Forming die and forming device for liquid material

Abstract

The utility model relates to a forming die and a forming device for a liquid material. The forming die comprises a die body, a forming plug and an air cooling tool. A forming cavity is formed in the mold body, a first opening and a second opening which are communicated with the forming cavity are formed in the two ends of the mold body respectively, and the mold body is provided with an open groove for exposing the forming cavity in the extending direction of the forming cavity; the forming plug is connected with one end of the mold main body and blocks the first opening; the air cooling tool comprises a ventilation main body and two sealing plates, the ventilation main body covers part of the open groove and is provided with an air inlet hole and a plurality of air outlet holes opposite to the forming cavity, the air inlet hole is communicated with the air outlet holes, and the two sealing plates are arranged at intervals in the extending direction of the forming cavity and connected to the side, facing the forming cavity, of the ventilation main body; the air outlet hole is located between the two sealing plates. According to the forming die and the air cooling tool, the liquid material cooling forming rate can be increased, and meanwhile volatilization of volatile components such as fluorine in the liquid material can be restrained.

Description

Technical Field

[0001] The present application relates to the technical field of glass forming, and in particular to a forming mold and a forming device for liquid material. Background Art

[0002] Fluorine-containing optical glass is widely used in various optical imaging systems due to its excellent optical properties such as low refractive index and low dispersion. Among them, optical glass in the form of glass rods has low material loss in subsequent processing steps and is favored by downstream customers. However, fluorine-containing glass rods contain volatile substances such as fluorine in the formula components, which are very easy to volatilize during the molding process, resulting in phase separation on the surface of the rods and the formation of volatilization stripes, which affects the production yield of the glass rods. Summary of the invention

[0003] Based on this, it is necessary to provide a molding mold and a molding device for liquid material to address the problem that fluorine-containing glass rod materials are easily volatilized during the molding process and affect the production yield.

[0004] A forming die for liquid material, comprising:

[0005] A mold body, wherein a molding cavity is provided in the mold body, a first opening and a second opening communicating with the molding cavity are respectively provided at two ends of the mold body, and the mold body is provided with a groove along an extension direction of the molding cavity to expose the molding cavity;

[0006] a molding plug connected to one end of the mold body and sealing the first opening; and

[0007] The air-cooling tooling comprises a ventilation body and two sealing plates. The ventilation body cover is arranged on part of the groove and is provided with an air inlet hole and a plurality of air outlet holes opposite to the forming cavity. The air inlet hole and the air outlet hole are connected. The two sealing plates are arranged at intervals along the extension direction of the forming cavity and are both connected to the side of the ventilation body facing the forming cavity. The air outlet hole is located between the two sealing plates.

[0008] In the above-mentioned molding die, when the liquid enters the molding cavity of the mold body and is pulled to the corresponding position of the air-cooling tooling, the inert gas received by the air inlet is ejected from the air outlet to cool the liquid, thereby promoting the cooling and molding of the liquid. In addition, two spaced-apart sealing plates are provided on the side of the ventilation body facing the molding cavity, and the sealing plates can shorten the distance between the air-cooling tooling and the surface of the liquid, that is, close part of the space between the ventilation body and the surface of the liquid, thereby reducing the speed of inert gas leakage from between the ventilation body and the surface of the liquid. This is conducive to improving the concentration of inert gas in the cooling cavity formed by the ventilation body, the two sealing plates, the mold body, and the surface of the liquid, and reducing the proportion of air, so that the air-cooling tooling can inhibit the volatilization of volatile components such as fluorine in the liquid while promoting the cooling and molding rate of the liquid, which is conducive to reducing the probability of generating volatile streaks after the liquid is molded, and further conducive to improving the production yield of the liquid.

[0009] In one embodiment, at least a portion of the sealing plate is embedded in the groove, the mold body has two opposite side walls for defining the groove, and the two end surfaces of the sealing plate that are opposite to each other abut against the two side walls respectively.

