Die for manufacturing air duct of blower

Abstract

The utility model is suitable for the technical field of blower production, and provides a mould for manufacturing a blower air duct, which comprises a lower mould, a base, a lower mould, a top mould and a top mould, the two supporting plates are symmetrically mounted at the lower end of the base; the upper die is mounted at the upper end of the lower die; the cooling mechanism and the air exhaust mechanism are installed in the lower mold, air in a mold cavity is exhausted by arranging the air exhaust mechanism, hot melt adhesive materials are easy to fill and can not be affected by the air to fill the mold cavity, air holes and air holes cannot be formed in a plastic shell, the damage rate is reduced, and the production efficiency is improved. The motor drives the rotating shaft connected with the motor to rotate, the rotating shaft rotates to drive the fan blades to rotate, the first exhaust pipe connected with the outer cover sucks out gas in the film cavity through the exhaust hole, and the gas is exhausted through the second exhaust pipe, so that hot melt adhesive is easy to fill.

Description

Technical Field

[0001] The utility model belongs to the technical field of hair dryer production, and in particular relates to a mold for making a hair dryer barrel. Background Art

[0002] Hair dryers are mainly used for drying and shaping hair, but they can also be used for local drying, heating and treatment in laboratories, physiotherapy rooms, industrial production, art and other fields. Existing hair dryer barrels are generally molded by injection molding. The molding mold generally includes an upper mold and a lower mold, which can be separated or combined. When separated, the product is taken out, and when combined, the blank is injected into the mold cavity for molding.

[0003] After searching, the Chinese patent document application number 202021643086.7 discloses a mold for making a hair dryer barrel, which includes an upper mold and a lower mold that cooperate with each other, the upper mold includes a top plate and an upper mold body, a shaping cavity is provided on the upper mold body, and a vertical positioning column is provided at the four corners of the upper mold body; the lower mold includes a bottom plate and a lower mold body, a shaping convex portion is provided on the lower mold body, and vertical positioning holes are provided at the four corners of the lower mold body, and the vertical positioning column can be detachably inserted into the vertical positioning hole; the shaping convex portion has a mold core, an adjusting member is provided in the mold core, an opening connected to the mold core is provided on the shaping convex portion, and the adjusting member can be movably extended into the opening forward and backward; a driving cylinder is provided on the side wall of the lower mold body, and the driving cylinder is connected to the adjusting member. Therefore, by using the driving cylinder to control the forward and backward movement of the adjusting member, the space in the mold core is adjusted to adapt to the injection molding of different models of products, the operation is more flexible and convenient, and the application range is wider.

[0004] However, this device has certain defects. During the injection molding process, the hot melt adhesive will replace the gas in the cavity. If the gas is not discharged in time, it will be difficult to fill the hot melt adhesive, resulting in insufficient injection volume and failure to fill the cavity. The gas that is not discharged smoothly will form high pressure in the cavity, and at a certain degree of compression, it will enter the interior of the plastic shell, forming air holes, sparse structure, silver streaks and other quality defects. Utility Model Content

[0005] The utility model provides a mold for making a hair dryer barrel, aiming to solve the problem that the gas in the mold core makes it difficult to fill the hot melt adhesive material during the injection molding process.

[0006] The utility model is implemented in this way: a mold for making a hair dryer barrel, comprising a lower mold:

[0007] A base installed at the lower end of the lower mold; two support plates symmetrically installed at the lower end of the base; an upper mold installed at the upper end of the lower mold; an injection port opened at the upper end of the upper mold; a cooling mechanism and an exhaust mechanism installed inside the lower mold; wherein the exhaust mechanism includes an outer cover: a motor installed inside the outer cover; a rotating shaft installed at the output end of the motor; and a fan blade installed at one end of the rotating shaft;

[0008] A first air extraction pipe is installed at the upper end of the outer cover; and a second air extraction pipe is installed at the lower end of the outer cover.

[0009] Preferably, the cooling mechanism comprises a water tank, which is installed inside the lower mold, and a water inlet pipe and a water outlet pipe are respectively installed at opposite ends of the water tank, and one end of the water inlet pipe and the water outlet pipe passes through the side wall of the lower mold and is installed on the outside of the lower mold.

[0010] Preferably, a mold core is installed at the lower end of the upper mold, and a mold core is installed at the top of the water tank inside the lower mold.

[0011] Preferably, a plurality of slide grooves are provided on the side wall of the mold core, a plurality of slide grooves are each equipped with a slider, a plurality of sliders are each equipped with a first electric push rod at one end, and a plurality of the first electric push rods are each embedded in the lower end of the upper mold.

[0012] Preferably, guide columns are installed at the four corners of the lower end of the upper mold, and guide grooves are opened at the four corners of the upper end of the lower mold.

[0013] Preferably, a plurality of limit blocks are installed around the side wall of the mold core at the lower end of the upper mold, and a limit groove is provided at a position corresponding to the limit block at the upper end of the lower mold.

