Chalcogenide glass extrusion forming die
By designing the overflow groove of the sleeve and the overflow edge of the sleeve ring in the sulfur-based glass extrusion molding mold, the problem of mold gap adhesion is solved, and the easy disassembly of the mold and the improvement of production efficiency is achieved.
Patent Information
- Application Number
- CN202420503642.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-03-14
AI Technical Summary
After processing of existing sulfur-based glass extrusion molds, the gap between the mold sleeve, collar and extrusion head is easily filled and stuck by sulfur-based glass materials, resulting in difficulty in dismantling the mold and reducing production efficiency and service life of the mold.
A sulfur-based glass extrusion molding mold including a die sleeve, a sleeve, a sleeve and a cushion is designed. Through the cooperation of the overflow groove of the sleeve and the overflow edge of the sleeve, the sulfur-based glass material is prevented from overflowing and adhesion, so that the mold is easily disassembled.
It realizes easy disassembly of the mold, improves the production efficiency of extrusion forming and the service life of the mold, and does not need to remove the mold sleeve from the equipment, shortens the production cycle and improves the production capacity of the equipment.
Smart Images
Figure CN222593681U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of glass extrusion molding, and more particularly to a chalcogenide glass extrusion molding die. Background Art
[0002] Chalcogenide glass materials have excellent infrared transmittance, low thermo-optical coefficient, good thermal stability and chemical stability. Currently, chalcogenide glass lenses have been widely used in infrared thermal imaging systems, and have a wide range of applications in military and civilian fields such as battlefield reconnaissance, vehicle navigation, security monitoring, rapid temperature measurement for medical diagnosis, and infrared night vision equipment.
[0003] In the civilian field, the diameter of the chalcogenide glass lens used is generally 10-40mm, and the lens of this diameter needs to be processed using a chalcogenide glass rod of the corresponding diameter. At present, small-diameter chalcogenide glass rods are mainly prepared by extruding large-diameter chalcogenide glass rods for secondary molding. The existing extrusion molding die mainly consists of a die sleeve, a collar, and an extrusion head. After the extrusion process, the gaps between the die sleeve, the collar, and the extrusion head will be filled with chalcogenide glass material and adhered, making it very difficult to disassemble and separate the die sleeve, the collar, and the extrusion head, which greatly reduces the extrusion molding production efficiency and the service life of the extrusion molding die. Utility Model Content
[0004] In view of the problems existing in the background technology, an object of the present disclosure is to provide a chalcogenide glass extrusion molding die that is easy to disassemble.
[0005] Another object of the present disclosure is to provide a chalcogenide glass extrusion molding die, which can increase the service life of the extrusion molding die.
[0006] Another object of the present disclosure is to provide a chalcogenide glass extrusion molding die, which can improve the extrusion molding production efficiency.
[0007] Thus, a chalcogenide glass extrusion molding die is provided, which comprises a die sleeve, a sleeve ring, a sleeve and a pressing block; the die sleeve is used to be fixed on an extrusion molding device and to be positioned in a heater of the extrusion molding device, the die sleeve has a peripheral wall and a bottom wall, the peripheral wall and the bottom wall enclose a receiving space, the receiving space has an upward upper opening, the bottom wall has a through lower opening, and the lower opening is smaller than the upper opening; the sleeve ring is used to be inserted into the die sleeve through the upper opening of the die sleeve and supported on the bottom wall, the sleeve ring has a cylindrical flow channel and a stop edge, the cylindrical flow channel is located in the middle of the sleeve ring and passes through the sleeve ring in the up and down directions, and the cylindrical flow channel is used to form a small opening The sleeve is open at the top and bottom, and the sleeve is used to be inserted into the mold sleeve through the upper opening of the mold sleeve and supported on the ring. The sleeve has a stop groove, which is annular and used to be assembled with the stop groove of the ring. The inner diameter of the sleeve is larger than the diameter of the cylindrical flow channel of the ring. The sleeve and the ring are used together to accommodate the large-diameter chalcogenide glass rod; the pressing block is used to be inserted into the sleeve, and the pressing block is used to abut against the large-diameter chalcogenide glass rod from above and to receive the downward pressure of extrusion molding.