[0010] In one embodiment, the ventilation body includes a cover portion and a boss portion which are connected to each other, the cover portion is covered on the outer surface of the mold body, the boss portion is located on the side of the cover portion facing the groove and is at least partially embedded in the groove, the boss portion is located between the two sealing plates, the air outlet is provided on the boss portion, and the air inlet is provided on the cover portion.

[0011] In one embodiment, the two ends of the boss portion are respectively connected to the two sealing plates, and the two opposite side surfaces of the boss portion are respectively abutted against the two side walls. The boss portion, the two sealing plates and the two side walls are used to form a cooling cavity together with the liquid surface.

[0012] In one embodiment, the mold body has an inner wall defining the molding cavity, the inner wall is connected to the side wall, and the sealing plate is spaced apart from the inner wall.

[0013] In one embodiment, the two sealing plates are respectively connected to two opposite edges of the ventilation body along the extension direction of the forming cavity.

[0014] In one of the embodiments, the air-cooling tooling and the forming plug are spaced apart from each other, and the portion of the groove located between the air-cooling tooling and the forming plug forms a liquid material inlet.

[0015] In one of the embodiments, the molding plug has a cooling surface facing the molding cavity, the cooling surface is used to receive liquid material, and the cooling surface is inclined to the extension direction of the molding cavity.

[0016] In one embodiment, the inner wall of the molding cavity formed by the mold body is a cylindrical portion.

[0017] A molding device comprises a traction mechanism and a molding die as described in any of the above embodiments, wherein the traction mechanism is arranged on one side of the second opening of the mold body and is used for traction of liquid material being molded in the molding cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the forming mold in some embodiments.

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the air-cooling tooling in the molding mold shown.

[0020] Figure 3 for Figure 1 A schematic structural diagram of the mold body in the molding mold shown.

[0021] Figure 4 for Figure 1 A schematic structural diagram of a molding plug in a molding die is shown.

[0022] Figure 5 for Figure 1 Schematic diagram of the structure of the bottom mold in the molding mold shown.

[0023] Reference numerals:

[0024] 10. Molding mold; 11. Mold body; 111. Molding cavity; 112. Inner wall; 113. First opening; 114. Second opening; 115. Slot; 116. Side wall; 117. Liquid inlet; 12. Molding plug; 121. Cooling surface; 122. Back surface; 13. Air-cooling tooling; 131. Ventilation body; 1311. Cover plate; 1312. Air inlet; 1313. Boss portion; 1314. Air outlet; 132. Sealing plate; 14. Bottom mold; 21. Discharge pipe. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0027] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0031] See also Figure 1 , Figure 2 and Figure 3 , Figure 1-Figure 3 The structural schematic diagrams of the forming mold 10, the air-cooling tooling 13 and the mold body 11 in some embodiments of the present application are respectively shown. The forming mold 10 provided in the present application can be used for cooling and molding any applicable liquid material such as glass liquid material. The forming mold 10 can be used to cool and mold the liquid material into any form of solid glass such as rod material, strip material, plate material, etc. In the present application, the cooling and molding of the glass liquid material into a glass rod material in the forming mold 10 is used as an example for explanation. The forming mold 10 can be used in a molding device, and the molding device can also include a discharge mechanism and a traction mechanism. The discharge mechanism has a discharge pipe 21 for dripping the liquid material into the molding mold 10, and the traction mechanism is used to pull the rod material formed in the molding mold 10 to provide traction for the continuous flow and molding of the liquid material. It can be understood that when the liquid material is produced, the liquid material in the discharge pipe 21 flows into the molding mold 10, and is cooled and molded into a rod material in the molding mold 10, and then is pulled away from the molding mold 10 by the traction mechanism.

