CN217412143U

CN217412143U - Stamping die assembly

Info

Publication number: CN217412143U
Application number: CN202220236725.0U
Authority: CN
Inventors: 凌其峻; 占闷玉
Original assignee: Foshan Yukai Mould Co ltd
Current assignee: Foshan Yukai Mould Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-09-13
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses a stamping die subassembly, include: the first male die is provided with a first molding surface, the first molding surface is provided with a first bending line, the first molding surface is divided into a left part and a right part along the first bending line, the first bending line forms a first corner, the first male die is further provided with a convex hull, the convex hull is arranged on the first molding surface, and the convex hull is positioned on the inner side of the first corner; and the second die is arranged in the post-process of the first die and comprises a second male die and a second female die, the second male die is provided with a second forming surface, the second forming surface is provided with a second bending line, the shape of the second bending line is matched with that of the first bending line, and the second forming surface is divided into a left part and a right part along the second bending line. The utility model discloses a stamping die subassembly avoids the reentrant corner position of work piece to split, need not through a plurality of stamping processes to improve the production efficiency of work piece. The utility model discloses can be applied to in the stamping die field.

Description

Stamping die assembly

Technical Field

The utility model relates to a stamping die field, in particular to stamping die subassembly.

Background

The stamping die is a special process equipment for processing materials into workpieces in cold stamping processing. For some workpieces with higher bending degree, for example, the workpieces are bent in the horizontal direction again after being bent downwards to form internal corners, the internal corners of the bent workpieces are cracked due to one-time stamping forming of the common die equipment on the plates, so that multiple processes need to be performed on the workpieces with higher bending degree by arranging multiple stamping processes, and the bending degree of the internal corners is gradually increased by the multiple stamping dies according to the sequence of the processes, so that the yield of the bent workpieces is improved. However, the work needs to go through a plurality of stamping processes, which reduces the production efficiency of the work.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stamping die subassembly to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.

The technical scheme adopted for solving the technical problems is as follows:

a stamping die assembly, comprising:

the first male die comprises a first male die and a first female die which are matched with each other, the first male die is provided with a first forming surface, the first forming surface is provided with a first bending line extending along the front-back direction, the first forming surface is divided into a left part and a right part along the first bending line, an obtuse angle is formed between the left part and the right part of the first forming surface, one end of the first bending line deflects towards the left side or the right side to form a first rotating angle, the first male die is further provided with a convex hull, the convex hull is arranged on the first forming surface, and the convex hull is located on the inner side of the first rotating angle;

the second die is arranged at the post-process of the first die and comprises a second male die and a second female die which are matched with each other, the second male die is provided with a second forming surface, the second forming surface is provided with a second bending line extending along the front-back direction, the shape of the second bending line is matched with that of the first bending line, the second forming surface is divided into a left part and a right part along the second bending line, and an obtuse angle is formed between the left part and the right part of the second forming surface.

The utility model has the advantages that: the first die and the second die respectively punch a workpiece in a front-rear process, when the first molding surface of the first male die punches the workpiece, the workpiece is bent downwards along a first bending line, a reentrant corner is formed on the inner side of a first corner of the first bending line, a convex hull is arranged on the inner side of the first corner, and the position of the reentrant corner of the workpiece is bulged and extended by the convex hull; and then, the workpiece is placed into a second die for stamping, the shape of a second bending line is matched with that of the first bending line, the included angle between the left part and the right part of the second forming surface is smaller than that between the left part and the right part of the first forming surface, the second die bends the workpiece by a larger amplitude, the convex part of the internal corner of the workpiece is reversely extruded when the internal corner position of the workpiece is stamped in the second die, the convex part of the internal corner of the workpiece is reversely extruded by the second die after the first die is subjected to the extension deformation of the convex hull, and the convex extended part of the internal corner position is reversely extruded by the second die, so that the deformation quantity required to be extended at the internal corner position of the workpiece is smaller, thereby avoiding the internal corner position of the workpiece from cracking, avoiding multiple stamping processes and improving the production efficiency of the workpiece.

As a further improvement of the above technical solution, the stamping die assembly further includes a third die, the third die is disposed in a preceding step of the first die, the third die includes a third male die and a third female die that are matched with each other, the third male die is provided with a third molding surface, the third molding surface is provided with a third bending line extending in a front-rear direction, a shape of the third bending line matches a shape of the first bending line, the third bending line has a third corner, the third male die is further provided with a convex strip, the convex strip is disposed on the third molding surface, the convex strip is located in an inner side of the third corner, and a length of a left-right direction of the convex strip is greater than a length of a left-right direction of the convex bag.

The third die is arranged in the front process of the first die, the third male die and the third female die are used for punching a workpiece, a third bending line is arranged on a third molding surface of the third male die, the shape of the third bending line is matched with that of the first bending line, the convex strip is arranged on the inner side of a third corner of the third bending line, the length of the left direction and the right direction of the convex strip is greater than that of the left direction and the right direction of the convex packet, the workpiece forms a bulge at the convex strip position, and the bulge extends to the outer edge of the workpiece to reduce the internal stress of the convex position of the workpiece.

