CN216574932U

CN216574932U - Extrusion die reposition of redundant personnel mould structure

Info

Publication number: CN216574932U
Application number: CN202123310298.0U
Authority: CN
Inventors: 李剑; 罗铭强; 易鹏; 李美玉
Original assignee: Guangdong Xingfa Aluminium Jiangxi Co ltd
Current assignee: Guangdong Xingfa Aluminium Jiangxi Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-05-24
Anticipated expiration: 2031-12-27

Abstract

The utility model relates to an extrusion die shunting die structure, wherein the shunting die structure comprises an upper die, a lower die and a die pad which are mutually matched and arranged together, the upper die, the lower die and the die pad are positioned by pins and connected by screws, the upper die comprises a shunting bridge, shunting holes which are divided by the shunting bridge and a die core; the center of the lower die is provided with a die hole, the feeding surface of the lower die is provided with a flow rate control cavity surrounding the die hole, the periphery of the flow rate control cavity is provided with a welding chamber, and the discharging surface of the lower die is provided with a plurality of strength pin holes; the vertical distance between the edge of the strength pin hole and the edge of the die hole is more than 5 mm; the center of the die pad is provided with a central through hole with a geometric shape similar to that of the die hole, and the feeding surface of the die pad is provided with a strength pin matched with the strength pin hole. The foundation the utility model discloses a reposition of redundant personnel mould structure can shorten 71% with former mould preparation cycle, can practice thrift the consumptive material expense of mould simultaneously, reduction in production cost when improving production efficiency.

Description

Extrusion die reposition of redundant personnel mould structure

Technical Field

The utility model relates to an aluminium alloy extrusion die makes the field, especially relates to an extrusion die reposition of redundant personnel mould structure.

Background

In the preparation process of the aluminum profile, extrusion is a general means for forming the aluminum profile, a die is an essential basic tool in the extrusion process, the die needs to be designed and manufactured according to the section structure of a profile product, and the existing extrusion die for the aluminum profile can be basically divided into a plane die and a split die.

The shunting die is mainly applied to the forming of aluminum profiles with complex structures, the shunting die comprises an upper die, a lower die and a die pad, and the conventional shunting die structure usually needs to comprise structures such as shunting holes, die cores, discharge holes, working belts and the like during design. In the conventional processing of the split-flow die, a raw material blank is sawn into specifications with corresponding thickness generally after a corresponding production order is received, the shape of the raw material blank is reserved with 1-1.5mm allowance rough turning, then a split-flow hole, a welding chamber, a pin hole and the like are roughly milled in the corresponding blank, then the blank is subjected to heat treatment, a semi-finished product after the heat treatment is subjected to finish milling of the welding chamber, a die hole is cut in the blank after the finish machining in an on-line mode, then a working belt is etched by adopting electric spark electricity, and finally, the blank is polished and assembled and accepted. The cycle time for this conventional process typically takes about 7 days.

As described above, when the extrusion die is manufactured according to the conventional die design and processing concept, the production steps are complicated, the production period is relatively long, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model provides a technical problem lie in providing an extrusion die reposition of redundant personnel mould structure promptly, breaks the design and the production experience of traditional mould, when guaranteeing the quality and the performance of mould product, reduces the production energy consumption, improves production efficiency.

In order to achieve the above object, the present invention adopts the following technical means.

A shunting die structure of an extrusion die comprises an upper die, a lower die and a die pad which are matched and installed together, wherein the upper die, the lower die and the die pad are positioned by pins and connected through screws; the center of the lower die is provided with a die hole, a flow rate control cavity surrounding the die hole is arranged on the feeding surface of the lower die, a welding chamber communicated with the flow dividing hole is arranged on the periphery of the flow rate control cavity, and a plurality of strength pin holes are arranged on the discharging surface of the lower die; the vertical distance between the edge of the strength pin hole and the edge of the die hole is more than 5 mm; the center of the die pad is provided with a central through hole with a geometric shape similar to that of the die hole, and the feeding surface of the die pad is provided with a strength pin matched with the strength pin hole.

Preferably, each side about the upper and lower of nib is equipped with a strength pinhole at least.

Preferably, the vertical distance between the flow velocity control cavity and the edge of the die hole is 1-10 mm, and the end part of the flow velocity control cavity adopts circular arc transition; the depth of the flow velocity control cavity is 5-8 mm.

Preferably, the thickness of the lower die is 35 mm.

Preferably, the length of the strength pin is 8-12 mm.

The utility model discloses produced technological effect as follows.

