Metal part stamping machining die

Abstract

The utility model discloses a metal part stamping machining die, which belongs to the technical field of stamping dies, and is characterized by comprising an upper die body and a lower die body, both sides of the lower die body are provided with gas storage mechanisms, the tops of the gas storage mechanisms are provided with limiting mechanisms, and both sides of the upper die body are fixedly connected with pressing blocks; the air storage mechanism comprises a one-way valve, a pressing plate, four fixing rods, an air bag and a bottom plate, and the problems that after part of existing traditional metal piece stamping dies complete stamping work, a metal piece and a lower die body can be tightly attached, and particularly after some metal pieces with complex shapes are stamped, the metal piece cannot be tightly attached to the lower die body are solved. The problems that the metal part is easily embedded into the lower die body and is inconvenient to take out due to the fact that the metal part is firmly embedded into the lower die body due to the reasons such as deformation fit generated in the stamping process, the metal part needs to be taken out with the help of an external tool, and the stamping efficiency of the metal part is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a stamping die for metal parts. Background Technology

[0002] Stamping dies are special process equipment used in cold stamping to process materials into parts. They are also known as cold stamping dies. They enable sheet metal to undergo plastic deformation under the pressure of a press through the specific shape and size of the die, thereby obtaining stamped parts with the required shape, size and precision. They are widely used in many fields such as automobiles, electronics, home appliances, and aerospace.

[0003] Most stamping dies used for metal sheet preparation are inconvenient to fix the workpiece during use, and the workpiece is prone to displacement during stamping, which affects the use. This greatly limits the scope of application of stamping dies used for metal sheet preparation.

[0004] The existing patent (publication number: CN212598201U) discloses a stamping die for metal sheet preparation. This stamping die for metal sheet preparation uses a lead screw. By rotating the lead screw, the lead screw passes through the entire slider. The lead screw and the slider form a threaded structure to facilitate the horizontal movement of the slider, clamping the workpiece and preventing wobbling. The slider slides inside the groove through a sliding structure formed with the groove, which facilitates fixing the movement direction of the slider.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, in some traditional metal stamping dies, after the stamping process is completed, the metal part and the lower die will fit tightly together. Especially for some complex-shaped metal parts, after stamping, the metal part will be firmly embedded inside the lower die due to deformation and fitting during stamping. This makes it difficult to remove the metal part from the lower die, requiring the use of external tools to remove it, thus affecting the efficiency of metal stamping.

[0006] To address this, a metal stamping die is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a metal stamping die that can solve the problem that in some existing traditional metal stamping dies, after the stamping work is completed, the metal part and the lower die will be tightly fitted together. Especially for some metal parts with complex shapes, after stamping, the metal part will be firmly embedded in the lower die due to deformation and fitting during stamping. This makes it difficult to remove the metal part, requiring the use of external tools to remove the metal part, which affects the stamping efficiency of the metal part.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a metal part stamping die, comprising an upper die body and a lower die body, wherein air storage mechanisms are provided on both sides of the lower die body, a limit mechanism is provided on the top of the air storage mechanism, and pressure blocks are fixedly connected to both sides of the upper die body.

[0009] The gas storage mechanism includes a one-way valve, a pressure plate, four fixing rods, an air bladder, and a base plate. The base plate is fixedly connected to the lower mold body on the side closest to the lower mold body. The bottom of the air bladder is fixedly connected to the top of the base plate. The bottom of the pressure plate is fixedly connected to the top of the air bladder. The bottom of the fixing rod is fixedly connected to the top of the base plate. The fixing rod is movably connected inside the pressure plate.

[0010] Preferably, the pressure plate has a through hole inside, and the bottom of the one-way valve passes through the through hole and is fixedly connected to the top of the airbag.

[0011] Preferably, a spring is movably sleeved on the surface of the fixing rod, with the top of the spring contacting the bottom of the pressure plate and the bottom of the spring contacting the top of the base plate.

[0012] Preferably, the lower mold body has two air inlets inside, and a connecting pipe is fixedly connected to the surface of the airbag. The side of the connecting pipe closest to the air inlet is connected to the air inlet.

[0013] Preferably, the limiting mechanism includes a rod, a pull ring, and two limiting clips. The side of the limiting clip closest to the base plate is fixedly connected to the base plate, and the side of the pull ring closest to the rod is fixedly connected to the rod. The rod is movably inserted between the two limiting clips, and the bottom of the rod contacts the top of the pressure plate.

