CN217550899U - High-precision angle punching structure - Google Patents

Abstract

The utility model discloses a high-precision angle punching structure, which comprises an upper window plate, a lower window plate arranged at the bottom of the upper window plate, a punch component obliquely running through the upper window plate and the lower window, and a punching insert arranged below the lower window plate and corresponding to the die assembly of the lower window plate; the punch assembly comprises a punch and a connecting sleeve sleeved outside the punch in a limiting mode, a limiting groove used for limiting the stroke of the connecting sleeve is formed between the upper window plate and the lower window plate, a crimping surface which is parallel to the surface of the punching insert is arranged at the bottom of the lower window plate, a guide hole which is perpendicular to the surface of the punching insert is formed in the punching insert, and the punch penetrates through the crimping surface perpendicularly and is just matched with the guide hole. The utility model discloses a lower window board terminal surface and the relative parallel arrangement in mold insert surface that punches a hole, the drift run through lower window board perpendicularly and the mold insert that punches a hole and just to the cooperation with the guiding hole, the guiding hole corresponds the precision with the drift compound die height in the mold insert that punches a hole, and the drift is taken out in advance and is taken off die sinking after the material from the guiding hole, improves the hole site precision that punches a hole.

Description

High-precision angle punching structure

Technical Field

The utility model belongs to the technical field of the mould, especially, relate to a high accuracy angle punching structure.

Background

The conventional stamping die needs to perform angle punching operation on a material part, and an angle punch is arranged in the die to realize hole position stamping. The existing patent number is CN201620884819.3 a hot stamping die with angle punching, and discloses that a punch component penetrates through an upper die forming insert, a die case is arranged in a lower die forming insert, when the upper die forming insert and the lower die forming insert are combined, the accurate guiding of a hole site for accommodating a punch in the die case cannot be ensured, and when the die is opened, the upper die forming insert and the punch synchronously separate materials, so that the hole site precision of punching is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving above-mentioned technical problem, and provide high accuracy degree angle structure of punching a hole to realize lower window board terminal surface and the relative parallel arrangement in mold insert surface that punches a hole, the drift runs through lower window board perpendicularly and the mold insert that punches a hole and just to the cooperation with the guiding hole, and the guiding hole corresponds the precision height with the drift compound die in the mold insert that punches a hole, and the drift is taken out in advance from the guiding hole and is taken off material back die sinking, improves the hole site precision that punches a hole. In order to achieve the above purpose, the utility model discloses technical scheme as follows:

the high-precision angle punching structure comprises an upper window plate, a lower window plate arranged at the bottom of the upper window plate, a punch assembly obliquely penetrating through the upper window plate and the lower window, and a punching insert arranged below the lower window plate and corresponding to the lower window plate in die assembly; the punch assembly comprises a punch and a connecting sleeve sleeved outside the punch in a limiting mode, a limiting groove used for limiting the stroke of the connecting sleeve is formed between the upper window plate and the lower window plate, a crimping surface which is parallel to the surface of the punching insert is arranged at the bottom of the lower window plate, a guide hole which is perpendicular to the surface of the punching insert is formed in the punching insert, and the punch penetrates through the crimping surface perpendicularly and is just matched with the guide hole.

Specifically, the top of the upper window plate is sequentially provided with a stripper plate, an upper clamping plate and an upper die holder, and a blind ram extending to the upper part of the upper window plate penetrates through the upper clamping plate and the stripper plate.

Specifically, a driving cavity for accommodating the hidden punching rod is arranged in the upper window plate, and the connecting sleeve is detachably and fixedly arranged at the bottom of the hidden punching rod.

Specifically, the top of adapter sleeve is equipped with the spread groove, the top of drift articulates in the spread groove.

Specifically, the periphery of the connecting sleeve is provided with a convex ring which is in limit fit with the inner end of the limit groove.

Specifically, the punching insert is detachably mounted in the lower template, and mounting holes for connecting the lower template are formed in two sides of the guide hole.

Specifically, the punching insert is arranged to protrude out of the surface of the lower template.

Specifically, the surface of the punching insert is an inclined surface.

