Stamping die

Abstract

The stamping die comprises an upper die body, a lower die body and a demolding assembly, the lower die body is used for being matched with the upper die body, a mounting groove is formed in the side, facing the upper die body, of the lower die body, the mounting groove comprises an ejection groove and a limiting groove which are communicated with each other in the direction from the upper die body to the lower die body, and a first through hole communicated with the ejection groove is formed in the side wall of the lower die body; the first through hole is used for being communicated with a first air supply part, and the demolding assembly is arranged in the mounting groove and can move in the axial direction of the mounting groove so as to fill or retreat from the ejection groove. The workpiece is ejected out through gas, no ejector pin and other structures make direct contact with the workpiece, and therefore the situation that the ejector pin and other structures damage the workpiece is avoided, the effects that demolding is convenient, and the workpiece is not prone to being damaged are achieved, product scrapping is reduced, and the production cost is reduced.

Description

Technical Field

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

[0002] Stamping dies are special process equipment used in cold stamping to process materials (metal or non-metal) into parts (or semi-finished products). They are called cold stamping dies (commonly known as cold stamping molds). Stamping is a pressure processing method that uses a die mounted on a press to apply pressure to the material at room temperature, causing it to separate or plastically deform, thereby obtaining the desired part. It uses ejector pins for demolding; however, the ejector pins have high hardness and a small direct contact area with the workpiece surface, which easily damages the workpiece surface during demolding, leading to product scrap and affecting production costs. Utility Model Content

[0003] Therefore, the main purpose of this utility model is to provide a stamping die that is easy to demold and does not easily damage the workpiece.

[0004] To achieve the above objectives, this utility model provides a stamping die. It includes: an upper die;

[0005] The lower mold is used to adapt to the upper mold. The lower mold has a mounting groove on the side facing the upper mold. In the direction from the upper mold to the lower mold, the mounting groove includes an ejector groove and a limiting groove that are connected. The side wall of the lower mold has a first through hole that communicates with the ejector groove. The first through hole is used to communicate with the first air supply component.

[0006] A demolding assembly is disposed in the mounting groove, and the demolding assembly is movable along the axial direction of the mounting groove to fill or exit the ejection groove.

[0007] Optionally, the demolding assembly includes a filler and a limiting member connected together. The limiting member is disposed in the limiting groove. The filler can move along the axial direction of the mounting groove together with the limiting member to fill or exit the ejection groove. The cross-sectional dimensions and height of the filler are adapted to the cross-sectional dimensions and depth of the ejection groove, respectively.

[0008] Optionally, the demolding assembly further includes an operating component. The side wall of the lower mold is provided with the operating groove, which extends axially along the mounting groove. The operating component partially passes through the operating groove and is connected to the limiting component. The operating component can move axially along the operating groove to drive the filler and the limiting component to move synchronously along the mounting groove.

[0009] Optionally, the demolding assembly further includes a locking element for locking the operating element relative to the operating slot.

[0010] Optionally, the stamping die further includes a driving component connected to the limiting component, the driving component being used to drive the limiting component to move axially along the mounting groove.

[0011] Optionally, the lower mold has a second through hole on the side opposite to the upper mold, and the second through hole is used to communicate with the second air supply component.

[0012] Optionally, the end of the ejector groove facing the upper mold is chamfered.

[0013] Optionally, the cross-sectional dimensions of the limiting member are adapted to the cross-sectional dimensions of the limiting groove, and the height of the limiting groove is greater than the sum of the heights of the filling member and the limiting member.

[0014] Optionally, the junction of the ejector groove and the limiting groove is chamfered.

[0015] Optionally, the stamping die further includes an elastic element disposed in the mounting groove. One end of the elastic element is connected to the bottom of the mounting groove, and the other end of the elastic element is connected to the limiting element. The elastic element is used to drive the filler and the limiting element away from the upper die along the axial direction of the mounting groove, so that the filler exits the ejection groove.