[0032] In some embodiments, the molding die 10 includes a mold body 11, a molding plug 12, and an air-cooling tool 13. The mold body 11 may be a generally hollow structure with openings at both ends. A molding cavity 111 for cooling and molding liquid materials is provided in the mold body 11. A first opening 113 and a second opening 114 communicating with the molding cavity 111 are provided at both ends of the mold body 11. A groove 115 is also provided on the outer surface of the mold body 11 to expose the molding cavity 111 along the extension direction of the molding cavity 111. In some embodiments, the outer shape of the mold body 11 may be generally in the shape of a rectangular parallelepiped. The first opening 113 and the second opening 114 are provided at both end surfaces of the mold body 11. Three of the side surfaces of the mold body 11 are closed, and another side surface is provided with a groove 115 communicating with the molding cavity 111. The extension direction of the molding cavity 111 may be parallel to the axial direction of the mold body 11, for example, parallel to the direction of the line connecting the two end surfaces of the mold body 11.

[0033] In some embodiments, the molding plug 12 is connected to one end of the mold body 11 and blocks the first opening 113. During the production of the bar stock, the liquid material can drip through the discharge pipe 21 to the part of the molding cavity 111 close to the molding plug 12, or directly drip onto the surface of the molding plug 12 facing the molding cavity 111, and flow along the molding plug 12 to the inner wall 112 of the mold body 11 defining the molding cavity 111. The traction mechanism can be arranged on the side where the second opening 114 of the mold body 11 is located, so as to pull the molded bar stock in the molding cavity 111 out through the second opening 114.

[0034] In some embodiments, the air-cooling tool 13 includes a ventilation body 131 and two sealing plates 132. The ventilation body 131 is covered on the mold body 11 and covers part of the slot 115. The ventilation body 131 is provided with an air inlet 1312 and a plurality of air outlets 1314. The plurality of air outlets 1314 are opposite to the molding cavity 111 and can be arranged in an array. The air inlet 1312 and the air outlet 1314 are connected. The air inlet 1312 is used to receive inert gas. During the production process, an external inert gas providing mechanism can inject inert gas into the air inlet 1312. After the inert gas passes through the air channel in the ventilation body 131, it is ejected from the air outlet 1314 to cool the liquid material in the molding cavity 111. The two sealing plates 132 are arranged at intervals along the extension direction of the molding cavity 111, and are both connected to the side of the ventilation body 131 facing the molding cavity 111. The plurality of air outlets 1314 can be located between the two sealing plates 132.

[0035] It can be understood that the air-cooling fixture 13 can be spaced apart from the molding plug 12, and the portion of the slot 115 between the air-cooling fixture 13 and the molding plug 12 forms a liquid material inlet 117. During the production process, the discharge pipe 21 can extend into the mold body 11 through the liquid material inlet 117 portion of the slot 115, and the liquid material drips into the molding cavity 111 through the discharge pipe 21. Due to the traction provided by the traction mechanism, the liquid material dripping into the molding cavity 111 and located between the air-cooling fixture 13 and the molding plug 12 can flow and cool on the inner wall 112 of the mold body 11 defining the molding cavity 111, thereby stabilizing the flow on the mold body 11 and being adjusted to a corresponding shape by the mold body 11, such as a rod shape. Then it is pulled and moved in the direction from the first opening 113 to the second opening 114 to the position corresponding to the air-cooling tooling 13. The inert gas sprayed from the ventilation body 131 can promote the cooling and molding of the liquid material opposite to the air-cooling tooling 13. The liquid material after being pulled through the air-cooling tooling 13 is cooled and solidified to be formed into a solid rod material, and is pulled out of the mold body 11 through the second opening 114.

