Punching and trimming assembly and trimming die
By integrating the punching and cutting components of the first and second abutment structures, punching of the top and side walls of the workpiece is completed simultaneously, solving the problem of step-by-step operation required by traditional molds and improving processing efficiency and hole position consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN JIXING LIGHTWEIGHT TECH CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional molds require step-by-step cutting and punching, resulting in cumbersome processes and low efficiency.
Design a punching and trimming assembly that integrates a first abutting structure, a second abutting structure, a cutting tool, and a stamping part to achieve simultaneous punching of the top and side walls. The top and side walls are punched through the first and second through holes respectively, and the waste material is quickly discharged through the unloading hole.
It achieves precise synchronization of punching on the top and side walls, significantly improving processing efficiency, reducing material deformation and cumulative positioning errors, and ensuring hole consistency and processing quality.
Smart Images
Figure CN224144849U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of edge trimming mold technology, and in particular to a punching and edge trimming component and an edge trimming mold. Background Technology
[0002] Trimming dies are specialized tooling used to remove excess edge material from workpieces after forming. They typically consist of a precision-fitted upper and lower die, and are powered by a press to achieve efficient shearing. They can precisely control the punching gap to ensure cut quality and are suitable for finishing automotive body panels, forging burrs, or injection molding flash.
[0003] In related technologies, for parts that need to be punched simultaneously on the top and side walls of the workpiece, traditional molds need to complete the cutting, top punching, and side wall punching in steps, resulting in cumbersome processes and low efficiency. Utility Model Content
[0004] This application discloses a punching and trimming assembly and a trimming die to solve the technical problems of cumbersome processes and low efficiency in related technologies.
[0005] To solve the above problems, the present invention adopts the following technical solution:
[0006] In a first aspect, this application discloses a punching and trimming assembly, applied to a trimming die, comprising:
[0007] A first abutting structure is provided on the upper mold; the first abutting structure has a first through hole corresponding to the part of the workpiece to be punched at the top;
[0008] The second abutting structure is provided in the lower mold and is used to place the workpiece; the second abutting structure has a second through hole corresponding to the punching part of the side wall of the workpiece;
[0009] The cutting tool is positioned around the first abutment structure;
[0010] A stamping part includes a first stamping rod, a second stamping rod, and a driving part; the first stamping rod is disposed on the upper die, and one end passes through the first through hole to punch the top of the workpiece; the driving part is disposed on the lower die, and the output end is connected to the second stamping rod to drive the second stamping rod to pass through the second through hole to punch the side wall of the workpiece.
[0011] In some designs, the second abutment structure is provided with a third through hole for the part of the workpiece to be punched, and the third through hole and the first through hole are coaxially arranged.
[0012] In some designs, the lower die is provided with a first unloading hole, one end of which is connected to a third through hole and the other end is connected to the outside, so that the punching waste of the workpiece can be discharged through the first unloading hole.
[0013] In some designs, the second abutment structure is provided with a second discharge hole corresponding to the punching part of the workpiece. The second discharge hole is connected to the outside so that the punching waste of the workpiece can be discharged through the second discharge hole.
[0014] In some designs, the second discharge port has an inclined surface that slopes downward from the inside to the outside of the second abutment structure.
[0015] And / or, the diameter of the first discharge hole is larger than the diameter of the third through hole.
[0016] In some designs, the first abutting structure is slidably connected to the upper mold along the height direction of the upper mold;
[0017] The first abutting structure can move between a first position and a second position. When the first abutting structure is in the first position, the bottom of the first stamping rod is inside the first through hole. When the first abutting structure is in the second position, the bottom of the first stamping rod is outside the first through hole.
[0018] In some designs, a first guide post is provided at the top of the first abutting structure, and the first abutting structure is slidably connected to the upper mold through the first guide post.
[0019] In some designs, a connecting plate is provided at the top of the first guide post, and the connecting plate is connected to the upper mold by an elastic element.
