Stamping die based on compressed gas demolding and using method thereof

Abstract

The invention discloses a stamping die based on compressed gas demolding and a using method of the stamping die, and belongs to the technical field of stamping dies. A stamping die based on compressed gas demolding comprises an upper die and a lower die and further comprises a bottom plate arranged on the lower die, a machining table is arranged on the bottom plate, a shaping block is arranged on the bottom plate, the shaping block is arranged in the center of the machining table, an edge ring is arranged on the periphery of the shaping block, and the edge ring is arranged on the machining table. A pressing plate is arranged below the upper die, an outer sleeve is arranged on the lower surface of the center of the upper die, a pressing block is arranged in the outer sleeve, a movable hole is formed in the pressing plate, and the outer sleeve slides in the movable hole; the air blowing hole can be controlled to be opened and closed, it is guaranteed that the contour of the air blowing hole is not engraved on a formed part during stamping, and the yield of the formed part is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, and in particular to a stamping die based on compressed gas demoulding. Background Art

[0002] Stamping is a forming method that relies on a press and a die to apply external force to plates, strips, tubes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining a workpiece (stamping part) of the desired shape and size. Stamping usually consists of five steps: shaping, drawing, flanging, trimming and punching. The shaping die is mainly used to press the metal plate into the required shape. Shaping is often placed in the first step alone, and the speed of shaping is crucial to the entire stamping process.

[0003] During the shaping process of the shaping die, the stress of the upper stamping die makes the stamped part stick to the surface of the lower die, resulting in the phenomenon that the die cannot be demolded. In this case, after the stamping is completed, compressed gas is generally released into the lower die through a compressed gas system. These gases are discharged to the exhaust holes on the surface of the lower die through preset airways or pipes, exerting thrust on the molded part. Under the action of compressed gas, sufficient separation force is generated between the molded part and the die, so that the molded part can be smoothly removed from the die. However, the exhaust holes are generally always open, which may cause the molded part to be engraved with the outline, groove, and protrusion of the exhaust hole during stamping. Especially when the mold is not very flat, this problem often occurs, which is not conducive to the yield rate. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose a stamping die based on compressed gas demoulding.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: It includes an upper mold and a lower mold, and also includes: a bottom plate arranged on the lower mold, a processing table is arranged on the bottom plate, a shaping block is arranged on the bottom plate, the shaping block is placed in the center of the processing table, a side ring is arranged on the periphery of the shaping block, and the side ring is arranged on the processing table; a pressing plate is arranged below the upper mold, an outer sleeve is arranged on the lower surface of the center of the upper mold, a pressing block is arranged in the outer sleeve, a movable hole is opened on the pressing plate, and the outer sleeve slides in the movable hole; a blowing hole is opened in the center of the shaping block, a movable groove is opened below the blowing hole, a fixing plate is fixedly connected in the fixing groove, and a hole is opened at the center of the fixing plate, so that A sliding rod is provided in the movable groove, and the sliding rod passes through the hole at the center of the fixed plate. A circular pancake-shaped sliding block with a diameter consistent with the blowing hole is provided on the top of the sliding rod. A reset spring is provided between the sliding block and the fixed plate. The reset spring is sleeved on the sliding rod. A circular pancake-shaped baffle with a diameter consistent with the cylindrical movable groove is provided at the bottom end of the sliding rod, and the baffle is placed under the fixed plate; the movable groove is divided into two spaces by the fixed plate, the space above the fixed plate is the release space, and the space below the fixed plate is the control space, the release space and the control space are connected by jet pipe 1 and jet pipe 2, and the control space is connected to an external air source through airway 2.

[0006] Preferably, a force-bearing end is provided on the upper die, a pressure rod is provided below the force-bearing end, and the pressure rod is fixedly connected to the pressing block.

[0007] Preferably, a mounting hole and a retreat hole are respectively provided on the upper die, a sleeve is installed in the mounting hole, a fixing rod is fixedly connected to the bottom plate, and the upper end of the fixing rod slides in the sleeve.

[0008] Furthermore, a retreat rod is inserted into the retreat hole, the bottom of the retreat rod is threadedly connected to the pressing plate, a buffer spring is provided between the pressing plate and the upper die, and the buffer spring is sleeved on the retreat rod.

