Integrated flow guide piece of lighter and preparation method of integrated flow guide piece

Abstract

The invention provides an integrated flow guide piece of a lighter and a preparation method thereof, and relates to the field of lighters, the integrated flow guide piece of the lighter and the preparation method thereof comprise a flow guide assembly and a flame adjusting assembly, the structure is simplified by replacing a traditional metal material with a plastic material, and installation is more convenient and faster; meanwhile, procedures related to a metal manufacturing procedure are omitted, the production cost and the installation and inspection difficulty of the drainage assembly are greatly reduced, the production efficiency and the yield are improved, the flame adjusting assembly can be connected through the ultrasonic welding technology after the plastic material is adopted, the manufacturing cost of the flame adjusting assembly made of the non-sponge material is reduced, and the production efficiency is improved. In addition, the original space occupied by the metal core sleeve is allowed to be optimized to be in interference close fit with the gas outlet valve mounting cavity during design, the cost of mounting jigs of different types of lighters is saved through the mounting procedure of the front drainage assembly, and the assembly efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of lighters, and particularly to an integrated flow guide member for a lighter and a preparation method thereof. Background Art

[0002] The flow guide members of refillable lighters and igniting guns include: a flame adjustment assembly for adjusting the flame size (the original flame adjustment assembly was mostly made of sponge material, so it was commonly called sponge, followed by non-woven fabric sheets, constant flow breathable membrane sheets, and composite sheets formed by combining the three in various forms, etc.), a sponge seat, an aluminum core sleeve, and a drainage core. The function of the sponge is that the air inlet and outlet valve is tightened or loosened by a thread to change the pressure on the sponge, resulting in a change in density, so that the change in the gas flow rate through the dense holes in the radial direction adjusts the flame size. The sponge seat plays a role in supporting the air outlet valve and applying pressure to the flame adjustment piece, and also isolates the axial air flow. The aluminum core sleeve is wrapped around the drainage core and also plays a role in bearing force and isolating the drainage core from bearing force (the porous loose body of the drainage core cannot be used for support). At the same time, the inner cavity T-shaped fits with the outer T-shaped of the drainage core to fix the drainage core after it is installed, so that the drainage core does not fall off. The drainage core is a porous loose body, and its function is to absorb liquefied gas and increase the gasification area, gasification speed and stability, so that the lighter flame is durable and stable;

[0003] In recent years, most sponges and sponge seats are integrally pressed by artificial means using jigs in multiple simple operations before leaving the factory. The rest are all loose parts. After being sold to lighter manufacturers, they are also manually installed into the lighters in three steps in sequence using jigs. During this process, due to the small size, large variety, and complex structure of the parts, there are problems such as a large number of equipment, jigs, and assembly processes in the assembly process, resulting in a high rejection rate in production. This is because each time the parts are placed, it is necessary to check whether the parts are missing, over-placed, reversed, or placed sideways. In addition, it is very difficult for workers paid by piecework in actual production to control the rejection rate. Therefore, this process has the highest rejection rate in lighter production. It is also because the lighter has to be inflated and then put on a flame inspection machine to detect defective products, which wastes gas. At the same time, this process of placing the four internal parts is also one of the two processes that current lighter factories cannot achieve highly automated production. The reasons are small parts, large variety, and poor product consistency. The best way to solve the above problems is to produce a part with a lower cost that can be integrally formed into a larger and more regular finished product. Among them, it is very unrealistic to achieve mass production of the integrally formed flame adjustment piece due to process problems. Therefore, only the other three parts can be combined. The difficulty in combining the other three parts into one body is that the drainage core is a porous loose body and cannot bear force, and the core sleeve and the sponge seat need to be isolated in terms of function. Therefore, existing products only produce the drainage core separately and then combine it with other parts. The quality of the lighter flame mainly depends on the combination of the flame adjustment assembly. Secondly, for the drainage assembly, whether the gas or liquid introduced is stable in terms of internal pressure during liquefaction of the gas. Obviously, when multiple parts are combined into one body on a common machine, various combination gaps provide conditions for liquid adsorption;

[0004] Referring to the existing Chinese published invention CN110671718A and the utility model CN222688255U, due to various reasons such as cost, the four-piece loose products when lighters were first introduced have been continuously used in the market. The wick is a necessary part and has the largest volume. The aluminum sponge seat and the aluminum core sleeve actually exist as support brackets because the wick cannot bear force. Therefore, in order to make the sponge seat and the core sleeve parts have mechanical strength that does not deform under stress, it is necessary to change the production process of the wick. The existing wick is formed by injecting plastic powder into a mold and directly sintering it in an oven under normal pressure and then cooling. It is difficult to achieve the purpose of products with different mechanical strengths within the same mold.

[0005] Therefore, it is necessary to provide a new integrated flow guide part for lighters and its preparation method to solve the above technical problems. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides an integrated flow guide part for lighters and its preparation method.

