Stamping die suitable for multi-process combination
By designing a stamping die suitable for merging multiple processes and utilizing nitrogen spring assemblies and upper and lower die assembly structures, parts can be formed first and then trimmed and punched. This solves the problem of conventional molds requiring multiple sets of molds and multiple processes, thereby improving production efficiency and reducing costs.
Patent Information
- Application Number
- CN202422025997.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-08-20
AI Technical Summary
Conventional stamping dies can only perform one process at a time, resulting in complex products requiring multiple sets of dies and multiple processes, which is time-consuming and labor-intensive, and makes it difficult to meet the needs of merging multiple processes.
A stamping die suitable for merging multiple processes was designed. The nitrogen spring assembly was used to provide the initial force, so that the parts were first formed and then trimmed and punched. Combined with the structural design of the upper and lower die assemblies, the merging of multiple processes was achieved.
The mold structure is simplified, the cost is reduced, the production efficiency is improved, the number of processes is reduced, and the quality of the part's surface and inner hole size is guaranteed.
Smart Images
Figure CN223382403U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of cold stamping processing, in particular to the technical field of multi-process processing, and specifically to a stamping die suitable for combining multiple processes. Background Art
[0002] A stamping die is a special process equipment used in cold stamping to process metal or non-metal materials into parts or semi-finished products. It is called a cold stamping die, commonly known as a cold stamping die.
[0003] Stamping is a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature, causing it to separate or plastically deform, thereby obtaining the desired parts.
[0004] Conventional stamping dies can only perform one stamping process at a time under the action of a press. However, some products to be processed have complex structures, many irregular bends, and require multiple processing techniques to form. As a result, multiple sets of dies need to be configured and multiple processes need to be carried out to complete the processing. The process is complicated and requires multiple positioning and calibration, which is time-consuming and labor-intensive. Summary of the Invention
[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a stamping die suitable for combining multiple processes to solve the difficulties of the prior art.
[0006] To achieve the above-mentioned and other related purposes, the present invention provides a stamping die suitable for combining multiple processes, comprising an upper die assembly and a lower die assembly disposed directly below the upper die assembly;
[0007] The upper die assembly provides a force to the inner stripping plate 5 through a nitrogen spring assembly, and a punching punch 5 and an upper die plate 12 connected to the upper clamping plate 10 are respectively provided on the inner and outer sides of the inner stripping plate 5;
[0008] The lower die assembly is provided with a lower die plate 22 corresponding to the inner stripping plate 5, a lower die insert 23 is provided in the lower die plate 22 corresponding to the punching punch 5, and a lower stripping plate 15 is sleeved on the outer side of the lower die plate 22;
[0009] The sheet is deformed and formed by the inner stripping plate 5 and the lower template 22;
[0010] The punching punch 5 and the lower die insert 23 are used to form the punching hole of the sheet;
[0011] The upper mold plate 12 and the lower mold plate 22 form the outer shape of the cutting edge of the blank.
[0012] According to a preferred embodiment, the nitrogen spring assembly is provided with a nitrogen spring 2, an upper ejector plate 3, an ejector rod 4 and an inner release plate 5 which are connected to each other in sequence along a direction close to the lower mold assembly.
[0013] According to the preferred embodiment, the outer dimensions of the upper top plate 3 are larger than those of the inner stripping plate 5 , and there are multiple nitrogen springs 2 and push rods 4 , which are evenly distributed on the corresponding upper top plate 3 and inner stripping plate 5 .
[0014] According to the preferred embodiment, the upper mold assembly is provided with an upper supporting plate 1, an upper pad 6, an upper mold base 7, an upper clamping plate 10 and an upper mold plate 12 in sequence along the direction close to the lower mold assembly;
[0015] The punching punch 11 is installed in the upper clamping plate 10, and the bottom is set through the inner stripping plate 5. An upper pad 8 is also installed on the side of the upper die base 5 close to the punching punch 11.
[0016] According to a preferred embodiment, an inner limiter 14 is further installed in the upper template 12 , and the bottom of the inner limiter 14 extends out of the bottom of the upper template 12 .
[0017] According to a preferred embodiment, when the upper mold assembly moves toward the lower mold assembly, the bottom of the inner limit 14 abuts against the lower supporting plate 15 and drives the lower supporting plate 15 to move downward.
