A cooling structure of an optical window mold

Abstract

The application discloses a cooling structure of an optical window mold, comprising: a mold core with a first surface and a second surface opposite to each other, a molding surface is arranged on the first surface; a plurality of cooling grooves are arranged on the mold core from the second surface to the first surface, the minimum distance from any position of the bottom surface of any cooling groove to the molding surface is equal; a heat conduction block is arranged in the cooling groove, one end of the heat conduction block towards the bottom surface of the cooling groove has a profiled surface, and a gap is formed between the profiled surface and the bottom surface of the cooling groove to form a first cooling channel. In the application, the minimum distance from each position of the bottom surface of the cooling groove to the molding surface is equal, and then the distance from each position of the molding surface to the first cooling channel is equal, so that the temperature of each position of the molding surface is more uniform, and the workpiece will not deform due to large temperature difference.

Description

Technical Field

[0001] The present invention relates to the technical field of mold forming, and in particular to a conformal cooling structure of an optical window mold. Background Art

[0002] During the mold forming process, the mold needs to be cooled. Generally, a cooling channel is set on the mold, and coolant is introduced into the cooling channel. The coolant flows and cools the mold.

[0003] However, when forming workpieces with large curvatures, such as optical windows, the large curvature causes large differences in the distances between various positions on the forming surface and the cooling channels, which in turn causes large temperature differences at various positions on the forming surface, ultimately leading to deformation of the workpiece. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a conformal cooling structure for an optical window mold, which is used to solve the problem of workpiece deformation caused by large temperature differences at various positions on the molding surface in the prior art.

[0005] The technical solution adopted by the present invention to solve the technical problem is a conformal cooling structure of an optical window mold, comprising:

[0006] The mold core has a first surface and a second surface facing each other, and a molding surface is formed on the first surface; the mold core has a plurality of cooling grooves formed from the second surface toward the first surface, and the minimum distance from any position on the bottom surface of any cooling groove to the molding surface is equal;

[0007] A heat conducting block is arranged in the cooling groove. One end of the heat conducting block facing the bottom surface of the cooling groove has a conforming surface. A gap is formed between the conforming surface and the bottom surface of the cooling groove to form a first cooling channel.

[0008] Furthermore, the curvature of the conformal surface is consistent with the curvature of the bottom surface of the cooling groove.

[0009] Furthermore, the plurality of cooling grooves are arranged along the length direction of the forming surface, and the height variation curvature of the bottom surfaces of the plurality of cooling grooves is consistent with the curvature variation of the forming surface in the length direction.

[0010] Furthermore, the area where the bottom surface of the cooling groove is projected onto the molding surface along the height direction is the projection area, and the curvature of the bottom surface of any cooling groove is consistent with the curvature of the corresponding projection area on the molding surface.

[0011] Furthermore, the heat conducting block further has two first side surfaces that are opposite to each other, and two second side surfaces that are opposite to each other;

[0012] The cooling trough has two first side walls opposite to each other, and two second side walls opposite to each other;

[0013] Each of the first side surfaces is in contact with one of the first side walls. A gap is provided between each of the second side surfaces and one of the second side walls to form two second cooling channels, and the two cooling channels are respectively connected to two ends of the first cooling channel.

[0014] Furthermore, the second surface is provided with a positioning notch, and the first side surface is provided with a positioning protrusion, and the positioning protrusion extends into the positioning notch.

[0015] Furthermore, one end of the heat conducting block away from the conformal surface is flush with the second surface.

[0016] Furthermore, it also includes a mold core frame, which is connected to the mold core with bolts, and the mold core frame has a mounting surface, and the mounting surface is connected to the second surface;

[0017] The mold core frame is provided with a third cooling channel, and the third cooling channel is communicated with the second cooling channel.

[0018] Furthermore, a sealing groove is provided on the mounting surface at the periphery of the third cooling channel, and the sealing groove is provided with a sealing ring.

[0019] Furthermore, a positioning bolt is provided. A positioning hole is opened on the mold core. The positioning bolt passes through the positioning hole and is threadedly connected to the mold core frame.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] A cooling trough is provided, and a heat conducting block is placed within the trough, forming a first cooling channel between the bottom of the trough and the forming surface. The minimum distance from each location on the bottom of the cooling trough to the forming surface is equal, which in turn ensures that each location on the forming surface is at an equal distance from the first cooling channel. This ultimately results in a more uniform temperature across the forming surface, preventing deformation of the workpiece due to large temperature differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An exploded view of the conformal cooling structure in the embodiment;

[0023] Figure 2 A schematic structural diagram of a mold from one perspective in an embodiment;

[0024] Figure 3 A schematic structural diagram of the mold core from another perspective in the embodiment;