[0007] The integrated flow guide part for lighters and its preparation method provided by the present invention include: the flow guide component and the flame adjustment component, and the flame adjustment component is combined at the top of the flow guide component to form a combined body;

[0008] The flow guide component includes a sponge seat, a core sleeve and a wick. The bottom end of the sponge seat is integrally and fixedly connected to the top end of the core sleeve, the top end of the wick is integrally and fixedly connected to the bottom end of the core sleeve. The inside of the sponge seat is solid, and a plurality of dense holes are densely arranged inside the core sleeve and the wick. However, the number of the dense holes inside the core sleeve is less than that inside the wick, and the cross-sectional area of the end of the wick adjacent to the core sleeve is larger than the cross-sectional area of the end of the wick far from the core sleeve, showing a reduced-diameter change.

[0009] Preferably, the core sleeve is provided with communicating dense holes, and the lower end face of the core sleeve is formed with an uneven and rough surface by die pressing.

[0010] Preferably, a metal heat conduction column is embedded at the coaxial center between the core sleeve and the sponge seat. The flame adjustment component is press-fitted and inserted on the end protruding from the sponge seat, and the end of the heat conduction column far from the sponge seat is melt-embedded inside the sponge seat and the core sleeve.

[0011] Preferably, a heat conduction column is embedded at the coaxial center between the core sleeve and the sponge seat, and the end of the heat conduction column far from the sponge seat is press-fitted and inserted with the flame adjustment component. A gear column is fixedly sleeved at the connection between the core sleeve and the wick, and the top end of the gear column is in contact with the bottom end of the core sleeve.

[0012] Preferably, the drainage core is a rod-shaped or tubular plastic body formed by fusing plastic filaments, with a tight and porous surface and a loose interior.

[0013] Preferably, the drainage core is a rod-shaped or tubular plastic body formed by fusing plastic filaments mixed with plastic powder, with a tight and porous surface and a loose interior.

[0014] Preferably, a separating ring protruding from the upper end face is provided on the upper end face of the sponge seat. A flame adjustment component is arranged on the separating ring. The outer ring of the flame adjustment component is adhesively bonded to the outer ring of the top of the sponge seat by hot melting. A sealing ring is sleeved outside the core sleeve.

[0015] Preferably, for the flame adjustment component, the bottom surface of the flame adjustment component is adhesively bonded to the top surface of the sponge seat by hot melting. An installation round groove is formed at the communicating part of the centers of the sponge seat and the core sleeve. A constant flow membrane is arranged at the bottom end of the installation round groove. An annular sealing and fixing body is arranged on the constant flow membrane. The upper end face of the sealing and fixing body protrudes from the top plane of the sponge seat, and the sealing and fixing body is in interference fit inside the installation round groove.

[0016] Another aspect of the present invention provides a preparation method for the integrated flow guide piece of a lighter. Based on the integrated flow guide piece of the lighter, the preparation method for the integrated flow guide piece of the lighter includes the following steps:

[0017] S101: Place plastic powder premixed with alumina powder into the mold cavity of the drainage component;

[0018] S102: Heat the mold to reach the melting temperature of the plastic powder;

[0019] S103: Use a pressure column to pressurize and heat the plastic powder at the position of the core sleeve and the sponge seat in the mold cavity at the top end of the core sleeve, so that the plastic powder at the sponge seat part is sintered into a tight entity without connection holes, and the plastic powder at the core sleeve part and the drainage core part forms a plurality of interconnected multi-dense-hole plastic sintered bodies;

[0020] S104: Keep the pressure and cool to demold into plastic parts with different densities in multiple parts;

[0021] S105: Ultrasonically hot melt and compound the plastic part obtained in step S104 with the flame adjustment component to form the integrated flow guide piece of the lighter.

[0022] Another aspect of the present invention provides a preparation method for the integrated flow guide piece of a lighter. Based on the integrated flow guide piece of the lighter, the preparation method for the integrated flow guide piece of the lighter includes the following steps:

[0023] S201: Melt-spray and draw an easily drawable plastic to form filaments;

[0024] S202, winding the filament onto a take-up wheel;

[0025] S203, heating and tightening the filaments through the bell mouth of a fiber sintering rod-making machine into a plastic rod or tube with a tight outer wall and holes and a loose inner wall;

[0026] S204, adding plastic powder to the bell mouth of the sintering rod making machine at the same time, so that the plastic powder is synchronously brought into the mixed sintering;

[0027] S205, using a rod making machine to synchronously cut plastic rods or tubes of a predetermined length;

[0028] S206, using a vibrating screen to sieve the plastic rods cut in step S204 into a hot pressing mold;

[0029] S207, the heated hot press uses a male mold column to pressurize the heated plastic rod at one end, so that the softened core sleeve part and the sponge seat part are cooled to form a compact and non-porous state, that is, the lighter drainage component is obtained.

