Casting waste punching die
By using a combination of multiple positioning blocks and elastic pressure blocks in the die for punching casting scrap, and combining them with an alignment tool, the high cost and low flexibility issues caused by contour positioning are solved, achieving efficient and low-cost cutting of casting scrap.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-31
AI Technical Summary
In the existing process of punching casting scrap, the contour positioning method results in high processing accuracy requirements, long cycle time, large area, increased punching cost and inflexibility.
A combination of multiple positioning blocks and elastic pressure blocks is used for positioning, along with multiple aligned cutting tools, to replace the overall contour positioning structure, achieving flexible positioning and efficient cutting.
It reduces punching costs, improves processing accuracy and flexibility, ensures workpiece quality, and enhances the adaptability and service life of the mold through detachable connections.
Smart Images
Figure CN224058668U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of punching and cutting technology, and in particular to a punching die for casting scrap. Background Technology
[0002] After die casting, waste materials such as slag and slag bales need to be removed by punching. Current punching processes for special workpieces typically employ contour positioning, for example, by setting contoured surfaces at the upper and lower die cores that match the upper and lower surfaces of the workpiece to ensure proper positioning during punching, thereby guaranteeing punching quality.
[0003] However, this method of setting contoured surfaces for the upper and lower mold cores requires high machining accuracy, has a long cycle time, and involves a large machining area, which increases the punching cost. Utility Model Content
[0004] One objective of this invention is to provide a die for punching casting scrap that can reduce punching costs.
[0005] Another objective of this invention is to ensure the quality of the workpiece.
[0006] A further objective of this invention is to improve the flexibility of the entire punching die.
[0007] An embodiment of this utility model provides a casting scrap punching die, comprising:
[0008] The lower die assembly includes a lower die template and a plurality of positioning blocks fixed to the lower die template. The plurality of positioning blocks are used to jointly form a first positioning surface that matches the bottom surface of the workpiece to be punched and a second positioning surface that limits the degree of freedom of the workpiece on the horizontal plane.
[0009] The upper mold assembly is vertically movable and includes an upper template, an upper punch cutter fixed to the upper template, and an elastic pressure block. The upper punch cutter corresponds to the position to be cut on the workpiece, and the elastic pressure block has vertical extensibility and is used to be compressed when the mold is closed.
[0010] Optionally, at least two of the positioning blocks have positioning arc surfaces that match the arcuate facade of the workpiece, and all the positioning arc surfaces together form the second positioning surface.
[0011] Optionally, the top surface of each of the positioning blocks is configured to match the bottom surface of the workpiece.
[0012] Optionally, the lower die assembly further includes a lower punch cutter fixed to the lower die plate, the position of which is aligned with the position of the upper punch cutter.
[0013] Optionally, both the upper punch cutter and the lower punch cutter include multiple cutters, each cutter being used to cut multiple positions to be cut.
[0014] Optionally, each of the aforementioned cutting tools is detachably mounted on the upper template or the lower template.
[0015] Optionally, the bottom surface and periphery of the elastic pressure block mate with the workpiece.
[0016] Optionally, the elastic pressure block is detachably disposed at the upper template.
[0017] Optionally, the material of the elastic block is urethane.
[0018] Optionally, the casting scrap punching die further includes a positioning component, which includes a sleeve structure fixed to the upper template and a guide rod structure fixed to the lower template. The guide rod structure is used to extend into the sleeve structure when the die is closed.
[0019] According to the first aspect of this utility model, when positioning the workpiece, a number of positioning blocks are used instead of the original integral contour positioning structure. This saves materials while meeting the positioning requirements, thus reducing punching costs. Furthermore, the segmented multiple positioning blocks are more flexible in use.
[0020] Furthermore, the use of elastic pressure blocks for positioning is simple and convenient, and it is less likely to cause indentations on the workpiece, which helps to ensure the quality of the workpiece.
[0021] According to a second aspect of this utility model, multiple aligned cutting tools are respectively provided at the lower template and the upper template. This shear-type punching tool can more effectively ensure the punching quality.
[0022] Furthermore, each tool is used to cut multiple locations, which can control the total number of tools to prevent them from becoming too numerous, and the length of a single tool to prevent waste in non-cutting areas.
