CN110270612A - A kind of core unit for shape bending - Google Patents
A kind of core unit for shape bending Download PDFInfo
- Publication number
- CN110270612A CN110270612A CN201910577394.XA CN201910577394A CN110270612A CN 110270612 A CN110270612 A CN 110270612A CN 201910577394 A CN201910577394 A CN 201910577394A CN 110270612 A CN110270612 A CN 110270612A
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- CN
- China
- Prior art keywords
- chain link
- core
- steel core
- steel
- arc
- 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.)
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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
- B21D9/00—Bending tubes using mandrels or the like
- B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
One kind being used for the curved core unit of opening profile, it includes the identical core model component of multiple structures, each core model component includes steel core, chain link, chain link shaft and backup plate, wherein steel core is block, the side of steel core is fixed on backup plate, the other side of steel core is equipped with side opening groove, and a chain link is equipped in groove, is equipped with chain link shaft in the through-hole of chain link both ends trunnion；Side opening groove upper end top is the convex block for being on one side cambered surface, is connected between each steel core by the hinged chain link shaft of head and the tail, forms a complete core unit.The present invention uses multistage steel core to connect, and than being more convenient with nylon fuse, punching, the service life is longer；The arc of phase-contact surface is consistent when the supporting surface arc of multistage steel core composition is completed with shape extrusion, prevents cross section distortion occur when Steel Bar Bending, is easier to carry out Steel Bar Bending, forming effect is more preferable.
Description
Technical field:
The invention belongs to field of mechanical technique, specially a kind of core unit for shape bending.
Background technique:
There are enclosed shape and opening shape in profile section, and opening shape profile is widely used in building, communications and transportation, machine-building work
The industries such as industry, when opening profile bending forming, since section is open, bending mould can not support outer side edges, at arc on the outside of profile
Shi Rongyi is collapsed, and for the generation for preventing this phenomenon, needs to fill by fuse, to play the role of supporting internal cavity.
Existing fuse has using whole nylon, also has using piecemeal steel core, but punching efficiency or bending forming effect are not to manage very much
Think.
Summary of the invention:
The purpose of the present invention is to provide it is a kind of can be improved punching efficiency and bending forming precision for shape bending
Core unit.
Core unit of the invention includes the identical core model component of multiple structures, each core model component include steel core, chain link,
Chain link shaft and backup plate, wherein steel core is block, and the side of steel core is solid by outer positioning pin and two identical outer-hexagonal bolts
It is scheduled on backup plate, backup plate is cambered surface close to the face of steel core, and it is identical that cambered surface arc with work piece completes the process rear arc；Steel core
The other side be equipped with side opening groove, a chain link is equipped in groove, sets vertical direction through-hole among chain link, it is set in through-hole
Interior positioning pin is placed on steel core in corresponding through-hole, and chain link is positioned, and the horizontal direction of chain link sets through-hole, the bolt in it
Chain link is fixed on steel core, one end of chain link is equipped with single trunnion, and single trunnion is equipped with through-hole, and the other end of chain link is equipped with mutual
Parallel double trunnions set a pair of of coaxial through-hole on double trunnions, chain link shaft are equipped in single doubled via；Side opening groove upper end top
For the convex block for being on one side cambered surface, cambered surface arc completes the process that rear arc is identical with work piece, and adjacent with convex block cambered surface two
Side is inclined-plane, and the angle of cut of the outside elongated surfaces in two inclined-plane is 15 °, the intersection and chain link of convex block cambered surface and adjacent side intersection
Rotating shaft core line is conllinear；It is connected between each steel core by the hinged chain link shaft of head and the tail, forms a complete core unit,
Multistage steel core composition and processed profile be in contact supporting surface arc it is identical as shape bending arc when completing the process.It is each
Chain internode head and the tail should avoid interfering in bending forming process when hinged there are a little gap.
When work, punching first is carried out to processed profile with core unit, makes steel core cambered surface and processed profile lateral surface
It is tangent, then processed profile and core unit are placed on mold.Backup plate one end abuts upper mold, and the backup plate other end abuts lower die.
When processed profile carries out bending forming, processed profile starts to deform, and each steel core of core unit is with processed type
The deformation of material and generate the relative rotation around chain link shaft, until deformation terminate, at this time be processed profile lateral surface and with
Its steel core cambered surface being in contact is bonded completely.
