A double punch press die

Abstract

This utility model discloses a double-bladed stamping die in the field of stamping die technology, comprising: an upper die assembly and a lower die assembly arranged vertically. Both the lower part of the upper die assembly and the upper part of the lower die assembly are detachably equipped with cutting strips. Two cutting strips are designated as an upper cutter and a lower cutter, each with a left-right extending blade. The upper and lower cutters are positioned front-to-back in the vertical direction, with their blades aligned vertically. In this double-bladed stamping die, the upper and lower cutters interlock, shearing and punching the material between the upper and lower die assemblies using their blades. This double-bladed shearing and punching method reduces the punching force requirement, prevents excessive blade wear, and improves the cross-sectional quality of the sheared material. Both the upper and lower cutters are detachable, allowing for timely removal and replacement after blade damage, facilitating maintenance and reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a double-edged stamping die. Background Technology

[0002] In the field of metal stamping, blanking is a crucial step in the production of parts, and its quality directly affects the product's precision, cross-sectional quality, and subsequent processing performance. Traditional blanking typically employs a single-edge die structure, where the cutting edge is only located on the upper or lower die, separating the material through unidirectional shearing. However, this single-edge blanking method requires high blanking force, increasing equipment energy consumption and potentially causing vibration in the die or machine tool, reducing processing stability. The single edge bears the entire shearing force, leading to localized stress concentration, making the cutting edge prone to dulling or chipping, requiring frequent die repair or replacement, increasing maintenance costs and production downtime. During single-edge blanking, the material fracture process is uneven, easily producing burrs, chipped corners, or tilted cross-sections, affecting the workpiece's dimensional accuracy and surface quality. Furthermore, traditional cutters and die holders are often integrated designs; when the cutting edge is damaged, the entire die must be replaced, resulting in high maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to provide a double-bladed stamping die to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0005] A double-edged stamping die includes: an upper die assembly and a lower die assembly arranged vertically, wherein a cutting strip is detachably provided on the lower part of the upper die assembly and the upper part of the lower die assembly; the cutting strips of the upper die assembly and the lower die assembly are respectively an upper cutter and a lower cutter, both of which have left-right extending cutting edges, and the upper cutter and the lower cutter are arranged front-back in the vertical direction with their cutting edges aligned vertically.

[0006] The double-blade stamping die provided by this utility model has at least the following beneficial effects: the upper die assembly and the lower die assembly achieve die closing and blanking by moving relative to each other in the vertical direction. During this process, the upper and lower cutting blades interlock, and the cutting edges of the upper and lower cutting blades shear and blank the material between the upper and lower die assemblies. The double-blade shearing blanking method can reduce the blanking force requirement, avoid excessive wear of the cutting edges, and improve the cross-sectional quality of the shearing and blanking. Both the upper and lower cutting blades are detachable blades, which can be disassembled and replaced in time after the cutting edges are damaged, making maintenance convenient and cost-effective.

[0007] As a further improvement to the above technical solution, both the upper mold assembly and the lower mold assembly are provided with mounting end faces perpendicular to the vertical direction. The mounting end face of the upper mold assembly is set downwards, and the mounting end face of the lower mold assembly is set upwards. The two blades are respectively mounted on the two mounting end faces.

[0008] As a further improvement to the above technical solution, the blade includes multiple blade blocks, which are arranged closely in the left-right direction to form the blade. The mounting end face is provided with multiple inserts arranged in the left-right direction, and the multiple blade blocks are installed in the inserts one by one.

[0009] As a further improvement to the above technical solution, a positioning block is provided between the insert and the cutting block, and a limiting groove is provided on the opposite side of the insert and the cutting block. The upper and lower parts of the positioning block are respectively embedded in the limiting grooves of the insert and the cutting block.

[0010] As a further improvement to the above technical solution, the positioning block and limiting groove of the upper cutter extend in the left-right direction, and the positioning block and limiting groove of the lower cutter extend in the front-back direction.

[0011] As a further improvement to the above technical solution, the blade is provided with two blades at its front and rear ends on the side away from the mounting end face.

[0012] As a further improvement to the above technical solution, the blade has a vertically extending central axis, and both ends of the blade are provided with cutting edges. The two cutting edges are arranged symmetrically around the central axis, and the cutting edges of multiple blades are connected in sequence to form the blade.

