CN104525726A - Polyurethane rubber bending die - Google Patents
Polyurethane rubber bending die Download PDFInfo
- Publication number
- CN104525726A CN104525726A CN201410781740.3A CN201410781740A CN104525726A CN 104525726 A CN104525726 A CN 104525726A CN 201410781740 A CN201410781740 A CN 201410781740A CN 104525726 A CN104525726 A CN 104525726A
- Authority
- CN
- China
- Prior art keywords
- rubber
- cushion plate
- billet
- steel cushion
- die body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a polyurethane rubber bending die which comprises a male die body, rubber and a female die body. A rubber pad is arranged on the rubber. A pressure reduction groove is formed in the middle on the top of the rubber downwards. A steel cushion plate is arranged in a pit bottom of the female die body. The upper surface of the steel cushion plate is a curved surface. Steel bars are arranged in the two sides of the steel cushion plate in a cushioned mode. The steel bars are tangent to the top ends of the female die body, a baffle and the rubber. A cavity is formed between the rubber and the steel cushion plate. The curvature radius of the upper surface of the steel cushion plate is equal to the sum of the curvature radius of a rubber forming part and the thickness of the rubber cushion. Due to the fact that the cavity is formed between the rubber and the steel cushion plate, rubber pressure formed during bending forming can be reduced; due to the fact that the steel cushion plate is additionally arranged, and the upper surface of the steel cushion plate is the curved surface, it can be ensured that forming force on the whole curved surface is uniform; due to the fact that the pressure reduction groove is formed in the top of the rubber, side pressure formed during forming can be increased, springback can be eliminated, and the workpiece quality and dimensional accuracy are improved.
Description
Technical field
The present invention relates to mould applications, particularly relate to a kind of polyurethane rubber bending die.
Background technology
Bending process is the needs according to part shape, by mould and forcing press, blank is curved certain angle, the Sheet Metal Forming Technology method of definite shape workpiece, its application is quite extensive, as automobile much carries out cover piece, the tank bracket component of car, handle on motorcycle, foot support, support element on bicycle, handle, little of knocker, clip (iron clamp) etc.
Sheet metal bending is carried out with polyurethane rubber bending die, usually the appearance frame of a steel punch (or die) and an installation polyurethane rubber is only had, structure is simple, highly versatile, low cost of manufacture, bool springback angle and bending radius, than all less time bending in metal die, thus demonstrate many advantages.But when with polyurethane rubber bending die, the forming pressure size of rubber blanket is not easy to regulate on the one hand, and forming pressure skewness, reduces quality and the dimensional accuracy of drip molding on the other hand.
Summary of the invention
The present invention, in order to overcome deficiency of the prior art, provides a kind of polyurethane rubber bending die.
The present invention is achieved through the following technical solutions:
A kind of polyurethane rubber bending die, comprise body of punch, rubber, die body, described rubber is provided with rubber blanket, and the centre position, top of described rubber offers relief groove downwards; Be provided with billet at the bottom of the hole of described die body, the upper surface of described billet is curved surface, is encased inside rod iron in the both sides of billet, and described rod iron is tangent with the top of die body, baffle plate, rubber respectively, forms cavity between described rubber and billet.
As the preferred technical solution of the present invention, the lower end of described body of punch is provided with ribs, and the lower surface of described ribs is arc surface.
As the preferred technical solution of the present invention, described baffle plate is arranged on billet.
As the preferred technical solution of the present invention, the radius of curvature of described billet upper surface equals radius of curvature and the rubber blanket thickness sum of rubber molding part.
Compared with prior art, the invention has the beneficial effects as follows: between rubber of the present invention and billet, form cavity, to reduce rubber pressure during bending forming, by setting up billet, the upper surface of billet is curved surface, can ensure that the plastic force on whole curved surface is uniform, relief groove is offered by the top of rubber, thus increase the lateral pressure in being shaped, be conducive to eliminating resilience, improve quality and the dimensional accuracy of workpiece.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-body of punch; 2-rubber; 3-die body; 4-rubber blanket; 5-relief groove; 6-billet; 7-rod iron; 8-baffle plate; 9-cavity 10-ribs.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is structural representation of the present invention.