[0009] Preferably, a limiting groove is provided in the outer sleeve, and the pressing block is installed and fixed in the limiting groove.

[0010] Preferably, the processing table is provided with limiting bolts.

[0011] Preferably, an adjustment rod is provided below the edge ring, and the adjustment rod passes through the lower mold and the bottom plate. An air channel 1 is provided inside the lower mold and the bottom plate, and the air channel 1 is connected to the air channel 2.

[0012] Preferably, the release space placed above the fixed plate can be subdivided into two areas, namely a blowing area and a compression area. The blowing area and the compression area are divided by a slider. The area sizes of the blowing area and the compression area are variable. The blowing area is placed above the compression area.

[0013] Furthermore, when the blowing hole is not blowing air, the slider is flush with the shaping block, at which time the area size of the compression area reaches a maximum, and the area size of the blowing area is zero. When the blowing hole is blowing air, the slider moves downward, the area size of the blowing area reaches a maximum, and the area size of the compression area reaches a minimum.

[0014] Preferably, a method for using a stamping die based on compressed gas demoulding mainly comprises the following steps: S1, placing the workpiece to be processed on the shaping block; S2, the pressing plate and the pressing block are pressed downward to punch the workpiece; S3, the pressing plate and the pressing block are reset; S4, the first and second air jet pipes eject air through the air holes to eject the molded part.

[0015] Compared with the prior art, the present invention provides a stamping die based on compressed gas demoulding, which has the following beneficial effects: 1. The stamping die based on compressed gas demoulding makes the slider flush with the shaping block through the reset spring, and closes the bottom of the movable groove so that the baffle cannot move down during stamping, ensuring that the outline of the blowing hole will not be imprinted on the molded part during stamping, thereby ensuring the yield rate of the molded part.

[0016] 2. During demoulding, the stamping die based on compressed gas demoulding opens the bottom space of the movable groove, so that the external compressed gas can push the baffle downward, so that the slider moves to below the air outlets of the jet pipe 1 and the jet pipe 2, thereby ensuring that the blowing hole sprays compressed gas to the bottom of the molded part, thereby facilitating demoulding.

[0017] The parts not involved in the stamping die based on compressed gas demolding are the same as the existing technology or can be implemented by using the existing technology. The present invention controls the lifting and lowering of the slider by adjusting the baffle in the control space, and then controls the opening and closing of the blowing hole, thereby ensuring that the outline of the blowing hole will not be imprinted on the molded part during stamping, thereby ensuring the yield rate of the molded part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of a stamping die based on compressed gas demoulding proposed by the present invention is schematically shown. Figure 1 ; Figure 2 A front view of a stamping die based on compressed gas demoulding proposed by the present invention; Figure 3 Schematic diagram of the internal structure of a stamping die based on compressed gas demoulding proposed by the present invention Figure 1 ; Figure 4Schematic diagram of the internal structure of a stamping die based on compressed gas demoulding proposed by the present invention Figure 2 ; Figure 5 A stamping die based on compressed gas demoulding proposed by the present invention Figure 4 The enlarged structural diagram of part A in the middle; Figure 6 This is a schematic diagram of the structure inside a shaping block of a stamping die based on compressed gas demoulding proposed by the present invention; Figure 7 A stamping die based on compressed gas demoulding proposed by the present invention Figure 6 The enlarged structural diagram of part B in the middle; Figure 8 A schematic diagram of the structure inside the shaping block when a stamping die based on compressed gas demoulding proposed by the present invention is demoulded; Fig. 9 A stamping die based on compressed gas demoulding proposed by the present invention Figure 8 Schematic diagram of the enlarged structure of part C.