[0020] In some designs, the upper mold is equipped with a second guide post, and the connecting plate is slidably fitted to the second guide post;
[0021] And / or, a limit block is provided between the upper mold and the lower mold to restrict the movement of the upper mold.
[0022] Secondly, this application also discloses a trimming die, including the punching and trimming assembly described in the first aspect.
[0023] The technical solution adopted in this utility model can achieve the following beneficial effects:
[0024] In the punching and trimming assembly of this application, during the closing process of the upper and lower dies, the first punching rod moves towards the lower die to punch a hole in the top of the workpiece placed on the second abutment structure. The cutting tool cuts away the excess portion of the workpiece, while the drive unit drives the second abutment structure to punch a hole in the side wall of the workpiece. The design of the first abutment structure and the first punching rod, by integrating the top punching function into the upper die, achieves precise synchronization of the punching and trimming processes. The first through-hole provides wrapping positioning of the workpiece's punching area, ensuring that the first punching rod acts perpendicularly on the workpiece, avoiding offset or burrs. Simultaneously, the cutting tool and punching action are completed in tandem when the upper die presses down, significantly shortening the processing cycle and reducing material deformation or cumulative positioning errors caused by step-by-step operations, thus significantly improving the processing efficiency and hole consistency of complex workpieces. Furthermore, the synchronous action of the first and second punching rods allows the workpiece to be punched simultaneously with trimming, further increasing processing efficiency. Attached Figure Description
[0025] 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 these drawings without creative effort.
[0026] Figure 1 This is an isometric view of the trimming die disclosed in some embodiments of this application;
[0027] Figure 2 This is a top view of the trimming die disclosed in some embodiments of this application;
[0028] Figure 3 yes Figure 2 A cross-sectional view of the AA plane;
[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle;
[0030] Figure 5 yes Figure 2 Sectional view of the middle BB surface
[0031] Figure 6 yes Figure 5 Enlarged view of point B in the middle.
[0032] In the picture:
[0033] 100-Upper mold, 110-First abutting structure, 111-First through hole, 120-First guide post, 130-Elastic element, 140-Second guide post, 150-Connecting plate, 160-Limiting block;
[0034] 200 - Lower mold, 210 - Second abutment structure, 211 - Second through hole, 212 - Third through hole, 213 - Second unloading hole, 214 - Inclined surface, 220 - First unloading hole;
[0035] 300 - stamping part, 310 - first stamping rod, 320 - second stamping rod, 330 - drive unit;
[0036] 400 - Cutting tools;
[0037] 500 - Workpiece. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0039] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0040] The inventor discovered during the punching and trimming process of workpieces that for parts that need to be punched simultaneously on the top and side walls, traditional molds require step-by-step trimming, top punching, and side wall punching. Each process requires an independent mold, and the equipment needs to be stopped multiple times to change molds, which prolongs the production cycle and results in cumbersome processes and low efficiency.
[0041] The following is in conjunction with the appendix Figures 1 to 6 The present application provides a detailed description of a punching and trimming assembly and a trimming die through specific embodiments and application scenarios.
[0042] Some embodiments of this application disclose a punching and trimming assembly applied to a trimming mold, including a first abutting structure 110, a second abutting structure 210, a cutting tool 400, and a stamping part 300.
[0043] like Figure 1 , Figure 3 and Figure 5 As shown, the first abutting structure 110 is disposed on the upper mold 100, and the second abutting structure 210 is disposed on the lower mold 200, and is used to place the workpiece 500. After the lower mold 200 and the upper mold 100 are closed, the first abutting structure 110 and the second abutting structure 210 respectively stop the workpiece 500, forcing the workpiece 500 into a stable stress state before cutting and punching, effectively suppressing elastic slippage and stress release during shearing and punching processes.
[0044] like Figure 1 , Figure 3 and Figure 5 As shown, the cutting tool 400 is arranged around the first abutment structure 110. The cutting tool 400 is used to cut off the excess part of the workpiece 500. After the upper mold 100 and the lower mold 200 are closed, under the pressure of the upper mold 100, the cutting tool 400 arranged around the first abutment structure 110 cuts the workpiece 500 located outside the first abutment structure 110 and the second abutment structure 210 to cut off the excess part of the workpiece 500.
