CN210146794U

CN210146794U - Core bending die of dot matrix sandwich structure

Info

Publication number: CN210146794U
Application number: CN201921086029.0U
Authority: CN
Inventors: 贾赟; 曾维兵
Original assignee: Guizhou Institute of Technology
Current assignee: Guizhou Institute of Technology
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-03-17
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses a core bending die of a dot matrix sandwich structure, which comprises an upper die base and a lower die base arranged below the upper die base relatively, wherein the top of the upper die base is provided with a die shank, and the bottom of the upper die base is provided with a bending male die convenient to disassemble and assemble; a bending female die which is convenient to disassemble and assemble is arranged on the lower die base, and a bending groove matched with the bending male die is formed in the bending female die; and a through hole penetrating through the bending female die is formed at the bottom of the bending groove, and an elastic ejector rod is arranged in the through hole. The utility model has simple structure, low cost and convenient operation, can realize the rapid bending and forming of the pyramidal micro-truss structure core by designing the special bending male die and the special bending female die, and simultaneously, the elastic unloading device is matched, thereby effectively improving the production efficiency and the production quality of the core; and the bending male die and the bending female die are configured in various bending angle specifications, so that the application range is wide, and the requirement of mass production of cores is met.

Description

Core bending die of dot matrix sandwich structure

Technical Field

The utility model relates to a dot matrix sandwich structure's core mould of bending belongs to sandwich material preparation technology field, concretely relates to sandwich structure's of specific structure core punching press bending die.

Background

Due to the excellent performance of the micro-truss lattice sandwich structure material, the micro-truss lattice sandwich structure material is widely applied to various fields of aerospace, bridges, buildings and the like. In recent years, various countries have vigorously developed research and manufacture of the material, the material has good designability and can be designed according to different requirements, and the micro-truss core with the three-dimensional pyramid shape has good comprehensive performance, so that the material has wide application prospect.

The core of the existing three-dimensional pyramid-shaped micro-truss is prepared by a stamping bending forming method, a casting method, a metal sintering method, a deposition drawing forming method, a sputtering method and the like. The stamping, bending and forming method is an economical and simple and feasible method, can be used for manufacturing micro truss cores with low relative density, can be used for processing materials with good ductility, such as aluminum alloy, low-carbon steel and the like, and is low in processing cost and simple and effective in processing technology. However, in the stamping, bending and forming process of the three-dimensional pyramid-shaped micro-truss core, no special manufacturing die exists at present, the manufacturing difficulty is greatly increased, and particularly, the machining efficiency and the machining quality are low when the micro-truss cores of different specifications (different thicknesses, bending angles and the like) are machined.

Disclosure of Invention

In view of this, the present invention provides a core bending mold of dot matrix sandwich structure, which can overcome the disadvantages of the prior art.

The utility model aims at realizing through the following technical scheme:

a core bending die of a dot matrix sandwich structure comprises an upper die holder and a lower die holder which is arranged below the upper die holder relatively, wherein a die handle is arranged at the top of the upper die holder, the bottom of the upper die holder is fixedly connected with an installation plate which is convenient to disassemble and assemble, and a bending male die is arranged in the middle of the installation plate; a bending female die convenient to assemble and disassemble is arranged on the lower die base, and a bending groove matched with the bending male die is formed in the bending female die; the bottom of the bending groove is provided with a through hole penetrating through the bending female die, and an elastic ejector rod is arranged in the through hole.

The upper surface of the mounting plate is fixedly connected with an upper base plate, and the upper base plate is used for reducing the pressure on the upper die base in the bending process.

The bottom of the bending female die is fixedly connected with a lower backing plate, and the lower backing plate is used for reducing the pressure on the lower die holder in the bending process.

The upper surface of the bending female die comprises a processing surface in a stepped structure and a material loading and unloading surface slightly lower than the processing surface, the bending groove is formed in the processing surface, and a positioning plate is arranged on one side of the processing surface.

And a guide sleeve-guide pillar structure which is installed in a matched manner is arranged at the bottom of the upper die base and the top of the lower die base.

The bottom end of the bending male die is a conical die head, the bending groove on the bending female die is a conical groove matched with the conical die head, and the conical die head of the bending male die and the conical groove of the bending female die are configured in various bending angle specifications.

Compared with the prior art, the utility model discloses a core bending die with a dot matrix sandwich structure, which comprises an upper die base and a lower die base arranged below the upper die base relatively, wherein the top of the upper die base is provided with a die handle, and the bottom of the upper die base is provided with a bending male die convenient to disassemble and assemble; the lower die base is provided with a bending female die which is convenient to disassemble and assemble, the bending female die is provided with a bending groove matched with the bending male die, during processing, a die shank of the upper die base is fixedly connected to a press machine, a workpiece to be processed is placed on the bending female die, pressure is started to enable the upper die base to move downwards, the bending male die is driven to move downwards, and the workpiece is punched, bent and formed under the pressure action of the press machine; the bottom of the bending groove is provided with a through hole penetrating through the bending female die, an elastic ejector rod is arranged in the through hole, a workpiece after bending forming can be ejected out of the bending female die, and the workpiece is quickly disassembled.

