A one-step trimming press die

Abstract

A one-time forming and trimming stamping die comprises an upper die plate, a lower die plate, two upper die sets and two lower die sets. The upper die set comprises a die mounting block, a piston, a limiting plate, a female die and an upper shearing plate. The lower die set comprises a lower base, a male die, a lower cylinder, a blank holder seat, a blank holder and a lower inner ring. The edge of the female die has an upper flat part, and the edge of the lower base has a lower flat part. The one-time forming and trimming stamping die forms a flat flange of an aluminum foil container by pressing an aluminum foil between the upper flat part and the lower flat part, and produces various aluminum foil containers according to the shape of the female die and the male die, such as a heart, an egg and a small animal. The clamping surface between the upper shearing plate and the blank holder passes through the clamping surface between the upper flat part and the lower flat part, so as to complete the one-time shearing operation on the burr and the sharp thorn at the flange position of the aluminum foil container, thereby ensuring the neatness and smoothness of the edge of the aluminum foil container.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a one-time forming edge-trimming stamping die. Background Technology

[0002] Traditional aluminum foil containers are edged using methods such as curling or folding, which protects consumer safety and enhances the overall strength of the container. Aluminum foil containers typically use aluminum bottle caps, plastic caps, or paper caps to cover the container opening. For example, Chinese patent CN202120235221.2 discloses a stamping die for an aluminum foil container with a reverse-curled edge structure. This die includes a base, a shaping mold fixedly connected to one edge of the top of the base, a main cavity at the center of the top of the shaping mold, and a reverse-curled edge cavity at the top edge of the shaping mold near the main cavity. A first support frame is provided on the top side of the base corresponding to one side of the shaping mold, and a forming head is fixedly connected to the center of the bottom of the first support frame. This stamping die curls the aluminum foil container using the reverse-curled edge cavity; however, two aluminum foil containers in this state cannot be joined together to form a single container, failing to meet market demands. Furthermore, without the edge-rolling operation, the burrs on the edges of the aluminum foil are not effectively removed after it is cut using traditional aluminum foil stamping dies. Utility Model Content

[0003] In view of this, the present invention provides a one-time forming edge-cutting stamping die to solve the above problems.

[0004] A one-piece forming trimming stamping die includes an upper die plate, a lower die plate disposed on one side of the upper die plate, at least two upper die assemblies disposed on the upper die plate, and at least two lower die assemblies disposed on the lower die plate and corresponding to two of the upper die assemblies respectively. Each upper die assembly includes a mounting module fixedly disposed on the upper die plate, a piston movably disposed on the side of the mounting module facing the lower die plate, a limiting plate movably disposed on one side of the piston, a die fixedly disposed on one side of the limiting plate, and an upper shearing plate fixedly disposed on the side of the upper die plate facing the lower die plate. Each lower die assembly includes a lower base disposed on the lower die plate, a punch disposed on the lower base, at least two lower cylinders disposed on both sides of the lower base, a blank holder disposed at the output end of the lower cylinder, a blank holder fixedly disposed on the blank holder, and a lower inner ring sleeved on the lower base. The edge of the die cavity has an upper flat portion, and the lower inner ring has a lower flat portion on the side away from the lower template, which corresponds to the upper flat portion. The end face of the pressure ring corresponds to and matches the end face of the upper shearing plate, and the clamping surface between the upper shearing plate and the pressure ring passes through the clamping surface between the upper flat portion and the lower flat portion.

[0005] Furthermore, the upper template is movably fitted onto at least four guide posts, and the guide posts are fixedly mounted on the lower template.

[0006] Furthermore, at least four limiting posts are movably inserted on the side of the upper template facing the lower template, and a pressure plate is fixedly installed at the end of each limiting post.

[0007] Furthermore, a lower shearing plate is fixedly provided on the side of the lower template facing the upper template, and the lower shearing plate has a lower shearing opening.

[0008] Furthermore, the cross-sectional area of ​​the limiting plate is larger than the circumferential cross-sectional area of ​​the die, and its edge protrudes from the die. The inner wall of the upper shearing plate has a first step.

[0009] Furthermore, both the limiting plate and the cavity mold have air passages, and the two are interconnected.

[0010] Furthermore, a second stepped portion is formed on the outer side wall of the lower base for securing the lower inner ring.

[0011] Furthermore, the pressure ring seat protrudes from the pressure ring in the direction of its axis.

