Punching die with knife edge optimization structure
By optimizing the matching angle between the upper cutting insert and the lower cutting blade of the punching die, the problem of uneven cuts on the right-angle transition surface of the circuit board cover was solved, thereby improving the product appearance quality and reducing the rate of workplace injuries.
Patent Information
- Application Number
- CN202520457080.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-17
AI Technical Summary
When processing circuit board covers, existing punching dies are prone to stretching deformation of the right-angle transition surfaces of the products, resulting in uneven cuts and increasing the risk of burrs and workplace injuries on the product surface.
Design a punching die with an optimized blade structure. By setting an upper cutting blade insert on the upper die cutter and optimizing its matching angle with the lower die cutter and the stripper plate, the upper cutting blade insert is kept away from the angle between the vertical surface and the lower plane of the product edge material, avoiding stretching and ensuring a smooth cut.
It improved the appearance quality of the product, reduced cut deformation and burrs, and lowered the rate of workplace injuries.
Smart Images
Figure CN223904111U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of punch die, specifically relates to a die -cutting die with knife edge optimization structure. BACKGROUND
[0002] Referring to Fig. 1-2 , the product shown in the figure is a circuit board cover, wherein Fig. 1 is a semi-finished product of the circuit board cover, Fig. 2 is a finished product of the circuit board cover, and the above products are obtained by cooperating punch equipment and punch die to carry out die cutting processing on the semi-finished product, Fig. 1 A portion of the A portion, and Fig. 2 The B portion position of the B portion is a right angle transition surface, and the included angle between the horizontal plane and the vertical plane is 80-90 degrees, therefore, the knife edge between the upper die cutter and the lower die cutter on the die-cutting die needs to be provided with a surface profile.
[0003] The problem is that the die-cutting die in the prior art processes the above structure product, when the upper die cutter moves from top to bottom and cooperates with the lower die cutter, the upper die cutter and the vertical surface between the lower plane of the product edge material are contacted and downward pressure is applied to the product edge material, so that the product edge material is pulled down and the right angle transition surface of the product is stretched, the cut of the right angle transition surface of the product is deformed downward, it is difficult to guarantee the appearance quality of the product, and the deformation of the cut of the right angle transition surface of the product increases the burr on the surface of the product, when the product is manually taken and placed, the hand is easily cut when contacting the cut, the work injury rate during product production is increased, and the cost expenditure of the enterprise is increased.
[0004] Therefore, further improvement is needed. INVENTION CONTENTS
[0005] The utility model aims at at least one of the deficiencies of the prior art, and provides a die-cutting die with a knife edge optimization structure, which can guarantee the flatness of the cut of the product and improve the appearance quality of the product.
[0006] To achieve the above object, the technical scheme provided by the utility model embodiment is:
[0007] A die-cutting die with a knife edge optimization structure, comprising an upper die assembly and a lower die assembly corresponding to each other,
[0008] The upper die assembly comprises an upper die plate, an upper die cutter arranged on the upper die plate, an upper stripper plate and an upper cutter insert block, the upper die cutter is arranged around the periphery of the upper stripper plate, and the upper cutter insert block is located on the inner wall surface of the upper die cutter.
[0009] The lower die assembly comprises a lower die plate, a lower die cutter arranged on the lower die plate, and a lower stripper plate, the lower die cutter and the upper stripper plate are arranged correspondingly, and the lower stripper plate is arranged around the periphery of the lower die cutter and corresponds to the upper die cutter;
[0010] When the upper die assembly and the lower die assembly cooperate with each other, the upper stripper plate cooperates with the lower die cutter to press the product tightly, the upper die cutter and the upper cutter insert block respectively cooperate with the lower stripper plate to press the product edge tightly, and the upper die cutter and the upper cutter insert block respectively cooperate with the lower die cutter to cut off the product edge and make the cut of the product smooth.
[0011] The upper cutter insert block is two and is arranged on the left side inner wall surface and the right side inner wall surface of the upper die cutter respectively and close to the front side surface of the upper die cutter;
[0012] The lower stripper plate comprises a lower stripper body and a first lower stripper insert block, the first lower stripper insert block is embedded on the top surface of the lower stripper body, and the first lower stripper insert block is two and cooperates with the two upper cutter insert blocks respectively.
