A punch die for making a high flat heat-seal edge aluminum foil container

Abstract

A punch die for making high flat heat-sealed edge aluminum foil container comprises a lower die assembly and an upper die assembly. The lower die assembly comprises a male die. The upper die assembly comprises an upper die plate, an upper cylinder seat, an upper inner ring, an upper base, a piston, a pressing plate and a female die. The outer side wall of the upper inner ring is in contact with the inner side wall of the upper shear seat. The output end of the piston is movably arranged through the upper base and connected with the pressing plate. The inner side wall of the pressing plate is in contact with the outer side wall of the female die and the male die and can press the side of the gap between the female die and the male die under the driving of the piston, so that the pressing plate first presses the four edges of the aluminum foil paper downward before the female die and the male die are contacted and closed, and the aluminum foil paper is pressed. During the forming, the pressing plate will flatten the aluminum foil paper passing through the shrinkage process, thereby having high flatness.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stacking material shaping device, in particular to a stamping die for manufacturing high-flat heat-sealed edge aluminum foil container. BACKGROUND

[0002] Aluminum foil containers include aluminum foil lunch boxes, which are widely used because of their light weight, moisture corrosion resistance, long shelf life, and ability to better maintain food freshness and lock in the original deliciousness of the food. During the processing of aluminum foil lunch boxes, stamping forming of the aluminum foil lunch boxes is required.

[0003] The stamping forming device in the prior art mainly consists of an upper die, a lower die, and a hydraulic (or pneumatic) lifting component. During use, the aluminum foil plate is placed between the upper die and the lower die, and then the hydraulic (or pneumatic) lifting component drives the upper die to descend and combine with the lower die, thereby forming the aluminum foil lunch box. For example, a rapid forming die for aluminum foil lunch boxes disclosed in patent No. CN202121026828.6 works by placing the aluminum foil sheets successively above the first lower die and below the second upper die on the placement plate, operating the hydraulic cylinder, and lifting the support plate along with the second lower die. The aluminum foil sheets on the placement plate are formed by the cooperation of the second lower die and the second upper die. However, during stamping, the originally flat aluminum foil paper will bulge under the action of the die and cause the aluminum foil paper around it to shrink, resulting in wrinkles on the four edges of the aluminum foil container and affecting product quality. SUMMARY

[0004] Therefore, the present application provides a stamping die for manufacturing high-flat heat-sealed edge aluminum foil container to solve the above technical problems.

[0005] A stamping die for manufacturing high-flat heat-sealed edge aluminum foil container, which comprises a lower die assembly and an upper die assembly cooperating with the lower die assembly. The lower die assembly comprises a male die, and the upper die assembly comprises an upper die plate, an upper cylinder seat arranged on the upper die plate, an upper inner ring arranged on the upper cylinder seat, an upper base arranged on the upper die plate, four pistons arranged on the upper cylinder seat, a pressure plate arranged on the pistons, and a female die arranged on the upper base. The outer side wall of the upper inner ring is in contact with the inner side wall of the upper shear seat, and the output end of the piston is movably arranged through the upper base and connected with the pressure plate. The pressure plate has a ring structure, the inner side wall of the pressure plate is in contact with the outer side walls of the female die and the male die, and can press the gap side between the female die and the male die under the driving of the pistons to press the aluminum foil paper.

[0006] Further, the lower die assembly further comprises a lower die plate, a blank holder seat arranged on the lower die plate, a blank holder arranged on the blank holder seat, a lower inner ring arranged in the blank holder, a lower shear seat arranged on the lower die plate, and a first driving cylinder arranged on the lower die plate. The first driving cylinder is arranged on the bottom surface of the lower die plate, and the output end of the first driving cylinder is connected with the blank holder seat through the lower die plate.

[0007] Further, the center of the blank holder seat is provided with a through hole for arranging the male die, the blank holder is coaxially arranged with the through hole and has a ring structure, one end of the male die is arranged on the lower die plate through the through hole, and the other end is provided with a forming part.

[0008] Further, a first flanging groove is arranged on the inner side wall of the blank holder, the cross section of the first flanging groove has a semicircular structure, and the first flanging groove is located at the end of the blank holder facing the upper die assembly.

