CN213496018U

CN213496018U - Simple circle expanding die

Info

Publication number: CN213496018U
Application number: CN202022244402.XU
Authority: CN
Inventors: 马会民; 陈汉杰
Original assignee: Henan Hongyuan Wheel Co Ltd
Current assignee: Henan Hongyuan Wheel Co Ltd
Priority date: 2020-10-11
Filing date: 2020-10-11
Publication date: 2021-06-22
Anticipated expiration: 2030-10-11

Abstract

The utility model provides a simple circle expanding die, belonging to the technical field of mechanical manufacturing; the simple circle expanding die comprises an upper die assembly, the upper die assembly comprises an upper die plate, the bottom of the upper die plate is provided with a cone, the outer peripheral side of the cone is provided with a plurality of expanding blocks, the expanding blocks are contracted inwards under the action of a tension spring, the bottom of the cone is provided with an end cover, and the expanding blocks are hung on the end cover; the simple circle expanding die further comprises a lower die assembly matched with the upper die assembly, the lower die assembly comprises a base used for supporting the expanding block, and a hole used for the end cover to enter is formed in the base. According to the scheme, the simple circle expanding die is simple in structure, convenient to assemble and replace modules, easy to produce and manufacture, low in input cost and suitable for machining of small-batch workpieces.

Description

Simple circle expanding die

Technical Field

The utility model relates to the technical field of machine-building, especially indicate a simple and easy expand circle mould.

Background

In the process of manufacturing products, a semi-finished product which is cylindrical in the middle process is generally made of steel plate strips through rolling and welding, but the roundness of the semi-finished product cannot meet the subsequent use requirement, and the semi-finished product needs to be expanded by a mold so as to meet the use requirement. The general cylinder expansion die has a complex structure and high cost, and solves the problems of how to improve the roundness of workpieces with small batches and diameters of 250-350 mm and reduce the input cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a simple and easy expand circle mould expands in order to solve current barrel and rises mould structure complicacy, with high costs, to the work piece that little and diameter in batches is between 250mm ~ 350mm, it is low to have the circularity, and the high problem of input cost.

In order to solve the technical problem, the utility model provides a following technical scheme:

a simple circle expanding die comprises an upper die assembly, wherein the upper die assembly comprises an upper die plate, the bottom of the upper die plate is provided with a cone, the outer peripheral side of the cone is provided with a plurality of expanding blocks, the expanding blocks are contracted inwards under the action of a tension spring, the bottom of the cone is provided with an end cover, and the expanding blocks are hung on the end cover; the simple circle expanding die further comprises a lower die assembly matched with the upper die assembly, the lower die assembly comprises a base used for supporting the expanding block, and a hole used for the end cover to enter is formed in the base.

And the inner side surface of the expansion block is attached to the conical surface of the cone.

The top end of the cone is provided with a first cylindrical part, and the first cylindrical part is fixedly connected with the upper template through a first screw.

The bottom surface center of the upper template is provided with a first groove matched with the first cylindrical part, and the first cylindrical part is embedded in the first groove.

The bottom end of the cone is provided with a second cylindrical part, and the second cylindrical part is fixedly connected with the end cover through a second screw.

The center of the top surface of the end cover is provided with a second groove matched with the second cylindrical part, and the second cylindrical part is embedded in the second groove.

Wherein, the outside of expanding the piece is equipped with at least one slot that is used for installing the extension spring.

The number of the expansion blocks is 5-9, and the number of the expansion blocks is odd.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

in the scheme, the simple circle expanding die is simple in structure, convenient to assemble and replace modules, easy to produce and manufacture, low in input cost and suitable for machining of small-batch workpieces.

Drawings

FIG. 1 is a schematic structural view of the simple circle enlarging die of the present invention;

FIG. 2 is a cross-sectional view of the cone of the simple circle enlarging die of the present invention;

FIG. 3 is a top view of the cone of the simple circle enlarging die of the present invention;

fig. 4 is a bottom view of the cone of the simple circle enlarging die of the present invention.

[ reference numerals ]

1. A base;

2. an end cap;

3. a second screw;

4. expanding blocks;

5. a cone;

6. a tension spring;

7. a first screw;

8. and (5) loading the template.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, the embodiment of the utility model provides a simple and easy expand circle mould, including last mould assembly, it includes cope match-plate pattern 8 to go up mould assembly, the bottom of cope match-plate pattern 8 is provided with cone 5, the main aspects of cone 5 up, the tip is down, the periphery side of cone 5 is provided with a plurality of pieces 4 that expand, a plurality of pieces 4 that expand inwards shrink under the effect of extension spring 6, the bottom of cone 5 is provided with end cover 2, a plurality of pieces 4 that expand hang on the end cover 2.