[0013] The upper cutter insert block comprises a cutting part, an upper pressing part, a side pressing part, and a lower pressing part arranged in sequence from top to bottom, the cutting part cooperates with the lower die cutter to cut off the product edge, the upper pressing part cooperates with the first lower stripper insert block to press the upper plane of the product edge tightly, the side pressing part cooperates with the first lower stripper insert block to press the vertical surface of the product edge tightly, and the lower pressing part cooperates with the lower stripper body to press the lower plane of the product edge tightly.
[0014] The included angle between the vertical surface of the first lower stripper insert block and the lower plane of the first lower stripper insert block is C, 90°≤C≤110°, and the included angle between the side pressing part and the lower pressing part is D, 110°≤D≤130°.
[0015] The upper die cutter comprises a first punching insert block, a second punching insert block, a third punching insert block, and a fourth punching insert block, the first punching insert block and the second punching insert block are arranged in the front-rear direction of the upper die cutter, the third punching insert block is two and is arranged at the left and right ends of the first punching insert block respectively, and the fourth punching insert block is two and is arranged at the left and right ends of the second punching insert block respectively.
[0016] The lower stripper plate further comprises a second lower stripper insert block, the second lower stripper insert block is embedded on the top surface of the lower stripper body and is located at the back side of the lower die cutter and cooperates with the upper die cutter to press the product edge tightly.
[0017] The upper die assembly further comprises an upper die backing plate, an upper stripper backing plate, and an upper supporting plate, the upper die backing plate is arranged between the upper die plate and the upper die cutter, the upper stripper backing plate is arranged on the bottom surface of the upper die plate, and the upper supporting plate is arranged on the top surface of the upper die plate.
[0018] The upper die assembly further comprises an upper reset component for downward resetting of the upper stripper plate, which is arranged between the upper die plate and the upper stripper plate and penetrates the upper stripper gasket.
[0019] The lower die assembly comprises a lower die gasket, a lower gasket, a lower support plate and a lower support plate, the lower die gasket is arranged on the bottom surface of the lower die cutter, the lower gasket is arranged between the lower die gasket and the lower die plate, the lower support plate is arranged on the bottom surface of the lower gasket, and the lower support plate is arranged on the bottom surface of the lower support plate.
[0020] The lower die assembly further comprises a lower reset component for upward resetting of the lower stripper plate, which is arranged between the lower die plate and the lower stripper plate and penetrates the lower gasket.
[0021] The utility model discloses the beneficial effect is as follows:
[0022] The utility model discloses a punching die which is provided with an upper cutter insert on an upper die plate, the upper cutter insert is located on the inner side wall of the upper die cutter and cooperates with the lower die cutter and the lower stripper plate, the working part of the upper cutter insert is partially optimized and the angle is increased, so that the upper cutter insert is away from the angle between the vertical surface and the lower plane of the product edge material, the product edge material is prevented from being pressed downward when the upper cutter insert goes down, stretching phenomenon is avoided and the cut is more flat, and the appearance quality of the product is ensured.
[0023] The punching die can reduce the deformation of the right-angle transition surface of the product to some extent, thereby reducing the burrs on the surface of the product and the situation that the hand is cut when contacting the cut, and the work injury rate during product production can be reduced to some extent. DRAWINGS
[0024] Fig. 1 It is a structure schematic view of a semi-finished circuit board cover.
[0025] Fig. 2 It is a structure schematic view of a finished circuit board cover.
[0026] Fig. 3 It is a structure schematic view of a punching die of an embodiment of the utility model.
[0027] Fig. 4 It is a sectional view of a punching die of an embodiment of the utility model.
[0028] Fig. 5 It is Fig. 4 The enlarged view of E part.
[0029] Fig. 6 It is an exploded view of an upper die assembly of an embodiment of the utility model.
[0030] Fig. 7It is the exploded view of the upper die cutter and the upper cutter insert of the utility model one embodiment.
[0031] Fig. 8 It is the structural schematic view of the upper cutter insert of the utility model one embodiment.
[0032] Fig. 9 It is the exploded view of the lower die assembly of the utility model one embodiment.
[0033] Fig. 10 It is the exploded view of the lower discharge plate of the utility model one embodiment.
[0034] Fig. 11 It is the working schematic view of the punching die of the utility model one embodiment.
[0035] Fig. 12 It is the working schematic view of the punching die of the utility model one embodiment. DETAILED DESCRIPTION
[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments.