Compared with the prior art, the utility model discloses high accuracy angle structure of punching a hole's beneficial effect mainly reflects:

the punching insert protruding out of the lower template is arranged, so that the parallel position setting and adjustment of the surface of the punching insert and the crimping surface of the lower window plate are facilitated, the accuracy of positioning a material part is improved, the material part is ensured to be in the vertical direction of the punch, the punch can be in direct splicing fit with the guide hole, the punching precision of the material part on the inclination angle is improved, and the problem of large hole site tolerance caused by the fact that the punch and the material part are subjected to relative inclined punching is solved; the punch assembly is internally provided with a matching structure of the punch and the connecting sleeve, so that the function of the punch is realized, the function of stripping is realized, after the punching operation is finished, the hole site is extracted in advance, the material around the hole site is stripped again, the die sinking damage of the hole site is reduced, and the precision of the hole site after the die sinking is ensured; the whole die is easy to assemble, a complex processing structure is avoided, the high-precision punching operation can be realized by ensuring the position relation of the punching insert, the lower window plate and the punch, the die assembling cost is low, and the die is easy to maintain.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the punch assembly of the present embodiment;

the figures in the drawings represent:

the device comprises an upper window plate 1, a lower window plate 11, a limiting groove 12, a pressure welding surface 13, a punching insert 2, a guide hole 21, a mounting hole 22, a punch 3, a connecting sleeve 31, a connecting groove 32, a convex ring 33, a stripper plate 4, an upper clamping plate 41, an upper die holder 42, a hidden punch 43, a lower die plate 5 and a lower die holder 51.

Detailed Description

The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some of the embodiments of the present invention, not all of the embodiments.

Example (b):

referring to fig. 1-2, the present embodiment is a high-precision angle punching structure, which includes an upper window plate 1, a lower window plate 11 disposed at the bottom of the upper window plate 1, a punch assembly obliquely penetrating through the upper window plate 1 and the lower window 11, and a punching insert 2 disposed below the lower window plate 11 and matched with the lower window plate; the punch component comprises a punch 3 and a connecting sleeve 31 sleeved outside the punch 3 in a limiting manner, a limiting groove 12 used for limiting the stroke of the connecting sleeve 31 is arranged between the upper window plate 1 and the lower window plate 11, a crimping surface 13 relatively parallel to the surface of the punching insert 2 is arranged at the bottom of the lower window plate 11, a guide hole 21 vertical to the surface of the punching insert 2 is arranged in the punching insert 2, and the punch 3 vertically penetrates through the crimping surface 13 and is just matched with the guide hole 21. The crimping face 13 through lower window board 11 and the relative parallel arrangement in punching insert 2 surface for when locating the material spare between lower window board 11 and the punching insert 2, contain the plate structure to the material spare, the plate structure can keep with punching insert 2's accurate laminating, can realize the angle punching operation of high accuracy with the absolute alignment grafting of guiding hole 21 when drift 3 carries out the punching operation, avoid adopting multiaxis processingequipment to need carry out the process of many times alignment angle and debugging.

The top of the upper window plate 1 is sequentially provided with a stripper plate 4, an upper clamping plate 41 and an upper die seat 42. The upper clamping plate 41 and the stripper plate 4 are internally provided with a blind ram 43 extending to the upper part of the upper window plate 1 in a penetrating manner, a driving cavity for accommodating the blind ram 43 is arranged in the upper window plate 1, the bottom of the blind ram 43 can be detachably fixed with the connecting sleeve 31, the top end of the connecting sleeve 31 is provided with a connecting groove 32, and the top end of the punch 3 is hung in the connecting groove 32. When the blind punch 43 is lifted to drive the connecting sleeve 31 to move in the limiting groove 12, the punch 3 is driven to perform punching operation. The periphery of the connecting sleeve 31 is provided with a convex ring 33 which is in limit fit with the inner end of the limit groove 12 and is used for controlling the stroke range of the punch 3 when the punch is pulled out of the guide hole 21 and is demoulded.

The punching insert 2 is detachably mounted in the lower template 5, mounting holes 22 for connecting the lower template 5 are formed in two sides of the guide hole 21, the mounting holes 22 are locked and fixed through screws, and the punching insert 2 with the matched guide hole 21 can be replaced adaptively according to selection of a material part. The bottom of the lower template 5 is provided with a lower die base 51. The punching insert 2 protrudes out of the surface of the lower template 5, the surface of the punching insert 2 is an inclined surface, and a positioning material piece is clamped between the punching insert 2 and the lower window plate 11. The punching insert 2 protrudes from the lower template 5, so that the operation is convenient when the punching insert is replaced, and meanwhile, the setting that the surface of the punching insert 2 is relatively parallel to the pressure welding surface 13 is easy to realize, and the setting is necessary for ensuring the correct guide of the guide hole 21.

