Air permeability testing device for drip forming die
By designing a breathable amount test device for drip forming molds, the problem of the air permeability of traditional molds deviating from process requirements is solved, accurate measurement and process optimization are achieved, and molding quality and yield are improved.
Patent Information
- Application Number
- CN202421444246.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-06-24
Smart Images
Figure CN223037708U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of glass forming, and particularly to an air permeability testing device for a gob forming mold. Background Art
[0002] With the rapid development of glass forming technology, a production process for precision gob forming of optical glass has emerged. In this production process, optical glass gobs are dropped into a breathable gob forming mold, and compressed gas is introduced into the gob forming mold from the outside, thereby forming an air curtain on the surface of the forming part of the gob forming mold. The air curtain can suspend the gob in the air close to the surface of the gob forming mold to prevent the gob from contacting the gob forming mold, so that the formed glass has good surface quality. However, in traditional gob forming molds, due to factors such as assembly accuracy or differences in the air permeability of the gob forming mold, the actual air permeability of the gob forming mold is likely to deviate from the requirements of the gob forming process, affecting the forming yield. Summary of the Invention
[0003] Based on this, in view of the problem that the actual air permeability of traditional gob forming molds is likely to deviate from the requirements of the gob forming process, it is necessary to provide an air permeability testing device for a gob forming mold.
[0004] An air permeability testing device for a gob forming mold includes:
[0005] A holding handle with an air inlet and an air outlet at both ends. The holding handle has an end face where the air inlet is opened, and a groove is provided around the air inlet on the end face.
[0006] A gas flow meter connected to the air outlet and used to measure the flow rate of the gas flowing out of the air outlet; and
[0007] A sealing element is provided around the air inlet. Part of the sealing element is embedded in the groove, and the other part protrudes from the end face.
[0008] When testing the air permeability of the gob forming mold, the above air permeability testing device can be held by the holding handle, and the end face of the holding handle with the air inlet is opposite to the end face of the air outlet of the gob forming mold. The air permeability testing device is pressed against the end face of the air outlet of the gob forming mold, so that the air inlet is communicated with the air outlet channel of the gob forming mold. The sealing element is squeezed by the end face of the holding handle and the end face of the air outlet of the gob forming mold, which can improve the sealing performance between the air permeability testing device and the gob forming mold. Therefore, the structure of the above air permeability testing device is simple, the testing operation is convenient, and the sealing performance between the air permeability testing device and the gob forming mold is good during the testing process, which is beneficial to reducing the preparation cost of the air permeability testing device and improving the testing efficiency and accuracy.
[0009] In one embodiment, the air permeability testing device further includes a hose, one end of the hose is sleeved with the gas flow meter, and the other end communicates with the air outlet.
[0010] In one embodiment, the air permeability testing device further includes a connector, the connector is fixedly arranged at one end of the holding handle where the air outlet is provided, and the hose is inserted into the connector.
[0011] In one embodiment, the inner wall surface of the connector forms a tapered hole.
[0012] In one embodiment, in the direction from the air inlet to the air outlet, the holding handle includes a first end portion, a first connecting portion, a second connecting portion and a second end portion connected in sequence. The air inlet is provided at the first end portion, the air outlet is provided at the second end portion, the radial dimension of the first end portion is greater than that of the first connecting portion, and the radial dimension of the second end portion is greater than that of the second connecting portion.
[0013] In one embodiment, the radial dimension of the first connecting portion is greater than that of the second connecting portion.
[0014] In one embodiment, the radial dimension of the first connecting portion is equal to that of the second end portion.
[0015] In one embodiment, the end face of the first end portion is recessed to form the air inlet, the holding handle is hollowly arranged to form an air passage communicating the air inlet and the air outlet, the radial dimension of the air inlet is greater than that of the air passage, and the side wall defining the air inlet of the first end portion surrounds the air passage.
[0016] In one embodiment, the sealing element is arranged at a portion of the end face of the first end portion outside the first connecting portion.
[0017] In one embodiment, the gas flow meter includes a gas mass flow meter. Description of the Drawings
[0018] Figure 1 It is a schematic structural diagram of the air permeability testing device in some embodiments.
[0019] Figure 2 is Figure 1 A partially enlarged schematic diagram of the air permeability testing device shown in the dashed box area.