The invention has the following advantages over the prior art:
1, using steel core ratio with nylon fuse be more convenient punching, the service life is longer.
2, it fully considers the positional relationship in Machine Movement Process, avoids being likely to occur in core unit bending forming process
Interference phenomenon.
3, each chain internode is hinged together by pin head and the tail to one complete core unit of composition, and working principle is simple
It is illustrated, and core unit resets conveniently.
4, the arc of phase-contact surface is consistent when the supporting surface arc of multistage steel core cambered surface composition is completed with shape extrusion, not only
Occur cross section distortion when preventing profile from shaping, and be easier to carry out Steel Bar Bending, forming effect is more preferable.
Detailed description of the invention:
Fig. 1 is cross-sectional view of the invention.
Fig. 2 is the main view of single core model component of the invention.
Fig. 3 is the top view of Fig. 2.
Fig. 4 is the rearview of Fig. 2.
Fig. 5 is the hinged simplified schematic diagram of chain link of the present invention.
Fig. 6 is mold when workpiece of the present invention is to be processed, the relative position schematic diagram for being processed profile, core unit.
Fig. 7 is the relative position signal that workpiece of the present invention completes mold when bending forming, is processed profile, core unit
Figure.
In figure: 1. upper molds, 2. lower dies, 3. processed profiles, 4. steel cores, 5. backup plates, 6. outer-hexagonal bolts, 7. chain links, 8.
Chain link shaft, 9. hexagon socket head cap screws, positioning pin, 11. outer positioning pins in 10..
Specific implementation method:
For in the core unit schematic diagram of shape bending, core unit to include multiple knots shown in Fig. 1,2,3,4 and 5
The identical core model component of structure, the steel core 4 of each core model component are block, and the side of steel core is fixed on backup plate by outer positioning pin 11
It on 5, and is fixed on backup plate by two identical outer-hexagonal bolts 6, backup plate is cambered surface, cambered surface arc close to the face of steel core
It is identical that rear arc is completed the process with work piece；The other side of steel core is equipped with side opening groove, is equipped with a chain link 7 in groove,
Set vertical direction through-hole among chain link, set interior positioning pin 10 is placed on steel core in corresponding through-hole in through-hole, and chain link is determined
Position, the horizontal direction of chain link set through-hole, and chain link is fixed on steel core by the hexagon socket head cap screw 9 in it, and one end of chain link is set
There is Dan Zhier, single trunnion is equipped with through-hole, and the other end of chain link is equipped with the double trunnions being parallel to each other, and sets on double trunnions a pair of coaxial
Through-hole, is equipped with chain link shaft 8 in single doubled via, and side opening groove upper end top is the convex block that is on one side cambered surface, cambered surface arc
Complete the process that rear arc is identical with work piece, the two sides adjacent with convex block cambered surface are inclined-plane, the outside extension in two inclined-plane
The angle of cut in face is 15 °, and the intersection of convex block cambered surface and adjacent side intersection is conllinear with chain link rotating shaft core line.Lead between each steel core
Cross the hinged chain link shaft of head and the tail to be connected, form a complete core unit, multistage steel core composition with processed profile phase
The arc for contacting supporting surface is identical as shape bending arc when completing the process.Each chain internode head and the tail should there are between a little when hinged
Gap avoids interfering in bending forming process.
As shown in Figure 6 and Figure 7, when work, punching first is carried out to processed profile 3 with core unit, make steel core cambered surface with
It is tangent to be processed profile lateral surface, then processed profile and core unit are placed on mold.Backup plate one end abuts upper mold 1, leans on
The plate other end abuts lower die 2.When processed profile carry out bending forming when, processed profile starts to deform, core unit it is each
A steel core generates the relative rotation around chain link shaft with the deformation of processed profile, until deformation terminates, is added at this time
The lateral surface of drum material and steel core cambered surface in contact are bonded completely.
