An anti-ballistic plate forming device

Abstract

The present invention discloses a bulletproof plate forming device, which relates to the field of plastic forming. It includes a machine body, and a support table and a pressing table are fixedly installed at the bottom of the machine body. A pressing device is placed between the pressing table and the support table. The pressing device includes a pressing block fixedly installed on the pressing table and a plurality of support molds. The bulletproof plate raw materials are placed between adjacent support molds. A pressing part is provided on the support mold, and a hydraulic bladder is placed above the pressing part. The bottom of the pressing part is in contact with the upper side of the bulletproof plate. Under the action of the hydraulic bladder, the liquid will transmit the pressure in all directions, and the direction is always perpendicular to the supporting surface. The pressure generated by the hydraulic bladder will act on the cut raw materials through the pressing part. The generated pressure is perpendicular to the arc surface of the pressing part and the curved surface of the bulletproof plate, ensuring that the magnitude of the force acting on the bulletproof plate is uniform. Along the direction of force transmission, the thickness of the pressed raw materials is also the same, which can ensure that the raw materials with the same thickness are uniformly stressed.

Description

Technical Field

[0001] The present invention relates to the field of plastic molding, and specifically to a forming device for bulletproof plates. Background Art

[0002] As a main raw material for bulletproof vests or tactical vests, the main materials of bulletproof plates include alumina, silicon carbide, boron carbide, silicon nitride, titanium boride, etc. Bulletproof plates are mainly composed of an insert back plate made of aramid or ultra-high molecular weight high-strength and high-modulus polyethylene fiber composite material, and a bulletproof panel made of alumina, silicon carbide, or boron carbide as raw materials.

[0003] The main manufacturing process of bulletproof plates is as follows: First, lay the polyethylene fiber composite material (PE material) according to the design grade of the bulletproof plate, and then cut it into small raw materials according to the size of the mold. Then, lay the cut raw materials on the mold and use a hydraulic press to press and form. After pressing and forming, use laser cutting to cut into the shape of the insert plate, with a standard cut corner size of 25*30 cm, and correct the rounded corners.

[0004] When pressing and forming the cut raw materials, the pressure of the press directly presses downward on the raw materials for hot pressing and forming, as shown in Figure 1 and Figure 2 shown. The pressure provided by the press is vertically downward. When pressing the bulletproof plate, the pressure received at the lowest point of the arc part of the bulletproof plate is perpendicular to the tangent direction. Along the direction of the force, the thickness at the lowest point is the thinnest, as shown by the arrow in Figure 1 shown. However, from the lowest point of the bulletproof plate to both sides, the arc gradually increases, but the pressure borne by the mold is still vertically downward. The vertically downward pressure F will be decomposed into a force F1 along the tangent direction and a force F2 along the normal direction. That is to say, although the pressure F borne by the mold will also act on the bulletproof plate, along the direction of the force F, the thickness of the bulletproof plate is relatively large, and the greater the radian of the arc pressing plate, the greater the thickness. Due to the different pressing thicknesses in the direction of force transmission, the pressing effect of the bulletproof plate is not uniform. That is: along the direction of the force at the lowest point of the curved surface of the bulletproof plate, the thickness of the raw material is the thinnest and the pressing effect is the best. For other parts, along the direction of the force, the thickness of the raw material is relatively large, which affects the pressing and forming effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a forming device for bulletproof plates to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: An anti-ballistic plate forming device includes a machine body. A support table is fixedly installed at the bottom of the machine body. A hydraulic rod is fixedly installed at the upper end of the machine body. The output end of the hydraulic rod is fixedly installed with a pressing table. A pressing device is placed between the pressing table and the support table. The pressing device includes a pressing block fixedly installed with the pressing table and a plurality of support molds. The plurality of support molds are vertically distributed up and down. The raw materials of the anti-ballistic plate are placed between adjacent support molds. A pressing part is provided on the support mold. A hydraulic bladder is placed above the pressing part. The bottom of the pressing part contacts the upper side of the anti-ballistic plate. The hydraulic rod provides pressure to the pressing part. Under the action of the hydraulic bladder, the hydraulic bladder generates a pressure perpendicular to the curved surface of the anti-ballistic plate on the pressing part.

