Stamping die accurate in positioning
By introducing lifting components and limiting ejector pin structures into the stamping die, the problem of displacement of sheet materials during the stamping process is solved, achieving precise positioning and efficient production, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-07
AI Technical Summary
The stamping dies on the market lack a precise positioning structure for sheet materials, which makes the sheet materials easy to shift during stamping, resulting in a high product defect rate. Existing manual or mechanical alignment methods are inefficient, inaccurate, and costly.
Design a stamping die including an upper die and a lower die, using a lifting component and a limiting ejector pin structure. The limiting ejector pins are matched with the holes in the sheet material to achieve precise positioning, and the stamping is performed by the cooperation of the lifting component and the core cavity.
It enables precise positioning of sheet materials, reduces alignment time, improves stamping accuracy and production efficiency, ensures product quality, and reduces production costs.
Smart Images
Figure CN224087760U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold design, and in particular to a stamping mold with accurate positioning. Background Technology
[0002] Stamping dies are special process equipment used in cold stamping to process materials (metal or non-metal) into parts (or semi-finished products). They are called cold stamping dies (commonly known as cold stamping dies). Stamping is a pressure processing method that uses dies mounted on a press to apply pressure to materials at room temperature, causing them to separate or undergo plastic deformation, thereby obtaining the desired parts.
[0003] Most stamping dies on the market do not have a structure to position sheet materials. During stamping, sheet materials are prone to displacement, resulting in a relatively high defect rate. The current solution is to use manual or mechanical alignment before stamping to ensure that the sheet material is fully aligned with the upper and lower dies of the mold. However, manual alignment has drawbacks such as low efficiency, poor accuracy, and poor safety. Mechanical alignment requires a specific alignment mechanism, which increases production costs.
[0004] Therefore, it is necessary to design a stamping die that can provide precise positioning for sheet material during mold closing, in order to reduce the time required for alignment. Utility Model Content
[0005] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.
[0006] A precise positioning stamping die includes an upper die and a lower die. A core is fixedly installed on the bottom side of the upper die, and a cavity is fixedly installed on the upper side of the lower die. The core is pressed into the cavity with a clearance fit.
[0007] The bottom side of the cavity is formed with a first through groove, and a lifting assembly is installed in the first through groove in a sliding fit. The upper side of the lifting assembly forms the bottom surface of the cavity.
[0008] The lower mold has a second through groove formed in the middle. The second through groove is located on the bottom side of the first through groove, and the lifting assembly slides up and down within the first and second through grooves.
[0009] The lifting assembly has at least two first ejector pin holes formed therein. A limiting ejector pin and a first elastic element are installed in the first ejector pin holes with a clearance fit. The upper end of the limiting ejector pin extends out of the first ejector pin hole, and the first elastic element is installed abutting against the bottom end of the first ejector pin hole and the limiting ejector pin.
[0010] Furthermore: a positioning template is fixedly installed on the bottom side of the lower mold, a number of lifting frames are fixedly installed on the bottom side of the positioning template, and a base plate is fixedly installed on the bottom side of the number of lifting frames.
[0011] Furthermore, a lift is fixedly installed in the middle of the bottom side of the positioning template, and the lift drives the lifting assembly to move up and down.
[0012] Furthermore: a shielding cover is fixedly installed on the outside of the elevator, and the shielding cover is fitted between the two middle lifting frames with a gap fit.
[0013] Furthermore, the lifting platform adopts any one of the following: pneumatic cylinder, hydraulic cylinder, or electric push rod.
[0014] Furthermore, the upper end of the limiting ejector pin is formed with a correction cone.
[0015] Furthermore: the upper side of the lower mold is formed with a recessed groove, and the cavity is embedded in the recessed groove, with the upper surface of the cavity and the upper surface of the lower mold being flush with each other.
[0016] Furthermore: the upper side of the lifting assembly is formed with a plurality of second ejector pin holes, and a demolding ejector pin and a second elastic element are installed in the second ejector pin holes with clearance fit. The upper end of the demolding ejector pin extends out of the second ejector pin hole, and the second elastic element is abutted and installed at the bottom end of the second ejector pin hole and the demolding ejector pin.
[0017] Furthermore, the height of the ejector pin is lower than the height of the limiting ejector pin.
[0018] Furthermore, both the first and second elastic elements are springs.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] 1. First, process a sheet material with at least two holes. Before stamping, manually place the sheet material on the lifting assembly. At this time, the limit pins can be installed in the holes of the sheet material one by one to achieve precise positioning. During the mold closing and stamping process, the sheet material will not shift, ensuring stamping accuracy and thus ensuring the production quality of the product.
