A freeform optical mold modular temperature control system

Abstract

This utility model discloses a modular temperature control system for freeform surface optical molds. The mold core is embedded in the template, and the mold middle is embedded in the mold core. Adapter blocks are installed at the left and right ends of a water collection block, which is mounted on the template. The adapter block has three channels, and the water collection block has six main water channels. One end of each main water channel is closed in the water collection block, and the other end is connected to one of the six channels on the two adapter blocks. The template, mold core, and mold middle also have a first water path, several second water paths, and several third water paths. The first water path connects to two of the main water channels to form a first parallel water path, the second water path connects to two of the main water channels to form a second parallel water path, and the third water path connects to two of the main water channels to form a third parallel water path. The first, second, and third parallel water paths are all independent water paths. The water collection block has temperature measuring holes that connect the first, second, and third parallel water paths.

Description

Technical Field

[0001] This utility model relates to the field of mold temperature control technology, specifically to a modular temperature control system for freeform surface optical molds. Background Technology

[0002] With the development of automotive intelligence, the demand for HUDs is constantly increasing. Freeform surface mirrors are key optical components in HUD systems, magnifying images and adapting them to the windshield to correct optical distortion, improve imaging quality, and expand the field of view, providing drivers with a better visual experience. In the future, as HUDs penetrate the mid-to-low-end vehicle market and AR-HUD technology continues to develop, the demand for freeform surface mirrors will continue to grow. Simultaneously, the requirements for the surface precision of freeform surfaces will become increasingly stringent, requiring not only control over the size of the surface but also control over its shape according to different usage scenarios.

[0003] To produce freeform surface reflectors with high-precision surface requirements, existing injection molds typically control product deformation by adjusting the mold temperature. However, freeform surface reflectors are large in size, requiring numerous water channels in the mold, making surface adjustment difficult. Existing temperature control systems can only adjust the size of the surface, not its shape. This results in significant time consumption during assembly and adjustment, impacting production efficiency and frequently leading to situations where products failing to meet surface requirements are not produced.

[0004] Therefore, when producing freeform optical mirrors suitable for HUDs, it is necessary to design a suitable water system and a temperature control system adapted to the water system. Otherwise, the numerous water channels will cause temperature fluctuations during mass production, resulting in poor production stability. Utility Model Content

[0005] The purpose of this invention is to provide a modular temperature control system for freeform surface optical molds to solve the problems described in the background art.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A modular temperature control system for freeform surface optical molds includes a template, a mold core, a mold mandrel, a water collection block, and adapter blocks. The mold core is embedded in the template, and the mold mandrel is embedded in the mold core. Two adapter blocks are installed at the left and right ends of the water collection block, respectively. The water collection block is mounted on the template. Each adapter block has a first, second, and third channel penetrating through it. Six main water channels are formed within the water collection block, with one end of each channel closed within the block and the other end corresponding to the first, second, and third channels on the two adapter blocks. The template and mold core are also included. The mold core is also provided with several first water channels, several second water channels and several third water channels that simultaneously connect the mold template, mold core and mold core. Several first water channels are connected to two main water channels to form a first parallel water channel, several second water channels are connected to two main water channels to form a second parallel water channel, and several third water channels are connected to two main water channels to form a third parallel water channel. The first parallel water channel, the second parallel water channel and the third parallel water channel are all independent water channels. The outer wall of the water collection block is also provided with temperature measuring holes that connect the first parallel water channel, the second parallel water channel and the third parallel water channel.

[0008] A further technical solution is that the six main waterways are respectively the first main channel, the second main channel, the third main channel, the fourth main channel, the fifth main channel, and the sixth main channel. One end of the first main channel is closed in the water collection block, and the other end of the first main channel is connected to the first channel of the transition block at the left end of the water collection block. One end of the second main channel is closed in the water collection block, and the other end of the second main channel is connected to the first channel of the transition block at the right end of the water collection block. One end of the third main channel is closed in the water collection block, and the other end of the third main channel is connected to the second channel of the transition block at the left end of the water collection block. One end of the fourth main channel is closed in the water collection block, and the other end of the fourth main channel is connected to the second channel of the transition block at the right end of the water collection block and the other end of the fourth main channel is connected to the third channel of the transition block at the left end of the water collection block. One end of the fifth main channel is closed in the water collection block, and the other end of the fifth main channel is connected to the third channel of the transition block at the right end of the water collection block.