[0025] Figure 4Schematic diagram of the first cooling channel, the second cooling channel and the third cooling channel in the embodiment;

[0026] Figure 5 Schematic diagram of the structure of the mold frame in the embodiment;

[0027] Figure 6 Schematic diagram of the structure of the heat conducting block in the embodiment;

[0028] In the picture:

[0029] 100, mold core; 101, first surface; 102, molding surface; 103, second surface; 110, positioning bolt; 120, cooling groove; 121, positioning notch;

[0030] 200, mold frame; 210, mounting surface; 220, sealing groove;

[0031] 300, heat conducting block; 310, positioning protrusion; 320, conforming surface;

[0032] 400, sealing ring;

[0033] 500, first cooling channel;

[0034] 600, second cooling channel;

[0035] 700. The third cooling channel. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0037] Please refer to Figures 1-6 The present invention discloses a conformal cooling structure for an optical window mold, comprising:

[0038] The mold core 100 has a first surface 101 and a second surface 103 that are opposite to each other. A molding surface 102 is defined on the first surface 101. The mold core 100 has a plurality of cooling grooves 120 extending from the second surface 103 toward the first surface 101. The minimum distance from any position on the bottom surface of any cooling groove 120 to the molding surface 102 is the same.

[0039] A heat conducting block 300 is disposed in the cooling groove 120 . The heat conducting block 300 has a conforming surface 320 at one end facing the bottom of the cooling groove 120 . A gap is formed between the conforming surface 320 and the bottom of the cooling groove 120 to form a first cooling channel 500 .

[0040] Specifically, the present application provides a cooling trough 120, and a heat conducting block 300 is disposed within the cooling trough 120, so that a first cooling channel 500 is formed between the bottom surface of the cooling trough 120 and the conforming surface 320. Furthermore, the minimum distance from each position of the bottom surface of the cooling trough 120 to the forming surface 102 is equal, thereby ensuring that each position of the forming surface 102 is at an equal distance from the first cooling channel 500. Ultimately, this ensures a more uniform temperature at each position of the forming surface 102, preventing deformation of the workpiece due to large temperature differences.

[0041] The heat conducting block 300 is made of beryllium copper and has good heat conducting and water insulating effects.

[0042] Furthermore, the curvature of the conformal surface 320 is consistent with the curvature of the bottom surface of the cooling groove 120 .

[0043] The curvature of the conforming surface 320 is consistent with the curvature of the bottom surface of the cooling groove 120, so that the width of the first cooling channel 500 is equal everywhere, thereby making the flow rate of the coolant at each position equal, and further making the temperature at each position on the molding surface 102 more uniform.

[0044] Furthermore, the plurality of cooling grooves 120 are arranged along the length direction of the molding surface 102 , and the height variation curvature of the bottom surfaces of the plurality of cooling grooves 120 is consistent with the curvature variation of the molding surface 102 in the length direction.

[0045] Specifically, since the molding surface 102 is curved and the heights of different positions are different, the heights of the multiple cooling grooves 120 are also required to be different, thereby ensuring that the distance (minimum distance) from the bottom surface of each cooling groove 120 to the corresponding position of the molding surface 102 is the same, so that the temperature of each position along the length direction of the molding surface 102 can be more uniform.

[0046] Furthermore, the area where the bottom surface of the cooling groove 120 is projected onto the molding surface 102 along the height direction is the projection area, and the curvature of the bottom surface of any cooling groove 120 is consistent with the curvature of the corresponding projection area on the molding surface 102.

[0047] Specifically, the curvature of the projection area on the molding surface 102 is consistent with the curvature of the bottom surface of the cooling groove 120 , so that the temperature of each position along the width direction of the molding surface 102 can be more uniform.

[0048] Furthermore, the heat conducting block 300 further has two first side surfaces that are opposite to each other, and two second side surfaces that are opposite to each other;

[0049] The cooling tank 120 has two first side walls opposite to each other, and two second side walls opposite to each other;

[0050] Each of the first side surfaces is in contact with one of the first side walls. A gap is formed between each of the second side surfaces and one of the second side walls to form two second cooling channels 600 , and the two cooling channels are respectively connected to both ends of the first cooling channel 500 .

[0051] Specifically, a first cooling channel 500 is formed at the upper end of the heat-conducting block 300, and a second cooling channel 600 is formed on both sides. The two second cooling channels 600 are respectively connected to the two ends of the first cooling channel 500. The first cooling channel 500 is arranged in accordance with the molding surface 102, and the second cooling channel 600 is arranged along the height direction of the mold core 100, thereby making the temperature of the mold core 100 at various positions in the height direction more uniform.

