High-precision stamping die and method

Abstract

The invention relates to a die, in particular to a high-precision stamping die and method, and the method comprises the following steps: step 1, stamping a plurality of stamping parts in linear array distribution on a metal plate to obtain an integrated stamping part; secondly, the protruding stamping part faces upwards, the plate faces downwards, and the protruding stamping part and the plate are horizontally conveyed to the position below a cutting cylinder; thirdly, the part, located below the cutting cylinder, of the integrated stamping part is suspended; and fourthly, after the integrated stamping part is corrected, the precision is improved, and the integrated stamping part is stamped through a cutting cylinder so that the protruding stamping part can be separated from the metal plate.

Description

TECHNICAL FIELD

[0001] The present application relates to a mold, more particularly to a high-precision stamping die and method. BACKGROUND

[0002] Stamping is a common metal processing method, which plastically deforms a metal plate into a desired shape by applying pressure. According to the requirements, the metal plate can be cut off after stamping out the shape by applying sufficient pressure, or it can be stamped and cut off in one stroke if the shape is simple. When the requirements change, it is difficult to use one device for one-step stamping and step-by-step stamping and cutting, the precision changes, and the number of steps for separating the stamped parts increases, resulting in increased costs. SUMMARY

[0003] The present application provides a high-precision stamping die and method, which can improve the precision of separating the stamped parts.

[0004] The above-mentioned object is achieved by the following technical solutions:

[0005] The stamping method of the high-precision stamping die comprises the following steps:

[0006] Step one, stamping a plurality of linear array distributed stamping parts on a metal plate to obtain an integrated stamping part;

[0007] Step two, the convex stamping part faces up, the plate faces down and is horizontally conveyed to the lower side of the cutting cylinder;

[0008] Step three, the local part of the integrated stamping part located below the cutting cylinder is suspended;

[0009] Step four, after correcting the integrated stamping part to improve the precision, the integrated stamping part is stamped by the cutting cylinder to make the convex stamping part separate from the metal plate.

[0010] A high-precision stamping device is used to achieve this, which comprises a base frame, the upper end of the base frame is fixedly connected with a rack I, the upper end of the rack I is fixedly connected with a telescopic cylinder, a table plate is arranged above the base frame, a guide column is fixedly connected to each corner of the lower end of the table plate, the guide column is slidingly connected to the base frame, a limiting part is arranged at the lower end of the guide column, a compression spring is sleeved on the guide column, the two ends of the compression spring are respectively abutted with the base frame and the table plate, and the telescopic end of the telescopic cylinder can push the table plate downward from top to bottom.

[0011] The right end of the base frame is fixedly connected with a base, the base is fixedly connected with a rack II, the rack II is fixedly connected with a hydraulic cylinder, the telescopic end of the hydraulic cylinder is downwardly arranged, the telescopic end of the hydraulic cylinder is fixedly connected with a cutting cylinder and a cutting knife, the cutting knife is located on the left side of the cutting cylinder, and the cutting knife is lower than the cutting cylinder.

[0012] It also includes a stamping die, including a column, the lower end of which is provided with a keyway, a column above which is provided, a round opening on the base, a protruding key fixedly connected to the base within the round opening, the keyway being slidably connected to the protruding key, and the column being slidably connected within the round opening; the column is located directly below the cutting cylinder and is located on the inner side of the inner wall of the cutting cylinder.

[0013] The base is made of cast concrete.

[0014] The telescopic cylinder is an electric cylinder.

[0015] A column sleeve I is fixed to the upper end of the column. At least two horizontal columns are evenly fixed to the circumference of the column sleeve I. The number of vertical columns is equal to that of the horizontal columns. A vertical column is slidably connected to each horizontal column. A fastener is screwed into the vertical column by a thread. The fastener can be pre-tightened on the horizontal column. The outer rings of all the vertical columns are tangent to a virtual circle. The pre-tightening member is located inside the virtual circle.

[0016] A connecting rod is fixed to the telescopic end of the telescopic cylinder.

[0017] The lower end of the connecting rod is fixed with a pressure part, which is used to increase the contact surface with the platform.

[0018] A column sleeve II located on the right side of the cutting cylinder is fixedly connected to the base. A push column is slidably connected inside the column sleeve II. A vertical window is provided on the column sleeve II. A transmission rod is fixedly connected to the lower end of the push column. The transmission rod is slidably connected inside the window. A motor located on the right side of the push column is fixedly connected to the base. One end of a connecting rod is fixedly connected to the output shaft of the motor. The other end of the connecting rod is rotatably connected to a lever. The lever can press down the transmission rod once by rotating around the output shaft of the motor.

[0019] The column has a groove.

