Large product corner punch forming die

Abstract

The utility model discloses a large product corner punch forming die, which relates to the technical field of punching dies and comprises a lower supporting plate, a lower cushion block is mounted at the top end of the lower supporting plate through a lower supporting column, and a lower die holder is arranged at the top end of the lower cushion block. A lower stripping plate is arranged in the lower clamping plate, and auxiliary bending mechanisms used for punching workpieces are arranged on the two sides of the lower stripping plate. According to the large product corner punch forming die, the upper die plate moves downwards while moving outwards, so that the upper die plate can press the side edge of a seesaw, the angle of the seesaw is deflected, the side edge of the seesaw is attached to the side edge of a positioning block, and the side edge of the seesaw is located in the positioning block; a workpiece needing to be machined is punched when the upper die plate moves downwards, the outer side of the workpiece is attached to the inner side of the seesaw, the inner side of the workpiece is attached to the outer side of the upper die plate, and the workpiece can be punched and bent through the space between the upper die plate and the side edge of the seesaw.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a large-scale product corner stamping forming die. Background Technology

[0002] Large stamping and bending dies are indispensable tools in the manufacturing industry, especially in automobile manufacturing, electronic product production, and other industries that require high-precision metal processing. They enable stamping and bending operations on large sheet metal. However, traditional bending and stamping dies are prone to causing scratches on the sides of the sheet metal during use, resulting in a decline in sheet metal quality.

[0003] To overcome the aforementioned shortcomings, existing technology (Chinese Patent Publication No. CN211670414U, Publication Date: 2020-10-23) provides a multi-bending stamping die for repeatedly bending terminals. The terminals are mounted on a strip of material. The stamping die, from top to bottom, includes a top plate, an upper template, a lower template, and a bottom plate. An upper forming block is mounted on the upper template, and a lower forming block is mounted on the lower template. The upper and lower forming blocks work together to bend the terminals. A pressure plate is fixed on the lower template, forming a channel between the pressure plate and the lower template for the strip to pass through. By using the die to continuously bend the terminals multiple times, consistent bending degree is ensured, resulting in good bending effect, low rework rate, guaranteed processing quality in subsequent processes, reduced costs, improved bending position accuracy, and guaranteed product quality.

[0004] The aforementioned mechanism controls the bending angle by repeatedly bending the workpiece using a mold. However, in actual use, repeated bending can lead to low processing efficiency, which in turn results in low subsequent production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a large-scale product corner stamping forming die to solve the problems mentioned in the background art, such as the easy occurrence of scratches on the side of the sheet metal and the springback of the sheet metal bending angle during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a large product corner stamping forming die, comprising a lower support plate, a lower pad block mounted on the top of the lower support plate via a lower support column, a lower die base mounted on the top of the lower pad block, a lower clamping plate mounted on the top of the lower die base, an upper die base mounted above the lower clamping plate, and an upper pad plate mounted at the bottom of the upper die base; a lower ejector plate is provided inside the lower clamping plate, and auxiliary bending mechanisms for stamping the workpiece are provided on both sides of the lower ejector plate, the auxiliary bending mechanism comprising positioning blocks, the positioning blocks being disposed on both sides of the lower ejector plate, a seesaw being rotatably connected to the side of the positioning blocks, and an upper template being provided above the lower ejector plate; suction cups are installed at the four corners of the bottom of the lower support plate, and an installation mechanism for limiting the stamping die is provided at the upper end of the suction cups.

[0007] Furthermore, a telescopic rod is provided at the upper end of the upper template, and the bottom end of the telescopic rod is in contact with the upper end of the upper template.

[0008] Furthermore, a limiting rod is provided on the side of the upper template, and the limiting rod and the upper mold base are slidably connected.

[0009] Furthermore, both ends of the seesaw are wound with torsion springs, and the torsion springs are symmetrical about the vertical central axis of the seesaw.

[0010] Furthermore, the installation mechanism includes a pressing plate, which is disposed at the upper end of the lower support plate, and the bottom end of the pressing plate extends into the interior of the suction cup through a piston rod. A sealing gasket is sleeved on the outside of the piston rod at the top of the lower support plate, and a buffer spring is wound around the outside of the piston rod.

[0011] Furthermore, cams are installed at both ends of the seesaw via a belt pulley transmission mechanism, and a fixing block is installed at the top of the lower support plate. A pressing plate is engaged with the right side of the fixing block. A pushing block is installed on one side of the pressing plate through the fixing block, and a return spring is wound around the outside of the pressing plate.

[0012] Furthermore, the cross-section of the push block is a right-angled trapezoid, and the side of the push block is in contact with the side of the pressing plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By moving the upper template outward and downward simultaneously, the upper template can press the side of the seesaw, causing the seesaw angle to deflect. The side of the seesaw fits into the side of the positioning block. The workpiece to be processed is punched when the upper template moves downward. The outer side of the workpiece fits into the inner side of the seesaw, and the inner side of the workpiece fits into the outer side of the upper template. The space between the upper template and the side of the seesaw can be used to punch and bend the workpiece.

