Stamping mechanism with negative angle reinforcement plate

Abstract

This utility model discloses a stamping forming mechanism with a negative angle reinforcing plate, including an upper die base and a lower die base. The lower die base is provided with a positioning seat, and a lower die support plate is movably mounted on the positioning seat. A nitrogen spring is provided in the lower die base, passing through the positioning seat and pressing against the lower die support plate. Mounting seats are provided on both sides of the lower die support plate on the lower die base. A lower die rotating blade block that rotates around a horizontal axis is provided in the mounting seats. A lower die ejector pin mechanism that pushes the lower die rotating blade block upward is provided on the side of the horizontal axis near the lower die support plate. The lower die rotating blade block is provided with a side forming groove on the outer side of the negative angle area of ​​the forming workpiece. An upper die driving block with an inverted trapezoidal cross section is provided on the upper die base. At least two vertically moving connecting guide rods are movably mounted on both sides of the upper die driving seat on the upper die base. Mounting blocks are provided at the ends of the connecting guide rods. A negative angle upper blade block that rotates around a horizontal axis is hinged to the mounting block. A wedge-shaped surface that cooperates with the driving surface is provided on the negative angle upper blade block.

Description

Technical Field

[0001] This utility model relates to a stamping mechanism with a negative angle reinforcing plate. Background Technology

[0002] For stamping processes involving flipping ordinary sheet metal on both sides with a negative angle requirement, existing technologies generally use wedges to ensure the side flanging angle; however, this requires a material ejection mechanism for the lower die, increasing mold manufacturing costs. Furthermore, the complex fabrication of the wedges increases processing time. Additionally, the subsequent adjustment of the wedges by the fitter adds to the operational difficulty. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a stamping forming mechanism with a negative angle reinforcing plate that has a simple structure and reliable processing.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a stamping forming mechanism with a negative angle reinforcing plate, including an upper die base and a lower die base. The lower die base is provided with a positioning seat, and a lower die support plate is movably provided on the positioning seat. A nitrogen spring is provided in the lower die base, passing through the positioning seat and pressing against the lower die support plate. Mounting seats are provided on both sides of the lower die support plate on the lower die base. A lower die rotating blade block that rotates around a horizontal axis is provided in the mounting seats. A lower die ejector pin mechanism that pushes the lower die rotating blade block upward is provided on the side of the horizontal axis near the lower die support plate. A side forming groove is provided on the outer side of the negative angle area of ​​the forming workpiece.

[0005] The upper mold base is provided with an upper mold drive block with an inverted trapezoidal cross section. The two sides of the upper mold drive block are drive surfaces. At least two connecting guide rods that move up and down are movably passed through the upper mold base on both sides of the upper mold drive base. The ends of the connecting guide rods are provided with mounting blocks. A negative angle upper cutter block that rotates around a horizontal axis is hinged on the mounting block. The negative angle upper cutter block is provided with a wedge-shaped surface that cooperates with the drive surface.

[0006] As a preferred embodiment, the lower outer side of the lower die rotating blade block is provided with a protruding shaft-shaped portion, and the mounting base is provided with a receiving groove for accommodating the shaft-shaped portion.

[0007] As a preferred embodiment, the lower mold support plate is detachably provided with a code printing insert.

[0008] As a preferred embodiment, the positioning seat is provided with guide pins for guiding the lower mold support plate.

[0009] As a preferred embodiment, the upper mold base is provided with mold closing guide pillars on both sides, and the lower mold base is provided with guide seats that cooperate with the mold closing guide pillars, and the guide seats are provided with guide grooves for the ends of the mold closing guide pillars to be inserted.

[0010] The beneficial effects of this utility model are:

[0011] This mold transforms the complex wedge-driven negative angle forming mechanism into a single rotating mechanism, which reduces the manufacturing cost of the wedge compared to traditional molds, lowers the overall mold cost, and reduces the need for subsequent debugging. It also simplifies the mold structure and shortens the mold processing time.

[0012] Because the lower outer side of the lower die rotating blade block has a protruding shaft-like part, and the mounting base has a receiving groove for accommodating the shaft-like part, the lower die rotating blade block can complete rotation in a very small space, allowing the mold to be designed to be more compact.

[0013] The lower mold support plate is detachably equipped with a coding printing insert, so that coding can be completed during negative angle processing, eliminating the need for subsequent separate coding operations, reducing processing costs and improving processing efficiency.

[0014] Because the positioning seat is equipped with guide pins to guide the lower mold support plate, the movement of the lower mold support plate is more stable.

[0015] Since the upper mold base is provided with mold closing guide pillars on both sides, and the lower mold base is provided with guide seats that cooperate with the mold closing guide pillars, and the guide seats are provided with guide grooves for the ends of the mold closing guide pillars to be inserted, the mold closing operation is more stable and reliable. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the stamping forming mechanism.

[0017] Figure 2 This is a cross-sectional view of another location of the stamping mechanism.

[0018] Figure 3 This is a three-dimensional structural diagram of the stamping forming mechanism (upper die open).