[0020] The stamping die also includes a column, the lower end of which is provided with a keyway, and a vertical column is provided above the column. A circular opening is provided on the base, and a protruding key located in the circular opening is fixedly connected to the base. The keyway is slidably connected to the protruding key, and the column is slidably connected to the circular opening. The vertical column is located directly below the cutting cylinder and is located on the inner side of the inner wall of the cutting cylinder.

[0021] The upper end of the column is fixedly connected to the column sleeve I. At least two horizontal columns are evenly fixedly connected to the circumference of the column sleeve I. The number of vertical columns and horizontal columns is equal. Each horizontal column is slidably connected to a vertical column. A fastener is screwed into the vertical column by a thread. The fastener can be pre-tightened on the horizontal column. The outer rings of all the vertical columns are tangent to a virtual circle. The pre-tightening member is located inside the virtual circle.

[0022] The upper end of the column sleeve I is provided with an internal hexagonal groove, into which a plug is inserted. The plug and the column sleeve I are positioned by a pin. The upper end of the plug is fixed with a mounting plate, and the lower end face of the mounting plate is in contact with the upper end face of the column. Attached Figure Description

[0023] Figure 1 A flowchart of the stamping method for high-precision stamping dies;

[0024] Figure 2 Side view of a high-precision stamping device;

[0025] Figure 3 This is a front view of a high-precision stamping device.

[0026] Figure 4 This is a structural diagram of the base frame, frame I, telescopic cylinder, connecting rod, pressure section, base, keyway, and frame II;

[0027] Figure 5 This is a structural diagram of the guide pillars and the platform.

[0028] Figure 6 A schematic diagram of the hydraulic cylinder, cutting cylinder, and cutting blade;

[0029] Figure 7 This is a schematic diagram of the stamping die structure;

[0030] Figure 8 This is a structural diagram of column sleeve I and the horizontal column;

[0031] Figure 9 This is a structural diagram of the column sleeve II, push column, transmission rod, motor, connecting rod, and lever;

[0032] Figure 10 This is a structural diagram of the insert and mounting plate. Detailed Implementation

[0033] The stamping method for high-precision stamping dies includes the following steps:

[0034] Step 1: Stamp multiple linearly arrayed stamped parts on a metal sheet to obtain an integral stamped part, with the stamped parts protruding relative to the metal sheet.

[0035] Step two is achieved using a high-precision stamping device, see reference. Figures 1 to 3 It includes a base frame 11, with a frame I 12 fixedly connected to the left and right sides of the upper end of the base frame 11. A telescopic cylinder 13 is fixedly connected to the front and rear sides of the upper end of each frame I 12. The telescopic end of the telescopic cylinder 13 is set downwards, and the movable end of the telescopic cylinder 13 passes through the corresponding frame I 12 from top to bottom.

[0036] Furthermore, in combination Figure 4A platform 22 is provided above the base frame 11. The upper end surface of the platform 22 is a horizontal end surface and is polished to reduce the coefficient of friction. Lubricating material can be applied to the upper end of the platform 22. A guide post 21 is fixed to each of the four corners of the lower end of the platform 22. The guide post 21 is slidably connected to the base frame 11. Four telescopic cylinders 13 are located directly above the four guide posts 21. The lower end of the guide post 21 is provided with a limit part. A compression spring is sleeved on the guide post 21. The two ends of the compression spring abut against the base frame 11 and the platform 22 respectively. The telescopic end of the telescopic cylinder 13 can push the platform 22 downward from top to bottom.

[0037] The telescopic cylinder 13 is preferably an electric cylinder.

[0038] Step 3: The table 22 is used to support the integral stamping part, so that the integral stamping part moves to the right and the rightmost stamping part is suspended in the air. At the same time, the protruding stamping part faces upward and the sheet metal faces downward. The suspended stamping part is located directly below the cutting cylinder 32.

[0039] Step 4: Combining Figure 5 The device also includes a base 16 fixed to the right end of the base frame 11. A frame II 18 is fixed to the base 16. A hydraulic cylinder 31 is fixed to the frame II 18. The telescopic end of the hydraulic cylinder 31 is set downward. The telescopic end of the hydraulic cylinder 31 passes through the frame II 18 from top to bottom. A cutting cylinder 32 is detachably fixed to the telescopic end of the hydraulic cylinder 31. A cutting blade 33 is fixed to the left end of the cutting cylinder 32. The cutting blade 33 is lower than the cutting cylinder 32. The distance between the cutting blade 33 and the cutting cylinder 32 is not less than the thickness of the metal plate. The distance is preferably slightly greater than the thickness of the metal plate by 1 mm.

