Multi-layer cooling runner ultra-thin aspheric optical plastic lens precision forming mold

Abstract

The utility model discloses a multilayer cooling runner ultrathin aspheric surface optical plastic lens precision forming mould relates to injection mould technical field, including left mould frame, the left mould frame right side's middle position department fixedly connected with left mould frame, the right side of left mould frame is provided with right mould frame, right mould frame's left side fixedly connected with right mould plate, the inside of left mould frame is provided with multistage cooling's cooling assembly. That multilayer cooling runner ultrathin aspheric surface optical plastic lens precision forming mould is provided with heat conduction plate, square frame, fin, liquid outlet, hollow plate, perforated plate, water outlet and liquid inlet pipe, when using, the water chilling unit will cool water through liquid inlet pipe and pump into hollow plate, and the heat conduction plate and fin are sprayed, make its temperature even reduction, and fill up in square frame, realized multilayer runner promotion cooling evenness function, solve the problem that the device does not have multilayer runner promotion cooling evenness function.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a precision molding mold for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels. Background Technology

[0002] Ultra-thin aspherical optical plastic lenses are optical components made from optical-grade polymers such as PMMA, PC, COC, and OKP series through injection molding. The center thickness is typically <1mm, and can even reach 0.2-0.5mm. Its surface profile is not a simple sphere, but a more complex mathematical surface.

[0003] In current ultra-thin aspherical optical plastic lens production workshops, injection molding technology is mostly used to produce these lenses. The molds used are injection molds, which are filled with liquefied optical plastic after the left and right molds are closed by hydraulic equipment. After solidification and cooling, the plastic is ready to be used. However, there are some functional deficiencies in actual use, and there is room for improvement. For example, current injection molds usually use a single-layer cooling channel or a coil inside the mold for cooling. The single-layer channel cools down quickly, but it has shortcomings in the uniformity of cooling. In the initial stage of cooling, the area near the liquid inlet cools down quickly, while the area near the liquid outlet cools down slowly, resulting in a significant temperature difference. This causes uneven cooling of the lens, which can lead to bubbles, flocculent matter, etc. The multi-layer channel does not have the function of improving the uniformity of cooling.

[0004] Now, a novel multi-layer cooling channel ultra-thin aspherical optical plastic lens precision molding die is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a precision molding mold for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels, so as to solve the problem mentioned in the background art of not having the function of improving the uniformity of cooling through multi-layer channels.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precision molding mold for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels, comprising a left mold frame, a left mold box fixedly connected to the middle position of the right side of the left mold frame, mold frame guide rods fixedly connected laterally to the four corners of the right side of the left mold frame, limit guide rods fixedly connected to the four corners of the right side of the left mold box, a right mold frame provided on the right side of the left mold frame, a right template fixedly connected to the left side of the right mold frame, a main channel provided on the right side of the right template, a mold core plate provided inside the right side of the left mold box, a lens mold groove opened on the right side of the mold core plate, and a multi-layer cooling cooling component provided inside the left mold frame.

[0007] The cooling component includes a square frame, which is fixedly connected inside the left mold frame. A heat-conducting plate is fixedly connected to the right side of the square frame, and multiple sets of fins are fixedly connected to the left side of the heat-conducting plate. A drain port is fixedly connected to the bottom of the square frame, and a hollow plate is fixedly connected to the left side of the square frame. A perforated plate is fixedly connected to the right side of the hollow plate, and multiple sets of water outlet holes are opened inside the perforated plate. An inlet pipe is fixedly connected to the bottom of the hollow plate.

[0008] As a further technical solution of this utility model, the right side of the heat-conducting plate and the left side of the mold core plate are attached to each other, and the fins are arranged at equal intervals.

[0009] As a further technical solution of this utility model, the left side of the fin and the right side of the perforated plate are attached to each other, and the position and range of the fin correspond to the lens mold groove.