[0007] Preferably, a placement groove for placing the hydraulic bladder is opened at the upper part of the support mold. A conduction plate is also placed above the placement groove. The conduction plate is located above the hydraulic bladder.

[0008] The pressing part is an arc-shaped sheet structure and is fixedly connected to the bottom of the placement groove. The bottom of the pressing part contacts the anti-ballistic plate.

[0009] The bottom of the anti-ballistic plate is placed on the conduction plate of the lower support mold.

[0010] Preferably, a space is left between two adjacent support molds up and down. During the pressing and forming process, it can meet the pressing movement between the support molds.

[0011] Preferably, the support mold is provided with a placement groove that penetrates up and down. The pressing part is placed inside the placement groove. The pressing part can slide up and down in the placement groove.

[0012] The pressing part is a cuboid cavity structure with an open top. The bottom of the pressing part is an arc-shaped structure. The bottom of the pressing part contacts the anti-ballistic plate. A hydraulic bladder is placed in the cavity of the pressing part. A conduction plate is placed above the hydraulic bladder. The bottom of the anti-ballistic plate is placed on the conduction plate of the lower pressing part.

[0013] Preferably, a support block is fixedly installed on the inner cavity side wall of the pressing part. A sliding groove is opened on the outer side of the conduction plate. The sliding groove is installed together with the support block, and the sliding groove can slide on the outer side of the support block.

[0014] Preferably, the height of the pressing part is greater than the depth of the placement groove. And a stop bar is fixedly installed at the outer edge of the top of the pressing part. When the pressing part slides down, the stop bar limits the pressing part to prevent the pressing part from falling out of the placement groove.

[0015] Preferably, the adjacent support molds up and down are fitted together to provide side protection for the pressing of the pressing part and the anti-ballistic plate.

[0016] Preferably, a spring is fixedly installed at the bottom of the pressing table, and during pressing, the spring contacts the uppermost supporting die.

[0017] Preferably, guide columns are provided between the contact surfaces of adjacent supporting dies.

[0018] Preferably, the hydraulic bladder is a cavity structure with a cuboid shape, and its side wall includes an inner core woven from metal wires, and a rubber layer is pressed on the outside of the inner core; the inside of the hydraulic bladder is filled with liquid for transmitting pressure.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] In the present invention, by providing a supporting die, a pressing part, a hydraulic bladder, and a conduction plate, the hydraulic bladder is located above the pressing part. When the press provides downward pressure, the pressure acts on the conduction plate and is transmitted to the hydraulic bladder through the conduction plate. Due to the characteristics of liquid pressure, the liquid will transmit the pressure in all directions, and the direction is always perpendicular to the supporting surface. The pressure generated by the hydraulic bladder will act on the cut raw material through the pressing part, and the generated pressure is perpendicular to the arc surface of the pressing part and the curved surface of the bulletproof insert plate, which ensures that the magnitude of the force acting on the bulletproof insert plate is the same. Since the direction of force transmission is the reverse of the normal line, along the direction of force transmission, the thickness of the pressed raw material is also the same, which can ensure that the raw materials of the same thickness are uniformly stressed, and the forming effect of the bulletproof pressing plate is better when forming the bulletproof insert plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of pressing and forming of the prior art of the present invention;

[0022] Figure 2 is of the present invention Figure 1 enlarged view of part B in;

[0023] Figure 3 is the overall structure diagram of the present invention;

[0024] Figure 4 is a cross-sectional view of the hydraulic bladder and the supporting die of Embodiment 1 of the present invention;

[0025] Figure 5 is an exploded view of the hydraulic bladder and the supporting die of Embodiment 1 of the present invention;

[0026] Figure 6 is a cross-sectional view of the supporting die and the pressing table of Embodiment 2 of the present invention;

[0027] Figure 7 is an exploded view of the hydraulic bladder and the supporting die of Embodiment 2 of the present invention;

[0028] Figure 8 is a structure diagram of the conduction plate, the pressing part, and the hydraulic bladder of Embodiment 2 of the present invention;

[0029] Figure 9 This is a cross-sectional view of the support block and the chute in Embodiment 2 of the present invention.

