Stamping die convenient to demould

Abstract

The utility model discloses a stamping die convenient to demould, which relates to the field of die design and comprises a lower die, and a cavity is fixedly mounted on the top side of the lower die. The mold cavity comprises a cavity body, a bottom plate and a jacking mechanism, the cavity body is fixedly installed on the lower mold, a lifting open groove is formed in the bottom side in the cavity body, the bottom plate is installed in the lifting open groove in a clearance fit mode, and the jacking mechanism is fixedly installed in the lower mold and drives the bottom plate to do lifting movement in the lifting open groove; the jacking mechanism comprises a jacking air cylinder and a jacking rod, the jacking air cylinder drives the jacking rod to ascend and descend, a semicircular cutting groove is formed in the upper end of the jacking rod, a semicircular jacking hole is formed in the bottom plate, the upper end of the jacking rod is inserted into the semicircular jacking hole in a clearance fit mode through the semicircular cutting groove, and the height of the semicircular cutting groove is larger than the thickness of the bottom plate; compared with the prior art, the demoulding device is beneficial to demoulding of a product with a deep groove structure, the production efficiency is greatly improved, and meanwhile, the condition that the product and the mould are damaged due to prying of the product can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of mold design, and in particular to a stamping mold that is easy to demold. 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] After stamping, the stamping dies on the market require manual prying to demold and unload the product, which is very inconvenient. Moreover, prying the product can easily damage both the product and the die, leading to a reduction in the die's lifespan. In addition, especially for large stamped products, the time required to pry the product is high, which seriously affects the production efficiency of the die. Existing technology includes a solution of setting ejector pins in the lower die, but for products with deep groove structures, the ejection height is limited when using ejector pins alone. If the ejector pins are lengthened, they will become unstable. Once the ejector pins bend, the die cannot be used normally, which seriously affects its lifespan.

[0004] Therefore, it is necessary to design a stamping die that facilitates demolding to solve this technical problem. 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 stamping die that facilitates demolding 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 top side of the lower die. When the die is closed, the core is pressed into the cavity with a clearance fit.

[0007] The cavity includes a cavity body, a base plate, and a lifting mechanism. The cavity body is fixedly installed on the lower mold. A lifting slot is formed on the bottom side of the cavity body. The base plate is fitted into the lifting slot with a clearance fit. The upper surface of the base plate and the inner wall of the cavity body form the inner cavity of the cavity. The lifting mechanism is fixedly installed in the lower mold. The lifting mechanism drives the base plate to move up and down within the lifting slot.

[0008] The lifting mechanism includes a lifting cylinder and a lifting rod. The lifting cylinder drives the lifting rod to move up and down. The upper end of the lifting rod is formed with a semi-circular groove, and the base plate is formed with a semi-circular lifting hole. The upper end of the lifting rod is inserted into the semi-circular lifting hole through the gap fit of the semi-circular groove. The height of the semi-circular groove is greater than the thickness of the base plate.

[0009] Furthermore: the core has several through holes formed inside, the through holes are arranged vertically, the upper end of the through holes is formed with internal threads, an external thread nut is installed in the internal threads in a spiral fit, an upper ejector pin and a spring are installed in the through holes in a clearance fit, and the spring is installed between the upper ejector pin and the external thread nut.

[0010] Furthermore: an anti-slip cap is formed on the outer side of the top of the upper ejector pin, the inner diameter of the upper end of the through hole is larger than the inner diameter of the lower end of the through hole, the spring and the anti-slip cap are both fitted with clearance fit in the upper end of the through hole, and the upper ejector pin is fitted with clearance fit in the lower end of the through hole.

[0011] Furthermore: the core has at least two positioning holes formed in the middle, the positioning holes are vertically arranged, and a positioning shaft is installed in the positioning hole with clearance fit. The bottom end of the positioning shaft extends out of the positioning hole and is formed with a cone. At least two clearance holes are formed on the base plate, and the cone at the bottom end of the positioning shaft is inserted into the clearance hole with clearance fit.

[0012] Furthermore: the upper end of the positioning shaft rests against the bottom side of the upper mold.

[0013] Furthermore, there are four lifting mechanisms, and the four lifting mechanisms are respectively set at the four ends of the bottom plate.

