Side draw trim die

Abstract

This utility model relates to the field of molding die technology and discloses a side-punching and trimming die, including an upper die base and a lower die base. A lower backing plate is provided on the lower die base, and a support die is provided on the top of the lower backing plate. The support die supports the workpiece. Several side-cutting blades are provided on both sides of the support die, and each side-cutting blade can simultaneously move closer to or further away from the workpiece. A pressure plate and a side-cutting drive block are provided on the upper die base. The pressure plate cooperates with the support die to press the workpiece, and the side-cutting drive block drives the side-cutting blades to cut off the exposed edge of the workpiece from the support die. This side-punching and trimming die converts vertical punching force into horizontal cutting force, enabling one-time forming of side features within the molding cavity. It is suitable for parts with irregular structures and complex geometries, and its precise fit with the molding cavity ensures positioning accuracy, resulting in smoother cuts, fewer burrs, and higher product consistency. It is particularly suitable for machining precision parts.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, and in particular to a side-punching and trimming die. Background Technology

[0002] For processes involving stamping thin sheet metal into target shapes, the edges of the formed parts need to be cut. For complex-shaped parts (such as curved parts or parts with full-circumference flanges), traditional edge cutting methods rely on manual operation, which involves workers being close to the dangerous area of ​​the mold, resulting in high operational risks. Conventional upper and lower parting dies are difficult to handle parts with concave or convex sides, holes, or irregular structures, requiring secondary processing. Subsequent cutting is prone to scratches and deformation due to part transfer or clamping, causing secondary damage. Furthermore, the step-by-step mold changing process is prone to positioning errors, resulting in uneven cross-sections. This is especially true for thin parts, which are more prone to deformation during positioning and cutting, making it difficult to guarantee dimensional accuracy and resulting in problems such as inaccurate edge dimensions and numerous burrs. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a side-punching and trimming mold to improve positioning accuracy and ensure molding quality.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A side-punching and trimming die includes an upper die base and a lower die base. A lower pad is provided on the lower die base, and a support die is provided on the top of the lower pad. The support die is used to support the workpiece. Several side-cutting blocks are provided on both sides of the support die. Each side-cutting block can move closer to or further away from the workpiece simultaneously. A pressure plate and a side-cutting drive block are provided on the upper die base. The pressure plate is used to cooperate with the support die to press the workpiece. The side-cutting drive block is used to drive the side-cutting blocks to cut off the part of the workpiece that is exposed to the support die.

[0006] As an alternative, sliding wedges are provided on both sides of the support mold. The sliding wedges are slidably mounted on the lower mold base. The lower mold base is provided with a wedge pressing block and a reset component. The wedge pressing block is used to limit the two sides of the sliding wedge, and the reset component is used to provide a force for the sliding wedge to move away from the support mold. The side cutting block on each side is fixed on the side of the sliding wedge closer to the support mold, and the side cutting drive block is located on the side of the sliding wedge away from the support mold. The side cutting drive block and the sliding wedge are engaged with an inclined surface.

[0007] As an alternative, the side-cutting blades on the same side are arranged side by side and form a cutting edge shape that adapts to the surface shape of the workpiece.

[0008] As an optional solution, the lower mold base is also provided with anti-side block, and the anti-side block and sliding wedge are distributed on both sides of the side cutting drive block. The anti-side block is used to limit the side cutting drive block.

[0009] As an alternative, the lower mold base is provided with a lower slide plate that contacts the sliding wedge; the anti-side block is provided with a side slide plate that contacts the side-cutting drive block.

[0010] As an alternative, a fixed plate is provided on the upper mold base, and a spring is provided between the fixed plate and the pressure plate. The spring is used to make the pressure plate float relative to the fixed plate and to provide the pressure plate with the clamping force on the workpiece.

[0011] As an alternative, the pressure plate is equipped with a spring-loaded pin, which is used to push the workpiece away from the pressure plate.

[0012] As an alternative, the support mold is provided with an inner positioning and an ejector pin. The inner positioning is used to determine the position of the workpiece on the support mold, and the ejector pin is used to push the workpiece away from the support mold.

