Stretching stamping die and stamping system

Abstract

The utility model discloses a stretching stamping die and stamping system, wherein the stretching stamping die comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die base, a pressing block, a clamping plate and a punch, the punch is assembled on the clamping plate, the clamping plate is installed on the upper die base, and the pressing block is installed on the upper die base. The pressing block is pressed on the clamping plate and detachably connected with the upper die base, a protruding block is arranged on the side face of the punch in a protruding mode, the side surface of the protruding block is an arc-shaped face, the protruding block is used for punching the side edge of a product in the stretching process to form a flanged hole, and the flanged hole is used for positioning in the edge cutting procedure. Products can be accurately positioned in the subsequent trimming and stamping process, the positioning accuracy of the trimming process is improved, the debugging stability is guaranteed, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cold stamping process especially relates to a stretch stamping die and stamping system. BACKGROUND

[0002] Stamping die, it is a kind of special process equipment in cold stamping processing, and it is processed into part (or semi-finished product) by material (metal or non-metal), called cold stamping die (commonly known as cold stamping die). Cold stamping process generally includes stretching, trimming, flanging, punching and other processes. Stretching process is a kind of cold stamping process that makes flat plate blank or shallow cup-shaped blank into open hollow part through die, which mainly uses male die to pull blank material into female die cavity, and material produces plastic deformation under the action of male die and female die, so that the shape of material changes. After stretching process, the edge of the part usually has excess material or uneven condition. Trimming process mainly uses the blade of the die to cut the edge of the stretched part, so that the edge of the part meets the design requirements of shape and size. The principle of trimming process is to make the male die and female die of trimming die interact by applying pressure by punch, so that the excess material is cut off.

[0003] However, in the existing process steps, when the part is transferred from the stretching process to the trimming process, the workpiece is positioned by using the profiling positioning mode. However, in stamping processing, due to the unevenness of the material or the error of the previous processing process, the shape and size of the workpiece are deviated, and when the profiling positioning is adopted, these deviations will affect the positioning accuracy, and then affect the positioning accuracy of the trimming process, resulting in deviation of the trimming shape, and then affecting the product quality. UTILITY MODEL CONTENT

[0004] The utility model aims at at least one of the problems in the related art to some extent. Therefore, one of the purposes of the utility model is to provide a stretch stamping die, which can accurately position the product in the subsequent trimming stamping process, improve the positioning accuracy of the trimming process, ensure the stability of debugging and improve the product quality.

[0005] A stretch stamping die, the stretch stamping die includes upper die assembly and lower die assembly, the upper die assembly includes upper die seat, press block, clamping plate and punch, the punch is assembled to the clamping plate, the clamping plate is installed to the upper die seat, the press block is pressed to the clamping plate and is detachably connected with the upper die seat, the side surface of the punch is provided with lug, the side surface of the lug is arc surface, the lug is used to form the flange hole to the side edge stamping of product in the stretching process, and the flange hole is used for the positioning of trimming process.

[0006] Further, the number of the pressing block, the clamping plate and the punch is multiple, one pressing block, one clamping plate and one punch correspondingly connect to form a set of hole flanging assembly, and multiple hole flanging assemblies are arranged at intervals.

[0007] Further, the number of the hole flanging assembly is four, four hole flanging assemblies are arranged in a matrix four-corner mode, and two of the four hole flanging assemblies are symmetrically arranged.

[0008] Further, the side surface of the protruding block is a circular arc surface.

[0009] Further, the lower die assembly has a shape matched with the punch.

[0010] Further, the pressing block and the upper die seat are screw-connected.

[0011] The utility model also proposes a stamping system, including the drawing stamping die and the trimming stamping die as the above, the trimming stamping die includes trimming upper die seat and trimming punch, the side of trimming punch protrudes and is provided with positioning block, the side surface of positioning block is arc surface, and positioning block is used to resist the side hole flanging of product in trimming process to position the product.

[0012] Further, the number of the trimming punch is multiple, and multiple trimming punches are arranged at intervals.

[0013] Further, the number of the trimming punch is four, four trimming punches are arranged in a matrix four-corner mode, and two of the four trimming punches are symmetrically arranged.

[0014] Further, the side surface of the positioning block is a circular arc surface.