[0009] Further, the center of the blank holder seat is provided with a through hole for arranging the male die, the blank holder is coaxially arranged with the through hole and has a ring structure, one end of the male die is arranged on the lower die plate through the through hole, and the other end is provided with a forming part.

[0010] Further, the stamping die for manufacturing high-flat heat-sealed edge aluminum foil container further comprises four guide shafts arranged on the lower die assembly, one end of each guide shaft is arranged on the lower die assembly, and the other end is arranged on the upper die assembly.

[0011] Further, the upper die assembly comprises a second driving cylinder arranged on the upper die plate, an upper cylinder seat arranged on the upper die plate, an upper shear seat arranged on the upper cylinder seat, and an embossing plate arranged on the second driving cylinder. The second driving cylinder is located at the center of the upper die plate, and the output end of the second driving cylinder is connected with the embossing plate through the upper die plate and the upper base.

[0012] Further, the upper shear seat has a ring structure, and a blade is arranged on the outer side wall of the end of the upper shear seat close to the lower die assembly.

[0013] Further, one end of the upper inner ring is connected with the upper cylinder seat, the other end is flush with the upper shear seat, the outer side wall of the upper inner ring is attached to the inner side wall of the upper shear seat, and a second flanging groove is arranged on the inner side wall of the end of the upper inner ring close to the lower die assembly, and the cross section of the second flanging groove has an arc shape.

[0014] Compared with existing technologies, the stamping die for manufacturing high-flatness heat-sealed aluminum foil containers provided by this invention features an inner wall of the pressure plate that fits against the outer walls of the concave and convex dies, and a piston that can independently move the pressure plate up and down. This allows the pressure plate to press against the gap between the concave and convex dies before they come into contact and close, thus bending the four sides of the aluminum foil downwards to hold it in place. During the aluminum foil's bulging and forming process, the pressure plate flattens the foil as it shrinks, resulting in high flatness. Furthermore, the end of the pressure plate facing the lower die assembly has an arc-shaped structure, preventing scratches from forming on the aluminum foil during shrinkage and ensuring a smooth surface. Attached Figure Description

[0015] Figure 1 This invention provides a schematic diagram of the structure of a stamping die for manufacturing high-flatness heat-sealed aluminum foil containers.

[0016] Figure 2 for Figure 1 An exploded view of the stamping die used to manufacture high-flatness heat-sealed aluminum foil containers.

[0017] Figure 3 for Figure 1 An exploded view of the lower die assembly of a stamping die for making high-flatness heat-sealed aluminum foil containers.

[0018] Figure 4 for Figure 1 A cross-sectional view of the lower die assembly of a stamping die for making a high-flatness heat-sealed aluminum foil container.

[0019] Figure 5 for Figure 1 An exploded view of the upper mold assembly of the stamping die used to manufacture high-flatness heat-sealed aluminum foil containers.

[0020] Figure 6 for Figure 1 A cross-sectional view of the lower die assembly of a stamping die for making a high-flatness heat-sealed aluminum foil container.

[0021] Figure 7 for Figure 1 A cross-sectional view of a stamping die for making high-flatness heat-sealed aluminum foil containers.

[0022] Figure 8 for Figure 7 A schematic diagram of the structure of the stamping die at point A for making a high-flatness heat-sealed aluminum foil container. Detailed Implementation

[0023] The following provides a more detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0024] As Figures 1 to 8 shown in the structural schematic diagram of the stamping die for manufacturing the high flat heat-sealed edge aluminum foil container provided by the present application. The stamping die for manufacturing the high flat heat-sealed edge aluminum foil container comprises a lower die assembly 10, four guide shafts 20 arranged on the lower die assembly 10, and an upper die assembly 30 matched with the lower die assembly 10. It is conceivable that the stamping die for manufacturing the high flat heat-sealed edge aluminum foil container also comprises other functional modules, such as an assembly assembly, an installation assembly, and the like, which are known to those skilled in the art and will not be described here in detail.