[0009] The first waterway includes multiple waterways inside the template; the second waterway includes multiple side waterways inside the template on both sides of the internal waterway; and the third waterway includes multiple external waterways inside the template on both sides of the side waterway.

[0010] The first water channel includes a U-shaped inner water channel opened in the mold core and connected to the water channel inside the template; the second water channel includes a U-shaped side water channel opened in the mold core and connected to the side water channel inside the template; the third water channel includes a U-shaped outer water channel opened in the mold core and connected to the outer water channel outside the template; the third water channel also includes a surrounding water channel opened in the mold core and connected to the outer water channel outside the template.

[0011] The water collection block is also provided with multiple connecting water channels. The water channels inside the template are connected to the first main channel and the second main channel through the multiple connecting water channels, so that the first main channel, the second main channel, the water channels inside the template and the U-shaped water channels form the first parallel waterway.

[0012] The template side waterway is connected to the third main channel and the fourth main channel through multiple connecting waterways, thereby forming a second parallel waterway consisting of the third main channel, the fourth main channel, the template side waterway, and the U-shaped side waterway.

[0013] The external waterway of the template is connected to the fifth main channel and the sixth main channel through multiple connecting waterways, thereby forming a third parallel waterway consisting of the fifth main channel, the sixth main channel, the external waterway of the template, the U-shaped external waterway, and the surrounding waterway.

[0014] A further technical solution is that the bottom of the inner U-shaped waterway, the bottom of the side U-shaped waterway, and the bottom of the outer U-shaped waterway are arranged in the same direction and are parallel to each other, and the bottom of the inner U-shaped waterway, the bottom of the side U-shaped waterway, the bottom of the outer U-shaped waterway, and the surrounding waterway are parallel to each other.

[0015] A further technical solution is that the first, second, and third channels of the adapter block are also equipped with quick connectors at the ends that are not connected to the water collection block.

[0016] A further technical solution includes a mold temperature controller, a high-temperature water pipe, and a temperature sensor. The temperature sensor is sealed and installed in the temperature measuring hole. The temperature sensor is electrically connected to the mold temperature controller, and the quick connector is connected to the mold temperature controller through the high-temperature water pipe.

[0017] A further technical solution is that the number of U-shaped inner waterways is three and they are equally spaced; the number of U-shaped side waterways is four and they are symmetrically distributed on both sides of the U-shaped inner waterways; the number of U-shaped outer waterways is two and they are symmetrically distributed on both sides of the U-shaped side waterways; and the surrounding waterways encircle the outside of the U-shaped inner waterways, U-shaped side waterways, and U-shaped outer waterways.

[0018] A further technical solution is that the bottom of the U-shaped inner waterway, the bottom of the U-shaped side waterway, and the bottom of the U-shaped outer waterway rise sequentially from the bottom of the U-shaped inner waterway at the center outwards to both sides.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The integrated water system design reduces the number of water pipes, improves assembly efficiency, and reduces mold manufacturing costs.

[0021] 2. The integrated water circuit design simplifies the water connection process during the mold installation stage, avoids the risk of incorrect water circuit connection, improves water connection efficiency, enables rapid mold changeover, and increases the utilization rate of the injection molding machine.

[0022] 3. By combining water channels through mold flow analysis, the desired surface shape can be quickly adjusted, reducing the number of mold trials and shortening the product delivery cycle.