[0013] As an alternative, one of the upper mold base and the lower mold base is provided with a guide post, and the other of the upper mold base and the lower mold base is provided with a guide sleeve that mates with the guide post.

[0014] As an alternative, limit posts are provided on the upper mold base and the lower mold base respectively, and the limit posts of the upper mold base abut against the limit posts of the lower mold base when the mold is closed.

[0015] The beneficial effects of this utility model are:

[0016] This side-punching and trimming die converts vertical punching force into horizontal cutting force, enabling one-time forming of side features within the forming cavity. This simplifies the process, improves processing efficiency, and is suitable for parts with irregular structures and complex geometries. It also fits precisely with the forming cavity, ensuring positioning accuracy, resulting in smoother cuts, fewer burrs, and higher product consistency. It is especially suitable for processing precision parts. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the shape of the workpiece to be cut.

[0018] Figure 2 yes Figure 1 A schematic diagram of the workpiece after it has been formed;

[0019] Figure 3 This is a schematic diagram of the structure of the side-punching and trimming die provided in this embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the lower mold base involved in an embodiment of this utility model.

[0021] In the attached image:

[0022] 1. Upper mold base; 2. Lower mold base; 3. Lower backing plate; 4. Support mold; 5. Side cutting blade block; 6. Pressure plate; 7. Side cutting drive block; 8. Sliding wedge; 9. Wedge pressure block; 10. Reset component; 11. Anti-side block; 12. Lower slide plate; 13. Side slide plate; 14. Fixing plate; 15. Spring; 16. Spring ejector pin; 17. Internal positioning; 18. Ejector pin; 19. Guide post; 20. Guide sleeve; 21. Limiting post. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0028] The automotive manufacturing industry has high requirements for the precision of parts and strict requirements for production cycle time. Taking the production of automotive heat shields as an example... Figure 1 The workpiece shown is formed by stamping from a thin sheet of material; the flanges formed at the edges need to be removed before it can be formed into its final shape. Figure 2 The product. Because the required cutting direction is different from the mold closing direction, the original process required multiple sets of molds to complete the side cutting in steps. However, the mold changing process is prone to positioning errors, resulting in poor cutting quality.

[0029] For this, please refer to Figure 3 and Figure 4 As shown, this embodiment provides a side-punching and trimming die, including an upper die base 1 and a lower die base 2. A lower pad 3 is provided on the lower die base 2, and a support die 4 is provided on the top of the lower pad 3. The support die 4 is used to support the workpiece. Several side-cutting blocks 5 are provided on both sides of the support die 4. Each side-cutting block 5 can move closer to or further away from the workpiece simultaneously. A pressure plate 6 and a side-cutting drive block 7 are provided on the upper die base 1. The pressure plate 6 is used to cooperate with the support die 4 to press the workpiece, and the side-cutting drive block 7 is used to drive the side-cutting blocks 5 to cut off the part of the workpiece that is exposed on the edge of the support die 4.

[0030] It should be noted that the side stamping and trimming die can be integrated into the forming die. In one mold closing process, the forming sub-die first completes the molding of the thin sheet material, and then the side stamping and trimming sub-die removes the excess edge material, thus eliminating the mold changing process and achieving one-time molding.

[0031] Considering the mold design cost, this side stamping and trimming mold can also be designed as an independent mold. The support mold 4 and the pressure plate 6 can form a forming cavity that is exactly the same as the forming mold, and ensure the accurate positioning and reliable clamping of the workpiece, thereby ensuring the trimming quality.

[0032] Therefore, this side-punching and trimming die converts vertical punching force into horizontal cutting force, which can complete the one-time forming of side features within the forming cavity, simplifying the process flow, improving processing efficiency, and is suitable for parts with irregular structures and complex geometries. It also fits precisely with the forming cavity to ensure positioning accuracy, resulting in smoother cuts, fewer burrs, and higher product consistency, making it especially suitable for processing precision parts.