[0025] The lower die assembly 10 comprises a lower die plate 11, a pressure ring seat 12 arranged on the lower die plate 11, a pressure ring 13 arranged on the pressure ring seat 12, a lower inner ring 14 arranged in the pressure ring 13, a male die 15 arranged in the lower inner ring 13, a lower shearing seat 16 arranged on the lower die plate 11, and a first driving air cylinder 17 arranged on the lower die plate 11.

[0026] The lower die plate 11 is used to bear the above-mentioned various functional modules, so the lower die plate 11 is provided with various functional structures, such as screws, bolts, through holes and the like, to complete the installation and assembly of the above-mentioned functional modules, which can be arranged according to actual needs and will not be described in detail here. The four corners of the lower die plate 11 are provided with the guide shafts 20.

[0027] The center of the pressure ring seat 12 is provided with a through hole 121 for arranging the male die 15. The pressure ring seat 12 moves up and down under the action of the first driving air cylinder 17, thereby driving the pressure ring 13 to move up and down.

[0028] The pressure ring 13 is coaxially arranged with the through hole 121 and has a ring structure, and a first flanging groove 131 is arranged on the inner side wall of the pressure ring 13. The first flanging groove 131 has a semicircular structure in cross section, and the first flanging groove 131 is located at one end of the pressure ring 13 facing the upper die assembly 30. The first flanging groove 131 is used to flange the aluminum foil paper by moving during stamping, and the specific description will be given below in combination with the upper die assembly 30.

[0029] The lower inner ring 14 is located between the male die 15 and the pressure ring 13, the inner side wall of the lower inner ring 14 is fitted with the outer side wall of the male die 15, and the outer side wall of the lower inner ring 14 is fitted with the inner side wall of the pressure ring 13. The lower inner ring 14 is used to clamp the aluminum foil paper in cooperation with the upper die assembly 30.

[0030] The punch 15 is arranged on the lower die plate 11 through the through hole 121, and a forming part 151 is arranged at the other end of the punch 15. The forming part 151 has the same shape as that of the aluminum foil container to be punched, and the shape of the forming part 151 can be arranged according to actual needs.

[0031] A lower shearing hole 161 is arranged in the center of the lower shearing seat 16. A blade is arranged on the inner side wall of the lower shearing hole 161. After the upper die assembly 30 is lowered and the mold is closed, the lower shearing hole 161 and the blade can be interlaced with each other to cut the aluminum foil into the shape of the lower shearing hole 161. The height of the lower shearing hole 161 is greater than the top end of the forming part 151, so that the aluminum foil is first cut into the shape of the lower shearing hole 161, and then the forming part 151 is contacted, thereby ensuring the flatness of the aluminum foil.

[0032] The first driving cylinder 17 is arranged on the bottom surface of the lower die plate 11. The output end of the first driving cylinder 17 is connected with the pressure ring seat 12 through the lower die plate 11, so that the pressure ring seat 12 and the pressure ring 13 can be driven to move up and down, so that the first flanging groove 131 moves up and down along the outer side wall of the lower inner ring 14, and the aluminum foil is flanged.

[0033] The guide shaft 20 is arranged at one end on the lower die assembly 10 and at the other end on the upper die assembly 30. The guide shaft 20 plays a guiding role when the mold is closed and opened, and ensures the stability of movement.

[0034] The upper die assembly 30 comprises an upper die plate 31, a second driving cylinder 32 arranged on the upper die plate 31, an upper cylinder seat 33 arranged on the upper die plate 31, an upper shearing seat 34 arranged on the upper cylinder seat 33, an upper inner ring 35 arranged on the upper cylinder seat 33, an upper base 36 arranged on the upper die plate 31, four pistons 37 arranged on the upper cylinder seat 33, a pressing plate 38 arranged on the pistons 37, a concave die 39 arranged on the upper base 36, and an embossing plate 310 arranged on the second driving cylinder 32.

[0035] The end surface of the upper die plate 31 facing the lower die assembly 10 is used to arrange the upper cylinder seat 33, and the other end surface is used to arrange the second driving cylinder 32.

[0036] The second driving cylinder 32 is located at the center of the upper die plate 31 and the output end of the second driving cylinder 32 is connected with the embossing plate 310 through the upper die plate 31 and the upper base 36. The second driving cylinder 32 is used to drive the embossing plate 310 to move. After the punching is completed, the embossing plate 310 is pushed, so that the aluminum foil container originally adhered in the concave die 39 falls under the pushing of the embossing plate 310, thereby facilitating the discharging.