[0016] The advantages of this utility model are as follows: When a workpiece needs to be processed in a stamping die, the demolding component moves towards the upper die along the axial direction of the mounting groove to fill the ejection groove, and then the workpiece is processed. After the workpiece is processed in the stamping die, the demolding component moves away from the upper die along the axial direction of the mounting groove to exit the ejection groove. Then, the first air supply component is activated, and the first air supply component introduces gas into the ejection groove through the first through hole. As the gas gathers in the ejection groove, the pressure in the ejection groove gradually increases, thereby gradually ejecting the workpiece from the lower die, completing the demolding process. This application uses gas to eject the workpiece, eliminating the direct contact between ejector pins and other structures and the workpiece, thus avoiding damage to the workpiece from ejector pins and other structures. This achieves the effect of convenient demolding and less damage to the workpiece, thereby reducing product scrap and lowering production costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the devices shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a stamping die according to one embodiment;

[0019] Figure 2 As one embodiment Figure 1 Partial sectional view;

[0020] Figure 3 In another embodiment Figure 1 Partial sectional view;

[0021] Figure 4 This is a schematic diagram of the demolding assembly according to one embodiment;

[0022] Among them, 100 is the upper mold; 200 is the lower mold; 210 is the mounting groove; 211 is the ejection groove; 212 is the limiting groove; 220 is the first through hole; 230 is the operating groove; 240 is the second through hole; 300 is the demolding assembly; 310 is the filler; 320 is the limiting component; 400 is the first air supply component; 500 is the operating component; 600 is the driving component; 610 is the cylinder rod; 700 is the second air supply component; and 800 is the elastic component.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] 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.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, "and / or" throughout the text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] like Figure 1 and Figure 2 As shown, a stamping die includes an upper die 100, a lower die 200, and a demolding assembly 300. The lower die 200 is adapted to fit the upper die 100. The lower die 200 has a mounting groove 210 on the side facing the upper die 100. Along the direction from the upper die 100 to the lower die 200, the mounting groove 210 includes an ejection groove 211 and a limiting groove 212 that are connected. The side wall of the lower die 200 has a first through hole 220 that communicates with the ejection groove 211. The first through hole 220 is used to communicate with a first air supply component 400. The demolding assembly 300 is disposed in the mounting groove 210 and can move axially along the mounting groove 210 to fill or exit the ejection groove 211.

[0027] When a workpiece needs to be processed in a stamping die, the demolding assembly 300 moves axially along the mounting groove 210 towards the upper die 100 to fill the ejection groove 211. Then, the workpiece is processed. After the workpiece is processed in the stamping die, the demolding assembly 300 moves axially away from the upper die 100 along the mounting groove 210 to exit the ejection groove 211. Then, the first air supply component 400 is activated, introducing gas into the ejection groove 211 through the first through hole 220. As the gas accumulates in the ejection groove 211, the pressure gradually increases, causing the gas to gradually eject the workpiece from the lower die 200, completing the demolding process. This application uses gas to eject the workpiece, eliminating the direct contact between ejector pins and other structures, thus avoiding damage to the workpiece. This achieves convenient demolding and minimizes workpiece damage, thereby reducing product scrap and lowering production costs.

[0028] In this embodiment, the first air supply component 400 is connected to the first through hole 220 via a vent pipe. In this embodiment, the first air supply component 400 is an external structure, and the stamping die and the first air supply component 400 achieve the demolding process; it can be understood that in other embodiments, the stamping die includes the first air supply component 400, and the first air supply component 400 is a part of the stamping die.

[0029] refer to Figure 2 The end of the ejector groove 211 facing the upper mold 100 is chamfered. This design allows the gas in the ejector groove 211 to impact the workpiece more evenly, resulting in a larger and more uniform force distribution area on the workpiece, thus better completing the demolding process.