[0008] The beneficial effects of the present disclosure are as follows.
[0009] In the chalcogenide glass extrusion molding die disclosed in the present invention, the overflow groove of the sleeve and the overflow edge of the ring that can be assembled together are used to prevent overflow from the gap between the sleeve and the ring during the softening and extrusion process of the large-diameter chalcogenide glass rod, causing adhesion between the mold sleeve and the sleeve, and between the mold sleeve and the ring, thereby making it difficult to separate the sleeve and the ring from the mold sleeve.
[0010] In the sulfur-based glass extrusion molding die disclosed in the present invention, the cooperation between the overflow stop groove 1 of the sleeve and the overflow stop edge of the ring can make the sleeve, the ring and the pressing block easily separated from the mold sleeve (that is, the mold is easy to disassemble), thereby improving the extrusion molding production efficiency and the service life of the extrusion molding die.
[0011] In addition, there is no need to remove the die sleeve from the extrusion molding equipment. After one set of sleeves, rings and pressing blocks are completed for extrusion molding, another set of sleeves, rings and pressing blocks can be directly replaced to continue the extrusion molding production, thereby improving the extrusion molding production efficiency, shortening the production cycle of the extrusion molding equipment, and increasing the production capacity of the extrusion molding equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is an assembly cross-sectional view of a chalcogenide glass extrusion molding die according to the present disclosure.
[0013] Figure 2 yes Figure 1 An exploded cross-sectional view of the mold sleeve, ring and sleeve, wherein the pressure block and ejector pin are not shown.
[0014] Figure 3 yes Figure 1 Front view of the pressing block.
[0015] Figure 4 yes Figure 1 Top view of the compact.
[0016] Figure 5 yes Figure 1 A schematic three-dimensional diagram of a pressing block.
[0017] The reference numerals are described as follows:
[0018] 100 Chalcogenide Glass Extrusion Molding Die 3 Sleeves
[0019] 1 die sleeve 31 overflow groove
[0020] 11 peripheral wall 32 inner circumferential surface
[0021] 12 bottom wall 33 outer circumferential surface
[0022] 121 lower opening 34 lower end surface
[0023] 13 Accommodation space 35 Notch
[0024] 131 upper opening 4 block
[0025] 2 sets of rings 41 extrusion head
[0026] 21 cylindrical flow channel 42 intermediate column
[0027] 22 overflow edge 43 guide edge
[0028] 23 upper surface 44 groove
[0029] 24 drainage slope 5 top rod
[0030] 25 circumference 200 large diameter chalcogenide glass rod
[0031] 26 Lower surface D1 up and down direction DETAILED DESCRIPTION
[0032] The accompanying drawings show embodiments of the present disclosure, and it will be understood that the disclosed embodiments are merely examples of the present disclosure, and the present disclosure can be implemented in various forms. Therefore, the specific details disclosed herein should not be interpreted as limiting, but merely as the basis for the claims and as a representative basis for teaching ordinary technicians in the field to implement the present disclosure in various ways.
[0033] Reference Figure 1 and Figure 2 According to the present disclosure, the chalcogenide glass extrusion molding die 100 includes a die sleeve 1, a collar 2, a sleeve 3 and a pressing block 4.
[0034] The mold sleeve 1 is used to be fixed on an extrusion molding device (not shown) and to be positioned in a heater (not shown) of the extrusion molding device. The mold sleeve 1 has a peripheral wall 11 and a bottom wall 12. The peripheral wall 11 and the bottom wall 12 form a receiving space 13. The receiving space 13 has an upward upper opening 131. The bottom wall 12 has a through lower opening 121. The lower opening 121 is smaller than the upper opening 131.