[0040] The base 16 is made of cast concrete;

[0041] Furthermore, in combination Figure 6 It also includes a stamping die, including a column 41, a keyway 42 at the lower end of the column 41, a column 46 above the column 41, a round opening on the base 16, a protruding key 17 fixedly connected to the base 16 within the round opening, the keyway 42 slidably connected to the protruding key 17, and the column 41 slidably connected within the round opening; the column 46 is located directly below the cutting cylinder 32 and is located on the inner side of the inner wall of the cutting cylinder 32;

[0042] The device also includes a column sleeve II 51 fixedly connected to the base 16 and located on the right side of the cutting cylinder 32. A push column 52 is slidably connected inside the column sleeve II 51. The column sleeve II 51 is provided with a vertical window. A compression spring II is provided inside the column sleeve II 51. The two ends of the compression spring II are fixedly connected to the bottom of the column sleeve II 51 and the bottom of the push column 52, respectively. A transmission rod 53 is fixedly connected to the lower end of the push column 52. The transmission rod 53 is slidably connected inside the window. A motor 61 located on the right side of the push column 52 is fixedly connected to the base 16. One end of a connecting rod 62 is fixedly connected to the output shaft of the motor 61. The other end of the connecting rod 62 is rotatably connected to a lever 63. The lever 63 can press down the transmission rod 53 once by rotating around the output shaft of the motor 61, so that the push column 52 drops. The push column 52 is reset by elastic force.

[0043] Because the column 46 is lower than the table 22, the push column 52 can straighten the right end of the suspended metal plate after resetting, so that the metal plate on the table 22 and the suspended metal plate are horizontal, thus avoiding the change of the cutting position during stamping and cutting, which would lead to stamping failure.

[0044] After straightening the integral stamping part, the telescopic cylinder 13 extends the lower pressure plate 22, and the lever 63 also presses down the transmission rod 53, causing the push column 52 to descend. At this time, the metal sheet as a whole descends and approaches the column 46. Meanwhile, the hydraulic cylinder 31 is also activated to use the cutting cylinder 32 to descend and stamp the integral stamping part. The cutter 33 first cuts the suspended metal sheet to separate the suspended part from the integral stamping part. At this time, the separated part is supported by the column 46. The cutting cylinder 32 descends further so that the protruding stamping part is located inside the cutting cylinder 32. The lower edge of the cutting cylinder 32 cuts the metal sheet, thereby separating the stamping part from the suspended metal sheet. Repeating the above steps can obtain multiple stamping parts.

[0045] The stamping die is cylindrical in shape. When the suspended metal plate descends, the separation of the stamping parts forms an opening, which fits onto the column 41 of the stamping die and accumulates next to the column 41. After processing is completed, the column 41 is removed from the keyway 42, and the stacked metal plate can be taken away.

[0046] Preferably, a column sleeve I 44 is fixedly connected to the upper end of the column 41, and at least two horizontal columns 45 are uniformly fixed to the circumference of the column sleeve I 44. The number of upright columns 46 is equal to that of the horizontal columns 45. Each horizontal column 45 is slidably connected to an upright column 46. A fastener is screwed into the upright column 46 by threads. The fastener can be pre-tightened on the horizontal column 45. The outer rings of all the upright columns 46 are tangent to a virtual circle, and the pre-tightening member is located inside the virtual circle. This allows the spacing of the upright columns 46 to be adjusted to accommodate stamping parts of different diameters.

[0047] Preferably, the column 46 is provided with a groove 43 to serve as a handle;

[0048] In the preferred embodiment of the stamping die, the upper end of the sleeve I 44 is provided with an internal hexagonal groove, and a pin 71 is inserted into the internal hexagonal groove. The pin 71 and the sleeve I 44 are positioned by a pin. The upper end of the pin 71 is fixedly connected to a mounting plate 72. The lower end face of the mounting plate 72 is in contact with the upper end face of the column 46. The upper end of the mounting plate 72 can be fixedly connected to a lower die of different structures by bolts. The lower end of the telescopic end of the hydraulic cylinder 31 can be fixedly connected to an upper die of different shapes, thereby setting the stamping part on the lower die. The stamping part can be stamped again by lowering the upper die, realizing the unification of simple stamping and complex die stamping.

Claims

1. A stamping method for high-precision stamping dies, characterized in that, Includes the following steps: Step 1: Stamp multiple linearly arrayed stamping parts on a metal sheet to obtain an integral stamping part; Step 2: With the protruding stamped part facing upwards and the sheet metal facing downwards, transport it horizontally to the bottom of the cutting cylinder (32); Step 3: The integral stamped part located below the cutting cylinder (32) is partially suspended; Step 4: After straightening the integral stamping part, use the cutting cylinder (32) to press the integral stamping part so that the protruding stamping part is separated from the metal sheet.

