Aluminum foil meal box forming die

Abstract

The utility model discloses an aluminum foil meal box forming die, which relates to the technical field of aluminum foil meal box processing and comprises a punch forming mechanism, the punch forming mechanism comprises a lower die plate and an upper die plate, and two groups of male die components are arranged on the lower die plate in a staggered manner and perpendicular to the feeding direction. The distance between every two adjacent male die assemblies in each set is the same as the width of the male die assemblies, female die assemblies driven by the upper die plate to ascend and descend are arranged over the male die assemblies, and the female die assemblies and the male die assemblies are matched to be used for punch forming of workpieces. The pre-cutting mechanism is located on the feeding side of the punch forming mechanism, the pre-cutting mechanism comprises a cutting table and a punching cutter which are symmetrically distributed on the two sides of the aluminum foil plate, and a punching hole matched with the punching cutter is formed in the cutting table; and the feeding mechanism is used for conveying the aluminum foil plate to the punch forming mechanism. The aluminum foil meal box forming die is high in aluminum foil plate utilization rate and good in forming quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminum foil meal box processing technical field, specifically is a kind of aluminum foil meal box forming die. BACKGROUND

[0002] The production of current aluminum foil meal box generally adopts stamping forming process, and a specific shape of meal box structure is formed by exerting pressure on aluminum foil plate by die. However, in the processing process of traditional stamping process, due to the limitation of die design and layout mode, a large amount of irregular mesh edge scraps are easily generated in the cutting area of aluminum foil plate, which leads to a significant reduction in raw material utilization. According to statistics, the utilization rate of aluminum foil under conventional stamping mode is less than 70%, which not only causes resource waste, but also increases the production cost and environmental protection pressure of enterprises.

[0003] In Chinese utility model patent application No. CN202410105664.8, a kind of aluminum foil container stamping die with less waste edge is disclosed. By cutting or cutting aluminum foil paper on both sides and bottom when cutting aluminum foil paper, the waste edge is reduced, and the material is better utilized. Although it can reduce waste to some extent, it cannot increase product quantity, reduce production cost and improve raw material utilization rate. In addition, the cutting of the scrap material can affect the next stamping process.

[0004] Therefore, it is necessary to provide an aluminum foil meal box forming die to solve the above problems. UTILITY MODEL CONTENT

[0005] (I) Technical problem solved

[0006] The utility model aims to provide an aluminum foil meal box forming die to solve the problems raised in the above background technology.

[0007] (II) Technical scheme

[0008] To achieve the above purpose, the utility model is implemented by the following technical scheme: an aluminum foil meal box forming die, comprising:

[0009] The stamping forming mechanism includes a lower die plate and an upper die plate, two groups of punch assemblies are staggered on the lower die plate perpendicular to the feeding direction, the distance between the two adjacent punch assemblies in each group is the same as the width of the punch assembly, a concave die assembly driven by the upper die plate is arranged above the punch assembly, and the concave die assembly cooperates with the punch assembly for workpiece stamping forming.

[0010] The pre-cutting mechanism is located on the feeding side of the stamping forming mechanism, and the pre-cutting mechanism includes cutting tables and punching knives symmetrically distributed on both sides of the aluminum foil plate, and the cutting tables are provided with punching holes matched with the punching knives.

[0011] Preferably, the upper die plate comprises a first upper die plate and a second upper die plate, and the die assembly above the two groups of punch assemblies is fixedly connected with the first upper die plate and the second upper die plate respectively.

[0012] Preferably, one side of the first upper die plate is fixedly connected with a tool holder driven to lift by a first air cylinder, and the punching cutter is fixedly connected with the tool holder.

[0013] Preferably, the punching hole is a through hole, and a material collecting groove is arranged below the punching hole.

[0014] Preferably, a punching table is fixedly connected to the lower die plate, and the table height of the cutting table is the same as the table height of the punching table.

[0015] Preferably, the punch assembly comprises a punch fixedly connected with the lower die plate, and a lower cutting cutter driven to lift by a third air cylinder is arranged on the outer side of the punch.

[0016] Preferably, the die assembly comprises an upper cutting cutter fixedly connected with the upper die plate, and a die driven to lift by a second air cylinder is slidably connected to the inner side of the upper cutting cutter.

[0017] Preferably, a hemming groove is arranged on the inner side edge of the upper cutting cutter and the lower cutting cutter.

[0018] Preferably, a discharging plate is sleeved on the outer side of the die assembly, and the discharging plate is slidably connected with the upper die plate.