[0015] Furthermore, when using an auxiliary bending mechanism to bend a workpiece, it can effectively prevent scratches and pressure marks on the outer surface of the workpiece, minimize the rebound of the bending angle, and also avoid warping and deformation during rapid turns of excessively long bends.

[0016] Furthermore, torsion springs are wound around both ends of the seesaw, so that when the upper template is reset, the seesaw will automatically reset its angle through the elastic force of the torsion springs, increasing its applicability during use.

[0017] 2. The extrusion plate passes through and pushes the pusher block to one side. The side of the pusher block fits against the pressing plate. After the pusher block is pushed, the pressing plate moves downward. The bottom of the pressing plate moves downward and pushes the piston rod inside the suction cup. When the cam resets, the piston rod inside the suction cup resets simultaneously and draws out the air from the lower end of the suction cup, so that the suction cup can always maintain adsorption and fixation in use.

[0018] Furthermore, the cross-section of the push block is a right trapezoid, which allows the push block to press the pressing plate downward along the angle of its side when it is pushed, thereby enabling the pressing plate to move up and down continuously and extract the air from inside the suction cup. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention in the mold-open state.

[0020] Figure 2 This is a schematic diagram of the auxiliary bending mechanism of this utility model.

[0021] Figure 3 This is a schematic diagram of the auxiliary bending mechanism and the installation mechanism of this utility model.

[0022] Figure 4 This is a schematic diagram of the installation mechanism of this utility model.

[0023] Figure 5 This is a cross-sectional structural diagram of the installation mechanism of this utility model.

[0024] Figure 6 This is a front view structural diagram of the present invention in the closed mold state.

[0025] In the diagram: 1. Lower support plate; 2. Lower support column; 3. Lower pad block; 4. Lower mold base; 5. Lower clamping plate; 6. Lower ejector plate; 7. Upper mold base; 8. Telescopic rod; 9. Upper template; 10. Limiting rod; 11. Seesaw; 12. Torsion spring; 13. Positioning block; 14. Pushing block; 15. Upper pad plate; 16. Suction cup; 17. Buffer spring; 18. Sealing gasket; 19. Pressing plate; 20. Reset spring; 21. Extrusion plate; 22. Cam; 23. Fixing block. Detailed Implementation

[0026] 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.

[0027] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 6 The technical solution shown addresses the problems of scratches on the sides of sheet metal and springback caused by small bending angles in traditional bending and stamping forming dies. This large-product corner stamping forming die discloses an auxiliary bending mechanism, including a lower support plate 1. A lower pad 3 is mounted on the top of the lower support plate 1 via a lower support column 2. A lower die base 4 is mounted on the top of the lower pad 3. A lower clamping plate 5 is mounted on the top of the lower die base 4. An upper die base 7 is mounted above the lower clamping plate 5, and an upper pad 15 is mounted at the bottom of the upper die base 7. A lower ejector plate 6 is located inside the lower clamping plate 5, and the lower ejector plate 6 has supports on both sides. An auxiliary bending mechanism for stamping workpieces includes a positioning block 13, which is located on both sides of the lower ejector plate 6. A seesaw 11 is rotatably connected to the side of the positioning block 13. An upper template 9 is located above the lower ejector plate 6. A telescopic rod 8 is located at the upper end of the upper template 9, and the bottom end of the telescopic rod 8 is in contact with the upper end of the upper template 9. A limit rod 10 is located on the side of the upper template 9, and the limit rod 10 is slidably connected to the upper die base 7. Torsion springs 12 are wound around both ends of the seesaw 11, and the torsion springs 12 are symmetrical about the vertical central axis of the seesaw 11.

[0028] In this example, the workpiece to be processed is placed above the lower ejector plate 6 and the seesaw 11. The upper mold base 7 moves downward, while the output end of the telescopic rod 8 pushes the upper template 9 outward, thus creating a sliding connection between the limiting rod 10 and the upper mold base 7. As the upper template 9 moves outward, and the upper mold base 7 moves downward as a whole, the upper template 9 moves downward simultaneously, pressing down on the side of the seesaw 11. This causes the seesaw 11 to deflect, and the side of the seesaw 11 comes into contact with the side of the positioning block 13. The workpiece to be processed is pressed down on the upper template 9 as it moves downward. The outer side of the workpiece is in contact with the inner side of the seesaw 11, while the inner side of the workpiece is in contact with the outer side of the upper template 9. The space between the upper template 9 and the side of the seesaw 11 allows for stamping and bending of the workpiece. When bending the workpiece using the auxiliary bending mechanism, it can effectively prevent scratches and pressure damage to the outer surface of the workpiece, minimize the rebound of the bending angle, and avoid the occurrence of warping deformation during rapid turning of excessively long bends. At the same time, torsion springs 12 are wound around both ends of the seesaw 11, so that when the upper template 9 is reset, the seesaw 11 will automatically achieve angle reset through the elastic force of the torsion springs 12, increasing its applicability during use.