[0020] Figure 3 is Figure 1Schematic structural diagram of the holding handle and the sealing element in the air permeability testing device shown
[0021] Reference numerals:
[0022] 10. Air permeability testing device; 11. Holding handle; 111. Air inlet; 112. Air outlet; 113. Groove; 114. Air duct; 115. First end; 116. First connecting part; 117. Second connecting part; 118. Second end; 12. Gas flowmeter; 13. Sealing element; 14. Hose; 15. Connector; 20. Drop molding die; 21. Air outlet end; 22. Mesh structure Detailed implementation manners
[0023] To make the above objects, features, and advantages of the present application more apparent and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description 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 departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below
[0024] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application
[0025] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined
[0026] In this application, unless otherwise clearly specified or limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0027] In this application, unless otherwise clearly specified or limited, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.
[0028] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation manner.
[0029] Please refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 are schematic structural diagrams of the air permeability testing device 10 in some embodiments, Figure 2 is Figure 1 a partial enlarged schematic diagram of the dotted box area in the air permeability testing device 10 shown in Figure 3 is Figure 1 a schematic structural diagram of the holding handle 11 and the sealing element 13 in the air permeability testing device 10 shown in . The air permeability testing device 10 provided in this application can be used to test the air permeability of the drip molding die 20, for example, to detect the air permeability of the air outlet end 21 when the drip molding die 20 intakes air at the air inlet end.
[0030] In some embodiments, the drop forming die 20 can be a die for cooling and forming an optical glass drop. During the forming process of the optical glass drop, the optical glass drop is dropped into the drop forming die 20, and compressed gas is introduced through the air inlet end of the drop forming die 20. After passing through the interior of the drop forming die 20, the compressed gas is discharged from the air outlet end 21. The compressed gas can form an air curtain on the surface of the forming part of the drop forming die 20, so that the optical glass drop is suspended in the air close to the surface of the drop forming die 20 to avoid contact between the drop and the drop forming die 20, which is beneficial to improving the surface quality of the formed optical glass drop. It can be understood that the actual air permeability of the drop forming die 20 is one of the key process parameters during the drop forming process, and the actual air permeability will affect the forming quality and forming yield of the optical glass drop. However, due to factors such as the assembly accuracy or air permeability difference of the drop forming die 20, it is usually difficult to control the actual air permeability of the traditional drop forming die. The air permeability testing device 10 provided by the present application can be used to accurately and efficiently measure the air permeability of the drop forming die 20, so as to provide a basis for optimizing the drop forming process. For example, according to the requirements of the drop forming process and the test structure of the air permeability testing device 10, the intake pressure and intake flow rate of the air inlet end of the drop forming die 20 are adjusted to improve the drop forming quality and yield.
[0031] Of course, the above is only an example of one application of the air permeability testing device 10 provided by the present application. The air permeability testing device 10 can also be used in any other applicable scenarios that require accurate and efficient detection of air permeability. When the air permeability testing device 10 is used for the drop forming die 20, the drop forming die 20 is not limited to cooling and forming optical glass drops, and can also be used to form drops of any other applicable material.
[0032] In some embodiments, the air permeability testing device 10 includes a holding handle 11, a gas flowmeter 12, and a sealing element 13. An air inlet 111 and an air outlet 112 are respectively provided at two ends of the holding handle 11. The gas flowmeter 12 is communicated with the air inlet 111 and is used to measure the flow rate of the gas flowing out from the air outlet 112. It can be understood that when using the air permeability testing device 10 to conduct an air permeability test, a user can hold the holding handle 11 by hand, so that the air inlet 111 is butted against the air outlet end 21 of the drip molding die 20. The gas discharged from the air outlet end 21 is conducted to the gas flowmeter 12 through the holding handle 11, and the gas flowmeter 12 can measure and display the air permeability in real time. The holding handle 11 has an end face where the air inlet 111 is opened. A groove 113 is provided around the air inlet 111 on the end face. The sealing element 13 is arranged around the air inlet 111. When the air inlet 111 is butted against the air outlet end 21 of the drip molding die 20, the sealing element 13 also surrounds the air outlet end 21 at the same time. A part of the sealing element 13 is embedded in the groove 113, and the other part protrudes from the end face of the holding handle 11 where the air inlet 111 is opened.
[0033] For the above-mentioned air permeability testing device 10, when conducting an air permeability test on the drip molding die 20, it can be held by holding the holding handle 11, and the end face of the holding handle 11 where the air inlet 111 is opened is opposite to the end face of the air outlet end 21 of the drip molding die 20. The air permeability testing device 10 is pressed against the end face of the air outlet end 21 of the drip molding die 20, so that the air inlet 111 is communicated with the air outlet channel of the drip molding die 20. The part of the sealing element 13 protruding from the end face of the holding handle 11 is located between the end face of the holding handle 11 and the end face of the air outlet end 21 of the drip molding die 20, and will be squeezed by the end face of the air permeability testing device 10 and the end face of the air outlet end 21 of the drip molding die 20, which can improve the sealing performance between the air permeability testing device 10 and the drip molding die 20. Thus, the structure of the above-mentioned air permeability testing device 10 is simple, the testing operation is convenient, and the sealing performance between the air permeability testing device 10 and the drip molding die 20 is good during the testing process, which is beneficial to reducing the manufacturing cost of the air permeability testing device 10, improving the testing efficiency and testing accuracy. The air permeability testing device 10 can accurately measure the actual air permeability of the drip molding die 20, provide an accurate reference for the optimization of the drip molding process, and thus is beneficial to improving the drip molding quality and yield. In this application, the sealing element 13 includes but is not limited to any applicable sealing structure such as rubber that can undergo elastic deformation.