[0035] The ring 2 is used to be inserted into the mold sleeve 1 through the upper opening 131 of the mold sleeve 1 and supported on the bottom wall 12. The ring 2 has a cylindrical flow channel 21 and a stop-flow rib 22. The cylindrical flow channel 21 is located in the middle of the ring 2 and penetrates the ring 2 along the up-down direction D1. The cylindrical flow channel 21 is used to form a small-diameter chalcogenide glass rod (not shown). The diameter of the cylindrical flow channel 21 is smaller than the diameter of the lower opening 121 of the bottom wall 12 of the mold sleeve 1. The stop-flow rib 22 is located at the periphery of the ring 2 and protrudes upward from the upper surface 23 of the ring 2 in a ring shape.
[0036] The sleeve 3 is open at the top and bottom. The sleeve 3 is used to be inserted into the mold sleeve 1 through the upper opening 131 of the mold sleeve 1 and supported on the ring 2. The sleeve 3 has a stop groove 31. The stop groove 31 is annular and is used to be assembled with the stop edge 22 of the ring 2. The inner diameter of the sleeve 3 is larger than the diameter of the cylindrical flow channel 21 of the ring 2. The sleeve 3 and the ring 2 are used together to accommodate a large-diameter chalcogenide glass rod 200.
[0037] The pressing block 4 is used to be inserted into the sleeve 3, and the pressing block 4 is used to abut against the large-diameter chalcogenide glass rod 200 from above and to receive the downward pressure of the extrusion molding.
[0038] In the chalcogenide glass extrusion molding die 100 disclosed in the present invention, the overflow groove 31 of the sleeve 3 and the overflow edge 22 of the ring 2 that can be assembled together are used to prevent the large-diameter chalcogenide glass rod 200 from overflowing from the gap between the sleeve 3 and the ring 2 during the softening and extrusion process, causing adhesion between the mold sleeve 1 and the sleeve 3, and between the mold sleeve 1 and the ring 2, thereby making it difficult to separate the sleeve 3 and the ring 2 from the mold sleeve 1.
[0039] In an exemplary assembly method, the mold sleeve 1 is first fixed on the extrusion molding device and positioned in the heater of the extrusion molding device, and then the ring 2 is inserted into the mold sleeve 1 through the upper opening 131 of the mold sleeve 1 and supported on the bottom wall 12, and then the sleeve 3 is inserted into the mold sleeve 1 through the upper opening 131 of the mold sleeve 1 and supported on the ring 2, and then the large-diameter chalcogenide glass rod 200 is inserted into the sleeve 3 and supported on the ring 2, and then the pressing block 4 is inserted into the sleeve 3 and abuts against the large-diameter chalcogenide glass rod 200 from above, thereby realizing the assembly of the chalcogenide glass extrusion molding mold 100 and the loading of the large-diameter chalcogenide glass rod 200, and finally a mechanism (such as the push rod 5) connected to the extrusion molding device that provides the downward pressure of the extrusion molding is inserted into the sleeve 3 and abuts against the pressing block 4 from above.
[0040] After the chalcogenide glass extrusion molding die 100 is assembled and loaded with the large-diameter chalcogenide glass rod 200 and fixed on the extrusion molding equipment, the chalcogenide glass extrusion molding process can be performed. The temperature control system of the extrusion molding equipment controls the temperature process of the chalcogenide glass extrusion molding die 100. For example, when the material of the chalcogenide glass is As2Se3, the temperature control system of the extrusion molding equipment controls the heater to heat the chalcogenide glass extrusion molding die to 100 to 300°C and keep it warm. After keeping warm for 2 hours to ensure that the large-diameter chalcogenide glass rod 200 made of As2Se3 is softened, the mechanism (such as the push rod 5) that provides the downward pressure for the extrusion molding is controlled to push the pressing block 4 toward the ring 2 at a feed speed of 5 mm / min. The large-diameter chalcogenide glass rod 200 made of As2Se3 is extruded through the cylindrical flow channel 21 of the ring 2 to be extruded into a small-diameter chalcogenide glass rod made of As2Se3. The extruded small-diameter chalcogenide glass rod made of As2Se3 is cut and put into an annealing furnace for annealing to obtain a small-diameter chalcogenide glass rod product made of As2Se3.