[0052] Furthermore, the second surface 103 is provided with a positioning notch 121 , and the first side surface is provided with a positioning protrusion 310 , and the positioning protrusion 310 extends into the positioning notch 121 .

[0053] Positioning notches 121 and positioning protrusions 310 are provided to ensure that each heat conducting block 300 is located at the same position of the cooling groove 120, thereby ensuring that the widths of the plurality of first cooling channels 500 and the plurality of second cooling channels 600 are consistent, so that the flow rate of the coolant at each position is the same.

[0054] Furthermore, one end of the heat conducting block 300 away from the conformal surface 320 is flush with the second surface 103 .

[0055] Furthermore, it further comprises a mold core frame 200, which is bolted to the mold core 100, and the mold core frame 200 has a mounting surface 210, and the mounting surface 210 is connected to the second surface 103;

[0056] The core mold frame 200 is provided with a third cooling channel 700 , and the third cooling channel 700 is communicated with the second cooling channel 600 .

[0057] Specifically, one end of the third cooling channel 700 is connected to the second cooling channel 600 , and the other end is connected to a water inlet or a water outlet.

[0058] It should be noted that if Figure 4 The first cooling channel 500, the second cooling channel 600 and the second cooling channel 600 are only depicted for a more straightforward viewing of their shapes. In the actual structure, they are just gaps between components for the circulation of coolant, and there are no structures such as water pipes.

[0059] Furthermore, a sealing groove 220 is provided on the mounting surface 210 at the periphery of the third cooling channel 700 , and a sealing ring 400 is provided in the sealing groove 220 .

[0060] The sealing ring 400 can improve the sealing performance of the connection between the third cooling channel 700 and the second cooling channel 600, thereby preventing leakage of the coolant.

[0061] Furthermore, a positioning bolt 110 is provided. A positioning hole is opened on the mold core 100 , and the positioning bolt 110 passes through the positioning hole and is threadedly connected to the mold core frame 200 .

[0062] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0063] In addition, in the present invention, descriptions such as "first," "second," and "one" are for descriptive purposes only and should not be understood to indicate or imply their relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0064] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0065] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A conformal cooling structure for an optical window mold, characterized in that: include: The mold core has a first surface and a second surface facing each other, and a molding surface is formed on the first surface; the mold core has a plurality of cooling grooves formed from the second surface toward the first surface, and the minimum distance from any position on the bottom surface of any cooling groove to the molding surface is equal; A heat conducting block is provided in the cooling groove, wherein one end of the heat conducting block facing the bottom surface of the cooling groove has a conforming surface, and a gap is provided between the conforming surface and the bottom surface of the cooling groove to form a first cooling channel; The curvature of the conformal surface is consistent with the curvature of the bottom surface of the cooling groove; The plurality of cooling grooves are arranged along the longitudinal direction of the forming surface, and the height variation curvature of the bottom surfaces of the plurality of cooling grooves is consistent with the curvature variation of the forming surface in the longitudinal direction; The heat conducting block further comprises two first side surfaces which are opposite to each other, and two second side surfaces which are opposite to each other; The cooling trough has two first side walls opposite to each other, and two second side walls opposite to each other; Each of the first side surfaces is in contact with one of the first side walls, and a gap is formed between each of the second side surfaces and one of the second side walls to form a second cooling channel, and the two second cooling channels are respectively connected to two ends of the first cooling channel; It also includes a mold core frame, which is connected to the mold core with bolts, and the mold core frame has a mounting surface, and the mounting surface is connected to the second surface; The mold core frame is provided with a third cooling channel, and the third cooling channel is communicated with the second cooling channel.

2. The conformal cooling structure of an optical window mold according to claim 1, characterized in that: The area where the bottom surface of the cooling groove is projected onto the molding surface along the height direction is the projection area, and the curvature of the bottom surface of any cooling groove is consistent with the curvature of the corresponding projection area on the molding surface.

3. The conformal cooling structure of an optical window mold according to claim 1, characterized in that: The second surface is provided with a positioning notch, and the first side surface is provided with a positioning protrusion, and the positioning protrusion extends into the positioning notch.

4. The conformal cooling structure of an optical window mold according to claim 1, characterized in that: One end of the heat conducting block away from the conformal surface is flush with the second surface.

5. The conformal cooling structure of an optical window mold according to claim 1, characterized in that: A sealing groove is provided on the mounting surface at the outer periphery of the third cooling channel, and the sealing groove is provided with a sealing ring.

6. The conformal cooling structure of an optical window mold according to claim 1, characterized in that: A positioning bolt is also provided. A positioning hole is opened on the mold core. The positioning bolt passes through the positioning hole and is threadedly connected to the mold core frame.

Images