[0033] In at least one embodiment, sliding wedges 8 are respectively provided on both sides of the support mold 4. The sliding wedges 8 are slidably disposed on the lower mold base 2. The lower mold base 2 is provided with wedge pressing blocks 9 and reset members 10. The wedge pressing blocks 9 are used to limit the two sides of the sliding wedges 8. The reset members 10 are used to provide the sliding wedges 8 away from the support mold 4. The side cutting blocks 5 on each side are fixed on the side of the sliding wedges 8 close to the support mold 4. The side cutting drive block 7 is located on the side of the sliding wedges 8 away from the support mold 4, and the side cutting drive block 7 and the sliding wedges 8 are engaged with an inclined surface.

[0034] Therefore, during the mold closing process, the sliding wedge 8 is driven to move towards the support mold 4 by the inclined surface of the side cutting drive block 7 and the sliding wedge 8 through the cooperation of the inclined surface of the side cutting drive block 7 and the reset member 10, thus completing the edge cutting; during the mold opening process, the side cutting drive block 7 gradually withdraws, and the sliding wedge 8 moves away from the support mold 4 under the action of the reset member 10, which facilitates the picking and unloading of the workpiece.

[0035] Furthermore, the reset element 10 here can be a combination of a nitrogen cylinder and a return hook, so that the reset element 10 is linked with the sliding wedge 8. Even if the mold is abnormally jammed, the sliding wedge 8 can still be forcibly driven to reset, avoiding damage to the mold and workpiece. Compared with the mechanical spring 15, the nitrogen cylinder has stable pressure, long service life, and is suitable for high-speed stamping.

[0036] Optionally, the side-cutting blade blocks 5 on the same side are arranged side by side and form a cutting edge shape that adapts to the surface shape of the workpiece.

[0037] The side cutting blade 5 here is made of high-hardness alloy steel such as SKD11 and DC53, and the surface is titanium-plated to improve wear resistance. The combination of multiple side cutting blades 5 can handle the complex contours of the workpiece, reduce the processing difficulty, and reduce stress concentration.

[0038] In some embodiments, the lower mold base 2 is also provided with an anti-side block 11, the anti-side block 11 and the sliding wedge 8 are distributed on both sides of the side cutting drive block 7, and the anti-side block 11 is used to limit the side cutting drive block 7.

[0039] Thus, the anti-side block 11 ensures accurate up-and-down movement of the side-cutting drive block 7 and generates a stable thrust on the sliding wedge 8.

[0040] Furthermore, the lower mold base 2 is provided with a lower slide plate 12 that contacts the sliding wedge 8; the anti-side block 11 is provided with a side slide plate 13 that contacts the side cutting drive block 7, to ensure smooth repeated movement of the sliding wedge 8 and reduce wear.

[0041] In some embodiments, a fixing plate 14 is provided on the upper mold base 1, and a spring 15 is provided between the fixing plate 14 and the pressure plate 6. The spring 15 is used to make the pressure plate 6 float relative to the fixing plate 14 and to provide the pressure plate 6 with a clamping force on the workpiece.

[0042] In other embodiments, the pressure plate 6 may be driven by a nitrogen cylinder and the clamping force may be controlled independently.

[0043] To prevent the pressure plate 6 from jamming the workpiece, in some embodiments, the pressure plate 6 is provided with a spring-loaded pin 16, which is used to push the workpiece away from the pressure plate 6.

[0044] Similarly, to avoid jamming of the support mold 4, in some embodiments, the support mold 4 is provided with an inner positioning 17 and an ejector pin 18. The inner positioning 17 is used to determine the position of the workpiece on the support mold 4, and the ejector pin 18 is used to push the workpiece away from the support mold 4, thereby facilitating material removal.

[0045] Optionally, one of the upper mold base 1 and the lower mold base 2 is provided with a guide post 19, and the other of the upper mold base 1 and the lower mold base 2 is provided with a guide sleeve 20 that cooperates with the guide post 19.

