High strength press plate

Abstract

The utility model discloses a kind of high-strength material pressing plate, applied in cold stamping steel plate mould field, including lower backing plate, the upper foot pad is fixedly arranged on the lower backing plate, the upper surface of the upper foot pad is fixedly provided with upper die holder, the inside of the upper foot pad is provided with installation groove, the inside of the installation groove is fixedly provided with nitrogen spring, the nitrogen spring is fixedly provided with material pressing plate, the upper surface of the material pressing plate is provided with shaping assembly, when using, lower backing plate is as mould base, upper die holder is supported by upper foot pad, and the main frame structure of mould is formed, upper die holder goes down with press slide, drives material pressing plate to move downwards, first contact the part to be processed, nitrogen spring is compressed, generates the elastic force upwards, and the part is uniformly pressed in lower mould by material pressing plate, prevent part from deviating or warping when stamping, the uniform distribution of nitrogen spring ensures that material pressing plate is balanced, avoid local deformation, and overall rigidity can be improved by multi-point support.

Description

Technical Field

[0001] This utility model belongs to the field of cold stamping steel plate mold technology, and specifically relates to a high-strength pressure plate. Background Technology

[0002] In modern manufacturing, cold stamping has become a core technology for steel sheet forming and processing due to its advantages of high efficiency, high precision and low cost. It is widely used in automobile manufacturing, home appliance production and other fields. As a key component of cold stamping dies, the blank holder plays an important role in fixing the blank, preventing material displacement and warping and ensuring stamping accuracy during the stamping process.

[0003] The current announcement is for Chinese utility model patent CN208527889U, which discloses a pressure plate on a cold stamping die. It is provided with a pressure plate body, transverse reinforcing ribs, longitudinal reinforcing ribs, connecting seat, side ears, circular protrusions, rectangular protrusions, and a rubber layer. The bottom surface of the pressure plate body is fixedly connected to the circular protrusions and the rectangular protrusions. By setting a reinforcing rib mesh on the top surface of the pressure plate body, the deformation resistance of the pressure plate body can be greatly increased. The circular protrusions and rectangular protrusions on the bottom surface of the pressure plate body can concentrate the extrusion force of the pressure plate body on the workpiece at a certain point or a certain edge, thereby increasing the extrusion force of the pressure plate body on the workpiece.

[0004] The pressure plate in this patent is a one-piece pressure plate. The pressure plate has poor strength, which will shorten the service life of the mold. It requires a lot of machining and manual time to make constant modifications, which greatly increases the development cost. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength pressure plate, which solves the problem of the existing pressure plate on a cold stamping die. The pressure plate is an integral pressure plate with poor strength, which shortens the service life of the die and requires a lot of machining and manual time for continuous modification, greatly increasing the development cost.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-strength pressure plate, including a lower support plate, an upper pad fixedly provided on the lower support plate, an upper mold base fixedly provided on the upper surface of the upper pad, an installation groove opened inside the upper pad, the number of installation grooves being several and evenly arranged, a nitrogen spring fixedly provided inside the installation groove, a pressure plate fixedly provided on the nitrogen spring, and a shaping component provided on the upper surface of the pressure plate.

[0007] By adopting the above technical solution, and by setting up a lower support plate, upper pads, upper mold base, mounting groove, nitrogen springs, pressure plate, and forming components, the lower support plate serves as the mold base during use. The upper pads support the upper mold base, forming the main frame structure of the mold. The upper mold base moves downward with the press slide, causing the pressure plate to move downward and first contact the part to be processed. The nitrogen springs are compressed, generating an upward elastic force. The pressure plate evenly presses the part onto the lower mold, preventing the part from shifting or warping during stamping. The even distribution of nitrogen springs ensures that the pressure plate is subjected to balanced force, avoiding local deformation. Multi-point support can improve the overall rigidity.

[0008] Furthermore: the shaping component includes a fixing groove, a limiting cavity, a shaping insert, and a limiting block. The fixing groove is formed on the pressure plate. The limiting cavity is fixedly disposed on the side wall of the fixing groove. There are two limiting cavities, which are arranged symmetrically. The shaping insert is fixedly disposed in the fixing groove. The limiting block is fixedly disposed at both ends of the shaping insert. The limiting block is located in the limiting cavity.

