A glass blow molding apparatus and method of using the same

Abstract

The application discloses a glass blowing forming equipment and a use method thereof, a combustion device of the glass blowing forming equipment comprising a Venturi premixing unit, a rotational flow mixing cavity, an oxygen adding system and a multi-tube array type furnace head, high-temperature stable combustion is realized through a two-stage internal mixing and grading external mixing structure, and a tempering risk is avoided; and matched tools comprise a bull's eye wheel support and a multi-purpose blowing roller support, the bull's eye wheel support can adjust a blowing rod supporting state, and the multi-purpose blowing roller support can guarantee coaxial positioning of the blowing rod and a connecting rod. The application belongs to the technical field of glass processing, and specifically provides the glass blowing forming equipment and the use method thereof, solves problems of inability of traditional equipment to melt high-boron silicon glass, large volume, insufficient operation precision and the like, has the advantages of equipment miniaturization, flexible operation, wide adaptation range and the like, can reduce a glass art creation threshold, and expands a technical boundary and artistic expressiveness of a small furnace forming process.

Description

Technical Field

[0001] This invention belongs to the field of glass processing technology, specifically referring to a glass blowing molding equipment and its usage method. Background Technology

[0002] Small furnace forming is a glass thermal processing system centered on compact, small-sized kilns. Unlike large blown glass which relies on large furnaces, its technological origins can be traced back to the Faience tradition of ancient Egypt. It is characterized by low-temperature firing at 800–950°C and focuses on the production of small items such as beads and amulets.

[0003] However, with increasing pressure on environmental protection and energy consumption, and advancements in modern glass blowing, lampworking, and kiln casting processes and tools, traditional small-furnace forming technology once faced marginalization. Traditional glass blowing equipment has many shortcomings: conventional furnace heads can only meet the melting requirements of calcium-sodium soft glass, cannot fully melt high borosilicate glass, and have low energy efficiency and the risk of backfire; traditional blowing equipment is bulky, relies on additional worktables, and is not suitable for small-part precision processing; the baton-splitting operation relies on manual skill, and coaxiality is difficult to control precisely, resulting in poor product consistency and low yield.

[0004] Although traditional small furnace processes have achieved some transformation through integration with contemporary technological innovations, existing alternatives still have limitations: the proportionally scaled-down traditional blown kilns cannot reach the melting temperature of high borosilicate glass and have poor mobility; the hydrogen-oxygen fuel heating scheme has high safety risks and is not suitable for non-professional scenarios; the combination of lamp-worker torches and electric kilns has narrow applicability and low processing efficiency; the earthen stove-style small furnace scheme has low heating efficiency, serious pollution, or is only suitable for processing very small parts.

[0005] Therefore, there is an urgent need for a new type of glass thermal processing equipment that combines high-temperature capability, operational flexibility, and forming precision to address the shortcomings of existing technologies. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides a low-cost glass blowing forming equipment and its usage method, solving the problems of traditional equipment being unable to melt high borosilicate glass, having low energy efficiency, high safety risks, large size, poor operational flexibility, and insufficient forming precision. It achieves the glass thermal processing requirements of high-temperature stable combustion, miniaturized equipment integration, and precise and convenient operation.

[0007] The technical solution adopted by the present invention is as follows: The glass blowing forming equipment of the present invention includes a kiln body, a burner and production tools; the burner is located outside the kiln body and is connected to the kiln body; the burner is provided with a gas inlet and an oxygen inlet; the production tools include a bullseye wheel bracket and a multi-purpose blowing roller bracket.

[0008] The burner includes a Venturi premixing unit, a swirl mixing chamber, an oxygenation chamber, and a multi-tube array furnace head;

[0009] The Venturi premixing unit is connected to the gas inlet, which is connected to the gas inlet pipe. One end of the Venturi premixing unit is equipped with an air pipe. The gas in the gas inlet pipe enters the air pipe from the gas inlet and completes the first gas mixing with the air in the Venturi premixing unit to form premixed gas.

[0010] The swirling mixing chamber is connected to one end of the air tube of the Venturi premixing unit. The premixed gas enters the swirling mixing chamber and forms a strong swirling field in the swirling mixing chamber, realizing the second mixing of fuel gas and air to form fuel gas-air premixed gas.

[0011] The oxygenation chamber is connected to the oxygen inlet, and the multi-tube array burner head is located inside the oxygenation chamber. Oxygen from the independent oxygen pipeline is introduced into the oxygenation chamber through the oxygen inlet, and oxygen is injected into the root of the flame through the gaps between the multi-tube array burner heads, thereby achieving a third stage of external mixing of the fuel gas, air premixed gas and oxygen outside the burner head.