[0046] Therefore, the precise cooperation between the guide post 19 and the guide sleeve 20 ensures the movement accuracy of the upper mold base 1 relative to the lower mold base 2, guaranteeing stability and product quality consistency during mold opening and closing.

[0047] Optionally, limit posts 21 are provided on the upper mold base 1 and the lower mold base 2 respectively, and the limit posts 21 of the upper mold base 1 abut against the limit posts 21 of the lower mold base 2 when the mold is closed.

[0048] Therefore, the precise positioning of the upper and lower limit pins 21 is used to control the mold closing gap and avoid excessive mold closing.

[0049] In addition, a waste guide plate is provided below the cutting position of the side cutting blade block 5, a discharge hole is provided on the lower mold base 2, and a waste basket is provided below the discharge port.

[0050] Therefore, after the edge cutting is completed, when the side cutting blade block 5 is reset, the waste material falls naturally due to gravity and slides down the waste material guide plate to the waste material basket, realizing automatic waste material collection.

[0051] Detailed operating procedures and steps:

[0052] S1. Preparations before operation: Confirm that the cutting edge of the side cutting block 5 is free of chips, the sliding wedge 8 is adequately lubricated, and the reset component 10 is functioning normally; remove oil stains and residual waste from the mold surface to prevent scratching the workpiece or jamming the mold.

[0053] S2. Workpiece positioning preparation: Rely on internal positioning 17, positioning pins or laser alignment instrument to ensure that the workpiece is aligned with the forming mold cavity (error ≤ 0.1mm).

[0054] S3. Pre-compression test: Lightly press the workpiece with the pressure plate 6 to confirm that there is no offset or warping.

[0055] S4. Gap Adjustment: Adjust the gap between the side cutting blade block 5 and the support mold 4 according to the thickness of the workpiece material to ensure a smooth cut.

[0056] S5. Adjustment of the stroke of the sliding wedge 8: Manually jog the mold to observe whether the horizontal movement of the sliding wedge 8 is smooth and whether the preload of the pressure plate 6 is reasonable.

[0057] S6. No-load test run: Without placing a workpiece, perform 3 to 5 complete stamping cycles to check the synchronization of the mechanism's actions and whether the waste discharge path is unobstructed.

[0058] S7. Workpiece Placement: The robot or manual staff places the workpiece on the support mold 4 to ensure it fits the inner positioning 17 or the reference surface; the pressure plate 6 is activated to evenly press the edge of the workpiece to prevent it from moving during side cutting.

[0059] S8. Side cutting: The upper mold base 1 moves downward, and the side cutting drive block 7 drives the sliding wedge 8 to push the side cutting blade block 5 to move horizontally, simultaneously completing multi-directional cutting and realizing one-time stamping.

[0060] S9. Waste disposal: Waste slides down the waste guide plate to the waste basket, or is forcibly discharged by an air blowing device.

[0061] S10. Workpiece removal: The upper mold base 1 is reset, the pressure plate 6 moves upward, and the spring ejector pin 16 on the pressure plate 6 and the ejector pin 18 on the support mold 4 eject the workpiece respectively, making it convenient to remove the workpiece after the trimming is completed.

[0062] In summary, this side-stamping and trimming die has the following advantages:

[0063] 1) It improves the processing capability of complex parts. Through side parting or trimming, the side features can be formed directly in the mold in one step, simplifying the process flow and making it suitable for parts with complex geometric shapes and irregular structures.

[0064] 2) Improved machining accuracy and surface quality, reduced secondary damage caused by part transfer or clamping, achieved high-precision positioning, and higher product consistency, especially suitable for machining precision parts;

[0065] 3) It reduces material and production costs, can accurately remove excess waste, reduces material waste, and significantly reduces the production time of a single workpiece, thus shortening the production cycle;

[0066] 4) Enhanced mold functionality and design flexibility. Combined with hydraulic, wedge, or spring mechanisms, it can achieve multi-directional synchronous edge cutting or forming, supporting more complex product designs (such as multi-curved surfaces and hidden snap-fits). Furthermore, through modular design, the side cutting block 5 can be quickly adjusted to cope with small-batch, multi-variety production.