[0023] 4. Use temperature sensors to monitor water temperature in real time to ensure the stability of the production process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0025] Figure 2 This is a first schematic diagram of the internal structure;

[0026] Figure 3 This is a second schematic diagram of the internal structure;

[0027] Figure 4 This is the third schematic diagram of the internal structure;

[0028] Figure 5 This is the fourth schematic diagram of the internal structure;

[0029] Figure 6 Figure 5 Front view;

[0030] Figure 7 for Figure 5 Top view;

[0031] Figure 8 This is the first schematic diagram of the interior of the water collection block;

[0032] Figure 9 This is a second schematic diagram of the interior of the water collection block;

[0033] Figure 10 This is a third schematic diagram of the interior of the water collection block;

[0034] Figure 11 This is a schematic diagram of the overall waterway system.

[0035] Figure 12 This is a schematic diagram of the first parallel waterway;

[0036] Figure 13 This is a schematic diagram of the second parallel waterway;

[0037] Figure 14 This is a schematic diagram of the third parallel waterway;

[0038] Figure 15 This is the fourth schematic diagram of the interior of the water collection block.

[0039] In the diagram, 1. Mold temperature controller, 2. High-temperature water pipe, 3. Adapter block, 4. Water collection block, 5. Quick connector, 6. Temperature measuring hole, 7. Mold core, 8. Mold core, 9. Mold plate, 10. Inner water channel of mold plate, 11. Side water channel of mold plate, 12. Outer water channel of mold plate, 13. Curved mold, 14. Flow direction of gate, 15. First main channel, 16. Second main channel, 17. Circular water channel, 18. U-shaped inner water channel, 19. U-shaped side water channel, 20. U-shaped outer water channel, 21. Third main channel, 22. Fourth main channel, 23. Fifth main channel, 24. Sixth main channel, 25. Connecting water channel, 26. First channel. Detailed Implementation

[0040] To better understand the technical content of this utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0041] It should be noted that the first channel 26, the second channel, and the third channel mentioned in this disclosure are only for indicating the number of channels and for facilitating the demonstration of connection relationships, and do not limit the naming and positional relationship of the first channel 26, the second channel, and the third channel.

[0042] See Figures 1 to 15 A modular temperature control system for freeform surface optical molds includes a template 9, a mold core 7, a mold core 8, a water collection block 4, and a connecting block 3. The mold core 7 is embedded in the template 9, and the mold core 8 is embedded in the mold core 7. There are two connecting blocks 3, which are respectively installed at the left and right ends of the water collection block 4. The water collection block 4 is installed on the template 9. The connecting block 3 has a first channel 26, a second channel, and a third channel that penetrate through it. The water collection block 4 has six main water channels. One end of each of the six main water channels is closed in the water collection block 4, and the other end is connected to the first channel 26, the second channel, and the third channel on the two connecting blocks 3 respectively. Furthermore, the template 9, mold core 7, and mold core 8 are also provided with a number of first water channels, a number of second water channels, and a number of third water channels that simultaneously connect the template 9, mold core 7, and mold core 8. The number of first water channels are connected to the two main water channels to form a first parallel water channel, the number of second water channels are connected to the two main water channels to form a second parallel water channel, and the number of third water channels are connected to the two main water channels to form a third parallel water channel. The first parallel water channel, the second parallel water channel, and the third parallel water channel are all independent water channels. The outer wall of the water collection block 4 is also provided with a temperature measuring hole 6 that connects the first parallel water channel, the second parallel water channel, and the third parallel water channel.

[0043] Specifically, the six main waterways are the first main channel 15, the second main channel 16, the third main channel 21, the fourth main channel 22, the fifth main channel 23, and the sixth main channel 24. One end of the first main channel 15 is enclosed in the water collection block 4, and the other end of the first main channel 15 is connected to the first channel 26 of the transition block 3 at the left end of the water collection block 4. One end of the second main channel 16 is enclosed in the water collection block 4, and the other end of the second main channel 16 is connected to the first channel 26 of the transition block 3 at the right end of the water collection block 4. One end of the third main channel 21 is enclosed in the water collection block 4. The other end of the third main channel 21 is connected to the second channel of the transition block 3 at the left end of the water collection block 4. One end of the fourth main channel 22 is closed in the water collection block 4, and the other end of the fourth main channel 22 is connected to the second channel of the transition block 3 at the right end of the water collection block 4. One end of the fourth main channel 22 is closed in the water collection block 4, and the other end of the fourth main channel 22 is connected to the third channel of the transition block 3 at the left end of the water collection block 4. One end of the fifth main channel 23 is closed in the water collection block 4, and the other end of the fifth main channel 23 is connected to the third channel of the transition block 3 at the right end of the water collection block 4.

