High-precision sheet metal stamping die

Abstract

The utility model discloses a high-precision sheet metal stamping die, which relates to the technical field of dies and comprises a lower die component and an upper die component which can be butted and matched with each other. The lower die assembly comprises a base and a lower die block arranged on the base, a shaping arc groove is formed in the lower die block, and a discharging opening is formed in the inner wall of the shaping arc groove. The upper die assembly comprises a top seat connected with the base through stand columns, a top plate arranged below the top seat, an upper die block arranged at the lower end of the top plate and a first power piece installed on the top seat, the first power piece is used for driving the top plate and the upper die block to press downwards, and an arc-shaped male die matched with the shaping arc groove is arranged on the upper die block. A second power piece is installed in the arc-shaped male die and connected with a punch, a through hole corresponding to the shaping arc groove is formed in the arc-shaped male die, and the punch is arranged in the through hole, so that the precision of a punched hole can be improved, parts on a follow-up arc-shaped plate can be installed more firmly, shaping and punching of the arc-shaped plate can be completed in one stroke, and the punching efficiency of the arc-shaped plate is improved. The production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a high-precision sheet metal stamping mold. Background Technology

[0002] Stamping dies are a type of processing equipment used for pressure processing, playing a crucial role in industrial production, especially in manufacturing. When material is placed between the upper and lower dies, the upper die moves downward and closes with the lower die, stamping the material. During this process, the die's cutting edges, cavities, and other structures force the material to deform or separate in a pre-designed manner.

[0003] In modern industrial production, curved sheet metal is widely used in aerospace, automobile manufacturing, architectural decoration, and many other fields. During use, these curved sheet metals often require holes of various sizes to be punched into their surfaces for purposes such as component installation, weight reduction, or fluid flow.

[0004] Currently, traditional forming and punching processes for curved sheet metal still have many shortcomings. For example, most existing stamping dies specifically designed for curved sheet metal cannot complete the punching operation while shaping the sheet metal into a curved shape. The sheet metal must first be shaped into a curved shape and then transferred to another punching machine for punching. This not only increases the number of steps and extends the production cycle but also increases production costs. Furthermore, existing punching processes often fail to ensure that the punching direction is perpendicular to the curved surface of the sheet metal, resulting in holes that do not meet requirements. This affects product quality and subsequent performance, especially for products with extremely high precision requirements for component installation, potentially leading to incorrect component installation and impacting the overall product performance and reliability.

[0005] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-precision sheet metal stamping die, comprising a lower die assembly and an upper die assembly that can be docked and cooperated with each other;

[0008] The lower mold assembly includes a base and a lower module disposed on the base. The lower module is provided with a shaping arc groove, and the inner wall of the shaping arc groove is provided with a material discharge port.

[0009] The upper mold assembly includes a top seat connected to the base via a column, a top plate disposed below the top seat, an upper module disposed at the lower end of the top plate, and a power component one mounted on the top seat. The power component one is used to drive the top plate and the upper module to press down. The upper module is provided with an arc-shaped punch that matches the forming arc groove.

[0010] The arc-shaped punch is equipped with a second power component, which is connected to a punch. The arc-shaped punch has a through hole corresponding to the forming arc groove. The punch is located in the through hole. The second power component is installed at an angle. When the arc-shaped punch and the forming arc groove are connected, the punch is perpendicular to the arc surface of the forming arc groove, and the blanking port is set in a straight line with the punch.

[0011] It also includes limiting mechanisms located on both sides of the upper end of the lower module to limit the two ends of the plate, and an ejection mechanism located at the lower end of the forming arc groove to eject the workpiece after forming and punching.

[0012] As a further embodiment of this utility model: the limiting mechanism includes an irregularly shaped plate, the irregularly shaped plate having a limiting part and a fixing part, the fixing part being perpendicular to the upper surface of the lower module and fixed to the lower module, the limiting part being parallel to the upper surface of the lower module, and a limiting space for accommodating the plate existing between the limiting part and the lower module.

[0013] As a further embodiment of this utility model: the ejection mechanism includes a telescopic rod, a base plate connected to the telescopic end of the telescopic rod, and an ejection spring disposed between the base plate and the telescopic rod;

[0014] The bottom surface of the shaping arc groove is provided with a receiving groove, the telescopic rod is installed in the receiving groove, the upper end of the receiving groove forms a secondary groove that matches the substrate, and the surface curvature of the substrate is consistent with the curvature of the shaping arc groove.

[0015] As a further embodiment of this utility model: the upper module has an installation groove at its upper end, and the through hole is connected to the installation groove, wherein the second power component is installed in the installation groove, and the punch extends into the through hole.