[0014] Preferably, an exhaust hole is opened at the center of the bottom end of the mold core, a closed groove is opened on one side of the exhaust hole, the exhaust hole is connected to the closed groove, a block is installed on the exhaust hole, a second electric push rod is installed on the side wall of the block, and one end of the second electric push rod is installed on the wall of the closed groove.

[0015] Preferably, one end of the first exhaust pipe passes through the side wall of the water tank and is installed on the exhaust hole at the lower end of the mold core, and one end of the second exhaust pipe passes through the lower mold and the base and is connected to the outside.

[0016] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0017] By setting up an exhaust mechanism to extract the gas in the membrane cavity, the hot melt adhesive is easy to fill and can fill the cavity without being affected by the gas. The interior of the plastic shell will not form voids and pores, which reduces the damage rate and improves production efficiency. When in use, turn on the motor, the motor will drive the rotating shaft connected to the motor to rotate, and the rotation of the rotating shaft will drive the fan blades to rotate. The first exhaust pipe connected to the outer cover sucks the gas in the membrane cavity through the exhaust hole, and the gas will be discharged through the second exhaust pipe, making it easy to fill the hot melt adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of the water tank and outer cover of the utility model;

[0021] Figure 4 It is a schematic diagram of the slider, the first electric push rod and the mold core of the utility model;

[0022] Figure 5 It is a schematic cross-sectional view of the mold core of the utility model.

[0023] In the figure: 1. upper mold; 2. lower mold; 3. base; 4. support plate; 5. injection port; 6. guide column; 7. limit block; 8. guide groove; 9. limit groove; 10. water tank; 11. outer cover; 12. water inlet pipe; 13. water outlet pipe; 14. second exhaust pipe; 15. mold core; 16. first exhaust pipe; 17. fan blade; 18. rotating shaft; 19. motor; 20. slider; 21. first electric push rod; 22. mold core; 23. stop block; 24. second electric push rod. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] The utility model embodiment provides a mold for making a hair dryer barrel, such as Figure 1-5 As shown, it includes a lower mold 2: a base 3 installed at the lower end of the lower mold 2; two support plates 4 symmetrically installed at the lower end of the base 3; an upper mold 1 installed at the upper end of the lower mold 2; an injection port 5 opened at the upper end of the upper mold 1; a cooling mechanism and an exhaust mechanism installed inside the lower mold 2; wherein the exhaust mechanism includes an outer cover 11: a motor 19 installed inside the outer cover 11; a rotating shaft 18 installed at the output end of the motor 19; a fan blade 17 installed at one end of the rotating shaft 18; a first exhaust pipe 16 installed at the upper end of the outer cover 11; and a second exhaust pipe 14 installed at the lower end of the outer cover 11.

[0027] The cooling mechanism includes a water tank 10, which is installed inside the lower mold 2. An inlet pipe 12 and an outlet pipe 13 are installed at opposite ends of the water tank 10, respectively. One end of the inlet pipe 12 and the outlet pipe 13 penetrate the side wall of the lower mold 2 and are installed on the outer side of the lower mold 2. When in use, water is sent into the water tank 10 through the inlet pipe 12. The water in the water tank 10 will cool the hot melt adhesive in the mold core 15. The cooled water will be discharged from the water tank 10 through the outlet pipe 13. The hot melt adhesive can be cooled by continuously putting water in and out of the water tank 10.

[0028] A mold core 22 is installed at the lower end of the upper mold 1, and a mold core 15 is installed at the top of the water tank 10 inside the lower mold 2. The mold core 22 and the mold core 15 are buckled together to form a mold cavity for forming a product.

[0029] A plurality of slide grooves are provided on the side wall of the mold core 22, and sliders 20 are installed on the plurality of slide grooves. A first electric push rod 21 is installed at one end of the plurality of sliders 20, and the plurality of first electric push rods 21 are embedded in the lower end of the upper mold 1. The finished product is demolded by the cooperation of the slider 20 and the first electric push rod 21. When in use, the first electric push rod 21 is opened, and the first electric push rod 21 will move with the slider 20 toward the direction close to the lower mold 2 to eject the finished product on the mold core 22.

[0030] Guide columns 6 are installed at the four corners of the lower end of the upper mold 1, and guide grooves 8 are opened at the four corners of the upper end of the lower mold 2. The guide columns 6 and guide grooves 8 can play a positioning and guiding role in the process of closing and opening the injection mold, so that the upper mold 1 and the lower mold 2 can be accurately matched.

[0031] A plurality of limit blocks 7 are installed around the side walls of the mold core 22 at the lower end of the upper mold 1, and a limit groove 9 is opened at the upper end of the lower mold 2 at a position corresponding to the limit block 7. The limit block 7 and the limit groove 9 cooperate with each other to prevent the upper mold 1 and the lower mold 2 from shaking during injection molding, thereby ensuring the quality of the injection molded product.

