A new die process design structure of two-fold bending one-step forming

Abstract

This invention provides a novel mold process design structure for one-step double-bending forming. This mold design structure prevents material stretching and deformation during one-step forming. Because the material at the bending point is not compressed during stamping, it can freely warp and flow during bending, preventing stretching and deformation, and eliminating noticeable mold marks. This results in stable product dimensions. Using this mold for stable production significantly reduces mold development and debugging costs, as well as product manufacturing costs, thereby improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically providing a novel mold process design structure for one-step double bending. Background Technology

[0002] The traditional process of forming and bending with stamping dies involves designing contour modules for the upper and lower dies, and using punching force to press the raw material into the shape between the upper and lower dies, thereby achieving the product bending effect. In this embodiment, when the product is stamped, the existing technology involves bending in two steps: first forming the bending angle (1), and then forming the bending angle (2). This results in low production efficiency and requires the development of two sets of dies, which greatly increases the stamping production cost. Utility Model Content

[0003] The products involved in this utility model (such as...) Figure 1 As shown, in stamping, the existing technology involves bending in two steps: first forming the bending angle (1), then forming the bending angle (2). This results in low production efficiency and requires the development of two sets of molds, significantly increasing stamping production costs. To overcome the shortcomings of the existing technology, this utility model provides a novel mold process design structure for double bending in one step. The specific technical solution is as follows:

[0004] A novel die for double bending and one-step forming includes an upper die and a lower die. The upper die includes an upper die base, an upper pad, an upper clamping plate, and a stripper plate stacked sequentially, as well as guide pillars, equal-height sleeves, positioning pins, and springs built into the upper die. The lower die includes a lower pad and a lower die base stacked sequentially.

[0005] The mold also includes a double bending forming assembly, which includes a bending punch, an inner stripper plate of the upper mold, a bending male mold, an inner stripper plate of the lower mold, and a stripping device.

[0006] The upper die inner stripper plate is connected to the upper die via a spring; the bending punch is connected to the lower end face of the upper pad; the bending punch is positioned on the left and right sides of the upper die inner stripper plate and does not contact the left and right sides of the upper die inner stripper plate; the lower die inner support plate is connected to the lower die via a height-equalizing sleeve; the bending male die is positioned on the left and right sides of the lower die inner stripper plate and connected to the upper end face of the lower pad; the stripping assembly is disposed on the lower die;

[0007] The lower die inner stripper is provided with a boss, the horizontal length of which matches the length of the lower end face of the bending die; the height of the boss is less than the height of the bending die.

[0008] The height of the boss can be adjusted according to the height of the product to be formed;

[0009] The stripping device includes a striking rod, a lower striking plate, and elastic rubber; the upper end face of the lower striking plate is connected to the striking rod; the lower end of the striking rod is connected to the lower striking plate, and the upper end is connected to the stripping plate inside the lower mold; the elastic rubber is connected to the lower end face of the lower striking plate.

[0010] The number of striking rods can be 2 to 6;

[0011] The mold also includes a lower pad and a lower support plate, the lower end face of the lower mold base is connected to each other, and the lower end of the lower pad is connected to the upper end face of the lower support plate.

[0012] The urethane adhesive is disposed between the lower punch plate and the lower support plate; the upper end of the urethane adhesive is connected to the lower end face of the lower punch plate; and the lower end of the urethane adhesive is connected to the upper end face of the lower support plate.

[0013] Beneficial effects

[0014] This invention provides a novel mold process design structure for one-step double-bending forming. This mold design structure prevents material stretching and deformation during one-step forming. Because the material at the bending point is not compressed during stamping, it can freely warp and flow during bending, preventing stretching and deformation, and eliminating noticeable mold marks. This results in stable product dimensions. Using this mold for stable production significantly reduces mold development and debugging costs, as well as product manufacturing costs, thereby improving production efficiency. Attached Figure Description

[0015] Figure 1 A closed-mold schematic diagram of a novel mold process design structure for one-step double-bending forming provided by this utility model.