[0030] Compared with the related art, the integrated flow guide member for lighters and the preparation method thereof provided by the present invention have the following beneficial effects:

[0031] 1. Integrate multiple small guide components into a single large component, and combine them with the flame adjustment component to form an integrated guide piece. This integrated design ensures that there will be no reverse or lateral installation problems in the cavity of a small lighter, as well as problems with placing too little or too much. It reduces the number of parts and the complexity and frequency of assembly inspections, thereby significantly reducing production costs and improving efficiency and yield rate.

[0032] 2. Replace the original metal material with plastic material, and the related metal process is omitted. The two aluminum products, the sponge seat and the core sleeve, are completely replaced by plastic and integrally formed with the drainage core. The improved method reduces the production cost and difficulty, and no metal scraps are generated. The original structural aluminum material parts are difficult to replace with plastic because the parts are too small (the total weight of 10,000 sponge seats is only about 130g, and the total weight of 10,000 core sleeves of common models is about 200g). If the material thickness is too thin, it is difficult to support the extrusion pressure of the fire regulating valve without collapse, deformation and cracking if plastic is used alone. The improved structure is that the sponge seat, the core sleeve, and the big end of the drainage core become a solid rubber whole. Compared with the porous loose material of the original structure of the sponge seat, the center part of the core sleeve, and the big end of the drainage core, the material thickness in all directions has increased several times. Therefore, after changing to plastic solid rubber, the structural strength is sufficient to withstand the pressure of the fire regulating valve squeezing the sponge.

[0033] 3. The non-woven fabric flame regulator can make the lighter flame more stable, reducing flame variation and flashback. However, due to reasons such as the smaller diameter of the non-woven fabric filaments, mutual adhesion that is not firm, etc., there are often uncut filaments at the cross-section during the punching of the middle hole, making it difficult to separate the finished product from the scrap. After the sponge seat and the core sleeve, two aluminum products, are replaced by plastic and integrally formed, ultrasonic waves can melt-cut the flame regulator from the large non-woven fabric and fuse it onto the sponge seat at the same time, without falling off. It also eliminates the high cost of punching the middle hole in the process of having an interference fit with a through hole in the middle of the non-woven fabric flame regulator. This can make the price of the non-woven fabric flame regulator currently used in high-end lighters approach that of the ordinary sponge flame regulator several times. It is also beneficial to improve the overall quality of the lighter. At the same time, it solves the problem that when the flame regulator component is combined with the drainage component using the interference fit process, the flame regulator component, being an elastic soft body, is easily separated from the drainage component.

[0034] 4. The core sleeve is replaced by plastic and integrally formed with the drainage core. Without the occupation of the core sleeve, the diameter of the drainage core can be increased from a maximum of 2.0 mm when there is a core sleeve occupation to 2.9 mm when there is no occupation, greatly enhancing the bending resistance of the drainage core. During installation, it is not easy to get stuck due to bending, and it also solves the biggest problem of poor part consistency for the automated production of the installation process of the flow guide component.

[0035] 5. The core sleeve is replaced by plastic and integrally formed with the drainage core. Without the occupation of the core sleeve, a gear-shaped column can be set at the connection between the core sleeve and the drainage core. The top of the gear column fits against the bottom end of the core sleeve, and the outer circle of the gear-shaped column is inserted into the inner circle of the air outlet hole at the lower end of the air outlet valve installation cavity of the lighter with an interference fit, making the flow guide component and the inner circle of the air outlet valve installation integrated. The inner circle of the air outlet valve installation is a common part. In the past, the inner circle of the air outlet valve was first ultrasonically welded to the lighter casing, and then the flow guide component was installed. Now, the flow guide component can be integrated with the inner circle of the air outlet valve installation and then welded to the lighter casing. Installing the flow guide component on the inner circle of the air outlet valve has the following advantages compared to welding the inner circle of the air outlet valve to the casings of various models of lighters and then installing the flow guide component: First, the fixture is universal, and there is no need to change the fixture due to different distances between lighters. Second, the inner circle of the air outlet valve has a smaller volume, and more parts can be screened on the same area fixture at one time, thus greatly improving production efficiency. Third, due to the good consistency of the common parts of the inner circle of the air outlet valve, the flow guide component can be installed automatically.

[0036] 6. When the core sleeve of the drainage assembly is made into a non-porous solid, the lower end face of the core sleeve is a rough surface formed by molding. The rough surface is installed in the inner ring of the air-inlet and outlet valve installation and forms a gas-permeable surface with the upper plane of the inner ring drainage assembly installation hole. When inflation is completed, this surface is connected to the air cavity without a large groove, which can effectively reduce the possibility of liquid in the air cavity flowing to the flame adjustment assembly when the lighter is inverted and not ignited. Because the liquid is a little viscous, it will not pass through the pores and gaps at once when there is no pressure, preventing the flame adjustment assembly from absorbing too much liquid. When ignition occurs, the liquid blocks the drainage core gasification channel and makes the drainage core gasification function invalid. When the flame adjustment assembly cannot be gasified, the flame jumps in a small fire, and the spray particles explode in a large fire.