[0023] Furthermore, making both the cutting tool and the elastic pressure block detachable improves the flexibility of the entire punching die. For example, if there is a deviation in the position of the scrap, the position of the cutting tool can be adjusted to adapt, or the elastic pressure block can be easily replaced if it is damaged. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of a casting scrap punching die according to an embodiment of the present invention;
[0025] Figure 2 for Figure 1 A schematic diagram of the casting scrap punching die from another perspective in the embodiment;
[0026] Figure label:
[0027] 100-Casting scrap punching die, 10-Lower die assembly, 11-Lower template, 12-Positioning block, 121-Positioning arc surface, 13-Lower punching cutter, 14-Guide rod structure, 20-Upper die assembly, 21-Upper template, 22-Upper punching cutter, 23-Elastic pressure block, 24-Sleeve structure. Detailed Implementation
[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.
[0029] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0030] Furthermore, to better illustrate the present invention, numerous specific details are set forth in the following detailed embodiments. Those skilled in the art will understand that the present invention can be practiced without certain specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art have not been described in detail in order to highlight the spirit of this disclosure.
[0031] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article indicates that the preceding and following related objects have an "or" relationship.
[0032] In the embodiments of this invention, "multiple" refers to two or more. The descriptions of "first," "second," etc., appearing in the embodiments of this invention are merely illustrative and for distinguishing the objects being described; they do not indicate any order, nor do they imply a specific limitation on the number of entities in the embodiments of this invention, and therefore do not constitute any limitation on the embodiments of this invention.
[0033] Figure 1 This is a schematic diagram of the structure of a casting scrap punching die 100 according to an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram of the casting scrap punching die 100 from another perspective in this embodiment. (See attached diagram.) Figure 1 As shown, in one embodiment, the casting scrap punching die 100 includes a lower die assembly 10 and an upper die assembly 20. The casting scrap punching die 100 is used to cut off the slag head and slag bag of the workpiece. The lower die assembly 10 includes a lower template 11 and a plurality of positioning blocks 12 fixed to the lower template 11. The plurality of positioning blocks 12 are used to jointly form a first positioning surface that matches the bottom surface of the workpiece to be punched and a second positioning surface that limits the degree of freedom of the workpiece on the horizontal plane. The upper die assembly 20 can be vertically raised and lowered and includes an upper template 21, an upper punching blade 22 fixed to the upper template 21, and an elastic pressure block 23. The elastic pressure block 23 can be made of elastic materials such as rubber, silicone, or urethane. The upper punching blade 22 corresponds to the position to be cut on the workpiece, which is the workpiece body and the slag head (or slag bag). The elastic pressure block 23 has vertical extensibility and is used to be compressed when the die is closed. In this embodiment, the upper punching blade 22 may include one or more cutting tools, which is not limited here.
[0034] In this embodiment, several positioning blocks 12 are used to replace the original integral contour positioning structure when positioning the workpiece. This saves materials while meeting the positioning requirements, thus reducing punching costs. In addition, the segmented multiple positioning blocks 12 are more flexible in use.
[0035] Furthermore, the use of elastic pressure block 23 for positioning is simple and convenient, and it is less likely to produce indentations on the workpiece, which helps to ensure the quality of the workpiece.
[0036] In one embodiment, such as Figure 1 As shown, at least two of the positioning blocks 12 have positioning arc surfaces 21 that match the arcuate facade of the workpiece, and all the positioning arc surfaces 21 together form the second positioning surface. The top surface of each positioning block 12 is configured to match the bottom surface of the workpiece, that is, the top surfaces of all the positioning blocks 12 together form the first positioning surface.
[0037] In a further embodiment, the lower die assembly 10 further includes a lower punch cutter 13 fixed to the lower die plate 11, the position of the lower punch cutter 13 being aligned with the position of the upper punch cutter 22. Both the upper punch cutter 22 and the lower punch cutter 13 include multiple cutters, each cutter being used to cut multiple positions to be cut. Here, one cutter can simultaneously cut two or three adjacent positions to be cut (that is, the cutting positions of the workpiece are spaced apart), for example, several relatively close positions to be cut can be cut with one cutter, and the total length of each cutter is less than a certain value.
[0038] When the workpiece is placed on the lower die assembly 10, the workpiece not only matches the positioning surface of the positioning block 12, but the top surface of the lower punch cutter 13 also needs to match the position to be switched on the workpiece, that is, the lower punch cutter 13 also plays a part of the supporting role.
[0039] In this embodiment, multiple aligned cutting tools are set at the lower template 11 and the upper template 21 respectively. This shear-type punching tool can more effectively ensure the punching quality. Each tool is used to cut multiple positions to be cut, which can control the total number of tools to not be too many, and the length of a single tool will not be too long, thus avoiding waste in non-cutting areas.
