Glass forming cooling stop block and glass forming mold

Abstract

The utility model relates to a glass forming cooling check block and a glass forming mold. The glass forming cooling check block comprises a check block body, the check block body is provided with a glass liquid guide face, the check block body is provided with a first cooling cavity and second cooling cavities, the first cooling cavity is located in the middle of the check block body, the second cooling cavities are located on the two sides of the check block body, and the volume of the first cooling cavity is larger than that of the second cooling cavities. The check block body is further provided with a connecting cavity, a cooling medium inlet and a cooling medium outlet, the connecting cavity is connected with the first cooling cavity and the second cooling cavity, the cooling medium inlet is connected with one of the first cooling cavity and the second cooling cavity, and the cooling medium outlet is connected with the other one of the first cooling cavity and the second cooling cavity. The temperature of the molten glass in the middle and on the two sides of the forming check block is basically consistent, the problem that inverted T stripes are generated in the glass due to the temperature difference in the forming process of the glass with the thickness of 40 mm or above is solved, and the yield of glass strips is obviously improved.

Description

Technical Field

[0001] The present application relates to the technical field of optical glass forming, and in particular to a glass forming cooling block and a glass forming mold. Background Art

[0002] When optical glass is formed, the high-temperature molten glass flows out of the discharge pipe into the molding mold and first contacts the block in the molding mold. When the temperature of the molten glass flowing out of the discharge pipe is high, the temperature of the molten glass reaching the molding mold is also high. When the discharge pipe cannot be replaced, the block is the key to whether the high-temperature molten glass can be cooled down.

[0003] Especially for glass with a thickness of more than 40mm, it stays on the block for a long time. The glass liquid on both sides of the block stays on the block for the longest time, and the side mold has an auxiliary cooling function, so the cooling speed on both sides of the block is fast and the temperature is low. The glass liquid in the middle of the block is at the first contact position between the glass coming out of the discharge pipe and the block, and the residence time in the middle of the block is short, and the heat can only be taken away by the block, so the cooling speed is slow and the temperature is high. The thicker the formed glass is, the less likely the heat is to dissipate. The uncooled glass liquid will cause a temperature difference between the middle and the two sides of the glass liquid during the forming process, which is easy to produce inverted T-stripes in the middle of the glass strip, resulting in poor glass forming. Summary of the invention

[0004] Based on this, a glass forming cooling block and a glass forming mold are provided to reduce the temperature difference between the glass liquid in the middle and on both sides of the glass forming cooling block.

[0005] The embodiment of the first aspect of the present application provides a glass forming cooling block, comprising a block body, a front end surface of the block body is provided with a glass liquid guide surface, and the block body is provided with:

[0006] A first cooling cavity, wherein the first cooling cavity is located in the middle of the block body;

[0007] A second cooling cavity, wherein the second cooling cavity is located at two sides of the block body, and the volume of the first cooling cavity is greater than the volume of the second cooling cavity;

[0008] A connecting cavity, wherein the connecting cavity connects the first cooling cavity and the second cooling cavity;

[0009] a cooling medium inlet connected to one of the first cooling cavity and the second cooling cavity;

[0010] A cooling medium outlet is connected to the other of the first cooling cavity and the second cooling cavity.

[0011] In one embodiment, the first cooling cavity is an axisymmetric structure with the center line of the block body;

[0012] A plurality of the second cooling cavities are provided, and the plurality of the second cooling cavities are axially symmetrical structures with the center line of the block body.

[0013] In one embodiment, the cooling medium inlet is connected to the first cooling cavity;

[0014] The cooling medium outlet is connected to the second cooling cavity.

[0015] In one of the embodiments, the connecting cavity is connected to the bottom of the first cooling cavity.

[0016] In one embodiment, one end of the connecting cavity is opened on the outer wall of the block body, and the other end extends to the inside of the block body, so as to be connected with the first cooling cavity and the second cooling cavity;

[0017] The block body is connected to a blocking piece, and the blocking piece is used to block the connection cavity opened at one end of the block body.

[0018] In one of the embodiments, the blocking member comprises a blocking bolt threadedly connected to the end of the connecting cavity;

[0019] The end of the blocking bolt and the inner wall of the connecting cavity are combined to form a connecting channel, and the connecting channel takes the center line of the block body as an axisymmetric structure.