[0019] In the figure: 1. upper die; 101. mounting hole; 102. force-bearing end; 103. sleeve; 104. withdrawal hole; 2. lower die; 3. bottom plate; 301. processing table; 302. limiting bolt; 4. fixing rod; 5. shaping block; 6. withdrawal rod; 7. buffer spring; 8. outer sleeve; 9. adjusting rod; 10. blowing hole; 11. slider; 12. pressing plate; 13. limiting groove; 14. pressing block; 15. movable hole; 16. pressing rod; 17. airway one; 18. side ring; 19. airway two; 20. movable groove; 21. fixing plate; 22. sliding rod; 23. reset spring; 24. baffle; 25. jet pipe one; 26. jet pipe two. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] Reference Figure 1-Figure 9, including an upper mold 1 and a lower mold 2, and also including: a bottom plate 3 arranged on the lower mold 2, a processing table 301 is arranged on the bottom plate 3, a shaping block 5 is arranged on the bottom plate 3, the shaping block 5 is placed at the center of the processing table 301, and a side ring 18 is arranged on the periphery of the shaping block 5, and the side ring 18 is arranged on the processing table 301; a pressing plate 12 is arranged below the upper mold 1, an outer sleeve 8 is arranged on the lower surface of the center of the upper mold 1, a pressing block 14 is arranged in the outer sleeve 8, a movable hole 15 is opened on the pressing plate 12, and the outer sleeve 8 slides in the movable hole 15; a blowing hole 10 is opened in the center of the shaping block 5, a movable groove 20 is opened below the blowing hole 10, a fixed plate 21 is fixedly connected in the movable groove 20, and a hole is opened at the center of the fixed plate 21, and a movable hole 15 is opened in the pressing plate 12. A slide bar 22 is provided in the groove 20, and the slide bar 22 passes through the hole at the center of the fixed plate 21. A circular pancake-shaped slide bar 11 with a diameter consistent with the blowing hole 10 is provided at the top of the slide bar 22, and a return spring 23 is provided between the slide bar 11 and the fixed plate 21. The return spring 23 is sleeved on the slide bar 22, and a circular pancake-shaped baffle 24 with a diameter consistent with the cylindrical movable groove 20 is provided at the bottom end of the slide bar 22. The baffle 24 is placed under the fixed plate 21; the movable groove 20 is divided into two spaces by the fixed plate 21, the space above the fixed plate 21 is the release space, and the space below the fixed plate 21 is the control space, the release space and the control space are connected by jet pipe 1 25 and jet pipe 2 26, and the control space is connected to the external air source through airway 2 19.

[0023] In the present invention, after the workpiece to be processed is placed on the shaping block 5, the pressing plate 12 and the pressing block 14 are pressed down to punch the workpiece to be processed. The edge ring 18 is used to prevent the workpiece to be processed from running away and to limit the workpiece to be processed. After the punching is completed, the pressing plate 12 and the pressing block 14 are reset. At this time, the compressed gas enters the control space through the airway 2 19. Since the slider 11 is flush with the shaping block 5 in the initial state, the slider 11 blocks the air outlets of the jet pipe 1 25 and the jet pipe 2 26, and the compressed gas entering the control space cannot pass through the jet pipe 1 25 and the jet pipe 2 The compressed gas is discharged from the air pipe 1 26, and the high-pressure compressed gas pushes the baffle 24 downward in the control space, thereby driving the slider 11 downward until the slider 11 moves down to the point where it no longer blocks the air outlets of the air pipe 1 25 and the air pipe 2 26. At this time, the compressed gas in the control space is discharged to the blowing hole 10 through the air pipe 1 25 and the air pipe 2 26, and then sprayed on the bottom of the molded part, which can help it to be demolded quickly. During the downward movement of the slider 11, the slider 11 compresses the reset spring 23. When the air passage 19 no longer supplies air, the reset spring 23 controls the slider 11 to reset.