1. The extrusion die split-flow die structure of the utility model omits a discharge hole structure in the traditional die, so that the thickness of the lower die can be reduced from 75mm to 35mm, and the steel cost is saved; simultaneously, in order to ensure the use strength of the die, a plurality of strength pins are adopted to strengthen the connection between the lower die and the die pad, the thickness of the die pad can be correspondingly increased, the thickening of the depth of a neutral layer of the die is realized, and the use performance of the die in the extrusion process is ensured.

2. The utility model discloses an extrusion die has saved the work band structure of traditional mould in the reposition of redundant personnel mould structure, changes into and sets up leading flow control chamber on the lower mould and comes the radial regulation velocity of flow, so at the in-process of preparation mould, only need mill out the height in flow control chamber in the finish milling, treat that the wire-electrode cutting out behind the nib can, it is long when having saved the required processing in original electroerosion work area.

3. Adopt the utility model discloses a reposition of redundant personnel mould structure, the preparation cycle of mould can be shortened to 2 days by original 7 days, and mould preparation cycle shortens 71%, is showing improvement production efficiency.

Drawings

FIG. 1: the utility model relates to an extrusion die reposition of redundant personnel mould structure in one embodiment of mould go up the schematic diagram.

Fig. 2 to fig. 3: fig. 1 is a schematic structural view of a lower die in the embodiment.

FIG. 4: fig. 1 is a perspective view of the die pad in the embodiment.

FIG. 5 is a schematic view of: FIG. 1 is a schematic diagram of the positional relationship between strength pin holes and die holes in the embodiment.

FIG. 6: FIG. 1 is a schematic diagram of the relationship between the position of the flow control chamber and the position of the orifice in the embodiment.

Detailed Description

Similar with conventional reposition of redundant personnel mould structure, the utility model discloses extrusion die reposition of redundant personnel mould structure is including mutually supporting last mould, lower mould and the die pad of installing together, goes up mould, lower mould and die pad and fixes a position and pass through bolted connection by the pin, as shown in fig. 1-4, does the utility model relates to an in the embodiment go up the schematic structure of mould 1, lower mould 2 and die pad 3.

As shown in fig. 1, which is a perspective view of the structure of an upper die 1 in the present embodiment, the upper die 1 has 4 shunt bridges 11 and 4 shunt holes 12 divided by the shunt bridges 11 and communicating with the welding chamber of the lower die 2; the bottom of the shunting bridge 11 is provided with a mold core 13 protruding towards the discharging end, and the discharging surface is also provided with a positioning pin and a screw hole which are used for being connected with the lower mold 2.

Two die holes 23 are formed in the center of the lower die 2, wherein fig. 2 is a schematic structural view of a feeding surface 21 (i.e., a surface connected to the upper die 1) of the lower die, and fig. 3 is a schematic structural view of a discharging surface 22 (i.e., a surface connected to the die pad 3) of the lower die. In the embodiment, the feeding surface 21 of the lower die is provided with a flow rate control cavity 24 surrounding the die hole 23 to replace a conventional working belt structure for axially adjusting the flow rate so as to realize radial flow rate adjustment; and a welding chamber 25 communicated with the shunting hole 12 of the upper die is arranged at the periphery of the flow speed control cavity 24. The height of the flow rate control cavity 24 can be set to be 5-8 mm, and the specific height can be determined according to the shape, the size and the distance from the center of the local die hole. The distance between the edge of the flow rate control cavity 24 and the edge of the die hole 23 can be set to be 1-10 mm, as shown in fig. 6, and the specific distance can be determined according to the wall thickness of the die hole and the distance from the center position; preferably, the flow control chamber 24 is in the form of a circular arc transition at each end.

And simultaneously the utility model provides an extrusion die structure has still saved the discharge gate structure of conventional mould, has reduced the thickness of lower mould, and according to the neutral layer theory of material, the bending amplitude of material depends on the degree of depth on neutral layer, in order to guarantee the use intensity of mould, need use reliable connection to assemble flat mould and die cushion together just can realize the thickening of neutral layer degree of depth. The utility model discloses in adopted to add the intensity round pin and strengthened being connected of lower mould and die cushion, guaranteed the intensity of cantilever department to avoid the extrusion in-process to appear sliding of longitudinal section. The position setting of the strength pin hole is required depending on the position of the die hole, and as shown in fig. 5, one strength pin hole 26 is provided on each of the upper, lower, left, and right sides of each die hole 23, and if the cantilever is sufficiently large, the number of strength pins supporting the cantilever should be increased accordingly. The vertical distance between the edge of the strength pin hole 26 and the edge of the die hole 23 needs to be more than 5mm, and as shown in the figure, 4 strength pin holes 26 are arranged on the discharging surface 22 of the lower die 2.

