Combined blanking die
By designing a modular blanking die, and utilizing a combination of large and small die assemblies, the problems of insufficient flexibility and high maintenance costs of traditional dies are solved, enabling rapid adaptation to market demands and efficient production.
Patent Information
- Application Number
- CN202423258477.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional molds, when faced with changes in parts and products, rely on a structure that involves replacing inserts, which suffers from insufficient flexibility, high change costs, and high maintenance costs.
A modular blanking die is adopted, including a large die assembly and a detachable small die assembly. By installing the small die assembly on the large die assembly to replace the insert, quick installation and flexible adjustment are achieved, reducing production costs and maintenance expenses.
This enabled the molds to quickly adapt to changes in market demand, reduced production and maintenance costs, improved processing accuracy and efficiency, and reduced mold replacement and debugging time.
Smart Images
Figure CN223642607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold design, specifically to a combined blanking mold. Background Technology
[0002] In the automotive manufacturing industry, traditional mold bases generally use an embedded fixed insert structure. When dealing with parts such as front and rear longitudinal beams, which have the same main body but differ only in the structure at both ends, it is usually necessary to replace multiple sets of molds or replace the corresponding fitting inserts on the existing molds for processing. This insert replacement structure has many drawbacks:
[0003] Firstly, in the traditional process, a set of molds is developed for each of the structural changes at both ends of the main body of the part. That is, the overall mold changes with the changes in the inserts. Although this method can effectively achieve the processing purpose, it increases production costs. Moreover, the design, manufacturing and debugging of each set of molds requires a lot of investment. When developing new models, companies have to bear huge mold purchase and maintenance costs, which puts pressure on cash flow. Secondly, the embedded fixed inserts are difficult to quickly remove from the upper and lower mold bases and are not convenient for fine adjustment. This is not conducive to the high-precision processing of parts and lacks flexibility, making it impossible to quickly adapt to changes in market demand. Thirdly, the maintenance cost of multiple sets of molds is high. The increase in molds and the increase in regular maintenance and inspection costs increase the company's operating costs. Compatibility issues between different molds may also lead to additional maintenance work, increasing complexity. Fourthly, in order to achieve a tight fit between the inserts and the lower mold base, the positional space requirements for the upper and lower mold bases for installing the inserts are very high, which increases processing costs and difficulty.
[0004] In conclusion, the existing molds still need further improvement to meet actual usage requirements. Utility Model Content
[0005] This utility model provides a combined blanking die, which mainly solves the problems of insufficient flexibility, high change costs, and high maintenance costs associated with the traditional die's method of replacing inserts when dealing with changes in part products. The main technical solution adopted is as follows:
[0006] A combined blanking die includes a large die assembly and a small die assembly detachably assembled onto the large die assembly. The large die assembly includes an upper die base, a lower die base, and a punching mechanism. The lower die base has a material support platform, and a discharge cavity communicating with the outside is formed at the bottom of the material support platform. The upper die base is elastically connected to a large pressing device corresponding to the material support platform. Both the material support platform and the large pressing device have clearance spaces at their left and right ends for mounting the small die assembly, and the lower die base has a clearance space formed for guiding the discharge. The cavity has a first through hole; a small mold assembly, which has at least two parts, each located in the clearance space at the left and right ends of the material support platform and the large pressing device; the small mold assembly includes a lower mold assembly detachably disposed on the lower mold base and an upper mold assembly detachably disposed on the upper mold base; the upper mold assembly includes an upper mold insert and a small pressing device, and the lower mold assembly includes a lower mold insert located beside the first through hole; when the upper mold base moves downward relative to the lower mold base, the small pressing device presses the material plate against the lower mold insert, and the upper mold insert drives the material plate to move toward the first through hole.
[0007] Preferably, the lower mold assembly further includes a lower base plate for mounting the lower mold insert, the lower base plate having two mounting holes; the lower mold base has a positioning protrusion on each side of the first through hole, and the lower base plate is fitted onto the positioning protrusion through the mounting holes to be positioned and constrained on the lower mold base.