[0067] 5) It promotes automated and intelligent production. The side stamping and trimming die is easy to cooperate with robots and conveyor belts to achieve fully automated continuous production, reduce manual intervention, and integrate sensors for real-time detection during the trimming process to provide timely data feedback, improve the level of intelligent manufacturing, and achieve quality monitoring.

[0068] 6) Safety is improved, reducing the risk of manual operation. The entire side cutting process is completed automatically in a closed mold, reducing the probability of workplace injuries.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A side-punching and trimming die, comprising an upper die base (1) and a lower die base (2), characterized in that, The lower mold base (2) is provided with a lower pad plate (3), and a support mold (4) is provided on the top of the lower pad plate (3). The support mold (4) is used to support the workpiece. Several side cutting blocks (5) are provided on both sides of the support mold (4). Each side cutting block (5) can move closer to or further away from the workpiece synchronously. The upper mold base (1) is provided with a pressure plate (6) and a side cutting drive block (7). The pressure plate (6) is used to cooperate with the support mold (4) to press the workpiece. The side cutting drive block (7) is used to drive the side cutting blocks (5) to cut off the part of the workpiece that is exposed on the support mold (4).

2. The side-punching and trimming die according to claim 1, characterized in that, The support mold (4) is provided with sliding wedges (8) on both sides. The sliding wedges (8) are slidably disposed on the lower mold base (2). The lower mold base (2) is provided with wedge pressing blocks (9) and reset members (10). The wedge pressing blocks (9) are used to limit the two sides of the sliding wedges (8). The reset members (10) are used to provide the sliding wedges (8) away from the support mold (4) with force. The side cutting blocks (5) on each side are fixed on the side of the sliding wedges (8) close to the support mold (4). The side cutting drive block (7) is located on the side of the sliding wedges (8) away from the support mold (4), and the side cutting drive block (7) and the sliding wedges (8) are in inclined surface cooperation.

3. The side-punching and trimming die according to claim 2, characterized in that, The side-cutting blades (5) on the same side are arranged side by side and form a cutting edge shape that matches the surface shape of the workpiece.

4. The side-punching and trimming die according to claim 2, characterized in that, The lower mold base (2) is also provided with an anti-side block (11). The anti-side block (11) and the sliding wedge (8) are distributed on both sides of the side-cutting drive block (7). The anti-side block (11) is used to limit the side-cutting drive block (7).

5. The side-punching and trimming die according to claim 4, characterized in that, The lower mold base (2) is provided with a lower slide plate (12) that contacts the sliding wedge (8); the anti-side block (11) is provided with a side slide plate (13) that contacts the side cutting drive block (7).

6. The side-punching and trimming die according to claim 1, characterized in that, A fixing plate (14) is provided on the upper mold base (1), and a spring (15) is provided between the fixing plate (14) and the pressure plate (6). The spring (15) is used to make the pressure plate (6) float relative to the fixing plate (14) and provide the pressure plate (6) with the workpiece.

7. The side-punching and trimming die according to claim 1, characterized in that, The pressure plate (6) is provided with a spring-loaded pin (16), which is used to push the workpiece away from the pressure plate (6).

8. The side-punching and trimming die according to claim 1, characterized in that, The support mold (4) is provided with an inner positioning (17) and an ejector pin (18). The inner positioning (17) is used to determine the position of the workpiece on the support mold (4), and the ejector pin (18) is used to push the workpiece away from the support mold (4).

9. The side-punching and trimming die according to claim 1, characterized in that, One of the upper mold base (1) and the lower mold base (2) is provided with a guide post (19), and the other of the upper mold base (1) and the lower mold base (2) is provided with a guide sleeve (20) that cooperates with the guide post (19).

10. The side-punching and trimming die according to claim 1, characterized in that, Limiting posts (21) are respectively provided on the upper mold base (1) and the lower mold base (2). When the mold is closed, the limiting post (21) of the upper mold base (1) abuts against the limiting post (21) of the lower mold base (2).

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