Aramid fiber bulletproof helmet mold

Abstract

The utility model provides an aramid fiber bulletproof helmet mold, and belongs to the technical field of molds. The helmet forming mold comprises an upper mold plate and a lower mold plate, the upper mold plate is provided with an inward-concave helmet forming groove, the lower mold plate is provided with a helmet forming insert in a protruding mode, and the helmet forming insert is inserted into the helmet forming groove and combined with the helmet forming groove to form a helmet forming cavity. The helmet forming cavity formed by combining the helmet forming insert and the helmet forming groove can be used for pressing a helmet, after the helmet is pressed and formed, high-pressure gas can be introduced into the helmet forming cavity from the upper side of the forming cavity through the dual-purpose gas channel structure on the upper mold plate, and therefore the helmet and the upper mold plate can be separated during mold opening; and high-pressure gas is introduced into the helmet forming cavity from the lower side of the helmet forming cavity through a dual-purpose gas channel structure on the lower mold plate, so that the helmet can be separated from the lower mold plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an aramid fiber bulletproof helmet mold. Background Art

[0002] The helmet shell (helmet shell for short) is the material basis for the helmet to obtain its protective function. With the development of science and technology and the emergence of new materials, the materials used for the helmet shell have shifted from metal, nylon composite materials, and glass fiber composite materials to high-strength and high-modulus carbon fiber composite materials, aramid fiber composite materials, etc. Aramid fiber bulletproof helmets are manufactured by stacking multiple layers of aramid fiber cloth and pressing them through a mold. After the product is pressed and formed, there will be a certain degree of adhesion between the product and the upper mold and the lower mold. However, the existing mold only has an air cap structure on the lower mold. Therefore, it is easy for the product to stick to the upper mold when opening the mold.

[0003] For example, a Chinese patent discloses a lateral pressurization mechanism of a SMC police riot helmet molding die [application number: 201410032967.8], which includes a movable die plate and a fixed die plate, a support plate is provided under the movable die plate, a pad is provided under the support plate, an upper heat insulation plate is provided under the pad plate, a core is provided under the upper heat insulation plate, an upper air valve is provided in the core, a lower heat insulation plate is provided on the fixed die plate, a cavity is provided on the lower heat insulation plate, a lower air valve is provided in the cavity, and a riot helmet is provided between the cavity and the core. The invention is characterized in that The cavity is provided with insert mounting grooves on the front, rear, left and right sides respectively, and arc-shaped swing grooves are opened on the inner walls on both sides of each insert mounting groove. A booster insert is arranged in the insert mounting groove, and arc-shaped swing blocks are formed on the outer walls on both sides of the booster insert. The arc-shaped swing blocks cooperate with the arc-shaped swing grooves. A hanging block is installed on the booster insert, and one end of the hanging block is hung on the outside of the cavity. Pressing blocks are respectively installed on the outer walls of the front, rear, left and right sides of the core, and the pressing blocks are in contact with part of the hanging blocks outside the cavity. Utility Model Content

[0004] The utility model aims to provide an aramid fiber bulletproof helmet mold in view of the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An aramid fiber bulletproof helmet mold comprises an upper mold plate and a lower mold plate, wherein the upper mold plate is provided with an inwardly concave helmet molding groove, and the lower mold plate is provided with a helmet molding insert protrudingly, wherein the helmet molding insert is inserted into the helmet molding groove and combined with the helmet molding groove to form a helmet molding cavity, and a dual-purpose airway structure connected to the helmet molding cavity is also provided in the upper mold plate and the lower mold plate.

[0007] In the above-mentioned aramid fiber bulletproof helmet mold, the dual-purpose airway structure includes a No. 1 airway structure arranged on the upper mold plate and a No. 2 airway structure arranged on the lower mold plate.

[0008] In the above-mentioned aramid fiber bulletproof helmet mold, the No. 1 airway structure includes an upper airway arranged on the upper template, the inner end of the upper airway is connected to the helmet molding cavity, and a No. 1 air valve is arranged at the connection between the upper airway and the helmet molding cavity.

[0009] In the above-mentioned aramid fiber bulletproof helmet mold, the No. 2 air duct structure includes a lower air duct arranged on the lower template, the inner end of the lower air duct extends into the helmet molding insert and the inner end of the lower air duct is connected to the helmet molding cavity, and a No. 2 air valve is arranged at the connection between the lower air duct and the helmet molding cavity.

[0010] In the above-mentioned aramid fiber bulletproof helmet mold, an in-mold trimming structure is also provided between the helmet molding insert and the upper mold plate.

[0011] In the above-mentioned aramid fiber bulletproof helmet mold, the in-mold trimming structure includes an annular portion protruding from the bottom of the helmet molding insert, the top of the annular portion is connected to the helmet molding cavity, and the outer edge of the annular portion has a vertical parting surface. When the upper mold plate moves to abut against the lower mold plate, the inner wall of the helmet molding groove can abut against the top of the vertical parting surface.