[0008] Preferably, the lower base plate has a second through hole that communicates with the first through hole, and the diameter of the second through hole is less than or equal to the cross-sectional diameter of the first through hole.
[0009] Preferably, the lower mold base also forms a base for supporting the lower bottom plate, and the first through hole is located at the middle end of the base.
[0010] Preferably, the cross-sectional area of the base is greater than or equal to the cross-sectional area of the lower base plate.
[0011] Preferably, the upper mold assembly further includes an upper base plate for mounting the upper mold insert and the small presser; the small mold assembly further includes a guide hole on the lower base plate and a guide post on the upper base plate, wherein when the upper mold assembly is displaced relative to the lower mold assembly, the guide post is inserted into the guide hole.
[0012] Preferably, the lower mold base is connected to the lower mold assembly by bolts, and the upper mold base is connected to the upper mold assembly by bolts.
[0013] Preferably, the punching mechanism includes a blanking hole on the material support platform and a punch on the upper die base that can be guided through the large press.
[0014] Preferably, the lower mold base is also fixedly installed with an unloading guide rail, which is located inside the discharge cavity to connect the discharge cavity with the outside.
[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:
[0016] (1) This utility model provides a combined blanking die, which mainly solves the problems of insufficient flexibility, high change costs, and high maintenance costs of traditional dies when facing changes in parts and products, which use the structure of replacing inserts. The technical solution of this utility model adopts a structure of multiple dies combined and installed, that is, the original large die assembly is used as the base, and small dies are used to replace the inserts. The inserts can be detached and quickly installed in the clearance space at both ends of the material support table and the large pressing device. In this way, the entire set of dies does not need to be replaced. Only the small die assembly needs to be replaced, which saves a lot of production costs. In actual installation, the small die assembly only needs to be simply positioned and installed. It can be quickly and flexibly fine-tuned through the upper die insert and the lower die insert. This can save the debugging time between inserts, and the processing accuracy requirements of the lower die base are lower, the production efficiency is higher, and it can quickly adapt to changes in market demand.
[0017] (2) In this technical solution, the bottom plate is fitted onto the positioning protrusion through the mounting hole, so that the lower mold component of the small mold can be quickly disassembled and installed without much precise positioning, and the installation efficiency is higher.
[0018] (3) In this technical solution, the guide hole on the lower base plate and the guide post on the upper base plate in the small mold assembly are inserted into each other, that is, the positioning and guiding are achieved by the small mold itself to prevent the upper mold insert and the lower mold insert of the small mold from having a misalignment difference during processing, thus ensuring the product processing accuracy. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0021] Figure 2 This is a schematic diagram of the upper mold base in an embodiment of the present invention;
[0022] Figure 3 for Figure 2 An explosion diagram;
[0023] Figure 4 This is a schematic diagram of the structure of the lower mold base in an embodiment of this utility model;
[0024] Figure 5 for Figure 4 An explosion diagram;
[0025] Figure 6 This is a schematic cross-sectional view of an embodiment of the present utility model.
[0026] The annotations in the attached figures are explained as follows:
[0027] 1. Large mold assembly; 11. Upper mold base; 111. Large pressing device; 11A / 12A. Clearance space; 12. Lower mold base; 121. Material support platform; 122. Discharge cavity; 123. First through hole; 124. Positioning protrusion; 125. Base; 126. Unloading guide rail; 131. Drop hole; 132. Punch;
[0028] 21. Upper mold assembly; 211. Upper mold insert; 212. Small pressure piece; 213. Upper base plate; 22. Lower mold assembly; 221. Lower mold insert; 222. Lower base plate; 223. Mounting hole; 224. Second through hole; 23. Guide hole; 24. Guide post. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0030] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.
[0031] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.
[0032] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.
[0033] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".
[0034] Please see Figures 1 to 6 .