Described a kind of polyurethane rubber bending die, comprises body of punch 1, rubber 2, die body 3, and described rubber 2 is provided with rubber blanket 4, and the centre position, top of described rubber 2 offers relief groove 5 downwards; Be provided with billet 6 at the bottom of the hole of described die body 3, the upper surface of described billet 6 is curved surface, and the radius of curvature of described billet 6 upper surface equals radius of curvature and the rubber blanket 4 thickness sum of rubber molding part.Be encased inside rod iron 7 in the both sides of billet 6, described rod iron 7 is tangent with the top of die body 3, baffle plate 8, rubber 2 respectively, and described baffle plate 8 is arranged on billet 6, forms cavity 9 between described rubber 2 and billet 6.Cavity 9 is formed between rubber 2 of the present invention and billet 6, to reduce rubber pressure during bending forming, by setting up billet 6, the upper surface of billet 6 is curved surface, can ensure that the plastic force on whole curved surface is uniform, offer relief groove 5 by the top of rubber 2, thus increase the lateral pressure in being shaped, be conducive to eliminating resilience, improve quality and the dimensional accuracy of workpiece.
The lower end of described body of punch 1 is provided with ribs 10, and improve intensity and the service life of body of punch 1, the lower surface of described ribs 10 is arc surface.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a polyurethane rubber bending die, comprise body of punch (1), rubber (2), die body (3), described rubber (2) is provided with rubber blanket (4), it is characterized in that: the centre position, top of described rubber (2) offers relief groove (5) downwards; Billet (6) is provided with at the bottom of the hole of described die body (3), the upper surface of described billet (6) is curved surface, rod iron (7) is encased inside in the both sides of billet (6), described rod iron (7) is tangent with the top of die body (3), baffle plate (8), rubber (2) respectively, forms cavity (9) between described rubber (2) and billet (6).
2. a kind of polyurethane rubber bending die according to claim 1, is characterized in that: the lower end of described body of punch (1) is provided with ribs (10), and the lower surface of described ribs (10) is arc surface.
3. a kind of polyurethane rubber bending die according to claim 2, is characterized in that: described baffle plate (8) is arranged on billet (6).
4. a kind of polyurethane rubber bending die according to claim 1, is characterized in that: the radius of curvature of described billet (6) upper surface equals radius of curvature and rubber blanket (4) the thickness sum of rubber molding part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781740.3A CN104525726A (en) | 2014-12-16 | 2014-12-16 | Polyurethane rubber bending die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781740.3A CN104525726A (en) | 2014-12-16 | 2014-12-16 | Polyurethane rubber bending die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104525726A true CN104525726A (en) | 2015-04-22 |
Family
ID=52841457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410781740.3A Pending CN104525726A (en) | 2014-12-16 | 2014-12-16 | Polyurethane rubber bending die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104525726A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622764A (en) * | 2018-11-16 | 2019-04-16 | 中国航发西安动力控制科技有限公司 | Toothed lock circle shaping dies and manufacturing process |
| CN113878006A (en) * | 2021-11-18 | 2022-01-04 | 内蒙古第一机械集团股份有限公司 | Forming die and forming method for reinforcing ribs of sheet covering part |
-
2014
- 2014-12-16 CN CN201410781740.3A patent/CN104525726A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622764A (en) * | 2018-11-16 | 2019-04-16 | 中国航发西安动力控制科技有限公司 | Toothed lock circle shaping dies and manufacturing process |
| CN113878006A (en) * | 2021-11-18 | 2022-01-04 | 内蒙古第一机械集团股份有限公司 | Forming die and forming method for reinforcing ribs of sheet covering part |
| CN113878006B (en) * | 2021-11-18 | 2024-04-02 | 内蒙古第一机械集团股份有限公司 | Sheet covering piece reinforcing rib forming die and forming method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |