Improved metal curling iron
By using the cutting and stamping process to form arc-shaped air guide wings and extension ribs on the metal cylinder of the curly hair stylist, the problems of complexity and high cost of traditional processes are solved, and a simpler processing process and higher pass rate are achieved. Speed up hair heating.
Patent Information
- Application Number
- CN202323646833.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The processing technology of traditional curly hair stylists is complex, has high cost and is prone to burrs, making it difficult to ensure product quality and pass rate.
The cutting and stamping process is used to form arc-shaped air guide wings on the metal cylinder, and the processing gap is filled with extended ribs to form small and narrow gap air outlets, replacing the traditional CNC punching process, simplifying the molding process and improving the product yield.
It reduces processing difficulty and cost, improves product qualification rate, and accelerates the hair heating and shaping speed through curved air guide surfaces, improving user experience.
Smart Images
Figure CN222149280U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hair curling devices, in particular to an improved metal hair curling rod. Background Art
[0002] A curling iron generally includes a hand-held handle and a shaping nozzle mounted on the hand-held handle, the shaping nozzle is provided with a shaping outer cylinder, the shaping outer cylinder has an air outlet, the air outlet blows out hot air so that the hair sticks to the cylinder wall of the shaping outer cylinder, thereby achieving curling. The structure of the traditional shaping outer cylinder is that there are multiple small and narrow slit air outlets arrayed along the length direction and along the circumferential direction of the shaping outer cylinder, such as the Chinese utility model patent with application number 2023224952311 submitted by the right holder of the utility model on September 14, 2023, such as Figure 1-3 In the embodiment, the metal outer cylinder 2 is integrally formed, and the outer cylinder 2 has a plurality of arc-shaped plates 11. The first vertical section 100 of the rear arc-shaped plate 11 is offset from the second vertical section 217 of the front arc-shaped plate 11 and does not overlap, that is, the first vertical section 100 and the second vertical section 217 are spaced apart in both the X direction and the Y direction to form a small and narrow gap air outlet. The outer cylinder structure of the technical solution needs to be punched multiple times by CNC process, and the process flow is complicated. If the cylinder body is punched directly (see Fig.17 As shown, the old punching lower die 82 is fixed from the inside of the shaped outer cylinder 1, and the old punching upper die 81 applies pressure from the outside to the inside, and the cutting and bending are completed simultaneously.) The processing is difficult, the cost is high, and burrs are prone to appear. Therefore, under the premise of ensuring product quality, in order to reduce the difficulty and cost of product processing and improve the product qualification rate, it is urgent to improve it. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model aims to provide an improved metal curling iron.
[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an improved metal curling iron, comprising a shaping outer cylinder and an air-guiding inner cylinder built into the shaping outer cylinder, the shaping outer cylinder is an integrated shaping outer cylinder, the surface of the shaping outer cylinder is prefabricated or cut to form a plurality of cutting openings, the surface of the shaping outer cylinder is stamped and bent inward along the cutting openings to form a plurality of air-guiding wings with arc-shaped air-guiding surfaces, the surface of the shaping outer cylinder is located at the cutting opening to form a first edge, the air-guiding wing has a second edge, the first edge and the second edge have a processing gap, the air-guiding inner cylinder has a plurality of extension ribs, each of the extension ribs at least partially extends to the processing gap and forms an outwardly expanded extension slope with the second edge of the air-guiding wing, the first edge is located above the extension slope and is on the same longitudinal plane as the extension slope without overlapping to form a small and narrow gap air outlet.
[0005] In a further technical solution, the first edge has a first vertical section, and each of the extended ribs has a second vertical section, which is offset up and down from the first vertical section and is on the same plane or on two parallel and spaced-apart different planes without overlapping.
[0006] In a further technical solution, the width d1 of the machining gap on the radial cross section is 0.4-2.0 mm.
[0007] In a further technical solution, the cutting opening is extended along the length direction of the shaping outer cylinder.
[0008] In a further technical solution, the diameter of the shaping outer cylinder is set to 28 to 50 mm.
