CN211542072U

CN211542072U - Mould is used in production of regulation knot accessory

Info

Publication number: CN211542072U
Application number: CN201921427476.8U
Authority: CN
Inventors: 代忠
Original assignee: Chongqing Yong An Security And Protection Technology Co ltd
Current assignee: Chongqing Yong An Security And Protection Technology Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-09-22
Anticipated expiration: 2029-08-29

Abstract

The utility model relates to an accessory processing technology field, concretely relates to adjust and detain accessory production and use mould, including last mould, lower mould and shaping chamber, still include the water-cooling structure, the water-cooling structure includes water cavity, inlet tube and outlet pipe, and in the upper mould was located to the water cavity, inlet tube and outlet pipe all communicate with the water cavity. The molding cavity comprises an annular cavity and an arc-shaped cavity, the annular cavity is located on the outer arc surface of the arc-shaped cavity, and the annular cavity is communicated with the arc-shaped cavity. The upper die surface is fixed with a plurality of radiating fins, and the lower die bottom surface is fixed with a heating plate. The mold is used for manufacturing the adjusting buckle part, so that the demolding of the adjusting buckle part after molding is facilitated, and the manufacturing efficiency of the adjusting buckle part is accelerated. The mold for producing the adjusting buckle fittings can be applied to the manufacture and processing of the adjusting buckle fittings of the helmet hoop.

Description

Mould is used in production of regulation knot accessory

Technical Field

The utility model relates to an accessory processing technology field, concretely relates to adjust and detain mould for accessory production.

Background

The safety helmet comprises a helmet shell and a helmet liner, wherein the helmet liner comprises a helmet hoop, and the helmet hoop is an annular band and tightly surrounds the head of a person when being worn. The general cap hoop is adjustable, and the tightness degree of the cap hoop is adjusted through adjusting the buckle fittings. The adjusting buckle fittings are usually made of plastic materials, and the manufacturing method mainly comprises the following steps: and injecting a plastic melt into the mold for producing the adjusting buckle fittings, cooling to form the adjusting buckle fittings, performing finish machining on the adjusting buckle fittings, and assembling the fittings to form the adjusting buckle. The mold for producing the adjusting buckle accessory comprises an upper mold, a lower mold and a molding cavity, wherein the molding cavity is a cavity formed by enclosing the upper mold and the lower mold. The regulation of safety helmet is detained accessory and is often smaller and exquisite to in order to cooperate the shape of people's head with the equipment of the various accessories of being convenient for, regulation is detained the accessory and often has certain radian and is buckled, when utilizing the mould preparation to adjust and detain the accessory, has the problem of difficult drawing of patterns. The hardening and solidification of the plastic melt needs a certain time, and the mold in the prior art is short of a cooling structure, so that the manufacturing time is prolonged, and the manufacturing efficiency is reduced. In addition, after the plastic melt is cooled, the plastic melt is easy to stick to the wall of the forming cavity of the die, and is not easy to clean and remove, so that the production quality of the subsequent adjusting buckle is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a adjust and detain accessory production and use mould is provided, use this mould preparation to adjust and detain the accessory, the drawing of patterns of accessory is detained in the regulation after the shaping of being convenient for to the preparation efficiency of accessory is detained in the regulation has been accelerated.

In order to solve the technical problem, the utility model provides an adjust and detain accessory production and use mould, including last mould, lower mould and shaping chamber, still include the water-cooling structure, the water-cooling structure includes water cavity, inlet tube and outlet pipe, and in the upper mould was located to the water cavity, inlet tube and outlet pipe all communicate with the water cavity.

By adopting the technical scheme, the technical principle is as follows: after plastic melt is injected into a forming cavity of the mold, the plastic melt is cooled by a water cooling structure, the forming of the buckle part is adjusted in an accelerating mode, the contact time of the plastic in a melt state and the wall of the forming cavity is shortened, the adhesion of the cooled plastic on the wall of the forming cavity is reduced, and the demolding of the formed buckle part is facilitated to be adjusted. The water cooling structure comprises a water cavity, a water inlet pipe and a water outlet pipe, so that the water fluidity is ensured, the heat in the plastic melt can be taken away, and the cooling molding of the plastic melt is accelerated.

The beneficial technical effects are as follows: water can take away the heat in the mould in the water cooling structure for the solidification of plastic melt reduces the plastic melt bonding after the cooling and in the shaping cavity wall's possibility, helps fashioned regulation to detain the drawing of patterns of accessory.