[0037] Reference Fig. 1-12 , the punching die with the knife edge optimization structure has the upper and lower corresponding upper die assembly 1 and lower die assembly 2;
[0038] The upper die assembly 1 includes the upper die plate 11, the upper die cutter 12, the upper discharge plate 13, the upper cutter insert 14, the upper die cushion plate 15, the upper discharge cushion plate 16 and the upper supporting plate 17, the upper die cutter 12, the upper discharge plate 13 and the upper cutter insert 14 are all arranged on the bottom surface of the upper die plate 11, the upper die cutter 12 is annular and is arranged around the periphery of the upper discharge plate 13, the number thereof is preferably two and is respectively located on the left side inner wall surface and the right side inner wall surface of the upper die cutter 12 and is close to the front side surface of the upper die cutter 12, the upper die cushion plate 15 is arranged between the upper die plate 11 and the upper die cutter 12, the upper discharge cushion plate 16 is arranged on the bottom surface of the upper die plate 11, and the upper supporting plate 17 is arranged on the top surface of the upper die plate 11;
[0039] The lower die assembly 2 comprises a lower die plate 21, a lower die cutter 22, a lower stripper plate 23, a lower die cushion plate 24, a lower cushion plate 25, a lower support plate 26 and a lower support plate 27, the lower die cutter 22 and the lower stripper plate 23 are arranged on the top surface of the lower die plate 21, the lower stripper plate 23 comprises a lower stripper plate body 230 and a first lower stripper plate insert 231, the lower stripper plate body 230 is annular and arranged around the periphery of the lower die cutter 22 and corresponds to the upper die cutter 12, the first lower stripper plate insert 231 is embedded on the top surface of the lower stripper plate body 230 and close to the lower die cutter 22, the number of the first lower stripper plate insert 231 is preferably two to match the upper cutter insert 14, the lower die cushion plate 24 is arranged on the bottom surface of the lower die cutter 22, the lower cushion plate 25 is arranged between the lower die cushion plate 24 and the lower die plate 21, the lower support plate 26 is arranged on the bottom surface of the lower cushion plate 25, and the lower support plate 27 is arranged on the bottom surface of the lower support plate 26;
[0040] When the upper die assembly 1 and the lower die assembly 2 cooperate with each other, first, the upper stripper plate 13 cooperates with the lower die cutter 22 to press the product tightly, the upper die cutter 12 cooperates with the lower stripper plate 23 to press the edge material outside the product tightly, and the upper cutter insert 14 cooperates with the lower stripper plate 23 to press the edge material of the right-angle transition surface of the product tightly, then, the upper die cutter 12 cooperates with the lower die cutter 22 to cut off the edge material outside the product, and the upper cutter insert 14 cooperates with the lower die cutter 22 to cut off the edge material of the right-angle transition surface of the product;
[0041] Through the above technical scheme, the upper cutter insert is arranged on the upper die plate 11, the upper cutter insert is located on the inner side wall of the upper die cutter 12 and cooperates with the lower die cutter 22 and the lower stripper plate 23 respectively, because the working part of the upper cutter insert is locally optimized and the angle is increased, the upper cutter insert is away from the angle between the vertical surface of the product edge material and the lower plane, avoiding the downward pressure on the product edge material when the upper cutter insert goes down, avoiding the stretching phenomenon and making the cut more flat, and ensuring the appearance quality of the product.
[0042] Through the use of the above technical scheme of the punching die, the cut deformation of the right-angle transition surface of the product can be reduced to a certain extent, thereby reducing the burrs on the surface of the product and reducing the risk of being cut when the hand touches the cut, and the work injury rate during product production can be reduced to a certain extent.
[0043] Further, in the embodiment, the upper cutter insert 14 comprises a cutting part 140, an upper pressing part 141, a side pressing part 142 and a lower pressing part 143. Specifically, the cutting part 140, the upper pressing part 141 and the side pressing part 142 are located on the side of the upper cutter insert 14 close to the upper stripper plate 13, and the lower pressing part 143 is located on the bottom surface of the upper cutter insert 14. When the upper die assembly 1 cooperates with the lower die assembly 2, the cutting part 140 cooperates with the lower die cutter 22 to cut off the product edge material, the upper pressing part 141 cooperates with the top surface of the first lower stripper insert 231 to press the upper surface of the product edge material, the side pressing part 142 cooperates with the side surface of the first lower stripper insert 231 to press the vertical surface of the product edge material, and the lower pressing part 143 cooperates with the lower stripper body 230 to press the lower surface of the product edge material. Through the above technical solutions, the product edge material of the right-angle transition surface is pressed, and the product edge material of the right-angle transition surface is cut off and the knife edge at this position is flat, which can be understood by those skilled in the art.