[0020] In one of the embodiments, at least two cooling medium inlets are provided.

[0021] In one embodiment, two cooling medium inlets are symmetrically arranged along the center line of the block body.

[0022] In one embodiment, the volume of the first cooling cavity accounts for 1 / 10 to 3 / 10 of the volume of the block body.

[0023] An embodiment of the second aspect of the present application provides a glass forming mold, comprising the glass forming cooling stopper described in any one of the above embodiments.

[0024] In the above-mentioned glass forming cooling block and glass forming mold, during the process of forming the molten high-temperature glass liquid in the glass forming mold, the glass forming cooling block cools the high-temperature glass liquid, the connecting cavity connects the first cooling cavity and the second cooling cavity, the cooling medium enters the first cooling cavity and the second cooling cavity through the cooling medium inlet, and flows out through the cooling medium outlet to form a circulation of the cooling medium in the block body. Since the volume of the first cooling cavity is larger than the volume of the second cooling cavity, the first cooling cavity located in the middle of the block body has a higher cooling effect on the high-temperature glass liquid through the block body, and the second cooling cavities located on both sides of the block body have a weaker cooling effect on the high-temperature glass liquid through the block body. In this way, through the cooperation of the first cooling cavity and the second cooling cavity, the cooling capacity of the block body is weakened from the middle to the two sides, strong cooling is formed in the middle of the block, and relatively weak cooling is formed on both sides of the block, so that the temperature of the glass liquid in the middle and on both sides of the forming block is basically the same, so as to reduce the temperature difference of the glass liquid in the middle and on both sides of the glass forming cooling block, solve the problem of inverted T-stripes inside the glass caused by temperature difference during the forming process of glass with a thickness of 40mm or more, and significantly improve the yield of glass strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a vertical cross-sectional view of a glass forming cooling block according to an embodiment of the present application.

[0026] Figure 2 A top view of a glass forming cooling block according to an embodiment of the present application.

[0027] Figure 3 It is a side view of a glass forming cooling block according to an embodiment of the present application.

[0028] Reference numerals:

[0029] 1000, block body; 1100, glass liquid guide surface;

[0030] 100. A first cooling cavity;

[0031] 200, second cooling cavity;

[0032] 300, connecting cavity; 310, connecting channel;

[0033] 400, cooling medium inlet;

[0034] 500, cooling medium outlet;

[0035] 600. Sealing parts. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] See also Figure 1 and Figure 2 At least one embodiment of the present application provides a glass forming cooling block, comprising a block body 1000, a glass liquid guide surface 1100 is arranged on the front end surface of the block body 1000, a first cooling cavity 100 and a second cooling cavity 200 are arranged on the block body 1000, the first cooling cavity 100 is located in the middle of the block body 1000, the second cooling cavity 200 is located on both sides of the block body 1000, and the volume of the first cooling cavity 100 is greater than the volume of the second cooling cavity 200. The block body 1000 is also provided with a connecting cavity 300, a cooling medium inlet 400 and a cooling medium outlet 500, the connecting cavity connects the first cooling cavity 100 and the second cooling cavity 200, the cooling medium inlet 400 is connected to one of the first cooling cavity 100 and the second cooling cavity 200, and the cooling medium outlet 500 is connected to the other of the first cooling cavity 100 and the second cooling cavity 200.

[0043] According to the glass forming cooling block and glass forming mold of the embodiment of the present application, during the process of forming the molten high-temperature glass liquid in the glass forming mold, the glass forming cooling block cools the high-temperature glass liquid, the connecting cavity 300 connects the first cooling cavity 100 and the second cooling cavity 200, the cooling medium enters the first cooling cavity 100 and the second cooling cavity 200 through the cooling medium inlet 400, and flows out through the cooling medium outlet 500, so as to form a circulation of the cooling medium in the block body 1000. Since the volume of the first cooling cavity 100 is greater than the volume of the second cooling cavity 200, the first cooling cavity 100 located in the middle of the block body 1000 has a higher cooling effect on the high-temperature glass liquid through the block body 1000, and the second cooling cavity 200 located on both sides of the block body 1000 has a weaker cooling effect on the high-temperature glass liquid through the block body 1000. In this way, through the cooperation of the first cooling cavity 100 and the second cooling cavity 200, the cooling capacity of the block body 1000 is weakened from the middle to the two sides, strong cooling is formed in the middle of the block, and relatively weak cooling is formed on both sides of the block, so that the temperature of the glass liquid in the middle and on both sides of the forming block is basically the same, so as to reduce the temperature difference of the glass liquid in the middle and on both sides of the glass forming cooling block, solve the problem of inverted T-stripes inside the glass caused by temperature difference during the forming process of glass with a thickness of 40mm or more, and significantly improve the yield of glass strips.

