CN211331158U

CN211331158U - Heading-back die

Info

Publication number: CN211331158U
Application number: CN201922052575.9U
Authority: CN
Inventors: 陶升平
Original assignee: Kunshan Chenzhongxu Metal Products Co ltd
Current assignee: Sunitec (Kunshan) precision parts Co.,Ltd.
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-08-25
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a back-heading die, which comprises an upper die base and a lower die base which are arranged oppositely; a heading block is arranged in the lower die holder, a guide block is arranged on the heading block, the diameter of the guide block is smaller than that of the heading block, a fixed block is arranged on the outer side of the heading block, and a material pressing position is formed between the fixed block and the heading block; the upper die base is provided with a stripper plate inlet block, one end of the stripper plate inlet block, facing the lower die base, is provided with a pressing material inlet block matched with the stripper plate inlet block and used for clamping a workpiece to be machined, the pressing material inlet block is driven by the upper die base to face the lower die base and move in the pressing material position, and a standard excircle is formed between the pressing material inlet block, the guide inlet block and the return upsetting inlet block in the die closing state. The die is simple in structure and convenient to use, and by using the die, the outer circle of a product is extruded and deformed to be a standard size, the step of machining and turning the outer circle is omitted, and the production efficiency is improved.

Description

Heading-back die

Technical Field

The utility model relates to the field of machining, especially, relate to a back-heading mould.

Background

The excircle surface is the main surface of revolving body parts (shafts, sleeves and discs). The common machining methods for the outer cylindrical surface include turning, grinding and the like. The turning is the most economical and effective processing method for the excircle surface due to the large thickness and the large feed amount of the cutting layer. However, in terms of economic precision, the method is generally suitable for rough machining of the surface of the outer circle, often cannot meet the requirement of the size of a product in terms of precision, and is complex to machine and low in machining efficiency, so that the production cost is increased.

Disclosure of Invention

The utility model aims at providing a upsetting-back mould, this mould simple structure, convenient to use through using this upsetting-back mould, extrudees the excircle of product and warp to standard size, saves the step of machine tooling turning circle, improves production efficiency, has reduced manufacturing cost.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a kind of heading back mould, including upper die base and lower die base set up relatively;

a heading block is arranged in the lower die holder, a guide block is arranged on the heading block, the diameter of the guide block is smaller than that of the heading block, a fixed block is arranged on the outer side of the heading block, and a material pressing position is formed between the fixed block and the heading block;

the upper die base is provided with a stripper plate inlet block, one end of the stripper plate inlet block, facing the lower die base, is provided with a pressing material inlet block matched with the stripper plate inlet block and used for clamping a workpiece to be machined, the pressing material inlet block is driven by the upper die base to face the lower die base and move in the pressing material position, and a standard excircle is formed between the pressing material inlet block, the guide inlet block and the return upsetting inlet block in the die closing state.

In the above technical scheme, in a mold closing state, the upper surface of the guide insert is higher than the upper surface of the pressing insert, and the upsetting insert, the guide insert and the pressing insert respectively abut against the outer circumferential surface of the workpiece to be machined.

In the technical scheme, the upsetting-in block is provided with a groove matched with the groove, the guiding-in block is provided with a convex block, and the convex block is embedded in the groove.

In the technical scheme, the upper end of the guide insert is provided with a guide arc surface.

In the technical scheme, a base plate is further arranged in the lower die base and is arranged at one end, deviating from the guide block, of the heading block.

In the technical scheme, a lower supporting plate is arranged on one side, away from the upper die base, of the lower die base, a lower cushion block is arranged between the lower supporting plate and the lower die base, and a nitrogen spring used for supporting is arranged on the lower cushion block.

In the technical scheme, the lower die holder is further internally provided with an ejection device, the ejection device comprises an ejector rod, one end of the ejector rod acts on the stripper plate inlet block, the other end of the ejector rod is connected with a spring, and the ejector rod drives the stripper plate inlet block to move away from the lower die holder under the action of the spring.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. the utility model discloses in through setting up the return-heading in the die holder, it goes into the piece to be fixed with the direction on the return-heading income piece, and the diameter of direction income piece is less than the diameter of return-heading income piece, it presses the material level to be provided with between piece and the fixed income piece to return-heading, press the size of material level and press material to go into a size to cooperate, make when closing the mould state, press the material to go into the piece and return-heading income piece offset, press the material to go into the piece, return-heading income piece and direction income piece between form a standard excircle, therefore, treat the excircle of machined part when closing the mould state, by the extrusion formation standard excircle, satisfy the dimensional requirement, this mould simple structure, and convenient for operation is convenient for to the processing of product excircle, and the machining efficiency is improved, and the production cost is reduced.

2. The upper end of the guide inlet block is provided with a guide arc surface, so that a workpiece to be machined can be clamped by the stripper inlet block and the pressing inlet block conveniently, and the outer circle of the workpiece can be quickly and accurately sleeved on the guide inlet block.

3. The ejection device is arranged in the lower die base and comprises an ejector rod and a spring, one end of the ejector rod acts on the stripper plate inlet block, the other end of the ejector rod is connected with the spring, the structure is simple, and demolding of a processed product is facilitated under the action of the ejection device.

Drawings

FIG. 1 is a schematic structural view of a heading back die of the present invention;

FIG. 2 is an enlarged view of a partial cross-sectional view of the present invention before heading;

FIG. 3 is an enlarged view of the utility model in partial section after heading;

fig. 4 is a schematic diagram of the structure to be processed in the present invention.