[0009] In a further technical solution, one end of the air guide inner cylinder is configured as an air inlet opening connected to the air inlet channel, and the other end is configured as an air blocking bracket. When the air guide inner cylinder is inserted into the inner cavity of the shaping outer cylinder, the air blocking bracket blocks the end of the shaping outer cylinder away from the air inlet opening, and a sealing ring is provided at the connection position between the air blocking bracket and the shaping outer cylinder.
[0010] In a further technical solution, an assembly groove is formed inwardly on the outer wall of the air guide inner cylinder, and when the air guide inner cylinder is installed into the inner cavity of the shaping outer cylinder, the air guide wings are accommodated in the assembly groove.
[0011] In a further technical solution, the number of the wind guide wings is 6.
[0012] In a further technical solution, the wall thickness of the molded outer cylinder is 0.5 to 2.5 mm.
[0013] In a further technical solution, the material of the shaped outer cylinder is aluminum alloy.
[0014] After adopting the above structure, the utility model has the following advantages compared with the prior art: the utility model cuts a long section of the metal cylinder along the length direction of the metal cylinder, and then directly punches downward along the position of the cutting opening, that is, the metal cylinder is partially separated along the cutting opening instead of being completely separated by cutting and punching, and the partially separated material (wind guide wing) is not located on the plane before separation. Although the stereotyped outer cylinder structure forms a large processing gap, the processing is simple and the precision requirement is not high. Then, the processing gap is filled by extending the extended rib to fill the gap along the wind gap. A gap is formed to form an extension surface of the arc-shaped air-guiding surface, thereby ensuring the formation of a gap air outlet, and allowing the wind to flow continuously along the air-guiding wing as a wall-attached flow, that is, the air outlet is formed by the cooperation of the air-guiding inner cylinder and the shaped outer cylinder, so that the size of the outlet air meets a specific critical point, replacing the traditional air outlet that directly forms a critical point of size by stamping the shaped outer cylinder. Compared with the traditional method of relying on CNC technology to directly punch holes to make the wall of the outer cylinder continuous in cross section, such a structure does not require the use of CNC processing technology, and the molding process is simpler, faster, lower in cost, and the qualified rate is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0016] Figure 1 The invention is a schematic structural diagram of the original metal curling iron mentioned in the background technology.
[0017] Figure 2 yes Figure 1 Schematic diagram of the cross-section projection of the molded outer cylinder.
[0018] Figure 3 yes Figure 2 Enlarged view of point A.
[0019] Figure 4 It is a structural schematic diagram of the shaped outer cylinder of the utility model;
[0020] Figure 5 Figure 4 A schematic diagram of the structure enlarged at B in the middle;
[0021] Figure 6 It is a cross-sectional view of the molded outer cylinder of the utility model on the radial cross section;
[0022] Figure 7 yes Figure 6 A schematic diagram of the structure enlarged at C in the middle;
[0023] Figure 8 It is a cross-sectional view of the shaping outer cylinder and the air guiding inner cylinder of the utility model on the radial cross section;
[0024] Fig. 9 yes Figure 8 A schematic diagram of the structure at D in the middle is enlarged;
[0025] Fig.10 It is a partial structural schematic diagram of the molded outer cylinder of the utility model;
[0026] Fig.11 It is a partial structural schematic diagram of the utility model;
[0027] Fig.12 It is a schematic diagram of the structure when the air guide bracket is assembled into the inner cavity of the shaped outer cylinder;
[0028] Fig.13 It is a schematic diagram of the structure decomposition of the utility model;
[0029] Fig.14 This is a schematic diagram of the process of punching holes in the first step of processing the shaped outer cylinder of the utility model;
[0030] Fig.15 It is a schematic diagram of the second step of bending in the processing of the molded outer cylinder of the utility model;
[0031] Fig.16 It is a schematic diagram of the formation of a processing gap during the processing of the molded outer cylinder of the utility model;
[0032] Fig.17 yes Figures 1 to 3 Schematic diagram of the punching processing method used.