As shown in fig. 4, 2 central through holes 31 having a geometric shape similar to that of the die holes 23 are formed in the center of the die pad 3, and 4 strength pins 32 matching with the strength pin holes 26 are formed on the feeding surface of the die pad 3. Considering the structural strength of the pin, the length of the strength pin is 8-12 mm.

As shown in fig. 3-4, the lower die 2 and the die pad 3 are further provided with screw through holes for connection. In this embodiment, the thickness of lower mould can be reduced to 35mm, effectively practices thrift steel cost.

Corresponding to the utility model discloses extrusion die reposition of redundant personnel mould structure after the improvement, the production efficiency of this mould structure also can obtain improving correspondingly, the following process steps of its preparation will be specifically explained in combination with the reposition of redundant personnel mould structure of above-mentioned embodiment.

A. Providing a finish turning blank for preparing an upper die and a lower die, pre-drilling screw holes and positioning pin holes in the finish turning blank, and pre-quenching the finish turning blank for later use; providing a plurality of spare die pads with different structures, wherein the spare die pads are processed in advance and provided with a central through hole, a screw through hole and a strength pin; B. after receiving a production order, carrying out finish milling on the upper die blank after pretreatment according to the structure of the upper die 1, and processing to obtain a shunting bridge 11, shunting holes 12 and a die core 13; C. according to the structure of the lower die 2, the preprocessed lower die blank is subjected to finish milling to obtain a welding chamber 25, a flow rate control cavity 24 and a strength pin hole 26, and a die pad 3 matched with the lower die 2 is selected from standby die pads; D. performing linear cutting on the lower die blank obtained after finish milling to process a die hole 23; E. the upper die blank and the lower die blank are polished, the strength pin 32 of the die pad 3 is pressed into the strength pin hole 26 of the lower die, and the assembly inspection is performed by a screw.

Wherein, the pre-quenching treatment process in the step A can be as follows: heating the blank to 1030 ℃, preserving heat for 1.5h, and soaking in oil for quenching for 5 min. The finish milling in steps B and C can be carried out with a milling cutter having a rockwell hardness higher than 60 and a milling depth greater than 0.3mm per layer, such as: the tungsten steel integral milling cutter with high toughness and high hardness can mill pre-quenched die steel billets quickly.

Moreover, each die pad can be commonly used on various lower dies, namely each spare die pad can be used for being assembled with various lower dies, so that the upper die and the lower die in the spare die pad are only needed to be prepared again according to the production requirements of part of different dies, and the production period is shortened; meanwhile, the thickness of the lower die can be reduced to 35mm from 75mm conventionally, so that the material consumption of die steel can be remarkably saved, and the production cost can be reduced.

As above, compare in the preparation method of traditional reposition of redundant personnel mould, the utility model discloses a preparation method has saved the course of working, the rough milling link of mould discharge gate and the process in electric erosion work area, so the utility model discloses the total length of preparation method can shorten to 2~3 days, is showing improvement production efficiency.

Claims

1. A shunting die structure of an extrusion die comprises an upper die, a lower die and a die pad which are matched with each other and arranged together, wherein the upper die, the lower die and the die pad are positioned by pins and connected through screws; it is characterized in that the preparation method is characterized in that,

the center of the lower die is provided with a die hole, a flow rate control cavity surrounding the die hole is arranged on the feeding surface of the lower die, a welding chamber communicated with the flow distribution holes is arranged on the periphery of the flow rate control cavity, and a plurality of strength pin holes are arranged on the discharging surface of the lower die; the vertical distance between the edge of the strength pin hole and the edge of the die hole is more than 5 mm;

the center of the die pad is provided with a central through hole with a geometric shape similar to that of the die hole, and the feeding surface of the die pad is provided with a strength pin matched with the strength pin hole.

2. The split die structure of an extrusion die of claim 1, wherein at least one strength pin hole is provided on each of the upper, lower, left, and right sides of the die hole.

3. The extrusion die split-flow die structure of claim 1, wherein the vertical distance between the flow rate control cavity and the edge of the die hole is 1-10 mm, and the end part of the flow rate control cavity adopts circular arc transition; the depth of the flow velocity control cavity is 5-8 mm.

4. The extrusion die manifold structure of claim 1, wherein the lower die has a thickness of 35 mm.

5. The split die structure of an extrusion die of claim 4, wherein the strength pin has a length of 8 to 12 mm.