[0037] 7. Constant flow breathable membrane is a plastic membrane with nano-scale pores that can only pass air but not liquid. The flame adjustment component of the constant flow breathable membrane composited with non-woven fabric is mostly used in lighters with high requirements exported to Europe and the United States. However, the first disadvantage is that the flame height is constant due to the area, making the flame unadjustable. The second disadvantage is that the flame cannot be ignited or the flame is small due to low temperature or low gas volume. The third disadvantage is that the flame adjustment component of the constant flow breathable membrane is installed on the constant flow outlet valve. Because it cannot pass liquefied gas liquid during inflation, an inflation valve is generally installed at the bottom of the lighter. At present, the constant flow breathable membrane flame adjustment component is generally installed on the guide piece, which generally increases the number of parts, and the structure and installation are more complicated. In the sixth embodiment of the present invention, the core sleeve and the guide core are integrally formed, and a hardened rubber clamping ring is provided to combine the functions of clamping and sealing, so that the number of parts is reduced, the installation is easier, and the cost is lower. The constant flow breathable membrane flame adjustment component is installed on the guide piece mainly to enable inflation from the outlet valve. In the fifth embodiment of the present invention, a separating ring higher than the end face is provided under the breathable membrane flame adjustment component. When the flame is adjusted The whole ring is tightened to tighten the outlet valve so that the lower end face of the outlet valve is pressed against the separation ring, and at the same time, the pores of the constant flow breathable membrane flame adjustment component in the middle are pressed, and the communication between the inner and outer cavities of the lower end face is closed. At this time, the gas passes from the inner cavity upward through the lower non-woven fabric of the flame adjustment component, then through the middle breathable membrane, and then through the upper non-woven fabric, that is, the gas is only discharged from the inner cavity. At this time, the flame height is 2CM to 3CM. When the valve is loosened by twisting the flame adjustment ring to loosen the lower end face of the outlet valve from the constant flow breathable membrane flame adjustment component on the separation ring, the gas The liquid can flow radially from the separating ring to the outer cavity, then flow axially through the full-area constant-flow breathable membrane, and then be guided out through the upper non-woven fabric. At this time, the flame height is 3CM to 4CM, and the gap between the upper and lower layers of non-woven fabric of the separating ring can be adjusted by twisting the flame adjustment ring so that the flame can be adjusted between 2CM and 4CM. This design not only limits large fires and ensures safety by adjusting to small fires during normal use, but also allows users to adjust to achieve rapid ignition when they want to, and also solves the problem of not being able to ignite in cold weather and needing to preheat in the hand.

[0038] 8. A metal heat conducting column is coaxially embedded between the core sleeve and the sponge seat, which can accelerate the conduction of a large amount of heat absorbed when the liquefied gas liquid is liquefied into gas during a large fire, optimizing the problem of slow flameout after a large fire of the lighter.

[0039] 9. In the preparation process, first place the plastic powder in the mold cavity, heat the mold to the melting temperature of the plastic powder, and then use the corresponding pressing column to pressurize and heat specific parts, so as to obtain different effects with different densities in different parts of the same product. The liquid storage gap of the multi-part combination is smaller, which is convenient for subsequent fuel gasification and transmission. Compared with the multi-part combination that adapts to different lighter models, this method of replacing the corresponding pressing column is simpler and more economical.

[0040] 10. The method of producing by drawing a rod can be continuously automated, and workers do not need to take high-temperature molds at high ambient temperatures. Moreover, this method does not require heating and cooling each porous mold once for each type of mold produced, saving a large amount of electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of the drainage component and the flame adjustment component in Embodiment 1 provided by the present invention; Figure 2 It is a schematic diagram of the sectional split structure of the drainage component and the flame adjustment component in Embodiment 1 provided by the present invention; Figure 3 It is a schematic diagram of the overall structure of the drainage component and the flame adjustment component in Embodiment 2 provided by the present invention; Figure 4 It is a schematic diagram of the sectional split structure of the drainage component and the flame adjustment component in Embodiment 2 provided by the present invention; Figure 5 It is a schematic diagram of the overall structure of the drainage component and the flame adjustment component in Embodiment 3 provided by the present invention; Figure 6 It is a schematic diagram of the sectional split structure of the drainage component and the flame adjustment component in Embodiment 3 provided by the present invention; Figure 7 It is a schematic diagram of the overall structure of the drainage component and the flame adjustment component in Embodiment 4 provided by the present invention; Figure 8 It is a schematic diagram of the sectional split structure of the drainage component and the flame adjustment component in Embodiment 4 provided by the present invention; Figure 9 It is a schematic diagram of the overall structure of the drainage component and the flame adjustment component in Embodiment 5 provided by the present invention; Figure 10 It is a schematic diagram of the sectional split structure of the drainage component and the flame adjustment component in Embodiment 5 provided by the present invention; Figure 11The overall structural schematic diagram of the drainage component and the flame adjustment component in Embodiment VI provided by the present invention; Figure 12 The sectional split structural schematic diagram of the drainage component and the flame adjustment component in Embodiment VI provided by the present invention; Figure 13 The process flow block diagram of the preparation method of the integrated flow guide of the lighter provided by the present invention; Figure 14 The process flow block diagram of the preparation method of the integrated flow guide of the lighter provided by the present invention.