[0040] In one embodiment, each of the cutting tools is detachably disposed on the upper template 21 or the lower template 11. The elastic pressure block 23 is detachably disposed on the upper template 21. For example, a detachable connection is formed by fasteners.
[0041] In this embodiment, both the cutting tool and the elastic pressure block 23 are designed to be detachably connected, which helps to improve the flexibility of the entire punching die. For example, when there is a deviation in the position of the scrap, the position of the cutting tool can be adjusted to adapt, or the elastic pressure block 23 can be easily replaced when it is damaged.
[0042] In one embodiment, the bottom surface and periphery of the elastic pressure block 23 mate with the workpiece. This limits the amount of deformation of the elastic pressure block 23 along its periphery, thereby ensuring that it effectively performs its vertical buffering function.
[0043] Furthermore, when the elastic block 23 is made of urethane, its elastic properties can well meet the buffer elasticity requirements during punching.
[0044] In a further embodiment, the casting scrap punching die 100 also includes a positioning component, which includes a sleeve structure 24 fixed to the upper template 21 and a guide rod structure 14 fixed to the lower template 11. The guide rod structure 14 is used to extend into the sleeve structure 24 when the die is closed, thereby playing a guiding role during die closing and punching.
[0045] The aforementioned molds can be designed intelligently using advanced CAD / CAM / CAE technologies, enabling digital design and simulation analysis to improve design accuracy and efficiency while reducing trial runs. For example, CAE simulation analysis of the die-casting filling and solidification process can optimize the material head position and punching scheme. Then, advanced machining equipment and processes such as five-axis machining centers and EDM are employed to achieve high-precision machining, improving the mold's machining accuracy and surface quality, and ensuring the sharpness and dimensional accuracy of the punching edge. For the tool materials, higher strength, hardness, wear resistance, and toughness mold steel materials can be used, such as the new hot-work mold steel XGYZ01 developed by Xinggang, to meet the needs of high-speed punching and large die-casting molds. Furthermore, surface treatment technologies such as nitriding, hard chrome plating, and PVD can be used to strengthen the surface, improving the mold's surface hardness, wear resistance, and corrosion resistance, extending its service life. In addition, the aforementioned punching molds can be equipped with automated loading and unloading devices and punching equipment to achieve automated production of die-casting material head punching, improving production efficiency and product quality stability while reducing labor costs.
[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A castings scrap punch die characterized by, The utility model relates to a die cutting device, comprising: a lower die assembly comprising a lower die plate and a plurality of positioning blocks fixed to the lower die plate, the plurality of positioning blocks being configured to collectively form a first positioning surface matching a bottom surface of a workpiece to be die cut and a second positioning surface defining a degree of freedom of the workpiece in a horizontal plane; an upper die assembly vertically movable and comprising an upper die plate, an upper die cutter fixed to the upper die plate and corresponding to a cutting position of the workpiece, and an elastic pressing block having vertical elasticity and being configured to be compressed when the die is closed.
2. The casting scrap punch die of claim 1, wherein, At least two of the positioning blocks have positioning arc surfaces matching arc vertical surfaces of the workpiece, and all the positioning arc surfaces collectively form the second positioning surface.
3. The casting scrap punch die of claim 2, wherein, A top surface of each of the positioning blocks is configured to match the bottom surface of the workpiece.
4. The casting scrap punch die according to any one of claims 1 to 3, characterized in that The lower die assembly further comprises a lower die cutter fixed to the lower die plate, the lower die cutter being aligned with the upper die cutter in position.
5. The casting scrap punch die of claim 4, wherein, The upper die cutter and the lower die cutter each comprise a plurality of cutters, each of the cutters being configured to cut a plurality of cutting positions.
6. The casting scrap punch die of claim 5, wherein, Each of the cutters is detachably arranged on the upper die plate or the lower die plate.
7. The casting scrap punch die of claim 1 wherein, A bottom surface and a peripheral side of the elastic pressing block are configured to cooperate with the workpiece.
8. The casting scrap punch die of claim 1, wherein, The elastic pressing block is detachably arranged on the upper die plate.
9. The casting scrap punch die of claim 1 wherein, The elastic pressing block is made of urethane.
10. The casting scrap punch die of claim 1, wherein, The utility model further comprises a positioning assembly comprising a sleeve structure fixed to the upper die plate and a guide rod structure fixed to the lower die plate, the guide rod structure being configured to extend into the sleeve structure when the die is closed.