[0012] In the above-mentioned aramid fiber bulletproof helmet mold, the upper mold plate and the lower mold plate are also provided with an internal and external integrated cold and hot flow channel structure.

[0013] In the above-mentioned aramid fiber bulletproof helmet mold, the internal and external hot and cold integrated flow channel structure includes a plurality of external cooling flow channels arranged on the upper mold plate and a plurality of internal cooling flow channels arranged in the helmet molding insert.

[0014] In the above-mentioned aramid fiber bulletproof helmet mold, the bottom of the helmet molding insert is fixedly connected with a helmet base, and the helmet base is detachably connected to the lower mold plate through a plurality of bolts.

[0015] In the above-mentioned aramid fiber bulletproof helmet mold, the helmet forming insert is formed by combining two half inserts.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. The helmet molding cavity formed by the helmet molding insert and the helmet molding groove can be used to press the helmet. After the helmet is pressed and formed, high-pressure gas can be introduced from the upper side of the molding cavity into the helmet molding cavity through the dual-purpose airway structure on the upper template, so that the helmet and the upper template can be separated when the mold is opened. After the mold is opened, high-pressure gas is introduced from the lower side of the helmet molding cavity into the helmet molding cavity through the dual-purpose airway structure on the lower template, so that the helmet and the lower template can be separated.

[0018] 2. High-pressure gas can be introduced into the helmet molding cavity from the upper side through the No. 1 airway structure. When the upper template is pressed down to against the lower template, the high-pressure gas introduced into the helmet molding cavity from top to bottom can apply pressure to the upper part of the helmet to assist in helmet molding, and can also separate the upper surface of the helmet from the helmet molding groove; after the mold is opened, high-pressure gas can be introduced into the helmet molding cavity from the lower side through the No. 2 airway structure to separate the helmet from the lower template.

[0019] 3. When the helmet molding groove on the upper template cooperates with the helmet molding insert on the lower template to extrude the aramid fiber cloth, when the upper template and the lower template are against each other, the helmet extrusion is completed. At this time, the inner wall of the helmet molding groove is against the top of the vertical parting surface, and the flash extruded to the lower side of the molding cavity can be cut off.

[0020] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0023] Figure 3 It is a cross-sectional schematic diagram of the utility model in another direction;

[0024] Figure 4 It is a structural diagram of the lower template.

[0025] In the figure, the upper template 1, the lower template 2, the helmet molding groove 3, the helmet molding insert 4, the helmet molding cavity 5, the No. 1 airway structure 6, the No. 2 airway structure 7, the upper airway 8, the No. 1 air valve 9, the lower airway 10, the No. 2 air valve 11, the in-mold cutting structure 12, the annular part 13, the external cooling channel 14, the internal cooling channel 15, the helmet base 16, and the half insert 17. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 4 As shown, an aramid fiber bulletproof helmet mold includes an upper template 1 and a lower template 2, the upper template 1 is provided with an inwardly recessed helmet molding groove 3, the lower template 2 is protrudingly provided with a helmet molding insert 4, the helmet molding insert 4 is inserted into the helmet molding groove 3 and combined with the helmet molding groove 3 to form a helmet molding cavity 5, and the upper template 1 and the lower template 2 are also provided with a dual-purpose airway structure connected to the helmet molding cavity 5.

[0027] In the utility model, the helmet molding cavity 5 formed by the helmet molding insert 4 and the helmet molding groove 3 can be used to press the helmet. After the helmet is pressed and formed, high-pressure gas can be introduced into the helmet molding cavity from the upper side through the dual-purpose airway structure on the upper template, so that the helmet and the upper template can be separated when the mold is opened. After the mold is opened, high-pressure gas is introduced into the helmet molding cavity from the lower side through the dual-purpose airway structure on the lower template, so that the helmet and the lower template can be separated.

[0028] Specifically, the dual-purpose airway structure includes a No. 1 airway structure 6 provided on the upper mold plate 1 and a No. 2 airway structure 7 provided on the lower mold plate 2. High-pressure gas can be introduced into the helmet molding cavity from the upper side thereof through the No. 1 airway structure 6. When the upper mold plate is pressed down to abut against the lower mold plate, the high-pressure gas introduced into the helmet molding cavity from top to bottom can exert pressure on the upper part of the helmet to assist in the molding of the helmet, and can also separate the upper surface of the helmet from the helmet molding groove; after the mold is opened, high-pressure gas can be introduced into the helmet molding cavity from the lower side thereof through the No. 2 airway structure 7, so that the helmet and the lower mold plate can be separated.