[0044] In some embodiments, the block body 1000 is made of heat-resistant and heat-conductive material, and heat-resistant and heat-conductive metals such as cast iron and copper can be selected. The glass liquid guide surface 1100 is at the front end of the block body 1000, and the cross section of the glass liquid guide surface 1100 is a plane, a curved surface or an aspherical surface. In this embodiment, it is an aspherical surface, which is concave toward the block body 1000, with a radius range of 400-900 mm, and the inclination angle range of the longitudinal section of the glass liquid guide surface 1100 is 20°-70°.

[0045] See also Figure 2 In some embodiments, the first cooling cavity 100 is symmetrically structured with the center line of the block body 1000. A plurality of second cooling cavities 200 are provided, and the plurality of second cooling cavities 200 are symmetrically structured with the center line of the block body 1000. Figure 2 As shown by the center line C in .

[0046] See also Figure 1 and Figure 2Specifically, in some embodiments, the longitudinal section of the first cooling cavity 100 is irregularly shaped, and is disposed in the middle of the block body 1000, and the edge of the first cooling cavity 100 is close to the outer wall of the block body 1000. The first cooling cavity 100 is an axisymmetric structure with the center line of the block body 1000. Two second cooling cavities 200 are provided, and are disposed on both sides of the first cooling cavity 100. The two second cooling cavities 200 are not only an axisymmetric structure with the center line C of the block body 1000.

[0047] In some embodiments, the volume of the first cooling cavity 100 accounts for 1 / 10 to 3 / 10 of the volume of the block body 1000 , so that the first cooling cavity 100 has a good strong cooling effect on the block body 1000 .

[0048] In some embodiments, the bottom of the first cooling cavity 100 is 5-10 mm away from the bottom of the block body 1000, the top of the first cooling cavity 100 is 5-10 mm away from the top of the block body 1000, and the front end surface of the first cooling cavity 100 is about 3-8 mm away from the glass liquid guide surface 1100.

[0049] See also Figure 2 In some embodiments, the second cooling cavity 200 is cylindrical, and the axis of the second cooling cavity is parallel to the center line C of the block body 1000 .

[0050] It is understandable that the shapes of the first cooling cavity 100 and the second cooling cavity 200 are not limited to the above description, and can be designed into various shapes according to specific usage requirements and structures, as long as the volume of the first cooling cavity 100 located in the middle of the block body 1000 is greater than the volume of the second cooling cavity 200 located on both sides of the block body 1000.

[0051] See also Figure 2 and Figure 3 In some embodiments, the cooling medium inlet 400 is connected to the first cooling cavity 100. The cooling medium outlet 500 is connected to the second cooling cavity 200. Through the above configuration, the cooling medium first enters the first cooling cavity 100 through the cooling medium inlet 400, so that the cooling medium in the first cooling cavity 100 can have a strong cooling effect on the glass liquid through the block body 1000. As the cooling medium flows, the cooling medium flows into the second cooling cavity 200 through the connecting cavity. After the cooling medium enters the second cooling cavity 200, the cooling effect of the cooling medium at this time has gradually weakened, so that the second cooling cavity 200 located on both sides of the block body 1000 has a weaker cooling effect than the first cooling cavity 100.

[0052] In some embodiments, at least two cooling medium inlets 400 are provided. Thus, providing multiple cooling medium inlets 400 can improve the efficiency of the cooling medium entering the block body 1000 and improve the overall cooling effect of the block body 1000.

[0053] In some embodiments, two cooling medium inlets 400 are symmetrically arranged along the midline of the block body 1000. Two cooling medium inlets 400 are arranged symmetrically about the midline of the block body 1000. By so arranging, the cooling medium enters the first cooling cavity 100 more evenly, thereby improving the temperature uniformity of the first cooling cavity 100. Specifically, the diameter of the cooling medium inlet 400 can be set to 8-14 mm.