[0030] In the figure: 1, the body; 2, the hydraulic rod; 3, the column; 4, the support table; 5, the pressing device; 6, the pressing block; 7, the spring; 8, the pressing table; 9, the hydraulic bladder; 10, the support mold; 11, the conduction plate; 12, the guide post; 13, the pressing part; 14, the support block; 13, the pressing part; 15, the chute. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0032] Please refer to Figures 3-5 , this embodiment provides a bulletproof plate forming device, including a body 1. A support table 4 is provided at the bottom of the body 1. Columns 3 are fixedly installed between the four corners at the bottom of the body 1 and the four corners at the upper end of the support table 4. A hydraulic rod 2 is fixedly installed at the upper end of the body 1. A pressing table 8 is fixedly installed at the output end of the hydraulic rod 2. A pressing device 5 is placed between the pressing table 8 and the support table 4, as Figure 3 shown.

[0033] As Figure 3 and Figure 4 shown, the pressing device 5 includes a pressing block 6 and a plurality of support molds 10. The pressing block 6 is fixedly installed at the bottom of the pressing table 8. The support molds 10 are placed vertically up and down on the support table 4. The contact surfaces of two adjacent support molds 10 are arc-shaped. The raw materials of the curved bulletproof plate laid are placed between adjacent support molds 10. A guide post 12 is fixedly installed on the contact surface of the lower support mold 10. A guide hole matching the guide post 12 is provided on the upper support mold 10.

[0034] A placement groove is provided at the upper part of the support mold 10. A pressing part 13 is fixedly installed at the bottom of the placement groove. As Figure 4 and Figure 5 shown, the pressing part 13 is an arc-shaped sheet structure. The bottom of the pressing part 13 contacts the raw materials of the curved bulletproof plate, and the bottom of the raw materials of the curved bulletproof plate contacts the conduction plate 11 of the support mold 10 located below. As Figure 5As shown. The conduction plate 11 of the topmost support mold 10 is a cuboid structure, while the tops of the conduction plates 11 of the other support molds 10 are arc-shaped structures that are recessed downward, and the raw material of the curved bulletproof insert plate is placed in the arc-shaped structure.

[0035] A hydraulic bladder 9 is also placed in the placement groove. The hydraulic bladder 9 is located above the pressing part 13 and contacts the pressing part 13. A conduction plate 11 is also placed at the top opening of the placement groove. The conduction plate 11 is located above the hydraulic bladder 9, and the bottom of the conduction plate 11 contacts the hydraulic bladder 9. As Figure 3 and Figure 4 shown, there is a space between adjacent support molds 10. When forming the bulletproof pressing plate, this space can meet the pressing movement between the support molds 10 and provide sufficient forming pressure for the bulletproof pressing plate.

[0036] In this embodiment, a heating part and a cooling pipe are also provided on the part of the support mold 10 where no placement groove is opened. The designs of the heating part and the cooling pipe are the same as the existing designs and will not be elaborated here.

[0037] Four springs 7 are fixedly installed at the bottom of the pressing table 8. The springs 7 contact the position near the edge of the upper end of the support mold 10 and provide a downward elastic force to the support mold.

[0038] In this embodiment, the hydraulic bladder 9 is designed as a bladder-like structure similar to a cuboid. As Figure 5 shown. The side wall of the hydraulic bladder 9 includes an inner core woven by metal wires. When the metal wires are woven, a multi-layer weaving technique is adopted, and a twill woven net composed of multiple metal wires forms warp wires and weft wires, which has sufficient flexibility. A rubber layer is pressed on the outside of the inner core. The inside of the hydraulic bladder 9 is filled with a liquid, preferably a non-Newtonian fluid. As Figure 4 shown, a closed structure is formed between the conduction plate 11 and the pressing part 13 to wrap the hydraulic bladder 9 in the placement cavity. When the hydraulic bladder 9 is squeezed, the liquid inside the hydraulic bladder 9 will press the shell of the hydraulic bladder 9 against the side wall of the placement cavity due to the pressure. Moreover, since the placement cavity is closed by the conduction plate 11 and the pressing part 13, the hydraulic bladder 9 will not be damaged due to excessive pressure, and the liquid inside the hydraulic bladder 9 will generate an outward pressure.