[0016] Figure 2 A schematic diagram of the mold opening process design structure for a novel double-bending one-step forming method provided by this utility model.

[0017] Explanation of markings in the diagram:

[0018] 1—Upper mold base; 2—Upper backing plate

[0019] 3 - Upper clamping plate 4 - Stripping plate

[0020] 5 - Upper mold inner release; 6 - Bending male mold

[0021] 7 - Lower mold inner ejection; 8 - Lower backing plate

[0022] 9 - Lower mold base 10 - Lower die plate

[0023] 11 - Lower foot pad; 12 - Lower support plate

[0024] 13 - Trial mold sheet; 14 - Guide pillar

[0025] 15 - Equal Height Sleeve 16 - Bending Punch

[0026] 17 - Spring; 18 - Upper mold screw

[0027] 19 - Cueing stroke 20 - Polyurethane rubber

[0028] 21—Equal Height Sleeve 22—Lower Mold Screw

[0029] 23 - Positioning Pin Detailed Implementation

[0030] Example

[0031] The product in this embodiment (such as...) Figure 1 As shown, in stamping, the existing technology involves bending in two steps: first forming the bending angle (1), then forming the bending angle (2). This results in low production efficiency and requires the development of two sets of molds, significantly increasing stamping production costs. To overcome the shortcomings of the existing technology, this utility model provides a novel mold process design structure for double bending in one step. The following is a combination of... Figure 1 The structure and working principle of a novel mold for double bending forming in one step without material stretching and deformation provided by this utility model are described.

[0032] This utility model provides a novel mold process design structure for one-step double-bending forming without material stretching and deformation, including an upper mold, a lower mold, and a double-bending forming component.

[0033] The upper mold includes an upper mold base 1, an upper pad 2, an upper clamping plate 3, a stripper plate 4, a guide post 14, a height equalizing sleeve 15, a spring 17, and an upper mold screw 18;

[0034] The lower mold includes a lower pad plate 8, a lower mold base 9, a lower punch plate 10, a lower pad foot 11, a lower support plate 12, a punch rod 19, urethane rubber 20, a height equalizing sleeve 21, a lower mold screw 22, and a positioning pin 23.

[0035] The double bending forming assembly includes an upper die inner release 5, a bending male die 6, a lower die inner release 7, and a bending punch 16.

[0036] The upper mold base 1, upper pad 2, and upper clamping plate 3 are accurately positioned by positioning pins and then locked together in sequence by upper mold screws 18; the stripper plate 4 is connected to the upper clamping plate 3 through an equal height sleeve 15; one end of the spring is connected to the upper mold base 1, and the other end is connected to the upper end face of the stripper plate 4; one end of the guide post 14 is fixed inside the upper pad 2, and the other end passes through the upper clamping plate and the stripper plate and is guided into the bending die 6, which plays the role of accurately guiding the stroke of the upper mold;

[0037] The upper mold inner ejector 5 is connected to the upper mold via the spring 17; one end of the spring 17 is connected to the inside of the upper mold base 1, and the other end is connected to the upper end face of the upper mold inner ejector 5; the bending punch 16 is connected to the lower end face of the upper pad 2; the bending male mold 6, the lower pad 8, and the lower mold base 9 are accurately positioned by the positioning pin 23, and then connected by the lower mold screw 23 in sequence; the lower mold inner ejector 7 is connected to the lower mold base 9 and the lower pad 8 via the equal height sleeve 21; the upper end of the striking rod 19 is connected to the lower mold inner ejector 7, and the lower end of the striking rod 19 is connected to the upper end face of the lower striking plate 10. The lower end face of the lower striking plate is provided with urethane rubber. The purpose of this arrangement is to facilitate the removal of the formed product from the lower mold inner ejector 7 after the mold is opened.

[0038] The lower mold base 9 is connected to a lower pad 11 at its lower end, and the lower end of the lower pad 11 is connected to the upper end of the lower support plate 12.

