Trimming assembly of trimming die and trimming die
By introducing first and second abutment structures into the trimming die, the workpiece is plastically compressed in the early stage of die closing, which solves the problems of burrs and cut deformation in the trimming die during the shearing process and achieves a high-quality cutting effect.
Patent Information
- Application Number
- CN202520956640.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-12
- Estimated Expiration
- 2035-05-15
AI Technical Summary
Existing trimming dies are prone to causing burrs or cut deformation when shearing workpieces.
The cutting assembly using a cutting die includes first and second abutment structures. The cutting component can move in the height direction of the lower die. In the initial stage of die closing, pressure is applied to the workpiece through the abutment structure to plastically compress it. Subsequently, the cutting component performs shearing, reducing the elastic deformation of the workpiece during the cutting process.
It significantly improves the quality of the cut, reduces burrs and cut deformation, and improves processing accuracy and efficiency.
Smart Images
Figure CN224224085U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, and in particular to a cutting edge component and a cutting edge 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] The cutting component of the cutting die is used to cut off the excess edge material of the workpiece. In related technologies, the workpiece is prone to burrs or cut deformation due to springback. Utility Model Content
[0004] This application discloses a cutting component and a cutting die for a cutting die, in order to solve the technical problem in the related art that cutting workpieces easily leads to burrs or cut deformation.
[0005] To solve the above problems, the present invention adopts the following technical solution:
[0006] In a first aspect, this application provides a cutting assembly for a cutting die, comprising:
[0007] The first abutment structure is located in the upper mold;
[0008] The second abutting structure is provided in the lower mold; after the lower mold and the upper mold are closed, the first abutting structure and the second abutting structure respectively stop the workpiece;
[0009] The cutting part is set in the lower mold and can move between a first position and a second position along the height direction of the lower mold;
[0010] During the process of the lower mold and the upper mold closing, the cutting part moves from the first position to the second position.
[0011] In some designs, the cutting component includes a tool structure and a connecting block;
[0012] The connecting block and the lower die are slidably connected along the height direction of the lower die. The cutting tool structure is set on the connecting block, and the top of the cutting tool structure has a cutting edge.
[0013] In some designs, the bottom of the connecting block is provided with a first guide post, and the connecting block is slidably connected to the lower mold through the first guide post;
[0014] And / or, the connecting block is connected to the lower mold via a first elastic element.
[0015] In some schemes, there are multiple first abutting structures and multiple second abutting structures, forming multiple workstations for stopping the workpiece, and the multiple workstations are arranged in multiple rows;
[0016] At least one cutting component is provided between any two adjacent workstations.
[0017] In some designs, the first abutting structure is slidably connected to the upper mold along the height direction of the upper mold, and the bottom of the first abutting structure extends beyond the bottom of the upper mold.
[0018] In some designs, a second 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 second guide post.
[0019] In some designs, a connecting plate is provided at the top of the second guide post, and the connecting plate is connected to the upper mold by a second elastic element.
[0020] In some designs, the upper mold is equipped with a third guide post, and the connecting plate is slidably fitted to the third guide post;
[0021] And / or, the bottom of the upper die and / or the top of the lower die are provided with stroke limit rods to limit the downward distance of the upper die.
[0022] In some designs, an auxiliary rod is provided at the bottom of the connecting plate;
[0023] After the upper and lower molds are closed, the auxiliary rod stops against the top of the lower mold; or, the top of the lower mold is provided with a protrusion, and after the upper and lower molds are closed, the auxiliary rod stops against the protrusion.
[0024] Secondly, this application discloses a trimming mold, including the trimming component of the trimming mold in the first aspect.
[0025] The technical solution adopted in this utility model can achieve the following beneficial effects:
[0026] In the trimming die assembly of this application, the cutting component is initially positioned in the first (high) position during mold closing, ensuring that the first and second contact structures preferentially contact the workpiece to apply pressure. This causes plastic compression of the workpiece surface before shearing, reducing the workpiece's elasticity. As mold closing continues, the pressure from the upper die is transmitted through the workpiece to the cutting component, causing it to move to the second position to perform shearing. During the shearing process, the plastic compression of the workpiece surface reduces burrs and cut deformation, significantly improving cut quality. Attached Figure Description
[0027] 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.
[0028] Figure 1 This is an isometric view of the trimming die disclosed in some embodiments of this application;
[0029] Figure 2 This is a cross-sectional view of the trimming die disclosed in some embodiments of this application. Figure 1 ;
[0030] Figure 3 yes Figure 2 Enlarged view of point A in the middle;
[0031] Figure 4 This is a cross-sectional view of the trimming die disclosed in some embodiments of this application. Figure 2 ;
[0032] Figure 5 This is a side view of the hidden portion structure of the cutting die disclosed in some embodiments of this application;
[0033] Figure 6 yes Figure 5 Enlarged view of point B in the middle;
[0034] Figure 7 These are isometric views of the cut parts disclosed in some embodiments of this application;
[0035] Figure 8 This is a schematic diagram of a workpiece disclosed in some embodiments of this application.