[0024] In one embodiment, the existing stamping die that uses compressed gas for demolding may cause the contour, groove, and protrusion of the vent hole to be engraved on the molded part during stamping due to the vent hole on the die for easy demolding. Especially when the die is not very flat, this problem often occurs, which is not conducive to the yield rate. In order to solve the above problems, a slider 11 is provided on the blowing hole 10 in the present invention. During stamping, the slider 11 is naturally flush with the shaping block 5 under the action of the return spring 23, thus blocking the gap of the blowing hole 10, and thus the contour, groove and protrusion of the blowing hole 10 will not be engraved on the molded part, thereby ensuring the processing yield rate, and during stamping, the plate below the baffle 24 is closed, and thus even if an external force is applied to the slider 11, the slider 11 will not move downward; After the processing is completed, demoulding is required, and the external compressed gas enters the control space through the air channel 19. The compressed gas in the control space cannot be discharged through the jet pipe 1 25 and the jet pipe 2 26. The high-pressure compressed gas pushes the baffle 24 downward in the control space, and then drives the slider 11 downward until the slider 11 moves down to no longer block the outlet of the jet pipe 1 25 and the jet pipe 2 26. At this time, the compressed gas in the control space is discharged to the blowing hole 10 through the jet pipe 1 25 and the jet pipe 2 26, and then sprayed on the bottom of the molded part, which can help it to be demoulded quickly, and the plate below the baffle 24 is open at this time; For the plates below baffle 24, please refer to Figure 7 In the embodiment, the opening and closing of the plate at the notch below the movable groove 20 can be controlled by an electric valve, which is a prior art and will not be described in detail here.

[0025] Reference Figure 1-Figure 9, including an upper mold 1 and a lower mold 2, and also including: a bottom plate 3 arranged on the lower mold 2, a processing table 301 is arranged on the bottom plate 3, a shaping block 5 is arranged on the bottom plate 3, the shaping block 5 is placed at the center of the processing table 301, and a side ring 18 is arranged on the periphery of the shaping block 5, and the side ring 18 is arranged on the processing table 301; a pressing plate 12 is arranged below the upper mold 1, an outer sleeve 8 is arranged on the lower surface of the center of the upper mold 1, a pressing block 14 is arranged in the outer sleeve 8, a movable hole 15 is opened on the pressing plate 12, and the outer sleeve 8 slides in the movable hole 15; a blowing hole 10 is opened in the center of the shaping block 5, a movable groove 20 is opened below the blowing hole 10, a fixed plate 21 is fixedly connected in the movable groove 20, and a hole is opened at the center of the fixed plate 21, and a movable hole 15 is opened in the pressing plate 12. A slide bar 22 is provided in the groove 20, and the slide bar 22 passes through the hole at the center of the fixed plate 21. A circular pancake-shaped slide bar 11 with a diameter consistent with the blowing hole 10 is provided at the top of the slide bar 22, and a return spring 23 is provided between the slide bar 11 and the fixed plate 21. The return spring 23 is sleeved on the slide bar 22, and a circular pancake-shaped baffle 24 with a diameter consistent with the cylindrical movable groove 20 is provided at the bottom end of the slide bar 22. The baffle 24 is placed under the fixed plate 21; the movable groove 20 is divided into two spaces by the fixed plate 21, the space above the fixed plate 21 is the release space, and the space below the fixed plate 21 is the control space, the release space and the control space are connected by jet pipe 1 25 and jet pipe 2 26, and the control space is connected to the external air source through airway 2 19.

[0026] Reference Figure 1-Figure 9 A force-bearing end 102 is provided on the upper die 1, and a pressure rod 16 is provided below the force-bearing end 102, and the pressure rod 16 is fixedly connected to the pressing block 14; a mounting hole 101 and a retreat hole 104 are respectively opened on the upper die 1, a sleeve 103 is installed in the mounting hole 101, a fixing rod 4 is fixedly connected to the bottom plate 3, and the upper end of the fixing rod 4 slides in the sleeve 103; a retreat rod 6 is inserted into the retreat hole 104, and the bottom of the retreat rod 6 is threadedly connected to the pressing plate 12, and a buffer spring 7 is provided between the pressing plate 12 and the upper die 1, and the buffer spring 7 is sleeved on the retreat rod 6.

[0027] In the present invention, the force-bearing end 102 itself can be a power source, or it can be an external power source, which is used to control the pressing rod 16 to press the pressing block 14. The power source is preferably a cylinder.

[0028] In one embodiment, the sleeve 103 and the fixing rod 4 cooperate to guide the pressing block 14 to punch the workpiece to be processed, ensuring that the pressing block 14 is pressed vertically and does not deviate; The buffer spring 7 is used to buffer the punching force of the pressing block 14 to ensure the molding yield rate of the workpiece to be processed. At the same time, during stamping, the pressing plate 12 can be moved up and the buffer spring 7 can be compressed at the same time. In this way, after the processing is completed, when the pressing block 14 is reset, the pressing plate 12 is reset under the push of the buffer spring 7. The reset pressing plate 12 will push the molded part, so as to help the molded part to detach when it may be stuck on the pressing block 14.