[0036] In the above-mentioned molding die 10, when the liquid material enters the molding cavity 111 of the mold body 11 and is pulled to the corresponding position of the air-cooling fixture 13, the inert gas received by the air inlet 1312 is ejected from the air outlet 1314 to cool the liquid material, thereby promoting the cooling and molding of the liquid material. In addition, two spaced-apart sealing plates 132 are provided on the side of the ventilating body 131 facing the molding cavity 111. The sealing plates 132 can shorten the distance between the air-cooling fixture 13 and the surface of the liquid material, that is, close part of the space between the ventilating body 131 and the surface of the liquid material, thereby reducing the speed at which the inert gas leaks from between the ventilating body 131 and the surface of the liquid material. This is beneficial to increasing the inert gas concentration in the cooling cavity formed by the ventilation body 131, the two sealing plates 132, the mold body 11 and the surface of the liquid material, and reducing the air ratio, so that the air-cooling tooling 13 can not only promote the cooling and molding rate of the liquid material, but also inhibit the volatilization of volatile components such as fluorine in the liquid material, which is beneficial to reducing the probability of generating volatile streaks after the liquid material is molded, and further helps to improve the production yield of the liquid material.

[0037] It is understandable that the higher the concentration of the inert gas in the cooling chamber, the lower the concentration of air (oxygen and other components), the less likely the surface of the liquid in the cooling chamber will volatilize, and the portion of the liquid in contact with the inner wall 112 of the mold body 11 defining the molding cavity 111 is restricted by the inner wall 112 and is not likely to volatilize, which is beneficial to suppress the volatilization of the liquid in the corresponding portion of the mold body 11 during the accelerated cooling process. The inert gas involved in this application includes, but is not limited to, any suitable gas capable of suppressing the volatilization of the liquid, such as helium, neon, and argon.

[0038] Therefore, the forming mold 10 provided in the present application is suitable for the production of low-refractive-index, low-dispersion fluorine-containing glass rods. During the cooling and molding process of the liquid material, the volatilization of volatile components such as fluorine in the liquid material during the cooling process can be suppressed, thereby suppressing the generation of volatilization streaks, which is beneficial to improving the production yield of the rod material. Of course, the production of fluorine-containing glass rods is only one of the application types of the forming mold 10. The forming mold 10 provided in the present application can also be used for the cooling and molding of any other applicable types of glass liquid or other liquid materials. The application of the forming mold 10 is not limited in the present application.

[0039] It should be noted that, under the premise of meeting the discharge requirements and molding process requirements, the distance between the air-cooling fixture 13 and the molding plug 12 can be as short as possible to reduce the residence time of the liquid in the space between the air-cooling fixture 13 and the molding plug 12, and further inhibit the impact of the volatilization of the fluorine component in the liquid on the molding. In this process, the liquid is not cooled by the air-cooling fixture 13, and the volatilization phenomenon is not obvious, which is not easy to affect the production yield. The air-cooling fixture 13 and the second opening 114 can be spaced apart, that is, the rod between the air-cooling fixture 13 and the second opening 114 is exposed through the slot 115, and the rod cooled by the air-cooling fixture 13 has been solidified and will no longer face the problem of volatilization.

[0040] In some embodiments, at least a portion of the sealing plate 132 protrudes from the side of the ventilation body 131 facing the molding cavity 111 and is embedded in the groove 115. The mold body 11 has two opposite side walls 116 for defining the groove 115. The two end surfaces of the sealing cavity opposite to each other respectively abut the two side walls 116, which can improve the sealing performance of the sealing plate 132 on the space between the ventilation body 131 and the liquid material, increase the concentration of the inert gas in the cooling cavity, and further reduce the volatilization of the liquid material during the cooling and molding process.

[0041] In some embodiments, the vent body 131 includes a cover plate portion 1311 and a boss portion 1313 connected to each other. The cover plate portion 1311 is covered on the outer surface of the mold body 11. The cover plate portion 1311 can contact or fit with the outer surface of the mold body 11 on both sides of the groove 115, thereby improving the sealing performance between the vent body 131 and the mold body 11. The boss portion 1313 is convexly arranged on the side of the cover plate portion 1311 facing the groove 115 and is at least partially embedded in the groove 115. The boss portion 1313 is located between the two sealing plates 132. The air outlet 1314 is arranged on the side of the boss portion 1313 facing the molding cavity 111, and the air inlet 1312 is arranged on the cover plate portion 1311 and located outside the mold body 11, so as to facilitate docking with the external inert gas providing mechanism.

