CN207941870U - A kind of novel pre-stretching mold - Google Patents
A kind of novel pre-stretching mold Download PDFInfo
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- CN207941870U CN207941870U CN201820356620.2U CN201820356620U CN207941870U CN 207941870 U CN207941870 U CN 207941870U CN 201820356620 U CN201820356620 U CN 201820356620U CN 207941870 U CN207941870 U CN 207941870U
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- die holder
- insert
- upper die
- punch
- pin
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Abstract
The utility model discloses a kind of novel pre-stretching molds, including lower die holder and upper die holder, the lower die holder surface middle part is equipped with punch-pin, punch-pin is surrounded by retainer insert, retainer insert side is equipped with positioning plate, and the upper die holder is equipped with the material pressing core to match with punch-pin, and material pressing core is mounted on by nitrogen gas spring in the middle part of the bottom surface of upper die holder, material pressing core is surrounded by binder insert, and the profile of binder insert matches with the profile of retainer insert.The utility model can prevent metal blank from deviating, workpiece is avoided to generate wrinkle by the way that positioning plate, retainer insert and binder insert is arranged in molding；It can prevent ejection workpiece from workpiece being caused to scratch when dividing mould by the way that nitrogen gas spring is arranged simultaneously.The utility model is simple in structure, applied widely.
Description
Technical field
The utility model is related to mould applications, more particularly to a kind of novel pre-stretching mold.
Background technology
Prestretching stretching process is one of the preamble technique for metal blank drawing process, and prestretching stretching process is to pass through pre-stretching
Mold is completed.Traditional pre-stretching mold is stretched to metal blank through punch-pin and material pressing core, is existed in use
Problems with：(1) metal blank is easy offset when molding, and workpiece is caused to generate wrinkle；(2) punch-pin and material pressing core are easy when dividing mould
Scratch workpiece.
Invention content
The purpose of this utility model is to provide a kind of novel pre-stretching mold, which can prevent when molding
Only metal blank deviates, and workpiece will not be scratched by dividing when mould.
The purpose of this utility model is achieved through the following technical solutions：
A kind of novel pre-stretching mold, including lower die holder and upper die holder, the lower die holder surface middle part are equipped with punch-pin, punch-pin
It is surrounded by retainer insert, retainer insert side is equipped with positioning plate, and the upper die holder is equipped with the material pressing core to match with punch-pin, pressure
Expect that core is mounted on by nitrogen gas spring in the middle part of the bottom surface of upper die holder, material pressing core is surrounded by binder insert, the profile of binder insert
It matches with the profile of retainer insert.
The lower die holder both sides are equipped with guide post.
The upper die holder both sides are equipped with guide sleeve.
The utility model has the following effects that：
(1) by the way that positioning plate, retainer insert and binder insert is arranged, it can prevent metal blank from deviating in molding, avoid
Workpiece generates wrinkle；
(2) it can prevent ejection workpiece from workpiece being caused to scratch when dividing mould by the way that nitrogen gas spring is arranged；
(3) simple in structure, it is applied widely.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of the utility model lower die holder.
Fig. 3 is the structural schematic diagram of the utility model upper die holder.
It is marked in figure：1, lower die holder；11, punch-pin；12, retainer insert；13, positioning plate；14, guide post；2, upper die holder；21、
Material pressing core；22, nitrogen gas spring；23, binder insert；24, guide sleeve.
Specific implementation mode
Embodiment
As shown in FIG. 1 to 3, novel pre-stretching mold provided in this embodiment, including lower die holder 1 and upper die holder 2, it is described
1 surface middle part of lower die holder is equipped with punch-pin 11, and punch-pin 11 is surrounded by retainer insert 12, and the height of punch-pin 11 is higher than retainer insert 12
Height, 12 side of retainer insert is equipped with positioning plate 13, and the upper die holder 2 is equipped with the material pressing core 21 that matches with punch-pin 11, pressure
Expect that core 21 is mounted on by nitrogen gas spring 22 in the middle part of the bottom surface of upper die holder 2, material pressing core 21 is surrounded by binder insert 23, binder edge
The height of block 23 is less than the height of material pressing core 21, and the profile of binder insert 23 matches with the profile of retainer insert 12.Under described
1 both sides of die holder are equipped with guide post 14, and 2 both sides of the upper die holder are equipped with the guide sleeve 24 coordinated with guide post 14,2 upstream or downstream of upper die holder
When pass through guide post 14 and guide sleeve 24 cooperation positioning.
The application method of the utility model is：
Metal blank is placed on lower die holder 1 first, and is positioned by positioning plate 13, upper die holder 2 is then controlled
Downlink, binder insert 23 is first contacted with metal blank with punch-pin 11 when 2 downlink of upper die holder, and subsequent material pressing core 21 connects with metal blank
It touches, while retainer insert 12 is contacted with metal blank, metal blank is pre-stretched at this time；Then 2 uplink of upper die holder, upper die holder 2
When uplink, nitrogen gas spring 22 is by the groove that the workpiece of pre-stretching ejects material pressing core 21 and binder insert 23 is formed.
The above is only the utility model preferred embodiment, but the scope of protection of the utility model is not limited to
This, any transformation carried out based on technical solution provided by the utility model and inventive concept and replacement should all be covered in this reality
With in novel protection domain.
Claims (3)
1. a kind of novel pre-stretching mold, including lower die holder and upper die holder, it is characterised in that：The lower die holder surface middle part is equipped with
Punch-pin, punch-pin are surrounded by retainer insert, retainer insert side is equipped with positioning plate, and the upper die holder is equipped with to match with punch-pin
Material pressing core, material pressing core are mounted on by nitrogen gas spring in the middle part of the bottom surface of upper die holder, and material pressing core is surrounded by binder insert, binder edge
The profile of block matches with the profile of retainer insert.
2. novel pre-stretching mold according to claim 1, it is characterised in that：The lower die holder both sides are equipped with guide post.
3. novel pre-stretching mold according to claim 1, it is characterised in that：The upper die holder both sides are equipped with guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356620.2U CN207941870U (en) | 2018-03-15 | 2018-03-15 | A kind of novel pre-stretching mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356620.2U CN207941870U (en) | 2018-03-15 | 2018-03-15 | A kind of novel pre-stretching mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207941870U true CN207941870U (en) | 2018-10-09 |
Family
ID=63698053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820356620.2U Active CN207941870U (en) | 2018-03-15 | 2018-03-15 | A kind of novel pre-stretching mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207941870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517725A (en) * | 2020-11-16 | 2021-03-19 | 东风汽车股份有限公司 | Double-acting drawing die for front floor and using method of double-acting drawing die |
-
2018
- 2018-03-15 CN CN201820356620.2U patent/CN207941870U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517725A (en) * | 2020-11-16 | 2021-03-19 | 东风汽车股份有限公司 | Double-acting drawing die for front floor and using method of double-acting drawing die |
| CN112517725B (en) * | 2020-11-16 | 2022-07-29 | 东风汽车股份有限公司 | Front floor double-acting drawing die and using method thereof |
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