[0012] Furthermore, the multi-tube array burner head includes multiple inner nozzles arranged in parallel, with an outer oxygen pipe coaxially sleeved on the outside of each inner nozzle. Multiple sets of outer oxygen pipes are arranged at equal intervals to form an array burner head nozzle. A circumferential gap is formed between the outer wall of the inner nozzle and the inner wall of the outer oxygen pipe as an oxygen delivery channel. The fully mixed gas-air premixed gas is delivered to the inner nozzle and ejected from the top of the inner nozzle to provide a basic gas source for combustion. Oxygen is ejected from the circumferential gap formed between the outer wall of the gas nozzle and the inner wall of the outer oxygen pipe to provide combustion-supporting gas.

[0013] Furthermore, the multi-tube array furnace head is fixed by integral casting, and the casting material meets the high-temperature insulation requirements of over 1200℃.

[0014] Furthermore, the bullseye wheel support is located on the outer side of the kiln opening. The bullseye wheel support includes a support body, two bullseye wheel assemblies, and a manual adjustment mechanism. The two bullseye wheel assemblies are symmetrically arranged at the top of the support body, forming a blowrod support and sliding guide structure. The rolling friction characteristics of the bullseye wheels reduce the sliding resistance of the blowrod, enabling smooth movement of the blowrod. The manual adjustment mechanism is located on the support body, allowing manual adjustment of the support height of the two sets of bullseye wheel assemblies. Based on the lever principle, manual back-and-forth movement optimizes the distribution of the support force points of the blowrod during the flow of fire, achieving balanced force control of the blowrod and reducing the load on manual support.

[0015] Furthermore, the multi-purpose blown roller frame includes a frame body, four sets of bearing assemblies, an optical axis guide rail, and a sliding adjustment mechanism. The supporting working surfaces of the four sets of bearing assemblies are coplanar and maintained on the same preset horizontal line, forming a multi-point support structure for the blown rod. The two sets of bearing assemblies at both ends are fixedly connected to the frame body, while the two sets of bearing assemblies in the middle are adapted to the optical axis guide rail on the frame body through the sliding adjustment mechanism, achieving front-to-back displacement adjustment along the optical axis guide rail to adjust the spacing of the support points and adapt to the support requirements of blown rods and connecting rods of different specifications. The multi-purpose blown roller frame simultaneously supports both the blown rod and the connecting rod. Through the collinear support and limiting of the four sets of bearing assemblies, the blown rod and the connecting rod are kept coaxially aligned, achieving precise positioning of the axis during the blown rod connection operation. This solves the technical problem of traditional glass blowing connection operations relying on manual skill and difficulty in accurately controlling coaxiality, ensuring the coincidence of the axes during connection and improving the consistency of glass blowing processing and product yield.

[0016] A method of using a glass blowing molding device, characterized by comprising the following steps:

[0017] S1. Start the burner: The gas enters through the gas intake pipe and mixes with the air introduced through the air pipe at the set air-fuel ratio through the Venturi effect to complete the first mixing; the premixed gas enters the swirling mixing chamber to form a strong swirling flow, achieving the second uniform mixing; the mixed gas-air premixed gas is sprayed out through the inner nozzle, while oxygen is injected to the root of the flame through the circumferential gap and oxygen replenishment hole of the outer oxygen pipe, completing the third external mixing and combustion.

[0018] S2, Firing: Insert the end of the blow rod with glass into the kiln body. During the firing process, the blow rod slides and rotates smoothly along the bullseye wheel assembly.

[0019] S3. Blowing and Transfer: After firing, remove the glass end of the blow rod from the kiln body and place the blow rod and connecting rod on the four sets of bearing assemblies, ensuring that the two are aligned on the same axis. During the blowing and transfer process, the bearing assemblies rotate synchronously with the blow rod to ensure the alignment of the axes.

[0020] The beneficial effects achieved by the present invention using the above structure are as follows:

[0021] 1. Through a dual-stage internal mixing and graded external mixing structure, combustion is complete, reaching the temperature required to melt high borosilicate glass, while avoiding the risk of backfire and resulting in low pollutant emissions.

[0022] 2. The supporting tool system significantly reduces the size of the operating unit, eliminating the need for an additional workbench and allowing the entire operation to be completed on a regular desktop, making it highly portable.

[0023] 3. The bullseye wheel bracket enables smooth movement and force balance of the blow rod, while the use of multiple blow roller brackets ensures coaxiality of the connecting rods, reduces the difficulty of manufacturing complex shapes, and improves product consistency and yield.