[0029] Reference Figure 1-Figure 9 A limiting groove 13 is provided in the outer sleeve 8, and the pressing block 14 is installed and fixed in the limiting groove 13; a limiting bolt 302 is provided on the processing table 301; an adjusting rod 9 is provided below the edge ring 18, and the adjusting rod 9 passes through the lower mold 2 and the bottom plate 3, and an air channel 1 17 is provided in the lower mold 2 and the bottom plate 3, and the air channel 1 17 is connected with the air channel 2 19.

[0030] In the present invention, the pressing block 14 can be fixed by the limiting groove 13, and the limiting bolt 302 can limit and fix the shaping block 5 and the edge ring 18; The height of the edge ring 18 can be adjusted by adjusting the rod 9, and then the shape of the molded part can be adjusted to a certain extent. At the same time, the edge ring 18 can prevent the workpiece from running away or shifting during stamping. Airway 17 is connected to an external compressed air source and discharges the compressed gas into airway 2 19.

[0031] Reference Figure 1-Figure 9 The release space above the fixed plate 21 can be subdivided into two areas, namely, a blowing area and a compression area. The blowing area and the compression area are divided by a slider 11. The size of the blowing area and the compression area is variable. The blowing area is placed above the compression area. When the blowing hole 10 is not blowing air, the slider 11 is flush with the shaping block 5. At this time, the size of the compression area reaches the maximum, and the size of the blowing area is zero. When the blowing hole 10 is blowing air, the slider 11 moves downward, the size of the blowing area reaches the maximum, and the size of the compression area reaches the minimum.

[0032] In the present invention, during stamping, the slider 11 is naturally flush with the shaping block 5 under the action of the return spring 23, and the blowing area is zero at this time; After the processing is completed, demolding is required, and the external compressed gas enters the control space through air channel 1 17 and air channel 2 19 in turn. Since the slider 11 is flush with the shaping block 5, the slider 11 blocks the air outlets of the jet pipe 1 25 and the jet pipe 2 26, and the compressed gas entering the control space cannot be discharged through the jet pipe 1 25 and the jet pipe 2 26. The high-pressure compressed gas pushes the baffle 24 downward in the control space, and then drives the slider 11 downward until the slider 11 moves down to no longer block the air outlets of the jet pipe 1 25 and the jet pipe 2 26. At this time, the high-pressure compressed gas in the control space is released, and the baffle 24 no longer moves downward. The released compressed gas helps the molded part to be demolded through the blowing hole 10.

[0033] Furthermore, a plurality of the air jet pipe 1 25 and the air jet pipe 2 26 may be provided.

[0034] Reference Figure 1-Figure 9 In the present invention, a method for using a stamping die based on compressed gas demoulding mainly comprises the following steps: S1, placing the workpiece to be processed on the shaping block 5; S2, the pressing plate 12 and the pressing block 14 are pressed downward to punch the workpiece; S3, the pressing plate 12 and the pressing block 14 are reset; S4, the air jet pipe 1 25 and the air jet pipe 2 26 eject air through the air blowing hole 10 to eject the molded part.