[0035] This embodiment provides a combined blanking die, mainly addressing the problems of insufficient flexibility, high change costs, and high maintenance costs associated with traditional dies that rely on replacing inserts to address changes in part quality. This utility model mainly includes a large die assembly 1 and a small die assembly detachably assembled onto the large die assembly.
[0036] The large mold assembly 1 includes an upper mold base 11, a lower mold base 12, and a punching mechanism; the lower mold base 12 is formed with a material support platform 121, and a discharge cavity 122 communicating with the outside is formed at the bottom of the material support platform 121; the upper mold base 11 is elastically connected to a large pressing device 111 corresponding to the material support platform 121; the material support platform 121 and the large pressing device 111 are respectively provided with clearance spaces 11A / 12A for installing the small mold assembly at their left and right ends; the lower mold base 12 is formed with a first through hole 123 for guiding the discharge cavity 122 in the clearance space 12A;
[0037] The small mold assembly has at least two (the number may be increased depending on product requirements) and is located in the clearance spaces 11A / 12A at the left and right ends of the material support platform 121 and the large pressing device 111, respectively. The small mold assembly includes a lower mold assembly 22 detachably disposed on the lower mold base 12 and an upper mold assembly 21 detachably disposed on the upper mold base 11. The upper mold assembly 21 includes an upper mold insert 211 and a small pressing device 212, and the lower mold assembly 22 includes a lower mold insert 221 located next to the first through hole 123.
[0038] When the upper mold base 11 moves downward relative to the lower mold base 12, the small pressing device 212 presses the material plate against the lower mold insert 221, and the upper mold insert 211 drives the material plate to move toward the first through hole 123.
[0039] In this embodiment, since the material plate is pressed by the small presser 212 and the lower die insert 221, the upper die insert 211 continues to move downward. The upper end face of the upper die insert 211 and the lower die insert 221 will form a misaligned shear difference. As the material plate is moved toward the first through hole 123, the edge of the material plate will be sheared. In this way, the waste material formed by the material plate will enter the first through hole 123 and be discharged into the discharge cavity 122.
[0040] In this embodiment, the lower mold base 12 and the lower mold assembly 22 are detachably connected by bolts, and the upper mold base 11 and the upper mold assembly 21 are detachably connected by bolts. In other embodiments, a snap-fit connection can also be used for installation.
[0041] In this embodiment, the lower mold assembly 22 further includes a lower base plate 222 for mounting the lower mold insert 221. The lower base plate 222 has two mounting holes 223. The lower mold base 12 has a positioning protrusion 124 on each side of the first through hole 123. The lower base plate 222 is fitted onto the positioning protrusion 124 through the mounting holes 223 to be positioned and constrained on the lower mold base 12. In this way, the lower mold assembly 22 can be quickly and detachably positioned and installed on the lower mold base 12 without requiring excessive precision positioning. In this embodiment, the lower base plate 222 is in direct contact with the lower mold base 12, and the lower mold insert 221 is located on the upper end of the lower base plate 222. Thus, the lower base plate 222 is fixedly connected, while the lower mold insert 221 can be finely adjusted on the lower base plate 222.
[0042] In this embodiment, the lower base plate 222 is formed with a second through hole 224 that communicates with the first through hole 123. The diameter of the second through hole 224 is less than or equal to the diameter of the first through hole 123. In this way, when the waste material of the material plate enters the first through hole 123, it can be smoothly discharged to the discharge cavity 122 through the second through hole 224 without jamming. Conversely, if the diameter of the second through hole 224 is too large, the waste material may get stuck on the lower mold base 12 and cannot be discharged, causing blockage.
[0043] In this embodiment, in order to realize the unloading process, a discharge cavity 122 is formed at the bottom of the lower mold base 12. This can easily lead to insufficient overall pressure bearing capacity of the lower mold base 12. Therefore, a base 125 for supporting the lower base plate 222 is formed in the lower mold base 12 (there are two bases 125, which are located at the left and right ends of the material support platform 121 respectively). The two first through holes 123 are located at the middle ends of the two bases 125 respectively. The cross-sectional area of the base 125 is greater than or equal to the cross-sectional area of the lower base plate 222. In this way, the contact area between the entire lower mold assembly 22 and the base 125 is larger, which can diffuse the force received to a certain extent, reduce the pressure, and prevent the lower mold base 12 from bearing too much pressure.