Simple and easy circle mould that expands still include with go up the lower mould component of mould component looks adaptation, lower mould component is including being used for supporting expand block 4's base 1, base 1 is located expand block 4's below, and center department offers and is used for the hole that end cover 2 got into, base 1's bottom size is greater than the top size to reinforcing stability.

The inner side surface of the expansion block 4 is attached to the conical surface of the cone 5, and the expansion block 4 is tightly attached to the cone 5 under the action of the outer tension spring 6.

As shown in fig. 1, a first cylindrical portion is arranged at the top end of the cone 5, the diameter of the first cylindrical portion is equal to the diameter of the large end of the cone 5, and the first cylindrical portion is fixedly connected with the upper template 8 through a first screw 7.

In this embodiment, a first groove adapted to the first cylindrical portion is formed in the center of the bottom surface of the upper mold plate 8, and the first cylindrical portion is embedded in the first groove.

As shown in fig. 1, a second cylindrical portion is provided at the bottom end of the cone 5, the diameter of the second cylindrical portion is smaller than the diameter of the small end of the cone 5, and the second cylindrical portion is fixedly connected to the end cover 2 through a second screw 3.

In this embodiment, a second groove matched with the second cylindrical portion is formed in the center of the top surface of the end cover 2, and the second cylindrical portion is embedded in the second groove.

As shown in fig. 1, at least one groove for installing the tension spring 6 is formed on the outer side of the expansion block 4, and preferably, two grooves are formed.

In this embodiment, the number of the expansion blocks 4 is 5 to 9, and is an odd number, and the expansion blocks 4 are annularly and uniformly distributed on the outer peripheral side of the cone 5.

The utility model provides a simple and easy circle mould working process that expands as follows:

before the die works, a workpiece to be machined is placed on the upper end plane of the base 1, the upper die assembly is moved downwards, the expansion block 4 enters the inner side of the workpiece to be machined, the end cover 2 extends into a hole in the center of the base 1, after the lower end face of the expansion block 4 is contacted with the upper end face of the base 1, the upper die assembly drives the cone 5 to continuously move downwards, and the expansion block 4 expands under the action of the conical surface of the cone 5, so that the roundness of the workpiece meets the requirement.

In the above scheme, simple structure of circle expanding die is convenient for assemble and change the module, easily production preparation, and the input cost is low, is applicable to the processing of small batch volume work piece, has guaranteed the processing circularity moreover, and the practicality is strong.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The simple circle expanding die comprises an upper die assembly and is characterized in that the upper die assembly comprises an upper die plate, the bottom of the upper die plate is provided with a cone, the outer peripheral side of the cone is provided with a plurality of expanding blocks, the expanding blocks are contracted inwards under the action of a tension spring, the bottom of the cone is provided with an end cover, and the expanding blocks are hung on the end cover;

the simple circle expanding die further comprises a lower die assembly matched with the upper die assembly, the lower die assembly comprises a base used for supporting the expanding block, and a hole used for the end cover to enter is formed in the base.

2. The simple circle expanding die of claim 1, wherein the inner side surface of the expanding block is attached to the conical surface of the cone.

3. The simple circle expanding die of claim 2, wherein a first cylindrical portion is arranged at the top end of the cone, and the first cylindrical portion is fixedly connected with the upper die plate through a first screw.

4. The simple circle expanding die of claim 3, wherein a first groove matched with the first cylindrical part is formed in the center of the bottom surface of the upper die plate, and the first cylindrical part is embedded in the first groove.

5. The simple circle expanding die of claim 2, wherein a second cylindrical portion is arranged at the bottom end of the cone, and the second cylindrical portion is fixedly connected with the end cover through a second screw.

6. The simple circle expanding die of claim 5, wherein a second groove matched with the second cylindrical part is formed in the center of the top surface of the end cover, and the second cylindrical part is embedded in the second groove.

7. The simple circle expanding die of claim 1, wherein at least one groove for mounting the tension spring is formed on the outer side of the expanding block.

8. The simple circle expanding die according to claim 1, wherein the number of the expanding blocks is 5-9 and is an odd number.