When the embodiment is applied, a plurality of upper window plates 1, lower window plates 11 and punching inserts 2 can be arranged between the stripper plate 4 and the lower template 5 according to the punching requirement, so that batch synchronous punching operation is realized; the material part is placed on the surface of the punching insert 2, punching operation is carried out on the material part at a certain angle position, when the die is closed, the blind punch 43 drives the punch 3 to vertically punch on the material part relatively, and the punch 3 is accurately inserted and matched with the guide hole 21, so that the higher hole site precision of the punch 3 is ensured; when the die is opened, the stripper plate 4 separates the upper window plate 1, the blind punch rod 43 drives the punch component to be drawn away from the guide hole 21, and then the lower window plate 11 and the upper window plate 11 are demolded to separate the material piece, so that the punching operation of the material piece is completed.

In the embodiment, the punching insert 2 protruding out of the lower template 5 is arranged, so that the parallel position setting and adjustment of the surface of the punching insert 2 and the crimping surface 13 of the lower window plate 11 are facilitated, the accuracy of positioning a material part is improved, the material part is ensured to be positioned in the vertical direction of the punch 3, the punch 3 can be in direct splicing fit with the guide hole 21, the punching precision of the material part on the inclination angle is improved, and the problem of large hole site tolerance caused by the fact that the punch 3 and the material part are punched in a relatively inclined manner is solved; the punch assembly is internally provided with a matching structure of the punch 3 and the connecting sleeve 31, so that the function of the punch is realized, the function of stripping is realized, after the punching operation is finished, hole positions are extracted in advance, the material parts around the hole positions are stripped again, the die sinking damage of the hole positions is reduced, and the precision of the hole positions after the die sinking is ensured; the whole die is easy to assemble, a complex processing structure is avoided, high-precision punching operation can be realized by ensuring the position relation of the punching insert 2, the lower window plate 11 and the punch 3, the die assembling cost is low, and the die is easy to maintain.

In the description of the present invention, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the terms "one embodiment," "some embodiments," "specific embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the present invention has been described in connection with the above embodiments, the above description is only for the purpose of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. High accuracy angle structure of punching a hole, its characterized in that: the punching mold comprises an upper window plate, a lower window plate arranged at the bottom of the upper window plate, a punch component obliquely penetrating through the upper window plate and the lower window, and a punching insert arranged below the lower window plate and corresponding to the lower window plate in mold closing; the punch assembly comprises a punch and a connecting sleeve sleeved outside the punch in a limiting mode, a limiting groove used for limiting the stroke of the connecting sleeve is formed between the upper window plate and the lower window plate, a crimping surface which is parallel to the surface of the punching insert is arranged at the bottom of the lower window plate, a guide hole which is perpendicular to the surface of the punching insert is formed in the punching insert, and the punch penetrates through the crimping surface perpendicularly and is just matched with the guide hole.

2. The high-precision angle punching structure according to claim 1, characterized in that: the top of the upper window plate is sequentially provided with a stripper plate, an upper clamping plate and an upper die base, and a blind ram extending to the upper part of the upper window plate penetrates through the upper clamping plate and the stripper plate.

3. The high-precision angle punching structure according to claim 2, characterized in that: the upper window plate is internally provided with a driving cavity for accommodating the hidden punching rod, and the bottom of the hidden punching rod is detachably fixed with the connecting sleeve.

4. The high-precision angle punching structure according to claim 1, characterized in that: the top of adapter sleeve is equipped with the spread groove, the top of drift articulates in the spread groove.

5. The high-precision angle punching structure according to claim 1, characterized in that: and a convex ring which is in limit fit with the inner end of the limit groove is arranged on the periphery of the connecting sleeve.

6. The high-precision angle punching structure according to claim 1, characterized in that: the punching insert is detachably mounted in the lower template, and mounting holes for connecting the lower template are formed in two sides of the guide hole.

7. The high-precision angle punching structure according to claim 1, characterized in that: the punching insert is arranged by protruding out of the surface of the lower template.

8. The high-precision angle punching structure according to claim 1, characterized in that: the surface of the punching insert is an inclined surface.

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