[0036] In the picture:
[0037] 100 - Upper mold, 110 - First abutment structure, 111 - Second guide post, 120 - Connecting plate, 121 - Auxiliary rod, 130 - Second elastic element, 140 - Third guide post;
[0038] 200 - Lower mold, 210 - Second abutment structure, 220 - Protrusion, 230 - Stroke limit rod;
[0039] 300-Cutting component, 310-Connecting block, 311-First guide post, 320-Tool structure, 321-Blade edge, 330-First elastic element;
[0040] 400 - Workpiece. Detailed Implementation
[0041] 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.
[0042] 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.
[0043] During use, the applicant discovered that in the process of shearing excess edge material of the workpiece by the existing shearing die, the workpiece is elastically compressed and bent under the action of shearing force in the initial stage of cutting, storing elastic potential energy. When the shear stress exceeds the yield strength of the material, the material undergoes irreversible plastic flow. After shearing is completed, the energy stored in the elastic deformation zone will be released, forcing the material to partially return to its original shape. Therefore, the workpiece is prone to burrs or cut deformation due to springback.
[0044] The following is in conjunction with the appendix Figures 1 to 8 The present application provides a detailed description of the edge trimming component and edge trimming mold through specific embodiments and application scenarios.
[0045] Some embodiments of this application disclose a cutting assembly for a cutting mold, including a first abutting structure 110, a second abutting structure 210, and a cutting element 300.
[0046] like Figure 2 and Figure 3 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. 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 400, forcing the workpiece 400 to enter a stable stress state before cutting, effectively suppressing elastic slippage and stress release during the shearing process.
[0047] In this embodiment, the workpiece 400 is as follows: Figure 8 As shown. Accordingly, workpiece 400 is not limited to... Figure 8The shape.
[0048] like Figure 2 and Figure 5 As shown, the cutting element 300 is disposed on the lower mold 200. After the upper mold 100 and the lower mold 200 are closed, the upper mold 100 continuously applies downward pressure to cause the cutting element 300 to shear the excess edge material of the workpiece 400.
[0049] like Figure 2 and Figure 5 As shown, the cutting element 300 can move between a first position and a second position along the height direction of the lower mold 200. During the mold closing process of the lower mold 200 and the upper mold 100, the cutting element 300 moves from the first position to the second position. In the initial stage of mold closing, the cutting element 300 is located in the first position (high position), ensuring that the first and second abutment structures 210 preferentially contact the workpiece 400 to apply pressure to the workpiece 400, causing plastic compression of the surface layer of the workpiece 400 before shearing, reducing the elasticity of the workpiece 400. As mold closing continues, the pressure of the upper mold 100 is transmitted to the cutting element 300 through the workpiece 400, causing the cutting element 300 to move down to the second position to perform shearing. During the shearing process of the workpiece 400, due to the plastic compression of the surface layer of the workpiece 400, the burrs and cut deformation generated by the workpiece 400 during the cutting process are reduced, significantly improving the cut quality.
[0050] like Figure 7 As shown, the cutting component 300 includes a tool structure 320 and a connecting block 310. The connecting block 310 is slidably connected to the lower die 200 along the height direction of the lower die 200. The sliding fit between the connecting block 310 and the lower die 200 provides high-rigidity guidance for the tool, ensuring the straightness of the shearing trajectory.
[0051] like Figure 7 As shown, the tool structure 320 is disposed on the connecting block 310, and the top of the tool structure 320 has a cutting edge 321. The way the tool structure 320 is disposed on the connecting block 310 facilitates replacement and maintenance of the tool structure 320. The cutting edge 321 at the top of the tool structure 320 is used to shear excess portions of the workpiece 400.
[0052] In this embodiment, the number of tool structures 320 can be several, such as 1, 2, 3 or more, which can be flexibly set according to the needs of the workpiece 400. This embodiment does not limit this.
[0053] like Figure 4As shown, the bottom of the connecting block 310 is provided with a first guide post 311, and the connecting block 310 is slidably connected to the lower die 200 through the first guide post 311. The first guide post 311 at the bottom of the connecting block 310 and its slidable connection with the lower die 200 guide the movement of the connecting block 310 in the height direction, ensuring smooth sliding of the connecting block 310 and also ensuring the straightness of the shearing trajectory of the tool structure 320.
[0054] Correspondingly, the lower mold 200 has a first guide hole, and the first guide post 311 is slidably disposed in the first guide hole to realize the sliding connection between the connecting block 310 and the lower mold 200.