[0044] Further, in the embodiment, the angle between the vertical surface of the first lower stripper insert 231 and the lower surface of the first lower stripper insert 231 is C, and C is preferably 100°. The angle between the side pressing part 142 of the upper cutter insert 14 and the lower pressing part 143 of the upper cutter insert 14 is D, and D is preferably 120°. Through the above technical solutions, the working part of the upper cutter insert is locally optimized and the angle is increased, so that the upper cutter insert is away from the angle between the vertical surface and the lower surface of the product edge material, and the product edge material is prevented from being subjected to downward pressure when the upper cutter insert descends. Those skilled in the art can understand this.
[0045] Further, the upper die cutter 12 comprises a first punching insert 120, a second punching insert 121, a third punching insert 122 and a fourth punching insert 123. Specifically, in the embodiment, the number of the first punching insert 120 and the second punching insert 121 is one, and they are arranged in the front-rear direction of the upper die cutter 12. The third punching insert 122 is two and is arranged at the left and right ends of the first punching insert 120, and the fourth punching insert 123 is two and is arranged at the left and right ends of the second punching insert 121. Through the above technical solutions, the shapes of the inserts constituting the upper die cutter 12 are all square, which is simple in structure and easy to process. When the upper die cutter 12 is damaged, only the damaged insert needs to be replaced, thereby reducing the maintenance cost of the punching die. Those skilled in the art can understand this.
[0046] Further, the lower discharge plate 23 further comprises a second lower discharge insert 232, specifically, in the embodiment, the second lower discharge insert 232 is embedded on the top surface of the lower discharge body 230 and located at the rear side of the lower die cutter 22, preferably two pieces and arranged in sequence in the left-right direction of the lower discharge plate 23, the second lower discharge insert 232 cooperates with the upper die cutter 12 to press the rear side edge material of the product, through the above technical scheme, the second lower discharge insert 232 and the lower discharge body 230 can be processed separately, so that the structure of the lower discharge plate 23 is simple, the processing difficulty of the lower discharge plate 23 is reduced, and processing is facilitated, which can be understood by those skilled in the art.
[0047] Further, the upper die assembly 1 further comprises an upper reset component 18, specifically, in the embodiment, the upper reset component 18 is preferably a spring, or polyurethane glue, or neoprene rubber, preferably fourteen pieces and uniformly arranged between the upper die plate 11 and the upper discharge plate 13 and penetrating the upper discharge pad 16, through the above technical scheme, when the upper die assembly 1 and the lower die assembly 2 are separated from each other, the upper discharge plate 13 is reset downward under the elastic action of the upper reset component 18, so as to facilitate the product to be unloaded from the upper die assembly 1, which can be understood by those skilled in the art.
[0048] Further, the lower die assembly 2 further comprises a lower reset component 28, specifically, in the embodiment, the lower reset component 28 is preferably a spring, or polyurethane glue, or neoprene rubber, preferably twelve pieces and uniformly arranged between the lower die plate 21 and the lower discharge plate 23 and penetrating the lower pad 25, through the above technical scheme, when the upper die assembly 1 and the lower die assembly 2 are separated from each other, the lower discharge plate 23 is reset upward under the elastic action of the lower reset component 28, so as to facilitate the product edge material to be unloaded from the lower die assembly 2, which can be understood by those skilled in the art.
[0049] The above is the preferred scheme of the present application, which shows and describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, the above embodiments and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, which fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A die having a knife edge optimization structure, characterized by: The upper die assembly (1) and the lower die assembly (2) are corresponded to each other; The upper die assembly (1) comprises an upper die plate (11), an upper die cutter (12) arranged on the upper die plate (11), an upper stripper plate (13) and an upper cutter insert (14), the upper die cutter (12) is arranged around the periphery of the upper stripper plate (13), and the upper cutter insert (14) is located on the inner wall surface of the upper die cutter (12); The lower die assembly (2) comprises a lower die plate (21), a lower die cutter (22) arranged on the lower die plate (21) and a lower stripper plate (23), the lower die cutter (22) is arranged correspondingly to the upper stripper plate (13), and the lower stripper plate (23) is arranged around the periphery of the lower die cutter (22) and corresponds to the upper die cutter (12); When the upper die assembly (1) and the lower die assembly (2) are matched, the upper stripper plate (13) and the lower die cutter (22) are matched to press the product tightly, the upper die cutter (12) and the upper cutter insert (14) are respectively matched with the lower stripper plate (23) to press the product edge tightly, and the upper die cutter (12) and the upper cutter insert (14) are respectively matched with the lower die cutter (22) to cut off the product edge and make the cut of the product smooth.