[0044] In this embodiment, the upper mold assembly 21 further includes an upper base plate 213 for mounting the upper mold insert 211 and the small pressure piece 212. This makes it easier to adjust the upper mold insert 211 and the small pressure piece 212 on the upper base plate 213 to correspond to the lower mold insert 221 on the lower base plate 222. The small pressure piece 212 is elastically mounted on the upper base plate 213.
[0045] In this embodiment, the lower mold insert 221 is on the lower base plate 222, and the upper mold insert 211 and the small pressure piece 212 are on the upper base plate 213. When fine-tuning, the overall mold is relatively small, making it easier, faster, and more efficient to adjust.
[0046] In this embodiment, the small mold assembly also includes a guide hole 23 on the lower base plate 222 and a guide post 24 on the upper base plate 213. When the upper mold assembly 21 moves relative to the lower mold assembly 22, the guide post 24 is inserted into the guide hole 23. In this embodiment, the upper mold base 11 and the lower mold base 12 of the large mold assembly 1 also have one or more guide mechanisms. However, in this embodiment, in order to prevent displacement deviation when the upper mold assembly 21 in the small mold assembly moves relative to the lower mold assembly 22, and in order to improve machining accuracy, a set of guide mechanisms is also designed in the small mold assembly.
[0047] In this embodiment, the punching mechanism includes a material drop hole 131 on the material support table 121 and a punch 132 on the upper die base 11 that can guide through the large pressing device 111. During the actual processing, the upper die base 11 moves downward relative to the lower die base 12, and the punch 132 is inserted into the material drop hole 131 to discharge the waste material on the material plate to the discharge cavity 122.
[0048] In this embodiment, the lower mold base 12 is also fixedly installed with a discharge guide rail 126, which is located in the discharge cavity 122 to connect the discharge cavity 122 with the outside.
[0049] Working principle and usage process of this utility model:
[0050] Before machining the part plate, firstly, select two corresponding small mold assemblies based on the structure of both ends of the part; then, assemble and install the two small mold assemblies onto the large mold assembly 1 respectively. When installing the small mold assemblies: see... Figures 2 to 6First, bolts are used to fasten the lower mold insert 221 and the lower base plate 222. Then, the two mounting holes 223 of the lower base plate 222 are aligned with the positioning protrusions 124 on both sides of the first through hole 123 on the lower mold base 12, so that the lower base plate 222 is positioned and constrained on the clearance space 12A at both ends of the material support platform 121. Second, similarly, bolts are used to fasten the upper mold insert 211, the small pressure piece 212 and the upper base plate 213. Then, the upper base plate 213 is also installed on the upper mold base 11, so that the upper base plate 213 is positioned and constrained on the clearance space 11A at both ends of the large pressure piece 111. Third, the upper mold insert 211 or the lower mold insert 221 and the small pressure piece 212 can be fine-tuned or directly disassembled and replaced according to the installation situation.