[0009] By adopting the above technical solution, a shaping component is set up, and the shaping insert is installed on the pressure plate through a fixing groove. The limiting blocks at both ends are embedded in symmetrical limiting cavities to ensure the positional accuracy of the insert in the fixing groove and avoid part size deviation due to installation deviation. During operation, the shaping insert performs shaping processing on the part to ensure that the part achieves the expected shape, size accuracy and other requirements after forming.

[0010] Furthermore: a bottom block is fixedly provided on the lower surface of the pressure plate, and a sensing groove is provided on the upper mold base, with the bottom block corresponding to the sensing groove.

[0011] By adopting the above technical solution, by setting a bottom block and a sensing groove, when the nitrogen spring drives the pressure plate to move downward, the bottom block enters the sensing groove. The bottom block plays a role in limiting the stroke and positioning, ensuring the accurate position when the mold closes and other actions are in place, and ensuring the accuracy of the coordinated work of various mold components.

[0012] Furthermore, a guide post is fixedly provided on the lower surface of the pressure plate, and the guide post penetrates the upper mold base.

[0013] By adopting the above technical solution, guide columns are set up so that the pressure plate can be guided when the nitrogen spring drives the pressure plate to move up and down.

[0014] Furthermore, a pressure plate insert is provided in the fixing groove.

[0015] By adopting the above technical solution and setting a pressure plate insert, when the fixed groove is worn due to long-term use, the pressure plate insert can be replaced to compensate for the gap, thus avoiding the need to directly replace the pressure plate.

[0016] Furthermore: two mounting blocks are fixedly provided on the upper surface of the upper mold base and are arranged symmetrically. A baffle is fixedly provided on the mounting block, and the pressure plate is located between the two mounting blocks.

[0017] By adopting the above technical solution, and by setting up the mounting block and the baffle, the mounting plate can fix the baffle in place during use. When the nitrogen spring is not activated, the pressure plate maintains a vertical posture by relying on the inner side plane of the baffle, providing an initial accuracy reference for subsequent stamping.

[0018] Furthermore, a buffer pad is fixedly provided on the upper surface of the pressure plate.

[0019] By adopting the above technical solution, a buffer pad is set to buffer the pressure impact during pressing, thus avoiding indentations and scratches on the surface of the parts due to hard contact between the pressing plate and the parts.

[0020] Furthermore, the shaping insert is made of high-speed steel.

[0021] By adopting the above technical solution and using high-speed steel, which has extremely high hardness, excellent wear resistance, and strong impact resistance, its service life is much longer than that of ordinary tool steel in high-load and high-wear forming scenarios. This can reduce the frequency of replacement of forming inserts and ensure production continuity.

[0022] In summary, this utility model has the following beneficial effects:

[0023] By setting up a lower support plate, upper pads, upper mold base, mounting groove, nitrogen springs, pressure plate, and forming components, the lower support plate serves as the mold base during use. The upper pads support the upper mold base, forming the main frame structure of the mold. The upper mold base moves downward with the press slide, causing the pressure plate to move downward and first contact the part to be processed. The nitrogen springs are compressed, generating an upward elastic force. The pressure plate evenly presses the part onto the lower mold, preventing the part from shifting or warping during stamping. The even distribution of nitrogen springs ensures that the pressure plate is subjected to balanced force, avoiding local deformation. Multi-point support can improve the overall rigidity.

[0024] By setting up a shaping component, the shaping insert is installed on the pressure plate through a fixed groove. The limiting blocks at both ends are embedded in symmetrical limiting cavities to ensure the positional accuracy of the insert in the fixed groove and avoid part size deviation due to installation deviation. During operation, the shaping insert performs shaping processing on the part to ensure that the part achieves the expected shape, size accuracy and other requirements after forming.

[0025] Based on the above improvements, the overall technical effect achieved by this device is that it adopts a split design, improves overall rigidity through multi-point support, enhances the service life of the mold, and reduces development costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a left view of the present invention;

[0028] Figure 3 This is the utility model Figure 2 3D cross-sectional view at point AA;

[0029] Figure 4 This is a schematic diagram of the structure of the shaping component of this utility model.