[0041] After the chalcogenide glass extrusion molding process is completed, the extrusion molding equipment controls the mechanism (such as the push rod 5) that provides the downward pressure for the extrusion molding to return to the origin (separate from the mold sleeve 1), and there is no need to remove the mold sleeve 1 from the extrusion molding equipment. The sleeve 3, the ring 2 and the pressing block 4 are taken out together, and then the pressing block 4 is tapped lightly in the direction of the ring 2 with a rod (such as a copper rod) to separate the pressing block 4 and the ring 2 from the sleeve 3, thereby realizing the separation of the sleeve 3, the ring 2 and the pressing block 4 and subsequent cleaning.
[0042] Based on the above, in the sulfur-based glass extrusion molding die 100 disclosed in the present invention, through the cooperation of the stop-flow groove 31 of the sleeve 3 and the stop-flow edge 22 of the ring 2, the sleeve 3, the ring 2 and the pressing block 4 can be easily separated from the mold sleeve 1 (that is, the mold is easy to disassemble), thereby improving the extrusion molding production efficiency and the service life of the extrusion molding die.
[0043] In addition, there is no need to remove the die sleeve 1 from the extrusion molding equipment. After one set of sleeve 3, ring 2 and pressing block 4 is completed for extrusion molding, another set of sleeve 3, ring 2 and pressing block 4 can be directly replaced to continue the extrusion molding production, thereby improving the extrusion molding production efficiency, shortening the production cycle of the extrusion molding equipment, and increasing the production capacity of the extrusion molding equipment.
[0044] like Figure 1 As shown, in one example, the cylindrical flow channel 21 is located at the center of the collar 2 .
[0045] like Figure 1 and Figure 2 As shown, the collar 2 may also have a drainage slope 24, which is recessed downward from the upper surface 23 toward the cylindrical flow channel 21. The drainage slope 24 enables the softened large-diameter chalcogenide glass rod 200 to flow into the cylindrical flow channel 21 of the collar 2 along the drainage slope 24.
[0046] Reference Figure 2 In one example, the sleeve 3 has an inner circumferential surface 32, an outer circumferential surface 33, a lower end surface 34 and a notch 35. The outer circumferential surface 33 of the sleeve 3 is used to fit with the peripheral wall 11 of the mold sleeve 1. The notch 35 is located at the lower end of the sleeve 3 and is surrounded by the inner circumferential surface 32, the outer circumferential surface 33 and the lower end surface 34. The overflow stop groove 31 is concave upward from the top of the notch 35 between the inner circumferential surface 32 and the outer circumferential surface 33. The notch 35 is matched with the outer circumferential surface 25, the overflow stop edge 22 and the upper surface 23 of the collar 2 in a concave-convex manner.
[0047] In one example, the overflow groove 31 of the sleeve 3 and the overflow ridge 22 of the collar 2 can be assembled by interference fit, but the interference fit should be such that the two can be disassembled.
[0048] like Figure 1 As shown, in one example, the lower end surface 34 of the sleeve 3 is flush with the lower surface 26 of the collar 2 and is used to be supported together on the bottom wall 12 of the mold sleeve 1. As a result, the structural stability of the overflow stop groove 31 of the sleeve 3 and the overflow stop edge 22 of the collar 2 assembled together can be enhanced, thereby enhancing the aforementioned effect of preventing the large-diameter chalcogenide glass rod 200 from overflowing from the gap between the sleeve 3 and the collar 2 during the softening and extrusion process.
[0049] Reference Figure 1 as well as Figures 3 to 5In one example, the pressing block 4 has an extrusion head 41, an intermediate column 42, a plurality of guide ribs 43, and a plurality of grooves 44. The extrusion head 41 is used to abut against the large-diameter chalcogenide glass rod 200 from above and to fit with the inner circumferential surface 32 of the sleeve 3. The intermediate column 42 extends upward from the extrusion head 41, and the intermediate column 42 is used to receive the downward pressure of the extrusion molding (the intermediate column 42 is abutted from above by a mechanism (such as a push rod 5) that provides the downward pressure of the extrusion molding). A plurality of guide ribs 43 are arranged at intervals around the intermediate column 42, are connected to the intermediate column 42 in the radial direction, and are connected to the extrusion head 41 at the bottom in the up-down direction D1, and the plurality of guide ribs 43 are used to fit with the inner circumferential surface 32 of the sleeve 3. Each groove 44 is formed between adjacent guide ribs 43 and the extrusion head 41 and the intermediate column 42.
