Hair dryer air duct mold

Abstract

The utility model belongs to the technical field of hair dryer production, and particularly relates to a hair dryer air duct mold which comprises a mold base. A lower die block is mounted at the top of the die holder; a plurality of guide columns are fixedly connected to the top of the die holder; the middle of the guide column is sleeved with a guide column sleeve. A middle module is mounted above the lower module; an upper module is mounted above the middle module; the guide column penetrates through the lower module, the middle module and the upper module, and the guide column sleeve is in sliding connection with the lower module, and the middle module is in sliding connection with the upper module; a plurality of hydraulic rods are fixedly connected to the top of the die holder; the output end of the hydraulic rod is fixedly connected with the upper module; a bottom die cavity is formed in the top of the lower die block; a plurality of air duct mold shells are installed on the top of the middle mold block, the upper mold block is jacked up by controlling the hydraulic rod, then the middle mold block and the air duct mold shells are taken down from the lower mold block, a plurality of formed air ducts are obtained, in this way, the multiple air ducts can be formed at a time, the machining speed is increased, and the cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of hair dryer manufacturing technology, specifically a hair dryer air duct mold. Background Technology

[0002] A hair dryer, also known as a hair dryer, is a tool that dries hair quickly and has functions such as protecting hair and styling.

[0003] A hair dryer typically consists of four main parts: a power system, a heating system, a control system, and a housing. The power system is the core driving module of the hair dryer, consisting of a motor and a fan. The heating system is controlled by a heating element and a temperature sensor. The control system is integrated and controlled by a circuit board. The housing consists of a shell, an air duct, nozzle accessories, and a filter. In the hair dryer system, the air duct plays the role of concentrating and delivering airflow, and it is manufactured by injection molding.

[0004] When injection molding the air duct of a hair dryer, existing molds can usually only form one air duct at a time, and the production of air ducts is carried out individually, which increases production costs and time.

[0005] Therefore, this utility model provides a mold for the air duct of a hair dryer. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A hair dryer duct mold of this utility model includes a mold base; a lower module is installed on the top of the mold base; multiple guide pillars are fixedly connected to the top of the mold base; a guide pillar sleeve is sleeved in the middle of the guide pillar; a middle module is installed above the lower module; an upper module is installed above the middle module; the guide pillars pass through the lower module, the middle module and the upper module, and the guide pillar sleeves and the lower module, the middle module and the upper module are slidably connected; multiple hydraulic rods are fixedly connected to the top of the mold base; the output end of the hydraulic rods is fixedly connected to the upper module; a bottom mold cavity is opened on the top of the lower module; multiple duct mold shells are installed on the top of the middle module; the duct mold shells pass through the upper module and are slidably connected to the upper module. Through the above structure, multiple ducts can be formed at one time, which speeds up the processing speed and reduces costs.

[0008] Preferably, the bottom of the mold base is provided with a pair of ejector pin mounting slots; the pair of ejector pin mounting slots are symmetrically arranged on the mold base; a plurality of first ejector pin guide holes are provided inside the ejector pin mounting slots; a plurality of second ejector pin guide holes are provided at the bottom of the lower module; the first ejector pin guide holes and the second ejector pin guide holes are positioned correspondingly. The above structure reduces the possibility of damage to the air duct during the removal process and improves the safety of the air duct processing of the hair dryer.

[0009] Preferably, the middle module has multiple sets of water inlets on its sidewall; the water inlets are symmetrically arranged on the middle module; a first cooling groove is formed inside each water inlet; a water outlet is formed at the end of the first cooling groove; an annular groove is formed at the bottom of the air duct mold shell; multiple second cooling grooves are formed on the inner sidewall of the annular groove; the water outlet and the annular groove are positioned correspondingly. The above structure reduces air duct deformation and internal stress, shortens the molding cycle, and improves the production efficiency of the air duct.

[0010] Preferably, the lower module sidewall has a pair of vents; multiple vent holes are provided between the vents and the bottom mold cavity; the vents and vent holes are connected, and the above structure reduces defects such as scorching, bubbles, and material shortage caused by trapped air, improves the surface quality of the air duct, reduces the generation of weld lines, and improves production quality.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. The hair dryer air duct mold of this utility model can form multiple air ducts at one time by injection molding multiple air duct mold shells at one time, which speeds up the processing speed and reduces costs.