[0054] In some embodiments, the cooling medium outlet 500 is located at the bottom of the block body 1000, 5-10 mm away from the bottom of the block body 1000, and the center distance between the cooling medium inlet 400 and the cooling medium outlet 500 is 20-60 mm.

[0055] In some embodiments, the diameter of the cooling medium outlet 500 is set to be consistent with the diameter of the second cooling cavity 200, which is 8-14 mm, so that the cooling medium outlet 500 and the second cooling cavity 200 can be integrally formed, simplifying the processing steps and improving the processing efficiency.

[0056] It is understandable that both the cooling medium inlet and the cooling medium outlet 500 can be further processed or connected to a cooling medium interface to be connected to an external cooling medium supply device to form a cooling cycle of the cooling medium in the block body 1000 .

[0057] In some embodiments, the connecting cavity 300 is connected to the bottom of the first cooling cavity 100. Specifically, the connecting cavity 300 is located at one end of the first cooling cavity 100 away from the cooling medium inlet 400. Through the above arrangement, the flow path of the cooling medium is designed so that the cooling medium fills the first cooling cavity 100 as much as possible, and then enters the second cooling cavity 200 through the connecting cavity 300, so as to ensure that the first cooling cavity 100 and the second cooling cavity 200 are filled with cooling medium, thereby ensuring the cooling effect of the block body 1000.

[0058] See also Figure 2In some embodiments, one end of the connection cavity 300 is opened on the outer wall of the block body 1000, and the other end extends to the inside of the block body 1000, and is used to connect with the first cooling cavity 100 and the second cooling cavity 200. The block body 1000 is connected with a plugging member 600, and the plugging member 600 is used to plug the end of the connection cavity 300 opened on the block body 1000. Through the above arrangement, the connection cavity 300 can be obtained by directly punching from the outer wall of the block body 1000. After the processing is completed, the connection cavity 300 can be blocked by the plugging member 600, so that the connection cavity 300 is more convenient to process and improve the production efficiency.

[0059] In some embodiments, the blocking member 600 includes a blocking bolt threadedly connected to the end of the connection cavity 300. The end of the blocking bolt and the inner wall of the connection cavity 300 enclose a connection channel 310, and the connection channel 310 is an axisymmetric structure with the center line of the block body 1000. Through the above arrangement, the blocking bolt can be fixedly blocked at the end of the connection cavity 300 by threaded connection, so as to prevent the cooling medium from flowing out of the block body 1000 from the connection cavity 300. Further, the effective volume of the connection cavity 300 is adjusted by the blocking member 600, so that the effective volume of the cooling medium that can be accommodated in the connection cavity 300 is the size of the connection channel 310, so that the connection channel 310 is an axisymmetric structure with the center line C of the block body 1000, so as to improve the overall symmetry of the cooling medium filling space enclosed and constructed by the first cooling cavity 100, the connection channel 310 and the second cooling cavity 200, and further improve the uniformity and consistency of the cooling effect of the block body 1000.

[0060] At least one embodiment of the present application provides a glass forming mold, comprising the glass forming cooling block described in any one of the above embodiments.

[0061] When the glass forming mold in the embodiment of the present application is in use, the direction in which the glass liquid flows in the glass forming mold is the front direction, and a person faces the direction in which the glass liquid flows. The front end of the block body 1000 refers to the end of the block body 1000 facing the front direction after the glass forming cooling block is installed in the glass forming mold, and the rear end of the block body 1000 is opposite to the front direction. The left end of the block body 1000 refers to the left hand direction of a person, and the right end of the block body 1000 refers to the right hand direction of a person.

[0062] Specific process steps:

[0063] 1. Place the forming block on the assembled cast iron uncovered mold;

[0064] 2. The melted high-temperature glass liquid is guided from the discharge nozzle to the glass liquid guide surface 1100 on the forming block. The glass liquid guide surface 1100 is a non-spherical surface, which can enhance the cooling capacity of the glass liquid in the middle of the glass liquid guide surface 1100.