[0050] Compared with the case where the pressing block 4 is a single cylindrical shape with equal diameter, the provision of multiple guide edges 43 and grooves 44 reduces the contact area between the pressing block 4 and the inner circumferential surface 32 of the sleeve 3, which reduces the friction between the pressing block 4 and the inner circumferential surface 32 of the sleeve 3 during the extrusion process of the large-diameter chalcogenide glass rod 200 on the one hand, and reduces the gap between the pressing block 4 and the inner circumferential surface 32 of the sleeve 3 on the other hand, thereby reducing the area where the softened large-diameter chalcogenide glass rod 200 overflows and adheres to the inner circumferential surface 32 of the sleeve 3 during the extrusion process of the large-diameter chalcogenide glass rod 200, thereby making it easier to separate the pressing block 4 from the sleeve 3.
[0051] In addition, the contact between the multiple guide edges 43 and the inner circumferential surface 32 of the sleeve 3 can ensure the posture of the extrusion head 41 during the extrusion process, so that the bottom surface of the extrusion head 41 is perpendicular to the up and down direction D1, that is, the downward pressure of the extrusion molding is perpendicular to the bottom surface of the extrusion head 41, thereby making the downward pressure of the extrusion molding evenly applied to the softened large-diameter chalcogenide glass rod 200.
[0052] In one example, a plurality of guide edges 43 are arranged at equal intervals. Figure 4 As shown, the plurality of guide edges 43 are four guide edges 43. Of course, three or more than four guide edges 43 may be used.
[0053] like Figure 5 As shown, the plurality of guide edges 43 are flush with the middle column 42 at the top. This can increase the pressure area of the mechanism (such as the ejector rod 5) that provides the downward pressure of the extrusion molding, so that the downward pressure applied by the extrusion molding can be more evenly transmitted to the extrusion head 41.
[0054] like Figure 1As shown, in one example, the chalcogenide glass extrusion molding die 100 further includes a push rod 5; the push rod 5 is used to connect the extrusion molding equipment and provide downward pressure for extrusion molding, and the push rod 5 is used to be inserted into the sleeve 3, and the push rod 5 is used to press against the pressing block 4 from above to apply pressure to the pressing block 4 when the large-diameter chalcogenide glass rod 200 is extruded into the cylindrical flow channel 21 to form a small-diameter chalcogenide glass rod. Further, the push rod 5 is a cylinder with a constant diameter.
[0055] The above detailed description is used to describe multiple exemplary embodiments, but this document is not intended to be limited to the explicitly disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein can be combined together to form multiple additional combinations that are not shown for the sake of simplicity.