[0042] Further, in some embodiments, the two ends of the boss portion 1313 are respectively connected to the two sealing plates 132, and the two opposite side surfaces of the boss portion 1313 are respectively abutted against the two side walls 116. In this way, the abutment and cooperation between the two side surfaces of the boss portion 1313 and the two side walls 116, combined with the design that the cover portion 1311 contacts the outer surface of the mold body 11, can effectively improve the sealing performance between the mold body 11 and the ventilation body 131, and further slow down the leakage of the inert gas in the cooling cavity. It can be understood that in the cooling and molding process of the liquid material, the boss portion 1313, the sealing plate 132 and the two side walls 116 and the surface of the liquid material located between the two sealing plates 132 are jointly enclosed to form a semi-enclosed cooling cavity, and the inert gas ejected from the air outlet 1314 cools the partial surface of the liquid material defining the cooling cavity in the cooling cavity, and then flows out from the gap between the sealing plate 132 and the liquid material. In some embodiments, the cover portion 1311 , the boss portion 1313 , and the sealing plate 132 may be integrally formed.

[0043] In some embodiments, the inner wall 112 of the mold body 11 defining the molding cavity 111 is connected to the side wall 116 defining the slot 115, and the sealing plate 132 is located in the slot 115, and the surface of the sealing plate 132 facing the molding cavity 111 is spaced from the inner wall 112, so that there is a gap between the sealing plate 132 and the liquid material. It can be understood that there needs to be a certain gap between the sealing plate 132 and the liquid material to avoid the sealing plate 132 contacting the liquid material and affecting the surface yield of the molding bar material, and at the same time, the inert gas flows out to form an air flow path. Of course, on the basis of forming a gap between the sealing plate 132 and the liquid material, the gap between the sealing plate 132 and the liquid material can be as small as possible to fully increase the concentration of the inert gas in the cooling chamber.

[0044] In some embodiments, the two sealing plates 132 are respectively connected to the two opposite edges of the ventilation body 131 along the extension direction of the molding cavity 111, which can make full use of the structure of the ventilation body 131, increase the area that can be set on the boss portion 1313, thereby increasing the number of air holes 1314, and increasing the cooling surface 121 of the air-cooled tooling 13 for the liquid material, thereby improving the efficiency of cooling molding.

[0045] Combination Figure 1 and Figure 4As shown, in some embodiments, the molding plug 12 has a cooling surface 121 facing the molding cavity 111, and the cooling surface 121 is used to receive the liquid material, and the cooling surface 121 is inclined to the extension direction of the molding cavity 111. For example, the molding plug 12 may also include a back surface 122 facing away from the molding cavity 111 and the cooling surface 121, and the back surface 122 may be a plane flush with the end surface of the mold body 11 where the first opening 113 is set. In the direction in which the liquid material drips from the discharge pipe 21, the distance between the cooling surface 121 and the back surface 122 gradually increases. As a result, the cooling surface 121 can adapt to the conduction requirements of the liquid material, so that the liquid material flows along the cooling surface 121 to the inner wall 112 of the mold body 11, which is conducive to fully utilizing the molding plug 12 to cool the liquid material and improve the cooling molding efficiency. Of course, according to different cooling molding process requirements, the cooling surface 121 can also be set as a plane parallel to the back surface 122 or as a curved surface.

[0046] In some embodiments, when the forming mold 10 is used to cool and mold the liquid material into a rod shape, the inner wall 112 of the mold body 11 used to define the molding cavity 111 is a part of the outer peripheral surface of a cylinder, which is conducive to restricting the flow and shape of the liquid material, so that the liquid material is smoothly cooled and solidified to form a rod. Of course, the forming mold 10 is not limited to the production of rods. When the forming mold 10 is used to produce glass in other forms such as strips and plates, the shape of the inner wall 112 can be set according to process requirements.