[0012] Compared with existing technologies, the one-time forming edge-cutting stamping die provided by this utility model forms a flat flange of the aluminum foil container by pressing aluminum foil between the upper and lower flat surfaces. Thus, the two aluminum foil containers are mirror images of each other. After they are glued and sealed, various shapes of aluminum foil containers, such as hearts, eggs, and small animals, can be made according to the shapes of the concave and convex dies to meet the needs of different scenarios and consumers. After the stamping operation is completed, the upper shearing plate continues to press down under the push of the upper template, so that the clamping surface between the upper shearing plate and the pressing ring passes through the clamping surface between the upper and lower flat surfaces, completing a one-time punching operation to remove burrs and sharp edges at the flange position of the aluminum foil container, thereby ensuring the neat and smooth edges of the aluminum foil container. Attached Figure Description

[0013] Figure 1 A schematic diagram of the one-time forming edge-cutting stamping die provided by this utility model.

[0014] Figure 2 for Figure 1 A cross-sectional schematic diagram of a one-time forming edge-trimming stamping die.

[0015] Figure 3 for Figure 1 A schematic diagram of the cross-section of the upper die assembly of a one-time forming trimming stamping die.

[0016] Figure 4 for Figure 1 A schematic diagram of the cross-section of the lower die assembly of a one-time forming trimming stamping die.

[0017] Figure 5 for Figure 1 A schematic diagram of the cross-section of a one-time forming edge-trimming stamping die after the stamping operation is completed.

[0018] Figure 6 for Figure 5 Enlarged diagram of point A in the middle. Detailed Implementation

[0019] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0020] like Figure 1The diagram shows the structure of the one-time forming trimming stamping die provided by this utility model. The one-time forming trimming stamping die includes an upper template 10, a lower template 20 disposed on one side of the upper template 10, at least two upper die assemblies 30 disposed on the upper template 10, and at least two lower die assemblies 40 disposed on the lower template 20 and corresponding to the two upper die assemblies 30 respectively. It is conceivable that the one-time forming trimming stamping die also includes other functional modules, such as a power module, a drive module, an air blowing module, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0021] Please refer to the following: Figures 2 to 6 At least two upper modules 30 are fixedly mounted on the upper template 10, and the upper template 10 is movably fitted onto at least four guide posts 11. The guide posts 11 are fixedly mounted on the lower template 20, and the upper template 10 is controlled by a drive module to reciprocate along the length direction of the guide posts 11, thereby driving the upper modules 30 to perform cutting operations.

[0022] At least four limiting posts 12 are movably inserted through the upper template 10 on the side facing the lower template 20. A pressure plate 13 is fixedly installed at the end of each limiting post 12 to press down the aluminum foil, thus facilitating the cutting operation. It is conceivable that the aluminum foil is transported by a paper feeding mechanism, a method that is existing technology and will not be described in detail here.

[0023] A lower shearing plate 21 is fixedly mounted on the side of the lower template 20 facing the upper template 10. This lower shearing plate 21 has a lower shearing opening, which cooperates with the upper module 30 to cut the aluminum foil. It is conceivable that the lower shearing plate 21 has a conveyor bar flush with the lower shearing opening to press the aluminum foil between the pressure plate 13 and the conveyor bar, thereby ensuring the flatness of the aluminum foil. One side of the lower shearing plate 21 also has an air blowing module for blowing air to remove waste residue.

[0024] The upper module 30 includes a mounting module 31 fixedly mounted on the upper template 10, a piston 32 movably mounted on the side of the mounting module 31 facing the lower template 20, a limiting plate 33 movably mounted on one side of the piston 32, a die 34 fixedly mounted on one side of the limiting plate 33, and an upper shearing plate 35 fixedly mounted on the side of the upper template 10 facing the lower template 20.

[0025] The upper template 10 has an opening corresponding to the position of the mounting module 31, which serves as the movement space for the piston 32. The mounting module 31 has an air hole for filling with high-pressure gas, so that the end face of the piston 32 can always abut against the surface of the limiting plate 33.

[0026] The cross-sectional area of ​​the limiting plate 33 is larger than the circumferential cross-sectional area of ​​the die 34, and its edge protrudes from the die 34. The inner sidewall of the upper shear plate 35 has a first step portion 36, so that the limiting plate 33 abuts against the first step portion 36 under the thrust of the piston 32.