2. The die cutting mold having a blade optimization structure according to claim 1, wherein, The upper cutter insert (14) is two and is respectively located on the left inner wall surface and the right inner wall surface of the upper die cutter (12) and is close to the front side surface of the upper die cutter (12); The lower stripper plate (23) comprises a lower stripper body (230) and a first lower stripper insert (231), the first lower stripper insert (231) is embedded on the top surface of the lower stripper body (230), and the first lower stripper insert (231) is two and is matched with the two upper cutter inserts (14) respectively.
3. The die cutting mold having a blade optimization structure according to claim 2, wherein, The upper cutter insert (14) comprises a cutting part (140), an upper pressing part (141), a side pressing part (142) and a lower pressing part (143) arranged in sequence from top to bottom, the cutting part (140) is matched with the lower die cutter (22) to cut off the product edge, the upper pressing part (141) is matched with the first lower stripper insert (231) to press the upper surface of the product edge tightly, the side pressing part (142) is matched with the first lower stripper insert (231) to press the vertical surface of the product edge tightly, and the lower pressing part (143) is matched with the lower stripper body (230) to press the lower surface of the product edge tightly.
4. The die cutting mold having a blade optimization structure according to claim 3, wherein, The angle between the vertical surface of the first lower stripper insert (231) and the lower surface of the first lower stripper insert (231) is C, 90°≤C≤110°, and the angle between the side pressing part (142) and the lower pressing part (143) is D, 110°≤D≤130°.
5. The die cutting mold having a blade optimization structure according to claim 2, wherein, The upper die cutting knife (12) comprises a first die cutting insert (120), a second die cutting insert (121), a third die cutting insert (122) and a fourth die cutting insert (123), the first die cutting insert (120) and the second die cutting insert (121) are arranged in the front-rear direction of the upper die cutting knife (12), the third die cutting insert (122) is two and is arranged at the left and right ends of the first die cutting insert (120) respectively, and the fourth die cutting insert (123) is two and is arranged at the left and right ends of the second die cutting insert (121) respectively.
6. The die cutting mold having a blade optimization structure according to claim 2, wherein, The lower ejection plate (23) further comprises a second lower ejection insert (232), the second lower ejection insert (232) is embedded on the top surface of the lower ejection body (230) and is located at the rear side of the lower die cutting knife (22) and cooperates with the upper die cutting knife (12) to press the product edge material tightly.
7. The die according to any one of claims 1 to 6, wherein The upper die assembly (1) further comprises an upper die pad (15), an upper ejection pad (16) and an upper supporting plate (17), the upper die pad (15) is arranged between the upper die plate (11) and the upper die cutting knife (12), the upper ejection pad (16) is arranged on the bottom surface of the upper die plate (11), and the upper supporting plate (17) is arranged on the top surface of the upper die plate (11).
8. The die cutting mold having a blade optimization structure according to claim 7, wherein, The upper die assembly (1) further comprises an upper reset component (18) for downward resetting of the upper ejection plate (13), the upper reset component (18) is arranged between the upper die plate (11) and the upper ejection plate (13) and penetrates the upper ejection pad (16).
9. The die according to any one of claims 1 to 6, wherein The lower die assembly (2) comprises a lower die pad (24), a lower pad (25), a lower supporting plate (26) and a lower supporting plate (27), the lower die pad (24) is arranged on the bottom surface of the lower die cutting knife (22), the lower pad (25) is arranged between the lower die pad (24) and the lower die plate (21), the lower supporting plate (26) is arranged on the bottom surface of the lower pad (25), and the lower supporting plate (27) is arranged on the bottom surface of the lower supporting plate (26).
10. The die cutting mold having a blade optimization structure according to claim 9, wherein, The lower die assembly (2) further comprises a lower reset component (28) for upward resetting of the lower ejection plate (23), the lower reset component (28) is arranged between the lower die plate (21) and the lower ejection plate (23) and penetrates the lower pad (25).