CN219503529U - Thick material fine blanking die - Google Patents

Abstract

The utility model provides a thick material fine blanking die which comprises a blanking upper die, a blanking lower die matched with the blanking upper die, a floating plate, an inner stripping block and a top block, wherein the upper die is arranged on the blanking upper die; a female die is arranged in the upper stamping die, an inner stripping block is movably arranged in the female die, and the top of the inner stripping block is connected with the upper stamping die through a first elastic structure; a male die is arranged in the lower stamping die, the bottom of the male die is connected with the lower stamping die, and a positioning pin used for positioning the part is arranged on the male die; the floating plate is movably sleeved outside the male die and connected with the stamping lower die through a second elastic structure; the bottom both sides of punching press upper die all are equipped with the kicking block in the position that corresponds the floating plate. The utility model has the advantages that: the peripheral brightness of part can be effectively promoted, and then product precision is promoted, machining efficiency can also be promoted simultaneously, the processing degree of difficulty is reduced and processing cost is reduced.

Description

Thick material fine blanking die

[ field of technology ]

The utility model relates to the technical field of stamping dies, in particular to a thick material fine stamping die.

[ background Art ]

A stamping die is a device that processes a material (e.g., a hardware stamping) into a part or semi-finished product. In the actual processing process, the thickness of the part material is determined by the characteristics and the use characteristics of different products; for thick materials, the blanking section is larger, and the precision requirement of the electronic element is high, so that the requirements on the bright band are higher.

In order to solve the problem of bright bands of thick materials, the Chinese patent application with the filing date of CN202120532735.4 discloses an internal control collapse bright band treatment device of a stamping product, which comprises a stamping module, wherein a stamping rod is clamped in the middle of the inside of the stamping module, the bottom end of the inside of the stamping module is clamped with the stamping product through a clamping block, the bottom end of the stamping rod is in threaded connection with a stamping head, the stamping head comprises a plurality of sections of stamping heads and a threaded fixing block, the plurality of sections of stamping heads are in threaded connection with the bottom end of the stamping rod through the threaded fixing block, the stamping product comprises a stamping hole and a burr edge, the stamping hole is formed in the center of the stamping product, and the burr edge is formed at the upper end of the surface of the stamping product; the processing device can achieve the effects that the gap is small, the area of the bright band at the edge of the product blanking is large, the edge is cut off and collapsed, and the precision and the brightness of the punched product are ensured. However, the processing device can only be used for processing the punched holes of the product, but cannot process the periphery of the product and ensure the brightness; as shown in fig. 1, after the rough cutting, the periphery of the part 100 'needs to be processed to ensure the brightness of the periphery of the part 100', wherein the middle part of the part 100 'is provided with a product positioning hole 200'; in the past, the peripheral edge of the part 100' was treated by mechanical polishing or chemical polishing, which had a problem of low processing efficiency. Accordingly, it is desirable to provide a mold that can perform fine blanking treatment on the periphery of a part and ensure the brightness.

[ utility model ]

The utility model aims to solve the technical problem of providing a thick material fine blanking die which can realize fine blanking treatment on the periphery of a part with a product positioning hole and can improve the processing efficiency.

The utility model is realized in the following way: a thick material fine blanking die comprises a blanking upper die, a blanking lower die matched with the blanking upper die, a floating plate, an inner stripping block and a top block;

a female die is arranged in the stamping upper die, the inner stripping block is movably arranged in the female die, and the top of the inner stripping block is connected with the stamping upper die through a first elastic structure;

a male die is arranged in the lower stamping die, the bottom of the male die is connected with the lower stamping die, and a positioning pin used for positioning the part is arranged on the male die; the floating plate is movably sleeved outside the male die and connected with the stamping lower die through a second elastic structure; the top blocks are arranged on two sides of the bottom of the stamping upper die at positions corresponding to the floating plates.

Further, the first elastic structure comprises a nitrogen spring; the upper end of the nitrogen spring is fixedly connected with the stamping upper die, and the lower end of the nitrogen spring is connected with the top of the inner stripping block.

