CN214022981U

CN214022981U - Hexagonal flange forming die

Info

Publication number: CN214022981U
Application number: CN202022958457.7U
Authority: CN
Inventors: 饶陈伟; 陈国龙; 彭威; 孙浩
Original assignee: SUZHOU SHINING HIGH STRENGTH FASTENER CO Ltd
Current assignee: SUZHOU SHINING HIGH STRENGTH FASTENER CO Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-08-24
Anticipated expiration: 2030-12-11

Abstract

The utility model relates to a hexagonal flange forming die, it includes: the first die for upsetting the extrusion rod part and the head part, the second die for preforming the head part, the third die for forming the hexagonal flange and the fourth die for cutting the outer circle of the hexagonal flange are sequentially arranged and respectively consist of a left die and a right die which are matched with each other, and the blank is processed through the special four-station die, so that the hexagonal flange is finally formed, the blank is hardly cut in the whole process, the raw materials are saved, and the manufacturing cost is reduced; and through the cold heading extrusion forming process, the part has higher mechanical property, the manufacturing precision of the product can be realized, and the product quality is ensured.

Description

Hexagonal flange forming die

Technical Field

The utility model belongs to the technical field of the mould, a forming die of hexagonal flange is related to particularly.

Background

The hexagonal flange is used as a special mechanical part and consists of a hexagonal head and a flange disc, and is widely applied to multiple fields of automobiles, spaceflight, bridges and the like, and the requirements of each field on the strength and the performance are different, so that the processing modes of the hexagonal flange are various, for example, milling and forming are carried out after turning by using a round rod, and each piece of processing needs a turning procedure and a milling procedure, so that in the actual production, the processing speed is low, the production efficiency is low, and the requirement of batch production cannot be met; the machining is also carried out through a multi-station die, but the machining process is complex, the loss of raw materials is serious, and the problems of long production period, easy deformation of parts and low mechanical property exist.

Disclosure of Invention

The utility model aims at providing a hexagonal flange forming die in order to overcome prior art not enough.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a hexagonal flange forming die, it includes: the first die for upsetting the extrusion rod part and the head part, the second die for preforming the head part, the third die for forming the hexagonal flange and the fourth die for cutting the excircle of the hexagonal flange are sequentially arranged, and the first die, the second die, the third die and the fourth die are formed by two left dies and right dies which are matched for use.

The right die of the first die is provided with a die cavity for forming upsetting of the rod part and the head part, the left die of the second die is provided with a die cavity for preforming of the flange head part, the left die of the third die is provided with a hexagonal flange surface forming film, and the left die of the fourth die is provided with a hexagonal flange outer circular cutting film.

The die cavity for forming the stem and head upset is the die cavity for forming the stem and U-shaped head.

Preferably, the head pre-forming mould cavity is a mould cavity for forming a frustum topped with a protrusion.

Preferably, the right die of the second die is provided with a chamfer forming die cavity.

Preferably, the third die right die is provided with a shrinkage cavity, and the length of the shrinkage cavity is 10% -20% of the length of the third die right die.

The preformed piece processed by the first mold, the second mold and the third mold is demolded by the ejector rod, and then can be manually conveyed to a next mold station, or conveyed to a next mold station by the transmission mechanism, and the conveying device can be any one of the prior art, can realize a conveying function, and is not limited herein.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model uses a special four-station mould to process the blank, so that the hexagonal flange is finally formed, the whole process almost does not cut the blank, the raw material is saved, and the manufacturing cost is reduced; and through the cold heading extrusion forming process, the part has higher mechanical property, the manufacturing precision of the product can be realized, and the product quality is ensured.

Drawings

Fig. 1 is a schematic structural view of a first mold and a preformed part formed by the mold;

fig. 2 is a schematic structural view of a second mold and a preformed part formed by the mold;

fig. 3 is a schematic structural view of a third mold and a preformed part formed by the mold;

fig. 4 is a schematic structural view of a fourth mold and a hexagonal flange formed by the fourth mold;

fig. 5 is an enlarged view of the head of the preform after the second mold is used for processing and molding.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

The utility model provides a hexagonal flange forming die, is including being used for the first mould that extrudees pole portion and head mound, is used for the preformed second mould of head, is used for the fashioned third mould of hexagonal flange, and cuts the fourth mould of hexagonal flange excircle.