[0029] Specifically, the No. 1 airway structure 6 includes an upper airway 8 arranged on the upper template 1, the inner end of the upper airway 8 is connected to the helmet molding cavity 5, and a No. 1 air valve 9 is arranged at the connection between the upper airway 8 and the helmet molding cavity 5. High-pressure gas can be introduced into the helmet molding cavity from the upper side through the upper airway 8. When the upper template is pressed down to abut against the lower template, the high-pressure gas introduced into the helmet molding cavity from top to bottom can apply pressure to the upper part of the helmet to assist the molding of the helmet, and can also separate the upper surface of the helmet from the helmet molding groove.

[0030] Specifically, the No. 2 air channel structure 7 includes a lower air channel 10 arranged on the lower template 2, the inner end of the lower air channel 10 extends into the helmet molding insert 4 and is connected to the helmet molding cavity 5, and a No. 2 air valve 11 is arranged at the connection between the lower air channel 10 and the helmet molding cavity 5. After the mold is opened, high-pressure gas can be introduced into the helmet molding cavity from the lower side through the lower air channel 10, so that the helmet and the lower template can be separated.

[0031] Preferably, an in-mold trimming structure 12 is further provided between the helmet forming insert 4 and the upper mold plate 1. The in-mold trimming structure 12 can cut off the flash generated when the aramid fiber is extruded.

[0032] Specifically, the in-mold trimming structure 12 includes an annular portion 13 protruding from the bottom of the helmet molding insert 4, the top of the annular portion 13 is connected to the helmet molding cavity 5, and the outer edge of the annular portion 13 has a vertical parting surface. When the upper mold plate 1 moves to abut against the lower mold plate 2, the inner wall of the helmet molding groove 3 can abut against the top of the vertical parting surface. When the helmet molding groove on the upper mold plate cooperates with the helmet molding insert on the lower mold plate to extrude the aramid fiber cloth, when the upper mold plate and the lower mold plate abut against each other, the helmet extrusion is completed. At this time, the inner wall of the helmet molding groove 3 abuts against the top of the vertical parting surface to cut off the flash extruded to the lower side of the molding cavity.

[0033] Preferably, the upper mold plate 1 and the lower mold plate 2 are further provided with an internal and external integrated hot and cold flow channel structure, which includes a plurality of external cooling flow channels 14 provided on the upper mold plate 1 and a plurality of internal cooling flow channels 15 provided in the helmet forming insert 4. The upper mold plate and the lower mold plate can be heated simultaneously by passing high-temperature steam into the external flow channel and the internal flow channel, and the helmet product can be heated from the inside and outside of the helmet product. After the helmet is pressed and formed, the helmet product can be cooled from the inside and outside of the helmet by passing coolant into the external flow channel and the internal flow channel, so as to facilitate the removal of the product.

[0034] Preferably, a helmet base 16 is fixedly connected to the bottom of the helmet forming insert 4. The helmet base 16 is detachably connected to the lower template 2 through a plurality of bolts, which can be easily assembled and disassembled. When the helmet forming insert is damaged, it does not need to be replaced together with the lower template.

[0035] Preferably, the helmet molding insert 4 is formed by combining two half inserts 17, which can further reduce the cost of repairing and replacing the helmet molding insert 4 when it is partially damaged.

[0036] The working principle of the utility model is as follows: the helmet molding cavity 5 formed by the combination of the helmet molding insert 4 and the helmet molding groove 3 can be used to press the helmet. After the helmet is pressed and formed, high-pressure gas can be introduced into the helmet molding cavity from the upper side of the helmet molding cavity through the dual-purpose airway structure on the upper template, so that the helmet and the upper template can be separated when the mold is opened. After the mold is opened, high-pressure gas is introduced into the helmet molding cavity from the lower side of the helmet molding cavity through the dual-purpose airway structure on the lower template, so that the helmet and the lower template can be separated.

[0037] High-pressure gas can be introduced into the helmet molding cavity from the upper side of the helmet molding cavity through the No. 1 airway structure 6. When the upper template is pressed down to abut against the lower template, the high-pressure gas introduced into the helmet molding cavity from top to bottom can apply pressure to the upper part of the helmet to assist in molding the helmet, and can also separate the upper surface of the helmet from the helmet molding groove; after the mold is opened, high-pressure gas can be introduced into the helmet molding cavity from the lower side of the helmet molding cavity through the No. 2 airway structure 7, so that the helmet and the lower template can be separated, and high-pressure gas can be introduced into the helmet molding cavity from the upper side of the helmet molding cavity through the upper airway 8. When the upper template is pressed down to abut against the lower template, the high-pressure gas introduced into the helmet molding cavity from top to bottom can apply pressure to the upper part of the helmet to assist in molding the helmet, and can also separate the upper surface of the helmet from the helmet molding groove; after the mold is opened, high-pressure gas can be introduced into the helmet molding cavity from the lower side of the helmet molding cavity through the lower airway 10, so that the helmet and the lower template can be separated;