Further, the female die is provided with a product cavity in a penetrating mode, and the inner stripping block is arranged in the product cavity in a vertically sliding mode.

Further, the gap between the inner wall of the female die and the outer wall of the male die is 0.4% of the thickness of the material to be punched.

Further, the gap between the inner wall of the female die and the outer wall of the male die is 0.03mm.

Further, the inner stripping block extends out to the lower part of the female die before stamping.

Further, the second elastic structure comprises a spring and a jack post;

an assembly cavity is formed in the stamping lower die, and the spring and the jacking column are installed in the assembly cavity; the upper portion of jack-prop is connected with the float plate, the stopper has been set firmly at the middle part of jack-prop, the upper end of spring supports in the stopper, the lower extreme of spring supports in the bottom of assembly cavity.

Further, 4 second elastic structures are arranged between the floating plate and the stamping lower die around the female die.

Furthermore, 4 guide posts are arranged at the bottom of the stamping upper die at the outer side of the female die, and guide post holes are formed in the top of the stamping lower die at positions corresponding to the guide posts.

Further, 2 positioning pin columns are arranged on the male die.

By adopting the technical scheme of the utility model, the utility model has at least the following beneficial effects: an inner stripping block and a first elastic structure are arranged in a female die of the upper stamping die, a floating plate is movably sleeved outside a male die of the lower stamping die, the floating plate is connected with the lower stamping die through a second elastic structure, and a positioning pin is arranged on the male die; before the punch and the die are matched to punch the material to be punched, the material to be punched can be positioned on the floating plate by utilizing the positioning pin, and before the die assembly and the die punching of the punch and the die, the material to be punched can be pressed downwards by the inner stripping block, and then the gap design between the inner wall of the die and the outer wall of the punch is combined, so that the part to be punched can be well extruded and limited in the whole punching process, the generation of a tearing belt and a fillet belt is avoided, the brightness of the periphery of a part can be effectively improved, and the product precision is further improved; meanwhile, compared with the mode of mechanical polishing or chemical polishing, the method can effectively improve the processing efficiency, reduce the processing difficulty and reduce the processing cost.

[ description of the drawings ]

The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a prior art part;

FIG. 2 is a front view of the thick stock fine blanking die of the present utility model in a closed state;

FIG. 3 is a side view of the thick stock fine blanking die of the present utility model in a clamped state;

FIG. 4 is an overall construction view of the stamping upper die of the present utility model;

FIG. 5 is a cross-sectional view of the stamping upper die of the present utility model;

FIG. 6 is an overall construction view of a lower press die according to the present utility model;

FIG. 7 is a cross-sectional view of the thick stock fine blanking die of the present utility model in a clamped state;

FIG. 8 is a schematic view of the connection of the first elastic structure and the inner release block in the present utility model.

Reference numerals illustrate:

100 '-parts, 200' -product positioning holes;

100-fine blanking die, 1-upper stamping die, 11-upper die holder, 12-upper backing plate, 13-first fixed plate, 14-concave die plate, 15-guide column, 2-lower stamping die, 21-lower die holder, 22-lower backing plate, 23-second fixed plate, 24-assembly chamber, 25-guide column hole, 3-floating plate, 4-inner stripping block, 5-top block, 6-concave die, 61-product die cavity, 7-first elastic structure, 71-nitrogen spring, 8-convex die, 81-positioning pin, 9-second elastic structure, 91-spring, 92-top column and 921-limiting block.

[ detailed description ] of the utility model

In order to better understand the technical scheme of the present utility model, the following detailed description will refer to the accompanying drawings and specific embodiments.

It should be noted herein that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing these embodiments and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operate in a specific orientation. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature.