Claims
1. A chalcogenide glass extrusion molding die, characterized in that: The chalcogenide glass extrusion molding die (100) comprises a die sleeve (1), a sleeve ring (2), a sleeve (3) and a pressing block (4); The mold sleeve (1) is used to be fixed on an extrusion molding device and to be positioned in a heater of the extrusion molding device. The mold sleeve (1) comprises a peripheral wall (11) and a bottom wall (12). The peripheral wall (11) and the bottom wall (12) enclose a receiving space (13). The receiving space (13) comprises an upper opening (131) facing upward. The bottom wall (12) comprises a through lower opening (121). The lower opening (121) is smaller than the upper opening (131). The collar (2) is used to be inserted into the mold sleeve (1) through the upper opening (131) of the mold sleeve (1) and supported on the bottom wall (12). The collar (2) has a cylindrical flow channel (21) and a stop edge (22). The cylindrical flow channel (21) is located in the middle of the collar (2) and penetrates the collar (2) along the up-down direction (D1). The cylindrical flow channel (21) is used to form a small-diameter chalcogenide glass rod. The diameter of the cylindrical flow channel (21) is smaller than the diameter of the lower opening (121) of the bottom wall (12) of the mold sleeve (1). The stop edge (22) is located at the periphery of the collar (2) and protrudes upward from the upper surface (23) of the collar (2) in an annular shape. The sleeve (3) is open at the top and bottom. The sleeve (3) is used to be inserted into the mold sleeve (1) through the upper opening (131) of the mold sleeve (1) and supported on the collar (2). The sleeve (3) has a stop groove (31). The stop groove (31) is annular and is used to be assembled with the stop edge (22) of the collar (2). The inner diameter of the sleeve (3) is larger than the diameter of the cylindrical flow channel (21) of the collar (2). The sleeve (3) and the collar (2) are used together to accommodate a large-diameter chalcogenide glass rod (200). The pressing block (4) is used for being inserted into the sleeve (3), and the pressing block (4) is used for being pressed against the large-diameter chalcogenide glass rod (200) from above and for receiving the downward pressure of extrusion molding.
2. The chalcogenide glass extrusion molding die according to claim 1, characterized in that: The cylindrical flow channel (21) is located at the center of the collar (2).
3. The chalcogenide glass extrusion molding die according to claim 1, characterized in that: The collar (2) also has a drainage slope (24), which extends downward from the upper surface (23) and is recessed toward the cylindrical flow channel (21).
4. The chalcogenide glass extrusion molding die according to claim 1, characterized in that: The sleeve (3) has an inner circumferential surface (32), an outer circumferential surface (33), a lower end surface (34) and a notch (35); the outer circumferential surface (33) of the sleeve (3) is used to fit with the circumferential wall (11) of the mold sleeve (1); The notch (35) is located at the lower end of the sleeve (3) and is surrounded by an inner circumferential surface (32), an outer circumferential surface (33) and a lower end surface (34); the overflow stop groove (31) is concave upward from the top of the notch (35) between the inner circumferential surface (32) and the outer circumferential surface (33); The notch portion (35) is matched with the outer peripheral surface (25), the overflow-stopping edge (22) and the upper surface (23) of the collar (2) in a concave-convex manner.
5. The chalcogenide glass extrusion molding die according to claim 1, characterized in that: The overflow-stop groove (31) of the sleeve (3) and the overflow-stop ridge (22) of the collar (2) are interference-fitted.
6. The chalcogenide glass extrusion molding die according to claim 4, characterized in that: The lower end surface (34) of the sleeve (3) is flush with the lower surface (26) of the collar (2) and is used to be supported together on the bottom wall (12) of the mold sleeve (1).
7. The chalcogenide glass extrusion molding die according to claim 1, characterized in that: The pressing block (4) comprises an extrusion head (41), an intermediate column (42), a plurality of guide edges (43) and a plurality of grooves (44); The extrusion head (41) is used to abut against the large-diameter chalcogenide glass rod (200) from above and to fit with the inner circumferential surface (32) of the sleeve (3); The middle column (42) extends upward from the extrusion head (41), and the middle column (42) is used to receive the downward pressure of the extrusion molding; A plurality of guide ribs (43) are arranged at intervals around the middle column (42), connected to the middle column (42) in the radial direction and connected to the extrusion head (41) at the bottom in the up-down direction (D1), and the plurality of guide ribs (43) are used to fit with the inner circumferential surface (32) of the sleeve (3); Each groove (44) is formed between adjacent guide edges (43) and the extrusion head (41) and the intermediate column (42).
8. The chalcogenide glass extrusion molding die according to claim 7, characterized in that: A plurality of guide edges (43) are arranged at equal intervals.
9. The chalcogenide glass extrusion molding die according to claim 8, characterized in that: The plurality of guide edges (43) are four guide edges (43).
10. The chalcogenide glass extrusion molding die according to claim 7, characterized in that: A plurality of guide ribs (43) are flush with the middle column (42) at the top.