[0038] The in-mold trimming structure 12 can cut off the flash generated when extruding aramid fiber. When the helmet molding groove on the upper mold plate cooperates with the helmet molding insert on the lower mold plate to extrude the aramid fiber cloth, when the upper mold plate and the lower mold plate are abutted, the helmet extrusion is completed. At this time, the inner wall of the helmet molding groove 3 abuts against the top of the vertical parting surface, and the flash extruded to the lower side of the molding cavity can be cut off. The introduction of high-temperature steam into the outer flow channel and the inner flow channel can simultaneously increase the temperature of the upper mold plate and the lower mold plate, and the helmet product can be heated from the inside and outside of the helmet product. After the helmet is pressed and formed, the introduction of coolant into the outer flow channel and the inner flow channel can cool the helmet product from both the inside and outside of the helmet, making it convenient to remove the product. The helmet base 16 is detachably connected to the lower mold plate 2 by a plurality of bolts, which can be easily assembled and disassembled. When the helmet molding insert is damaged, it does not need to be replaced together with the lower mold plate. The helmet molding insert 4 is formed by combining two half inserts 17, which can further reduce the maintenance and replacement cost of the helmet molding insert 4 when it is partially damaged.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0040] Although this article uses the upper template 1, lower template 2, helmet molding groove 3, helmet molding insert 4, helmet molding cavity 5, No. 1 air duct structure 6, No. 2 air duct structure 7, upper air duct 8, No. 1 air valve 9, lower air duct 10, No. 2 air valve 11, in-mold cutting structure 12, annular portion 13, external cooling channel 14, internal cooling channel 15, helmet base 16, half insert 17, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An aramid fiber bulletproof helmet mold, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: The upper template (1) is provided with an inwardly recessed helmet molding groove (3), the lower template (2) is provided with a protruding helmet molding insert (4), the helmet molding insert (4) is inserted into the helmet molding groove (3) and combined with the helmet molding groove (3) to form a helmet molding cavity (5), and the upper template (1) and the lower template (2) are also provided with a dual-purpose airway structure connected to the helmet molding cavity (5).

2. The aramid fiber bulletproof helmet mold according to claim 1, characterized in that: The dual-purpose airway structure comprises a No. 1 airway structure (6) arranged on the upper template (1) and a No. 2 airway structure (7) arranged on the lower template (2).

3. The aramid fiber bulletproof helmet mold according to claim 2, characterized in that: The No. 1 airway structure (6) comprises an upper airway (8) arranged on an upper template (1), the inner end of the upper airway (8) is connected to the helmet molding cavity (5), and a No. 1 air valve (9) is arranged at the connection between the upper airway (8) and the helmet molding cavity (5).

4. The aramid fiber bulletproof helmet mold according to claim 3, characterized in that: The No. 2 air duct structure (7) comprises a lower air duct (10) arranged on the lower template (2), the inner end of the lower air duct (10) extends into the helmet molding insert (4) and the inner end of the lower air duct (10) is connected to the helmet molding cavity (5), and a No. 2 air valve (11) is arranged at the connection between the lower air duct (10) and the helmet molding cavity (5).

5. The aramid fiber bulletproof helmet mold according to claim 4, characterized in that: An in-mold trimming structure (12) is also provided between the helmet molding insert (4) and the upper mold plate (1).

6. The aramid fiber bulletproof helmet mold according to claim 5, characterized in that: The in-mold trimming structure (12) comprises an annular portion (13) protruding from the bottom of the helmet molding insert (4), the top of the annular portion (13) is connected to the helmet molding cavity (5), the outer edge of the annular portion (13) has a vertical parting surface, and when the upper mold plate (1) moves to abut against the lower mold plate (2), the inner wall of the helmet molding groove (3) can abut against the top of the vertical parting surface.

7. The aramid fiber bulletproof helmet mold according to claim 6, characterized in that: The upper mold plate (1) and the lower mold plate (2) are also provided with internal and external integrated hot and cold flow channel structures.

8. The aramid fiber bulletproof helmet mold according to claim 7, characterized in that: The internal and external cold and hot integrated flow channel structure comprises a plurality of external cooling flow channels (14) arranged on the upper mold plate (1) and a plurality of internal cooling flow channels (15) arranged in the helmet molding insert (4).

9. The aramid fiber bulletproof helmet mold according to claim 8, characterized in that: The bottom of the helmet forming insert (4) is fixedly connected to a helmet base (16), and the helmet base (16) is detachably connected to the lower template (2) via a plurality of bolts.

10. The aramid fiber bulletproof helmet mold according to claim 9, characterized in that: The helmet forming insert (4) is formed by combining two half inserts (17).

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