The bending male die and the bending female die are configured in various bending angle specifications, and for pyramidal micro-truss structure cores of different specifications, the pyramidal micro-truss structure cores can be processed by replacing the male die and the female die with different bending angles on the upper die base and the lower die base, so that the mass production is conveniently realized

The utility model has the advantages that: the utility model has simple structure, low cost and convenient operation, can realize the rapid bending and forming of the pyramidal micro-truss structure core by designing the special bending male die and the special bending female die, is matched with the elastic unloading device, is convenient to load and unload materials, and effectively improves the production efficiency and the production quality of the core; and the bending male die and the bending female die are configured in various bending angle specifications, so that the application range is wide, and the requirement of mass production of cores is met.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.

As shown in fig. 1, a core bending die of a dot matrix sandwich structure is used for bending a flat workpiece with a dot matrix hole structure to obtain a core of a pyramid-shaped micro-truss, and comprises an upper die holder 1, wherein the top of the upper die holder is fixedly connected with a die shank 3 through a first screw 4, the bottom of the upper die holder is fixedly connected with an installation plate 8 through a second screw 2 and a limiting pin shaft 5, and the middle part of the installation plate 8 is provided with a bending male die 9; a corresponding lower die holder 10 is arranged below the upper die holder 1, a bending female die 11 is fixedly connected to the lower die holder 10 through a third screw 13, a bending groove matched with the bending male die 9 is formed in the bending female die 11, a through hole penetrating through the bending female die 11 is formed in the bottom of the bending groove, an elastic ejector rod 12 is arranged in the through hole, specifically, an elastic ejector rod mounting hole is formed in the lower die holder 10, the lower end of the elastic ejector rod 12 is fixedly connected in the mounting hole, and the upper end of the elastic ejector rod is sleeved in the through hole of the bending female die 11; the elastic ejector rod 12 is used for discharging operation and can eject the bent workpiece out of the bending female die 11.

The upper surface of the mounting plate 8 is fixedly connected with an upper padding plate 7 through a fourth screw 6, and the upper padding plate 7 is used for reducing the pressure to the upper die base 1 in the bending process.

The bottom of the bending female die 11 is fixedly connected with a lower cushion plate 14 through a fifth screw 16, and the lower cushion plate 14 is used for reducing the pressure on the lower die holder 10 in the bending process.

The upper surface of the bending female die 11 comprises a processing surface 1101 with a stepped structure and a loading and unloading surface 1102 slightly lower than the processing surface 1101, the bending groove is formed in the processing surface 1101, a positioning plate 17 is arranged on one side of the processing surface 1101, and the positioning plate 17 is used for limiting the end part of the workpiece to be bent so as to facilitate bending processing; and the workpiece is loaded and unloaded from above the loading and unloading plane 1102.

And a guide sleeve 18-guide post 15 structure which is installed in a matched mode is arranged at the bottom of the upper die holder 1 and the top of the lower die holder 10 and used for guaranteeing the movement precision between the upper die holder and the lower die holder.

The bottom end of the bending male die 9 is a conical die head, the bending groove on the bending female die 11 is a conical groove matched with the conical die head, the conical die head of the bending male die 9 and the conical groove of the bending female die 11 are configured in various bending angle specifications, and when the pyramidal micro-truss cores with different bending angles need to be bent, the pyramidal micro-truss cores with different bending angles can be quickly replaced by the bending male die 9 and the bending female die 11.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a dot matrix sandwich structure's core mould of bending, it includes upper die base (1) and lower die holder (10) of setting in upper die base (1) below relatively, is equipped with die shank (3) at upper die base (1) top, its characterized in that: the bottom of the upper die holder (1) is fixedly connected with an installation plate (8) which is convenient to disassemble and assemble, and the middle part of the installation plate (8) is provided with a bending male die (9); a bending female die (11) which is convenient to disassemble and assemble is arranged on the lower die holder (10), and a bending groove matched with the bending male die (9) is formed in the bending female die (11); the bottom of the bending groove is provided with a through hole penetrating through the bending female die (11), and an elastic ejector rod (12) is arranged in the through hole.

2. The core bending die of the dot matrix sandwich structure according to claim 1, wherein: the upper surface of the mounting plate (8) is fixedly connected with an upper padding plate (7), and the upper padding plate (7) is used for reducing the pressure to the upper die base (1) in the bending process.

3. The core bending die of the dot matrix sandwich structure according to claim 1, wherein: the bottom of the bending female die (11) is fixedly connected with a lower backing plate (14), and the lower backing plate (14) is used for reducing the pressure on the lower die holder (10) in the bending process.

4. The core bending die of the lattice sandwich structure according to claim 3, wherein: the upper surface of the bending female die (11) comprises a machining surface (1101) with a step structure and a material loading and unloading surface (1102) slightly lower than the machining surface (1101), the bending groove is formed in the machining surface (1101), and a positioning plate (17) is arranged on one side of the machining surface (1101).

5. The core bending die of the dot matrix sandwich structure according to claim 1, wherein: and a guide sleeve (18) -guide post (15) structure which is installed in a matched mode is arranged at the bottom of the upper die holder (1) and the top of the lower die holder (10).

6. The core bending die of the dot matrix sandwich structure according to claim 1, wherein: the bottom end of the bending male die (9) is a conical die head, the bending groove on the bending female die (11) is a conical groove matched with the conical die head, and the conical die head of the bending male die (9) and the conical groove of the bending female die (11) are configured in various bending angle specifications.