Blanking die capable of reducing internal stress of material
By combining the blanking die head and the electric heating plate, the internal stress of the material is eliminated, the stress concentration problem of the blanking die during processing is solved, the flatness and mechanical properties of the material are improved, and the scrap rate is reduced.
Patent Information
- Application Number
- CN202520075265.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-14
AI Technical Summary
During the processing of existing blanking dies, significant stress is generated inside the material, leading to decreased dimensional accuracy, deformation, and reduced mechanical properties, which affects product quality and increases scrap rate.
The material is punched at the punching hole using a punching die head, and the combination of support plate and electric heating plate eliminates material stress through heat transfer. Combined with the action of hydraulic push rod and spring, the material is kept flat and clamped at high temperature.
It effectively reduces internal stress in materials, improves material flatness, enhances dimensional accuracy and mechanical properties, reduces deformation and scrap rate, and extends mold life.
Smart Images
Figure CN223847884U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a punching die technical field especially relates to a kind of punching die that can reduce material internal stress. BACKGROUND
[0002] In the existing punching process, when punching die carries out punching processing to material, it often makes that material inside generates greater stress. This is because that the conventional punching process instantaneous force is big and concentrated, material is not balanced under stress, leads to internal lattice distortion etc., and then generates stress concentration phenomenon. These residual stresses not only reduce the dimensional accuracy of material, make that punched part is susceptible to deformation in subsequent use or processing process, affect product quality, but also can reduce the mechanical properties of material, such as fatigue strength, shorten product service life, increase scrap rate, improve production cost. Therefore, present and provide a kind of punching die that can reduce material internal stress. SUMMARY
[0003] In view of the deficiencies of the prior art, the utility model provides a kind of punching die that can reduce material internal stress, by utilizing punching membrane head at punching hole to material punching, the material cut off enters into the inside of punching hole and contacts with support backing plate, under the continued pushing action of two first hydraulic push rods, make support backing plate move down, and make spring be completely compressed, utilize electric heating plate to heat support backing plate for a period of time, make heat transfer to material, high temperature helps to eliminate the stress of material punching, and material becomes more level under the clamping of punching membrane head and support backing plate, overcome the deficiencies of prior art.
[0004] In order to achieve the above object, the utility model adopts the following technical scheme:
[0005] A kind of punching die that can reduce material internal stress, including support table, the lower end of the support table is connected with U type support board, the upper end of the support table is fixed with support, the middle part of the support table is provided with punching hole, the support is installed with punching mechanism, the lower end surface of the support table is installed with support backing plate by elastic connecting piece, the lower end surface middle part of the support backing plate is installed with electric heating plate, the horizontal section upper end of the U type support board is fixed with material ejecting assembly, the middle part of the support backing plate is provided with through-hole.
[0006] As a further scheme of the utility model: the support includes fixed column being fixed on the both sides of the upper end surface of support table symmetrically, the upper end of two fixed columns is connected with top rod.
[0007] As a further scheme of the utility model: the punching mechanism includes two first hydraulic push rods being fixed on the lower end surface of top rod both sides, the lower end of first hydraulic push rod is connected with lifting plate, the lower end surface of lifting plate is fixed with punching membrane head.
[0008] As a further scheme of the utility model: the elastic connecting piece includes four fixed pins fixed at the lower end surface of the support table, the lower end of the four fixed pins is connected with a stop block, the four corners of the support backing plate are respectively slidably sleeved on the four fixed pins, and springs are sleeved on the four fixed pins below the support backing plate.
[0009] As a further scheme of the utility model: the material ejecting assembly includes a second hydraulic push rod fixed at the upper end surface of the horizontal section of the U-shaped support plate, and the upper end of the second hydraulic push rod is connected with a material ejecting rod.
[0010] As a further scheme of the utility model: the size of the material ejecting rod is smaller than the size of the through hole.
[0011] As a further scheme of the utility model: the upper end surface of the support table is fixed with a limiting plate on each side, limiting openings are formed in the two limiting plates, and the two ends of the lifting plate are slidably connected with the two limiting openings.