[0055] In this embodiment, multiple first guide posts 311 can be provided to further increase the smoothness of the sliding of the connecting block 310 and the straightness of the shearing trajectory of the tool structure 320. It should be noted that the number of first guide posts 311 can be flexibly set according to actual usage requirements, and this embodiment does not limit this.
[0056] like Figure 2 As shown, the connecting block 310 is connected to the lower mold 200 via a first elastic element 330. During the mold closing process of the upper mold 100 and the lower mold 200, the connecting block 310 compresses the first elastic element 330 as it moves from the first position to the second position, causing the first elastic element 330 to store elastic potential energy. After the upper mold 100 and the lower mold 200 separate, the first elastic element 330 releases its elastic potential energy, causing the connecting block 310 to move from the second position to the first position.
[0057] In this embodiment, multiple first elastic elements 330 can be provided. It should be noted that the number of first elastic elements 330 can be flexibly set according to actual usage requirements, and this embodiment does not limit this.
[0058] In this preferred embodiment, the first elastic element 330 is a spring.
[0059] like Figure 5 and Figure 6 As shown, there are multiple first abutment structures 110 and multiple second abutment structures 210, forming multiple workstations for stopping the workpieces 400. These multiple workstations are arranged in multiple rows. The multiple first abutment structures 110 and multiple second abutment structures 210 are correspondingly distributed in the arrayed cutting area of the cutting mold, which can complete the synchronous positioning and shearing of multiple workpieces 400 in a single mold closing, thereby increasing processing efficiency.
[0060] In this preferred embodiment, there are four first abutting structures 110 and four second abutting structures 210, forming four stations for stopping the workpiece 400. The four stations are arranged in two rows, with two stations in each row. Correspondingly, the number of first abutting structures 110 and two abutting structures 210 can also be other, and can be flexibly set according to different usage requirements. This embodiment does not limit this.
[0061] like Figure 6 As shown, at least one cutting element 300 is provided between any two adjacent workstations. The cutting elements 300 provided between adjacent workstations are arranged in an alternating manner, so that multiple rows of workpieces 400 can be cut simultaneously in a single mold closing, thereby increasing processing efficiency.
[0062] like Figure 2 As shown, the first abutting structure 110 is slidably connected to the upper mold 100 along the height direction of the upper mold 100, and the bottom of the first abutting structure 110 extends beyond the bottom of the upper mold 100. During the mold closing process, the first abutting structure 110 first abuts against the top of the workpiece 400, fixing the position of the workpiece 400 in the initial stage of mold closing and preventing the workpiece 400 from moving or shifting. As mold closing continues, the first abutting structure 110 gradually moves upward and continuously applies pressure to the workpiece 400, eliminating positioning deviations caused by thickness tolerances or warping deformation of the workpiece 400.
[0063] like Figure 2 As shown, the top of the first abutting structure 110 is provided with a second guide post 111, and the first abutting structure 110 is slidably connected to the upper mold 100 through the second guide post 111. The second guide post 111 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.
[0064] Correspondingly, the upper mold 100 has a second guide hole, and the second guide post 111 is slidably disposed in the second guide hole to realize the sliding connection between the first abutment structure 110 and the upper mold 100.
[0065] In this embodiment, multiple second guide posts 111 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 second guide posts 111 can be flexibly set according to actual usage requirements, and this embodiment does not limit this.
[0066] like Figure 1 , Figure 2 and Figure 4As shown, a connecting plate 120 is provided at the top of the second guide post 111, and the connecting plate 120 is connected to the upper mold 100 through a second elastic element 130. During the mold closing process of the upper mold 100 and the lower mold 200, the first abutting structure 110 moves upward and compresses the second elastic element 130 through the connecting plate 120, storing elastic potential energy. After the upper mold 100 and the lower mold 200 separate, the second elastic element 130 releases the elastic potential energy, causing the first abutting structure 110 to move downward and return to its initial position. Since there are multiple first abutting structures 110, each first abutting structure 110 can also be provided with multiple second guide posts 111. By setting the connecting plate 120 to connect with multiple second guide posts 111, the multiple first abutting structures 110 can better return to their initial positions after the upper mold 100 and the lower mold 200 separate.
[0067] In this embodiment, there are multiple second elastic elements 130, which can be flexibly set according to actual usage requirements. This embodiment does not limit this.
[0068] In this embodiment, the second elastic element 130 is preferably a spring.
[0069] like Figure 1 , Figure 2 and Figure 4 As shown, the upper mold 100 is provided with a third guide post 140, and the connecting plate 120 is slidably fitted to the third guide post 140. By setting the third guide post 140 in the upper mold 100, the connecting plate 120 is kept horizontal during the up and down movement, eliminating the problem of asynchronous movement of multiple first abutment structures 110 caused by the tilt of the connecting plate 120.