[0029] Example 2: Figure 1 , Figure 3 , Figure 4 and Figure 5 The technical solution shown addresses the problem of mold displacement caused by repeated stamping during use: This large product corner stamping mold discloses an installation mechanism. Suction cups 16 are installed at the four corners of the bottom of the lower support plate 1, and the upper end of the suction cups 16 is equipped with an installation mechanism for limiting the stamping mold. The installation mechanism includes a pressing plate 19, which is located at the upper end of the lower support plate 1. The bottom end of the pressing plate 19 extends into the suction cups 16 via a piston rod. A sealing gasket 18 is fitted on the outside of the piston rod at the top, and a buffer spring 17 is wound around the outside of the piston rod; cams 22 are installed at both ends of the seesaw 11 through a belt pulley transmission mechanism, and a fixing block 23 is installed at the top of the lower support plate 1, and a pressing plate 21 is engaged with the right side of the fixing block 23. One side of the pressing plate 21 passes through the fixing block 23 and is fitted with a push block 14, and a return spring 20 is wound around the outside of the pressing plate 21; the cross-section of the push block 14 is a right trapezoid, and the side of the push block 14 is in contact with the side of the pressing plate 19.

[0030] In this example, the seesaw 11 will deflect due to the pressure of the upper template 9. A belt pulley transmission mechanism connects the cam 22 to the seesaw 11, causing the cam 22 to deflect synchronously as the seesaw 11 deflects. After rotation, the cam 22 presses against the pressing plate 21, causing the return spring 20 to be stressed and shortened. The pressing plate 21 passes through and pushes the push block 14 to one side. The side of the push block 14 is in contact with the pressing plate 19. Pushing the push block 14 causes the pressing plate 19 to move downwards. When the bottom end of 19 moves downward and pushes the piston rod inside the suction cup 16, and the cam 22 resets, the piston rod inside the suction cup 16 resets simultaneously and extracts the air from the lower end of the suction cup 16, so that the suction cup 16 can always maintain adsorption and fixation in the use state, increasing the stability during use; the cross-section of the push block 14 is a right trapezoid, so that when the push block 14 is pushed, it can press the pressing plate 19 downward along the angle of the side of the push block 14, so that the pressing plate 19 can move up and down continuously to extract the air from inside the suction cup 16.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large product corner stamping forming mold, comprising a lower support plate (1), wherein a lower pad block (3) is installed on the top of the lower support plate (1) via a lower support column (2), and a lower mold base (4) is provided on the top of the lower pad block (3), a lower clamping plate (5) is installed on the top of the lower mold base (4), and an upper mold base (7) is provided above the lower clamping plate (5), and an upper pad plate (15) is provided at the bottom of the upper mold base (7); Its features are: The lower clamping plate (5) is provided with a lower stripping plate (6) inside, and the lower stripping plate (6) is provided with auxiliary bending mechanisms for stamping the workpiece on both sides. The auxiliary bending mechanism includes a positioning block (13), and the positioning block (13) is provided on both sides of the lower stripping plate (6). The side of the positioning block (13) is rotatably connected to a seesaw (11). The upper template (9) is provided above the lower stripping plate (6). The lower support plate (1) has suction cups (16) installed at the four corners of its bottom end, and the upper end of the suction cups (16) is provided with an installation mechanism for limiting the stamping die.

2. The corner stamping die for large products according to claim 1, characterized in that: The upper end of the upper template (9) is provided with a telescopic rod (8), and the bottom end of the telescopic rod (8) is in contact with the upper end of the upper template (9).

3. The corner stamping die for large products according to claim 2, characterized in that: The upper template (9) is provided with a limiting rod (10) on its side, and the limiting rod (10) and the upper mold base (7) are connected in a sliding manner.

4. A large product corner stamping die according to claim 3, characterized in that: Both ends of the seesaw (11) are wound with torsion springs (12), and the torsion springs (12) are symmetrical about the vertical central axis of the seesaw (11).

5. A large product corner stamping die according to claim 1, characterized in that: The installation mechanism includes a pressing plate (19), which is located at the upper end of the lower support plate (1). The bottom end of the pressing plate (19) extends into the suction cup (16) through a piston rod. A sealing gasket (18) is sleeved on the piston rod at the top of the lower support plate (1), and a buffer spring (17) is wound around the piston rod.

6. A large product corner stamping die according to claim 5, characterized in that: The two ends of the seesaw (11) are equipped with cams (22) through a belt pulley transmission mechanism, and a fixing block (23) is installed at the top of the lower support plate (1). A pressing plate (21) is engaged with the right side of the fixing block (23). A pushing block (14) is installed on one side of the pressing plate (21) through the fixing block (23), and a return spring (20) is wound around the outside of the pressing plate (21).

7. A large product corner stamping die according to claim 6, characterized in that: The cross-section of the push block (14) is a right trapezoid, and the side of the push block (14) is in contact with the side of the pressing plate (19).

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