[0053] Reference numerals in the figure: 1, drainage component; 11, sponge seat; 12, wick sleeve; 13, drainage wick; 16, heat conducting column; 17, gear column; 18, separating ring; 19, sealing ring; 2, flame adjustment component; 3, installation circular groove; 4, constant flow film; 5, sealing and fixing body. Detailed implementation manners

[0054] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0055] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 , where Figure 1 is the overall structural schematic diagram of the drainage component and the flame adjustment component in Embodiment I provided by the present invention; Figure 2 is the sectional split structural schematic diagram of the drainage component and the flame adjustment component in Embodiment I provided by the present invention; Figure 3 is the overall structural schematic diagram of the drainage component and the flame adjustment component in Embodiment II provided by the present invention; Figure 4 is the sectional split structural schematic diagram of the drainage component and the flame adjustment component in Embodiment II provided by the present invention; Figure 5 is the overall structural schematic diagram of the drainage component and the flame adjustment component in Embodiment III provided by the present invention; Figure 6Schematic diagram of the sectional split structure of the drainage component and the flame adjustment component in Embodiment 3 provided by the present invention; Figure 7 Schematic diagram of the overall structure of the drainage component and the flame adjustment component in Embodiment 4 provided by the present invention; Figure 8 Schematic diagram of the sectional split structure of the drainage component and the flame adjustment component in Embodiment 4 provided by the present invention; Figure 9 Schematic diagram of the overall structure of the drainage component and the flame adjustment component in Embodiment 5 provided by the present invention; Figure 10 Schematic diagram of the sectional split structure of the drainage component and the flame adjustment component in Embodiment 5 provided by the present invention; Figure 11 Schematic diagram of the overall structure of the drainage component and the flame adjustment component in Embodiment 6 provided by the present invention; Figure 12 Schematic diagram of the sectional split structure of the drainage component and the flame adjustment component in Embodiment 6 provided by the present invention.

[0056] In the specific implementation process:

[0057] Embodiment 1, as Figure 1 - Figure 2 shown, the integrated flow guide of the lighter provided by the present invention includes a drainage component 1 and a flame adjustment component 2. The flame adjustment component 2 is combined at the top end of the drainage component to form a combined body;

[0058] The drainage component 1 includes a sponge seat 11, a core sleeve 12, and a drainage core 13. The bottom end of the sponge seat 11 is integrally and fixedly connected to the top end of the core sleeve 12. The top end of the drainage core 13 is integrally and fixedly connected to the bottom end of the core sleeve 12. The inside of the sponge seat 11 is solid. A plurality of capillary holes are densely arranged inside the core sleeve 12 and inside the drainage core 13. However, the number of capillary holes inside the core sleeve 12 is less than that inside the drainage core 13. And the central axes of the core sleeve 12 and the drainage core 13 are collinear. And the cross-sectional area of one end of the drainage core 13 adjacent to the core sleeve 12 is larger than that of the end of the drainage core 13 away from the core sleeve 12, showing a reduced-diameter change;

[0059] It should be noted that the commonly used flame adjustment component 2 includes a sponge sheet, a non-woven fabric sheet, a constant-flow breathable membrane sheet, and a composite sheet after combining the three various forms together.

[0060] The core sleeve 12 is provided with connected dense holes, and the lower end surface of the core sleeve 12 is formed into a concave-convex rough surface by die pressing.

[0061] Embodiment 2, as Figure 3 - Figure 4 shown, different from Embodiment 1, a metal heat conduction column 16 is embedded coaxially between the core sleeve 12 and the sponge seat 11. The flame adjustment component 2 is press-fitted and inserted on one end protruding from the sponge seat 11, and one end of the heat conduction column 16 away from the sponge seat 11 is melt-embedded inside the sponge seat 11 and the core sleeve 12.

[0062] In a specific embodiment, the heat-conducting column 16 is a copper or aluminum columnar material. During production, it is sifted into the hole in the center of the male core of the mold using a vibrating sieve. With the hole facing upwards to prevent it from falling, the mold cavity of the drainage component 1 is then closed. Plastic powder is injected from the small end of the mold cavity, and after hot pressing and cooling, the heat-conducting column 16 is fixed. This heat-conducting column 16 can improve the problem of slow flameout after the lighter has a large flame.