[0034] In some embodiments, the holding handle 11 is hollow inside to form an air passage 114 that connects the air inlet 111 and the air outlet 112. The gas entering the holding handle 11 from the air inlet 111 can be transmitted to the air outlet 112 through the air passage 114. The air permeability testing device 10 further includes a hose 14 and a connector 15. The connector 15 is fixedly arranged at one end of the holding handle 11 where the air outlet 112 is provided, and is inserted into the air passage 114 through the air outlet 112 by any suitable fixing method such as threaded connection, snap connection, interference fit, etc. One end of the hose 14 is sleeved with the gas flow meter 12, and the other end communicates with the air outlet 112, and is connected to the connector 15 by any suitable fixing direction such as insertion. By arranging the hose 14 and the connector 15 between the holding handle 11 and the gas flow meter 12, the hose 14 can be adapted to gas flow meters 12 with a variety of different interface specifications, or the hose 14 and the connector 15 with different size specifications can be replaced according to the gas flow meter 12 with different interface specifications, making the maintenance, installation, disassembly and replacement of the gas flow meter 12 more convenient and fast.
[0035] In some embodiments, the inner wall surface of the connector 15 forms a tapered hole, that is to say, the radial dimension of the inner wall surface of the connector 15 gradually decreases in the direction from the air outlet 112 to the air inlet 111 along the axial direction of the holding handle 11, which is beneficial to improving the connection strength and sealing performance between the hose 14 and the connector 15, and is beneficial to further improving the testing accuracy of the air permeability testing device 10.
[0036] In some embodiments, the holding handle 11 includes a first end portion 115, a first connecting portion 116, a second connecting portion 117 and a second end portion 118 that are sequentially connected in the direction from the air inlet 111 to the air outlet 112. The air inlet 111 is provided at the first end portion 115, and the air outlet 112 is provided at the second end portion 118. The end surface of the first end portion 115 facing away from the second end portion 118 can be regarded as the end surface of the holding handle 11 where the air inlet 111 is provided, and the hose 14 is connected to the second end portion 118 through the connector 15. The radial dimension of the first end portion 115 is greater than that of the first connecting portion 116, and the radial dimension of the second end portion 118 is greater than that of the second connecting portion 117. With such a setting, while reducing the occupied space of the holding handle 11, the first end portion 115 and the second end portion 118 also have sufficient radial dimensions, so that the second end portion 118 can meet the connection of connectors 15 and hoses 14 with different specifications, and the first end portion 115 can effectively cover the air outlet end 21 of the drip molding die 20 to achieve accurate testing.
[0037] Further, in some embodiments, the radial dimension of the first connecting portion 116 is greater than that of the second connecting portion 117. That is to say, in the direction from the air outlet 112 to the air inlet 111, the radial dimensions of the second connecting portion 117, the first connecting portion 116, and the first end portion 115 increase in sequence. Such an arrangement enables the first end portion 115 to have a sufficient radial dimension to cover the air outlet ends 21 of different specifications of the drip molding die 20. At the same time, the radial dimension of the first connecting portion 116 is relatively larger than that of the second connecting portion 117, which is beneficial to reducing the radial drop between the first end portion 115 and the first connecting portion 116 and enhancing the overall structural strength. Meanwhile, the radial drop formed between the first connecting portion 116 and the second connecting portion 117 can form more holding positions, facilitating the holding by different users. In some embodiments, the radial dimension of the first connecting portion 116 may be equal to that of the second end portion 118, which is beneficial to improving the appearance integrity of the air permeability testing device 10 and enhancing the user's holding experience.
[0038] Reference Figure 2 shown Figure 2 As shown, the flow path of the air flow between the drip molding die 20 and the air permeability testing device 10 is schematically indicated by a dashed arrow. In some embodiments, the end face of the first end portion 115 facing away from the second end portion 118 is concave to form the air inlet 111. The radial dimension of the air inlet 111 is greater than that of the air passage 114. The side wall of the first end portion 115 defining the air inlet 111 is disposed around the air passage 114. Thus, the air inlet 111 has a sufficiently large size to cover the air outlet ends 21 of different specifications of the drip molding die 20, so as to fully collect and transmit the gas discharged from the air outlet ends 21 of the drip molding die 20 to the air passage 114, which is beneficial to improving the measurement accuracy and application range of the air permeability testing device 10.