[0018] According to the preferred embodiment, the lower die assembly is provided with a lower stripping plate 15, a lower clamping plate 20, a lower pad 24, a lower die base 25 and a lower pad 27 in sequence from top to bottom;
[0019] The lower stripping plate 15 is provided with an elastic positioning pin 17;
[0020] The lower stripping plate 15 is connected to the contour sleeve assembly 18 and the spring 19 at the bottom.
[0021] According to the preferred embodiment, the lower template 22 is coaxially arranged just below the inner stripping plate 5, and the bottom is mounted on the lower clamping plate 20;
[0022] The outer diameters of the lower template 22 and the inner stripping plate 5 are the same.
[0023] According to the preferred embodiment, an inner guide post 21 is further installed in the lower clamping plate 20. The inner guide post 21 is arranged upward and passes through the lower support plate 15, the upper template 12 and the upper clamping plate 10 in sequence.
[0024] A lower inner guide sleeve 16 and an upper inner guide sleeve 13 are also installed in the lower supporting plate 15 and the upper template 12 .
[0025] According to the preferred embodiment, an upper limit column 9 is installed at the bottom of the upper die base 7 , and a lower limit column 26 coaxially arranged with the upper limit column 9 is installed on the corresponding lower die base 25 .
[0026] Since the initial force of the nitrogen spring is relatively large, the utility model can form the parts first and then trim and punch them, which not only ensures the surface size of the parts but also ensures the outer shape and inner hole size of the parts. In addition, the mold structure is simple and reliable, which not only meets the quality requirements of the parts but also reduces the mold cost. At the same time, the combination of multiple processes reduces the number of parts working procedures, improves production efficiency and reduces labor costs.
[0027] The following will describe in more detail the best embodiments of the present invention in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 Shown is a schematic diagram of the structure of the utility model;
[0029] Figure 2 Shown is a top view of the present invention;
[0030] Description of labels
[0031] 1. Upper support plate; 2. Nitrogen spring; 3. Upper ejector plate; 4. Ejector rod; 5. Inner stripper plate; 6. Upper pad; 7. Upper die base; 8. Upper pad; 9. Upper limit post; 10. Upper clamping plate; 11. Punch punch; 12. Upper die plate; 13. Upper inner guide sleeve; 14. Inner limit; 15. Lower stripper plate; 16. Lower inner guide sleeve; 17. Elastic locating pin; 18. Equal height sleeve assembly; 19. Spring; 20. Lower clamping plate; 21. Inner guide post; 22. Lower die plate; 23. Lower die insert; 24. Lower pad; 25. Lower die base; 26. Lower limit post; 27. Lower pad. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0033] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.
[0034] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the specification and claims of the present utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprising" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0035] The utility model proposes a stamping die suitable for combining multiple processes, which is used in a cold stamping process. The utility model does not limit the type of product, but the structure of the stamping die suitable for combining multiple processes is particularly suitable for the requirement of first forming parts and then trimming and punching them.
[0036] In general, the stamping die for combining multiple processes proposed in the present invention mainly includes an upper die assembly and a lower die assembly arranged directly below the upper die assembly. Figure 1 , which shows the arrangement relationship between the upper mold assembly and the lower mold assembly.
[0037] In order to achieve the purpose of adapting to different processing and forming processes in the same mold, it is solved that for conventional stamping molds in the background technology, only one stamping process can be performed at a time under the action of the press, and some products to be processed have complex structures, many bends and irregularities, and need to be processed and formed by multiple processes, which leads to the need to configure multiple sets of molds and perform multiple processes to complete the processing, so that the process is complicated and requires multiple positioning and calibration, which is time-consuming and labor-intensive. For this reason, in the technical solution provided by this embodiment, since the initial force of the nitrogen spring is relatively large, the parts can be formed first and then trimmed and punched, which not only ensures the surface size of the parts but also ensures the outer shape and inner hole size of the parts. In addition, the mold structure is simple and reliable, which not only meets the quality requirements of the parts but also reduces the mold cost. At the same time, the combination of multiple processes reduces the number of processes of the parts, improves production efficiency and reduces labor costs.
[0038] like Figure 1As shown, the upper die assembly is provided with an upper supporting plate 1, an upper foot 6, an upper die base 7, an upper clamping plate 10 and an upper die plate 12 in sequence along the direction close to the lower die assembly; a punching punch 11 is installed in the upper clamping plate 10, and the bottom is provided through the inner stripping plate 5, and an upper pad 8 is also installed on the side of the upper die base 5 close to the punching punch 11;
[0039] In order to achieve the purpose of deforming and forming the sheet first by using the nitrogen spring 2, a nitrogen spring assembly is also installed under the upper support plate 1, which provides force to the inner stripping plate 5, and the punching punch 5 and the upper template 12 connected to the upper clamping plate 10 are respectively arranged on the inner and outer sides of the inner stripping plate 5.
