CN219443077U

CN219443077U - Mould piercing knife

Info

Publication number: CN219443077U
Application number: CN202320271880.0U
Authority: CN
Inventors: 佘家盛; 任效王; 朱春明; 朱胜才
Original assignee: Wuhu Ruihu Haobo Mould Co ltd
Current assignee: Wuhu Ruihu Haobo Mould Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-08-01
Anticipated expiration: 2033-02-21

Abstract

The utility model relates to a die puncturing knife which comprises an upper die, a lower die, an upper cutting edge, a lower cutting edge and a material ejection piece, wherein the upper die consists of a horizontal part and a vertical part positioned on the right side of the horizontal part, the upper cutting edge is arranged at the left lower edge of the vertical part, the lower cutting edge is arranged at the right upper edge of the lower die, the upper cutting edge corresponds to the lower cutting edge in position to form a scissor puncturing knife, the material ejection piece is arranged at the lower part of the left horizontal part of the upper die and comprises a material ejection block, a spring and a limit column, the upper end of the spring is connected to the lower end face of the horizontal part of the upper die, the lower end of the spring is connected to the upper surface of the material ejection block, the center of the material ejection block is provided with a chute structure, and the upper surface of the limit column is connected to the lower end face of the horizontal part of the upper die. The die puncture knife adopts the upper cutting edge and the lower cutting edge which are arranged at the corresponding positions of the upper die and the lower die to form the scissor type puncture knife, so that the generation of material scraps in the puncture process is reduced, the deformation degree of a workpiece is reduced, and the workpiece can be separated from the clamping piece smoothly and conveniently through the arrangement of the ejection piece.

Description

Mould piercing knife

Technical Field

The utility model relates to an automobile die processing device, in particular to a drawing die puncture knife used in an automobile stamping die.

Background

In the process of processing and forming of an automobile die, when the local stress of a material exceeds the plastic deformation limit, a cracking phenomenon can occur, in order to solve the cracking problem of a workpiece, in the actual production process, a puncturing knife is usually required to be additionally arranged at a process part in the middle of the workpiece, the workpiece is actively punctured at a specific position, and the problem of irregular cracking of the workpiece is solved, however, the conventional puncturing knife is usually of a conical blade structure, material scraps are easy to generate in the puncturing process, adverse effects can be caused on the processing and forming of the workpiece when the scraps escape to other parts, and the workpiece is easy to be clamped in an upper die due to the fact that the conical blade punctures the workpiece with larger stress in the process of puncturing the workpiece, and the deformation degree of the workpiece is larger after puncturing.

Application number: CN201720017542.9 discloses a puncture knife for a die, which is arranged on a male die of the die and comprises a puncture knife main body, wherein the puncture knife main body is arranged along the length direction of the male die, one end of the puncture knife main body is provided with a puncture part, the puncture part is in a regular triangle cone structure, an included angle between two adjacent edge lines of the puncture part is 60 degrees, and the puncture part forms 45 degrees with a horizontal plane. The parts can be easily punctured and sheared, and scraps generated in the working process can be timely discharged. In use, for a stamping line, the scrap iron falling problem of the stamping process is the greatest influence on the stamping line, negative pressure is formed in the die cavity due to the relative movement of an upper die and a lower die in the process of the stamping process, scrap iron generated by stamping is sucked into the die cavity to pollute the molded surface in the die, and the die cleaning is performed due to the fact that the production of the die is stopped, so that the surface quality of the stamping part is influenced, the production efficiency is also influenced, the precision of equipment and the die is even influenced, and potential safety hazards are caused.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides the die puncture knife which adopts a shearing puncture mode to reduce the generation of material scraps in the puncture process, and a release assembly is added in an upper die to enable a punctured workpiece to be easy to release in the puncture mode.

The technical scheme for solving the technical problems is as follows: the utility model provides a mould puncture sword, including the cope match-die, the bed die, the last blade, the bed die, the lower blade, the liftout piece, the cope match-die comprises horizontal portion and the vertical portion that is located horizontal portion right side, the left lower limb of vertical portion sets up the upper blade, the upper right upper limb of bed die sets up the lower blade, the upper blade corresponds with the lower blade position, constitute scissors formula puncture sword, the liftout piece sets up the lower part at the left horizontal portion of cope match-die, the liftout piece includes the liftout piece, a spring, spacing post, the spring upper end is connected in the lower terminal surface of last mould horizontal portion, the bullet lower extreme is connected in liftout piece upper surface, liftout piece center sets up the spout structure, spacing post upper surface is connected in the lower terminal surface of last mould horizontal portion, spacing post sliding connection is in the spout of liftout piece.

Specifically, the springs are arranged in two, so that a stable buffering effect is achieved.

Specifically, the lower bottom of the top material block is of a hollow structure and is used for accommodating the limiting block.

As the preference, the lower terminal surface fixed connection stopper of spacing post, stopper diameter are greater than the spout internal diameter, and the stopper is located the hollow structure of top material piece, and the setting of stopper can restrict the decurrent travel distance of top material piece, also prevents that spacing post from deviating from in the spout.