[0019] In the diagram: 1 Upper mold base, 2 Lower mold base, 3 Positioning seat, 4 Lower mold support plate, 5 Nitrogen spring, 6 Mounting seat, 7 Lower mold rotating cutter block, 8 Lower mold ejector pin mechanism, 9 Upper mold drive block, 10 Connecting guide rod, 11 Mounting block, 12 Negative angle upper cutter block, 13 Shaft-shaped part, 14 Code printing insert, 15 Guide pin, 16 Mold closing guide post, 17 Guide seat. Detailed Implementation

[0020] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figure 1-3As shown, the stamping mechanism with a negative angle reinforcing plate includes an upper die base 1 and a lower die base 2. A positioning seat 3 is provided on the lower die base 2, and a lower die support plate 4 is movably mounted on the positioning seat 3. A guide pin 15 is provided on the positioning seat 3 to guide the lower die support plate 4. A character printing insert 14 is detachably provided in the lower die support plate 4. A nitrogen spring 5 passes through the positioning seat 3 and presses against the lower die support plate 4 in the lower die base 2.

[0022] The lower die base 2 has mounting seats 6 on both sides of the lower die support plate 4. Each mounting seat 6 contains a lower die rotating blade 7 that rotates around a horizontal axis. The lower outer side of the lower die rotating blade 7 has a protruding shaft-like portion 13, and the mounting seat 6 has a receiving groove to accommodate the shaft-like portion 13. On the side of the lower die base 2 near the lower die support plate 4 along the horizontal axis, there is a lower die ejector pin mechanism 8 that pushes the lower die rotating blade 7 upwards. The lower die rotating blade 7 has a side forming groove on the outer side of the negative angle area of ​​the formed workpiece.

[0023] The upper mold base 1 is provided with an upper mold drive block 9 with an inverted trapezoidal cross section. The two sides of the upper mold drive block 9 are drive surfaces. At least two vertically moving connecting guide rods 10 are movably passed through the upper mold base 1 on both sides of the upper mold drive base. The ends of the connecting guide rods 10 are provided with mounting blocks 11. A negative angle upper cutter block 12 that rotates around a horizontal axis is hinged on the mounting block 11. The negative angle upper cutter block 12 is provided with a wedge-shaped surface that cooperates with the drive surface.

[0024] The upper mold base 1 is provided with mold closing guide pillars 16 on both sides, and the lower mold base 2 is provided with guide seats 17 that cooperate with the mold closing guide pillars 16. The guide seats 17 are provided with guide grooves for the ends of the mold closing guide pillars 16 to be inserted.

[0025] During stamping, the lower die support plate 4 rises under the action of the nitrogen spring 5 to support and position the sheet metal; the upper die negative angle upper blade block 12 moves downward and contacts the lower die support plate 4 to press the sheet metal. When the lower die support plate 4 compresses to the set position, the lower die rotating blade block 7 contacts the part and forms a flange angle of more than 90 degrees along the rotation axis and angle setting; when the upper die leaves the die, the lower die support plate 4 and the lower die rotating blade block 7 return to their free state; the upper die drive block 9 ejects the material and removes the negative angle of the part.

[0026] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the protection scope of the present invention.

Claims

1. A stamping forming mechanism with a negative angle reinforcing plate, comprising an upper die base (1) and a lower die base (2), wherein a positioning seat (3) is provided on the lower die base (2), a lower die support plate (4) is movably provided on the positioning seat (3), a nitrogen spring (5) is provided in the lower die base (2) passing through the positioning seat (3) and pressing against the lower die support plate (4), and mounting seats (6) are provided on both sides of the lower die support plate (4) on the lower die base (2); Its features are: The mounting base (6) is provided with a lower mold rotating blade block (7) that rotates around a horizontal axis. The lower mold base (2) is provided with a lower mold ejector pin mechanism (8) that pushes the lower mold rotating blade block (7) upward on the side of the horizontal axis near the lower mold support plate (4). The lower mold rotating blade block (7) is provided with a side forming groove on the outer side of the negative angle area of ​​the forming workpiece. The upper mold base (1) is provided with an upper mold driving block (9) with an inverted trapezoidal cross section. The two sides of the upper mold driving block (9) are driving surfaces. At least two vertically moving connecting guide rods (10) are movably passed through the upper mold base (1) on both sides of the upper mold driving base. The connecting guide rods (10) are provided with mounting blocks (11) at their ends. A negative angle upper blade block (12) that rotates around a horizontal axis is hinged on the mounting block (11). The negative angle upper blade block (12) is provided with a wedge-shaped surface that cooperates with the driving surface.

2. The stamping forming mechanism with a negative angle reinforcing plate as described in claim 1, characterized in that: The lower outer side of the rotating die block (7) is provided with a protruding shaft-shaped part (13), and the mounting base (6) is provided with a receiving groove for accommodating the shaft-shaped part (13).

3. The stamping forming mechanism with a negative angle reinforcing plate as described in claim 1, characterized in that: The lower mold support plate (4) is detachably provided with a code printing insert (14).

4. The stamping forming mechanism with a negative angle reinforcing plate as described in claim 1, characterized in that: The positioning seat (3) is provided with a guide pin (15) for guiding the lower mold support plate (4).

5. The stamping forming mechanism with a negative angle reinforcing plate as described in claim 1, characterized in that: The upper mold base (1) is provided with mold closing guide pillars (16) on both sides, and the lower mold base (2) is provided with a guide seat (17) that cooperates with the mold closing guide pillars (16). The guide seat (17) is provided with a guide groove for the end of the mold closing guide pillars (16) to be inserted.

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