[0013] 2. The air duct mold for a hair dryer described in this utility model, by providing an exhaust port and exhaust hole on the lower module, can discharge residual air and volatile gases in the plastic melt inside the bottom mold cavity during the injection molding process, reducing defects such as scorching, bubbles, and material shortage caused by trapped air, improving the surface quality of the air duct, reducing the generation of weld lines, and improving production quality. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the mold base in this utility model;

[0017] Figure 3 This is an exploded view of this utility model;

[0018] Figure 4This is a schematic diagram of the hydraulic rod in this utility model;

[0019] Figure 5 This is a cross-sectional view of the present invention;

[0020] Figure 6 This is a structural schematic diagram of the upper module in this utility model;

[0021] Figure 7 This is a structural schematic diagram of the module in this utility model;

[0022] Figure 8 This is a structural schematic diagram of the lower module in this utility model;

[0023] Figure 9 This is a schematic diagram of the annular groove in this utility model;

[0024] In the diagram: 1. Mold base; 2. Lower module; 3. Middle module; 4. Upper module; 5. Guide pillar; 6. Guide pillar sleeve; 7. Hydraulic rod; 8. Bottom mold cavity; 9. Air duct mold shell; 10. Exhaust port; 11. Exhaust hole; 12. Ejector pin mounting groove; 13. First ejector pin guide hole; 14. Second ejector pin guide hole; 15. Water inlet; 16. First cooling tank; 17. Water outlet; 18. Annular groove; 19. Second cooling tank. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figures 1 to 9As shown in the embodiment of this utility model, a hair dryer duct mold includes a mold base 1; a lower module 2 is mounted on the top of the mold base 1; multiple guide posts 5 are fixedly connected to the top of the mold base 1; a guide post sleeve 6 is sleeved in the middle of the guide post 5; a middle module 3 is mounted above the lower module 2; an upper module 4 is mounted above the middle module 3; the guide posts 5 penetrate the lower module 2, the middle module 3, and the upper module 4, and the guide post sleeve 6 is slidably connected to the lower module 2, the middle module 3, and the upper module 4; multiple hydraulic rods 7 are fixedly connected to the top of the mold base 1; the output end of the hydraulic rods 7 is fixedly connected to the upper module 4; a bottom mold cavity 8 is opened on the top of the lower module 2; multiple duct mold shells 9 are mounted on the top of the middle module 3; and the duct mold shells 9 penetrate the upper module 4. 4. The upper module 4 is slidably connected to the lower module 4. During operation, the mold base 1, lower module 2, middle module 3 and upper module 4 are installed in sequence. Then, multiple air duct mold shells 9 are installed inside the middle module 3 and upper module 4. Molten injection is injected from the top of the air duct mold shell 9. After the melt enters the air duct mold shell 9, it forms a solidified layer through contact with the air duct mold shell 9, keeping the central melt at a high temperature and continuing to flow until it fills the interior of the air duct mold shell 9. After the melt cools and solidifies, the upper module 4 is lifted by controlling the hydraulic rod 7. Then, the middle module 3 and air duct mold shell 9 are removed from the lower module 2 to obtain multiple formed air ducts. This method can form multiple air ducts at one time, which speeds up the processing and reduces costs.

[0027] like Figures 2 to 5 As shown, a pair of ejector pin mounting slots 12 are provided at the bottom of the mold base 1; the pair of ejector pin mounting slots 12 are symmetrically arranged on the mold base 1; a plurality of first ejector pin guide holes 13 are provided inside the ejector pin mounting slots 12; a plurality of second ejector pin guide holes 14 are provided at the bottom of the lower module 2; the first ejector pin guide holes 13 and the second ejector pin guide holes 14 are positioned correspondingly. During operation, by installing the mold ejector plate inside the ejector pin mounting slots 12 and inserting the ejector pins on the mold ejector plate into the first ejector pin guide holes 13 and the second ejector pin guide holes 14, after the air duct is formed and cooled, the air duct is pushed out from the bottom by passing the ejector pins through the first ejector pin guide holes 13 and the second ejector pin guide holes 14. The ejector pins overcome the friction and vacuum suction force inside the air duct and the bottom mold cavity 8, which is beneficial for the removal of the formed air duct, reduces the possibility of damage to the air duct during the removal process, and improves the safety of the air duct processing of the dryer.

[0028] like Figures 6 to 9As shown, the middle module 3 has multiple sets of water inlets 15 on its side wall; the water inlets 15 are symmetrically arranged on the middle module 3; a first cooling groove 16 is provided inside the water inlet 15; a water outlet 17 is provided at the end of the first cooling groove 16; an annular groove 18 is provided at the bottom of the air duct mold shell 9; multiple second cooling grooves 19 are provided on the inner side wall of the annular groove 18; the water outlet 17 and the annular groove 18 are positioned correspondingly. During operation, cooling water is injected from one side of the water inlet 15, flows through the first cooling groove 16, and then flows from the water outlet 17 into the annular groove 18 at the bottom of the air duct mold shell 9. During the continuous injection of cooling water, the cooling water enters the multiple second cooling grooves 19 through the annular groove 18, thereby accelerating the cooling effect on the air duct forming inside the air duct mold shell 9. Afterwards, the cooling water flows out from the other side and achieves uniform cooling of the air duct through the multiple second cooling grooves 19, reducing air duct deformation and internal stress, shortening the forming cycle, and improving the production efficiency of the air duct.