[0024] 4. It can process both borosilicate and sodium calcium glass, and is compatible with blow bars of different specifications to meet the blowing needs of glass products of all sizes, thus promoting the popularization of glass technology. Attached Figure Description

[0025] Figure 1 This is a perspective view of the glass blowing equipment proposed in this solution;

[0026] Figure 2 The three-dimensional kiln body of the glass blowing equipment proposed in this scheme. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the burner structure for the glass blowing equipment proposed in this scheme. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the burner structure for the glass blowing equipment proposed in this scheme. Figure 2 ;

[0029] Figure 5 This is a three-dimensional view of the bullseye wheel support for the glass blowing equipment proposed in this solution;

[0030] Figure 6 This is a perspective view of the multi-purpose blowing roller frame of the glass blowing molding equipment proposed in this scheme.

[0031] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: 1. Kiln body; 2. Burner; 3. Production tool; 21. Gas inlet; 22. Oxygen inlet; 23. Venturi premixing unit; 24. Swirl mixing chamber; 25. Oxygen addition chamber; 26. Multi-tube array furnace head; 31. Bullseye wheel support; 32. Multi-purpose blowing roller frame; 311. Support body; 312. Bullseye wheel assembly; 313. Manual adjustment mechanism; 321. Frame; 322. Bearing assembly; 323. Optical axis guide rail; 324. Sliding adjustment mechanism. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] Example 1:

[0034] like Figures 1-6As shown, the glass blowing equipment proposed in this solution includes a furnace body 1, a burner 2, and production tools 3; the burner 2 is located outside the furnace body 1 and is connected to the furnace body 1; the burner 2 is provided with a gas inlet 21 and an oxygen inlet 22; the production tools 3 include a bullseye wheel bracket 31 and a multi-purpose blowing roller bracket 32.

[0035] like Figures 2-4 As shown, the burner 2 includes a Venturi premixing unit 23, a swirl mixing chamber 24, an oxygenation chamber 25, and a multi-tube array burner head 26; the Venturi premixing unit 23 is connected to the gas inlet 21, the gas inlet 21 is connected to the gas inlet pipe, and one end of the Venturi premixing unit 23 is provided with an air pipe. The gas in the gas inlet pipe enters the air pipe from the gas inlet 21 and completes the first gas mixing with the air in the Venturi premixing unit 23 to form a premixed gas;

[0036] The swirling mixing chamber 24 is connected to one end of the air pipe of the Venturi premixing unit 23. The premixed gas enters the swirling mixing chamber 24 and forms a strong swirling field in the swirling mixing chamber 24, realizing the second mixing of fuel gas and air to form fuel gas-air premixed gas.

[0037] The oxygenation chamber 25 is connected to the oxygen inlet 22. The multi-tube array burner head 26 is located in the oxygenation chamber 25. Oxygen in the independent oxygen pipeline is introduced into the oxygenation chamber 25 through the oxygen inlet 22. Oxygen is injected into the root of the flame through the gaps of the multi-tube array burner head 26 to achieve the third stage of external mixing of fuel gas, air premixed gas and oxygen outside the burner head.

[0038] The multi-tube array burner head 26 includes multiple inner nozzles arranged in parallel. An outer oxygen pipe is coaxially sleeved on the outside of each inner nozzle. Multiple sets of outer oxygen pipes are arranged at equal intervals to form an array-type burner head nozzle. A circumferential gap is formed between the outer wall of the inner nozzle and the inner wall of the outer oxygen pipe, serving as an oxygen delivery channel. A fully mixed gas-air premixed gas is delivered to the inner nozzle and ejected from the top of the inner nozzle, providing a basic gas source for combustion. Oxygen is ejected from the circumferential gap between the outer wall of the gas nozzle and the inner wall of the outer oxygen pipe, providing combustion-supporting gas. This is achieved by the coaxial sleeve... The annular gap oxygen supply structure enables staged external mixing of oxygen on the outside of the furnace head, significantly increasing the overall combustion temperature. The external mixing oxygen supply mode avoids safety risks such as backfire that can easily be caused by premixed oxygen, thus improving the safety of the unit's operation. Compared with conventional furnace head designs, this furnace head achieves a higher temperature output. Conventional furnace heads can usually only meet the melting requirements of calcium-sodium soft glass, while this unit reaches the temperature conditions for melting high borosilicate glass, meeting the processing and forming requirements of high borosilicate glass and broadening the applicable scenarios of the furnace head. At the same time, the overall combustion completeness is improved, effectively increasing combustion efficiency and reducing pollutant emissions.