[0014] Furthermore: a positioning frame is fixedly installed on the lower mold, and the cavity of the mold cavity is fixedly installed in the positioning frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: During stamping mold opening, the lifting cylinder of the lifting mechanism drives the lifting rod to rise. The upper end of the lifting rod is inserted into the semi-circular lifting hole through the semi-circular groove and used as an ejector pin, thereby separating the bottom side of the product from the base plate. At this time, the lifting cylinder continues to drive the lifting rod to rise. The semi-circular groove of the lifting rod will press against the bottom side of the base plate and drive the entire base plate to rise, thereby ejecting the entire base plate. This is beneficial for demolding products with deep groove structures, greatly improving production efficiency, and avoiding damage to the product and mold caused by prying the product.

[0016] 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

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model when the mold is closed;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model during mold opening;

[0020] Figure 3 This is an exploded structural diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the core and cavity structure;

[0022] Figure 5 yes Figure 4 A structural diagram from another perspective;

[0023] Figure 6 This is a schematic diagram of the core structure;

[0024] Figure 7 yes Figure 6 A structural diagram from another perspective.

[0025] The diagram shows: 1. Upper mold; 2. Lower mold; 3. Core; 4. Cavity; 41. Cavity body; 42. Base plate; 43. Lifting mechanism; 431. Lifting cylinder; 432. Lifting rod; 5. Lifting slot; 6. Semi-circular cut; 7. Semi-circular lifting hole; 8. Through hole; 9. Internal thread; 10. External thread nut; 11. Upper ejector pin; 12. Spring; 13. Anti-detachment cap; 14. Positioning hole; 15. Positioning shaft; 16. Cone; 17. Clearance hole; 18. Positioning frame. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] like Figure 1-7 As shown, the present invention provides a stamping die that is easy to demold, including 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 top side of the lower die 2. When the die is closed, the core 3 is pressed into the cavity 4 with a clearance fit.

[0032] The cavity 4 includes a cavity 41, a base plate 42, and a lifting mechanism 43. The cavity 41 is fixedly installed on the lower mold 2. A lifting slot 5 is formed on the bottom side of the cavity 41. The base plate 42 is fitted into the lifting slot 5 with a clearance fit. The upper surface of the base plate 42 and the inner wall of the cavity 41 form the inner cavity of the cavity 4. The lifting mechanism 43 is fixedly installed in the lower mold 2. The lifting mechanism 43 drives the base plate 42 to move up and down within the lifting slot 5.

[0033] The lifting mechanism 43 includes a lifting cylinder 431 and a lifting rod 432. The lifting cylinder 431 drives the lifting rod 432 to move up and down. The upper end of the lifting rod 432 is formed with a semi-circular groove 6, and the bottom plate 42 is formed with a semi-circular lifting hole 7. The upper end of the lifting rod 432 is inserted into the semi-circular lifting hole 7 through the semi-circular groove 6 with a clearance fit. The height of the semi-circular groove 6 is greater than the thickness of the bottom plate 42.

[0034] The principle is as follows: When the stamping mold is opened, the lifting cylinder 431 of the lifting mechanism 43 drives the lifting rod 432 to rise. The upper end of the lifting rod 432 will be inserted into the semi-circular lifting hole 7 through the semi-circular groove 6 and used as an ejector pin, thereby separating the bottom side of the product from the base plate 42. At this time, the lifting cylinder 431 continues to drive the lifting rod 432 to rise. The semi-circular groove 6 of the lifting rod 432 will press against the bottom side of the base plate 42 and drive the entire base plate 42 to rise, thereby ejecting the entire base plate 42. This is beneficial for the demolding of products with deep groove structures, greatly improving production efficiency, and avoiding damage to the product and mold caused by prying the product.

[0035] Furthermore: the core 3 has several through holes 8 formed inside, the through holes 8 are arranged vertically, the upper end of the through hole 8 is formed with an internal thread 9, an external thread nut 10 is installed in the internal thread 9 in a spiral fit, and an upper ejector pin 11 and a spring 12 are installed in the through hole 8 with a clearance fit. The spring 12 is installed between the upper ejector pin 11 and the external thread nut 10. When the mold is closed, the upper ejector pin 11 will be pressed into the through hole 8 by the spring 12. When the mold is opened, the spring 12 will drive the upper ejector pin 11 to reset, so that the product stays on the core 3 of the upper mold 1, which facilitates demolding and avoids damage to the product.

