CN216911714U - Precision die for improving roughness of cut surface of product - Google Patents

Abstract

The utility model belongs to the technical field of stamping dies, and particularly relates to a precision die for improving the roughness of a product fracture surface, which comprises an upper die set and a lower die set positioned below the upper die set, wherein the upper die set comprises an upper die base, an upper clamping plate is fixedly arranged at the lower end of the upper die base, a stripper plate is arranged below the upper clamping plate, the lower die set comprises a lower die base and a lower die plate positioned on the upper surface of the lower die base, a stripper plate pressing block is fixedly embedded in the stripper plate, and male die punches fixedly connected with the upper clamping plate are movably arranged at two sides of the stripper plate pressing block in the stripper plate. According to the utility model, through the interaction of the stripper and the stripper plate pressing block, a workpiece is simultaneously subjected to the supporting force from the stripper and the pressure of the stripper plate pressing block, when the punch is pressed down, the stripper is forced to move down, the workpiece starts to be sheared, the punch continues to move down, at the moment, the lower die cutter moves up, the workpiece is stamped, and thus the stamped cut surface is smoother.

Description

Precision die for improving roughness of cut surface of product

Technical Field

The utility model relates to the technical field of stamping dies, in particular to a precision die for improving the roughness of a cut surface of a product.

Background

The stamping die is a special process device for processing materials into parts in cold stamping. The stamping die is indispensable technological equipment for stamping production and is a technology-intensive product. The quality, production efficiency, production cost and the like of the stamping part are directly related to the design and manufacture of the die.

In sheet metal component stamping process, need punch a hole on the sheet metal component, because the die blade extrudees each other and tensile, the plastic deformation of production, from the section, it is sunken down, form the punching press and collapse the angle, when processing to the ultra-precise sheet metal component that thickness is greater than 0.5mm, adopt current single action mold production, under power device's promotion, make blanking drift on the upper die frame to the direction punching press of sheet metal component and with the coincidence of lower die carrier, nevertheless because a punching press can make the stability and the efficiency of product can not reach the requirement, the section of a broken face on the sheet metal component by the punching press is very coarse, can produce the burr. If the continuous die is adopted for production, the existing continuous die is usually processed in a blanking mode according to requirements in the processing process, and a punch directly punches the sheet metal part in the blanking process by adopting the blanking processing mode, so that the cut surface and the flatness of the sheet metal part cannot meet the requirements.

Chinese patent publication No. CN204603057U discloses a continuous die for improving fracture surface and flatness, which comprises an upper die base and a lower die base, wherein the upper die base is fixedly provided with an upper die base and a blanking punch, the upper die base is provided with a blanking slideway, the lower die base is fixedly provided with a female die, the female die is provided with a blanking channel, the upper die base and the lower die base are also provided with half-cutting parts, and the half-cutting parts comprise half-cutting punches fixedly arranged on the upper die base. This patent carries out half-cut processing to the panel beating through the adoption earlier and forms half-cut product, then carries out punching press once more to the panel beating through the blanking drift, makes the disconnected tangent plane of punching press more level and more smooth like this, but the stability of this structure is relatively poor, when the upper surface butt sheet metal component of half-cut stopper, can not balanced effort, causes the waste material very easily, influences the production quality of product.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the precision die for improving the roughness of the cut surface of the product, the stress condition of a workpiece is improved by downwards pressing a male die and upwards moving a lower die cutter, the half cutting of the workpiece is completed, the stamping stability is improved, and the problems of corner collapse and burrs generated in the stamping process of a sheet metal part are solved.

(II) technical scheme

The utility model specifically adopts the following technical scheme for realizing the purpose:

the utility model provides an improve accurate mould of product disconnected tangent plane roughness, includes the module and is located the lower module of module below, it includes the upper die base to go up the module, the lower extreme fixed mounting of upper die base has the punch holder, the below of punch holder is equipped with takes off the flitch, the module includes the die holder and is located the lower bolster of die holder upper surface down, it inlays and is equipped with and takes off the flitch briquetting to take off the flitch internal fixation, and takes off the inside of flitch and be located the both sides movable mounting that takes off the flitch briquetting and punch the punch with punch holder fixed connection, the inside movable mounting of lower bolster has the stripper with punch adaptation, two clearance formation movable groove between the stripper, the inside movable mounting in movable groove has the die cutter down.