[0016] As a further embodiment of this utility model: slots are provided on both sides of the upper end of the lower module, the fixing part is inserted and fixed inside the slot, and the side end of the lower module is provided with a bolt, the bolt being used to fix the fixing part in the slot.

[0017] As a further embodiment of this utility model: the lower module is also provided with a material feeding channel that is connected to the material discharge port, and the material feeding channel extends downward and penetrates the base, and the lower end of the base is provided with a material storage notch.

[0018] As a further embodiment of this utility model: guide posts are provided at the four corners of the upper end of the top plate, and the upper ends of the guide posts extend through and to the top of the top base.

[0019] Compared with the existing technology, the beneficial effects of this technical solution are as follows: the arc-shaped punch and the forming arc groove shape the sheet into an arc-shaped plate. At this time, the second power component is activated, so that the punch passes through the through hole on the arc-shaped punch and punches the arc-shaped plate. The punch is set at an angle and is perpendicular to the arc surface of the forming arc groove and the position of the arc plate to be punched. This can improve the accuracy of the punched hole, make the subsequent parts on the arc plate more firmly installed, and realize that the forming and punching of the arc plate can be completed in one stroke, which can reduce the number of processes and improve production efficiency.

[0020] By using the limiting and fixing parts of the shaped plate in the limiting mechanism, during the stamping process, the two ends of the plate are restricted from directly curling upwards by the limiting parts. Instead, they gradually move towards the center as the middle part is stamped and formed, and only after the plate forms the prototype of the arc plate does it break away from the limiting part. This makes the structure of the plate more stable after it is formed into an arc plate and reduces the springback of the material.

[0021] After the sheet metal is processed, the elastic potential energy of the ejector spring is used to lift the bottom plate, which in turn lifts the processed workpiece, making it easier for the operator to remove the workpiece and improving operational convenience.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 2 yes Figure 1 Enlarged schematic diagram of a local structure at point A;

[0026] Figure 3 yes Figure 1 Enlarged schematic diagram of the local structure at point B;

[0027] Figure 4 yes Figure 1 Enlarged schematic diagram of the local structure at point C;

[0028] The corresponding labels in the attached diagram are explained as follows:

[0029] 1. Lower mold assembly; 2. Upper mold assembly; 3. Base; 31. Material storage notch; 4. Lower module; 41. Shaping arc groove; 42. Material drop port; 43. Material discharge channel; 44. Slot; 45. Receiving groove; 46. Secondary groove; 5. Top seat; 6. Top plate; 61. Guide post; 7. Upper module; 71. Arc-shaped punch; 72. Through hole; 73. Mounting groove; 8. Power component one; 9. Power component two; 91. Punch; 10. Limiting mechanism; 101. Irregular plate; 102. Limiting part; 103. Fixing part; 11. Ejection mechanism; 111. Telescopic rod; 112. Base plate; 113. Ejection spring. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-4 A high-precision sheet metal stamping die includes a lower die assembly 1 and an upper die assembly 2 that can be docked and cooperate with each other;

[0032] The lower mold assembly 1 includes a base 3 and a lower module 4 disposed on the base 3. The lower module 4 is provided with a shaping arc groove 41, and the inner wall of the shaping arc groove 41 is provided with a material discharge port 42.

[0033] The upper mold assembly 2 includes a top seat 5 connected to the base 3 via a column, a top plate 6 disposed below the top seat 5, an upper module 7 disposed at the lower end of the top plate 6, and a power component 8 mounted on the top seat 5. The power component 8 is used to drive the top plate 6 and the upper module 7 to press down. The upper module 7 is provided with an arc-shaped punch 71 that matches the forming arc groove 41.

[0034] The arc-shaped punch 71 is equipped with a second power component 9, which is connected to a punch 91. The arc-shaped punch 71 has a through hole 72 corresponding to the forming arc groove 41. The punch 91 is located in the through hole 72. The second power component 9 is installed at an angle. When the arc-shaped punch 71 and the forming arc groove 41 are connected, the punch 91 is perpendicular to the arc surface of the forming arc groove 41. The blanking port 42 is arranged in a straight line with the punch 91. There are two second power components 9 installed, which are inclined in opposite directions, so that the two punches 91 are inclined on both sides of the arc-shaped punch 71. The blanking port 42 is also opened in two places corresponding to the two punches, and is distributed on the arc surface on both sides of the inner wall of the forming arc groove 41.

[0035] It also includes a limiting mechanism 10 set on both sides of the upper end of the lower module 4 to limit the two ends of the plate, and an ejection mechanism 11 set at the lower end of the forming arc groove 41 to eject the workpiece after forming and punching.