[0013] As a further improvement to the above technical solution, the cutting block is provided with a first connecting part, and the insert is provided with a second connecting part. The first connecting part and the second connecting part are detachably connected, and the second connecting part is arranged or distributed symmetrically around the central axis.

[0014] As a further improvement to the above technical solution, the second connecting part includes threaded holes arranged in pairs on the left and right, and the first connecting part includes countersunk screw holes that correspond one-to-one with the threaded holes.

[0015] As a further improvement to the above technical solution, the upper mold assembly also includes a shearing block elastically arranged in the vertical direction. The shearing block has a pressing end face, which is located on the front side of the blade of the upper cutter and aligned vertically with the lower cutter. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1This is a three-dimensional schematic diagram of an embodiment of the double-blade stamping die provided by this utility model;

[0018] Figure 2 This is another perspective view of an embodiment of the double-blade stamping die provided by this utility model;

[0019] Figure 3 yes Figure 2 A magnified view of a portion of region A in the middle;

[0020] Figure 4 This is a bottom view of an embodiment of the upper mold assembly provided by this utility model;

[0021] Figure 5 This is a top view of an embodiment of the lower mold assembly provided by this utility model.

[0022] In the diagram: 100-Upper mold assembly, 110-Upper cutter, 120-Shearing block, 121-Clamping end face, 200-Lower mold assembly, 210-Lower cutter, 220-Positioning edge, 300-Cutting strip, 310-Cutting block, 311-First connecting part, 320-Cutting edge, 321-Cutting edge, 331-Positioning block, 332-Limiting groove. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Reference Figures 1 to 5 The double-edged stamping die of this utility model is illustrated in the following embodiments:

[0028] A double-bladed stamping die includes an upper die assembly 100 and a lower die assembly 200.

[0029] The upper mold assembly 100 and the lower mold assembly 200 are arranged vertically, with the upper mold assembly 100 positioned above the lower mold assembly 200. Both the lower part of the upper mold assembly 100 and the upper part of the lower mold assembly 200 are detachably equipped with cutting blades 300. The cutting blades 300 of the upper mold assembly 100 and the lower mold assembly 200 are respectively an upper cutting blade 110 and a lower cutting blade 210. Both the upper cutting blade 110 and the lower cutting blade 210 have left-right extending blades 320. The projections of the upper cutting blade 110 and the lower cutting blade 210 in the vertical direction are arranged front-to-back, and the blades 320 of the upper cutting blade 110 and the lower cutting blade 210 are vertically aligned.

[0030] In actual use, the upper die assembly 100 and the lower die assembly 200 move relative to each other in the vertical direction to achieve die closing and blanking. During this process, the upper cutter 110 and the lower cutter 210 interlock, and the cutting edges 320 of the upper cutter 110 and the lower cutter 210 shear and blank the material between the upper die assembly 100 and the lower die assembly 200. The double-bladed shearing blanking method can reduce the blanking force requirement, avoid excessive wear of the cutting edge 321, and improve the cross-sectional quality of the shearing and blanking. Both the upper cutter 110 and the lower cutter 210 are detachable blades 300, which can be disassembled and replaced in time after the cutting edge 321 is damaged, making maintenance convenient and cost-effective.

[0031] In this embodiment, both the upper mold assembly 100 and the lower mold assembly 200 are provided with mounting end faces perpendicular to the vertical direction. The mounting end face of the upper mold assembly 100 is set downwards, and the mounting end face of the lower mold assembly 200 is set upwards. The two blades 300 are respectively mounted on the two mounting end faces.

[0032] In this embodiment, the blade 300 is a long strip extending from left to right, the cross-section of the blade 300 is rectangular, and the upper and lower sides of the blade 300 have a planar upper end surface and a lower end surface. One of the upper end surface and the lower end surface abuts against the mounting end surface, and the edge of the other end surface is provided with the blade 320.

[0033] Specifically, the upper mold assembly 100 includes an upper template, the lower side of which has a downward-facing, horizontally extending upper mounting end face. The lower mold assembly 200 includes a lower template, the upper side of which has an upward-facing, horizontally extending lower mounting end face.

[0034] The upper cutter 110 is mounted on the upper mounting end face, and the cutting edge 320 is located at the end of the upper cutter 110 away from the upper mounting end face. The lower cutter 210 is mounted on the lower mounting end face, and the cutting edge 320 of the lower cutter 210 is located at the end of the lower cutter 210 away from the lower mounting end face.