Furthermore, a spring is arranged between the lower end of each stripper and the bottom of the lower template, and the upper ends of the two strippers protrude out of the upper surface of the lower template.

Furthermore, one corner of the lower end of the male punch close to the stripper plate pressing block is an acute angle, and one corner of the lower end of the male punch far away from the stripper plate pressing block is an obtuse angle.

Furthermore, the lower end of the punch is provided with a wear-resistant layer, and the wear-resistant layer is a titanium-plated metal layer.

Furthermore, the upper end of the lower die cutter is abutted against the lower end of the stripper plate pressing block, and the longitudinal section of the upper end of the lower die cutter is of a trapezoidal structure.

Further, an upper backing plate is arranged between the upper die holder and the upper clamping plate, and a lower backing plate is arranged between the lower die holder and the lower die plate.

(III) advantageous effects

Compared with the prior art, the utility model provides the precision die for improving the roughness of the cut surface of the product, and the precision die has the following beneficial effects:

1. according to the utility model, through the interaction of the stripper and the stripper plate pressing block, a workpiece is simultaneously subjected to the supporting force from the stripper and the pressure of the stripper plate pressing block, when the punch is pressed down, the stripper is forced to move downwards, the workpiece starts to be sheared, the punch continues to move downwards until the die is closed, at the moment, the lower die cutter moves upwards, the workpiece is stamped, and thus the stamped cut surface is smoother.

2. According to the utility model, by arranging the stripper plate pressing block and the two strippers, the stability of the workpiece during fixing can be improved, the stress uniformity of the workpiece is improved, and the workpiece is prevented from shifting, so that the defective rate is reduced.

3. According to the utility model, the angle of the punching feed is changed by arranging the wedge-shaped structure at the lower end of the punch and the trapezoid structure at the upper end of the lower die cutter, so that the broken section is prevented from collapsing, and the broken section is smoother.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic structural view of a punch and a lower die cutter of the present invention;

fig. 3 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention.

In the figure: 1. an upper die holder; 2. an upper splint; 3. a material removing plate; 4. a lower die holder; 5. a lower template; 6. an upper base plate; 7. a lower base plate; 8. punching by a male die; 9. pressing a stripping plate; 10. a stripper; 11. a lower die cutter; 12. a movable groove; 13. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1, 2 and 3, a precision mold for improving the roughness of a cut surface of a product according to an embodiment of the present invention includes an upper mold unit and a lower mold unit located below the upper mold unit, the upper mold unit includes an upper mold base 1, an upper clamping plate 2 is fixedly installed at the lower end of the upper mold base 1, a stripper plate 3 is located below the upper clamping plate 2, the lower mold unit includes a lower mold base 4 and a lower mold plate 5 located on the upper surface of the lower mold base 4, a stripper plate pressing block 9 is fixedly embedded in the stripper plate 3, male mold punches 8 fixedly connected to the upper clamping plate 2 are movably installed inside the stripper plate 3 at two sides of the stripper plate pressing block 9, strippers 10 adapted to the male mold punches 8 are movably installed inside the lower mold plate 5, a movable groove 12 is formed in a gap between the two strippers 10, a lower mold cutter 11 is movably installed inside the movable groove 12, and when in use, the stripper plate 10 and the stripper plate 9 interact with each other, the workpiece is subjected to the supporting force from the stripper 10 and the pressure of the stripper plate pressing block 9 at the same time, the stability of the workpiece in the fixing process can be improved, the uniformity of the stress of the workpiece is improved, and the workpiece is prevented from shifting, so that the defective rate is reduced, when the punch 8 is pressed down, the stripper 10 is pressed down by the spring 13, the workpiece is sheared, the punch 8 continues to move down until the die is closed, at the moment, the elastic force of the spring 13 reaches the maximum, the upper end of the stripper 10 is flush with the lower die plate 5, and meanwhile, the lower die cutter 11 moves up, so that the workpiece is stamped.

As shown in fig. 1 and 2, in some embodiments, a spring 13 is installed between the lower end of the stripper 10 and the bottom of the lower template 5 for the movement and return of the stripper 10, and the upper ends of the two strippers 10 protrude out of the upper surface of the lower template 5, which is beneficial to better support the workpiece.