Claims (3)
1. a kind of core unit for shape bending, it is characterised in that: it includes the identical core model component of multiple structures, each
Core model component includes steel core, chain link, chain link shaft and backup plate, and wherein steel core is block, and the side of steel core is fixed on backup plate, steel
The other side of core is equipped with side opening groove, and a chain link is equipped in groove, sets vertical direction through-hole among chain link, set in through-hole
Interior positioning pin be placed on steel core in corresponding through-hole, chain link is positioned, the horizontal direction of chain link sets through-hole, the spiral shell in it
Chain link is fixed on steel core by bolt, and one end of chain link is equipped with single trunnion, and single trunnion is equipped with through-hole, and the other end of chain link is equipped with phase
Mutually parallel double trunnions set a pair of of coaxial through-hole on double trunnions, chain link shaft are equipped in single doubled via；Side opening groove upper end
Top is the convex block that is on one side cambered surface, and it is identical that cambered surface arc and work piece complete the process rear arc, adjacent with convex block cambered surface
Two sides are inclined-plane, and the angle of cut of the outside elongated surfaces in two inclined-plane is 15 °, the intersection and chain of convex block cambered surface and adjacent side intersection
Section rotating shaft core line is conllinear, is connected between each steel core by the hinged chain link shaft of head and the tail, and the complete core model of composition one fills
It sets.
2. the core unit according to claim 1 for shape bending, it is characterised in that: each chain internode head and the tail are hinged
When should avoid interfering in bending forming process there are a little gap.
3. the core unit according to claim 1 for shape bending, it is characterised in that: the steel core and be processed
Contact surface, the backup plate front end face of profile are isocentric circular arc end face, the supporting surface that is in contact with processed profile of multistage steel core composition
Arc it is identical as shape bending arc when completing the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577394.XA CN110270612A (en) | 2019-06-28 | 2019-06-28 | A kind of core unit for shape bending |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577394.XA CN110270612A (en) | 2019-06-28 | 2019-06-28 | A kind of core unit for shape bending |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110270612A true CN110270612A (en) | 2019-09-24 |
Family
ID=67962623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910577394.XA Pending CN110270612A (en) | 2019-06-28 | 2019-06-28 | A kind of core unit for shape bending |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110270612A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2451717A (en) * | 1946-06-21 | 1948-10-19 | Sr Frank M Check | Bending ball arbor |
| CN1063062A (en) * | 1992-01-15 | 1992-07-29 | 唐仁伟 | Cold bend pipe with small radius of curvature shaped device and method thereof |
| JP2009113098A (en) * | 2007-11-08 | 2009-05-28 | Comco Corp | Mandrel for bending |
| CN102039336A (en) * | 2010-11-23 | 2011-05-04 | 凌云工业股份有限公司 | Core for arcing and processing of bumper |
| CN201889340U (en) * | 2009-09-29 | 2011-07-06 | 秦皇岛方华埃西姆机械有限公司 | Car door rail corner draw-bending forming device |
| CN206810922U (en) * | 2017-05-31 | 2017-12-29 | 龙工(上海)液压有限公司 | A kind of rectangular tube bend pipe punching frock |
| CN109201806A (en) * | 2018-09-14 | 2019-01-15 | 浙江万丰金马逊科技有限公司 | A kind of rectangular tube bending forming gear chain type plug |
-
2019
- 2019-06-28 CN CN201910577394.XA patent/CN110270612A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2451717A (en) * | 1946-06-21 | 1948-10-19 | Sr Frank M Check | Bending ball arbor |
| CN1063062A (en) * | 1992-01-15 | 1992-07-29 | 唐仁伟 | Cold bend pipe with small radius of curvature shaped device and method thereof |
| JP2009113098A (en) * | 2007-11-08 | 2009-05-28 | Comco Corp | Mandrel for bending |
| CN201889340U (en) * | 2009-09-29 | 2011-07-06 | 秦皇岛方华埃西姆机械有限公司 | Car door rail corner draw-bending forming device |
| CN102039336A (en) * | 2010-11-23 | 2011-05-04 | 凌云工业股份有限公司 | Core for arcing and processing of bumper |
| CN206810922U (en) * | 2017-05-31 | 2017-12-29 | 龙工(上海)液压有限公司 | A kind of rectangular tube bend pipe punching frock |
| CN109201806A (en) * | 2018-09-14 | 2019-01-15 | 浙江万丰金马逊科技有限公司 | A kind of rectangular tube bending forming gear chain type plug |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190924 |
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| WD01 | Invention patent application deemed withdrawn after publication |