[0035] In the present invention, by adjusting the baffle 24 in the control space, the slider 11 is controlled to rise and fall, and then the opening and closing of the blowing hole 10 is controlled, ensuring that the outline of the blowing hole 10 will not be imprinted on the molded part during stamping, thereby ensuring the yield rate of the molded part.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stamping die based on compressed gas demoulding, comprising an upper die (1) and a lower die (2), characterized in that: Also includes: A bottom plate (3) is arranged on the lower mold (2), a processing table (301) is arranged on the bottom plate (3), a shaping block (5) is arranged on the bottom plate (3), the shaping block (5) is placed at the center of the processing table (301), a rim (18) is arranged on the periphery of the shaping block (5), and the rim (18) is arranged on the processing table (301); A pressing plate (12) is provided below the upper mold (1), an outer sleeve (8) is provided on the lower surface of the central part of the upper mold (1), a material pressing block (14) is provided inside the outer sleeve (8), a movable hole (15) is opened on the pressing plate (12), and the outer sleeve (8) slides in the movable hole (15); A blowing hole (10) is provided at the center of the shaping block (5), a movable groove (20) is provided below the blowing hole (10), a fixed plate (21) is fixedly connected inside the movable groove (20), a hole is provided at the center of the fixed plate (21), a sliding rod (22) is provided inside the movable groove (20), the sliding rod (22) passes through the hole at the center of the fixed plate (21), a circular cake-shaped sliding block (11) with a diameter consistent with that of the blowing hole (10) is provided at the top of the sliding rod (22), a return spring (23) is provided between the sliding block (11) and the fixed plate (21), the return spring (23) is sleeved on the sliding rod (22), a circular cake-shaped baffle (24) with a diameter consistent with that of the cylindrical movable groove (20) is provided at the bottom end of the sliding rod (22), and the baffle (24) is placed below the fixed plate (21); The movable groove (20) is divided into two spaces by a fixed plate (21), the space above the fixed plate (21) being a release space, and the space below the fixed plate (21) being a control space. The release space and the control space are connected via a first jet pipe (25) and a second jet pipe (26), and the control space is connected to an external air source via a second airway (19).

2. A stamping die based on compressed gas demoulding according to claim 1, characterized in that: A force-bearing end (102) is provided on the upper die (1), a pressure rod (16) is provided below the force-bearing end (102), and the pressure rod (16) is fixedly connected to the pressing block (14).

3. A stamping die based on compressed gas demoulding according to claim 1, characterized in that: The upper mold (1) is provided with a mounting hole (101) and a retreat hole (104), a sleeve (103) is installed in the mounting hole (101), a fixing rod (4) is fixedly connected to the bottom plate (3), and the upper end of the fixing rod (4) slides in the sleeve (103).

4. A stamping die based on compressed gas demoulding according to claim 3, characterized in that: A retreat rod (6) is inserted into the retreat hole (104), the bottom of the retreat rod (6) is threadedly connected to the pressing plate (12), a buffer spring (7) is provided between the pressing plate (12) and the upper mold (1), and the buffer spring (7) is sleeved on the retreat rod (6).

5. A stamping die based on compressed gas demoulding according to claim 1, characterized in that: A limiting groove (13) is provided in the outer sleeve (8), and the pressing block (14) is installed and fixed in the limiting groove (13).

6. A stamping die based on compressed gas demoulding according to claim 1, characterized in that: The processing table (301) is provided with a limiting bolt (302).

7. A stamping die based on compressed gas demoulding according to claim 1, characterized in that: An adjusting rod (9) is provided below the edge ring (18), and the adjusting rod (9) passes through the lower mold (2) and the bottom plate (3). An air channel 1 (17) is provided inside the lower mold (2) and the bottom plate (3), and the air channel 1 (17) is connected to the air channel 2 (19).

8. A stamping die based on compressed gas demoulding according to claim 1, characterized in that: The release space placed above the fixed plate (21) can be subdivided into two areas, namely a blowing area and a compression area. The blowing area and the compression area are divided by a slider (11). The size of the blowing area and the compression area is variable. The blowing area is placed above the compression area.

9. A stamping die based on compressed gas demoulding according to claim 8, characterized in that: When the blowing hole (10) is not blowing air, the slider (11) is flush with the shaping block (5), at which time the area size of the compression area reaches a maximum, and the area size of the blowing area is zero; when the blowing hole (10) is blowing air, the slider (11) moves downward, the area size of the blowing area reaches a maximum, and the area size of the compression area reaches a minimum.

10. A method for using a stamping die based on compressed gas demoulding, comprising the stamping die based on compressed gas demoulding according to claim 1, mainly comprising the following steps: S1, placing the workpiece to be processed on the shaping block (5); S2, the pressing plate (12) and the pressing block (14) are pressed downward to punch the workpiece; S3, the pressing plate (12) and the pressing block (14) are reset; S4, the first air jet pipe (25) and the second air jet pipe (26) eject air through the air blowing hole (10) to eject the molded part.

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