[0039] As Figure 4 shown, when forming the curved bulletproof insert plate, the pressing table 8 will move downward under the drive of the hydraulic rod 2. The pressing table 8 will bring the pressing block 6 into contact with the conduction plate 11 of the topmost support mold 10 and generate a downward pressure. The conduction plate 11 will move downward in the placement groove and generate pressure on the hydraulic bladder 9. When the hydraulic bladder 9 is pressed, the liquid inside it will generate a force perpendicular to the tangent of the arc part. As Figure 4As shown by the arrow. That is to say, due to the continuous property of the liquid, the liquid can transmit the pressure it receives unchanged in all directions and perpendicular to the supporting surface. The pressure generated by the hydraulic bladder 9 is perpendicular to the arc surface of the pressing part 13 and directly acts on the curved bulletproof insert a, providing a force perpendicular to the tangent direction of the curved surface of the curved bulletproof insert a to the curved bulletproof insert a. Through the continuous property of the liquid, the pressure on the curved surface of the curved bulletproof insert a is the same, the force generated for bulletproof is more uniform, and the generated force is in the same direction as the normal direction of the curved surface, and the pressure can be fully applied to the curved bulletproof insert. That is, the pressure of the hydraulic rod 2 can be fully applied to the curved bulletproof insert without force loss. Moreover, since the acting force is perpendicular to the curved surface of the curved bulletproof insert, compared with the existing simple downward pressure, in this embodiment, the pressure provided to the curved surface of the curved bulletproof insert is the same, and the pressing effect on the curved surface of the curved bulletproof insert is better. Embodiment

[0040] In this embodiment, the difference from Embodiment 1 is that the pressing part 13 and the supporting mold 10 are independently and separately arranged. That is: a placement groove penetrating up and down is opened on the supporting mold 10, the pressing part 13 is placed in the placement groove, and the pressing part 13 can slide up and down in the placement groove.

[0041] The specific design scheme of the pressing part 13 is as follows: As Figure 6 and Figure 7 shown, the pressing part 13 is a cuboid cavity structure with an open top, the bottom of the pressing part 13 is an arc structure, a hydraulic bladder 9 is placed at the bottom of the inner cavity of the pressing part 13, a conduction plate 11 is placed in the cavity above the hydraulic bladder 9, and the conduction plate 11 can slide in the cavity; in this embodiment, the arc structure contacts the upper side of the curved bulletproof insert a, and the curved bulletproof insert a is placed on the conduction plate 11 of the lower supporting mold 10. When pressing the curved bulletproof insert a, the pressure of the hydraulic rod 2 will be directly transmitted to the conduction plate 11, and the conduction plate 11 will transmit the pressure layer by layer downward, so as to provide pressure to the curved bulletproof insert a.

[0042] In this embodiment, as Figures 6-8 shown, the height of the pressing part 13 is greater than the depth of the placement groove. A retaining strip is fixedly installed at the outer edge of the cuboid of the pressing part 13. When the pressing part 13 slides down to the bottom in the placement groove, the retaining strip contacts the top edge of the placement groove to limit the pressing part 13 and prevent the pressing part 13 from falling out of the placement groove. Especially when placing the curved bulletproof insert layer by layer, the supporting mold 10 needs to be lifted upward. By setting the retaining strip, when the supporting mold 10 is lifted, under the action of the retaining strip, the supporting mold 10 can move upward together with the pressing part 13, thus facilitating the placement of the raw material of the curved bulletproof insert.