[0070] like Figure 1 and Figure 4 As shown, the bottom of the upper mold 100 and / or the top of the lower mold 200 are provided with stroke limiting rods 230 to limit the downward distance of the upper mold 100. Through the rigid contact between the stroke limiting rods 230 and the upper mold 100 and / or the lower mold 200, the downward endpoint of the upper mold 100 is precisely controlled, forcibly limiting the maximum compression stroke of the cutting part 300 when the mold is closed, thus preventing excessive movement of the upper mold 100 and potential damage to the workpiece 400.
[0071] In some embodiments, the travel limit rod 230 is disposed at the bottom of the upper mold 100.
[0072] In some embodiments, the travel limit rod 230 is disposed on the top of the lower die 200.
[0073] In some embodiments, the bottom of the upper mold 100 and the top of the lower mold 200 are respectively provided with stroke limiting rods 230.
[0074] like Figure 1As shown, the bottom of the connecting plate 120 is provided with an auxiliary rod 121; after the upper mold 100 and the lower mold 200 are closed, the auxiliary rod 121 abuts against the top of the lower mold 200; or, the top of the lower mold 200 is provided with a protrusion 220, and after the upper mold 100 and the lower mold 200 are closed, the auxiliary rod 121 abuts against the protrusion 220. During the process of the upper mold 100 and the lower mold 200 closing, the auxiliary rod 121 abuts against the top of the lower mold 200 or the protrusion 220. As the mold closing continues, the auxiliary rod 121 causes the connecting plate 120 to move upward, forcing the first abutting structure 110 to apply a preset gradient pressure when it contacts the workpiece 400.
[0075] Some embodiments of this application also disclose a trimming die, such as Figure 1 , Figure 2 , 4 and Figure 5 As shown, a cutting assembly including a cutting die is included.
[0076] 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.
[0077] 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.
[0078] 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 cutting assembly for a cutting die, characterized in that, include: The first abutment structure is located in the upper mold; A second abutting structure is provided on the lower mold; after the lower mold and the upper mold are closed, the first abutting structure and the second abutting structure respectively stop the workpiece. The cutting component is disposed on the lower mold and can move between a first position and a second position along the height direction of the lower mold; During the process of the lower mold and the upper mold closing, the cutting component moves from the first position to the second position.
2. The edge-cutting assembly of an edge-cutting mold according to claim 1, characterized in that, The cutting component includes a cutting tool structure and a connecting block; The connecting block is slidably connected to the lower mold along the height direction of the lower mold, the cutting tool structure is disposed on the connecting block, and the top of the cutting tool structure has a cutting edge.
3. The edge-cutting assembly of an edge-cutting mold according to claim 2, characterized in that, The bottom of the connecting block is provided with a first guide post, and the connecting block is slidably connected to the lower mold through the first guide post; And / or, the connecting block is connected to the lower mold via a first elastic element.
4. The edge-cutting assembly of an edge-cutting mold according to claim 2, characterized in that, There are multiple first abutting structures and multiple second abutting structures, forming multiple workstations for stopping the workpiece, and the multiple workstations are arranged in multiple columns; At least one cutting component is provided between any two adjacent workstations.
5. The edge-cutting assembly of an edge-cutting mold according to claim 1, characterized in that, The first abutting structure is slidably connected to the upper mold along the height direction of the upper mold, and the bottom of the first abutting structure extends beyond the bottom of the upper mold.
6. The edge-cutting assembly of an edge-cutting mold according to claim 5, characterized in that, The top of the first abutting structure is provided with a second guide post, and the first abutting structure is slidably connected to the upper mold through the second guide post.
7. The edge-cutting assembly of an edge-cutting mold according to claim 6, characterized in that, The top of the second guide post is provided with a connecting plate, and the connecting plate is connected to the upper mold through a second elastic element.
8. The edge-cutting assembly of an edge-cutting mold according to claim 7, characterized in that, The upper mold is provided with a third guide post, and the connecting plate is slidably fitted to the third guide post; And / or, the bottom of the upper mold and / or the top of the lower mold are provided with a stroke limit rod to limit the downward distance of the upper mold.
9. The edge-cutting assembly of an edge-cutting mold according to claim 7, characterized in that, An auxiliary rod is provided at the bottom of the connecting plate; After the upper mold and the lower mold are closed, the auxiliary rod abuts against the top of the lower mold; or, the top of the lower mold is provided with a protrusion, and after the upper mold and the lower mold are closed, the auxiliary rod abuts against the protrusion.
10. A trimming mold, characterized in that, The trimming assembly includes the trimming die as described in any one of claims 1-9.