[0029] like Figure 5 As shown, a pair of vents 10 are provided on the side wall of the lower module 2; multiple vent holes 11 are provided between the vents 10 and the bottom mold cavity 8; the vents 10 and vent holes 11 are connected. During operation, by providing vents 10 and vent holes 11 on the lower module 2, residual air and volatile gases in the bottom mold cavity 8 can be discharged during the injection molding process, reducing defects such as scorching, bubbles, and material shortage caused by trapped air, improving the surface quality of the air duct, reducing the generation of weld lines, and improving production quality.

[0030] Working principle: The mold base 1, lower module 2, middle module 3 and upper module 4 are installed in sequence. Then, multiple air duct mold shells 9 are installed inside the middle module 3 and upper module 4. Molten injection is injected from the top of the air duct mold shell 9. After entering the air duct mold shell 9, the melt forms a solidified layer through contact with the air duct mold shell 9, keeping the central melt at a high temperature and continuing to flow until it fills the interior of the air duct mold shell 9. After the melt cools and solidifies, the upper module 4 is lifted by controlling the hydraulic rod 7. Then, the middle module 3 and air duct mold shell 9 are removed from the lower module 2 to obtain multiple formed air ducts. This method can form multiple air ducts at once, which speeds up the processing and reduces costs.

[0031] By installing the mold ejector plate inside the ejector mounting slot 12 and inserting the ejector pins on the mold ejector plate into the first ejector guide hole 13 and the second ejector guide hole 14, after the air duct is formed and cooled, the air duct is ejected from the bottom by passing the ejector pins through the first ejector guide hole 13 and the second ejector guide hole 14. The ejector pins overcome the friction and vacuum suction force inside the air duct and the bottom mold cavity 8, which is beneficial for the removal of the formed air duct, reduces the possibility of damage to the air duct during the removal process, and improves the safety of the air duct processing of the dryer.

[0032] By injecting cooling water from the inlet 15 on one side, allowing the cooling water to flow through the first cooling tank 16 and then into the annular groove 18 at the bottom of the duct mold shell 9 from the outlet 17, the cooling water enters multiple second cooling tanks 19 through the annular groove 18 during the continuous injection of cooling water. This accelerates the cooling of the air duct forming inside the duct mold shell 9. Afterward, the cooling water flows out from the other side and passes through multiple second cooling tanks 19 to uniformly cool the air duct, reducing air duct deformation and internal stress, shortening the forming cycle, and improving the production efficiency of the air duct.

[0033] By providing vent 10 and vent 11 on the lower module 2, residual air and volatile gases in the plastic melt can be discharged from the bottom mold cavity 8 during the injection molding process, reducing defects such as scorching, bubbles, and material shortage caused by trapped air, improving the surface quality of the air duct, reducing the generation of weld lines, and improving production quality.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mold for a hair dryer air duct, comprising a mold base (1); characterized in that: The mold base (1) is equipped with a lower module (2) on top; multiple guide posts (5) are fixedly connected to the top of the mold base (1); a guide post sleeve (6) is fitted in the middle of the guide post (5); a middle module (3) is installed above the lower module (2); an upper module (4) is installed above the middle module (3); the guide post (5) passes through the lower module (2), the middle module (3) and the upper module (4), and the guide post sleeve (6) is slidably connected to the lower module (2), the middle module (3) and the upper module (4); multiple hydraulic rods (7) are fixedly connected to the top of the mold base (1); the output end of the hydraulic rod (7) is fixedly connected to the upper module (4); a bottom mold cavity (8) is opened on the top of the lower module (2); multiple air duct mold shells (9) are installed on the top of the middle module (3); the air duct mold shells (9) pass through the upper module (4) and are slidably connected to the upper module (4).

2. A hair dryer air channeling mold as defined in claim 1, wherein: The bottom of the mold base (1) is provided with a pair of ejector pin mounting slots (12); the pair of ejector pin mounting slots (12) are symmetrically arranged on the mold base (1); a plurality of first ejector pin guide holes (13) are provided inside the ejector pin mounting slots (12); a plurality of second ejector pin guide holes (14) are provided at the bottom of the lower module (2); the positions of the first ejector pin guide holes (13) and the second ejector pin guide holes (14) are correspondingly arranged.

3. A hair dryer air channeling mold as defined in claim 2, wherein: The middle module (3) has multiple sets of water inlets (15) on its side wall; the water inlets (15) are symmetrically arranged on the middle module (3); a first cooling groove (16) is provided inside the water inlet (15); a water outlet (17) is provided at the end of the first cooling groove (16); an annular groove (18) is provided at the bottom of the air duct mold shell (9); multiple second cooling grooves (19) are provided on the inner side wall of the annular groove (18); the water outlet (17) and the annular groove (18) are positioned correspondingly.

4. A hair dryer air channeling die according to claim 3, wherein: The lower module (2) has a pair of vents (10) on its side wall; a plurality of vent holes (11) are provided between the vents (10) and the bottom mold cavity (8); the vents (10) and the vent holes (11) are connected.

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