[0045] like Figure 2 , Figure 3 and Figure 4 As shown, the first abutting structure 110 has a first through hole 111 corresponding to the punched portion on the top of the workpiece 500. The stamping part 300 includes a first stamping rod 310, which is disposed on the upper die 100. One end of the first stamping rod passes through the first through hole 111 to punch the top of the workpiece 500. During the closing process of the upper die 100 and the lower die 200, the first stamping rod 310 moves toward the lower die 200 to punch the workpiece 500 placed on the second abutting structure 210. The design of the first abutment structure 110 and the first stamping rod 310 integrates the top punching function into the upper die 100, achieving precise synchronization of the punching and trimming processes. The first through hole 111 is used to wrap around and position the area of the workpiece 500 to be punched, ensuring that the first stamping rod 310 acts vertically on the workpiece 500, avoiding offset or burrs. At the same time, when the upper die 100 presses down, the tool 400 and the punching action are completed in coordination, which greatly shortens the processing cycle and reduces material deformation or positioning accumulation errors caused by step-by-step operations, significantly improving the processing efficiency and hole consistency of complex workpieces 500.
[0046] In this embodiment, there are multiple first through holes 111 and first stamping rods 310, which can be flexibly set according to the processing requirements of workpiece 500. This embodiment does not limit this.
[0047] like Figure 2 , Figure 3 and Figure 4As shown, the second abutment structure 210 has a second through hole 211 corresponding to the punched portion of the side wall of the workpiece 500. The stamping part 300 also includes a second stamping rod 320 and a driving part 330. The driving part 330 is disposed in the lower die 200, and its output end is connected to the second stamping rod 320 to drive the second stamping rod 320 through the second through hole 211 to punch the side wall of the workpiece 500. The design of the second abutment structure 210, the second stamping rod 320 and the driving part 330, through the integration of driving and precise positioning in the lower die 200, achieves efficient coordination of side wall punching. The second through hole 211 provides rigid support and guidance for the side wall of the workpiece 500. The driving part 330 directly drives the second stamping rod 320 to move precisely along the axial direction of the second through hole 211 to ensure that the workpiece 500 does not shift or deform during lateral punching.
[0048] Furthermore, the synchronous action of the first stamping rod 310 and the second stamping rod 320 allows the workpiece 500 to be punched while it is being trimmed, thereby increasing processing efficiency.
[0049] In this embodiment, the drive unit 330 can be a hydraulic cylinder, a pneumatic cylinder, or other types, and can be flexibly configured according to usage requirements. This embodiment does not limit this.
[0050] In this embodiment, there are multiple second through holes 211, second stamping rods 320 and driving parts 330, which can be flexibly set according to the processing requirements of workpiece 500. This embodiment does not limit this.
[0051] like Figure 2 , Figure 3 and Figure 4 As shown, the second abutment structure 210 also has a third through hole 212 corresponding to the punching portion of the workpiece 500. The third through hole 212 and the first through hole 111 are coaxially arranged. The coaxial arrangement of the third through hole 212 and the first through hole 111 prevents the first punching rod 310 from bending or swaying due to unilateral force during the punching process. Furthermore, the coaxial constraint of the third through hole 212 and the first through hole 111 enhances the punching stability and reduces the wear of the first punching rod 310.
[0052] like Figure 2 , Figure 3 and Figure 4As shown, the lower die 200 is provided with a first unloading hole 220. One end of the first unloading hole 220 is connected to the third through hole 212, and the other end is connected to the outside, so that the punching waste of the workpiece 500 can be discharged through the first unloading hole 220. After the first punching rod 310 completes the punching, the waste can slide out of the die quickly through the third through hole 212 and the first unloading hole 220, avoiding the problem of the die getting stuck due to waste accumulation. At the same time, this design separates the chip removal path from the processing area of the workpiece 500, which not only ensures the stability of continuous stamping operation (reducing the frequency of downtime for chip removal), but also optimizes the waste collection efficiency through gravity guidance, significantly improving the reliability of the die and the pace of mass production.