[0035] On a projection plane perpendicular to the vertical direction, the upper cutter 110 and the lower cutter 210 are arranged one behind the other, with the upper cutter 110 located behind the lower cutter 210. The cutting edge 320 of the upper cutter 110 is located at its lower front end, and the cutting edge 320 of the lower cutter 210 is located at its upper rear end. During the mold closing process of the upper mold assembly 100 and the lower mold assembly 200, the cutting edges 320 of the upper cutter 110 and the lower cutter 210 can intersect to achieve a shearing action, cutting and punching the material.

[0036] When the cutting edge 320 is worn or partially damaged due to long-term punching, in order to avoid the problem of material waste and high cost due to the need to replace the entire cutting strip 300, in this embodiment, the cutting strip 300 includes a plurality of cutting blocks 310. The plurality of cutting blocks 310 are arranged closely in the left-right direction to form the cutting strip 300. The mounting end face is provided with a plurality of inserts arranged in the left-right direction, and the plurality of cutting blocks 310 are installed in the inserts one by one.

[0037] The blade block 310 is rectangular in shape, and the left and right ends of multiple blade blocks 310 are connected one after the other to form a long strip blade 300. In actual use, when the blade 320 is worn or partially damaged, maintenance can be quickly achieved by replacing the corresponding blade block 310, reducing maintenance costs and improving production flexibility.

[0038] Furthermore, to improve the installation accuracy of the blade block 310 and prevent the blade 320 from being positioned too low, a positioning block 331 is provided between the insert and the blade block 310. A limiting groove 332 is provided on each side of the insert and the blade block 310, and the shape of the limiting groove 332 matches the shape of the positioning block 331. The upper and lower parts of the positioning block 331 are respectively embedded in the limiting groove 332 of the insert and the blade block 310. The relative position of the blade block 310 and the insert can be limited by the cooperation of the positioning block 331 and the limiting groove 332, allowing the blade block 310 to be installed more conveniently and accurately.

[0039] In this embodiment, the lower cutting blade 210 has a positioning edge 220 on its rear side, and the lower part of the rear end face of the blade block 310 abuts against the positioning edge 220. In the lower mold assembly 200, the blade block 310, the inserting limiting groove 332, and the positioning block 331 within the limiting groove 332 extend in the front-rear direction. The blade block 310, installed on the lower mounting end face, is positioned in the front-rear direction by the positioning edge 220, and the positioning installation is achieved through the cooperation of the positioning block 331 and the limiting groove 332, enabling quick installation during replacement and maintenance.

[0040] In the upper mold assembly 100, the cutting block 310, the positioning groove 332, and the positioning block 331 within the positioning groove 332 all extend in the left-right direction. The positional accuracy of the cutting block 310 in the front-back direction is achieved by the cooperation of the positioning block 331 and the positioning groove 332, so that multiple cutting blocks 310 are aligned to form a complete cutting edge 320.

[0041] If the cutting edge 321 is damaged, even if the other parts of the blade block 310 are intact, it cannot be reused, increasing the maintenance cost of the mold and resulting in low material utilization. In a further embodiment, the blade strip 300 has two cutting edges 320, which are respectively located at the front and rear ends on the side away from the mounting end face. When one of the cutting edges 320 wears out, the other cutting edge 320 can be replaced, thereby avoiding waste and improving the material utilization of the blade strip 300.

[0042] Specifically, the blade block 310 is in the shape of a cuboid, and the center of the blade block 310 has a central axis extending vertically. Both the front and rear ends of the blade block 310 are provided with cutting edges 321. The two cutting edges 321 are arranged symmetrically around the central axis, and the cutting edges 321 of multiple blade blocks 310 are connected in sequence to form the blade 320.

[0043] When the cutting edge 321 on one side of the blade block 310 wears, the blade block 310 can be rotated 180 degrees around the central axis and installed to replace the cutting edge 321 on the other side. This greatly improves the material utilization rate of the blade block 310, and facilitates material preparation and maintenance. It should be noted that the central axis is a virtual feature, set up to facilitate accurate description of the structure of the blade block 310.

[0044] To achieve symmetrical installation of the blade block 310, the blade block 310 is provided with a first connecting part 311, and the insert is provided with a second connecting part. The first connecting part 311 and the second connecting part are detachably connected. The second connecting part is centrally symmetrically arranged or centrally symmetrically distributed around the central axis.

[0045] The blade block 310 is detachably installed via a first connecting part 311 and a second connecting part. When the second connecting part is centrally symmetrically arranged or centrally symmetrically distributed around the central axis, the first connecting part 311 can match and connect with the second connecting part regardless of whether the blade block 310 is installed upright or in reverse.