[0010] As a further technical solution of this utility model, the interiors of the square frame and the drain port are connected, the interiors of the hollow plate and the inlet pipe are connected, and the interiors of the hollow plate and the perforated plate are connected.

[0011] As a further technical solution of this utility model, a first three-way connector is fixedly connected to the bottom end of the drain port, a first solenoid valve is fixedly installed on the right side of the bottom of the first three-way connector, a second solenoid valve is fixedly installed on the left side of the bottom of the first three-way connector, a second three-way connector is fixedly connected to the bottom end of the inlet pipe, a third solenoid valve is fixedly installed on the right side of the bottom of the second three-way connector, and a fourth solenoid valve is fixedly installed on the left side of the bottom of the second three-way connector.

[0012] As a further technical solution of this utility model, the drain port and the first three-way connector are internally connected, and the inlet pipe and the second three-way connector are internally connected.

[0013] As a further technical solution of this utility model, a mold core insertion port is provided on the right side of the left mold frame, and fixing screw holes are provided at the four corners on the right side of the mold core plate, and countersunk screw holes are provided at the four corners on the right side of the left mold frame, with countersunk bolts inserted horizontally inside the countersunk screw holes.

[0014] As a further technical solution of this utility model, the countersunk bolt passes through the countersunk screw hole and extends into the interior of the fixing screw hole. The shape and size of the outside of the mold core plate are adapted to the shape and size of the inside of the mold core insertion. The mold core plate can be moved back and forth along the interior of the mold core insertion.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the multi-layer cooling channel ultra-thin aspherical optical plastic lens precision molding mold not only realizes the function of improving the uniformity of cooling through the multi-layer channel, but also realizes the function of easy temperature control and preheating, and also realizes the function of easy mold core replacement.

[0016] (1) By setting up a heat-conducting plate, a square frame, fins, a drain port, a hollow plate, a perforated plate, a water outlet, and an inlet pipe, when in use, under the push of the hydraulic mechanism, the left mold frame and the right mold plate close the mold. The liquefied optical plastic enters between the left mold frame and the right mold plate along the main channel, quickly filling the lens mold groove in the mold core plate. After cooling, the mold can be opened and taken out. During the cooling process, the chiller pumps the cooling water into the hollow plate through the inlet pipe. As the water pressure in the hollow plate increases, the water flows into the square frame along the perforated plate and the water outlet, spraying the heat-conducting plate and fins to make their temperature drop evenly and fill the square frame. The temperature of the mold core plate is transferred to the square frame through the heat-conducting plate. The low temperature generated in the square frame can make it cool down quickly. The lens mold groove area in the mold core plate has the highest temperature. Its temperature is conducted to the square frame through the fins and exchanges heat with the cold water in the square frame. The cold water after heat exchange is discharged from the drain port. The cycle can be repeated to realize the function of improving the uniformity of cooling through the multi-layer flow channel.

[0017] (2) By setting a first three-way connector, a first solenoid valve, a second solenoid valve, a second three-way connector, a third solenoid valve and a fourth solenoid valve, when in use, the water inlet pipe and return pipe of the chiller unit are connected to the third solenoid valve of the second three-way connector and the first solenoid valve of the first three-way connector, and the water inlet pipe and return pipe of the hot water unit are connected to the fourth solenoid valve of the second three-way connector and the second solenoid valve of the first three-way connector. By controlling the opening and closing of different solenoid valves, the circulating liquid can be flexibly changed, cold water is passed to cool down, and hot water is passed to preheat, thus realizing the function of easy temperature control and preheating.

[0018] (3) By setting up a mold core insertion port, mold core plate, lens mold groove, fixing screw hole, countersunk bolt and countersunk screw hole, when using, the mold core plate can be replaced by simply removing the countersunk bolt. As the countersunk bolt is removed from the fixing screw hole and countersunk screw hole, the mold core plate can be pulled out from the mold core insertion port, thus realizing the function of easy mold core replacement. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present utility model;

[0020] Figure 2 This is a front view exploded structural diagram of the left mold frame of this utility model;

[0021] Figure 3 This is a side view of the square frame structure of this utility model;

[0022] Figure 4This is a side view of the hollow plate structure of this utility model;

[0023] Figure 5 This is a side view of the left mold frame structure of this utility model;

[0024] Figure 6 This is a side view of the mold core plate of this utility model.