Example 1

Referring to fig. 1 to 8, in a preferred embodiment of a thick material fine blanking die 100 of the present utility model, the fine blanking die 100 includes a blanking upper die 1, a blanking lower die 2 matched with the blanking upper die 1, a floating plate 3, an inner stripping block 4 and a top block 5; wherein, the punching upper die 1 can move towards the direction of the punching lower die 2 or move away from the punching lower die 2 under the drive of a driving mechanism (not shown), so as to realize the punching cutting function; the driving mechanism is a mechanism which needs to be arranged in the existing stamping die, the specific structure of the driving mechanism is well known to those skilled in the art, and the driving mechanism is not described in detail herein.

A female die 6 is arranged in the upper stamping die 1, the inner stripping block 4 is movably arranged in the female die 6, the top of the inner stripping block 4 is connected with the upper stamping die 1 through a first elastic structure 7, when the upper stamping die 1 drives the female die 6 to move downwards for stamping, the inner stripping block 4 can move upwards along the female die 6, and when the upper stamping die 1 drives the female die 6 to move upwards for homing, the inner stripping block 4 can return downwards under the action of the first elastic structure 7;

a male die 8 is arranged in the lower stamping die 2, the bottom of the male die 8 is connected with the lower stamping die 2, and a positioning pin 81 for positioning the part is arranged on the male die 8, as shown in fig. 1, as the middle part of the part 100 'is provided with a product positioning hole 200', the positioning pin 81 can be inserted into the product positioning hole 200 'to position the part 100' by arranging the positioning pin 81 on the male die 8; the floating plate 3 is movably sleeved outside the male die 8, the floating plate 3 is connected with the lower stamping die 2 through a second elastic structure 9, the floating plate 3 can float up and down under the action of the second elastic structure 9, in an initial state, the floating plate 3 is positioned above the male die 8, and the positioning pin 81 extends upwards to the upper side of the floating plate 3; the two sides of the bottom of the upper stamping die 1 are respectively provided with the top blocks 5 at positions corresponding to the floating plates 3, so that the top blocks 5 can push the floating plates 3 to move downwards together in the descending process of the upper stamping die 1.

In the preferred embodiment of the present utility model, the stamping upper die 1 comprises an upper die base 11, an upper backing plate 12, a fixing plate 13 and a die plate 14; the upper die holder 11, the upper base plate 12, the first fixing plate 13 and the concave die plate 14 are fixedly connected together from top to bottom in sequence; the female die 6 passes through the female die plate 14, and the upper end of the female die 6 is fixedly connected with the first fixing plate 13; the first elastic structure 7 is arranged in the upper die holder 11 and the upper base plate 12, and the lower end of the first elastic structure 7 passes through the first fixing plate 13 and is connected with the inner stripping block 4; the top block 5 is fixedly arranged at the bottom of the female die plate 14, and the top block 5 is positioned at two sides of the female die 6.

In the preferred embodiment of the present utility model, the lower stamping die 2 includes a lower die holder 21, a lower backing plate 22 and a second fixing plate 23, and the lower die holder 21, the lower backing plate 22 and the second fixing plate 23 are sequentially and fixedly connected together from bottom to top; the male die 8 is mounted in the second fixing plate 23, and the upper end of the male die 8 protrudes above the second fixing plate 23.

In a preferred embodiment of the utility model, the first elastic structure 7 comprises a nitrogen spring 71; the upper end of the nitrogen spring 71 is fixedly connected with the stamping upper die 1, in particular to the upper die holder 11 of the stamping upper die 1, and the lower end of the nitrogen spring 71 is connected with the top of the inner stripping block 4. In particular operation, the force applied to the inner stripping block 4 by the nitrogen spring 71 needs to be greater than the force applied to the floating plate 3 by the second elastic structure 9, so that the inner stripping block 4 can press the material to be punched on the floating plate 3.

In the preferred embodiment of the present utility model, the female die 6 is provided with a product cavity 61 in a penetrating manner, and the inner stripping block 4 is slidably disposed in the product cavity 61 up and down, wherein the shapes of the product cavity 61 and the inner stripping block 4 are matched with the shape of the part, so as to realize fine blanking of the part.