[0036] Specifically, during processing, the sheet metal is placed on the lower module 4, and the position of both ends of the sheet metal is restricted by the limiting mechanism 10. Then, the power component 8 is activated to push the top plate 6 and the upper module 7 down to close with the lower module 4. During this process, the arc-shaped punch 71 applies pressure to the sheet metal, and the sheet metal is shaped into an arc plate by the arc-shaped punch 71 and the forming arc groove 41. At this time, the power component 9 is activated, so that the punch 91 passes through the through hole 72 on the arc-shaped punch 71 and punches the arc plate. The scrap material that is punched out passes through the punch 91. The material discharge port 42 is arranged in a straight line, and the lower module 4 is also provided with a material discharge channel 43 connected to the material discharge port 42. The material discharge channel 43 extends downward and passes through the base 3. The lower end of the base 3 is provided with a material storage gap 31. Waste material enters the material discharge channel 43 from the material discharge port 42 and is discharged to the lower end of the base 3 through the material discharge channel 43. By opening the material storage gap 31 at the lower end of the base 3, the waste material is stored and cleaned regularly by the staff. Among them, the power component 8 and the power component 9 can be hydraulic cylinders or air cylinders, which are not limited here.

[0037] In summary, this solution allows the forming and punching of the arc plate to be completed in one stroke, reducing the number of processes and improving production efficiency. In addition, the punch 91 is set at an angle and is perpendicular to the arc surface of the forming groove 41 and the position of the arc plate to be punched, which can improve the accuracy of the punched holes and make the subsequent installation of parts on the arc plate more secure.

[0038] The top plate 6 is used to cover the top of the upper module 7. After the power component 2 9 is installed on the upper module 7, the top plate 6 can cover the top of the upper module 7, which can protect the power component 2 9. Compared with the connection between the power component 1 8 and the upper module 7, the connection with the top plate 6 is simpler and more secure, which can ensure the assembly of each component firmly. Furthermore, guide posts 61 are set at the four corners of the upper end of the top plate 6. The upper end of the guide post 61 passes through and extends to the top seat 5. The top seat 5 has corresponding through holes for the guide post 61 to pass through. A guide bearing sleeve can also be installed in the through hole to ensure that the guide post 61 can only move in the vertical direction. This ensures that the position of the top plate 6 and the upper module 7 remains accurate during the up and down movement, so that the processing accuracy can be maintained.

[0039] Furthermore, the upper module 7 has an installation groove 73 at its upper end, and the through hole 72 is connected to the installation groove 73. The power component 2 9 is installed in the installation groove 73, and the punch 91 extends into the through hole 72. The installation groove 73 facilitates the installation and fixing of the power component 2 9, and also facilitates subsequent inspection and maintenance.

[0040] In one embodiment, reference Figure 1 and Figure 3 The limiting mechanism 10 includes a shaped plate 101, which has a limiting part 102 and a fixing part 103. The fixing part 103 is perpendicular to the upper surface of the lower module 4 and is fixed to the lower module 4. The limiting part 102 is parallel to the upper surface of the lower module 4, and there is a limiting space between the limiting part 102 and the lower module 4 for accommodating the plate. The two ends of the plate are placed below the limiting part 102 of the shaped plate 101, so that during stamping, the two ends of the plate will not directly curl upwards, but will gradually move towards the middle as the middle part is stamped and formed, and will only leave the limiting part 102 after the plate has formed the prototype of the arc plate. This can make the structure of the plate more stable after it is formed into an arc plate and reduce the springback of the material.

[0041] Furthermore, slots 44 are provided on both sides of the upper end of the lower module 4, and the fixing part 103 is inserted and fixed inside the slot 44. Bolts are provided on the side of the lower module 4 to fix the fixing part 103 in the slot 44. The fixing part 103 of the irregular plate 101 is inserted into the slot 44 on the lower module 4 and fixed in the slot 44 by bolts on the side of the lower module. It can be understood that the side of the lower module 4 has a screw hole that communicates with the slot 44, and the fixing part 103 has a corresponding screw groove. The bolt is screwed into the screw hole and screwed into the screw groove to fix the fixing part 103. When processing plates of different thicknesses, the bolts can be unscrewed to quickly replace the irregular plate 101 of different specifications, thereby forming irregular plates 101 with different high-end limiting spaces, thus improving processing adaptability.