[0027] Both the limiting plate 33 and the die 34 have air passages that are interconnected. The air passage in the die 34 is also connected to the stamping surface within the die 34. This allows air to be expelled from the die 34 during the stamping process, improving stamping quality. Furthermore, after the aluminum foil container is stamped, the die 34 is raised, and the aluminum foil container is pressed tightly against the stamping surface of the die 34. By introducing air into the air passages, the aluminum foil container can be quickly unloaded.

[0028] The edge of the concave mold 34 has a ring of upper flat surface 37, which is used to cooperate with the lower mold 40 to stamp the product into a shape with a flat flange around the perimeter. Thus, the flanges of the two products are mirror images of each other, and after they are glued together and sealed, they can form a whole. Therefore, by changing the shape of the concave mold 34, a variety of aluminum foil containers, such as hearts, eggs, and small animals, can be made. The sealing process after the flanges of the two aluminum foil containers are glued together is existing technology and will not be described in detail here. The specific cooperation between the upper flat surface 37 and the lower mold 40 will be explained below.

[0029] When the limiting plate 33 abuts against the first step portion 36, the plane of the upper flat portion 37 is flush with the plane of the end of the upper shearing plate 35 away from the upper template 10.

[0030] The upper shearing plate 35 has an upper shearing opening on its edge, which can cooperate with the lower shearing plate 21. During the pressing down of the upper module 30, the edge of the upper shearing plate 35 and the lower shearing plate 21 are interleaved to perform a shearing operation on the aluminum foil.

[0031] The lower module 40 includes a lower base 41 disposed on the lower template 20, a punch 42 disposed on the lower base 41, at least two lower cylinders 43 disposed on both sides of the lower base 41, a pressure ring seat 44 disposed at the output end of the lower cylinder 43, a pressure ring 45 fixedly disposed on the pressure ring seat 44, and a lower inner ring 46 sleeved on the lower base 41.

[0032] A second step 47 is provided on the outer side wall of the lower base 41. The second step 47 is used to lock the lower inner ring 46 to limit the movement of the lower inner ring 46, thereby performing the edge cutting operation.

[0033] The punch 42 corresponds to the die 34, and can form different aluminum foil containers during the stamping operation according to the internal forming design.

[0034] The two lower cylinders 43 can drive the pressure ring seat 44 and cause the pressure ring 45 to reciprocate toward the upper template 10. The pressure ring seat 44 protrudes from the pressure ring 45 toward its axis, such that one side of the pressure ring seat 44 with the pressure ring 45 abuts against the end of the lower inner ring 46, thereby causing the lower inner ring 46 to move when the pressure ring seat 44 moves toward the upper template 10.

[0035] The end face of the pressure ring 45 corresponds to the end face of the upper shear plate 35 so as to perform the edge trimming operation after the stamping operation is completed.

[0036] The lower inner ring 46 has a lower flat portion 48 on the side away from the lower template 20. The lower flat portion 48 corresponds to the upper flat portion 37. When the aluminum foil is pressed in the die 34 and the punch 42, the surrounding area of ​​the aluminum foil is pressed by the upper flat portion 37 and the lower flat portion 48, thereby forming a flat flange on the aluminum foil container.

[0037] After the stamping operation of the aluminum foil is completed, the lower inner ring 46 abuts against the second step portion 47, and the upper shearing plate 35 continues to press down under the push of the upper template 10, so that the clamping surface between the upper shearing plate 35 and the pressing ring 44 passes through the clamping surface between the upper flat portion 37 and the lower flat portion 48, thereby punching the burrs and sharp points at the flange position of the aluminum foil container to ensure that the edge of the aluminum foil container is neat and smooth.

[0038] The stamping process of the one-time forming edge-cutting stamping die is described in detail below: First, the paper feeding mechanism conveys the aluminum foil to the lower shearing plate 21, and the upper template 10 moves downward under the control of the external drive module. As the upper module 30 follows the downward movement of the upper template 10, the pressure plate 13 first presses down on the aluminum foil, and then the upper shearing plate 35 and the lower shearing plate 21 interlock to cut the aluminum foil. Then, the edge of the cut aluminum foil is gently clamped by the upper shearing plate 35 and the edge-pressing ring 45 and continues to move downward. At this time, the lower cylinder 43 drives the edge-pressing ring 45 to move at the same speed as the upper template 10. During the downward movement of the aluminum foil, the periphery of the aluminum foil gradually shrinks, roughly forming the desired stamped product. The die 34 drives the lower inner ring 46 to move downward until the lower inner ring 46 is limited on the second step portion 47. At this time, the die 34 and the punch 42 are fully engaged, thereby completing the stamping operation of the aluminum foil container.

