Stamping die for eliminating circumferential opening of flange of partition plate

Abstract

The utility model relates to the technical field of stamping dies, and discloses a stamping die for eliminating a partition plate flanging circumferential opening, which comprises a lower die holder, a plate is arranged on the top end surface of the lower die holder, and a stamping part is arranged above the plate; and a mounting block is fixedly mounted outside the stamping part through a bolt structure, a flanging assembly is arranged on the end face of one side of the mounting block and comprises a first annular pressing block fixedly arranged on the end face of the side, close to the lower die base, of the mounting block, and an ejection mechanism is arranged in the lower die base. According to the stamping die capable of eliminating the circumferential opening of the flange of the partition plate, the third annular pressing block, the second annular pressing block and the first annular pressing block make contact with the outer edge of a plate in sequence during single-time stamping, and the outer edge of the plate can be progressively pressed and flanged; and therefore, the problem that circumferential cracks are formed in the outer side of the plate due to the fact that one-time stamping deformation is too large when the plate is stamped and flanged can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a stamping die that eliminates the circumferential opening of the partition flange. Background Technology

[0002] Flanging is a common process in sheet metal stamping. It is a forming method that uses a die to create a vertical edge with a certain angle along the closed or open curved edge of a blank on its flat or curved surface.

[0003] Existing stamping dies slide the flanging punch on the guide component during flanging, which not only makes the movement of the flanging punch more stable, but also ensures that the flanging punch does not deviate, thus improving the flanging accuracy.

[0004] However, most stamping dies on the market currently perform direct stamping in one step when flanging partitions, which can easily cause cracks on the circumference of the flanged partition. Alternatively, they may use a transmission-type multi-stamping method, which requires setting up multiple sets of stamping dies in sequence, making the operation process more complicated and resulting in certain defects in use. Therefore, we propose a stamping die that eliminates the openings on the circumference of the flanged partition to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a stamping die that eliminates the circumferential opening of the partition flange, so as to solve the problems mentioned in the background art. Existing stamping dies usually directly stamp and form the partition flange in one step, which easily causes cracks on the circumference of the partition flange, or use a transmission-type multiple stamping process, which requires setting multiple sets of stamping dies in sequence, making the operation process more complicated.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a stamping die for eliminating the circumferential opening of the partition flange, comprising a lower die base, a sheet metal is provided on the top surface of the lower die base, and a stamping part is provided above the sheet metal. A telescopic rod is fixedly installed on the end face of the stamping part near the sheet metal, and a pressure plate is fixedly provided on the telescopic end of the telescopic rod. The sheet metal is disposed between the lower die base and the pressure plate.

[0007] An installation block is fixedly mounted on the outside of the stamping part by a bolt structure, and a flange assembly is provided on one end face of the installation block. The flange assembly includes a first annular pressure block fixedly mounted on the end face of the installation block near the lower die base. An ejection mechanism is provided inside the lower die base.

[0008] As a preferred embodiment of the present invention, the flange assembly further includes a second annular pressing block disposed outside the first annular pressing block, and a third annular pressing block disposed outside the second annular pressing block, wherein the first annular pressing block and the second annular pressing block and the second annular pressing block and the third annular pressing block are both connected by a sliding connection.

[0009] As a preferred technical solution of this utility model, the first annular pressing block, the second annular pressing block and the third annular pressing block are arranged from far to near on the outer side of the mounting block along the axis of the mounting block relative to the lower mold base, and the top corners of the first annular pressing block, the second annular pressing block and the third annular pressing block near the plate are all arranged in an arc shape.

[0010] As a preferred embodiment of this utility model, the second annular pressing block and the third annular pressing block are both fixedly connected to a movable rod on the side end face near the mounting block, and a first spring is provided on the outer side of the movable rod. The movable rod and the first spring are distributed at equal angles about the axis of the mounting block.

[0011] As a preferred embodiment of this utility model, one end of the first spring is fixedly connected to the mounting block, and the other end of the first spring is fixedly connected to the second annular pressure block and the third annular pressure block respectively.

[0012] As a preferred technical solution of this utility model, the mounting block has a guide hole inside that cooperates with the movable rod, and the movable rod is slidably connected to the mounting block through the guide hole and guides the second annular pressure block and the third annular pressure block.