[0015] The above technical scheme provided by the embodiment of the application has the following advantages compared with the prior art:

[0016] The drawing stamping die is composed of an upper die assembly and a lower die assembly, wherein the upper die assembly is mainly composed of an upper die seat, a pressing block, a clamping plate and a punch. In this structure, the punch is precisely assembled on the clamping plate, and the clamping plate is fixedly installed on the upper die seat. In addition, the pressing block is pressed on the clamping plate, and the upper die seat and the pressing block are designed in a detachable connection mode. In particular, the side of the punch is designed with protruding protruding blocks, and the side surface of the protruding blocks is arc-shaped. These protruding blocks play a key role in the drawing stamping process, and they can punch the side of the product to form a hole flanging. When the product is subjected to a trimming process, the hole flanging can be used as a positioning point, which is used as a resisting positioning by the trimming stamping die to ensure that the trimming die can accurately position the product. In this way, accurate positioning of the product can be achieved, thereby improving production efficiency and product quality. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0018] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] In the attached image:

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the stretching and stamping die of this application;

[0021] Figure 2 for Figure 1 A schematic diagram of the stretch stamping die from another perspective;

[0022] Figure 3 This is a schematic diagram of the structure of an embodiment of the stamping system of this application;

[0023] Figure 4 for Figure 3 A schematic diagram of the stamping system from another perspective;

[0024] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0025] Figure label:

[0026] 1. Stretching and stamping die; 10. Upper die assembly; 11. Upper die base; 13. Pressure block; 15. Clamping plate; 17. Punch; 171. Protrusion; 100. Stamping system; 2. Trimming stamping die; 21. Trimming upper die base; 23. Trimming punch; 231. Positioning block. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0029] As shown in Figure 1 , Figure 2 , the present application provides a stretch drawing die 1, which comprises an upper die assembly 10 and a lower die assembly. The upper die assembly 10 comprises an upper die seat 11, a pressing block 13, a clamping plate 15 and a punch 17. The punch 17 is assembled on the clamping plate 15, the clamping plate 15 is installed on the upper die seat 11, and the pressing block 13 is pressed on the clamping plate 15 and detachably connected with the upper die seat 11. The side surface of the punch 17 is provided with a protrusion 171, and the side surface of the protrusion 171 is arc-shaped. The protrusion 171 is used to punch a side edge of a product during the stretching process to form a flange hole, which is used for positioning in the trimming process.

[0030] The stretch drawing die 1 is composed of an upper die assembly 10 and a lower die assembly, wherein the upper die assembly 10 is mainly composed of an upper die seat 11, a pressing block 13, a clamping plate 15 and a punch 17. In this structure, the punch 17 is precisely assembled on the clamping plate 15, and the clamping plate 15 is fixedly installed on the upper die seat 11. In addition, the pressing block 13 is pressed on the clamping plate 15, and is designed to be detachably connected with the upper die seat 11. In particular, the side surface of the punch 17 is designed with protruding protrusions 171, and the side surface of the protrusions 171 is arc-shaped. These protrusions 171 play a key role in the stretching process, and they can punch the side edge of the product to form a flange hole. When the product is subjected to the trimming process, the flange hole can be used as a positioning point, which is used as a resisting positioning by the trimming die 2 to ensure that the trimming die can accurately position the product. In this way, accurate positioning of the product can be achieved, thereby improving production efficiency and product quality.

[0031] In the stretch drawing die 1 of the present application, in addition to the above-mentioned structural features, a cooling system is specially designed to ensure that the temperature of the die remains within a reasonable range during continuous operation, avoiding changes in material properties or damage to the die due to excessive temperature. The cooling system is provided with cooling channels in the upper die seat 11 and the lower die seat, and the circulation of cooling liquid is used to carry away excess heat. In addition, in order to further improve the service life and punching efficiency of the die, the contact surfaces of the punch 17 and the clamping plate 15 are treated with wear-resistant materials, which can withstand long-term friction without being easily worn.

[0032] Further, the number of the pressing blocks 13, the clamping plates 15, and the punches 17 is multiple, and one pressing block 13, one clamping plate 15, and one punch 17 correspondingly connect to form a set of hole-flanging assemblies, and multiple hole-flanging assemblies are arranged at intervals.

[0033] In this embodiment, the number of the pressing blocks 13, the clamping plates 15, and the punches 17 is multiple, and one pressing block 13, one clamping plate 15, and one punch 17 correspondingly connect to form a set of hole-flanging assemblies, and multiple hole-flanging assemblies are arranged at intervals. The arrangement of multiple flanges can realize the flanging of different positions on the edge of the product, so as to realize the synchronous clamping and positioning of multiple flanges in the subsequent edge cutting process, and improve the positioning effect of the mold on the product in the edge cutting process.

[0034] Further, the number of the hole-flanging assemblies is four, and the four hole-flanging assemblies are arranged in a matrix four-corner arrangement and are symmetrically arranged in groups of two.

[0035] In this embodiment, the interval arrangement, the specific matrix four-corner arrangement, and the central symmetric arrangement of the multiple edge cutting punches 23 further optimize the clamping effect in the edge cutting process and improve the positioning effect of the mold on the product in the edge cutting process.

[0036] Further, the side surface of the protrusion 171 is a circular arc surface.

[0037] In this embodiment, due to the circular arc surface design of the protrusion 171, the damage to the material can be effectively reduced, the surface quality of the product can be improved, and the positioning effect of the mold on the product in the edge cutting process can be maintained.