[0063] Embodiment 3, as Figure 5 - Figure 6 shown, different from Embodiment 1, a gear-shaped column is provided at the connection between the core sleeve 12 and the drainage core 13. The top end of the gear column 17 is in contact with the bottom end of the core sleeve 12. The outer ring of the gear-shaped column is press-fitted into the inner ring of the air outlet hole at the lower end of the air outlet valve installation cavity of the lighter, enabling the combined flow guide and the inner ring of the air outlet valve to be integrated as one.

[0064] In a specific embodiment, the design of the outer ring of the gear-shaped column can be applied to all examples, and it does not affect the sealing of the upper and lower surfaces in the form of a sealing ring on the lower end surface of the core sleeve 12. During installation, the installation process of the flow guide can be advanced to after the injection molding of the machine shell and before the welding of the machine shell, which can greatly improve the installation efficiency. In combination with the thickened drainage core 13, fully automated installation can also be achieved.

[0065] Embodiment 4, as Figure 7 - Figure 8 shown, different from Embodiment 1, the bottom surface of the flame adjustment component 2 and the top surface of the sponge seat 11 are adhesively bonded by hot melting to achieve the purpose of reducing the processing and installation cost of the non-woven fabric flame adjustment component 2;

[0066] In a specific embodiment, this structure can also change the flame adjustment component 2 composed of a single non-woven fabric or a composite of non-woven fabric and sponge to a flame adjustment component 2 composed of a composite of non-woven fabric and a constant flow membrane. At the same time, the middle of the sponge seat 11 is hot-pressed into a microporous structure with a center part communicating with the drainage core 13, enabling the functions of an unlimited large flame, adjustable large and small flames, and a constant small flame.

[0067] Embodiment 5, as Figure 9 - Figure 10As shown, different from the first embodiment, a partition ring 18 higher than the end face is provided on the upper end face of the sponge seat 11. A flame adjustment component 2 is arranged on the partition ring 18. The outer ring of the flame adjustment component 2 and the outer ring of the top of the sponge seat 11 are ultrasonically heat-sealed. A sealing ring 19 is arranged on the lower end face of the core sleeve 12 to prevent gas from flowing out of the air outlet valve without passing through the constant flow membrane. When the air outlet valve is tightened through the flame adjustment ring so that the lower end face of the air outlet valve presses against the partition ring 18, and at the same time presses the pores of the constant flow breathable membrane flame adjustment component 2 in the middle, the communication between the inner and outer cavities of the lower end face is closed. At this time, the gas passes upward from the inner cavity through the lower non-woven fabric of the flame adjustment component 2, then through the middle breathable membrane, and then through the upper non-woven fabric, that is, the gas is only exported from the inner cavity. At this time, the flame height is 2 cm to 3 cm. When the air outlet valve is loosened through the flame adjustment ring so that the lower end face of the air outlet valve loosens the constant flow breathable membrane flame adjustment component 2 on the partition ring 18, at this time, the gas can flow radially from the partition ring 18 to the outer cavity, then axially flow through the constant flow breathable membrane with the full area, and then be exported through the upper non-woven fabric. At this time, the flame height is 3 cm to 4 cm, and the gap between the upper and lower non-woven fabrics of the partition ring 18 can be adjusted by twisting the flame adjustment ring so that the flame can be adjusted between 2 cm and 4 cm.

[0068] In a specific embodiment, the single constant flow design of this example can make the outer ring of the flame adjustment component 2 and the outer ring of the top of the sponge seat 11 not be ultrasonically heat-sealed. After inflation, the air outlet valve is tightened so that the lower end face of the air outlet valve presses against the partition ring 18 to seal the connection between the inside and outside of the constant flow breathable membrane flame adjustment component 2. At the same time, the lighter is not equipped with a fire adjustment ring to achieve the purpose of constant air outlet of the air outlet valve during inflation. That is, even if the constant flow breathable membrane flame adjustment component 2 is not well sealed around during ultrasonic heat-sealing in the lighter produced by this example product, it is still a lighter with an adjustable flame size that can be sold, with a small flame being constant and a large flame being adjustable to be larger.

[0069] Embodiment Six, as Figure 11 - Figure 12 shown, different from the first embodiment, an installation round groove 3 is provided at the central internal communication part of the sponge seat 11 and the core sleeve 12. A constant flow membrane 4 is arranged at the inner bottom end of the installation round groove. A sealing and fixing body 5 is arranged on the constant flow membrane. The upper end face of the sealing and fixing body 5 is higher than the top plane of the sponge seat 11. The sealing and fixing body 5 is in interference fit inside the installation round groove, used to clamp the constant flow membrane before inflation, and achieve sealing after inflation through the pressing of the upper end face and the lower end face of the air outlet valve to prevent gas from flowing out of the air outlet valve without passing through the constant flow membrane. At the same time, the outer ring of the constant flow membrane is fixed and sealed by the lower end face of the sealing and fixing body to prevent gas from flowing out of the air outlet valve without passing through the constant flow membrane. Cooperating with the integrated drainage part, this solution can achieve fewer parts and easier installation than other similar structures;

[0070] In a specific embodiment, when the flame adjustment component 2 has a constant-flow breathable membrane composite therein, the length of the drainage core 13 can be made very short, with little impact on the flame and no bending, making it more convenient for automated installation.