[0013] As a preferred embodiment of this utility model, the ejection mechanism is set at an equal angle to the axis of the lower mold base. The ejection mechanism includes a mounting hole opened on the outer end face of the lower mold base, and an ejector rod and a second spring are provided inside the mounting hole.

[0014] As a preferred embodiment of this utility model, the two ends of the second spring are fixedly connected to the push rod and the mounting hole respectively, and the push rod is slidably connected to the lower mold base through the mounting hole.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the stamping die that eliminates the circumferential opening of the partition flange can progressively form and flange the outer edge of the sheet material by having the third annular pressure block, the second annular pressure block and the first annular pressure block contact the outer edge of the sheet material in sequence during a single stamping, thereby avoiding the problem of circumferential cracks on the outer side of the sheet material due to excessive deformation during stamping and flangening.

[0016] 1. The first, second, and third annular pressure blocks are evenly arranged from the inside to the outside on the outer side of the sheet metal. These blocks are positioned from far to near relative to the lower die base along the axis of the mounting block. When the stamping part drives the mounting block and the flanging assembly to press down, the third annular pressure block first contacts the outer edge of the sheet metal, flanging its outermost edge. When the stamping part and mounting block press down until the third annular pressure block contacts the lower die base, the third annular pressure block and the first spring are compressed, and the first spring on the outside of the third annular pressure block shortens. At this time, the second annular pressure block contacts the outer edge of the sheet metal, further flanging it. Similarly, when the stamping part and mounting block press down until the second annular pressure block contacts the lower die base, the second annular pressure block and the first spring are compressed, and the first spring on the outside of the second annular pressure block shortens. At this time, the first annular pressure block contacts the outer edge of the sheet metal, further flanging it.

[0017] By having the third, second, and first annular blocks contact the outer edge of the sheet material sequentially during stamping, the outer edge of the sheet material can be progressively formed and flanged, thus avoiding the problem of circumferential cracks on the outer side of the sheet material due to excessive deformation during stamping and flanging.

[0018] 2. An ejector mechanism is evenly arranged inside the lower die base. When the pressure plate presses the sheet metal against the top of the lower die base, the ejector rod and the second spring are compressed into the mounting hole. When the stamping part resets and the pressure plate separates from the sheet metal, the second spring rebounds, and the ejector rod is lifted by the elastic force of the second spring, which facilitates the stamping die to quickly separate the sheet metal from the lower die base after stamping. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention in cross-section.

[0020] Figure 2 This is a cross-sectional structural diagram of the connection between the mounting block and the flange assembly of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a cross-sectional structural diagram of the connection between the lower mold base and the ejector rod of this utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of this utility model.

[0024] In the diagram: 1. Lower die base; 2. Stamping part; 3. Mounting block; 4. Telescopic rod; 5. Pressure plate; 6. Sheet metal; 700. Flanging assembly; 701. First annular pressure block; 702. Second annular pressure block; 703. Third annular pressure block; 704. Movable rod; 705. First spring; 8. Guide hole; 9. Mounting hole; 10. Push rod; 11. Second spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution: a stamping die for eliminating the circumferential opening of a partition flange, comprising a lower die base 1, a sheet metal 6 disposed on the top surface of the lower die base 1, and a stamping part 2 disposed above the sheet metal 6. A telescopic rod 4 is fixedly installed on the end face of the stamping part 2 near the sheet metal 6, and a pressure plate 5 is fixedly disposed on the telescopic end of the telescopic rod 4. The sheet metal 6 is disposed between the lower die base 1 and the pressure plate 5, specifically as follows... Figure 1 As shown, when the stamping part 2 presses down, the pressure plate 5 first contacts the sheet metal 6, causing the telescopic rod 4 to be compressed and shortened. The pressure plate 5 then presses the sheet metal 6 against the top surface of the lower die base 1, thereby limiting and fixing the sheet metal 6.