[0040] On this basis, the nitrogen spring assembly is sequentially provided with a nitrogen spring 2, an upper top plate 3, a push rod 4 and an inner release plate 5 which are interconnected along the direction close to the lower mold assembly. At the same time, considering that the inner release plate 5 can stably deform the overall external structure of the part to ensure the balance of the force of the nitrogen spring 2, the external dimensions of the upper top plate 3 are larger than those of the inner release plate 5. There are multiple nitrogen springs 2 and push rods 4, and they are evenly distributed on the corresponding upper top plate 3 and inner release plate 5.
[0041] Next, when the nitrogen spring assembly completes the process of forming the part's external structure, the upper mold assembly continues to descend and mates with the structure in the lower mold assembly to complete other processes of the part. A lower template 22 is provided in the lower mold assembly corresponding to the inner stripping plate 5, and a lower mold insert 23 is provided in the lower template 22 corresponding to the punching punch 5. A lower stripping plate 15 is sleeved on the outer side of the lower template 22. The punching punch 5 and the lower mold insert 23 are used to punch the sheet, and the upper template 12 and the lower template 22 are used to form the external shape of the sheet.
[0042] The lower mold assembly is provided with a lower stripping plate 15, a lower clamping plate 20, a lower pad 24, a lower mold base 25 and a lower pad 27 from top to bottom; wherein the lower stripping plate 15 is installed with an elastic positioning pin 17 for placing the parts and determining the position at the same time; the lower stripping plate 15 is connected to the equal height sleeve assembly 18 and the spring 19, which can make the lower mold assembly always maintain stability during the downward movement under the force of the upper mold assembly, and can also facilitate the rapid removal of the parts after molding.
[0043] It should be specifically explained that in order to avoid deformation of the already formed parts during the process of trimming the outer shape of the sheet and punching the inner holes, thereby affecting the production quality, on the one hand, an inner limit 14 is also installed in the upper template 12, and the bottom of the inner limit 14 extends out of the bottom of the upper template 12. When the upper mold assembly moves toward the lower mold assembly, the bottom of the inner limit 14 is abutted against the lower support plate 15 and drives the lower support plate 15 to move downward, and the inner limit 14 is used to clamp the distance between the lower mold assemblies.
[0044] On the other hand, the outer diameters of the lower template 22 and the inner stripping plate 5 are limited to be the same, and the lower template 22 is coaxially arranged directly below the inner stripping plate 5, with the bottom installed on the lower clamping plate 20, so that the punching is limited to the space between the inner stripping plate 5 and the lower template 22, and the outer edge cutting of the sheet is limited to the space outside the inner stripping plate 5 and the lower template 22 to avoid interference.
[0045] As mentioned above, since the parts provided in this embodiment can complete both forming and trimming and punching, it is also configured with internal and external alignment structures. The internal comparison adopts an inner guide column 21, and the inner guide column 21 is installed in the lower clamping plate 20. The inner guide column 21 is set upward and passes through the lower support plate 15, the upper template 12 and the upper clamping plate 10 in sequence. A lower inner guide sleeve 16 and an upper inner guide sleeve 13 are also installed in the lower support plate 15 and the upper template 12 to avoid damage to the mold due to long-term movement; the external alignment structure is completed by an upper limit column 9 installed at the bottom of the upper mold base 7, and a lower limit column 26 coaxially arranged with the upper limit column 9 is installed on the lower mold base 25.
[0046] In use, the following process steps are included:
[0047] S1: During punching, the power device drives the punch slide to lift the upper die as a whole, separating the upper die assembly from the lower die assembly;
[0048] S2: At this time, the sheet is placed on the lower stripping plate 15 of the lower mold and the sheet is positioned using the elastic positioning pins 17;
[0049] S3: The upper die assembly moves vertically downward under the action of the power device and the punch slide, and the inner guide pin 21 enters the inner guide sleeve 13 to complete the guidance of the die;
[0050] S4: The upper mold assembly continues to move downward as a whole, and the inner release plate 5 contacts the upper surface of the blank. The force of the nitrogen spring 2 is transmitted to the inner release plate 5 through the upper ejector plate 3 and the ejector rod 4. The inner release plate 5 applies pressure to the blank, and the blank is deformed to complete the molding process. After that, the inner release plate 5 stops moving downward.