Wherein: 1. an upper die holder; 2. a lower die holder; 3. upsetting back the block; 4. guiding to a block; 5. fixing the block; 6. removing the plate and putting the plate into the block; 7. a workpiece to be processed; 8. pressing materials and feeding into blocks; 9. a bump; 10. a guiding cambered surface; 11. a base plate; 12. a lower supporting plate; 13. a nitrogen spring; 14. a lower cushion block; 15. an ejection device; 16. a top rod; 17. a spring.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

the first embodiment is as follows: referring to fig. 1-4, a heading die comprises an upper die holder 1 and a lower die holder 2 which are arranged oppositely;

a heading block 3 is arranged in the lower die holder 2, a guide block 4 is arranged on the heading block 3, the diameter of the guide block 4 is smaller than that of the heading block 3, a fixed block 5 is arranged on the outer side of the heading block 3, and a material pressing position is formed between the fixed block 5 and the heading block 3;

be provided with on the upper die base 1 and take off board income piece 6 and be provided with towards the one end of die holder 2 with take off board income piece 6 cooperate and be used for the centre gripping to treat that the material 7 presses material income piece 8 press material income piece 8 be in under the drive of upper die base 1 orientation the die holder 2 motion and set up in press in the material level, under the die closing state, press material income piece 8 the direction income piece 4 with form standard excircle between the piece 3 of returning the heading.

In the mold closed state, the upper surface of the guide block 4 is higher than the upper surface of the pressing block 8, and the upsetting block 3, the guide block 4 and the pressing block 8 respectively abut against the outer circumferential surface of the workpiece 7 to be machined.

The bottom of a workpiece 7 to be machined is clamped by the stripper plate inlet block 6 and the pressing inlet block 8, the excircle of the workpiece 7 to be machined faces one side of the lower die seat 2, the stripper plate inlet block 6 and the pressing inlet block 8 clamp the workpiece 7 to be machined to move towards the lower die seat 2 through the movement of the upper die seat 1, the pressing inlet block 8 is inserted into a pressing position, the excircle of the workpiece 7 to be machined is sleeved on the guide inlet block 4, the end face of the workpiece 7 to be machined abuts against the top face of the upsetting inlet block 3, and the circle formed between the upsetting inlet block 3, the guide inlet block 4 and the pressing inlet block 8 is a standard excircle and meets the requirement of machining size. By using the die, the processing of the excircle is simplified, and the processing efficiency is improved.

Referring to fig. 1-3, a groove is formed in the upsetting-in block 3, the upsetting-in block is matched with the groove, a convex block 9 is arranged on the guiding-in block 4, and the convex block 9 is embedded in the groove.

In order to facilitate the clamping of the workpiece 7 to be machined between the plate-removing inlet block 6 and the material-pressing inlet block 8, the outer circle of the workpiece can be quickly and accurately sleeved on the guide inlet block 4, and a guide arc surface 10 is arranged at the upper end of the guide inlet block 4, as shown in fig. 1-3.

Referring to fig. 1, a backing plate 11 is further arranged in the lower die holder 2, and the backing plate 11 is arranged at one end of the upsetting block 3, which is away from the guide block 4.

Referring to fig. 1, a lower supporting plate 12 is arranged on one side of the lower die holder 2 away from the upper die holder 1, a lower cushion block 14 is arranged between the lower supporting plate 12 and the lower die holder 2, and a nitrogen spring 13 for supporting is arranged on the lower cushion block 14.

In order to improve the processing efficiency and facilitate the demolding after the product processing, an ejection device 15 is further arranged in the lower die holder 2, the ejection device 15 comprises an ejector rod 16, one end of the ejector rod 16 acts on the stripper plate entering block 6, the other end of the ejector rod 16 is connected with a spring 17, and the ejector rod 16 drives the stripper plate entering block 6 to deviate from the lower die holder 2 under the action of the spring 17, so that the product demolding is facilitated. As shown in fig. 1.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a heading back mould which characterized in that: comprises an upper die holder and a lower die holder which are arranged oppositely;

2. The heading die of claim 1, wherein: in a closed die state, the upper surface of the guide inlet block is higher than the upper surface of the pressing inlet block, and the upsetting inlet block, the guide inlet block and the pressing inlet block respectively abut against the outer circular surface of the workpiece to be machined.

3. The heading die of claim 1, wherein: the heading insert is provided with a groove, the heading insert is matched with the groove, the guide insert is provided with a convex block, and the convex block is embedded in the groove.

4. The heading die of claim 1, wherein: and a guide arc surface is arranged at the upper end of the guide insert.

5. The heading die of claim 1, wherein: still be provided with the backing plate in the die holder, the backing plate set up in the one end that the piece deviates from is gone into to the return-heading piece the direction.

6. The heading die of claim 5, wherein: and a lower supporting plate is arranged on one side of the lower die base, which is far away from the upper die base, a lower cushion block is arranged between the lower supporting plate and the lower die base, and a nitrogen spring for supporting is arranged on the lower cushion block.

7. The heading die of claim 1, wherein: the lower die base is internally provided with an ejection device, the ejection device comprises an ejector rod, one end of the ejector rod acts on the demoulding plate entering block, the other end of the ejector rod is connected with a spring, and the ejector rod drives the demoulding plate entering block to move away from the lower die base under the action of the spring.