[0019] (Three) beneficial effects

[0020] Compared with the prior art, the utility model provides a kind of aluminum foil lunch box forming die, with following beneficial effects:

[0021] The aluminum foil lunch box forming die, by setting two groups of punch assembly, die assembly is alternately stamped and processed, and the pitch of the two adjacent punch assemblies in each group is equal to the width of the punch assembly, so as to reduce the size of the corner material, improve the utilization rate of aluminum foil plate;In addition, the small piece of corner material is pre-punched by punching cutter, to avoid the accumulation of broken material on the punching table, and affect the forming effect of lunch box. DRAWINGS

[0022] Figure 1 It is the front view schematic diagram of the utility model structure;

[0023] Figure 2 It is the top view schematic diagram of the utility model punch assembly;

[0024] Figure 3 It is the bottom view schematic diagram of the utility model die assembly;

[0025] Figure 4 It is the aluminum foil plate punching schematic diagram of the utility model;

[0026] Figure 5 It is cross section schematic view of the male die assembly and the female die assembly.

[0027] In the figure: 1, cutting table; 2, male die assembly; 3, stamping table; 4, punching hole; 5, first upper die plate; 6, punching cutter; 7, second upper die plate; 8, female die assembly; 9, unloading plate; 10, roller feeder; 11, first air cylinder; 12, cutter holder; 13, lower die plate; 14, upper cutter; 15, lower cutter; 16, second air cylinder; 17, female die; 18, flanging groove; 19, male die; 20, third air cylinder. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0029] Please refer to Figures 1-5 As shown in the figure, an aluminum foil lunch box forming die comprises a punch forming mechanism: the punch forming mechanism comprises a lower die plate 13 and an upper die plate, two groups of male die assemblies 2 are vertically staggered on the lower die plate 13 in the feeding direction, the spacing between the adjacent two male die assemblies 2 in each group is the same as the width of the male die assembly 2, the upper part of the male die assembly 2 is provided with a female die assembly 8 driven to rise and fall by the upper die plate, and the female die assembly 8 is matched with the male die assembly 2 to be used for workpiece punch forming; a pre-cutting mechanism: the pre-cutting mechanism is located on the feeding side of the punch forming mechanism, the pre-cutting mechanism comprises cutting tables 1 and punching cutters 6 symmetrically distributed on both sides of the aluminum foil plate, and the cutting table 1 is provided with punching holes 4 matched with the punching cutter 6. The aluminum foil plate is conveyed to the punch forming mechanism by a feeding mechanism. Specifically, the feeding mechanism is a roller feeder 10.

[0030] When the lunch box is processed, the feeding mechanism is used for feeding, when the aluminum foil plate passes through the cutting table 1, the edge scrap of the aluminum foil plate is pre-punched by the punching cutter 6; then the feeding mechanism continues to feed, aligns the pre-punching hole at the front end of the aluminum foil plate with the edge of a group of male die assemblies 2, then drives the female die assembly 8 above the group of male die assemblies 2 to descend and punch the aluminum foil plate, after the group of male die assemblies 2 is punched, the pre-punching hole at the front end of the aluminum foil plate is aligned with the edge of another group of male die assemblies 2, then the female die assembly 8 above the group of male die assemblies 2 is driven to descend and punch the aluminum foil plate. The cycle is repeated.

[0031] Two groups of male die assemblies 2 and female die assemblies 8 are arranged to alternately punch, and the spacing between the adjacent two male die assemblies 2 in each group is equal to the width of the male die assembly 2, so as to reduce the size of the edge scrap; in addition, the small edge scrap is pre-punched by the punching cutter 6, so as to avoid that the scraps are accumulated on the stamping table 3 and affect the forming of the lunch box.

[0032] It should be noted that, in order to maintain the quality of the forming, should avoid the forming cavity communication. Thus will lead to two groups of punch assembly 2 spacing H is greater than the spacing L of the two groups of die cutting site on the aluminum foil plate. Therefore, in the alternating processing by two groups of punch assembly 2, recessed die assembly 8, need to adjust the rotation direction of the roller feeding machine 10, the control of the aluminum foil plate forward or backward, to make the pre punch hole and the edge of the punch assembly 2 alignment.

[0033] Specifically, the upper die plate includes a first upper die plate 5 and a second upper die plate 7, and the recessed die assembly 8 above the two groups of punch assembly 2 is fixedly connected with the first upper die plate 5 and the second upper die plate 7 respectively. The first upper die plate 5 and the second upper die plate 7 are driven to rise and fall by independent driving mechanisms.

[0034] In order to reduce the number of driving mechanisms, the first upper die plate 5 is fixedly connected with a tool holder 12 driven to rise and fall by a first cylinder 11, and the die cutting knife 6 is fixedly connected with the tool holder 12. When pre punching, the tool holder 12 is driven by the first cylinder 11 to descend to the limit position; when the first upper die plate 5 descends, the die cutting knife 6 cooperates with the die cutting hole 4 to perform the die cutting work.

[0035] In order to facilitate the collection of waste, the die cutting hole 4 is a through hole, and a material collecting groove is arranged below the die cutting hole 4.

