, the present application adopts the following technical solutions:

[0009] The capillary tube cold nitrogen temperature uniformity constant device comprises a forming die, the forming die has a cavity inside, a suspension cavity is arranged outside the cavity, a capillary tube floating self-adaptive unit capable of freely floating is arranged in the suspension cavity, and the capillary tube floating self-adaptive unit is used for self-adaptive adjustment of the temperature at each part of the cavity.

[0010] During work, the multi-point temperature detection unit detects the temperature at each part of the cavity in real time and transmits the temperature data to the signal processing unit, the signal processing unit controls the cold nitrogen generating unit to output the required cold nitrogen and the adjustment pressure gas generating unit to output a certain pressure gas to the capillary tube floating self-adaptive unit after comparison and calculation of the measured temperature data and the temperature value set during forming.

[0011] Further, the suspension cavity is filled with nitrogen.

[0012] The above technical solutions have the following beneficial effects:

[0013] 1. The temperature can be accurately controlled in time and dynamically according to the temperature at each part and point of the precision transparent photosensitive component during forming, so that the precision and optical performance of the product are not affected by the different temperatures at each part and point during forming.

[0014] 2. The capillary tube floating self-adaptive unit can automatically adjust the shape of the precision transparent photosensitive component to ensure that the temperature received by the precision transparent photosensitive component during forming reaches the designed set value, thereby ensuring the precision and optical performance of the precision transparent photosensitive component.

[0015] 3. The device can pre-set the temperature control of the forming die according to the thermal conductivity coefficient of the material used for the forming die. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0018] like Figure 1 As shown, the capillary cold nitrogen temperature uniform and constant device of the present invention includes a molding mold 1, the molding mold 1 has a cavity 2 inside, and a suspension cavity 3 is provided inside the molding mold 1 outside the cavity 2, and the suspension cavity 3 is filled with nitrogen gas.

[0019] The suspension cavity 3 is equipped with a capillary floating adaptive unit 4 that can float freely. The capillary floating adaptive unit 4 is used to adaptively adjust the temperature at various points in the cavity 2. The capillary floating adaptive unit 4 includes multiple sequentially connected and independent floating adaptive sub-modules 41. Each floating adaptive sub-module 41 is connected to the regulating pressure gas generating unit 5 through its own pressure regulating gas inlet and outlet 411. Each floating adaptive module 41 is also connected to the cold nitrogen generating unit 6 through its own cold nitrogen delivery inlet and outlet 412.

[0020] The outer surface of the cavity 2 is equipped with multiple temperature detection units 7. These units detect the temperature of various parts of the cavity 2 and transmit the detected temperature data to the signal processing unit 8. The signal processing unit 8 is electrically connected to the cold nitrogen generating unit 6 and the regulating pressure gas generating unit 5, respectively, and controls their operation. Specifically, based on the shape of the molded product and the timely detected temperature, cold nitrogen is introduced into the floating adaptive module 41 to cool the cavity 2. Simultaneously, a certain amount of pressurized gas is introduced into the floating adaptive module 41 to adjust its position for optimal cooling.

[0021] During operation, molten plastic enters the molding cavity 2. The multi-point temperature detection unit 7 detects the temperature of each part of the cavity 2 in real time and transmits the temperature data to the signal processing unit 8. The signal processing unit 8 compares and calculates the measured temperature data with the temperature value set during molding, and then controls the cold nitrogen generating unit 6 to output the required cold nitrogen and the pressure gas generating unit 5 to output a certain pressure of gas to the capillary floating adaptive unit 4. The corresponding floating adaptive module 41 in the capillary floating adaptive unit 4 automatically adjusts the distance between itself and the cavity wall of the cavity 2 according to the delivered cold nitrogen and a certain pressure of gas, so that the cold nitrogen carries away the heat to ensure that the temperature at that point is at the set value, so that the molding temperature of each point of the precision transparent photosensitive component is uniform, and the precision and optical performance of the precision transparent photosensitive component are guaranteed.

[0022] The above describes a specific embodiment of the present application, but those skilled in the art should understand that this is only an example, and those skilled in the art can make various changes or modifications to this embodiment without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. A capillary cooling nitrogen temperature uniformity and constant device, comprising a molding die having an internal cavity, characterized in that: The molding die has a suspension cavity outside the cavity, which contains a capillary floating adaptive unit that can float freely. The capillary floating adaptive unit is used to adaptively adjust the temperature at various points in the cavity. The capillary floating adaptive unit includes multiple sequentially connected and independent floating adaptive modules. Each floating adaptive module is connected to a regulating pressure gas generating unit through its own pressure regulating gas inlet and outlet, and each floating adaptive module is also connected to a cold nitrogen generating unit through its own cold nitrogen delivery inlet and outlet. The outer surface of the cavity is provided with multiple temperature detection units, which are used to detect the temperature at various points in the cavity and transmit the detected temperature data to a signal processing unit. The signal processing unit is electrically connected to the cold nitrogen generating unit and the regulating pressure gas generating unit and controls their operation. During operation, the multi-point temperature detection unit detects the temperature of various parts of the cavity in real time and transmits the temperature data to the signal processing unit. The signal processing unit compares and calculates the measured temperature data with the temperature value set during molding, and then controls the cold nitrogen generating unit to output the required cold nitrogen and the pressure gas generating unit to output a certain pressure of gas to the capillary floating adaptive unit. The corresponding floating adaptive module in the capillary floating adaptive unit automatically adjusts the distance between itself and the cavity wall according to the delivered cold nitrogen and a certain pressure of gas.

2. The capillary cold nitrogen temperature uniformity and constant device according to claim 1, characterized in that: The suspension cavity is filled with nitrogen gas.

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