The beneficial effects of the utility model are as follows: the die puncture knife adopts the upper cutting edge and the lower cutting edge which are arranged at the corresponding positions of the upper die and the lower die to form the scissors type puncture knife, so that the generation of material scraps in the puncture process is reduced, the deformation degree of a workpiece is reduced, the workpiece can be smoothly and conveniently separated through the arrangement of the ejection part, and the clamping part is prevented.

Drawings

FIG. 1 is a front view of a die lancet of the present utility model;

FIG. 2 is a left side view of the die piercing knife of the present utility model;

FIG. 3 is a schematic diagram of the die-piercing tool construction of the present utility model;

FIG. 4 is a cross-sectional view of a knife ejector of the die of the present utility model.

In the figure: 1. the upper die, the lower die, the upper cutting edge, the lower cutting edge, the ejector component structure, the ejector block, the spring, the limit column, the limit block and the finished product are respectively arranged on the upper die, the lower die, the upper cutting edge, the lower cutting edge, the ejector component structure, the ejector block, the spring and the limit column.

Detailed Description

The terms "upper," "lower," "inner," "outer," "front," "rear," "both ends," "one end," "the other end," and the like in this application are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiment 1, as shown in fig. 1-4, a die piercing knife comprises an upper die 1, a lower die 2, an upper cutting edge 11, a lower cutting edge 21, and a material ejection member structure 3, and is characterized in that: the upper die 1 is composed of a horizontal part and a vertical part positioned on the right side of the horizontal part, an upper cutting edge 11 is arranged at the left lower edge of the vertical part, a lower cutting edge 21 is arranged at the right upper edge of the lower die, the upper cutting edge 11 and the lower cutting edge 21 are in position correspondence to form a scissor type puncturing knife structure, the ejector structure 3 is arranged at the lower part of the left horizontal part of the upper die 1, the ejector structure 3 comprises an ejector block 31, a spring 32 and limiting columns 33, the upper ends of the spring 32 are connected to the lower end face of the horizontal part of the upper die, the lower ends of the spring 32 are connected to the upper surface of the ejector block 31, a chute structure is arranged at the center of the ejector block 31, the upper surface of the limiting columns 33 are connected to the lower end face of the horizontal part of the upper die 1, the limiting columns 33 are in sliding connection with the chute of the ejector block 31, and the spring 32 is arranged in two. The lower bottom of the top block 31 is hollow. The lower end face of the limiting post 33 is fixedly connected with a limiting block 34, the diameter of the limiting block 34 is larger than the inner diameter of the chute, and the limiting block is positioned in the hollow structure of the ejector block 31.

The working process comprises the following steps: the method comprises the steps of placing a workpiece 4 on the upper surface of a lower die 2, pressing the upper die 1, shearing and puncturing the workpiece 4 by the upper cutting edge 11 of the upper die 1 and the lower cutting edge 21 of the lower die 2, pressing the pressing piece 3 downwards along with the pressing of the lower die 1, naturally dropping the sheared part on the right side of the workpiece 4, pressing a material jacking block 31 to the upper side of the workpiece 4 in a compressed state along with a spring 32 in the pressing piece 3 of the upper die 1 after the shearing and puncturing are finished, moving the upper die 1 upwards, and gradually recovering the spring 32 to an initial state, wherein the material jacking block 31 jacks the workpiece 4 so as not to move upwards along with the upper die 1 in the process until the material jacking block is separated from the workpiece 4.

The utility model is described above by way of example with reference to the accompanying drawings

The die puncture knife adopts the upper cutting edge and the lower cutting edge which are arranged at the corresponding positions of the upper die and the lower die to form the scissors type puncture knife, so that the generation of material scraps in the puncture process is reduced, the deformation degree of a workpiece is reduced, the workpiece can be smoothly and conveniently separated through the arrangement of the ejection part, and the clamping part is prevented.

The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

The utility model is not related in part to the same as or can be practiced with the prior art.

Claims

1. The utility model provides a mould puncture sword, includes mould, bed die, goes up the blade, lower blade, liftout spare structure, its characterized in that: the upper die consists of a horizontal part and a vertical part positioned on the right side of the horizontal part, an upper cutting edge is arranged at the left lower edge of the vertical part, a lower cutting edge is arranged at the right upper edge of the lower die, a scissor type puncturing knife structure is formed by corresponding to the position of the upper cutting edge, a material ejection part structure is arranged at the lower part of the left horizontal part of the upper die and comprises a material ejection block, a spring and a limit column, the upper end of the spring is connected to the lower end face of the horizontal part of the upper die, the lower end of the spring is connected to the upper surface of the material ejection block, a chute structure is arranged at the center of the material ejection block, the upper surface of the limit column is connected to the lower end face of the horizontal part of the upper die, and the limit column is slidably connected in a chute of the material ejection block.

2. The die piercing knife of claim 1, wherein: the springs are arranged in two.

3. The die piercing knife of claim 1, wherein: the lower bottom of the top block is of a hollow structure.

4. The die piercing knife of claim 1, wherein: the lower end face of the limiting post is fixedly connected with a limiting block, the diameter of the limiting block is larger than the inner diameter of the sliding groove, and the limiting block is positioned in the hollow structure of the ejector block.