[0053] In this embodiment, the number of first discharge holes 220 can be one or more, and can be flexibly set according to design requirements. This embodiment does not limit this.
[0054] In this embodiment, the first unloading hole 220 is a through hole extending along the height direction of the lower die 200. This facilitates processing and reduces the residence time of waste material in the first unloading hole 220, thereby reducing the probability of the first unloading hole 220 becoming clogged.
[0055] In this preferred embodiment, the diameter of the first discharge hole 220 is larger than the diameter of the third through hole 212, so as to further reduce the probability of the first discharge hole 220 being blocked.
[0056] like Figure 2 , Figure 5 and Figure 6 As shown, the second abutment structure 210 also has a second unloading hole 213 corresponding to the punched portion of the workpiece 500. The second unloading hole 213 is connected to the outside so that the punching waste from the workpiece 500 can be discharged through the second unloading hole 213. Since the workpiece 500 is an irregularly shaped part, the height of the part to be punched on the workpiece 500 is relatively high, resulting in a long distance between this part of the workpiece 500 and the lower die 200, making it difficult to process through holes at this location. Therefore, the second unloading hole 213 is directly provided in the second abutment structure 210, and the waste is directly discharged to the outside of the second abutment structure 210 through the second unloading hole 213, avoiding the problem of waste retention causing the die to jam.
[0057] In this embodiment, the number of second unloading holes 213 can be one or more, and can be flexibly set according to the shape of the workpiece 500. This embodiment does not limit this.
[0058] In a preferred embodiment, the second discharge hole 213 has an inclined surface 214, which slopes downward from the inside to the outside of the second abutment structure 210. The presence of the inclined surface 214 facilitates the rapid discharge of waste material through the second discharge hole 213 under gravity, reducing the probability of blockage.
[0059] like Figure 3 and Figure 5 As shown, the first abutting structure 110 is slidably connected to the upper mold 100 along the height direction of the upper mold 100; the first abutting structure 110 can move between a first position and a second position. When the first abutting structure 110 is in the first position, the bottom of the first stamping rod 310 is located inside the first through hole 111. When the first abutting structure 110 is in the second position, the bottom of the first stamping rod 310 is located outside the first through hole 111.
[0060] like Figure 1 As shown, the top of the first abutting structure 110 is provided with a first guide post 120, and the first abutting structure 110 is slidably connected to the upper mold 100 through the first guide post 120. The first guide post 120 on the top of the first abutting structure 110 and its slidable connection with the upper mold 100 guide the movement of the first abutting structure 110 in the height direction, ensuring that the first abutting structure 110 slides smoothly.
[0061] Correspondingly, the upper mold 100 has a guide hole, and the first guide post 120 is slidably disposed in the guide hole to realize the sliding connection between the first abutting structure 110 and the upper mold 100.
[0062] In this embodiment, multiple first guide posts 120 can be provided to further increase the smoothness of the sliding of the first abutment structure 110. It should be noted that the number of first guide posts 120 can be flexibly set according to actual usage requirements, and this embodiment does not limit this.
[0063] like Figure 1 , Figure 3 and Figure 5 As shown, a connecting plate 150 is provided at the top of the first guide post 120, and the connecting plate 150 is connected to the upper mold 100 through an elastic element 130. When the upper mold 100 and the lower mold 200 are closed, during the process of the first abutting structure 110 moving from the first position to the second position, the connecting plate 150 compresses the elastic element 130, and the elastic element 130 stores elastic potential energy; after the upper mold 100 and the lower mold 200 are separated, the elastic element 130 releases the elastic potential energy, causing the first abutting structure 110 to move from the second position to the first position. When the upper mold 100 presses down, the first abutting structure 110 is initially in the first position, using the contact pressure between its end face and the workpiece 500 to press the workpiece 500, and then slides to the second position as the pressure increases. At this time, the first punching rod 310 fully extends out of the first through hole 111 to perform the punching action, and the cutter 400 cuts the excess part of the workpiece 500. This design, through phased pressure application and decoupling of actions, ensures the rigid fixation of the workpiece 500 before punching, while avoiding interference from the punching and shearing reaction forces on the stability of the workpiece 500, thus significantly improving the quality of the punched cross-section and the shearing quality.