[0012] As a further scheme of the utility model: the bottom end of the two limiting openings is fixed with a limiting pin, and the two ends of the lifting plate are slidably sleeved on the two limiting pins.
[0013] The utility model has the advantages of:
[0014] By using the blanking film head to blank the material at the blanking hole, the cut material enters the blanking hole and contacts the support backing plate, under the continuous pushing action of the two first hydraulic push rods, the support backing plate moves downward, and the spring is completely compressed, the support backing plate is heated by the electric heating plate for a period of time, so that heat is transferred to the material, high temperature helps to eliminate the stress of the material blanking part, and the material becomes more flat under the clamping of the blanking film head and the support backing plate. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 The utility model provides a first perspective three-dimensional structure schematic diagram of a blanking die capable of reducing internal stress of material.
[0016] Figure 2 The utility model provides a second perspective three-dimensional structure schematic diagram of a blanking die capable of reducing internal stress of material.
[0017] Figure 3 The utility model provides a third perspective three-dimensional structure schematic diagram of a blanking die capable of reducing internal stress of material.
[0018] Figure 4 The utility model provides a blanking die capable of reducing internal stress of material. Figure 2 The utility model provides a first perspective three-dimensional structure schematic diagram of a blanking die capable of reducing internal stress of material.
[0019] In the figure: 1, support table; 2, limit pin; 3, limit plate; 4, ejector rod; 5, lifting plate; 6, punching film head; 7, spring; 8, U-shaped support plate; 9, limit port; 10, first hydraulic push rod; 11, support plate; 12, through hole; 13, electric heating plate; 14, fixed column; 15, second hydraulic push rod; 16, material ejecting rod; 17, fixed pin; 18, stop block; 19, punching hole. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.
[0021] Embodiment 1, refer to Figures 1-4 A punching die capable of reducing internal stress of materials, comprising a support table 1, the lower end of the support table 1 is connected with a U-shaped support plate 8, the upper end of the support table 1 is fixed with a support, the middle part of the support table 1 is provided with a punching hole 19, a punching mechanism is installed on the support, the lower end surface of the support table 1 is installed with a support plate 11 through elastic connecting pieces, the lower end surface of the middle part of the support plate 11 is installed with an electric heating plate 13, the horizontal section of the upper end of the U-shaped support plate 8 is fixed with a material ejecting assembly, and the middle part of the support plate 11 is provided with a through hole 12.
[0022] The support comprises fixed columns 14 which are symmetrically fixed on the upper end surface of the support table 1, and the upper ends of the two fixed columns 14 are connected with an ejector rod 4.
[0023] The punching mechanism comprises two first hydraulic push rods 10 which are fixed on the lower end surface of the ejector rod 4, the lower end of the first hydraulic push rod 10 is connected with a lifting plate 5, and the lower end surface of the lifting plate 5 is fixed with a punching film head 6.
[0024] The elastic connecting pieces comprise four fixed pins 17 which are fixed on the lower end surface of the support table 1, the lower end of the four fixed pins 17 is connected with a stop block 18, the four corners of the support plate 11 are respectively slidably sleeved on the four fixed pins 17, and the four fixed pins 17 are all sleeved with springs 7 below the support plate 11.
[0025] The material ejecting assembly comprises a second hydraulic push rod 15 which is fixed on the upper end surface of the horizontal section of the U-shaped support plate 8, the upper end of the second hydraulic push rod 15 is connected with a material ejecting rod 16, and the size of the material ejecting rod 16 is smaller than the size of the through hole 12.