[0043] Since the pressing part 13 can slide independently on the support die 10, there is no need to reserve space between adjacent support dies 10. The support dies 10 arranged up and down can be stacked together in an up-and-down fitting manner, as Figure 6 shown. A pressing cavity is formed between the support dies 10 arranged up and down, and the side wall of the support die 10 provides a pressing space for the pressing of the curved surface bulletproof insert. When pressing the curved surface bulletproof insert a, the pressing part 13 can move up and down in the pressing cavity, so that the curved surface bulletproof insert a is pressed into shape, providing protection for the pressing of the curved surface bulletproof insert a.

[0044] In this embodiment, as an independent part, when the pressing part 13 presses the curved surface bulletproof insert into shape, the pressing part 13 can move up and down freely in the placement groove, and the arc surface of the pressing part will deform slightly according to the curved surface of the curved surface bulletproof insert, which can better realize the force transmission.

[0045] In this embodiment, as Figure 8 and Figure 9 shown, the conduction plate 11 also adopts a design that can slide up and down inside the pressing part 13. In order to prevent the conduction plate 11 from falling off the pressing part 13, a support block 14 is fixedly installed on the inner cavity side wall of the pressing part 13, and a sliding groove 15 is formed on the side surface of the conduction plate 11 in contact with the pressing part 13. The sliding groove 15 is installed together with the support block 14, and the sliding groove 15 can slide outside the support block 14. The sliding groove 15 and the support block 14 limit the conduction plate 11, which can prevent the conduction plate 11 from falling off upward into the pressing part 13.

[0046] In the above two embodiments, since the pressing part 13 can slide in the placement groove, when pressing the curved surface bulletproof insert into shape, after the pressure generated by the hydraulic rod 2 on the conduction plate 11 acts on the hydraulic capsule 9, the hydraulic capsule 9 will transfer the pressure to the bottom of the pressing part 13, and the direction of the pressure is perpendicular to the tangent of the arc surface at the bottom of the pressing part. That is, the force received by the bottom of the pressing part 13 is along the normal direction of the arc surface. Since the arc surface contacts and presses the curved surface bulletproof insert, this force is also directly along the normal direction of the curved surface bulletproof insert.

[0047] When the force is transmitted along the normal direction of the curved surface bulletproof insert, as Figure 2 shown, along the direction of force transmission, the thickness of the curved surface bulletproof insert is always the thinnest, and the force in the normal direction can act completely on the curved surface of the curved surface bulletproof insert. Compared with the existing vertically downward pressing and forming method (as Figure 1As shown, along the direction of arrow F, the thickness of the laminated material is greater than the thickness of the material along the normal direction of the curved surface. In the direction of the acting force, the thickness of the material compressed by the force is reduced, and the lamination forming effect of the curved surface bulletproof panel is better. In addition, since the direction of the force is along the normal direction of the curved surface, the thickness of the curved surface bulletproof panel is the same in the normal direction, and the force transmitted downward by the hydraulic bladder 9 along the normal direction of the curved surface is the same, and the acting thickness is the same, so the force on the curved surface bulletproof panel during lamination forming is more uniform.

[0048] When forming the curved surface bulletproof panel a, the PE cloth is laid and cut into the size of the support mold 10, and then the cut raw materials are placed layer by layer between the two support molds 10. It is necessary to ensure that the support molds 10 are completely aligned. After all the raw materials are placed, the hydraulic rod 2 can be started to work. The telescopic end of the hydraulic rod 2 extends and moves the pressing table 8 downward to laminate and form the PE raw materials on the support mold 10.

[0049] In a further embodiment, the lamination part 13 can also be directly omitted and the hydraulic bladder 9 can be used as the lamination part. That is: the bottom surface of the hydraulic bladder 9 directly contacts the upper end surface of the curved surface bulletproof panel, and the pressure generated by the hydraulic bladder 9 can directly act on the curved surface bulletproof panel, eliminating the lamination part 13 as a transmission part. Since the hydraulic bladder 9 directly contacts the curved surface bulletproof panel, the pressure generated by the hydraulic bladder 9 must be perpendicular to the tangent direction of the curved surface bulletproof panel, and the lamination forming of the curved surface bulletproof panel can also be achieved. It should be noted that when placing the cut PE raw materials, it is necessary to ensure that the raw materials are unfolded neatly and there are no raised or wrinkled parts.