[0038] Further, the lower die assembly has a shape matched with the punch 17.

[0039] In this embodiment, the lower die assembly has a shape matched with the punch 17, which ensures the close fit of the punch 17 and the lower die assembly during stamping, thereby improving the precision and efficiency of stamping. This design not only reduces material waste but also improves the overall quality of the product.

[0040] Further, the pressing block 13 and the upper die seat 11 are threadedly connected.

[0041] In this embodiment, the threaded connection of the pressing block 13 and the upper die seat 11 makes the disassembly and replacement of the mold assembly more convenient, which is beneficial to improve the production efficiency and reduce the maintenance cost.

[0042] As Figures 3-5As shown, the utility model also proposes a kind of stamping system 100, the stamping system 100 includes stretch stamping die 1 and trimming stamping die 2, the trimming stamping die 2 includes trimming upper die seat 21 and trimming punch 23, the side of trimming punch 23 is provided with positioning block 231, the side surface of positioning block 231 is arc surface, and the positioning block 231 is used to resist the side edge hole flanging of product during trimming process to position product.The specific structure of the stretch stamping die 1 is referred to the above embodiment, since the stamping system 100 adopts all the technical solutions of the above all embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0043] Further, the number of the trimming punch 23 is multiple, and the multiple trimming punches 23 are arranged at intervals.

[0044] In the embodiment, the number of the trimming punch 23 is multiple, and one trimming punch 23 corresponds to one hole flanging arrangement, and the multiple trimming punches 23 are arranged at intervals. The arrangement of the multiple trimming punches 23 can realize synchronous resistance of hole flanging at different positions of the product edge, so as to realize synchronous clamping and positioning of multiple hole flangings in the trimming process, and improve the positioning effect of the mold on the product in the trimming process.

[0045] Further, the number of the trimming punch 23 is four, the four trimming punches 23 are arranged in a matrix four-corner manner, and the four trimming punches 23 are arranged in a center-symmetrical manner in groups of two.

[0046] In the embodiment, the multiple trimming punches 23 are arranged at intervals, and arranged in a specific matrix four-corner manner and a center-symmetrical manner, which further optimizes the clamping effect in the trimming process and improves the positioning effect of the mold on the product in the trimming process.

[0047] Further, the side surface of the positioning block 231 is a circular arc surface.

[0048] In the embodiment, in the stamping system 100, the positioning block 231 of the trimming stamping die 2 also adopts an arc surface design, which ensures accurate resistance of the side edge hole flanging of the product in the trimming process, thereby ensuring the positioning accuracy of the product.

[0049] It can be understood that the above embodiment only expresses the preferred embodiment of the utility model, the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled person in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a number of deformations and improvements can be made, which belong to the protection scope of the utility model; therefore, any equivalent transformation and modification within the scope of the utility model patent claim should belong to the scope of the utility model patent claim.

Claims

1. A stretch draw die characterized by, The upper die assembly comprises an upper die seat, a pressing block, a clamping plate and a punch, the punch is assembled to the clamping plate, the clamping plate is installed to the upper die seat, the pressing block is pressed to the clamping plate and is detachably connected with the upper die seat, the side surface of the punch is provided with a protrusion, the side surface of the protrusion is an arc surface, and the protrusion is used for stamping a side edge of a product to form a flange in a stretching process, and the flange is used for positioning in a trimming process.

2. A stretch draw die according to claim 1 wherein, The number of the pressing block, the clamping plate and the punch is multiple, one pressing block, one clamping plate and one punch are correspondingly connected to form an opening flange assembly, and multiple opening flange assemblies are arranged at intervals.

3. A stretch draw die according to claim 2 wherein, The number of the opening flange assembly is four, four opening flange assemblies are arranged in a matrix four-corner mode, and two of the four opening flange assemblies are symmetrically arranged.

4. A stretch draw die according to claim 3 wherein, The side surface of the protrusion is a circular arc surface.

5. A stretch draw die according to claim 4 wherein, The lower die assembly has a shape matched with the punch.

6. A stretch draw die according to any one of claims 1 to 5, wherein, The pressing block and the upper die seat are screw-connected.

7. A stamping system characterized by, The stretching and stamping die and the trimming stamping die are arranged in the stretching and stamping die, the trimming stamping die comprises a trimming upper die seat and a trimming punch, the side surface of the trimming punch is provided with a positioning block, the side surface of the positioning block is an arc surface, and the positioning block is used for abutting against a flange of a product in a trimming process to position the product.

8. A punch system according to claim 7, characterized in that The number of the trimming punch is multiple, and multiple trimming punches are arranged at intervals.

9. A punch system according to claim 8, wherein The number of the trimming punch is four, four trimming punches are arranged in a matrix four-corner mode, and two of the four trimming punches are symmetrically arranged.

10. A punch system according to claim 9, wherein The side surface of the positioning block is a circular arc surface.

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