Further, the molding cavity comprises an annular cavity and an arc-shaped cavity, the annular cavity is located on the outer arc surface of the arc-shaped cavity, and the annular cavity is communicated with the arc-shaped cavity.

By adopting the technical scheme, the adjusting buckle part prepared by the forming cavity with the structure is provided with the arc-shaped part and the cylindrical part which are connected with each other. When the safety helmet is used, the inner arc surface of the arc-shaped part is in contact with the head of a person, and the shape of the head of the person is matched, so that the safety helmet is more stable and comfortable to wear. The middle of the cylindrical part has a certain space which can be used for installing an adjusting structure, and the adjusting structure can adjust the tightness of the cap band to adapt to the head circumference of a user.

Furthermore, a runner is arranged on the upper die and used for injecting plastic melt into the molding cavity.

By adopting the technical scheme, the runner is positioned on the upper die, and when the plastic melt is poured into the molding cavity, the plastic melt can flow into the molding cavity by utilizing the self gravity of the plastic melt without additional power.

Furthermore, one end of the flow passage is opened on the upper surface of the upper die, and the other end of the flow passage is opened on the cavity wall of the annular cavity close to the upper surface of the upper die.

By adopting the technical scheme, the direct opening of the flow channel is arranged on the annular cavity close to the cavity wall on the upper surface of the upper die, so that the molding cavity can be completely filled with the plastic melt. If the runner opens into other parts of the mold cavity, the following conditions may exist: the mold cavity is not yet filled and the plastic melt overflows at the inlet of the runner.

Further, go up the mould with be equipped with location structure between the lower mould, location structure is used for preventing to go up the mould and takes place relative displacement between the lower mould.

By adopting the technical scheme, the following conditions are prevented: in the forming process of the adjusting buckle part, defective products or forming failure are generated due to the relative displacement of the upper die and the lower die.

Furthermore, the positioning structure comprises a positioning groove and a positioning column; the positioning groove is positioned on the lower surface of the upper die, and the positioning column is positioned on the upper surface of the upper die; when the upper die and the lower die are enclosed to form a forming cavity, the positioning columns penetrate through the corresponding positioning grooves.

By adopting the technical scheme, the positioning column and the positioning groove are simple in structure and easy to prepare and operate.

Furthermore, the number of the positioning columns and the number of the positioning grooves are 4.

By adopting the technical scheme, the relative displacement of the upper die and the lower die is better prevented by the structures of the positioning columns and the positioning grooves.

Furthermore, the water inlet and the water outlet of the water cavity are both positioned on the upper surface of the upper die.

By adopting the technical scheme, the water cavity can be fully filled with water, and the cooling efficiency is improved.

Furthermore, a plurality of radiating fins are fixed on the surface of the upper die, and the radiating fins are made of metal aluminum.

By adopting the technical scheme, the radiating fins increase the contact area between the surface of the upper die and the air, so that the adjusting buckle part production die can radiate heat more easily, the adjusting buckle part production speed is further accelerated, the adhesion of a plastic melt on the wall of the forming cavity in the production process is reduced, and the product quality is improved. When a user uses the die to produce the adjusting buckle part, if the heat of the plastic melt is not too high, the heat can be dissipated only by using the radiating fins, so that the water resource is saved; if the heat of the plastic melt is too high, a water cooling system can be used at the same time, so that the forming speed of the buckle part is increased and the adhesion of the plastic melt is avoided.

Furthermore, a heating plate is fixed on the bottom surface of the lower die.

Adopt above-mentioned technical scheme, use the hot plate to heat the lower mould, the lower mould is with heat transfer for the chamber wall of the downside of shaping chamber, because go up the mould and close with the lower mould lid, go up the mould with heat transfer for last mould, and then the chamber wall of the upside of heating shaping chamber promotes to glue melting at the plastic material who becomes the chamber wall, then will go up mould and lower mould again and part, the manual plastic material that has already melted of cleaing away.

Drawings

Fig. 1 is a front view of a mold for producing an adjustment buckle part in embodiment 1 of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is an upper die bottom view of embodiment 1 of the present invention.

Fig. 4 is a sectional view B-B of fig. 3.

Fig. 5 is a front view of the mold for producing the adjusting buckle part in embodiment 2 of the present invention.

Fig. 6 is a front view of the mold for producing the adjusting buckle part in embodiment 3 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: go up mould 1, lower mould 2, hot plate 3, fin 4, electric wire 5, inlet tube 6, outlet pipe 7, water inlet 8, delivery port 9, water cavity 10, become die cavity 11, runner 12, column arch 13, annular chamber 14, arc chamber 15, reference column 16, constant head tank 17.