[0025] In the diagram: 1. Left mold frame; 2. Left mold frame; 3. Mold frame guide rod; 4. Limiting guide rod; 5. Right mold frame; 6. Right template; 7. Main channel; 8. Heat-conducting plate; 9. Square frame; 10. Fin; 11. Drain outlet; 12. First tee connector; 13. First solenoid valve; 14. Second solenoid valve; 15. Hollow plate; 16. Perforated plate; 17. Water outlet; 18. Liquid inlet pipe; 19. Second tee connector; 20. Third solenoid valve; 21. Fourth solenoid valve; 22. Mold core insertion port; 23. Mold core plate; 24. Lens mold groove; 25. Fixing screw eye; 26. Countersunk bolt; 27. Countersunk screw eye. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example: Please refer to Figure 1-6 A precision molding mold for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels includes a left mold frame 1, a left mold frame 2 fixedly connected to the middle position of the right side of the left mold frame 1, mold frame guide rods 3 fixedly connected laterally to the four corners of the right side of the left mold frame 1, limit guide rods 4 fixedly connected to the four corners of the right side of the left mold frame 2, a right mold frame 5 set on the right side of the left mold frame 1, a right template 6 fixedly connected to the left side of the right mold frame 5, a main channel 7 set on the right side of the right template 6, a mold core plate 23 set inside the right side of the left mold frame 2, a lens mold groove 24 opened on the right side of the mold core plate 23, and a multi-layer cooling component set inside the left mold frame 2.

[0028] Please see Figure 1-6The multi-layer cooling channel ultra-thin aspherical optical plastic lens precision molding mold also includes a cooling component. The cooling component includes a square frame 9, which is fixedly connected inside the left mold frame 2. A heat conduction plate 8 is fixedly connected to the right side of the square frame 9. Multiple sets of fins 10 are fixedly connected to the left side of the heat conduction plate 8. A drain port 11 is fixedly connected to the bottom end of the square frame 9. A hollow plate 15 is fixedly connected to the left side of the square frame 9. A perforated plate 16 is fixedly connected to the right side of the hollow plate 15. Multiple sets of water outlet holes 17 are opened inside the perforated plate 16. An inlet pipe 18 is fixedly connected to the bottom end of the hollow plate 15.

[0029] The right side of the heat-conducting plate 8 is attached to the left side of the mold core plate 23. The fins 10 are arranged at equal intervals. The left side of the fins 10 is attached to the right side of the perforated plate 16. The position and range of the fins 10 correspond to the lens mold groove 24. The interiors of the square frame 9 and the drain port 11 are connected. The interiors of the hollow plate 15 and the inlet pipe 18 are connected. The interiors of the hollow plate 15 and the perforated plate 16 are connected. The flow channels are multi-layered, and the cooling is more uniform.

[0030] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the chiller pumps cooling water into the hollow plate 15 through the inlet pipe 18. As the water pressure inside the hollow plate 15 increases, the water flows into the square frame 9 along the perforated plate 16 and the outlet hole 17, spraying the heat-conducting plate 8 and fins 10 to uniformly lower their temperature and fill the square frame 9. The temperature of the mold core plate 23 is transferred to the square frame 9 through the heat-conducting plate 8. The low temperature generated inside the square frame 9 can quickly cool it down. The lens mold groove 24 area inside the mold core plate 23 has the highest temperature. Its temperature is conducted to the square frame 9 through the fins 10 and exchanges heat with the cold water inside the square frame 9. The cold water after heat exchange is discharged from the drain port 11, and the cycle can be repeated.