[0030] refer to Figure 2 , Figure 3 and Figure 4The demolding assembly 300 includes a filler 310 and a limiting member 320 connected together. The limiting member 320 is disposed in the limiting groove 212. The filler 310 can move together with the limiting member 320 along the axial direction of the mounting groove 210 to fill or exit the ejection groove 211. The cross-sectional dimensions and height of the filler 310 are adapted to the cross-sectional dimensions and depth of the ejection groove 211, respectively. Specifically, when the filler 310 and the limiting member 320 move together along the axial direction of the mounting groove 210 towards the upper mold 100 to fill the ejection groove 211, the upper surface of the filler 310 is flush with the end of the ejection groove 211 facing the upper mold 100, thus not affecting the flatness of the workpiece.

[0031] refer to Figure 1 and Figure 2 The demolding assembly 300 also includes an operating component 500. An operating groove 230 is provided on the side wall of the lower mold 200, extending axially along the mounting groove 210. The operating component 500 partially passes through the operating groove 230 and connects to the limiting component 320. The operating component 500 can move axially along the operating groove 230 to drive the filler 310 and the limiting component 320 to move synchronously along the mounting groove 210. Specifically, by manually operating the operating component 500, the filler 310 and the limiting component 320 can be driven to move synchronously along the mounting groove 210, thus achieving the filling or withdrawal of the filler 310 relative to the ejection groove 211. The operation is simple and convenient. In this embodiment, the operating component 500 is a columnar structure. It is understood that in other embodiments, the operating component 500 can also be a handle or other structure that is easy for a person to grip.

[0032] In another embodiment, the demolding assembly 300 also includes an operating member 500, but the side wall of the lower mold 200 does not have an operating groove 230. The operating member 500 passes through the limiting groove 212 from the side of the lower mold 200 away from the upper mold 100 and connects with the limiting member 320. By pushing and pulling the operating member 500, the filling member 310 and the limiting member 320 move synchronously along the axial direction of the mounting groove 210.

[0033] Specifically, the demolding assembly 300 also includes a locking element (not shown), which is used to lock the operating element 500 relative to the operating groove 230. Specifically, the locking element can be a screw, hook, ring, or latch located on the side wall of the lower mold 200, as long as it can lock the operating element 500 relative to the operating groove 230. This eliminates the need for manual maintenance of the operating element 500's position during workpiece processing.

[0034] refer to Figure 2The stamping die also includes a drive component 600, which is connected to a limiting component 320. The drive component 600 is used to drive the limiting component 320 to move axially along the mounting groove 210. Specifically, by driving the limiting component 320 to move via the drive component 600, the filling component 310 can be filled or withdrawn relative to the ejection groove 211, thus eliminating the need for the operating component 500 and requiring no manual operation of the demolding assembly 300. In other embodiments, the drive component 600 can also be connected to the operating component 500, with the drive component 600 driving the operating component 500 to move axially along the operating groove 230.

[0035] In this embodiment, the driving component 600 is a cylinder with a cylinder rod 610. The cylinder rod 610 passes through the lower mold 200 and is connected to the limiting component 320. The extension and retraction of the cylinder rod 610 drives the limiting component 320 to move axially along the mounting groove 210. In other embodiments, the driving component 600 may also be an electric push rod or other structure that can drive the limiting component 320 to move axially along the mounting groove 210.

[0036] refer to Figure 2 and Figure 3 The lower mold 200 has a second through hole 240 on the side opposite to the upper mold 100, which is used to communicate with the second air supply component 700. Specifically, when a workpiece needs to be processed, the second air supply component 700 is activated. The second air supply component 700 introduces gas into the limiting groove 212 through the second through hole 240. As the gas gathers in the limiting groove 212, the pressure in the limiting groove 212 gradually increases, thereby pushing the demolding component 300 up so that the filler 310 fills the ejection groove 211, and then the workpiece processing begins. In this embodiment, the second air supply component 700 is connected to the second through hole 240 through a vent pipe.