[0044] The first waterway includes multiple internal waterways 10 opened inside the template 9; the second waterway includes multiple side waterways 11 opened inside the template 9 on both sides of the internal waterways 10; and the third waterway includes multiple external waterways 12 opened inside the template 9 on both sides of the side waterways 11.

[0045] The first water channel includes a U-shaped inner water channel 18 opened in the mold core 8 and connected to the inner water channel 10 of the template; the second water channel includes a U-shaped side water channel 19 opened in the mold core 8 and connected to the side water channel 11 of the template; the third water channel includes a U-shaped outer water channel 20 opened in the mold core 8 and connected to the outer water channel 12 of the template; the third water channel also includes a surrounding water channel 17 opened in the mold core 7 and connected to the outer water channel 12 of the template.

[0046] The water collection block 4 is also provided with multiple connecting water channels 25. The water channel 10 inside the template is connected to the first main channel 15 and the second main channel 16 through the multiple connecting water channels 25, so that the first main channel 15, the second main channel 16, the water channel 10 inside the template and the U-shaped water channel 18 form the first parallel waterway.

[0047] The template side waterway 11 is connected to the third main waterway 21 and the fourth main waterway 22 through multiple connecting waterways 25, thereby forming a second parallel waterway by the third main waterway 21, the fourth main waterway 22, the template side waterway 11, and the U-shaped side waterway 19.

[0048] The template outer waterway 12 is connected to the fifth main channel 23 and the sixth main channel 24 through multiple connecting waterways 25, thereby forming a third parallel waterway consisting of the fifth main channel 23, the sixth main channel 24, the template outer waterway 12, the U-shaped outer waterway 20, and the surrounding waterway 17.

[0049] Specifically, the bottom of the U-shaped inner water channel 18, the bottom of the U-shaped side water channel 19, and the bottom of the U-shaped outer water channel 20 are arranged in the same direction and are parallel to each other. The bottom of the U-shaped inner water channel 18, the bottom of the U-shaped side water channel 19, the bottom of the U-shaped outer water channel 20, and the surrounding water channel 17 are parallel to each other. The bottom of the U-shaped inner water channel 18, the bottom of the U-shaped side water channel 19, and the bottom of the U-shaped outer water channel 20 are parallel to the flow direction 14 of the gating gate.

[0050] Specifically, quick connectors 5 are provided at the ends of the first channel 26, the second channel and the third channel of the adapter block 3 that are not connected to the water collection block 4.

[0051] Specifically, it also includes a mold temperature controller 1, a high-temperature water pipe 2, and a temperature sensor. The temperature sensor is sealed and installed in the temperature measuring hole 6. The temperature sensor is electrically connected to the mold temperature controller 1, and the quick connector 5 is connected to the mold temperature controller 1 through the high-temperature water pipe 2.

[0052] It should be noted that the mold temperature controller 1 is a device commonly used in injection molding control in the existing technology, and will not be described in detail here.

[0053] Specifically, there are three U-shaped inner waterways 18, which are equally spaced; four U-shaped side waterways 19, which are symmetrically and equally spaced on both sides of the U-shaped inner waterways 18; two U-shaped outer waterways 20, which are symmetrically and equally spaced on both sides of the U-shaped side waterways 19; and a surrounding waterway 17 surrounds the outer sides of the U-shaped inner waterways 18, U-shaped side waterways 19, and U-shaped outer waterways 20.