[0026] The punching material is placed above the punching hole 19, the lifting plate 5 and the punching film head 6 are pushed downward by the two first hydraulic push rods 10, the punching film head 6 is used to punch the material at the punching hole 19, the cut material enters the inside of the punching hole 19 and contacts the supporting plate 11, under the continuous pushing action of the two first hydraulic push rods 10, the supporting plate 11 is pushed downward, and the spring 7 is completely compressed, the supporting plate 11 is heated by the electric heating plate 13 for a period of time, so that heat is transferred to the material, high temperature helps to eliminate the stress of the material punching, and the material becomes more flat under the clamping of the punching film head 6 and the supporting plate 11, after the stress is eliminated, the punching film head 6 is pushed upward, and the second hydraulic push rod 15 is used to push the material ejecting rod 16 upward, the material ejecting rod 16 passes through the through hole 12 to eject the material, so as to realize the unloading.
[0027] Embodiment 2, this embodiment is optimized on the basis of embodiment 1, specifically:
[0028] The upper end face of the supporting table 1 is fixed with a limiting plate 3 on both sides, a limiting hole 9 is formed in each of the two limiting plates 3, and the two ends of the lifting plate 5 are respectively slidably connected with the two limiting holes 9, and the bottom ends of the two limiting holes 9 are fixed with limiting pins 2, and the two ends of the lifting plate 5 are respectively slidably sleeved on the two limiting pins 2.
[0029] The limiting hole 9 limits the lifting plate 5, and the lifting plate 5 is slidably sleeved on the limiting pin 2, so that the lifting plate 5 is stably supported, and the lifting plate 5 and the punching film head 6 are prevented from being damaged during the punching process, and the service life of the punching film head 6 is guaranteed.
[0030] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A blanking die capable of reducing internal stress of a material, comprising a support table (1), characterized in that, The lower end of the support table (1) is connected with a U-shaped support plate (8), the upper end of the support table (1) is fixed with a support, the middle part of the support table (1) is provided with a punching hole (19), the support is provided with a punching mechanism, the lower end surface of the support table (1) is provided with a support backing plate (11) through an elastic connecting piece, the lower end surface of the support backing plate (11) is provided with an electric heating plate (13), the horizontal section of the U-shaped support plate (8) is fixed with a material pushing assembly at the upper end, and the middle part of the support backing plate (11) is provided with a through hole (12).
2. The blanking die capable of reducing internal stress of a material according to claim 1, characterized in that, The support comprises two fixed columns (14) which are symmetrically fixed on the upper end surfaces of the support table (1) on both sides, and the upper ends of the two fixed columns (14) are connected with a top rod (4).
3. The blanking die capable of reducing internal stress of a material according to claim 2, characterized in that, The punching mechanism comprises two first hydraulic push rods (10) which are fixed on the lower end surfaces of the top rod (4), the lower ends of the two first hydraulic push rods (10) are connected with a lifting plate (5), and the lower end surface of the lifting plate (5) is fixed with a punching film head (6).
4. The blanking die capable of reducing internal stress of a material according to claim 1, wherein The elastic connecting piece comprises four fixed pins (17) which are fixed on the lower end surface of the support table (1), the lower ends of the four fixed pins (17) are connected with a stop block (18), the four corners of the support backing plate (11) are respectively slidably sleeved on the four fixed pins (17), and springs (7) are sleeved on the four fixed pins (17) below the support backing plate (11).
5. The blanking die capable of reducing internal stress of a material according to claim 1, wherein The material pushing assembly comprises a second hydraulic push rod (15) which is fixed on the upper end surface of the horizontal section of the U-shaped support plate (8), and the upper end of the second hydraulic push rod (15) is connected with a material pushing rod (16).
6. The blanking die capable of reducing internal stress of a material according to claim 5, wherein The size of the material pushing rod (16) is smaller than the size of the through hole (12).
7. The blanking die capable of reducing internal stress of a material according to claim 3, characterized by, The upper end surfaces of the support table (1) are both fixed with limit plates (3), limit openings (9) are formed in the two limit plates (3), and the two ends of the lifting plate (5) are respectively slidably connected with the two limit openings (9).
8. The blanking die capable of reducing internal stress of a material according to claim 7, characterized by, The bottoms of the two limit openings (9) are both fixed with limit pins (2), and the two ends of the lifting plate (5) are respectively slidably sleeved on the two limit pins (2).