[0027] Specific examples Figure 1 As shown, a mounting block 3 is fixedly installed on the outside of the stamping part 2 by bolts, and a flange assembly 700 is provided on one end face of the mounting block 3. The flange assembly 700 includes a first annular pressing block 701 fixedly installed on the end face of the mounting block 3 near the lower die base 1, a second annular pressing block 702 is provided on the outside of the first annular pressing block 701, and a third annular pressing block 703 is provided on the outside of the second annular pressing block 702. Figure 2 and Figure 3 As shown, since the first annular pressing block 701 and the second annular pressing block 702 and the second annular pressing block 702 and the third annular pressing block 703 are both connected by sliding connections, and the first annular pressing block 701, the second annular pressing block 702 and the third annular pressing block 703 are arranged from far to near on the outside of the mounting block 3 along the axis of the mounting block 3 relative to the lower mold base 1, when the stamping part 2 drives the mounting block 3 and the flanging assembly 700 to press down, the third annular pressing block 703, the second annular pressing block 702 and the first annular pressing block 701 can contact the outer edge of the sheet 6 in sequence, thereby progressively pressing and flanging the outer edge of the sheet 6;

[0028] Furthermore, since the top corners of the first annular pressing block 701, the second annular pressing block 702, and the third annular pressing block 703 near the sheet 6 are all rounded, when the first annular pressing block 701, the second annular pressing block 702, and the third annular pressing block 703 are pressed down, they all contact the sheet 6 through the rounded corners, reducing the angle between the contact surfaces of the first annular pressing block 701, the second annular pressing block 702, and the third annular pressing block 703 and the sheet 6, it is easier to punch and flanging the sheet 6.

[0029] Furthermore, movable rods 704 are fixedly connected to the end faces of the second annular pressure block 702 and the third annular pressure block 703 near the mounting block 3, and a first spring 705 is provided on the outer side of the movable rod 704. The movable rod 704 and the first spring 705 are distributed at equal angles about the axis of the mounting block 3, and one end of the first spring 705 is fixedly connected to the mounting block 3, and the other end of the first spring 705 is fixedly connected to the second annular pressure block 702 and the third annular pressure block 703 respectively. At the same time, since the mounting block 3 has a guide hole 8 that cooperates with the movable rod 704, and the movable rod 704 is slidably connected to the mounting block 3 through the guide hole 8, the movable rod 704 guides the second annular pressure block 702 and the third annular pressure block 703, and the first spring 705 supports the second annular pressure block 702 and the third annular pressure block 703.

[0030] Specific examples Figure 1 and Figure 5 As shown, when the stamping part 2 drives the mounting block 3 and the flanging assembly 700 to press down, the third annular pressure block 703 first contacts the outer edge of the sheet metal 6, flanging the outermost edge of the sheet metal 6. When the stamping part 2 and the mounting block 3 press down until the third annular pressure block 703 contacts the lower die base 1, the third annular pressure block 703 and the first spring 705 are compressed, and the first spring 705 on the outer side of the third annular pressure block 703 shortens. At this time, the second annular pressure block 702 contacts the outer edge of the sheet metal 6, further flanging the sheet metal 6. Similarly, when the stamping part 2 and the mounting block 3 press down until... When the second annular pressure block 702 contacts the lower die base 1, the second annular pressure block 702 and the first spring 705 are compressed, and the first spring 705 on the outside of the second annular pressure block 702 is shortened. At this time, the first annular pressure block 701 contacts the outer edge of the sheet 6, further flanging the sheet 6. Thus, the outer edge of the sheet 6 can be progressively flanged by the third annular pressure block 703, the second annular pressure block 702 and the first annular pressure block 701 in sequence, avoiding the problem of large deformation in one stamping when flanging the sheet 6, which would cause circumferential cracks on the outside of the sheet 6.

[0031] Specific examples Figure 4 and Figure 5As shown, the lower mold base 1 is provided with an ejection mechanism inside. The ejection mechanism is set at an equal angle with respect to the axis of the lower mold base 1. The ejection mechanism includes a mounting hole 9 opened on the outer end face of the lower mold base 1. The mounting hole 9 is provided with an ejector rod 10 and a second spring 11. The two ends of the second spring 11 are fixedly connected to the ejector rod 10 and the mounting hole 9 respectively. The ejector rod 10 is slidably connected to the lower mold base 1 through the mounting hole 9. When the pressure plate 5 presses the sheet metal 6 on the top of the lower mold base 1, the ejector rod 10 and the second spring 11 are compressed into the interior of the mounting hole 9. When the stamping part 2 resets and separates the pressure plate 5 from the sheet metal 6, the second spring 11 rebounds. The ejector rod 10 is lifted by the elastic force of the second spring 11, so that the sheet metal 6 is quickly separated from the lower mold base 1.