[0014] Preferably, the bottom of the pressure block contacts the top of the pressure plate, and a notch is provided inside the pressure block, with the insertion rod located inside the notch.

[0015] Preferably, the airbag is made of EPDM rubber, and the connecting tube is made of explosion-proof material.

[0016] Preferably, the side of the pressure plate closest to the lower mold body is in active contact with the lower mold body.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application, by setting up an air storage mechanism, allows the upper die body to be connected to an external stamping machine. After the stamping material is placed on top of the lower die body, the external stamping machine drives the upper die body to press down on the stamping material. At this time, the pressure block will squeeze the pressure plate downward. At this time, the one-way valve closes, and the air inlet inside the lower die body is blocked by the stamping material, which increases the pressure inside the airbag. At this time, the insert rod is inserted into the limit card to limit the pressure plate. After the stamping work is completed, the upper die body moves upward under the drive of the external stamping machine, releasing the pressure on the stamped metal part. At this time, the air pressure inside the airbag pushes the stamped metal part through the connecting pipe and the air inlet, causing the metal part to quickly come out of the lower die body. Then, the insert rod is pulled out from the limit card. At this time, the airbag rebounds, the one-way valve opens, and the airbag is refilled with air. While the upper die body is pressing down to process the metal part, the gas can be pressurized and supplied to the metal part to be blown out from the lower die body, saving unnecessary energy consumption.

[0019] 2. This application limits the pressure plate by inserting the insert rod into the two limit clips so that the bottom of the insert rod contacts the top of the pressure plate. At this time, the air inside the airbag is under high pressure, which prepares for the metal part to be blown out from the lower mold body. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the metal stamping die of this utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the internal structure of the lower mold body in this utility model;

[0022] Figure 3 This utility model Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 4 This is a three-dimensional schematic diagram of the connection between the airbag and the one-way valve in this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the bottom of the upper mold body in this utility model;

[0025] Figure 6 This is a three-dimensional exploded view of the insertion rod and the limiting card in this utility model;

[0026] Figure 7 This is a three-dimensional structural diagram of the pressure plate of this utility model.

[0027] In the diagram, 1. Upper mold body; 2. Lower mold body; 3. Pressure block; 4. Air storage mechanism; 401. One-way valve; 402. Pressure plate; 403. Fixing rod; 404. Airbag; 405. Base plate; 5. Air inlet; 6. Limiting mechanism; 601. Insert rod; 602. Pull ring; 603. Limiting clip; 7. Spring; 8. Connecting pipe; 9. Notch; 10. Through hole. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-7 The present invention provides the following technical solution:

[0030] A metal stamping die includes an upper die body 1 and a lower die body 2. Both sides of the lower die body 2 are provided with air storage mechanisms 4, and the top of the air storage mechanism 4 is provided with a limit mechanism 6. Both sides of the upper die body 1 are fixedly connected with pressure blocks 3.

[0031] The gas storage mechanism 4 includes a one-way valve 401, a pressure plate 402, four fixing rods 403, an air bladder 404, and a base plate 405. The side of the base plate 405 closest to the lower mold body 2 is fixedly connected to the lower mold body 2. The bottom of the air bladder 404 is fixedly connected to the top of the base plate 405. The bottom of the pressure plate 402 is fixedly connected to the top of the air bladder 404. The bottom of the fixing rod 403 is fixedly connected to the top of the base plate 405. The fixing rod 403 is movably connected inside the pressure plate 402.

[0032] In this embodiment: By connecting the upper die body 1 to an external stamping machine, the stamping material is placed on the top of the lower die body 2. The external stamping machine presses down on the stamping material to form it. At the same time, the pressure block 3 squeezes the pressure plate 402, the one-way valve 401 closes, the spring 7 contracts, and the air in the airbag 404 is compressed. Because the stamping material blocks the air inlet 5 inside the lower die body 2, the airbag 404 is sealed, which facilitates the pressure plate 402 to squeeze the airbag 404, thus increasing the air pressure inside the airbag 404. Then, the insertion rod 601 is inserted into the limiting card 603, and its bottom contacts the pressure plate 402 for limitation. Then, the external stamping machine drives the upper die body 1 to move upward, releasing the counter-stamping. During the pressing of the metal part, the high-pressure air in the airbag 404 enters the air inlet 5 through the connecting pipe 8, blowing out the stamping material in the lower die body 2, making it easier to remove the stamped metal part. By pulling out the insert rod 601, the spring 7 and the airbag 404 rebound, the one-way valve 401 opens, and the airbag 404 re-intakes air. The upper die body 1 completes gas pressurization while stamping the metal part, which is used to blow out the stamped metal part, saving energy and solving the problem that complex-shaped metal parts are difficult to remove after stamping by existing traditional stamping dies due to their tight fit and deformation with the lower die, requiring the use of external tools and affecting stamping efficiency.