In a preferred embodiment of the utility model, the gap between the inner wall of the die 6 and the outer wall of the punch 8 is 0.4% of the thickness of the material to be punched. Because the thickness of the part 100' shown in fig. 1 is as high as 8mm, the utility model can effectively improve the bright band by designing the gap between the inner wall of the female die 6 and the outer wall of the male die 8 to be about 0.4% of the thickness of the material to be punched, thereby improving the product precision.

Preferably, the gap between the inner wall of the female die 6 and the outer wall of the male die 8 is 0.03mm.

In the preferred embodiment of the present utility model, the inner stripping block 4 extends below the die 6 before punching, so that the inner stripping block 4 can compress the material to be punched first when the punching upper die 1 drives the die 6 to move downward.

In the preferred embodiment of the utility model, the second elastic structure 9 comprises a spring 91 and a top post 92;

an assembling cavity 24 is formed in the stamping lower die 2, and the assembling cavity 24 extends into the lower die holder 21 from the second fixing plate 23; the spring 91 and the top post 92 are mounted in the assembly chamber 24; the upper portion of jack-prop 92 is connected with the float plate 3, stopper 921 has been set firmly at the middle part of jack-prop 92, the upper end of spring 91 supports in stopper 921, the lower extreme of spring 91 supports in the bottom of assembly cavity 24. In practice, a gap needs to be left between the lower end of the top post 92 and the bottom of the assembly chamber 24, so that the floating plate 3 can float up and down.

In the preferred embodiment of the present utility model, in order to enable the floating plate 3 to float up and down smoothly, 4 second elastic structures 9 are disposed around the periphery of the female die 6 between the floating plate 3 and the lower stamping die 2.

In the preferred embodiment of the present utility model, 4 guide posts 15 are disposed at the bottom of the upper stamping die 1 at the outer side of the female die 6, and guide post holes 25 are disposed at the top of the lower stamping die 2 at positions corresponding to each guide post 15, so that the guide posts 15 and the guide post holes 25 cooperate to guide the up-and-down movement of the upper stamping die 1, thereby ensuring that the upper stamping die 1 can accurately perform die assembly with the lower stamping die 2, and improving the quality of the punched product.

In the preferred embodiment of the present utility model, in order to better limit the parts, 2 positioning pins 81 are disposed on the punch 8, and the outer diameter of the positioning pins 81 may be designed to be equal to the aperture of the product positioning hole on the material to be punched.

The working principle of the fine blanking die 100 of the present utility model is as follows:

after the thick material is roughly cut, positioning the roughly cut material to be punched on the floating plate 3, specifically inserting a positioning pin 81 into a product positioning hole of the material to be punched, and enabling the lower surface of the material to be punched to be attached to the upper surface of the floating plate 3;

the upper stamping die 1 is driven to move downwards by the driving mechanism, and in the process of the downward movement of the upper stamping die 1, the top block 5 is firstly contacted with the floating plate 3 and pushes the floating plate 3 to move downwards together; after the top block 5 pushes the floating plate 3 to move downwards for a small distance, the first elastic structure 7 (namely the nitrogen spring 71) drives the inner stripping block 4 to contact with the upper surface of the material to be punched, and the nitrogen spring 71 at the top of the inner stripping block 4 applies a force larger than that of the second elastic structure 9, so that the inner stripping block 4 can press the material to be punched downwards; when the stamping upper die 1 continues to move downwards until the lower surface of the material to be stamped is in contact with the upper surface of the male die 8, the inner stripping block 4 compresses the material to be stamped on the male die 8; along with the continuous downward movement of the stamping upper die 1, the inner stripping block 4 starts to reversely move upwards under the action of the male die 8, and at the same time, the male die 8 starts to upwards cooperate with the female die 6 to cut materials; when the stamping upper die 1 moves downwards to press the floating plate 3 to be above the second fixed plate 23, the male die 8 completes the blanking operation;

after the punch 8 and the die 6 are matched to complete the blanking operation, the driving mechanism drives the punching upper die 1 to move upwards and return, in the process, the inner stripping block 4 pushes down the cut part under the action of the first elastic structure 7 to separate the part from the die 6, and the floating plate 3 floats upwards and returns under the action of the second elastic structure 9, so that the fine punching operation of one part is completed.