[0031] A first three-way connector 12 is fixedly connected to the bottom end of the drain port 11. A first solenoid valve 13 is fixedly installed on the right side of the bottom of the first three-way connector 12. A second solenoid valve 14 is fixedly installed on the left side of the bottom of the first three-way connector 12. A second three-way connector 19 is fixedly connected to the bottom end of the inlet pipe 18. A third solenoid valve 20 is fixedly installed on the right side of the bottom of the second three-way connector 19. A fourth solenoid valve 21 is fixedly installed on the left side of the bottom of the second three-way connector 19. The drain port 11 and the first three-way connector 12 are internally connected, and the inlet pipe 18 and the second three-way connector 19 are internally connected, which facilitates switching between hot and cold water and allows cooling and preheating to be carried out simultaneously.

[0032] Specifically, such as Figure 1 and Figure 2As shown, the inlet and return pipes of the chiller unit are connected to the third solenoid valve 20 of the second tee connector 19 and the first solenoid valve 13 of the first tee connector 12. The inlet and return pipes of the hot water unit are connected to the fourth solenoid valve 21 of the second tee connector 19 and the second solenoid valve 14 of the first tee connector 12. By controlling the opening and closing of different solenoid valves, the circulating liquid can be flexibly changed, and cold water can be used for cooling and hot water can be used for preheating.

[0033] A mold core insertion port 22 is provided on the right side of the left mold frame 2. Fixing screw holes 25 are provided at the four corners on the right side of the mold core plate 23. Countersunk screw holes 27 are provided at the four corners on the right side of the left mold frame 2. Countersunk bolts 26 are horizontally inserted into the countersunk screw holes 27. The countersunk bolts 26 pass through the countersunk screw holes 27 and extend into the interior of the fixing screw holes 25. The shape and size of the outside of the mold core plate 23 are compatible with the shape and size of the inside of the mold core insertion port 22. The mold core plate 23 can be moved back and forth along the inside of the mold core insertion port 22, which is convenient for replacing the mold core.

[0034] Specifically, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the mold core plate 23 can be replaced simply by removing the countersunk bolt 26. As the countersunk bolt 26 disengages from the fixing screw hole 25 and the countersunk screw hole 27, the mold core plate 23 can be pulled out from the mold core insertion port 22.

[0035] Working principle: When using this utility model, firstly, under the push of the hydraulic mechanism, the left mold frame 2 and the right mold plate 6 close the mold. The liquefied optical plastic enters between the left mold frame 2 and the right mold plate 6 along the main channel 7, quickly filling the lens mold groove 24 in the mold core plate 23. After cooling, it can be opened and removed. During the cooling process, the chiller pumps cooling water into the hollow plate 15 through the liquid inlet pipe 18. As the water pressure in the hollow plate 15 increases, the water flows into the square frame 9 along the perforated plate 16 and the water outlet 17, spraying the heat-conducting plate 8 and the fins 10 to lower their temperature evenly and fill the square frame 9. The temperature of the mold core plate 23 is transferred to the square frame 9 through the heat-conducting plate 8. The low temperature generated in the square frame 9 can quickly cool it down. The lens mold groove 24 area in the mold core plate 23 has the highest temperature. Its temperature is conducted to the square frame 9 through the fins 10 and exchanges heat with the cold water in the square frame 9. The cold water after heat exchange is discharged from the drain port 11, and the cycle is repeated. The inlet and return pipes of the chiller unit are connected to the third solenoid valve 20 of the second tee connector 19 and the first solenoid valve 13 of the first tee connector 12. The inlet and return pipes of the hot water unit are connected to the fourth solenoid valve 21 of the second tee connector 19 and the second solenoid valve 14 of the first tee connector 12. By controlling the opening and closing of different solenoid valves, the circulating liquid can be flexibly changed, allowing for cooling with cold water and preheating with hot water. Replacing the mold core plate 23 only requires removing the countersunk bolt 26. As the countersunk bolt 26 disengages from the fixing screw hole 25 and countersunk screw hole 27, the mold core plate 23 can be pulled out from the mold core insertion port 22.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A precision molding die for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels, comprising a left mold base (1), characterized in that: A left mold frame (2) is fixedly connected to the middle position on the right side of the left mold frame (1). Mold frame guide rods (3) are fixedly connected horizontally at the four corners on the right side of the left mold frame (1). Limiting guide rods (4) are fixedly connected at the four corners on the right side of the left mold frame (2). A right mold frame (5) is provided on the right side of the left mold frame (1). A right template (6) is fixedly connected to the left side of the right mold frame (5). A main channel (7) is provided on the right side of the right template (6). A mold core plate (23) is provided inside the right side of the left mold frame (2). A lens mold groove (24) is opened on the right side of the mold core plate (23). A multi-layer cooling cooling component is provided inside the left mold frame (2). The cooling component includes a square frame (9), which is fixedly connected inside the left mold frame (2). A heat-conducting plate (8) is fixedly connected to the right side of the square frame (9). Multiple sets of fins (10) are fixedly connected to the left side of the heat-conducting plate (8). A drain port (11) is fixedly connected to the bottom end of the square frame (9). A hollow plate (15) is fixedly connected to the left side of the square frame (9). A perforated plate (16) is fixedly connected to the right side of the hollow plate (15). Multiple sets of water outlet holes (17) are opened inside the perforated plate (16). An inlet pipe (18) is fixedly connected to the bottom end of the hollow plate (15).