[0051] When processing the part plate, the upper mold base 11 of the large mold assembly 1 moves downward relative to the lower mold base 12. The large pressing device 111 presses the middle part of the part plate onto the material support table 121. Then, the upper mold base 11 continues to move downward, and the large pressing device 111 elastically contracts to continue pressing. The small pressing device 212 presses the two sides of the part plate tightly against the lower mold insert 221. Finally, as the lower mold base 12 continues to move downward, the discharge hole 131 cooperates with the punch 132 to discharge the material, so that the waste material is discharged from the unloading guide rail 126. At the same time, the upper end face of the upper mold insert 211 and the lower mold insert 221 will form a misaligned shear difference, which will drive the part plate to move towards the first through hole 123 to shear the sides of the part plate. The waste material formed by the part plate will enter the first through hole 123 and fall onto the unloading guide rail 126 in the discharge cavity 122 and be discharged to the outside. After processing a material plate part, the upper mold base 11 moves upward relative to the lower mold base 12, the large pressing device 111 and the small pressing device 212 reset, and the material plate part can be removed. Therefore, this utility model adopts a structure in which multiple molds are combined and installed. That is, the original large mold assembly 1 is used as the base, and the small molds are used to replace the inserts. The inserts are detachable and quick-installed in the clearance space 11A / 12A at both ends of the material support table 121 and the large pressing device 111. In this way, the entire set of molds does not need to be replaced. Only the small mold assembly needs to be replaced, which saves a lot of production costs. In actual installation, the small mold assembly only needs to be simply positioned and installed. It can be quickly and flexibly fine-tuned through the upper mold insert 211 and the lower mold insert 221. This can save the debugging time between inserts, and the processing accuracy requirements of the lower mold base 12 are lower. The production efficiency is also higher, and it can quickly adapt to changes in market demand.
[0052] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.
Claims
1. A combined blanking die, characterized in that: It includes a large mold assembly and a small mold assembly that can be detachably assembled onto the large mold assembly; wherein, A large mold assembly includes an upper mold base, a lower mold base, and a punching mechanism; the lower mold base is formed with a material support platform, and a discharge cavity communicating with the outside is formed at the bottom of the material support platform; the upper mold base is elastically connected to a large pressing device corresponding to the material support platform; the material support platform and the large pressing device are respectively provided with clearance spaces for installing small mold assemblies at their left and right ends, and the lower mold base is formed with a first through hole for guiding the discharge cavity in the clearance space; The small mold assembly has at least two parts, each located in the clearance space at the left and right ends of the material support platform and the large pressing device, respectively; the small mold assembly includes a lower mold assembly detachably disposed on the lower mold base and an upper mold assembly detachably disposed on the upper mold base; the upper mold assembly includes an upper mold insert and a small pressing device, and the lower mold assembly includes a lower mold insert located next to the first through hole; When the upper mold base moves downward relative to the lower mold base, the small pressing device presses the material plate against the lower mold insert, and the upper mold insert drives the material plate to move toward the first through hole.
2. The combined blanking die as described in claim 1, characterized in that: The lower mold assembly further includes a lower base plate for mounting the lower mold insert, the lower base plate having two mounting holes; the lower mold base has a positioning protrusion on each side of the first through hole, and the lower base plate is fitted onto the positioning protrusion through the mounting holes to be positioned and constrained on the lower mold base.
3. A combined blanking die as described in claim 2, characterized in that: The bottom plate has a second through hole that communicates with the first through hole, and the diameter of the second through hole is less than or equal to the cross-sectional diameter of the first through hole.
4. A combined blanking die as described in claim 3, characterized in that: The lower mold base also forms a base for supporting the lower bottom plate, and the first through hole is located at the middle end of the base.
5. A combined blanking die as described in claim 4, characterized in that: The cross-sectional area of the base is greater than or equal to the cross-sectional area of the lower base plate.
6. A combined blanking die as described in claim 4, characterized in that: The upper mold assembly also includes an upper base plate for mounting the upper mold insert and the small presser; the small mold assembly also includes a guide hole on the lower base plate and a guide post on the upper base plate. When the upper mold assembly is displaced relative to the lower mold assembly, the guide post is inserted into the guide hole.
7. A combined blanking die as described in claim 1, characterized in that: The lower mold base is connected to the lower mold assembly by bolts, and the upper mold base is connected to the upper mold assembly by bolts.
8. A combined blanking die as described in any one of claims 1 to 7, characterized in that: The punching mechanism includes a blanking hole on the material support platform and a punch on the upper die base that can be guided through the large pressing device.
9. A combined blanking die as described in any one of claims 1 to 7, characterized in that: The lower mold base is also fixedly installed with a discharge guide rail, which is located inside the discharge cavity to connect the discharge cavity with the outside.