As shown in fig. 1-4, the first mold, the second mold, the third mold and the fourth mold are sequentially arranged, and each of the first mold, the second mold, the third mold and the fourth mold comprises a left mold (11, 21, 31, 41) and a right mold (12, 22, 32, 42) which are used in cooperation, the left mold 11 of the first mold is provided with a mandril 111 which is used in cooperation with the right mold, the right mold 12 of the first mold is provided with a mold cavity 121 for forming a stem part and a head part with upset, and the end part of the right mold is further provided with a movable mandril 122; the left die 21 of the second die is provided with a die cavity 211 for pre-forming the flange head part, the right die 22 of the second die is provided with a rod part accommodating cavity 221 and a rod part chamfering forming cavity 222, and the end part of the right die 22 is also provided with a movable ejector rod 223; the left die 31 of the third die is provided with a hexagonal flange surface forming film 311, the right die 32 is provided with a rod contracting cavity 321, and the end part of the right die is provided with a movable ejector rod 322; the fourth die left die 41 is provided with an outer circle cutting film 411 for cutting a hexagonal flange, and the right die 42 is provided with a rod accommodating cavity 421 and an ejector rod 422.

And a transmission mechanism (not shown in the figure) is arranged between the two groups of dies, and the preformed piece processed by the first die, the second die and the third die is demoulded by the ejector rod and then is transmitted to the next die station by the transmission mechanism, so that continuous production is realized, and the processing efficiency is improved.

In the using process, the blank is placed into the right die 12 of the first die, the rod part extrusion and head part upsetting processes are carried out, the blank is subjected to primary diameter reduction in the process to form the rod part and the U-shaped head part to obtain the preformed part 10, the preformed part 10 is placed into the second die through the transmission mechanism, the U-shaped head part of the preformed part 10 is deformed into a frustum with a bulge at the top under the action of stamping of the left die 21 of the second die (as shown in figure 5), preparation is made for primary forming of the hexagonal flange surface of the next station, meanwhile, a chamfer is formed at the end part of the rod, far away from the head part, of the rod in the chamfer forming die cavity 222 of the right die of the second die to obtain the preformed part 20, the preformed part 20 is placed into the third die 3, the frustum with the bulge at the top is stamped into the hexagonal flange surface by the left die 31 of the third die, the process of preforming the hexagonal flange surface is omitted, and the process of punching the flange part once is carried out, the strength requirement of the hexagonal flange head is met, the processing steps are saved, the processing efficiency is improved, the product deformation risk caused by multiple punching is effectively avoided, meanwhile, the rod part is subjected to secondary diameter reduction in the rod reducing cavity 321 of the right die 32 of the third die as required to form a reducing rod, the length of the reducing rod manufactured by the die of the embodiment accounts for one eighth of the total length of the rod part, and the preformed part 30 is obtained; finally, the preformed piece 30 is subjected to circle cutting in the left die 41 of the fourth die, so that the hexagonal flange 40 is finally formed, and the circular flange after circle cutting has good roundness and can meet the requirement.

The utility model discloses use special quadruplex position mould to the processing of material blank, obtained the higher hexagonal flange spare that just has the throat of surface finish, the process is simple, and production efficiency is high, and whole course of working does not hardly cut the material blank, and material utilization is high, and the suitability is strong.

It is right above that the utility model provides a hexagonal flange forming die has carried out the detailed introduction, and it is right to use concrete embodiment the utility model discloses a structure and implementation mode have been elucidated, and its aim at lets the personage of familiar with this technique can understand the utility model discloses an according to in order to implement, can not restrict with this the utility model discloses a protection scope. It should be noted that equivalent changes or modifications to those skilled in the art without departing from the principle of the present invention are also within the scope of the present invention.

Claims

1. The utility model provides a hexagonal flange forming die, its characterized in that, includes the first mould of pole portion extrusion and head mound, the second mould of head preforming, the fashioned third mould of hexagonal flange and the fourth mould of cutting the flange excircle, first, second, third, four moulds set gradually, constitute by two left and right moulds that cooperate and use.

2. A hexagonal flange forming die according to claim 1, wherein the right die of the first die is provided with a stem extruding and head upsetting die cavity, the left die of the second die is provided with a head preforming die cavity, the left die of the third die is provided with a hexagonal flange face forming die, and the left die of the fourth die is provided with a flange cutting outer circular die.

3. The hexagonal flange forming die according to claim 2, wherein the rod-extruding and head-upsetting die cavity is a die cavity for forming the rod portion and the U-shaped head portion.

4. A hexagonal flange forming die according to claim 3, wherein the head preforming die cavity is a die cavity for forming a frustum with a protrusion at the top.

5. The hexagonal flange forming die according to any one of claims 1 to 4, wherein the right die of the second die is provided with a chamfer forming die cavity.

6. The hexagonal flange forming die of any one of claims 1-4, wherein the right die of the third die is provided with a cavity for a draw bar.

7. The hexagonal flange forming die of claim 6, wherein the length of the cavity of the shrinkage rod is 10% to 20% of the length of the cavity of the right die of the third die.