[0050] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bulletproof plate forming device, comprising a body (1), a support platform (4) fixedly mounted on the bottom of the body (1), a hydraulic rod (2) fixedly mounted on the upper end of the body (1), and a press platform (8) fixedly mounted on the output end of the hydraulic rod (2), characterized in that: A pressing device (5) is placed between the pressing platform (8) and the supporting platform (4), and the pressing device (5) includes a pressing block (6) fixedly mounted on the pressing platform (8) and a plurality of supporting molds (10), wherein the plurality of supporting molds (10) are vertically distributed up and down, and bulletproof insert plate raw materials are placed between adjacent supporting molds (10), and a pressing portion (13) is provided on the supporting mold (10), and a hydraulic bag (9) is placed on the upper side of the pressing portion (13), and the bottom of the pressing portion (13) contacts the upper side of the bulletproof insert plate, and the hydraulic rod (2) provides pressure to the pressing portion (13), and under the action of the hydraulic bag (9), the hydraulic bag (9) generates pressure on the pressing portion (13) perpendicular to the curved surface of the bulletproof insert plate; The upper portion of the supporting mold (10) is provided with a placement groove for placing the hydraulic bag (9), and a conductive plate (11) is also placed on the upper portion of the placement groove, and the conductive plate (11) is located on the upper portion of the hydraulic bag (9); The pressing portion (13) is an arc-shaped sheet structure and is fixedly connected to the bottom of the placement groove, and the bottom of the pressing portion (13) is in contact with the bulletproof inserting plate; The bottom of the bulletproof insert is placed on a conductive plate (11) located on the lower supporting mold (10).

2. The bulletproof plate forming equipment according to claim 1, characterized in that: A space is left between the two upper and lower adjacent support dies (10), which can satisfy the pressing movement between the support dies (10) during pressing and forming.

3. The bulletproof plate forming equipment according to claim 2, characterized in that: The supporting mold (10) is provided with a placement groove running through the upper and lower parts, a pressing portion (13) is placed inside the placement groove, and the pressing portion (13) can slide up and down in the placement groove; The pressing part (13) is a rectangular cavity structure with an open top. The bottom of the pressing part (13) is an arc-shaped structure. The bottom of the pressing part (13) contacts the bulletproof insert plate. A hydraulic bag (9) is placed in the cavity of the pressing part (13), and a conductive plate (11) is placed above the hydraulic bag (9); the bottom of the bulletproof insert plate is placed on the conductive plate (11) located at the lower pressing part (13).

4. The bulletproof plate forming equipment according to claim 3, characterized in that: A support block (14) is fixedly mounted on the inner cavity side wall of the pressing portion (13), and a slide groove (15) is provided on the outer side of the conductive plate (11). The slide groove (15) and the support block (14) are mounted together, and the slide groove (15) can slide on the outer side of the support block (14).

5. The bulletproof plate forming equipment according to claim 4, characterized in that: The height of the pressing part (13) is greater than the depth of the placement groove, and a stop bar is fixedly installed at the top outer edge of the pressing part (13). When the pressing part (13) slides downward, the stop bar limits the pressing part (13) to prevent the pressing part (13) from falling from the placement groove.

6. The bulletproof plate forming equipment according to claim 5, characterized in that: The upper and lower adjacent support molds (10) are fitted together to provide side protection for the pressing of the pressing portion (13) and the bulletproof inserting plate.

7. The bulletproof plate forming equipment according to claim 1 or 3, characterized in that: A spring (7) is fixedly mounted on the bottom of the pressing platform (8), and during pressing, the spring (7) contacts the topmost supporting mold (10).

8. The bulletproof plate forming equipment according to claim 7, characterized in that: A guide column (12) is provided between the contact surfaces of adjacent supporting dies (10).

9. The bulletproof plate forming equipment according to claim 1, characterized in that: The hydraulic bladder (9) is a hollow structure of a rectangular parallelepiped structure, the side wall of which includes an inner core woven from metal wires, and a rubber layer is pressed onto the outer side of the inner core; the interior of the hydraulic bladder (9) is filled with liquid for transmitting pressure.

Images