[0065] 3. The cooling medium enters the first cooling cavity 100 inside the block body 1000 through the cooling medium inlet 400. The cooling medium fills the first cooling cavity 100 to strongly cool the glass liquid in the middle of the block body 1000. Then, the cooling medium enters the second cooling cavity 200 on both sides of the first cooling cavity 100 through the connecting channel 310, and finally flows out of the block body 1000 through the cooling medium outlet 500, completing a cycle of the cooling medium in the block body 1000.

[0066] The above-mentioned glass forming cooling block and glass forming mold combine and magnify the advantages of the large-volume first cooling cavity 100 and the small-volume second cooling cavity 200 cooling inside the block body 1000, weaken the disadvantages of cooling by a single cooling cavity inside the block body 1000, and combine the large-volume first cooling cavity 100 and the small-volume second cooling cavity 200 cooling together inside the block body 1000. For the glass liquid in the middle of the block body 1000 that needs strong cooling, the large-volume first cooling cavity 100 is used for cooling. In order to ensure the cooling effect, two cooling medium inlets 400 are designed to ensure the cooling capacity of the high-temperature glass liquid. For the relatively low-temperature glass liquid on both sides of the block body 1000 that needs weak cooling or does not need cooling, the small-volume second cooling cavity 200 is used for cooling, and the second cooling cavity 200 is used to export the cooling medium that has absorbed the heat in the middle of the block, thereby weakening the cooling of the glass liquid on both sides of the block body 1000. Through the cooperation of the first cooling cavity 100 and the second cooling cavity 200, the cooling capacity of the block body 1000 is weakened from the middle to the two sides, strong cooling is formed in the middle of the block, and relatively weak cooling is formed on both sides of the block, so that the temperature of the glass liquid in the middle and on both sides of the forming block is basically the same, so as to reduce the temperature difference of the glass liquid in the middle and on both sides of the glass forming cooling block, solve the problem of inverted T-stripes inside the glass caused by temperature difference during the forming process of glass with a thickness of 40mm or more, and significantly improve the yield of glass strips.

[0067] 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.

[0068] 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 glass forming cooling block, characterized in that: It includes a block body, the front end surface of the block body is provided with a glass liquid guide surface, and the block body is provided with: A first cooling cavity, wherein the first cooling cavity is located in the middle of the block body; A second cooling cavity, wherein the second cooling cavity is located at two sides of the block body, and the volume of the first cooling cavity is greater than the volume of the second cooling cavity; A connecting cavity, wherein the connecting cavity connects the first cooling cavity and the second cooling cavity; a cooling medium inlet connected to one of the first cooling cavity and the second cooling cavity; A cooling medium outlet is connected to the other of the first cooling cavity and the second cooling cavity.

2. The glass forming cooling block according to claim 1, characterized in that: The first cooling cavity is axially symmetrical with the center line of the block body; A plurality of the second cooling cavities are provided, and the plurality of the second cooling cavities are axially symmetrical structures with the center line of the block body.

3. The glass forming cooling block according to claim 2, characterized in that: The cooling medium inlet is connected to the first cooling cavity; The cooling medium outlet is connected to the second cooling cavity.

4. The glass forming cooling block according to claim 3, characterized in that: The connecting cavity is connected to the bottom of the first cooling cavity.

5. The glass forming cooling block according to claim 4, characterized in that: One end of the connecting cavity is opened on the outer wall of the block body, and the other end extends to the inside of the block body, and is used to connect with the first cooling cavity and the second cooling cavity; The block body is connected to a blocking piece, and the blocking piece is used to block the connection cavity opened at one end of the block body.

6. The glass forming cooling block according to claim 5, characterized in that: The blocking member comprises a blocking bolt threadedly connected to the end of the connecting cavity; The end of the blocking bolt and the inner wall of the connecting cavity are combined to form a connecting channel, and the connecting channel takes the center line of the block body as an axisymmetric structure.

7. The glass forming cooling block according to claim 3, characterized in that: At least two cooling medium inlets are provided.

8. The glass forming cooling block according to claim 7, characterized in that: Two cooling medium inlets are symmetrically arranged along the center line of the block body.

9. The glass forming cooling block according to claim 1, characterized in that: The volume of the first cooling cavity accounts for 1 / 10 to 3 / 10 of the volume of the block body.

10. A glass forming mold, characterized in that: The invention comprises the glass forming cooling block as described in any one of claims 1 to 9.

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