[0030] In the diagram, 1. Lower support plate; 2. Upper pad; 3. Upper mold base; 4. Mounting groove; 5. Nitrogen spring; 6. Pressure plate; 7. Shaping component; 8. Bottom block; 9. Sensing groove; 10. Guide post; 11. Pressure plate insert; 12. Mounting block; 13. Baffle; 14. Buffer pad; 701. Fixing groove; 702. Limiting cavity; 703. Shaping insert; 704. Limiting block. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example:

[0033] Please see Figures 1-4 The present invention provides a technical solution: a high-strength pressure plate 6, including a lower support plate 1, an upper pad 2 fixedly disposed on the lower support plate 1, an upper mold base 3 fixedly disposed on the upper surface of the upper pad 2, an installation groove 4 opened inside the upper pad 2, the number of installation grooves 4 being several and evenly arranged, a nitrogen spring 5 fixedly disposed inside the installation groove 4, a pressure plate 6 fixedly disposed on the nitrogen spring 5, and a shaping component 7 disposed on the upper surface of the pressure plate 6.

[0034] By setting up a lower support plate 1, upper pad 2, upper mold base 3, mounting groove 4, nitrogen spring 5, pressure plate 6, and forming component 7, the lower support plate 1 serves as the mold base during use. The upper mold base 3 is supported by the upper pad 2, forming the main frame structure of the mold. The upper mold base 3 moves downward with the press slide, causing the pressure plate 6 to move downward and first contact the part to be processed. The nitrogen spring 5 is compressed, generating an upward elastic force. The pressure plate 6 evenly presses the part onto the lower mold, preventing the part from shifting or warping during stamping. The even distribution of the nitrogen spring 5 ensures that the pressure plate 6 is subjected to balanced force, avoiding local deformation. Multi-point support can improve the overall rigidity.

[0035] refer to Figure 4The shaping component 7 includes a fixing groove 701, a limiting cavity 702, a shaping insert 703, and a limiting block 704. The fixing groove 701 is formed on the pressure plate 6. The limiting cavity 702 is fixedly set on the side wall of the fixing groove 701. There are two limiting cavities 702, which are arranged symmetrically. The shaping insert 703 is fixedly set in the fixing groove 701. The limiting blocks 704 are fixedly set at both ends of the shaping insert 703 and are located in the limiting cavity 702. By setting the shaping component 7, the shaping insert 703 is installed on the pressure plate 6 through the fixing groove 701. The limiting blocks 704 at both ends are embedded in the symmetrical limiting cavities 702 to ensure the positional accuracy of the insert in the fixing groove 701 and avoid the part size deviation during shaping due to installation deviation. During operation, the shaping insert 703 performs shaping processing on the part to ensure that the part achieves the expected shape, size accuracy, and other requirements after forming.

[0036] refer to Figure 3 The lower surface of the pressure plate 6 is fixedly provided with a bottom block 8, and the upper mold base 3 is provided with a sensing groove 9. The bottom block 8 is correspondingly set with the sensing groove 9. By setting the bottom block 8 and the sensing groove 9, when the nitrogen spring 5 drives the pressure plate to move downward, the bottom block 8 enters the sensing groove 9. The bottom block 8 plays the role of stroke limit and positioning, ensuring the accurate position when the mold closes and other actions are in place, and ensuring the accuracy of the coordinated work of the various parts of the mold.

[0037] refer to Figure 2 A guide post 10 is fixedly provided on the lower surface of the pressure plate 6. The guide post 10 passes through the upper mold base 3. By providing the guide post 10, the pressure plate 6 can be guided when the nitrogen spring 5 drives the pressure plate 6 to move up and down.

[0038] refer to Figure 3 The fixing groove 701 is provided with a pressure plate insert 11. By setting the pressure plate insert 11, when the fixing groove 701 is worn due to long-term use, the pressure plate insert 11 can be replaced to compensate for the gap, avoiding the need to directly replace the pressure plate 6.

[0039] refer to Figure 1 The upper surface of the upper die holder 3 is fixedly provided with two mounting blocks 12 arranged symmetrically. A baffle 13 is fixedly provided on the mounting block 12. The pressure plate 6 is located between the two mounting blocks 12. By setting the mounting blocks 12 and the baffle 13, the mounting plate can fix the baffle 13 during use. When the nitrogen spring 5 is not activated, the pressure plate 6 maintains a vertical posture by relying on the inner side plane of the baffle 13, providing an initial accuracy reference for subsequent stamping.

[0040] refer to Figure 1A buffer pad 14 is fixedly provided on the upper surface of the pressure plate 6. By providing the buffer pad 14, the pressure impact is buffered during pressing, and the surface of the part is prevented from being indented or scratched due to hard contact with the pressure plate 6.