Example 1

As shown in fig. 1, the mold for producing the adjustment buckle part includes an upper mold 1 and a lower mold 2. As shown in fig. 2, the upper mold 1 is covered on the lower mold 2, and a cavity is enclosed between the upper mold 1 and the lower mold 2, and the cavity is a molding cavity 11 shown in fig. 2. The molding cavity 11 comprises an annular cavity 14 and an arc-shaped cavity 15, the annular cavity 14 is close to the upper surface of the upper die 1, the arc-shaped cavity 15 is far away from the upper surface of the upper die 1, the annular cavity 14 is located on the outer arc surface of the arc-shaped cavity 15, and the lower portion of the annular cavity 14 is communicated with the arc-shaped cavity 15. The center axis of the annular cavity 14 passes through the center of the arc surface of the arc-shaped cavity 15 and is perpendicular to the connection line of the two end points of the arc surface. The annular chamber 14 encloses a cylindrical protrusion 13, in this embodiment the cylindrical protrusion 13 is cylindrical, the cylindrical protrusion 13 is integrally formed with the upper mold 1, and the lower surface of the cylindrical protrusion 13 matches the shape of the lower chamber wall of the arc-shaped chamber 15. When the upper die 1 covers the lower die 2, the lower surface of the columnar bulge 13 and the lower cavity wall of the corresponding arc-shaped cavity 15 form tight combination. The forming cavity 11 with the shape can be used for manufacturing an adjusting buckle part with a cambered surface structure, and the adjusting buckle part can be applied to the production of the adjusting buckle belt of the safety helmet. The adjustment buckle member includes an arc-shaped portion and a cylindrical portion. When the safety helmet is used, the inner arc surface of the arc-shaped part is in contact with the head of a person, so that the safety helmet is more stable and comfortable to wear. The cylindrical portion has a space therebetween for receiving a member such as an adjustment structure for adjusting the tightness of the band to fit the head circumference of the user.

The molding cavity 11 is communicated with the outside through a flow passage 12, the flow passage 12 is arranged in the upper die 1, one end of the flow passage 12 is opened on the upper surface of the upper die 1, and the other end of the flow passage 12 is communicated to the top of the annular cavity 14. The runner 12 is used for injecting the plastic melt into the molding cavity 11.

As shown in fig. 2, the lower surface of the upper die 1 is provided with a positioning groove 17, the upper surface of the lower die 2 is provided with a positioning column 16, and when the upper die 1 and the lower die 2 are covered, the positioning column 16 is inserted into the corresponding positioning groove 17. As shown in fig. 3, the number of the positioning grooves 17 is four, and the four positioning grooves 17 are arranged in a radial symmetry. There are also four corresponding positioning posts 16 (not shown), and the four positioning posts 16 are also arranged in a radial symmetry.

As shown in fig. 2 and 4, the mold for producing the adjusting buckle part further comprises a water cooling structure, the water cooling structure comprises a water cavity 10, the water cavity 10 is arranged inside the upper mold 1, and a water inlet 8 and a water outlet 9 of the water cavity 10 are arranged on the upper surface of the upper mold 1. As shown in fig. 2, the water inlet 8 is communicated with a water inlet pipe 6, and the water outlet 9 is communicated with a water outlet pipe 7. And the water chamber 10 is not communicated with the molding chamber 11.

The specific implementation process is as follows:

when the adjusting buckle part is manufactured, the upper die 1 is covered on the lower die 2, so that the positioning column 16 penetrates into the corresponding positioning groove 17, and the relative movement in the horizontal direction between the upper die 1 and the lower die 2 is ensured not to occur. And (3) pouring the plastic melt into the molding cavity 11 through the flow channel 12, after the pouring is finished, opening a water source to enable water to flow into the water cavity 10 from the water inlet pipe 6, and after the water cavity 10 is filled, enabling the water to flow out from the water outlet pipe 7. The flowing water can take away the heat in the upper die 1, so that the solidification of the plastic melt is accelerated, and the possibility that the plastic melt is adhered to the wall of the forming cavity 11 is reduced. In this embodiment, set up water cooling structure in last mould 1, because the structure on shaping chamber 11 upper portion is comparatively complicated, has the structure of annular chamber 14, and the heat is difficult for giving off, forms the sticky of plastic melt in the chamber wall easily. In this embodiment, the upper mold 1 and the lower mold 2 are both 817M40 (one of steel materials, CrNiMo steel), and the plastic melt is ABS (ABS plastic is a terpolymer formed by three monomers of acrylonitrile (a), butadiene (B), and styrene (S)).