[0039] The multi-tube array furnace head 26 is fixed by integral casting, and the casting material meets the high-temperature insulation requirements of over 1200℃.

[0040] like Figure 1 and Figure 5 As shown, the bullseye wheel bracket 31 is located on the outer side of the kiln opening. The bullseye wheel bracket 31 includes a bracket body 311, two bullseye wheel assemblies 312, and a manual adjustment mechanism 313. The two bullseye wheel assemblies 312 are symmetrically arranged at the top of the bracket body 311, forming a blowro rod support and sliding guide structure. The rolling friction characteristics of the bullseye wheels reduce the sliding resistance of the blowro rod, enabling smooth movement of the blowro rod. The manual adjustment mechanism 313 is located on the bracket body 311, allowing manual adjustment of the support height of the two sets of bullseye wheel assemblies 312. Based on the lever principle, manual back-and-forth movement optimizes the distribution of the support force points of the blowro rod during the flow of fire, achieving balanced control of the blowro rod force and reducing the load on the manual support.

[0041] like Figure 6 As shown, the multi-purpose blown roller frame 32 includes a frame 321, four sets of bearing assemblies 322, an optical axis guide rail 323, and a sliding adjustment mechanism 324. The supporting working surfaces of the four sets of bearing assemblies 322 are coplanar and maintained on the same preset horizontal line, forming a multi-point support structure for the blown roller. The two sets of bearing assemblies at both ends are fixedly connected to the frame 321, while the two sets of bearing assemblies in the middle are adapted to the optical axis guide rail 323 on the frame 321 through the sliding adjustment mechanism 324, and move along the optical axis guide rail 323. The system allows for front-to-back displacement adjustment, thereby adjusting the spacing between support points to accommodate the support requirements of blow rods and connectors of different specifications. The multi-purpose blown roller frame 32 simultaneously supports both the blow rod and the connector. Through the collinear support and limiting of four sets of bearing assemblies 322, the blow rod and the connector are kept coaxially aligned, achieving precise axial positioning for the blow-to-connection operation. This solves the technical problems of traditional glass blowing connector operations relying on manual skill and difficulty in accurately controlling coaxiality, ensuring the coincidence of the two axes during connector connection, and improving the consistency of glass blowing processing and the yield rate of products.

[0042] The kiln is scaled down proportionally, and the overall process and tools are also scaled down proportionally, while the core operating mode remains unchanged.

[0043] Example 2: Using hydrogen as fuel and oxygen as an oxidizer, a high-temperature flame is formed by combining hydrogen and oxygen guns. A foot-operated control structure is often used to locally heat the glass as needed.

[0044] Example 3: A small lampworker's torch is used as the heating source, and a small blowtorch is used for processing. The tempering process is completed in an electric kiln. The processed products are mainly small glass products.

[0045] Example 4: Using a simple small chimney, the glass is heated by a local flame above the furnace, and the processing method is carried out in an up-and-down axial direction.

[0046] Example 5: Using coal as the primary fuel to provide a heat source.

[0047] The method of using the above-mentioned glass blowing molding equipment includes the following steps:

[0048] S1. Start the burner: The gas enters through the gas inlet pipe and mixes with the air introduced through the air pipe at the set air-fuel ratio through the Venturi effect to complete the first mixing; the premixed gas enters the swirling mixing chamber 24 to form a strong swirling flow, achieving the second uniform mixing; the mixed gas-air premixed gas is sprayed out through the inner nozzle, while oxygen is injected to the root of the flame through the circumferential gap and oxygen replenishment hole of the outer oxygen pipe, completing the third external mixing and combustion; the combustion temperature is stably reached at 1200-1300℃, meeting the melting requirements of high borosilicate glass.

[0049] S2. Firing: Place the bullseye wheel support 31 on the outside of the opening end of the kiln body 1, place the blow rod for blowing glass between the two sets of bullseye wheel assemblies 312, adjust the support height through the manual adjustment mechanism 313 to ensure that the blow rod is balanced under force, and then insert the end of the blow rod with glass into the kiln body 1; during the firing process, the blow rod slides and rotates smoothly along the bullseye wheel assembly 312, reducing the labor intensity of the operators.