[0033] Labeling instructions: 1. Molded outer cylinder; 10. Processing gap; 11. Wind guide wing; 110. Arc-shaped wind guide surface; 111. First edge; 112. Second edge; 3. Top cover; 2. Wind guide inner cylinder; 21. Wind guide hole; 22. Air inlet opening; 23. Wind blocking bracket; 24. Sealing ring; 25. Assembly groove; 26. Arc-shaped wind guide rib; 27. Extension rib; 270. Second vertical section; 271. Extended inclined surface; 100. First vertical section; 4. Slit air outlet; 5. Punching die; 51. Punching upper die; 52. Punching lower die; 6. Bending die; 61. Bending upper die; 62. Bending lower die; 7. Punching cut strip; 8. Old punching die; 81. Old punching upper die; 82. Old punching lower die. DETAILED DESCRIPTION
[0034] The following are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention.
[0035] like Figures 4 to 16 As shown, the utility model provides an improved metal curling iron, comprising a shaping outer cylinder 1 and an air guide inner cylinder 2 built into the shaping outer cylinder 1, wherein the shaping outer cylinder 1 is an integrated metal cylinder, the shaping outer cylinder 1 is made of aluminum alloy, and the shaping outer cylinder 1 has a plurality of cutting openings prefabricated or cut on its surface, that is, Fig.14 As shown, the shaped outer cylinder 1 passes through the punching die 5, specifically the punching lower die 52 is blocked from the inside of the shaped outer cylinder 1, and the punching upper die 51 punches from the outside to the inside, and the shaped outer cylinder 1 is punched into a plurality of punching strips 7. Fig.15 As shown, the shaping outer cylinder 1 is fixed inside the shaping outer cylinder 1 through a bending mold 6, specifically a bending lower mold 62, and a bending upper mold 61 applies pressure from the outside to the inside, so that the surface of the shaping outer cylinder 1 is stamped and bent inwardly along the cutting direction to form a plurality of wind guide wings 11 with arc-shaped wind guide surfaces 110. The surface of the shaping outer cylinder 1 is located at the cutting position to form a first edge 111, and the wind guide wing 11 has a second edge 112. The first edge 111 and the second edge 112 have a processing gap 10. The wind guide inner cylinder 2 has a plurality of extension ribs 27, and each of the extension ribs 27 at least partially extends to the processing gap 10 and forms an outwardly expanded extension slope 271 with the second edge 112 of the wind guide wing 11. The first edge 111 is located above the extension slope 271 and is on the same longitudinal plane as the extension slope 271 without overlapping to form a small and narrow gap air outlet 4.
[0036] The utility model forms a plurality of air guide wings 11 on the shaped outer cylinder 1 by adopting a cutting and stamping process, which is simple to process, but there is a large processing gap 10, and the extended rib 27 fills the processing gap 10, and the extended rib 27 constitutes an extended inclined surface 271 of the arc-shaped air guide surface 110, so that the first edge 111 formed at the cutting opening of the shaped outer cylinder 1 and the extended inclined surface 271 form a small and narrow gap air outlet 4, ensuring that the wind flow can continuously flow along the air guide wings 11 to adhere to the wall, that is, the air outlet is formed by the cooperation of the air guide inner cylinder 2 and the shaped outer cylinder 1, so that the size of the outlet air meets a specific critical point, replacing the traditional air outlet with a critical size point formed directly by stamping the shaped outer cylinder 1. Compared with the traditional method of directly punching holes relying on CNC technology to make the wall of the outer cylinder continuous in cross section, such a structure does not need to adopt CNC processing technology, and the molding process is simpler, faster, and has lower cost, while the qualified rate is greatly improved.
[0037] In a further technical solution, the first edge 111 has a first vertical section 100, and each of the extended ribs 27 has a second vertical section 270. The first vertical section 100 and the second vertical section 270 are offset up and down and are on the same plane or on two parallel and spaced-apart different planes without overlapping.