[0039] In some embodiments, the sealing element 13 is disposed at a portion of the end face of the first end portion 115 outside the first connecting portion 116, which can adapt to the design of the relatively larger radial dimension of the air inlet 111 relative to the air passage 114, enabling the inner ring of the sealing element 13 to have a sufficient coverage area to effectively seal different specifications of the drip molding die 20 and the first end portion 115, and improving the testing accuracy and application range of the air permeability testing device 10. It can be understood that the sealing element 13 may be generally in a circular ring shape. When the air outlet ends 21 of the drip molding die 20 adopt different shape designs, the sealing element 13 can also be adapted and adjusted to any applicable shape such as a square.
[0040] It should be noted that the drip forming die 20 shown in the drawings of this application is only one example. The air permeability testing device 10 can also be used for any other applicable drip forming dies 20 with different types and different structural designs, as long as the air inlet 111 can correspond to the air outlet end 21 of the drip forming die 20 to fully receive the gas discharged from the drip forming die 20 and realize the measurement of the air permeability. In Figure 1 and Figure 2 In the illustrated embodiment, the air outlet channel of the drip forming die 20 is provided with a mesh structure 22. The mesh structure 22 can be a rotating body structure provided with a plurality of mesh holes, which can divide the air flow into multiple beams to adapt to the forming process of optical glass drops.
[0041] In this application, the type of the gas flowmeter 12 is not limited, as long as it can receive the gas discharged from the hose 14 or directly from the air outlet 112 and measure the gas flow rate to test the air permeability of the drip forming die 20. In some embodiments, the gas flowmeter 12 can be a gas mass flowmeter, which can measure the amount of gas passing through per unit time, so as to obtain the gas flow rate. Measuring with a gas mass flowmeter can be independent of the volume flow rate or velocity according to the mass of gas molecules, and can achieve efficient and accurate testing, further improving the testing efficiency and testing accuracy of the air permeability testing device 10.
[0042] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0043] The above-described embodiments only represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application patent should be subject to the appended claims.
Claims
1. A device for testing the air permeability of a drip forming mold, characterized in that: include: A gripping handle, with an air inlet and an air outlet respectively provided at both ends, the gripping handle having an end surface with the air inlet provided, and the end surface having a groove provided around the air inlet; a gas flow meter, connected to the gas outlet and used to test the flow of the gas flowing out of the gas outlet; and A sealing element is arranged around the air inlet, wherein a portion of the sealing element is embedded in the groove and another portion protrudes from the end surface.
2. The air permeability testing device according to claim 1, characterized in that: The air permeability testing device also includes a hose, one end of which is sleeved with the gas flow meter, and the other end of which is connected to the air outlet.
3. The air permeability testing device according to claim 2, characterized in that: The air permeability testing device also includes a connector, which is fixedly arranged at one end of the holding handle where an air outlet is provided, and the hose is inserted into the connector.
4. The air permeability testing device according to claim 3, characterized in that: The inner wall surface of the connecting head forms a tapered hole.
5. The air permeability testing device according to claim 1, characterized in that: The holding handle includes a first end, a first connecting part, a second connecting part and a second end connected in sequence in the direction from the air inlet to the air outlet, the air inlet is arranged at the first end, the air outlet is arranged at the second end, the radial dimension of the first end is larger than the radial dimension of the first connecting part, and the radial dimension of the second end is larger than the radial dimension of the second connecting part.
6. The air permeability testing device according to claim 5, characterized in that: The radial dimension of the first connecting portion is greater than the radial dimension of the second connecting portion.
7. The air permeability testing device according to claim 5, characterized in that: The radial dimension of the first connecting portion is equal to the radial dimension of the second end portion.
8. The air permeability testing device according to claim 5, characterized in that: The end surface of the first end is concave to form the air inlet, the gripping handle is hollow to form an air passage connecting the air inlet and the air outlet, the radial dimension of the air inlet is larger than the radial dimension of the air passage, and the side wall of the first end defining the air inlet is arranged around the air passage.
9. The air permeability testing device according to claim 5, characterized in that: The sealing element is disposed at a portion where an end surface of the first end portion is located outside the first connecting portion.
10. The air permeability testing device according to any one of claims 1 to 9, characterized in that: The gas flow meter comprises a gas mass flow meter.