[0033] Specifically, such as Figure 1 , Figure 4 and Figure 7 As shown, the pressure plate 402 has a through hole 10 inside, and the bottom of the one-way valve 401 passes through the pressure through hole 10 and is fixedly connected to the top of the airbag 404.

[0034] Specifically, such as Figure 3 As shown, a spring 7 is movably sleeved on the surface of the fixed rod 403. The top of the spring 7 contacts the bottom of the pressure plate 402, and the bottom of the spring 7 contacts the top of the base plate 405.

[0035] Specifically, such as Figure 2 and Figure 4 As shown, the lower mold body 2 has an air inlet 5 inside, and there are two air inlets 5. The surface of the airbag 404 is fixedly connected to a connecting pipe 8, and the side of the connecting pipe 8 near the air inlet 5 is connected to the air inlet 5.

[0036] In this embodiment: the bottom of the one-way valve 401 passes through the pressure plate 402 and is fixedly connected to the top of the airbag 404, so that the one-way valve 401 closes and does not leak air when the airbag 404 is compressed, and the one-way valve 401 opens to allow air in when the airbag 404 rebounds. When the pressure plate 402 is pressed down, the pressure plate 402 moves down on the surface of the slide rod. At this time, the spring 7 is compressed. After the pressure plate 402 is released, the spring 7 rebounds, the one-way valve 401 opens, and the rebound of the spring 7 causes the airbag 404 to return to its shape, so that the airbag 404 can be filled with air again. The air intake duct 5 is connected to the airbag 404 through the connecting pipe 8, so that the compressed and pressurized gas inside the airbag 404 can be input into the air intake duct 5.

[0037] Specifically, such as Figure 6 As shown, the limiting mechanism 6 includes a rod 601, a pull ring 602, and two limiting clips 603. The side of the limiting clip 603 closest to the base plate 405 is fixedly connected to the base plate 405. The side of the pull ring 602 closest to the rod 601 is fixedly connected to the rod 601. The rod 601 is movably inserted between the two limiting clips 603. The bottom of the rod 601 contacts the top of the pressure plate 402.

[0038] Specifically, such as Figure 1 , Figure 5 and Figure 6 As shown, the bottom of the pressure block 3 contacts the top of the pressure plate 402, and a notch 9 is provided inside the pressure block 3, with the insertion rod 601 located inside the notch 9.

[0039] In this embodiment: after the pressure plate 402 is pressed by the pressure block 3, the pull ring 602 is held to insert the insertion rod 601 into the two limiting clips 603, so that the bottom of the insertion rod 601 contacts the top of the pressure plate 402, thereby limiting the pressure plate 402 with the insertion rod 601, preventing the airbag 404 from rebounding after the upper mold body 1 moves upward, causing the air inside the airbag 404 to lose pressure. By passing the insertion rod 601 through the notch 9, the insertion rod 601 can be easily inserted into the two limiting clips 603.

[0040] Specifically, such as Figure 1 and Figure 4 As shown, the airbag 404 is made of EPDM rubber, and the connecting tube 8 is made of explosion-proof material.

[0041] Specifically, such as Figure 1 As shown, the pressure plate 402 moves with the lower mold body 2 on the side closest to the lower mold body 2.

[0042] In this embodiment: the EPDM airbag 404 has good elasticity and durability to store compressed gas. The connecting pipe 8 made of explosion-proof material can prevent the connecting pipe 8 from bursting when the airbag 404 is compressed. By having the pressure plate 402 in active contact with the surface of the lower mold body 2 on the side close to the lower mold body 2, the up and down movement of the pressure plate 402 can be made more stable.