[0054] Specifically, the bottom of the U-shaped inner waterway 18, the bottom of the U-shaped side waterway 19, and the bottom of the U-shaped outer waterway 20 rise sequentially from the bottom of the U-shaped inner waterway 18 at the center outwards to both sides.

[0055] The core 8 is provided with a casting position for the curved mold 13. The first water channel, the second water channel and the third water channel are symmetrically distributed about the center of the curved mold 13, and the bottom of the U-shaped inner water channel 18, the bottom of the U-shaped side water channel 19 and the bottom of the U-shaped outer water channel 20 are all at the same distance from the curved mold 13.

[0056] The design concept and working principle of this utility model are as follows:

[0057] Design concept:

[0058] The water channels in the mold are set parallel to the flow direction 14 of the gate, and the distance between each water channel and the curved mold 13 is the same. The water channels are symmetrically distributed about the curved mold 13 to ensure uniform cooling of the product and reduce product deformation.

[0059] By connecting the water channels of numerous molds in parallel in certain areas, the amount of water entering and exiting the molds can be reduced.

[0060] The multiple parallel water circuits are then integrated into a single water collection block 4 to form a modular temperature control system.

[0061] During the mold design stage, the water channel combination scheme needs to be simulated and analyzed using mold flow analysis software to ensure that the designed water channel combination scheme can achieve the preset surface shape after injection molding.

[0062] Temperature sensors are installed on each water outlet pipe of water collection block 4 to monitor the water temperature in real time. When the temperature fluctuates, the temperature of mold temperature controller 1 is automatically adjusted to ensure the stability of the entire temperature control system.

[0063] Working principle:

[0064] 7 water channels surround the mold core 8 evenly arranged

[0065] The water channels for mold core 7 and mold core 8 both originate from mold plate 9, and the transition points are sealed with sealing rings.

[0066] The waterways are grouped, and multiple waterways in each group are combined into one waterway by connecting them in parallel. After the parallel connection, the cross-sectional area of ​​the main channel is greater than the sum of the cross-sectional areas of each branch channel.

[0067] During the mold design stage, the water channel combination scheme needs to be simulated and analyzed using mold flow analysis software to ensure that the designed water channel combination scheme can achieve the preset surface shape requirements after injection molding.

[0068] Each water channel on the water collection block 4 is equipped with a temperature sensor, and the signal from the temperature sensor is connected to the mold temperature controller 1.

[0069] During the injection molding process, when the temperature sensor detects temperature fluctuations, it sends a signal back to the mold temperature controller 1. The mold temperature controller 1 adjusts the temperature in real time to ensure that the temperature of each water circuit is within the preset range.

[0070] It should be noted that the mold core 7 of this invention has 2 sets of water channels and the mold core 8 has 9 sets of water channels, using a 3+3+4 water channel combination. This does not mean that there is only this one combination. The number and combination of water channels need to be determined by mold flow analysis in combination with the shape, size and surface requirements of the product.

[0071] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular temperature control system for freeform surface optical molds, characterized in that: The system includes a template, a mold core, a mold insert, a water collection block, and transition blocks. The mold core is embedded within the template, and the mold insert is embedded within the mold core. Two transition blocks are installed at the left and right ends of the water collection block, respectively. The water collection block is mounted on the template. Each transition block has a first, second, and third channel penetrating through it. Six main water channels are formed within the water collection block, with one end of each channel closed within the block and the other end connecting to the first, second, and third channels on the two transition blocks. The template, mold core, and mold insert also have similar... The system includes several first water channels, several second water channels, and several third water channels connecting the mold plate, mold core, and mold core. Several first water channels are connected to two main water channels to form a first parallel water channel, several second water channels are connected to two main water channels to form a second parallel water channel, and several third water channels are connected to two main water channels to form a third parallel water channel. The first, second, and third parallel water channels are all independent water channels. The outer wall of the water collection block is also provided with temperature measuring holes that connect the first, second, and third parallel water channels.