[0064] In this embodiment, there are multiple elastic elements 130, which can be flexibly set according to actual usage requirements. This embodiment does not limit this.
[0065] In this embodiment, the elastic element 130 is preferably a spring.
[0066] like Figure 1 As shown, the upper mold 100 is provided with a second guide post 140, and the connecting plate 150 is slidably fitted to the second guide post 140. By setting the second guide post 140 in the upper mold 100, the connecting plate 150 is kept horizontal during the up and down movement, eliminating the problem of asynchronous movement of multiple first guide posts 120 caused by the tilt of the connecting plate 150.
[0067] Some embodiments of this application also provide a trimming die, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 The aforementioned includes a punching and trimming assembly.
[0068] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0069] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
[0070] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A punching and trimming assembly, used in a trimming die, characterized in that, include: A first abutting structure is provided on the upper mold; the first abutting structure is provided with a first through hole corresponding to the part of the workpiece to be punched at the top; The second abutting structure is provided in the lower mold for placing the workpiece; the second abutting structure is provided with a second through hole corresponding to the punching part of the side wall of the workpiece; The cutting tool is positioned around the first abutment structure; A stamped part includes a first stamping rod, a second stamping rod, and a driving part; the first stamping rod is disposed on the upper die, and one end passes through the first through hole to punch the top of the workpiece; the driving part is disposed on the lower die, and the output end is connected to the second stamping rod to drive the second stamping rod to pass through the second through hole to punch the side wall of the workpiece.
2. A pierce trim assembly as claimed in claim 1 wherein, The second abutting structure is further provided with a third through hole corresponding to the punching part of the workpiece, and the third through hole and the first through hole are coaxially arranged.
3. A pierce trim assembly as claimed in claim 2 wherein, The lower die is provided with a first unloading hole. One end of the first unloading hole is connected to the third through hole, and the other end is connected to the outside, so that the punching waste of the workpiece can be discharged through the first unloading hole.
4. A pierce trim assembly as claimed in claim 3 wherein, The second abutting structure is further provided with a second discharge hole corresponding to the punching part of the workpiece. The second discharge hole is connected to the outside so that the punching waste of the workpiece can be discharged through the second discharge hole.
5. A pierce trim assembly as claimed in claim 4 wherein, The second discharge hole has an inclined surface, which slopes downward from the inside to the outside of the second abutment structure; And / or, the diameter of the first discharge hole is larger than the diameter of the third through hole.
6. The piercer and trimmer assembly of claim 1 wherein, The first abutting structure is slidably connected to the upper mold along the height direction of the upper mold; The first abutting structure can move between a first position and a second position. When the first abutting structure is in the first position, the bottom of the first stamping rod is located inside the first through hole. When the first abutting structure is in the second position, the bottom of the first stamping rod is located outside the first through hole.
7. A pierce trim assembly as claimed in claim 6 wherein, The top of the first abutting structure is provided with a first guide post, and the first abutting structure is slidably connected to the upper mold through the first guide post.
8. A pierce trim assembly as claimed in claim 7 wherein, The top of the first guide post is provided with a connecting plate, and the connecting plate is connected to the upper mold by an elastic element.
9. A pierce trim assembly as claimed in claim 8 wherein, The upper mold is provided with a second guide post, and the connecting plate is slidably fitted to the second guide post; And / or, a limiting block is provided between the upper mold and the lower mold to restrict the movement of the upper mold.
10. An edging die characterized by, Includes the punching and trimming assembly as described in any one of claims 1-9.