[0043] Working Principle: After connecting the upper die body 1 to an external stamping press, the stamping material is moved to the top of the lower die body 2. While the external stamping press presses down to stamp the material, the pressure block 3 squeezes the pressure plate 402. At this time, the one-way valve 401 closes, the spring 7 contracts, and the air stored inside the airbag 404 is squeezed. Due to the blockage of the air inlet 5 inside the lower die body 2 by the stamping material, the airbag 404 is sealed, facilitating the pressure plate 402 to squeeze the airbag 404 and increase the air pressure inside the airbag 404. Then, the insert rod 601 is inserted into the limiting card 603. At this time, the bottom of the insert rod 601 contacts the top of the pressure plate 402, which limits the pressure plate 402. Then, the external stamping press drives the upper die body 1 to move upward. At this time, the upper die body 1 releases the pressure on the stamped metal part, and the high-pressure air inside the airbag 404 enters the air inlet 5 through the connecting pipe 8, which in turn compresses the lower die body 404. The stamping material inside body 2 is blown out, making it easy to remove the stamped metal part from inside the lower die body 2. By pulling the insert rod 601 out from inside the limit card 603, the spring 7 returns, the air bag 404 returns, and the one-way valve 401 opens, allowing the air bag 404 to be refilled with air. While the upper die body 1 is pressing down to process the metal part, the gas can be pressurized and supplied to the metal part to be blown out from inside the lower die body 2, saving unnecessary energy consumption. This avoids the problem that in some traditional metal stamping dies, after the stamping work is completed, the metal part and the lower die will be tightly fitted. Especially for some metal parts with complex shapes, after stamping, the metal part will be firmly embedded in the lower die due to deformation and fitting during stamping, making it difficult to remove the metal part. External tools are needed to remove the metal part, which affects the stamping efficiency of the metal part.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A metal stamping die, comprising an upper die body (1) and a lower die body (2), characterized in that: Both sides of the lower mold body (2) are provided with air storage mechanisms (4), and the top of the air storage mechanism (4) is provided with a limit mechanism (6). Both sides of the upper mold body (1) are fixedly connected with pressure blocks (3). The gas storage mechanism (4) includes a one-way valve (401), a pressure plate (402), four fixing rods (403), an airbag (404), and a base plate (405). The base plate (405) is fixedly connected to the lower mold body (2) on the side closest to the lower mold body (2). The bottom of the airbag (404) is fixedly connected to the top of the base plate (405). The bottom of the pressure plate (402) is fixedly connected to the top of the airbag (404). The bottom of the fixing rod (403) is fixedly connected to the top of the base plate (405). The fixing rod (403) is movably connected inside the pressure plate (402).

2. The metal stamping die according to claim 1, characterized in that: The pressure plate (402) has a through hole (10) inside, and the bottom of the one-way valve (401) passes through the pressure through hole (10) and is fixedly connected to the top of the airbag (404).

3. The metal stamping die according to claim 1, characterized in that: A spring (7) is movably sleeved on the surface of the fixing rod (403). The top of the spring (7) contacts the bottom of the pressure plate (402), and the bottom of the spring (7) contacts the top of the base plate (405).

4. A metal stamping die according to claim 1, characterized in that: The lower mold body (2) has an air inlet channel (5) inside. There are two air inlets channel (5). The surface of the airbag (404) is fixedly connected to a connecting pipe (8). The side of the connecting pipe (8) near the air inlet channel (5) is connected to the air inlet channel (5).

5. A metal stamping die according to claim 1, characterized in that: The limiting mechanism (6) includes a rod (601), a pull ring (602), and two limiting clips (603). The limiting clip (603) is fixedly connected to the base plate (405) on the side near the base plate (405). The pull ring (602) is fixedly connected to the rod (601) on the side near the rod (601). The rod (601) is movably inserted between the two limiting clips (603). The bottom of the rod (601) contacts the top of the pressure plate (402).

6. A metal stamping die according to claim 5, characterized in that: The bottom of the pressure block (3) is in contact with the top of the pressure plate (402), and a notch (9) is provided inside the pressure block (3), and the insertion rod (601) is located inside the notch (9).

7. A metal stamping die according to claim 4, characterized in that: The airbag (404) is made of EPDM rubber, and the connecting tube (8) is made of explosion-proof material.

8. A metal stamping die according to claim 1, characterized in that: The pressure plate (402) is in active contact with the lower mold body (2) on the side closest to the lower mold body (2).

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