[0047] Combination Figure 1 and Figure 5 As shown, in some embodiments, the molding die 10 may further include a bottom mold 14, the shape of the bottom mold 14 may be roughly "U"-shaped, the mold body 11 may be arranged on the bottom mold 14 and located in the U-shaped space formed by the bottom mold 14, and the slot 115 is arranged away from the bottom mold 14. In this way, it is beneficial to improve the assembly accuracy and assembly reliability of the mold body 11, and can achieve heat insulation for the mold body 11 and other machine structures, and improve the structural reliability and safety performance of the molding die 10. The molding die 10 may also include any other applicable components to achieve more functions, and the above-mentioned components may also be replaced by other components to achieve corresponding functions, which will not be repeated in this application.

[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A molding die for liquid material, characterized in that: include: A mold body, wherein a molding cavity is provided in the mold body, a first opening and a second opening communicating with the molding cavity are respectively provided at two ends of the mold body, and the mold body is provided with a groove along an extension direction of the molding cavity to expose the molding cavity; A molding plug connected to one end of the mold body and sealing the first opening; as well as, The air-cooling tooling comprises a ventilation body and two sealing plates. The ventilation body cover is arranged on part of the groove and is provided with an air inlet hole and a plurality of air outlet holes opposite to the molding cavity. The air inlet hole is communicated with the air outlet hole. The air inlet hole is used to receive inert gas. The two sealing plates are arranged at intervals along the extension direction of the molding cavity and are both connected to the side of the ventilation body facing the molding cavity. The air outlet hole is located between the two sealing plates.

2. The molding die according to claim 1, characterized in that: At least a portion of the sealing plate is embedded in the groove, the mold body has two opposite side walls for defining the groove, and the two end surfaces of the sealing plate that are opposite to each other respectively abut against the two side walls.

3. The molding die according to claim 2, characterized in that: The ventilation body includes a cover plate portion and a boss portion that are interconnected, the cover plate portion is covered on the outer surface of the mold body, the boss portion is located on the side of the cover plate portion facing the groove and is at least partially embedded in the groove, the boss portion is located between the two sealing plates, the air outlet is provided on the boss portion, and the air inlet is provided on the cover plate portion.

4. The molding die according to claim 3, characterized in that: The two ends of the boss portion are respectively connected to the two sealing plates, and the two opposite side surfaces of the boss portion are respectively abutted against the two side walls. The boss portion, the two sealing plates and the two side walls are used to form a cooling cavity with the liquid surface.

5. The molding die according to claim 2, characterized in that: The mold body has an inner wall defining the molding cavity, the inner wall is connected to the side wall, and the sealing plate is spaced apart from the inner wall.

6. The molding die according to any one of claims 1 to 5, characterized in that: The two sealing plates are respectively connected to two opposite edges of the ventilation body along the extending direction of the forming cavity.

7. The molding die according to any one of claims 1 to 5, characterized in that: The air cooling tooling and the forming plug are arranged at intervals, and the portion of the groove located between the air cooling tooling and the forming plug forms a liquid material inlet.

8. The molding die according to any one of claims 1 to 5, characterized in that: The molding plug has a cooling surface facing the molding cavity, the cooling surface is used to receive liquid material, and the cooling surface is inclined to the extension direction of the molding cavity.

9. The molding die according to any one of claims 1 to 5, characterized in that: The inner wall of the molding cavity formed by the mold body is a cylindrical part.

10. A molding device, characterized in that: It comprises a traction mechanism and a molding die as described in any one of claims 1 to 9, wherein the traction mechanism is arranged on one side of the second opening of the mold body and is used to traction the liquid material molded in the molding cavity.

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