In summary, according to the utility model, the inner stripping block 4 and the first elastic structure 7 are arranged in the female die 6 of the upper stamping die 1, the floating plate 3 is movably sleeved outside the male die 8 of the lower stamping die 2, the floating plate 3 is connected with the lower stamping die 2 through the second elastic structure 9, and meanwhile, the positioning pin 81 is arranged on the male die 8; before the punch 8 and the die 6 are matched to punch the material to be punched, the material to be punched can be positioned on the floating plate 3 by utilizing the positioning pin 81, and before the die 8 and the die 6 are matched to punch, the material to be punched can be pressed downwards by the inner stripping block 4, and then the gap design between the inner wall of the die 6 and the outer wall of the punch 8 is combined, so that the part to be punched can be well extruded and limited in the whole punching process, thereby avoiding the generation of tearing belts and fillet belts, effectively improving the brightness of the periphery of the part, and further improving the product precision; meanwhile, compared with the mode of mechanical polishing or chemical polishing, the method can effectively improve the processing efficiency, reduce the processing difficulty and reduce the processing cost.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.

Claims (10)

1. The thick material fine blanking die comprises a blanking upper die and a blanking lower die matched with the blanking upper die; the method is characterized in that: the device also comprises a floating plate, an inner stripping block and a top block;

a female die is arranged in the stamping upper die, the inner stripping block is movably arranged in the female die, and the top of the inner stripping block is connected with the stamping upper die through a first elastic structure;

a male die is arranged in the lower stamping die, the bottom of the male die is connected with the lower stamping die, and a positioning pin used for positioning the part is arranged on the male die; the floating plate is movably sleeved outside the male die and connected with the stamping lower die through a second elastic structure; the top blocks are arranged on two sides of the bottom of the stamping upper die at positions corresponding to the floating plates.

2. A thick stock fine blanking die as claimed in claim 1, wherein: the first elastic structure comprises a nitrogen spring; the upper end of the nitrogen spring is fixedly connected with the stamping upper die, and the lower end of the nitrogen spring is connected with the top of the inner stripping block.

3. A thick stock fine blanking die as claimed in claim 1, wherein: the female die is provided with a product cavity in a penetrating mode, and the inner stripping block can be arranged in the product cavity in an up-and-down sliding mode.

4. A thick stock fine blanking die as claimed in claim 1, wherein: the gap between the inner wall of the female die and the outer wall of the male die is 0.4% of the thickness of the material to be punched.

5. A thick stock fine blanking die as set forth in claim 4, wherein: the gap between the inner wall of the female die and the outer wall of the male die is 0.03mm.

6. A thick stock fine blanking die as claimed in claim 1, wherein: the inner stripping block extends out to the lower part of the female die before stamping.

7. A thick stock fine blanking die as claimed in claim 1, wherein: the second elastic structure comprises a spring and a jack post;

an assembly cavity is formed in the stamping lower die, and the spring and the jacking column are installed in the assembly cavity; the upper portion of jack-prop is connected with the float plate, the stopper has been set firmly at the middle part of jack-prop, the upper end of spring supports in the stopper, the lower extreme of spring supports in the bottom of assembly cavity.

8. A thick stock fine blanking die as claimed in claim 1, wherein: 4 second elastic structures are arranged between the floating plate and the stamping lower die around the female die.

9. A thick stock fine blanking die as claimed in claim 1, wherein: 4 guide posts are arranged at the bottom of the stamping upper die at the outer side of the female die, and guide post holes are formed in the top of the stamping lower die at positions corresponding to the guide posts.

10. A thick stock fine blanking die as claimed in claim 1, wherein: and 2 positioning pin columns are arranged on the male die.