[0071] A method for preparing an integrated lighter flow guide member. Based on the lighter flow guide member, the method for preparing the integrated lighter flow guide member includes the following steps:

[0072] S101. Place the plastic powder into the mold cavity of the drainage component 1;

[0073] S102. Heat the mold to reach the melting temperature of the plastic powder;

[0074] S103. At the top of the core sleeve 12, use a pressure column to pressurize and heat the plastic powder at the positions of the core sleeve 12 and the sponge seat 11 in the mold cavity, so that the plastic powder at the sponge seat 11 part is sintered into a tight entity without connection holes, and the plastic powder at the core sleeve 12 part and the drainage core 13 part forms a plurality of interconnected capillary plastic sintered bodies;

[0075] S104. Keep the pressure and cool to demold into a plastic part with different densities in multiple parts;

[0076] S105. Clamp the sponge with two pieces of non-woven fabric and apply pressure for lamination to form the flame adjustment component 2;

[0077] It should be noted that during production, the plastic part and the flame adjustment component 2 are laminated by ultrasonic welding. During lamination, the flame adjustment component 2 can be cut from the large sheet by the instant high temperature at the welding head. The plastic material is preferably HDPE, PP, PET, etc. To meet the model requirements, plastic additives can be added to the plastic powder, such as adding alumina powder to increase thermal conductivity to meet the requirements of export machines, and plastic hardeners and tougheners can also be added. At the same time, the segmented powder injection method can be used to only inject the plastic powder added with certain additives at the positions of the core sleeve 12 and the sponge seat 11, and different materials that can be sintered with each other can be separately injected into the core sleeve 12, sponge seat 11 part and the drainage core 13 part. The heat conduction column 16 is a copper or aluminum columnar material. During production, it is sieved into the hole in the center of the male mold by a vibrating screen, with the hole facing up to prevent it from falling, and then the mold cavity of the drainage component 1 is closed. The plastic powder is injected from the small end of the mold cavity, and after hot pressing and cooling, the heat conduction column 16 is fixed. This heat conduction column 16 can improve the problem of slow flameout after the lighter burns at high temperature.

[0078] A method for preparing an integrated lighter flow guide member. Based on the integrated lighter flow guide member, the method for preparing the integrated lighter flow guide member includes the following steps:

[0079] S201. Melt-spray and draw the easily drawable plastic to form filaments;

[0080] S202. Wind the fine wire onto the take-up machine wheel;

[0081] S203. Heat the fine wire through the bell mouth of the sintering rod-making machine to form a plastic rod or tube with a compact outer wall and pores and a loose interior;

[0082] S204. At the same time, add plastic powder at the bell mouth of the sintering rod-making machine to synchronously bring the plastic powder into mixed sintering;

[0083] S205. Use the rod-making machine to synchronously cut the plastic rod or tube to a predetermined length;

[0084] S206. Use a vibrating sieve to sieve the plastic rods cut in step S205 into the hot pressing die;

[0085] S207. Use the male core column to pressurize the plastic rod heated at one end, so that the softened core sleeve 12 part and the sponge seat 11 part are cooled to form a compact and pore-free state, that is, the lighter drainage component 1 is obtained;

[0086] It should be noted that during production, a cylindrical mold for drawing the tube is arranged at the center of the bell mouth of the sintering rod-making machine. Melting the plastic fine wire into a tube can save a certain amount of materials when producing the thickened drainage core 13, and can also use the viscosity of the liquid to adsorb more liquefied gas liquid in the tube for vaporization during ignition. The disadvantage is that many take-up wheels are required to simultaneously transport smaller wire bundles inward along the inner circumference of the bell mouth.

[0087] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. Integrated flow guide for lighter, characterized in that, Including: The drainage component (1) and the flame adjustment component (2), and the flame adjustment component (2) is combined and located at the top of the diversion component to form a combined body; The drainage component (1) includes a sponge seat (11), a core sleeve (12) and a drainage core (13). The bottom end of the sponge seat (11) is integrally and fixedly connected to the top end of the core sleeve (12). The top end of the drainage core (13) is integrally and fixedly connected to the bottom end of the core sleeve (12). The inside of the sponge seat (11) is solid. A plurality of dense holes are densely formed inside the core sleeve (12) and inside the drainage core (13). However, the number of dense holes inside the core sleeve (12) is less than that inside the drainage core (13). And the cross-sectional area of one end of the drainage core (13) adjacent to the core sleeve (12) is larger than the cross-sectional area of the end of the drainage core (13) away from the core sleeve (12), showing a reduced-diameter change.