[0021] 2. When the mold is closed, the upper mold descends, allowing the core to contact the lifting assembly first, and then continues to press down into the cavity. At the same time as the mold closes and presses down, the lifting assembly also moves down synchronously, thereby stably clamping the middle of the sheet material for stamping. When the edge of the sheet material contacts the cavity, it can stamp and form the structure of the cavity. At the same time, through the cooperation of the core and the cavity, the sheet material is shaped and stamped to achieve the purpose of mass production.
[0022] 3. When placing sheet material on the lifting assembly, the limiting pin can be automatically aligned with the hole on the sheet material by adjusting the cone, thereby achieving precise and rapid installation and alignment of the sheet material on the lifting assembly and accelerating production efficiency.
[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0024] 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.
[0025] Figure 1 This is a schematic diagram of the structure of this utility model when the mold is closed;
[0026] Figure 2 This is a schematic diagram of the structure of this utility model during mold opening;
[0027] Figure 3 This is an exploded structural diagram of the present invention;
[0028] Figure 4 yes Figure 3 A structural diagram from another perspective;
[0029] Figure 5 yes Figure 3 Another structural diagram from a different perspective;
[0030] Figure 6 This is a schematic diagram of the installation structure of the limiting ejector pin and the demolding ejector pin on the lifting assembly.
[0031] The figure shows: 1. Upper mold; 2. Lower mold; 3. Core; 4. Cavity; 5. First through slot; 6. Lifting assembly; 7. Second through slot; 8. First ejector pin hole; 9. Limiting ejector pin; 10. First elastic element; 11. Positioning template; 12. Lifting frame; 13. Base plate; 14. Lifting mechanism; 15. Shielding cover; 16. Correcting cone; 17. Recessed groove; 18. Second ejector pin hole; 19. Demolding ejector pin; 20. Second elastic element. Detailed Implementation
[0032] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0033] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0034] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do 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 a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0037] like Figure 1-6 As shown, this utility model discloses a stamping die with accurate positioning, comprising an upper die 1 and a lower die 2. A core 3 is fixedly installed on the bottom side of the upper die 1, and a cavity 4 is fixedly installed on the upper side of the lower die 2. The core 3 is pressed into the cavity 4 with a clearance fit. A first through groove 5 is formed on the bottom side of the cavity 4. A lifting assembly 6 is installed in the first through groove 5 with a lifting and sliding fit. The upper side of the lifting assembly 6 forms the bottom surface of the cavity 4. A second through groove 7 is formed in the middle of the lower die 2. The second through groove 7 is located on the bottom side of the first through groove 5, and the lifting assembly 6 slides and moves up and down within the first through groove 5 and the second through groove 7. At least two first ejector pin holes 8 are formed on the lifting assembly 6. A limiting ejector pin 9 and a first elastic element 10 are installed in the first ejector pin hole 8 with a clearance fit. The upper end of the limiting ejector pin 9 extends out of the first ejector pin hole 8, and the first elastic element 10 abuts against the first ejector pin hole 8 and the bottom end of the limiting ejector pin 9.
[0038] The principle is as follows: First, a sheet material with at least two holes is processed. Before stamping, the sheet material is manually placed on the lifting assembly 6. At this time, the limiting ejector pins 9 can be installed in the holes of the sheet material one by one to achieve the effect of precise positioning. When the mold is closed, the upper mold 1 descends, allowing the core 3 to contact the lifting assembly 6 first, and then continue to press down into the cavity 4. At the same time as the mold is closed and pressed down, the lifting assembly 6 will also move down synchronously, thereby stably clamping the middle of the sheet material for stamping. When the edge of the sheet material contacts the cavity 4, it can stamp the structure of the cavity 4. At the same time, through the cooperation of the core 3 and the cavity 4, the sheet material is shaped and stamped to achieve the purpose of mass production, effectively reducing the alignment time of the sheet material placed in the mold.
[0039] Furthermore: a positioning template 11 is fixedly installed on the bottom side of the lower mold 2, and several lifting frames 12 are fixedly installed on the bottom side of the positioning template 11, and a base plate 13 is fixedly installed on the bottom side of the several lifting frames 12; a lifting mechanism 14 is fixedly installed in the middle of the bottom side of the positioning template 11, and the lifting mechanism 14 drives the lifting assembly 6 to move up and down; a shielding cover 15 is fixedly installed on the outside of the lifting mechanism 14, and the shielding cover 15 is fitted between the two lifting frames 12 in the middle with a clearance fit; this can ensure the stable up and down movement of the lifting assembly 6, thereby ensuring the precise stamping of the sheet material.