As a further improvement of the above technical solution, the third molding surface is divided into a left portion and a right portion along the third bending line, and an included angle between the left portion and the right portion of the third molding surface is larger than an included angle between the left portion and the right portion of the first molding surface.

The included angle between the left part and the right part of the third forming surface is larger than the included angle between the left part and the right part of the first forming surface, the bending amplitude of the workpiece after being stamped by the third die is smaller, the workpiece forms a reentrant corner with smaller bending degree due to the third corner position of the third bending line, the workpiece forms a pre-bending after being stamped by the third die, the reentrant corner with larger bending degree is formed by the first corner position of the first bending line, and the gradual forming of the reentrant corner position is ensured, so that the reentrant corner position of the workpiece is prevented from being cracked and damaged during the stamping of the first die.

As a further improvement of the above technical solution, an included angle between the left and right portions of the second molding surface is smaller than an included angle between the left and right portions of the first molding surface.

The included angle between the left portion and the right portion of the second forming surface is smaller than the included angle between the left portion and the right portion of the first forming surface, the bending amplitude of the workpiece by the first die is smaller, the bending amplitude of the workpiece by the second die is larger, and the second die enables the internal corner position of the workpiece to be formed, so that the bending amplitude of the internal corner position of the workpiece is gradually increased, and the internal corner position of the workpiece is prevented from being cracked and damaged in stamping.

As a further improvement of the technical scheme, the first female die and the first male die are distributed at intervals up and down, and the second male die and the second female die are distributed at intervals up and down.

The bending amplitude of the workpiece is smaller when the first die is used for stamping, so that the workpiece can be stably fixed on the first male die before stamping, the bending amplitude of the workpiece is larger when the second die is used for stamping, and the workpiece is fixed by utilizing the concave cavity of the second female die.

As a further improvement of the above solution, the outer edge of the convex hull and the first molding surface are smoothly transitioned.

The outer edge of the convex hull smoothly transitions with the first molding surface, and damage to the workpiece caused by the outer edge of the convex hull is avoided.

As a further improvement of the above technical solution, the convex hull extends outward from the first corner to an edge of the first molding surface.

The convex hull extends outwards from the first rotating angle to the edge of the first molding surface, so that the convex hull enables the internal corner position of the workpiece to form the edge extending outwards to the workpiece, and the edge of the workpiece is extended and bent in advance, so that the edge position of the workpiece is prevented from being damaged when the workpiece is stamped by the second die.

As a further improvement of the above technical solution, the first male die further includes at least two stoppers, and the two stoppers are disposed on the peripheries of the two side edges of the first corner.

The two stop blocks are arranged on the peripheries of the two side edges of the first corner and used for positioning and supporting the workpiece, so that the workpiece is prevented from sliding when the workpiece is stamped at the first corner position due to the convex hull and the first bending line.

Drawings

The invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a schematic structural view of a first male die in an embodiment of a stamping die assembly provided by the present invention;

fig. 2 is a schematic structural view of a second male die in an embodiment of the stamping die assembly provided by the present invention;

fig. 3 is a schematic structural diagram of a third male die in an embodiment of the stamping die assembly provided by the present invention.

100. The male die comprises a first male die, 110, a first forming surface, 111, a first bending line, 112, a first corner, 120, a convex hull, 130, a stop block, 200, a second male die, 210, a second forming surface, 211, a second bending line, 212, a second corner, 300, a third male die, 310, a third forming surface, 311, a third bending line, 312, a third corner, 320 and a convex strip.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 3, the stamping die assembly of the present invention makes the following embodiments:

the stamping die assembly comprises a first die, a second die and a third die, and the third die, the first die and the second die are sequentially sequenced according to the front and back procedures.

The first mold comprises a first female mold and a first male mold 100 which are distributed up and down, a first molding surface 110 is arranged at the top of the first male mold 100, a first molding cavity is arranged at the bottom of the first female mold, and the first molding surface 110 is matched with the first molding cavity. The first molding surface 110 is provided with a first bending line 111 extending in the front-rear direction, and the front end of the first bending line 111 is deflected to the right such that the first bending line 111 forms a first angle of rotation 112. The first molding surface 110 is divided into left and right portions along a first bending line 111, an obtuse angle is formed between the left and right portions of the first molding surface 110, the first molding surface 110 is provided with a convex hull 120, the convex hull 120 is arranged at the inner side of the first corner 112, the outer edge of the convex hull 120 smoothly transitions with the first molding surface 110, and the convex hull 120 extends from the first corner 112 to the right to the edge of the first molding surface 110. The first male die 100 is provided with a plurality of stoppers 130, and two stoppers 130 are provided at both side peripheries of the first corner 112. The first molding cavity of the first female mold is matched with the first molding surface 110 of the first male mold 100, so that a punching cavity is formed between the first molding surface 110 and the first molding cavity.