[0036] In order to support the aluminum foil plate and avoid its sagging and deformation, affecting the forming quality of the lunch box, a stamping table 3 is fixedly connected to the lower die plate 13, and the height of the table surface of the cutting table 1 is the same as the height of the table surface of the stamping table 3.

[0037] In some embodiments, the punch assembly 2 includes a punch 19 fixedly connected with the lower die plate 13, and a lower cutting knife 15 driven to rise and fall by a third cylinder 20 is arranged on the outer side of the punch 19; the recessed die assembly 8 includes an upper cutting knife 14 fixedly connected with the upper die plate, and a recessed die 17 driven to rise and fall by a second cylinder 16 is slidably connected to the inner side of the upper cutting knife 14; the inner side edges of the upper cutting knife 14 and the lower cutting knife 15 are both provided with a curling groove 18.

[0038] When stamping, the recessed die assembly 8 is driven by the upper die plate to descend, the aluminum foil plate is die cut under the action of the upper cutting knife 14 and the lower cutting knife 15, the aluminum foil plate is gathered to the middle and is pressed to form under the action of the recessed die 17 and the punch 19, at this time, the upper die plate descends to the limit position, and the edge of the aluminum foil plate moves into the curling groove 18; then the upper die plate ascends, the third cylinder 20 drives the upper cutting knife 14 and the lower cutting knife 15 to ascend synchronously, the recessed die 17 continues to press the aluminum foil lunch box under the action of the second cylinder 16, the edge of the aluminum foil plate curls and forms a curled edge under the action of the curling groove 18; then the upper die plate ascends until the recessed die 17 is away from the punch 19, that is, the pressing and forming of the aluminum foil lunch box is completed.

[0039] In order to avoid that the aluminum foil plate follows the upward movement of the concave die assembly 8, the outer side of the concave die assembly 8 is sleeved with a stripper plate 9, which is in sliding connection with the upper die plate. Under the limiting of the stripper plate 9, the edge of the aluminum foil plate is prevented from being clamped on the outer side of the concave die assembly 8.

[0040] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An aluminum foil lunch box forming mold characterized by comprising: The utility model relates to a stamping forming mechanism, pre-cutting mechanism and cutting mechanism. The stamping forming mechanism comprises a lower die plate (13) and an upper die plate, two groups of punch assemblies (2) are staggered on the lower die plate (13) perpendicularly to the feeding direction, the distance between two adjacent punch assemblies (2) in each group is the same as the width of the punch assembly (2), a concave die assembly (8) driven by the upper die plate is arranged above each punch assembly (2), and the concave die assembly (8) is matched with the punch assembly (2) to be used for workpiece stamping forming. The pre-cutting mechanism is located on the feeding side of the stamping forming mechanism, and the pre-cutting mechanism comprises cutting tables (1) and punching knives (6) symmetrically arranged on both sides of the aluminum foil plate.

2. The aluminum foil lunch box forming mold according to claim 1, characterized by: The upper die plate comprises a first upper die plate (5) and a second upper die plate (7), and the concave die assemblies (8) above the two groups of punch assemblies (2) are fixedly connected with the first upper die plate (5) and the second upper die plate (7) respectively.

3. The aluminum foil lunch box forming mold according to claim 2, characterized by: One side of the first upper die plate (5) is fixedly connected with a tool holder (12) driven by a first air cylinder (11) to ascend and descend, and the punching knife (6) is fixedly connected with the tool holder (12).

4. The aluminum foil lunch box forming mold according to claim 1, characterized by: The punching hole (4) is a through hole, and a material collecting groove is arranged below the punching hole (4).

5. The aluminum foil lunch box forming mold according to claim 1, characterized by: The lower die plate (13) is fixedly connected with a stamping table (3), and the table height of the cutting table (1) is the same as the table height of the stamping table (3).

6. The aluminum foil lunch box forming mold according to claim 1, characterized by: The punch assembly (2) comprises a punch (19) fixedly connected with the lower die plate (13), and the outer side of the punch (19) is provided with a lower cutting knife (15) driven by a third air cylinder (20) to ascend and descend.

7. The aluminum foil lunch box forming mold according to claim 1, characterized by: The concave die assembly (8) comprises an upper cutting knife (14) fixedly connected with the upper die plate, and the inner side of the upper cutting knife (14) is slidably connected with a concave die (17) driven by a second air cylinder (16) to ascend and descend.

8. The aluminum foil lunch box forming mold according to claim 7, characterized by: The inner side edges of the upper cutting knife (14) and the lower cutting knife (15) are provided with curling grooves (18).

9. The aluminum foil lunch box forming mold according to claim 1, characterized by: The outer side of the concave die assembly (8) is sleeved with a discharging plate (9), and the discharging plate (9) is slidably connected with the upper die plate.

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