2. The modular temperature control system for freeform surface optical molds according to claim 1, characterized in that: The six main waterways are the first main channel, the second main channel, the third main channel, the fourth main channel, the fifth main channel, and the sixth main channel. One end of the first main channel is enclosed in a water collection block, and the other end of the first main channel is connected to the first channel of the transition block at the left end of the water collection block. One end of the second main channel is enclosed in a water collection block, and the other end of the second main channel is connected to the first channel of the transition block at the right end of the water collection block. One end of the third main channel is enclosed in a water collection block, and the other end of the third main channel is connected to the second channel of the transition block at the left end of the water collection block. One end of the fourth main channel is enclosed in a water collection block, and the other end of the fourth main channel is connected to the second channel of the transition block at the right end of the water collection block, and the other end of the fourth main channel is connected to the third channel of the transition block at the left end of the water collection block. One end of the fifth main channel is enclosed in a water collection block, and the other end of the fifth main channel is connected to the third channel of the transition block at the right end of the water collection block. The first waterway includes multiple waterways inside the template; the second waterway includes multiple side waterways inside the template on both sides of the waterways inside the template; and the third waterway includes multiple external waterways inside the template on both sides of the side waterways inside the template. The first water channel includes a U-shaped inner water channel opened in the mold core and connected to the water channel inside the template; the second water channel includes a U-shaped side water channel opened in the mold core and connected to the side water channel inside the template; the third water channel includes a U-shaped outer water channel opened in the mold core and connected to the outer water channel outside the template; the third water channel also includes a surrounding water channel opened in the mold core and connected to the outer water channel outside the template. The water collection block is also provided with multiple connecting water channels. The water channels inside the template are connected to the first main channel and the second main channel through the multiple connecting water channels, so that the first main channel, the second main channel, the water channels inside the template and the U-shaped water channels form the first parallel waterway. The template side waterway is connected to the third main channel and the fourth main channel through multiple connecting waterways, thereby forming a second parallel waterway consisting of the third main channel, the fourth main channel, the template side waterway, and the U-shaped side waterway. The external waterway of the template is connected to the fifth main channel and the sixth main channel through multiple connecting waterways, thereby forming a third parallel waterway consisting of the fifth main channel, the sixth main channel, the external waterway of the template, the U-shaped external waterway, and the surrounding waterway.

3. The modular temperature control system for freeform surface optical molds according to claim 2, characterized in that: The bottom of the inner U-shaped waterway, the bottom of the side U-shaped waterway, and the bottom of the outer U-shaped waterway are arranged in the same direction and are parallel to each other. The bottom of the inner U-shaped waterway, the bottom of the side U-shaped waterway, the bottom of the outer U-shaped waterway, and the surrounding waterway are parallel to each other.

4. The modular temperature control system for freeform surface optical molds according to claim 3, characterized in that: The first, second, and third channels of the adapter block are also equipped with quick connectors at the ends that are not connected to the water collection block.

5. The modular temperature control system for freeform surface optical molds according to claim 4, characterized in that: It also includes a mold temperature controller, a high-temperature water pipe, and a temperature sensor. The temperature sensor is sealed and installed in the temperature measuring hole. The temperature sensor is electrically connected to the mold temperature controller, and the quick connector is connected to the mold temperature controller through the high-temperature water pipe.

6. The modular temperature control system for freeform surface optical molds according to claim 5, characterized in that: The U-shaped inner waterway consists of three channels spaced at equal intervals. The U-shaped side waterways consist of four channels spaced at equal intervals in pairs on both sides of the inner waterway. The U-shaped outer waterway consists of two channels spaced at equal intervals in pairs on both sides of the side waterway. The surrounding waterways encircle the outer sides of the inner, side, and outer waterways.

7. The modular temperature control system for freeform surface optical molds according to claim 6, characterized in that: The bottom of the U-shaped inner waterway, the bottom of the U-shaped side waterway, and the bottom of the U-shaped outer waterway rise sequentially from the bottom of the U-shaped inner waterway at the center outwards to both sides.

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