[0037] The upper cylinder seat 33 is hollow in the center and has multiple limiting grooves on the inner wall for limiting the upper base 36 and the upper inner ring 35. The top surface of the upper cylinder seat 33 is used to connect with the upper die plate 31, and the bottom surface is used to set the upper shear seat 34 through fasteners.

[0038] The upper shear seat 34 is in a ring structure, and the diameter of the upper shear seat 34 is the same as that of the lower shear groove 161. The outer wall of the upper shear seat 34 near one end of the lower die assembly 10 is provided with a cutting edge, so as to stagger cutting with the lower shear groove 161 when the mold is closed.

[0039] One end of the upper inner ring 35 is connected with the upper cylinder seat 33, and the other end is flush with the upper shear seat 34, so as to be able to fit with one end of the blank holder 13 when the mold is closed, thereby ensuring flatness. The outer wall of the upper inner ring 35 fits with the inner wall of the upper shear seat 34. The inner wall of the upper inner ring 35 near one end of the lower die assembly 30 is provided with a second curling groove 351. The cross section of the second curling groove 351 is arc-shaped and fits with one end of the first curling groove 131. The curling groove is also provided at the upper inner ring 35, so that when the first curling groove 131 moves along the outer wall of the lower inner ring 14, the curved aluminum foil can also diffract the surface of the second curling groove 351 to further bend, thereby improving the smoothness of curling.

[0040] The upper base 36 is located between the second driving cylinder 32 and the embossing plate 310. The output end of the second driving cylinder 32 movably penetrates through the upper base 36 and is connected with the embossing plate 310. The upper base 36 serves to limit the embossing plate 310 and is also used to set the female die 39.

[0041] The piston 37 is arranged in a circumferential arrangement on the upper die plate 31 and is connected with the pressing plate 38 through the upper base 36. The piston 37 is used to separately drive the pressing plate 38 to move up and down.

[0042] The pressing plate 38 is in annular structure, the inner side wall of the pressing plate 38 is in close contact with the outer side wall of the female die 39 and the male die 15, and can be driven by the piston 37 to press the gap side between the female die 39 and the male die 15 before the female die 39 and the male die 15 are contacted and closed, so as to bend the four edges of the aluminum foil paper downward and press the aluminum foil paper. When the female die 39 and the male die 15 are closed to stamp the aluminum foil paper, the originally flat aluminum foil paper is raised and shrunk by the extrusion of the female die 39 and the male die 15, and since the aluminum foil paper around is pressed, the pressing plate 38 can flatten the aluminum foil paper passing during the shrinking process, so as to have high flatness. The one end of the pressing plate 38 towards the lower die assembly 10 is in circular arc structure, so that the aluminum foil paper is not scratched when being pressed and shrunk, and the flatness is ensured.

[0043] The female die 39 is coaxially arranged with the male die 15 and the shape is matched with the forming part 151, so as to die cast the shape of the required aluminum foil container.

[0044] The embossing plate 310 is arranged in the female die 39, the embossing plate 310 is connected with the output end of the second driving cylinder 32, and the embossing plate 310 is provided with the required pattern of the aluminum foil container bottom on one end face towards the lower die assembly 10, so as to form the pattern on the aluminum foil container bottom when being stamped.

[0045] Compared with the prior art, the stamping die for manufacturing high flatness heat sealing edge aluminum foil container provided by the application can make the inner side wall of the pressing plate 38 in close contact with the outer side wall of the female die 39 and the male die 15, and the piston 37 can drive the pressing plate 38 to move up and down independently, so that the pressing plate 38 can press the gap side between the female die 39 and the male die 15 before the female die 39 and the male die 15 are contacted and closed, so as to bend the four edges of the aluminum foil paper downward and press the aluminum foil paper. When the aluminum foil paper is raised and formed, the pressing plate 38 can flatten the aluminum foil paper passing during the shrinking process, so as to have high flatness. Meanwhile, the one end of the pressing plate 38 towards the lower die assembly 10 is in circular arc structure, so that the aluminum foil paper is not scratched when being pressed and shrunk, and the flatness is ensured.