As shown in fig. 3, in some embodiments, an angle of the lower end of the punch 8 close to the stripper plate pressing block 9 is an acute angle, and an angle of the lower end of the punch 8 far from the stripper plate pressing block 9 is an obtuse angle, so that the needle inserting angle of the punch 8 is changed, thereby preventing the fracture surface from collapsing and enabling the fracture surface to be smoother.

As shown in fig. 3, in some embodiments, the lower end of the punch 8 is provided with a wear-resistant layer, which is a titanium-plated metal layer, so as to improve the service life of the punch 8.

As shown in fig. 3, in some embodiments, the upper end of the lower die cutter 11 abuts against the lower end of the stripper plate pressing block 9, and the longitudinal section of the upper end of the lower die cutter 11 is of a trapezoidal structure, so that the feed angle of the lower die cutter 11 is changed, thereby avoiding the occurrence of corner collapse of the cut surface and further flattening the cut surface.

As shown in fig. 1, in some embodiments, an upper pad 6 is installed between the upper die base 1 and the upper clamp plate 2 to mainly perform a buffering function, and a lower pad 7 is installed between the lower die base 4 and the lower die plate 5 to mainly buffer a pressure of the lower die plate 5.

The principle of the utility model is as follows: when in use, the workpiece is simultaneously subjected to the supporting force from the stripper 10 and the pressure of the stripper pressing block 9 through the interaction of the stripper 10 and the stripper pressing block 9, so that the stability of the workpiece in fixing can be improved, the stress uniformity of the workpiece is improved, the workpiece is prevented from shifting, and the defective rate is reduced, when the punch 8 is pressed down, the stripper 10 is pressed down by the spring 13, the workpiece starts to be sheared, the punch 8 continues to move down until the die is closed, at the moment, the elasticity of the spring 13 reaches the maximum, the upper end of the stripper 10 is flush with the lower template 5, meanwhile, the lower die cutter 11 moves up, so that the workpiece is punched, in addition, the angle of the punching feed knife is changed through the arrangement of the wedge-shaped structure at the lower end of the punch 8 and the trapezoid-shaped structure at the upper end of the lower die cutter 11, so as to prevent the broken tangent plane from collapsing, the cut surface is smoother.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides an improve disconnected tangent plane roughness's of product precision mould, includes the upper die set and is located the lower module of upper die set below, the upper die set includes upper die base (1), the lower extreme fixed mounting of upper die base (1) has punch holder (2), the below of punch holder (2) is equipped with takes off flitch (3), the lower module includes die holder (4) and is located lower bolster (5) of die holder (4) upper surface, its characterized in that: the stripper plate is characterized in that a stripper plate pressing block (9) is embedded in the stripper plate (3), male die punches (8) fixedly connected with the upper clamping plate (2) are movably mounted on two sides of the stripper plate pressing block (9) inside the stripper plate (3), stripper plates (10) matched with the male die punches (8) are movably mounted inside the lower clamping plate (5), a movable groove (12) is formed in a gap between the stripper plates (10), and lower die cutters (11) are movably mounted inside the movable groove (12).

2. The precision mold for improving the roughness of the cut surface of a product as claimed in claim 1, wherein: a spring (13) is arranged between the lower end of each stripper (10) and the bottom of the lower template (5), and the upper ends of the two strippers (10) protrude out of the upper surface of the lower template (5).

3. The precision mold for improving the roughness of the cut surface of a product as claimed in claim 1, wherein: an angle of the lower end of the punch (8) close to the stripper plate pressing block (9) is an acute angle, and an angle of the lower end of the punch (8) far away from the stripper plate pressing block (9) is an obtuse angle.

4. The precision mold for improving the roughness of the cut surface of a product as claimed in claim 1, wherein: the lower end of the punch (8) is provided with a wear-resistant layer, and the wear-resistant layer is a titanium-plated metal layer.

5. The precision mold for improving the roughness of the cut surface of a product as claimed in claim 1, wherein: the upper end of the lower die cutter (11) is abutted against the lower end of the stripper plate pressing block (9), and the longitudinal section of the upper end of the lower die cutter (11) is of a trapezoidal structure.

6. The precision mold for improving the roughness of the cut surface of a product as claimed in claim 1, wherein: an upper backing plate (6) is installed between the upper die holder (1) and the upper clamping plate (2), and a lower backing plate (7) is installed between the lower die holder (4) and the lower die plate (5).

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