2. The precision molding die for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels according to claim 1, characterized in that: The right side of the heat-conducting plate (8) and the left side of the mold core plate (23) are attached together, and the fins (10) are arranged at equal intervals.

3. The precision molding die for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels according to claim 1, characterized in that: The left side of the fin (10) and the right side of the perforated plate (16) are attached to each other, and the position and range of the fin (10) correspond to the lens mold groove (24).

4. The precision molding die for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels according to claim 1, characterized in that: The interiors of the square frame (9) and the drain port (11) are connected, the interiors of the hollow plate (15) and the inlet pipe (18) are connected, and the interiors of the hollow plate (15) and the perforated plate (16) are connected.

5. The precision molding die for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels according to claim 1, characterized in that: The bottom end of the drain port (11) is fixedly connected to a first three-way connector (12), a first solenoid valve (13) is fixedly installed on the right side of the bottom of the first three-way connector (12), a second solenoid valve (14) is fixedly installed on the left side of the bottom of the first three-way connector (12), the bottom end of the inlet pipe (18) is fixedly connected to a second three-way connector (19), a third solenoid valve (20) is fixedly installed on the right side of the bottom of the second three-way connector (19), and a fourth solenoid valve (21) is fixedly installed on the left side of the bottom of the second three-way connector (19).

6. The precision molding die for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels according to claim 5, characterized in that: The internal connections of the drain port (11) and the first tee connector (12) are connected, and the internal connections of the inlet pipe (18) and the second tee connector (19) are connected.

7. The precision molding die for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels according to claim 1, characterized in that: The left mold frame (2) has a mold core insertion port (22) on the right side. The four corners on the right side of the mold core plate (23) are respectively provided with fixing screw holes (25). The four corners on the right side of the left mold frame (2) are respectively provided with countersunk screw holes (27). Countersunk bolts (26) are horizontally inserted into the inside of the countersunk screw holes (27).

8. The precision molding die for ultra-thin aspherical optical plastic lenses with multi-layer cooling channels according to claim 7, characterized in that: The countersunk bolt (26) passes through the countersunk screw hole (27) and extends into the interior of the fixing screw hole (25). The shape and size of the outside of the mold core plate (23) are adapted to the shape and size of the inside of the mold core socket (22). The mold core plate (23) can be moved back and forth along the inside of the mold core socket (22).

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