[0046] The above is only the preferred embodiment of the application, and is not used to limit the protection scope of the application, any modification, equivalent replacement or improvement within the spirit of the application is covered in the claim scope of the application.

Claims

1. A punch die for making a high flat heat-sealable aluminium foil container, characterised in that: The punch die for manufacturing high flat heat sealing edge aluminum foil container comprises a lower die assembly and an upper die assembly matched with the lower die assembly, the lower die assembly comprises a punch, a lower die plate, a binder ring seat arranged on the lower die plate, a binder ring arranged on the binder ring seat, a lower inner ring arranged in the binder ring, a lower shearing seat arranged on the lower die plate and a first driving cylinder arranged on the lower die plate, the first driving cylinder is arranged on the bottom surface of the lower die plate, the output end of the first driving cylinder is connected with the binder ring seat through the lower die plate, the binder ring seat moves up and down under the action of the first driving cylinder, thereby driving the binder ring to move up and down, the lower inner ring is located between the punch and the binder ring, the inner side wall of the lower inner ring is matched with the outer side wall of the punch, and the outer side wall of the lower inner ring is matched with the inner side wall of the binder ring, the upper die assembly comprises an upper die plate, an upper cylinder seat arranged on the upper die plate, an upper shearing seat arranged on the upper cylinder seat, an upper inner ring arranged on the upper cylinder seat, an upper base arranged on the upper die plate, four pistons arranged on the upper cylinder seat, a pressing plate arranged on the pistons and a concave die arranged on the upper base, the outer side wall of the upper inner ring is matched with the inner side wall of the upper shearing seat, the output end of the piston is movably connected with the pressing plate through the upper base, the pressing plate has a ring structure, the inner side wall of the pressing plate is matched with the outer side walls of the concave die and the lower inner ring, and the pressing plate can press the gap side between the concave die and the lower inner ring before the concave die and the punch contact and close under the driving of the piston, so that the four edges of the aluminum foil paper are bent downward and flattened.

2. The stamping die for making a high-flat heat-sealable aluminum foil container according to claim 1, wherein: The center of the binder ring seat is provided with a through hole for arranging the punch, the binder ring is coaxially arranged with the through hole and has a ring structure, one end of the punch is arranged on the lower die plate through the through hole, and the other end of the punch is provided with a forming part.

3. The stamping die for making a high-flat heat-sealable aluminum foil container according to claim 1, wherein: A first edge rolling groove is arranged on the inner side wall of the binder ring, the first edge rolling groove has a semicircular structure in cross section, and the first edge rolling groove is located at one end of the binder ring facing the upper die assembly.

4. The stamping die for making a high-flat-seamed aluminum foil container of claim 1, wherein: A lower shearing hole is arranged in the center of the lower shearing seat, and a blade is arranged on the inner side wall of the lower shearing hole.

5. The stamping die for making a high-flat-seamed aluminum foil container of claim 1, wherein: The punch die for manufacturing high flat heat sealing edge aluminum foil container further comprises four guide shafts arranged on the lower die assembly, one end of each guide shaft is arranged on the lower die assembly, and the other end of each guide shaft is arranged on the upper die assembly.

6. The stamping die for making a high-flat-seamed-edge aluminum foil container of claim 1, wherein: The upper die assembly comprises a second driving cylinder arranged on the upper die plate and an embossing plate arranged on the second driving cylinder, the second driving cylinder is located at the center of the upper die plate and the output end of the second driving cylinder is connected with the embossing plate through the upper die plate and the upper base.

7. The stamping die for making a high-flat-seamed aluminum foil container of claim 1, wherein: The upper shearing seat has a ring structure, and a blade is arranged on the outer side wall of one end of the upper shearing seat close to the lower die assembly.

8. The stamping die for making a high-flat-seamed-edge aluminum foil container of claim 1, wherein: The upper inner ring is connected with the upper cylinder seat at one end and is flush with the upper shearing seat at the other end, the outer side wall of the upper inner ring is attached to the inner side wall of the upper shearing seat, and a second flanging groove is arranged on the inner side wall of the end of the upper inner ring close to the lower die assembly.

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