[0050] S3. Blowing and Transfer: Based on the length of the blow rod and the connecting rod, adjust the position of the two sets of bearing assemblies 322 in the middle through the sliding adjustment mechanism 324; after firing, remove the glass end of the blow rod from the kiln body 1, and place the blow rod and the connecting rod on the four sets of bearing assemblies 322 to ensure that the two are aligned on the same axis; during the blowing and transfer process, the bearing assembly 322 rotates synchronously with the blow rod to ensure the overlap of the axis and improve the processing accuracy.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A glass blowing forming device, characterized in that: It includes a kiln body, a burner, and production tools; the burner is located outside the kiln body and is connected to the kiln body. The burner is provided with a gas inlet and an oxygen inlet. The production tools include a bullseye wheel bracket and a multi-purpose blown roller bracket. The burner includes a Venturi premixing unit, a swirl mixing chamber, an oxygenation chamber, and a multi-tube array furnace head; The Venturi premixing unit is connected to the gas inlet, which is connected to the gas inlet pipe. One end of the Venturi premixing unit is equipped with an air pipe. The gas in the gas inlet pipe enters the air pipe from the gas inlet and completes the first gas mixing with the air in the Venturi premixing unit. The swirling mixing chamber is connected to one end of the air pipe of the Venturi premixing unit. The premixed gas enters the swirling mixing chamber and forms a strong swirling field inside the swirling mixing chamber, realizing the second mixing of fuel gas and air. The oxygenation chamber is connected to the oxygen inlet, and the multi-tube array burner head is located inside the oxygenation chamber. Oxygen from the independent oxygen pipeline is introduced into the oxygenation chamber through the oxygen inlet, and oxygen is injected into the root of the flame through the gaps between the multi-tube array burner heads, thereby achieving a third mixing of the premixed gas and air outside the burner head with oxygen.

2. The glass blowing forming equipment according to claim 1, characterized in that: The multi-tube array burner head includes multiple inner nozzles arranged in parallel. An outer oxygen pipe is coaxially sleeved on the outside of each inner nozzle. Multiple sets of outer oxygen pipes are arranged at equal intervals to form an array burner head nozzle. A circumferential gap is formed between the outer wall of the inner nozzle and the inner wall of the outer oxygen pipe as an oxygen delivery channel. The fully mixed gas-air premixed gas is delivered to the inner nozzle and ejected from the top of the inner nozzle to provide a basic gas source for combustion. Oxygen is ejected from the circumferential gap formed between the outer wall of the gas nozzle and the inner wall of the outer oxygen pipe to provide combustion-supporting gas.

3. The glass blowing equipment according to claim 1, characterized in that: The multi-tube array furnace head is fixed by integral casting, and the casting material meets the high-temperature insulation requirements of over 1200℃.

4. The glass blowing forming equipment according to claim 1, characterized in that: The bullseye wheel bracket is located on the outside of the kiln opening. The bullseye wheel bracket includes a bracket body, two bullseye wheel assemblies, and a manual adjustment mechanism. The two bullseye wheel assemblies are symmetrically arranged at the top of the bracket body, forming a blow rod support and sliding guide structure. The rolling friction characteristics of the bullseye wheels reduce the sliding resistance of the blow rod, enabling smooth movement of the blow rod. The manual adjustment mechanism is located on the bracket body, allowing manual adjustment of the support height of the two sets of bullseye wheel assemblies.

5. The glass blowing equipment according to claim 1, characterized in that: The multi-purpose blown roller frame includes a frame body, four sets of bearing assemblies, an optical axis guide rail, and a sliding adjustment mechanism. The supporting working surfaces of the four sets of bearing assemblies are arranged on the same plane and maintained on the same preset horizontal line, forming a multi-point support structure for the blown roller. The two sets of bearing assemblies at both ends are fixedly connected to the frame body, and the two sets of bearing assemblies in the middle are adapted to the optical axis guide rail on the frame body through the sliding adjustment mechanism, so as to realize the front and rear displacement adjustment along the optical axis guide rail.

6. A method of using a glass blowing molding equipment according to claims 1-5, characterized in that, Includes the following steps: S1. Start the burner: The fuel gas enters through the fuel gas intake pipe and mixes with the air introduced through the air pipe at the set air-fuel ratio through the Venturi effect to complete the first mixing. The premixed gas enters the swirling mixing chamber to form a strong swirling flow, achieving a second uniform mixing; the mixed gas-air premixed gas is ejected through the inner nozzle, while oxygen is injected to the root of the flame through the circumferential gap and oxygen replenishment hole of the outer oxygen pipe, completing the third external mixing and combustion. S2, Firing: Insert the end of the blow rod with glass into the kiln body. During the firing process, the blow rod slides and rotates smoothly along the bullseye wheel assembly. S3. Blowing and Transfer: After firing, remove the glass end of the blow rod from the kiln body and place the blow rod and connecting rod on the four sets of bearing assemblies, ensuring that the two are aligned on the same axis. During the blowing and transfer process, the bearing assemblies rotate synchronously with the blow rod to ensure the alignment of the axes.

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