[0039] The working principle of a novel mold for double bending forming, one-step forming, and non-deformation without material pulling provided by this utility model will be introduced and explained below:

[0040] Step 1: Assemble and debug the mold, and install the debugged mold into the punch press.

[0041] Step 2: Adjust the installed mold to the open state and place the material sheet in the processing position of the fixed double bending forming component;

[0042] Step 3: The mold enters the production state, and the punch press moves downward, driving the upper mold to move downward; the upper mold inner stripper 5 and the lower mold inner stripper 7 press down on the test mold material 13;

[0043] Step 4: The upper die moves further down, and the bending punch 6 contacts and presses the sheet material. When the sheet material contacts the bending die, the bending angle (1) of the sheet material begins to form. As the upper die presses the sheet material down, the bending angle (1) of the sheet material is formed.

[0044] Step 5: The upper mold moves further down, and after the lower mold inner stripper 7 and the lower pad 8 are tightly attached, the sheet bending angle (2) begins to form. Then the bending punch 16 continues to move down until the mold is closed. At this time, the sheet bending angle (2) is formed.

[0045] Step 6: After the sheet is double-bent and formed, the punch press drives the upper die to move upward; as the die gradually opens, under the action of the punch rod 19, the lower punch plate 10 and the urethane adhesive 20, the double-bent sheet is removed from the lower die plate 7 and enters the next process.

[0046] Step 7: After the mold is fully opened, the upper mold, double bending forming component and lower mold are reset, and a new batch of sheet material enters the processing position for a new round of double bending forming.

Claims

1. A novel mold process design structure for double bending in one step, comprising an upper mold and a lower mold, wherein the upper mold comprises an upper mold base, an upper pad, an upper clamping plate, and a stripper plate stacked sequentially, as well as guide pillars, equal-height sleeves, positioning pins, and springs built into the upper mold; the lower mold comprises a lower pad and a lower mold base stacked sequentially; characterized in that, The mold also includes a double bending forming assembly, which includes a bending punch, an upper die inner stripper plate, a bending male die, a lower die inner stripper plate, and a stripping device. The upper die inner stripper plate is connected to the upper die via a spring. The bending punch is connected to the lower end face of the upper pad plate. The bending punch is positioned on the left and right sides of the upper die inner stripper plate and does not contact the left and right sides of the upper die inner stripper plate. The lower die inner support plate is connected to the lower die via a height-equalizing sleeve. The bending male die is positioned on the left and right sides of the lower die inner stripper plate and is connected to the upper end face of the lower pad plate. The stripping device is located on the lower die.

2. The novel mold process design structure as described in claim 1, characterized in that, The lower die inner stripper is provided with a boss, the horizontal length of which matches the length of the lower end face of the bending die; the height of the boss is less than the height of the bending die.

3. The novel mold process design structure as described in claim 2, characterized in that, The height of the boss is adjusted according to the height of the product to be formed.

4. The novel mold process design structure as described in claim 1, characterized in that, The stripping device includes a striking rod, a lower striking plate, and urethane adhesive; the upper end of the lower striking plate is connected to the striking rod; the lower end of the striking rod is connected to the lower striking plate, and the upper end is connected to the stripping plate inside the lower mold; the urethane adhesive is connected to the lower end of the lower striking plate.

5. The novel mold process design structure as described in claim 4, characterized in that, The striking rod is set with 2-6 rods.

6. The novel mold process design structure as described in claim 4, characterized in that, The novel mold process design structure also includes a lower pad and a lower support plate. The lower end face of the lower mold base is connected to the lower pad, and the lower end of the lower pad is connected to the upper end face of the lower support plate.

7. The novel mold process design structure as described in claim 6, characterized in that, The urethane adhesive is disposed between the lower punch plate and the lower support plate; the upper end of the urethane adhesive is connected to the lower end face of the lower punch plate; the lower end of the urethane adhesive is connected to the upper end face of the lower support plate.

Images