[0041] refer to Figure 4 The shaping insert 703 is made of high-speed steel. High-speed steel has extremely high hardness, excellent wear resistance, and strong impact resistance. Under high load and high wear shaping scenarios, its service life is much longer than that of ordinary tool steel, which can reduce the replacement frequency of the shaping insert 703 and ensure production continuity.

[0042] Brief description of usage:

[0043] In use, the lower support plate 1 serves as the mold base, and the upper mold base 3 is supported by the upper pad 2 to form the main frame structure of the mold. The upper mold base 3 moves down with the press slide, driving the pressure plate 6 to move downward. It first contacts the part to be processed, and the nitrogen spring 5 is compressed to generate an upward elastic force. The pressure plate 6 evenly presses the part onto the lower mold to prevent the part from shifting or warping during stamping. The even distribution of the nitrogen spring 5 ensures that the pressure plate 6 is subjected to balanced force, avoiding local deformation. Multi-point support can improve the overall rigidity. When the nitrogen spring 5 drives the pressure plate 6 to move up and down, the guide column 10 can guide the pressure plate 6. When the fixing groove 701 is worn due to long-term use, the pressure plate insert 11 can be replaced to compensate for the gap, avoiding the need to directly replace the pressure plate 6.

[0044] Then, the shaping insert 703 is installed on the pressure plate 6 through the fixing groove 701, and the limiting blocks 704 at both ends are embedded in the symmetrical limiting cavities 702 to ensure the positional accuracy of the insert in the fixing groove 701 and avoid the part size deviation caused by installation deviation. During operation, the shaping insert 703 performs shaping processing on the part to ensure that the part reaches the expected shape, size accuracy and other requirements after forming.

[0045] Finally, when the nitrogen spring 5 moves the pressure plate downward, it enters the sensing groove 9 and the bottom block 8. The bottom block 8 plays a role in limiting the stroke and positioning, ensuring the accurate position when the mold closes and other actions are in place, and ensuring the accuracy of the coordinated work of all parts of the mold.

[0046] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A high-strength pressure plate, comprising a lower support plate (1), characterized in that: The lower support plate (1) is fixedly provided with an upper pad (2), and the upper mold base (3) is fixedly provided on the upper surface of the upper pad (2). The upper pad (2) is provided with an installation groove (4), and the number of installation grooves (4) is several and evenly arranged. A nitrogen spring (5) is fixedly provided inside the installation groove (4), and a pressure plate (6) is fixedly provided on the nitrogen spring (5). A shaping component (7) is provided on the upper surface of the pressure plate (6).

2. The high-strength pressure plate according to claim 1, characterized in that: The shaping component (7) includes a fixing groove (701), a limiting cavity (702), a shaping insert (703), and a limiting block (704). The fixing groove (701) is opened on the pressure plate (6). The limiting cavity (702) is fixedly disposed on the side wall of the fixing groove (701). There are two limiting cavities (702) and they are arranged symmetrically. The shaping insert (703) is fixedly disposed in the fixing groove (701). The limiting block (704) is fixedly disposed at both ends of the shaping insert (703). The limiting block (704) is located in the limiting cavity (702).

3. The high-strength pressure plate according to claim 1, characterized in that: The lower surface of the pressure plate (6) is fixedly provided with a bottom block (8), and the upper mold base (3) is provided with a sensing groove (9). The bottom block (8) and the sensing groove (9) are respectively provided.

4. A high-strength pressure plate according to claim 1, characterized in that: A guide post (10) is fixedly provided on the lower surface of the pressure plate (6), and the guide post (10) penetrates the upper mold base (3).

5. A high-strength pressure plate according to claim 2, characterized in that: A pressure plate insert (11) is provided in the fixing groove (701).

6. A high-strength pressure plate according to claim 1, characterized in that: The upper surface of the upper mold base (3) is fixedly provided with an installation block (12). There are two installation blocks (12) arranged symmetrically. A baffle (13) is fixedly provided on the installation block (12). The pressure plate (6) is located between the two installation blocks (12).

7. A high-strength pressure plate according to claim 1, characterized in that: A buffer pad (14) is fixedly provided on the upper surface of the pressure plate (6).

8. A high-strength pressure plate according to claim 2, characterized in that: The shaping insert (703) is made of high-speed steel.

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