[0038] In a further technical solution, the surface of the shaping outer cylinder 1 is prefabricated or cut to form a plurality of cutting cuts, and the surface of the shaping outer cylinder 1 is punched and bent inwardly along the cutting cuts to form a plurality of the wind guide wings 11. During processing, first, a narrow and long cutting cut is cut into the shaping outer cylinder 1 along the length direction of the shaping outer cylinder 1, and then the cutting cut is directly punched downwardly along the position of the cutting cut, so that the tube wall of the shaping outer cylinder 1 is folded inwardly to form the wind guide wings 11, and the inwardly folded wind guide wings 11 punched downwardly form an arc-shaped wind guide surface 110. The shaping outer cylinder 1 adopts a cutting and punching method to form the wind guide wing 11 structure. Compared with the original shaping outer cylinder by CNC punching and punching, the shaping outer cylinder 1 of the utility model is simple to process, avoids the problem of burrs, and has a higher product yield.
[0039] In addition, the use of a metal cylinder as the outer shaping cylinder 1 has the advantage of faster heat conduction, which can heat and shape the hair faster and optimize the user experience.
[0040] In this embodiment, if Figure 7 As shown, in a further technical solution, the width d1 of the processing gap 10 on the radial section is 0.4-2.0 mm.
[0041] In this embodiment, Figure 4 The middle arrow indicates a processing gap 10 formed by shaping the outer cylinder 1 .
[0042] In this embodiment, the cutting opening is extended along the length direction of the shaping outer cylinder 1 .
[0043] In this embodiment, the shaping outer cylinder 1 has a plurality of air guide wings 11, and the plurality of air guide wings 11 are spaced apart along the circumferential direction of the shaping outer cylinder 1. More specifically, in this embodiment, Figures 4 to 13 As shown, the number of the air guide wings 11 of the present solution is preferably 6, and the 6 air guide wings 11 are evenly distributed.
[0044] In this embodiment, the diameter d2 of the shaping outer cylinder 1 is set to 28 to 50 mm. The wall thickness of the shaping outer cylinder is 0.5 to 2.5 mm.
[0045] More specifically, a plurality of the arc-shaped air guide ribs 26 are arranged between every two adjacent extended ribs 27, and the plurality of arc-shaped air guide ribs 26 are spaced apart along the length direction of the air guide inner cylinder 2, and an air guide hole 21 is formed between two adjacent arc-shaped air guide ribs 26, so that the airflow flowing from the air guide hole 21 to the small and narrow gap air outlet 4 detours along the wall surface of the molded outer cylinder 1. When the arc-shaped air guide rib 26 is not perpendicular to the processing gap 10, that is, when the arc-shaped air guide rib 26 forms an oblique angle with the processing gap 10, the airflow flowing from the air guide hole 21 to the processing gap 10 spirals around the wall surface of the molded outer cylinder 1.
[0046] The utility model forms uniform small and narrow gap air outlets 4 by using the air guide inner cylinder 2 in conjunction with the shaping outer cylinder 1. Wind is blown out from the small and narrow gap air outlets 4 to form a Coanda effect, so that the wind flow from the air guide holes 21 to the small and narrow gap air outlets 4 detours along the wall surface of the shaping outer cylinder 1.
[0047] In this embodiment, one end of the air guide inner cylinder 2 is configured as an air inlet opening 22, and the other end is configured as an air blocking bracket 23. When the air guide inner cylinder 2 is inserted into the inner cavity of the shaping outer cylinder 1, the air blocking bracket 23 blocks the end of the shaping outer cylinder 1 away from the air inlet opening 22, and a sealing ring 24 is provided at the connection position between the air blocking bracket 23 and the shaping outer cylinder 1.
[0048] The utility model prevents leakage of the gap at the top of the airflow by adding a sealing ring 24, and avoids low wind pressure at the small and narrow gap air outlet 4, so as to prevent the formation of the Coanda effect.
[0049] Furthermore, the utility model further comprises a top cover 3, which is mounted on the end of the shaped outer cylinder 1 away from the air inlet opening 22, and the top cover 3 plays the role of hand-held gripping and closed blocking, further preventing the airflow from leaking from the top. More specifically, the top cover 3 is connected to the air blocking bracket 23.