[0046] In this embodiment, the second connecting part includes two threaded holes arranged in a left-right pair, symmetrically arranged on the left and right sides of the central axis. The first connecting part 311 includes screw countersunk holes corresponding to the threaded holes. Both the threaded holes and the screw countersunk holes are arranged in a left-right pair and symmetrically, and the screw countersunk holes can be aligned with the threaded holes. The cutting edge 310 is locked and fixed to the insert by connecting screws passing through the screw countersunk holes and threadedly connected to the threaded holes. When it is necessary to change the cutting edge 321 by reversing the installation, the cutting edge 310 can be rotated 180 degrees and then re-locked and fixed by loosening the connecting screws. In a further embodiment, the first connecting part 311 and the second connecting part also have vertically extending pin holes.

[0047] In this embodiment, to optimize the shearing effect, the upper die assembly 100 further includes a shearing block 120 elastically arranged in the vertical direction. The lower end of the shearing block 120 has a pressing end face 121, which is located in front of the blade 320 of the upper cutter 110 and aligned vertically with the lower cutter 210. During the downward movement of the upper die assembly 100 relative to the lower die assembly 200, the pressing end face 121 can press the material against the upper side of the lower cutter 210. Then, the blade 320 of the upper cutter 110 and the blade 320 of the lower cutter 210 intersect to achieve shearing. By using a pressing shearing method, the shearing quality of the stamping fracture can be improved.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described, those skilled in the art can make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention. All such changes, modifications, equivalent alterations or substitutions are included within the scope defined by the claims of this application, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A double-edged stamping die, characterized in that: include: An upper mold assembly and a lower mold assembly are arranged vertically. Both the lower part of the upper mold assembly and the upper part of the lower mold assembly can be detachably equipped with cutting strips. The cutting strips of the upper mold assembly and the lower mold assembly are respectively an upper cutter and a lower cutter. Both the upper cutter and the lower cutter have blades extending to the left and right. The projections of the upper cutter and the lower cutter in the vertical direction are arranged front and back, and the blades of the upper cutter and the lower cutter are aligned vertically.

2. The double-edged stamping die according to claim 1, characterized in that: Both the upper mold assembly and the lower mold assembly are provided with mounting end faces perpendicular to the vertical direction. The mounting end face of the upper mold assembly is set downwards, and the mounting end face of the lower mold assembly is set upwards. The two blades are respectively mounted on the two mounting end faces.

3. The double-edged stamping die according to claim 2, characterized in that: The blade includes multiple blade blocks, which are arranged closely together in the left-right direction to form the blade. The mounting end face is provided with multiple inserts arranged in the left-right direction, and the multiple blade blocks are installed in the inserts one by one.

4. The double-edged stamping die according to claim 3, characterized in that: A positioning block is provided between the insert and the cutting block, and a limiting groove is provided on the opposite side of the insert and the cutting block. The upper and lower parts of the positioning block are respectively embedded in the limiting grooves of the insert and the cutting block.

5. The double-edged stamping die according to claim 4, characterized in that: The positioning block and limiting groove of the upper cutter extend in the left-right direction, and the positioning block and limiting groove of the lower cutter extend in the front-back direction.

6. The double-edged stamping die according to claim 3, characterized in that: The blade is provided with two blades at its front and rear ends on the side away from the mounting end face.

7. The double-edged stamping die according to claim 6, characterized in that: The blade has a vertically extending central axis, and both ends of the blade are provided with cutting edges. The two cutting edges are arranged symmetrically around the central axis, and the cutting edges of multiple blades are connected in sequence to form the blade.

8. The double-edged stamping die according to claim 7, characterized in that: The cutting block is provided with a first connecting part, and the insert is provided with a second connecting part. The first connecting part and the second connecting part are detachably connected. The second connecting part is arranged or distributed symmetrically around the central axis.

9. The double-edged stamping die according to claim 8, characterized in that: The second connecting part includes threaded holes arranged in pairs on the left and right, and the first connecting part includes countersunk screw holes that correspond one-to-one with the threaded holes.

10. The double-edged stamping die according to claim 1, characterized in that: The upper mold assembly also includes a shearing block elastically arranged in the vertical direction. The shearing block has a pressing end face, which is located on the front side of the blade of the upper cutter and aligned vertically with the lower cutter.

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