[0040] Furthermore, the lifting platform 14 adopts any one of the following: pneumatic cylinder, hydraulic cylinder, and electric push rod.
[0041] Furthermore, the upper end of the limiting pin 9 is formed with a correction cone 16; when the sheet material is placed on the lifting assembly 6, the limiting pin 9 can be automatically aligned with the hole on the sheet material by the correction cone 16, thereby realizing the precise and rapid installation and alignment of the sheet material on the lifting assembly 6, and speeding up production efficiency.
[0042] Furthermore, the upper side of the lower mold 2 is formed with a recessed groove 17, and the cavity 4 is embedded in the recessed groove 17. The upper surface of the cavity 4 and the upper surface of the lower mold 2 are flush with each other. This can effectively save the space occupied by the mold, while increasing the stability of the mold and improving its service life.
[0043] Furthermore, the upper side of the lifting assembly 6 is formed with several second ejector pin holes 18. A demolding ejector pin 19 and a second elastic element 20 are installed in the second ejector pin holes 18 with clearance fit. The upper end of the demolding ejector pin 19 extends out of the second ejector pin hole 18, and the second elastic element 20 is installed abutting against the bottom end of the second ejector pin hole 18 and the demolding ejector pin 19. After stamping is completed, the second elastic element 20 will drive the demolding ejector pin 19 to perform elastic reset, thereby ejecting the product out of the cavity 4. At the same time, the lifting assembly 6 can also lift and lower the product to eject it out of the cavity 4, thus facilitating the demolding action of the product in the cavity 4.
[0044] Furthermore, the height of the ejector pin 19 is lower than the height of the limiting ejector pin 9, which enables precise positioning of sheet materials.
[0045] Furthermore, both the first elastic element 10 and the second elastic element 20 are springs.
[0046] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.
Claims
1. A precisely positioned stamping die, comprising an upper die and a lower die, wherein a core is fixedly mounted on the bottom side of the upper die, and a cavity is fixedly mounted on the upper side of the lower die, the core being press-fitted into the cavity with a clearance fit; characterized in that: The bottom side of the cavity is formed with a first through groove, and a lifting assembly is installed in the first through groove in a sliding fit. The upper side of the lifting assembly forms the bottom surface of the cavity. The lower mold has a second through groove formed in the middle. The second through groove is located on the bottom side of the first through groove, and the lifting assembly slides up and down within the first and second through grooves. The lifting assembly has at least two first ejector pin holes. A limiting ejector pin and a first elastic element are installed in the first ejector pin holes with a clearance fit. The upper end of the limiting ejector pin extends out of the first ejector pin hole. The first elastic element is installed abutting against the bottom end of the first ejector pin hole and the limiting ejector pin. A correction cone is formed at the upper end of the limiting ejector pin.
2. The accurately positioned stamping die according to claim 1, characterized in that: A positioning template is fixedly installed on the bottom side of the lower mold, and several lifting frames are fixedly installed on the bottom side of the positioning template. A base plate is fixedly installed on the bottom side of the several lifting frames.
3. The accurately positioned stamping die according to claim 2, characterized in that: A lift is fixedly installed in the middle of the bottom side of the positioning template, and the lift drives the lifting components to move up and down.
4. The accurately positioned stamping die according to claim 3, characterized in that: A shielding cover is fixedly installed on the outside of the elevator, and the shielding cover is installed between the two middle lifting frames with a gap fit.
5. A precisely positioned stamping die according to any one of claims 3 or 4, characterized in that: The elevator uses any one of the following: pneumatic cylinder, hydraulic cylinder, or electric push rod.
6. A stamping die with accurate positioning according to claim 1, characterized in that: The upper side of the lower mold is formed with a recessed groove, and the cavity is embedded in the recessed groove. The upper surface of the cavity and the upper surface of the lower mold are flush with each other.
7. A stamping die with accurate positioning according to claim 1, characterized in that: The upper side of the lifting assembly is formed with a plurality of second ejector pin holes. A demolding ejector pin and a second elastic element are installed in the second ejector pin holes with clearance fit. The upper end of the demolding ejector pin extends out of the second ejector pin hole, and the second elastic element is abutted and installed at the bottom end of the second ejector pin hole and the demolding ejector pin.
8. A stamping die with accurate positioning according to claim 7, characterized in that: The height of the ejector pin is lower than the height of the limiting ejector pin.
9. A precisely positioned stamping die according to any one of claims 7 or 8, characterized in that: Both the first elastic element and the second elastic element are springs.