[0032] A suction hole is provided at the center of the bottom end of the mold core 15, and a closed groove is provided on one side of the suction hole. The suction hole is connected to the closed groove, and a block 23 is installed on the suction hole. A second electric push rod 24 is installed on the side wall of the block 23, and one end of the second electric push rod 24 is installed on the wall of the closed groove. When exhausting air, the second electric push rod 24 is opened, and the second electric push rod 24 will move with the block 23 away from the suction hole, and the first suction pipe 16 will be connected with the mold cavity to extract the gas in the mold cavity. After the extraction, the second electric push rod 24 is opened again, and the second electric push rod 24 will move with the block 23 towards the suction hole to block the suction hole, so that the first suction pipe 16 will be disconnected from the mold cavity.

[0033] One end of the first exhaust pipe 16 passes through the side wall of the water tank 10 and is installed on the exhaust hole at the lower end of the mold core 15. One end of the second exhaust pipe 14 passes through the lower mold 2 and the base 3 to communicate with the outside. The first exhaust pipe 16 extracts the gas in the membrane cavity through the exhaust hole, and the gas will be discharged through the second exhaust pipe 14, making it easy to fill the hot melt adhesive.

[0034] When in use, the upper mold 1 moves toward the direction approaching the lower mold 2, the mold cavity and the mold core 15 will engage to form a mold cavity for forming a product, turn on the motor 19, the motor 19 will drive the rotating shaft 18 connected to the motor 19 to rotate, the rotation of the rotating shaft 18 will drive the fan blade 17 to rotate, and the first exhaust pipe 16 connected to the outer cover 11 will suck out the gas in the film cavity through the exhaust hole, and the gas will be discharged through the second exhaust pipe 14, so that the hot melt adhesive is easy to fill. After the exhaust is completed, the hot melt plastic is injected into the mold cavity. Water is sent into the water tank 10 through the water inlet pipe 12, and the water in the water tank 10 will cool the hot melt adhesive in the mold core 15. The water used for cooling will be discharged from the water tank 10 through the water outlet pipe 13. The hot melt adhesive can be cooled by continuously putting water in and out of the water tank 10. After cooling, the upper mold 1 moves away from the lower mold 2, and the first electric push rod 21 is opened. The first electric push rod 21 will move with the slider 20 towards the lower mold 2 to eject the finished product on the mold core 22.

[0035] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A mold for making a hair dryer barrel, characterized in that: Including lower die (2): A base (3) mounted on the lower end of the lower mold (2); Two support plates (4) symmetrically mounted on the lower end of the base (3); An upper mold (1) mounted on the upper end of the lower mold (2); An injection port (5) is provided at the upper end of the upper mold (1); A cooling mechanism and an air extraction mechanism installed inside the lower mold (2); Wherein, the air extraction mechanism comprises an outer cover (11): a motor (19) mounted inside the outer cover (11); A rotating shaft (18) mounted on the output end of the motor (19); A fan blade (17) mounted on one end of the rotating shaft (18); A first air extraction pipe (16) installed at the upper end of the outer cover (11); A second air extraction pipe (14) is installed at the lower end of the outer cover (11).

2. A mold for making a hair dryer barrel according to claim 1, characterized in that: The cooling mechanism comprises a water tank (10), the water tank (10) being installed inside the lower mold (2), and a water inlet pipe (12) and a water outlet pipe (13) being installed at opposite ends of the water tank (10), respectively, and one end of each of the water inlet pipe (12) and the water outlet pipe (13) passing through the side wall of the lower mold (2) and being installed outside the lower mold (2).

3. A mold for making a hair dryer barrel according to claim 2, characterized in that: A mold core (22) is installed at the lower end of the upper mold (1), and a mold core (15) is installed at the top of the water tank (10) inside the lower mold (2).

4. A mold for making a hair dryer barrel according to claim 3, characterized in that: A plurality of slide grooves are provided on the side wall of the mold core (22), a slider (20) is installed on each of the slide grooves, a first electric push rod (21) is installed at one end of each of the sliders (20), and each of the first electric push rods (21) is embedded in the lower end of the upper mold (1).

5. A mold for making a hair dryer barrel according to claim 4, characterized in that: Guide columns (6) are installed at the four corners of the lower end of the upper mold (1), and guide grooves (8) are opened at the four corners of the upper end of the lower mold (2).

6. A mold for making a hair dryer barrel according to claim 5, characterized in that: A plurality of limit blocks (7) are installed around the side wall of the mold core (22) at the lower end of the upper mold (1), and a limit groove (9) is provided at a position corresponding to the limit block (7) at the upper end of the lower mold (2).

7. A mold for making a hair dryer barrel according to claim 6, characterized in that: The mold core (15) is provided with an exhaust hole at the center of the bottom end, a sealed groove is provided on one side of the exhaust hole, the exhaust hole is communicated with the sealed groove, a stopper (23) is installed on the exhaust hole, a second electric push rod (24) is installed on the side wall of the stopper (23), and one end of the second electric push rod (24) is installed on the wall of the sealed groove.

8. A mold for making a hair dryer barrel according to claim 7, characterized in that: One end of the first air extraction pipe (16) passes through the side wall of the water tank (10) and is installed on the air extraction hole at the lower end of the mold core (15), and one end of the second air extraction pipe (14) passes through the lower mold (2) and the base (3) and is in communication with the outside.

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