2. The integrated flow guide member of the lighter according to claim 1, characterized in that, The concave-convex rough surface formed by molding on the lower end surface of the core sleeve (12).

3. The integrated flow guide member of the lighter according to claim 1, characterized in that A heat-conducting column (16) is embedded coaxially between the core sleeve (12) and the sponge seat (11). The flame adjustment component (2) is press-fitted and inserted on one end protruding from the sponge seat (11). One end of the heat-conducting column (16) away from the sponge seat (11) is melt-embedded inside the sponge seat (11) and the core sleeve (12).

4. The integrated flow guide member for a lighter according to claim 1, characterized in that, A heat-conducting column (16) is embedded coaxially between the core sleeve (12) and the sponge seat (11). And one end of the heat-conducting column (16) away from the sponge seat (11) is press-fitted and inserted with the flame adjustment component (2). A gear column (17) is fixedly sleeved at the connection between the core sleeve (12) and the drainage core (13). The top end of the gear column (17) is in contact with the bottom end of the core sleeve (12).

5. The integrated flow guide of the lighter according to claim 1, characterized in that, The drainage core (13) is a rod-shaped or tubular plastic body formed by fusing plastic filaments, with a tight and porous surface and a loose interior.

6. The integrated flow guide member of the lighter according to claim 1, characterized in that The drainage core (13) is a rod-shaped or tubular plastic body formed by fusing plastic filaments mixed with plastic powder, with a tight and porous surface and a loose interior.

7. The integrated flow guide member of the lighter according to claim 1, characterized in that A partition ring (18) higher than the end surface is provided on the upper end surface of the sponge seat (11). The flame adjustment component (2) is arranged on the partition ring (18). The outer ring of the flame adjustment component (2) is adhesively bonded to the top outer ring of the sponge seat (11) by hot melting. A sealing ring (19) is sleeved outside the core sleeve (12).

8. The integrated flow guide of the lighter according to claim 1, characterized in that For the flame adjustment component (2), the bottom surface of the flame adjustment component (2) is adhesively bonded to the top surface of the sponge seat (11) by hot melting. An installation round groove (3) is opened at the central internal communication part of the sponge seat (11) and the core sleeve (12). A constant-flow film (4) is provided at the bottom end inside the installation round groove. A sealing and fixing body (5) arranged in a ring shape is provided on the constant-flow film. The upper end surface of the sealing and fixing body is higher than the top plane of the sponge seat (11). And the sealing and fixing body (5) is in interference fit inside the installation round groove.

9. Preparation method of integrated flow guide part of lighter, based on the integrated flow guide part of lighter according to any one of claims 1-8, characterized in that, The preparation method of the integrated lighter diversion part includes the following steps: S101. Place the plastic powder premixed with alumina powder into the mold cavity of the drainage component (1); S102. Heat the mold to the melting temperature of the plastic powder; S103. At the top of the core sleeve (12), use a pressure column to pressurize and heat the plastic powder at the position of the core sleeve (12) and the sponge seat (11) in the mold cavity, so that the plastic powder at the sponge seat (11) part is sintered into a tight entity without connection holes, and the plastic powder at the core sleeve (12) part and the drainage core (13) part forms a plurality of interconnected multi-porous plastic sintered bodies; S104. Keep the pressure and cool to demold and form a plastic part with different densities in multiple parts; S105. Ultrasonically heat and fuse the plastic part obtained in step S104 with the flame adjustment component (2) to form the integrated flow guide part of the lighter.

10. A method for preparing an integrated flow guide member of a lighter, based on the integrated flow guide member of a lighter according to any one of claims 1-8, characterized in that, The preparation method of the integrated flow guide part of the lighter includes the following steps: S201. Melt and spray draw an easily drawable plastic to form fine filaments; S202. Wind the fine filaments onto the take-up reel of the take-up machine; S203. Pass the fine filaments through the bell mouth of the fiber sintering rod-making machine to heat and tighten them into a plastic rod or tube with a tight outer wall and holes and a loose interior; S204. At the same time, add plastic powder to the bell mouth of the sintering rod-making machine to synchronously bring the plastic powder into mixed sintering; S205. Use the rod-making machine to cut the plastic rod or tube to a predetermined length synchronously; S206. Use a vibrating screen to screen the plastic rods cut in step S204 into the hot pressing mold; S207. In the hot pressing with heating, use the male core column to pressurize the heated plastic rod at one end, so that the softened core sleeve (12) part and the sponge seat (11) part are cooled to form a tight and hole-free state, that is, the lighter drainage component (1) is obtained.

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