[0037] In this embodiment, the second air supply component 700 is an external structure, and the stamping die and the second air supply component 700 realize the demolding process; it can be understood that in other embodiments, the stamping die includes the second air supply component 700, and the second air supply component 700 is a part of the stamping die.

[0038] refer to Figure 2 The cross-sectional dimensions of the limiting member 320 are adapted to the cross-sectional dimensions of the limiting groove 212, and the height of the limiting groove 212 is greater than the sum of the heights of the filler 310 and the limiting member 320. Thus, when the filler 310 and the limiting member 320 move together along the mounting groove 210 away from the upper mold 100, so that the filler 310 exits the ejection groove 211, the filler 310 is completely separated from the ejection groove 211, thereby avoiding the situation where the filler 310 obstructs or partially obstructs the first through hole 220.

[0039] refer to Figure 2The junction of the ejector groove 211 and the limiting groove 212 is chamfered to facilitate the alignment of the filler 310 with the ejector groove 211.

[0040] refer to Figure 2 The stamping die also includes an elastic element 800, which is disposed in the mounting groove 210. One end of the elastic element 800 is connected to the bottom of the mounting groove 210, and the other end is connected to the limiting element 320. The elastic element 800 is used to drive the filler 310 and the limiting element 320 away from the upper die 100 along the axial direction of the mounting groove 210, so that the filler 310 exits the ejection groove 211. Specifically, the elastic element 800 facilitates the reset of the demolding assembly 300.

[0041] Specifically, when the elastic element 800 and the driving element 600 coexist, the elastic element 800 is sleeved on the cylinder rod 610 of the driving element 600.

[0042] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent device transformations made based on the contents of this utility model specification and drawings under the utility model concept, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A stamping die characterized by, Includes: upper mold; A lower mold is used to adapt to the upper mold. The lower mold has a mounting groove on the side facing the upper mold. In the direction from the upper mold to the lower mold, the mounting groove includes an ejector groove and a limiting groove that are connected. The side wall of the lower mold has a first through hole that communicates with the ejector groove. The first through hole is used to communicate with a first air supply component. A demolding assembly is disposed in the mounting groove. The demolding assembly can move along the axial direction of the mounting groove to fill or exit the ejector groove. The demolding assembly includes a filler and a limiting member connected together. The limiting member is disposed in the limiting groove. The filler can move together with the limiting member along the axial direction of the mounting groove so that the filler fills or exits the ejection groove. The cross-sectional dimensions and height of the filler are adapted to the cross-sectional dimensions and depth of the ejection groove, respectively. The demolding assembly also includes an operating component. The side wall of the lower mold is provided with an operating groove. The operating groove extends axially along the mounting groove. The operating component partially passes through the operating groove and is connected to the limiting component. The operating component can move axially along the operating groove to drive the filler and the limiting component to move synchronously along the mounting groove. The demolding assembly further includes a locking element, which is used to lock the operating element relative to the operating slot.

2. The stamping die as described in claim 1, characterized in that, The stamping die also includes a driving component connected to the limiting component, which is used to drive the limiting component to move axially along the mounting groove.

3. The stamping die of claim 1, wherein, The lower mold has a second through hole on the side opposite to the upper mold, and the second through hole is used to communicate with the second air supply component.

4. The stamping die of claim 1, wherein, The end of the ejector groove facing the upper mold is chamfered.

5. The stamping die of claim 1, wherein, The cross-sectional dimensions of the limiting member are adapted to the cross-sectional dimensions of the limiting groove, and the height of the limiting groove is greater than the sum of the heights of the filling member and the limiting member.

6. The stamping die of claim 1, wherein, The junction between the ejector groove and the limiting groove is chamfered.

7. The stamping die of claim 1, wherein, The stamping die also includes an elastic element disposed in the mounting groove. One end of the elastic element is connected to the bottom of the mounting groove, and the other end of the elastic element is connected to the limiting element. The elastic element is used to drive the filler and the limiting element away from the upper die along the axial direction of the mounting groove, so that the filler exits the ejection groove.

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