[0042] In one embodiment, reference Figure 1 and Figure 4The ejection mechanism 11 includes a telescopic rod 111, a base plate 112 connected to the telescopic end of the telescopic rod 111, and an ejection spring 113 disposed between the base plate 112 and the telescopic rod 111. A receiving groove 45 is formed on the bottom surface of the forming arc groove 41. The telescopic rod 111 is installed in the receiving groove 45. A secondary groove 46 matching the base plate 112 is formed at the upper end of the receiving groove 45, and the surface curvature of the base plate 112 is consistent with the curvature of the forming arc groove 41. When the upper die assembly 2 stamps the sheet metal, the sheet metal presses down on the base plate 112 during the pressing and deformation process, causing the base plate 111... 2 retracts into the secondary groove 46. At the same time, the telescopic end of the telescopic rod 111 retracts, and the ejector spring 113 is compressed and accumulates elastic potential energy. After the plate is processed, the upper mold assembly 2 is demolded. The elastic potential energy of the ejector spring 113 is used to lift the processed workpiece so that the operator can take away the workpiece, which improves the convenience of operation. In addition, the curvature of the bottom plate 112 surface is consistent with the curvature of the forming arc groove 41. After the bottom plate 112 retracts into the secondary groove 46, the arc surface of the forming arc groove 41 can remain flat, avoiding defects in the workpiece after forming.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-precision sheet metal stamping die, characterized in that, It includes a lower mold assembly (1) and an upper mold assembly (2) that can be docked and cooperate with each other; The lower mold assembly (1) includes a base (3) and a lower module (4) disposed on the base (3). The lower module (4) is provided with a shaping arc groove (41), and the inner wall of the shaping arc groove (41) is provided with a material discharge port (42). The upper mold assembly (2) includes a top seat (5) connected to the base (3) via a column, a top plate (6) disposed below the top seat (5), an upper module (7) disposed at the lower end of the top plate (6), and a power component (8) mounted on the top seat (5). The power component (8) is used to drive the top plate (6) and the upper module (7) to press down. The upper module (7) is provided with an arc-shaped punch (71) that matches the forming arc groove (41). The arc-shaped punch (71) is equipped with a second power component (9), which is connected to a punch (91). The arc-shaped punch (71) has a through hole (72) corresponding to the forming arc groove (41). The punch (91) is located in the through hole (72). The second power component (9) is installed at an angle. When the arc-shaped punch (71) and the forming arc groove (41) are connected, the punch (91) is perpendicular to the arc surface of the forming arc groove (41). The blanking port (42) and the punch (91) are arranged in a straight line. It also includes a limiting mechanism (10) set on both sides of the upper end of the lower module (4) for limiting the two ends of the plate, and an ejection mechanism (11) set on the lower end of the forming arc groove (41) for ejecting the workpiece after forming and punching.

2. The high-precision sheet metal stamping die according to claim 1, characterized in that, The limiting mechanism (10) includes a shaped plate (101), which has a limiting part (102) and a fixing part (103). The fixing part (103) is perpendicular to the upper surface of the lower module (4) and is fixed to the lower module (4). The limiting part (102) is parallel to the upper surface of the lower module (4), and there is a limiting space between the limiting part (102) and the lower module (4) for accommodating the plate.

3. The high-precision sheet metal stamping die according to claim 1, characterized in that, The ejection mechanism (11) includes a telescopic rod (111), a base plate (112) connected to the telescopic end of the telescopic rod (111), and an ejection spring (113) disposed between the base plate (112) and the telescopic rod (111). The bottom surface of the shaping arc groove (41) is provided with a receiving groove (45), and the telescopic rod (111) is installed in the receiving groove (45). The upper end of the receiving groove (45) forms a secondary groove (46) that matches the substrate (112), and the surface curvature of the substrate (112) is consistent with the curvature of the shaping arc groove (41).

4. The high-precision sheet metal stamping die according to claim 1, characterized in that, The upper module (7) has an installation groove (73) at its upper end, and the through hole (72) is connected to the installation groove (73). The power component (9) is installed in the installation groove (73), and the punch (91) extends into the through hole (72).

5. The high-precision sheet metal stamping die according to claim 2, characterized in that, The lower module (4) has slots (44) on both sides of its upper end. The fixing part (103) is inserted and fixed inside the slot (44). The lower module (4) is provided with bolts on its side. The bolts are used to fix the fixing part (103) inside the slot (44).

6. The high-precision sheet metal stamping die according to claim 1, characterized in that, The lower module (4) is also provided with a material discharge channel (43) that is connected to the material discharge port (42), and the material discharge channel (43) extends downward and passes through the base (3). The lower end of the base (3) is provided with a material storage notch (31).

7. The high-precision sheet metal stamping die according to claim 2, characterized in that, Guide posts (61) are provided at the four corners of the upper end of the top plate (6), and the upper end of the guide posts (61) extends through and to the top seat (5).

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