[0039] After the stamping operation is completed, the upper shearing plate 35 continues to press down under the push of the upper template 10, so that the clamping surface between the upper shearing plate 35 and the pressure ring 44 passes through the clamping surface between the upper flat part 37 and the lower flat part 48, thereby punching the burrs and sharp points at the flange position of the aluminum foil container. Finally, the upper template 10 and the pressure ring 44 are raised, and the pressure ring 44 is raised to be flush with the lower shearing plate 21. At this time, air is introduced into the air passage in the limiting plate 33, and the upper template 10 continues to rise to complete the unloading operation. Then the air blowing module blows air to blow out the detached aluminum foil container and the burrs and debris on the pressure ring 44, thereby completing the unloading operation, and then the production of the next aluminum foil container begins, and so on.

[0040] Compared with the prior art, the one-time forming edge-cutting stamping die provided by this utility model forms a flat flange of the aluminum foil container by pressing aluminum foil between the upper flat part 37 and the lower flat part 48. Thus, the two aluminum foil containers are mirror images of each other. After they are glued and sealed, various aluminum foil containers can be made according to the shapes of the concave die 34 and the convex die 42, such as hearts, eggs, and small animals, to meet the needs of different scenarios and consumers. After the stamping operation is completed, the upper shearing plate 35 continues to press down under the push of the upper template 10, so that the clamping surface between the upper shearing plate 35 and the pressing ring 44 passes through the clamping surface between the upper flat part 37 and the lower flat part 48, completing the one-time punching operation of the burrs and sharp points at the flange position of the aluminum foil container, thereby ensuring the neat and smooth edges of the aluminum foil container.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions or improvements within the spirit of the present utility model are covered within the scope of the claims of the present utility model.

Claims

1. A one-time forming edge-trimming stamping die, characterized in that: The one-time forming trimming stamping die includes an upper die plate, a lower die plate disposed on one side of the upper die plate, at least two upper die assemblies disposed on the upper die plate, and at least two lower die assemblies disposed on the lower die plate and corresponding to two of the upper die assemblies respectively. Each upper die assembly includes a mounting module fixedly disposed on the upper die plate, a piston movably disposed on the side of the mounting module facing the lower die plate, a limiting plate movably disposed on one side of the piston, a die fixedly disposed on one side of the limiting plate, and an upper shearing plate fixedly disposed on the side of the upper die plate facing the lower die plate. The lower die assembly includes a... The lower mold has a lower base, a punch on the lower base, at least two lower cylinders on both sides of the lower base, a pressure ring seat at the output end of the lower cylinder, a pressure ring fixedly mounted on the pressure ring seat, and a lower inner ring fitted on the lower base. The edge of the die has an upper flat portion, and the side of the lower inner ring away from the lower mold has a lower flat portion corresponding to the upper flat portion. The end face of the pressure ring corresponds to and matches the end face of the upper shearing plate. The clamping surface between the upper shearing plate and the pressure ring passes through the clamping surface between the upper flat portion and the lower flat portion.

2. The one-time forming trimming stamping die according to claim 1, characterized in that: The upper template is movably fitted onto at least four guide posts, and the guide posts are fixedly installed on the lower template.

3. The one-time forming trimming stamping die according to claim 1, characterized in that: At least four limiting posts are movably inserted on the side of the upper template facing the lower template, and a pressure plate is fixedly installed at the end of each limiting post.

4. The one-time forming trimming stamping die according to claim 1, characterized in that: A lower shearing plate is fixedly installed on the side of the lower template facing the upper template, and the lower shearing plate has a lower shearing opening.

5. The one-time forming trimming stamping die according to claim 1, characterized in that: The cross-sectional area of ​​the limiting plate is larger than the circumferential cross-sectional area of ​​the die, and its edge protrudes from the die. The inner sidewall of the upper shearing plate has a first step.

6. The one-time forming trimming stamping die according to claim 1, characterized in that: Both the limiting plate and the cavity mold have air passages, and the two are interconnected.

7. The one-time forming trimming stamping die according to claim 1, characterized in that: A second step is formed on the outer wall of the lower base to secure the lower inner ring.

8. The one-time forming trimming stamping die according to claim 1, characterized in that: The pressure ring seat protrudes from the pressure ring in the direction of its axis.

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