[0050] In a more specific embodiment, the outer wall surface of the air guide inner cylinder 2 is concavely formed with an assembly groove 25 , and when the air guide inner cylinder 2 is installed into the inner cavity of the shaping outer cylinder 1 , the air guide wings 11 are accommodated in the assembly groove 25 .
[0051] By adding the assembly groove 25, the air guide inner cylinder 2 and the shaping outer cylinder 1 are assembled more tightly without leaving any gaps, thereby ensuring that the wind can only flow out from the small and narrow gap air outlet 4, so that there is sufficient wind pressure at the small and narrow gap air outlet 4. Under the guidance of multiple arc-shaped air guide surfaces 110, the wind is blown out along the outer wall of the shaping outer cylinder 1 when it is out, and the hair is guided by the wind and adsorbed and wrapped around the outer wall of the shaping outer cylinder 1 when curling.
[0052] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.
Claims
1. An improved metal curling iron, comprising a shaping outer cylinder (1) and an air guide inner cylinder (2) built into the shaping outer cylinder (1), characterized in that: The shaping outer cylinder (1) is an integral metal cylinder. A plurality of cutting cuts are prefabricated or cut on the surface of the shaping outer cylinder (1). The surface of the shaping outer cylinder (1) is pressed and bent inwardly along the cutting cuts to form a plurality of air guide wings (11) having arc-shaped air guide surfaces (110). The surface of the shaping outer cylinder (1) is located at the cutting cut to form a first edge (111). The air guide wings (11) have a second edge (112). The first edge (111) and the second edge (112) have a processing gap (10). The air guide inner cylinder (2) has a plurality of extension ribs (27). Each extension rib (27) at least partially extends to the processing gap (10) and forms an outwardly expanded extension slope (271) with the second edge (112) of the air guide wing (11). The first edge (111) is located above the extension slope (271) and is on the same longitudinal plane as the extension slope (271) without overlapping to form a small and narrow gap air outlet (4).
2. An improved metal curling iron according to claim 1, characterized in that: The first edge (111) has a first vertical section (100), and each of the extended ribs (27) has a second vertical section (270). The first vertical section (100) and the second vertical section (270) are offset up and down and are on the same plane or on two parallel and spaced-apart different planes and do not overlap.
3. The improved metal curling iron according to claim 1, characterized in that: The width d1 of the machining gap (10) on the radial cross section is 0.4-2.0 mm.
4. The improved metal curling iron according to claim 1, characterized in that: The cutting opening is extended along the length direction of the shaping outer cylinder (1).
5. The improved metal curling iron according to claim 1, characterized in that: The diameter of the shaping outer cylinder (1) is set to be 28 to 50 mm.
6. The improved metal curling iron according to claim 1, characterized in that: One end of the air guide inner cylinder (2) is configured as an air inlet opening (22), and the other end is configured as an air blocking bracket (23). When the air guide inner cylinder (2) is inserted into the inner cavity of the shaping outer cylinder (1), the air blocking bracket (23) blocks the end of the shaping outer cylinder (1) away from the air inlet opening (22), and a sealing ring (24) is provided at the connection position between the air blocking bracket (23) and the shaping outer cylinder (1).
7. The improved metal curling iron according to claim 1, characterized in that: An assembly groove (25) is formed in the outer wall of the air guide inner cylinder (2). When the air guide inner cylinder (2) is installed into the inner cavity of the shaping outer cylinder (1), the air guide wing (11) is accommodated in the assembly groove (25).
8. The improved metal curling iron according to claim 1, characterized in that: The number of the wind guide wings (11) is 6.
9. The improved metal curling iron according to claim 1, characterized in that: The wall thickness of the shaped outer cylinder (1) is 0.5 to 2.5 mm.
10. The improved metal curling iron according to claim 1, characterized in that: The material of the shaped outer cylinder (1) is aluminum alloy.