[0036] Furthermore: an anti-detachment cap 13 is formed on the outer side of the top of the upper ejector pin 11, the inner diameter of the upper end of the through hole 8 is larger than the inner diameter of the lower end of the through hole 8, the spring 12 and the anti-detachment cap 13 are both fitted with clearance fit in the upper end of the through hole 8, and the upper ejector pin 11 is fitted with clearance fit in the lower end of the through hole 8; this can prevent the upper ejector pin 11 from falling off and has higher stability.

[0037] Furthermore, the core 3 has at least two positioning holes 14 formed in the middle, the positioning holes 14 are vertically arranged, and a positioning shaft 15 is installed in the positioning hole 14 with clearance fit. The bottom end of the positioning shaft 15 extends out of the positioning hole 14 and is formed with a cone 16 at the bottom end. At least two clearance holes 17 are formed on the base plate 42, and the cone 16 at the bottom end of the positioning shaft 15 is inserted into the clearance hole 17 with clearance fit. This can realize the stamping positioning of the plate material before stamping, avoid the phenomenon of displacement during stamping, ensure stamping accuracy, and reduce the generation of defective products.

[0038] Furthermore, the upper end of the positioning shaft 15 rests against the bottom side of the upper mold 1, which ensures the stable installation of the positioning shaft 15.

[0039] Furthermore, four lifting mechanisms 43 are provided, and the four lifting mechanisms 43 are arranged one-to-one at the four ends of the lower side of the base plate 42; this ensures that the product is stably ejected from the base plate 42, and at the same time ensures that the lifting mechanism 43 can stably eject the base plate 42, thereby facilitating the demolding action.

[0040] Furthermore, a positioning frame 18 is fixedly installed on the lower die 2, and the cavity 41 of the cavity 4 is fixedly installed in the positioning frame 18; this makes the installation and positioning of the cavity 4 more accurate and improves the stamping accuracy.

[0041] 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 stamping die for easy demolding, comprising an upper die and a lower die, wherein a core is fixedly installed on the bottom side of the upper die and a cavity is fixedly installed on the top side of the lower die, wherein the core is pressed into the cavity with a clearance fit when the die is closed; Its features are: The cavity includes a cavity body, a base plate, and a lifting mechanism. The cavity body is fixedly installed on the lower mold. A lifting slot is formed on the bottom side of the cavity body. The base plate is fitted into the lifting slot with a clearance fit. The upper surface of the base plate and the inner wall of the cavity body form the inner cavity of the cavity. The lifting mechanism is fixedly installed in the lower mold. The lifting mechanism drives the base plate to move up and down within the lifting slot. The lifting mechanism includes a lifting cylinder and a lifting rod. The lifting cylinder drives the lifting rod to move up and down. The upper end of the lifting rod is formed with a semi-circular groove, and the base plate is formed with a semi-circular lifting hole. The upper end of the lifting rod is inserted into the semi-circular lifting hole through the gap fit of the semi-circular groove. The height of the semi-circular groove is greater than the thickness of the base plate.

2. The stamping die for easy demolding according to claim 1, characterized in that: The core has several through holes formed inside, which are vertically arranged. The upper end of the through hole is formed with an internal thread, and an external thread nut is installed in the internal thread in a spiral fit. An upper ejector pin and a spring are installed in the through hole with a clearance fit, and the spring is installed between the upper ejector pin and the external thread nut.

3. A stamping die for easy demolding according to claim 2, characterized in that: An anti-slip cap is formed on the outer side of the top of the upper ejector pin. The inner diameter of the upper end of the through hole is larger than the inner diameter of the lower end of the through hole. The spring and the anti-slip cap are both installed in the upper end of the through hole with clearance fit. The upper ejector pin is installed in the lower end of the through hole with clearance fit.

4. A stamping die for easy demolding according to claim 1, characterized in that: The core has at least two positioning holes formed in the middle. The positioning holes are vertically arranged. A positioning shaft is installed in the positioning hole with clearance fit. The bottom end of the positioning shaft extends out of the positioning hole and is formed with a cone. At least two clearance holes are formed on the base plate. The cone at the bottom end of the positioning shaft is inserted into the clearance hole with clearance fit.

5. A stamping die for easy demolding according to claim 4, characterized in that: The upper end of the positioning shaft rests against the bottom side of the upper mold.

6. A stamping die for easy demolding according to claim 1, characterized in that: There are four lifting mechanisms, and the four lifting mechanisms are respectively set at the four ends of the bottom plate.

7. A stamping die for easy demolding according to claim 1, characterized in that: A positioning frame is fixedly installed on the lower mold, and the cavity is fixedly installed in the positioning frame.

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