2. The high-precision stamping die stamping method according to claim 1 is implemented using a high-precision stamping device, including a base frame (11), a frame I (12) fixedly connected to the upper end of the base frame (11), a telescopic cylinder (13) fixedly connected to the upper end of the frame I (12), a platform (22) provided above the base frame (11), a guide post (21) fixedly connected to each of the four corners of the lower end of the platform (22), the guide post (21) is slidably connected to the base frame (11), a limit part is provided at the lower end of the guide post (21), a compression spring is sleeved on the guide post (21), the two ends of the compression spring abut against the base frame (11) and the platform (22) respectively, and the telescopic end of the telescopic cylinder (13) can push the platform (22) downward from top to bottom; A base (16) is fixed to the right end of the base frame (11), and a frame II (18) is fixed to the base (16). A hydraulic cylinder (31) is fixed to the frame II (18). The telescopic end of the hydraulic cylinder (31) is set downward. A cutting cylinder (32) and a cutter (33) are fixed to the telescopic end of the hydraulic cylinder (31). The cutter (33) is located to the left of the cutting cylinder (32) and is lower than the cutting cylinder (32). It also includes a stamping die, including a column (41), a keyway (42) at the lower end of the column (41), a column (46) above the column (41), a round opening on the base (16), a protruding key (17) fixedly connected to the base (16) within the round opening, the keyway (42) being slidably connected to the protruding key (17), and the column (41) being slidably connected within the round opening; the column (46) is located directly below the cutting cylinder (32), and the column (46) is located on the inner side of the inner wall of the cutting cylinder (32).

3. The stamping method of the high-precision stamping die according to claim 2, wherein the base (16) is made of concrete.

4. The stamping method of the high-precision stamping die according to claim 2, wherein the telescopic cylinder (13) is an electric cylinder.

5. The stamping method of the high-precision stamping die according to claim 2, wherein a column sleeve I (44) is fixedly connected to the upper end of the column (41), and at least two horizontal columns (45) are uniformly fixedly connected to the circumference of the column sleeve I (44). The number of vertical columns (46) is equal to that of the horizontal columns (45). A vertical column (46) is slidably connected to each horizontal column (45). A fastener is screwed into the vertical column (46) by a thread. The fastener can be pre-tightened on the horizontal column (45). The outer rings of all vertical columns (46) are tangent to a virtual circle. The pre-tightening member is located inside the virtual circle.

6. In the stamping method of the high-precision stamping die according to claim 2, a connecting rod (14) is fixedly connected to the telescopic end of the telescopic cylinder (13).

7. The stamping method of the high-precision stamping die according to claim 6, wherein the lower end of the connecting rod (14) is fixedly connected to a pressing part (15), and the pressing part (15) is used to increase the contact surface with the table plate (22).

8. The stamping method of the high-precision stamping die according to claim 2, wherein a column sleeve II (51) located on the right side of the cutting cylinder (32) is fixedly connected to the base (16), a push column (52) is slidably connected inside the column sleeve II (51), a vertical window is provided on the column sleeve II (51), a transmission rod (53) is fixedly connected to the lower end of the push column (52), the transmission rod (53) is slidably connected inside the window, a motor (61) located on the right side of the push column (52) is fixedly connected to the base (16), one end of a connecting rod (62) is fixedly connected to the output shaft of the motor (61), and a lever (63) is rotatably connected to the other end of the connecting rod (62). The lever (63) can press down the transmission rod (53) once by rotating around the output shaft of the motor (61) for one revolution.

9. The stamping method of the high-precision stamping die according to claim 2, wherein the column (46) is provided with a groove (43).

10. A stamping die used in the stamping method of claim 9 includes a column (41), a keyway (42) at the lower end of the column (41), a column (46) above the column (41), a round opening on the base (16), a protruding key (17) fixedly connected to the base (16) within the round opening, the keyway (42) being slidably connected to the protruding key (17), and the column (41) being slidably connected within the round opening; the column (46) is located directly below the cutting cylinder (32), and the column (46) is located on the inner side of the inner wall of the cutting cylinder (32); A column sleeve I (44) is fixedly connected to the upper end of the column (41). At least two horizontal columns (45) are uniformly fixed to the circumference of the column sleeve I (44). The number of vertical columns (46) is equal to that of the horizontal columns (45). A vertical column (46) is slidably connected to each horizontal column (45). A fastener is screwed into the vertical column (46) by a thread. The fastener can be pre-tightened on the horizontal column (45). The outer rings of all vertical columns (46) are tangent to a virtual circle. The pre-tightening member is located inside the virtual circle. The upper end of the column sleeve I (44) is provided with an internal hexagonal groove, and a plug (71) is inserted into the internal hexagonal groove. The plug (71) and the column sleeve I (44) are positioned by a pin. The upper end of the plug (71) is fixedly connected to the mounting plate (72), and the lower end face of the mounting plate (72) is in contact with the upper end face of the column (46).

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