Example 2

This embodiment is basically the same as embodiment 1, except that, as shown in fig. 5, a plurality of heat dissipation fins 4 are fixed (welded) on the upper surface of the upper mold 1, and the heat dissipation fins 4 are made of metal aluminum, which has a better heat conductivity. The cooling fin 4 is linear array and two liang of parallels, and cooling

fin

4 and 1 upper surface of last mould are perpendicular, and cooling fin 4 has increased the area of contact of last mould 1 surface and air for adjust and detain accessory production and dispel the heat with the mould more easily, further accelerated the production speed that the accessory was detained in the regulation, reduced in the production process plastics fuse-element in 11 chamber walls that become glue, improved product quality. When a user uses the die to produce the adjusting buckle part, if the heat of the plastic melt is not too high, the heat can be dissipated by using the radiating fins 4, so that water resources are saved; if the heat of the plastic melt is too high, a water cooling system can be used at the same time, so that the forming speed of the buckle part is increased and the adhesion of the plastic melt is avoided.

Example 3

This embodiment is basically the same as embodiment 2, except that, as shown in fig. 6, a heating plate 3 is welded to the bottom of the lower mold 2, and the heating plate 3 is connected to the commercial power through an electric wire 5. After the molded adjusting buckle part is taken out of the mold, some plastic materials may be adhered to the wall of the molding cavity 11, and the direct manual cleaning is time-consuming and labor-consuming. Use hot plate 3 to heat lower mould 2, lower mould 2 gives the chamber wall of the downside of shaping chamber 11 with heat transfer, because go up

mould

1 and 2 lid of lower mould and close the contact, lower mould 2 gives last mould 1 with heat transfer again, and then heats the chamber wall of the upside of shaping chamber 11, promotes to glue melting at the plastic material who becomes 11 chamber walls of shaping chamber, then will go up mould 1 and lower mould 2 again and part, and the manual plastic material who has cleared away and has melted.

While the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the embodiments and that various changes and modifications may be effected therein by those skilled in the art without departing from the spirit of the invention. These should also be construed as the scope of the present invention, and they should not be construed as affecting the effectiveness of the practice of the present invention or the applicability of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.

Claims

1. Adjust and detain mould for accessory production, including last mould, lower mould and shaping chamber, its characterized in that still includes water cooling structure, water cooling structure includes water cavity, inlet tube and outlet pipe, and in the upper mould was located to the water cavity, inlet tube and outlet pipe all communicate with the water cavity.

2. The mold for producing an adjustment buckle fitting according to claim 1, characterized in that: the molding cavity comprises an annular cavity and an arc-shaped cavity, the annular cavity is located on the outer arc surface of the arc-shaped cavity, and the annular cavity is communicated with the arc-shaped cavity.

3. The mold for producing an adjustment buckle fitting according to claim 2, characterized in that: and the upper die is provided with a runner, and the runner is used for injecting plastic melt into the molding cavity.

4. The mold for producing an adjustment buckle fitting according to claim 3, characterized in that: one end of the flow channel is opened on the upper surface of the upper die, and the other end of the flow channel is opened on the cavity wall of the annular cavity close to the upper surface of the upper die.

5. The mold for producing an adjustment buckle fitting according to claim 4, characterized in that: the upper die and the lower die are provided with a positioning structure, and the positioning structure is used for preventing relative displacement between the upper die and the lower die.

6. The mold for producing an adjustment buckle fitting according to claim 5, characterized in that: the positioning structure comprises a positioning groove and a positioning column; the positioning groove is positioned on the lower surface of the upper die, and the positioning column is positioned on the upper surface of the upper die; when the upper die and the lower die are enclosed to form a forming cavity, the positioning columns penetrate through the corresponding positioning grooves.

7. The mold for producing an adjustment buckle fitting according to claim 6, characterized in that: the number of the positioning columns and the number of the positioning grooves are 4.

8. The mold for producing an adjustment buckle fitting according to claim 7, characterized in that: and the water inlet and the water outlet of the water cavity are both positioned on the upper surface of the upper die.

9. The mold for producing an adjustment buckle fitting according to claim 8, characterized in that: a plurality of radiating fins are fixed on the surface of the upper die and made of metal aluminum.

10. The mold for producing an adjustment buckle fitting according to claim 9, characterized in that: and a heating plate is fixed on the bottom surface of the lower die.