The second mold comprises a second male mold 200 and a second female mold which are distributed up and down, a second molding surface 210 is arranged at the bottom of the second male mold 200, a second molding cavity is arranged at the top of the second female mold, and the second molding surface 210 is matched with the second molding cavity. The second molding surface 210 is provided with a second bending line 211 extending in the front-rear direction, and the front end of the second bending line 211 is deflected to the right so that the second bending line 211 forms a second corner 212, and the shape of the second bending line 211 matches the shape of the first bending line 111. The second molding surface 210 is divided into left and right portions along the second bending line 211, an obtuse angle is formed between the left and right portions of the second molding surface 210, and an included angle between the left and right portions of the second molding surface 210 is smaller than that between the left and right portions of the first molding surface 110. The second molding cavity of the second female mold is matched with the second molding surface 210 of the second male mold 200, so that a punching cavity is formed between the second molding surface 210 and the second molding cavity.

The third mold comprises a third female mold and a third male mold 300 which are distributed up and down, a third molding surface 310 is arranged at the top of the third male mold 300, a third molding cavity is arranged at the bottom of the third female mold, and the third molding surface 310 is matched with the third molding cavity. The third molding surface 310 is provided with a third bending line 311 extending along the front-rear direction, the front end of the third bending line 311 deflects towards the right to enable the third bending line 311 to form a third corner 312, and the shape of the third bending line 311 is matched with the shape of the first bending line 111. The third molding surface 310 is divided into left and right portions along a third bending line 311, an obtuse angle is formed between the left and right portions of the third molding surface 310, and an included angle between the left and right portions of the third molding surface 310 is larger than that between the left and right portions of the first molding surface 110. The third molding cavity of the third female die is matched with the third molding surface 310 of the third male die 300, so that a punching cavity is formed between the third molding surface 310 and the third molding cavity.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. A stamping die assembly, characterized in that: the method comprises the following steps:

the first die comprises a first male die (100) and a first female die which are matched with each other, the first male die (100) is provided with a first molding surface (110), the first molding surface (110) is provided with a first bending line (111) extending along the front-back direction, the first molding surface (110) is divided into a left part and a right part along the first bending line (111), an obtuse angle is formed between the left part and the right part of the first molding surface (110), one end of the first bending line (111) deflects towards the left side or the right side to form a first corner (112), the first male die (100) is further provided with a convex hull (120), the convex hull (120) is arranged on the first molding surface (110), and the convex hull (120) is positioned on the inner side of the first corner (112);

and a second mold provided at a post-process of the first mold, the second mold including a second male mold (200) and a second female mold which are engaged with each other, the second male mold (200) having a second molding surface (210), the second molding surface (210) having a second bending line (211) extending in a front-rear direction, the second bending line (211) having a shape matching the shape of the first bending line (111), the second molding surface (210) being divided into left and right portions along the second bending line (211), and the left and right portions of the second molding surface (210) forming an obtuse angle therebetween.

2. The stamping die assembly as recited in claim 1, wherein: the stamping die subassembly still includes the third mould, the third mould is located the preceding process of first mould, the third mould is including third terrace die (300) and the third die of mutually supporting, third terrace die (300) are equipped with third molding surface (310), third molding surface (310) are equipped with third bending line (311) that extend along the fore-and-aft direction, the shape of third bending line (311) with the shape phase-match of first bending line (111), third bending line (311) have third corner (312), third terrace die (300) still are equipped with sand grip (320), sand grip (320) are located on the third molding surface (310), sand grip (320) are located the inboard of third corner (312), the length of direction is greater than about sand grip (320) the length of direction about convex closure (120).

3. The press die assembly as set forth in claim 2, wherein: the third molding surface (310) is divided into a left part and a right part along the third bending line (311), and an included angle between the left part and the right part of the third molding surface (310) is larger than that between the left part and the right part of the first molding surface (110).

4. The stamping die assembly as recited in claim 1, wherein: the included angle between the left and right portions of the second molding surface (210) is smaller than the included angle between the left and right portions of the first molding surface (110).

5. The stamping die assembly as recited in claim 1, wherein: the first female die and the first male die (100) are distributed at intervals up and down, and the second male die (200) and the second female die are distributed at intervals up and down.

6. The stamping die assembly as recited in claim 1, wherein: the outer edge of the convex hull (120) transitions smoothly with the first molding surface (110).

7. The stamping die assembly as recited in claim 1, wherein: the convex hull (120) extends outwardly from the first corner (112) to an edge of the first molding surface (110).

8. The stamping die assembly as recited in claim 1, wherein: the first male die (100) further comprises at least two stop blocks (130), and the two stop blocks (130) are arranged on the peripheries of two side edges of the first corner (112).