[0032] The working principle of this utility model is as follows: When using this stamping die to eliminate the circumferential opening of the partition flange, the sheet metal 6 is first placed on the top surface of the lower die base 1. The stamping part 2 presses down to make the pressure plate 5 contact the sheet metal 6, thereby pressing and positioning the sheet metal 6. Specifically, as follows... Figure 1 and Figure 2 As shown, the first annular pressing block 701, the second annular pressing block 702, and the third annular pressing block 703 are evenly arranged from the inside to the outside on the outer side of the sheet metal 6. The first annular pressing block 701, the second annular pressing block 702, and the third annular pressing block 703 are arranged from far to near on the outer side of the sheet metal 6 along the axis of the mounting block 3 relative to the lower die base 1. When the stamping part 2 drives the mounting block 3 and the flanging assembly 700 to press down, the third annular pressing block 703, the second annular pressing block 702, and the first annular pressing block 701 can contact the outer edge of the sheet metal 6 in sequence, thereby progressively pressing and flanging the outer edge of the sheet metal 6. This avoids the problem of circumferential cracks on the outer side of the sheet metal 6 due to excessive deformation in one stamping when stamping and flanging the sheet metal 6.

[0033] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stamping die for eliminating the circumferential opening of the partition flange, comprising a lower die base (1), characterized in that: The top surface of the lower die base (1) is provided with a sheet metal (6), and a stamping part (2) is provided above the sheet metal (6). A telescopic rod (4) is fixedly installed on the end face of the stamping part (2) near the sheet metal (6), and a pressure plate (5) is fixedly provided at the telescopic end of the telescopic rod (4). The sheet metal (6) is located between the lower die base (1) and the pressure plate (5). The stamping part (2) is fixedly installed with a mounting block (3) by bolt structure, and a flange assembly (700) is provided on one side end face of the mounting block (3). The flange assembly (700) includes a first annular pressure block (701) fixedly installed on the side end face of the mounting block (3) near the lower die base (1). An ejection mechanism is provided inside the lower die base (1).

2. The stamping die for eliminating the circumferential opening of the partition flange according to claim 1, characterized in that: The flange assembly (700) further includes a second annular block (702) disposed outside the first annular block (701), and a third annular block (703) disposed outside the second annular block (702). The first annular block (701) and the second annular block (702) and the second annular block (702) and the third annular block (703) are both connected by a sliding connection.

3. A stamping die for eliminating the circumferential opening of the partition flange according to claim 2, characterized in that: The first annular pressure block (701), the second annular pressure block (702) and the third annular pressure block (703) are arranged from far to near on the outside of the mounting block (3) along the axis of the mounting block (3) relative to the lower mold base (1), and the top corners of the first annular pressure block (701), the second annular pressure block (702) and the third annular pressure block (703) near the plate (6) are all arranged in an arc shape.

4. A stamping die for eliminating the circumferential opening of the partition flange according to claim 3, characterized in that: The second annular pressure block (702) and the third annular pressure block (703) are both fixedly connected to a movable rod (704) on the side end face near the mounting block (3), and a first spring (705) is provided on the outside of the movable rod (704). The movable rod (704) and the first spring (705) are both distributed at equal angles about the axis of the mounting block (3).

5. A stamping die for eliminating the circumferential opening of the partition flange according to claim 4, characterized in that: One end of the first spring (705) is fixedly connected to the mounting block (3), and the other end of the first spring (705) is fixedly connected to the second annular pressure block (702) and the third annular pressure block (703) respectively.

6. A stamping die for eliminating the circumferential opening of the partition flange according to claim 5, characterized in that: The mounting block (3) has a guide hole (8) inside that cooperates with the movable rod (704), and the movable rod (704) is slidably connected to the mounting block (3) through the guide hole (8) and plays a guiding role for the second annular pressure block (702) and the third annular pressure block (703).

7. A stamping die for eliminating the circumferential opening of the partition flange according to claim 1, characterized in that: The ejection mechanism is set at an angle to the axis of the lower mold base (1). The ejection mechanism includes a mounting hole (9) opened on the outer end face of the lower mold base (1), and an ejector rod (10) and a second spring (11) are provided inside the mounting hole (9).

8. A stamping die for eliminating the circumferential opening of the partition flange according to claim 7, characterized in that: The two ends of the second spring (11) are fixedly connected to the push rod (10) and the mounting hole (9) respectively, and the push rod (10) is slidably connected to the lower mold base (1) through the mounting hole (9).

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