[0051] S5: The upper die assembly continues to move downward, and the inner limit 14 drives the lower stripper 15, the inner guide sleeve 16, the height-conforming sleeve assembly 18 and the spring 19 to move downward. Then, the sheet is trimmed under the joint action of the lower die plate 22 and the upper die plate 12. At the same time, the sheet is punched inside under the joint action of the punching punch 11 and the lower die insert 23.
[0052] S6: Finally, the upper side of the inner stripping plate 5 and the lower side of the upper splint 10 are in contact and locked; the lower side of the upper limit post 9 and the upper side of the lower limit post 26 are in contact and locked. At this time, the sheet forming, trimming and punching are completed;
[0053] S7: After the stamping is completed, the upper mold moves upward under the action of the power device to separate the upper mold assembly from the lower mold assembly. At the same time, the inner stripping plate 5 ejects the part under the action of the force transmitted by the nitrogen spring 2 through the upper ejector plate 3 and the ejector rod 4. Then, the lower stripping plate 15 ejects the waste wrapped in the lower template 22 upward under the force of the spring 19; the part is taken out and the waste is removed. At this time, all components of the upper and lower molds of the mold are restored to their initial positions, and the next stamping process can be carried out.
[0054] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.
Claims
1. A stamping die suitable for merging multiple processes, characterized in that: It includes an upper mold assembly and a lower mold assembly arranged directly below the upper mold assembly; The upper die assembly provides an acting force to the inner stripping plate (5) through a nitrogen spring assembly, and a punching punch (5) and an upper die plate (12) connected to the upper clamping plate (10) are respectively provided on the inner side and the outer side of the inner stripping plate (5); A lower mold plate (22) is provided in the lower mold assembly corresponding to the inner stripping plate (5), a lower mold insert (23) is provided in the lower mold plate (22) corresponding to the punching punch (5), and a lower stripping plate (15) is sleeved on the outer side of the lower mold plate (22); The sheet is deformed and formed by the inner stripping plate (5) and the lower template (22); Punching the sheet is performed by a punching punch (5) and a lower die insert (23); The outer shape of the sheet is cut by the upper template (12) and the lower template (22).
2. The stamping die suitable for combining multiple processes according to claim 1, characterized in that: The nitrogen spring assembly is provided with a nitrogen spring (2), an upper top plate (3), a push rod (4) and an inner stripping plate (5) which are connected to each other in sequence along a direction close to the lower die assembly.
3. The stamping die suitable for combining multiple processes according to claim 2, characterized in that: The upper die assembly is provided with an upper supporting plate (1), an upper pad (6), an upper die base (7), an upper clamping plate (10) and an upper die plate (12) in sequence along a direction close to the lower die assembly; The punching punch (11) is installed in the upper clamping plate (10), and the bottom is arranged through the inner stripping plate (5). An upper pad (8) is also installed on the side of the upper die base (5) close to the punching punch (11).
4. The stamping die suitable for combining multiple processes according to claim 3, characterized in that: An inner limiter (14) is also installed in the upper template (12), and the bottom of the inner limiter (14) extends out of the bottom of the upper template (12).
5. The stamping die suitable for combining multiple processes according to claim 4, characterized in that: The lower die assembly is provided with a lower stripping plate (15), a lower clamping plate (20), a lower pad (24), a lower die base (25) and a lower pad foot (27) in sequence from top to bottom; An elastic positioning pin (17) is installed on the lower stripping plate (15); The lower stripping plate (15) is connected to a contour sleeve assembly (18) and a spring (19) at the bottom.
6. The stamping die suitable for combining multiple processes according to claim 5, characterized in that: The lower template (22) is coaxially arranged just below the inner stripping plate (5), and the bottom is mounted on the lower clamping plate (20); The outer diameters of the lower template (22) and the inner stripping plate (5) are the same.
7. The stamping die suitable for combining multiple processes according to claim 6, characterized in that: An inner guide post (21) is also installed in the lower clamping plate (20), and the inner guide post (21) is arranged upward and passes through the lower supporting plate (15), the upper template (12) and the upper clamping plate (10) in sequence; A lower inner guide sleeve (16) and an upper inner guide sleeve (13) are also installed in the lower supporting plate (15) and the upper template (12).