CN106424251A - Extruding bending forming mold for metal tube and technique thereof - Google Patents
Extruding bending forming mold for metal tube and technique thereof Download PDFInfo
- Publication number
- CN106424251A CN106424251A CN201611196901.8A CN201611196901A CN106424251A CN 106424251 A CN106424251 A CN 106424251A CN 201611196901 A CN201611196901 A CN 201611196901A CN 106424251 A CN106424251 A CN 106424251A
- Authority
- CN
- China
- Prior art keywords
- metal tube
- forming
- bending
- forming blocks
- bend pipe
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
- B21D7/085—Bending rods, profiles, or tubes by passing between rollers or through a curved die by passing through a curved die
-
- 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 provides an extruding bending forming mold for a metal tube and a technique thereof. The extruding bending forming mold comprises a punch and a base, wherein a first forming block and a second forming block are arranged above the base; the first forming block comprises a vertical block and a horizontal support plate; the second forming block is located on the horizontal support plate and is connected with the vertical block; the second forming block is fixed with the vertical block of the first forming block through a screw or a pin; a bending slot is arranged at a joint of the first forming block and the second forming block; the diameter of the bending slot is 0.1mm more than the diameter of the to-be-processed metal tube. The mold is simple in structure, is low in cost and is easy in assembling; the extruding bending forming effect of the product can be achieved; through a simple forming technique, the shape of the metal tube is more stable than the shape of a bending area of a conventional pipe bending machine; the appearance of the bending area after being subjected to a polishing technique is smoother; the bending deformation of the metal tube is reduced.
Description
Technical field
The present invention relates to a kind of metal tube extruding brake forming mould and its technique.
Background technology
With the development of molding equipment and manufacturing technology, the pipe bending part of complicated shape is particularly scientific and technological in industrial circle
It is more and more frequent that the high industrial circle of content occurs, such as aircraft, ship, the oil transportation of automobile, gas pipeline, chemical industry etc., also
Portion support.Because replacing original wire rod or plastic pipe using bending pipe fitting, durable performance can be improved.With tubing
Commonly used, the requirement also more and more higher of the bending quality to tubing for the people and forming technology of bool, Conventional processing methods
As bending, mostly there are some defects in the bending pipe fitting of the production such as roll bending, as the thinning of lateral wall and rupture, the increasing of medial wall
Thickness, the defect such as wrinkling and distortion of cross section, and the angle of bend of pipe fitting and direction limited it is impossible to enough complexity of once preparing
Curvature of space pipe fitting.
The method generally solving metal tube hardly possible brake forming has：First, use bender by metal tube bending by force；2nd, lead to
Cross mould bending technique and be subject to stress；3rd, more conversion materials, using compression moulded element or other techniques.
The shortcoming that three of the above method exists has：First, bender by metal tube bending can exist bending part be subject to stress larger,
Metal tube bending region size is uncontrollable；2nd, also can there is local pressure in mould bending metal tube stress area, leads to product to be sent out
Raw deformation, so that product has some setbacks in dogleg section Outside Dimensions；3rd, differed relatively using die casting precision more after conversion materials
Greatly, and relatively costly, product strength can phase strain differential.
Public announcement of a patent application CN104550289A discloses a kind of side of extrusion molding curvature of space tubing of many punch
Method, described many punch pressurizing unit is made up of four punch, blank, die and mandrel segment, and extrusion mode is simple.By changing
Controlling flow regime in three dimensions for the blank it is achieved that being spatially steered and bending, forming three-dimensional is empty for the speed of each punch
Interior complicated bend pipe fitting.It is an advantage of the invention that：The pipe bending part uniform wall thickness of preparation and wrinkle resistant, cross section is no abnormal
Become, can turn in three dimensions and bending, form complicated bend pipe fitting.But the swan-neck that the method is formed still exists
Internal layer wrinkle, the defect of outer layer rupture.
Content of the invention
The shortcoming of prior art in view of the above, present invention aim at provide a kind of metal tube to extrude bending and forming die
Tool and its technique, make the shape of metal tube bending area more stable, smooth, and improve metal tube bending deformation quantity.
For achieving the above object and other related purposes, the present invention provides a kind of metal tube to extrude brake forming mould, bag
Include drift, base, the top of described base is provided with forming blocks one and forming blocks two, and described forming blocks one include vertical block and support
Transverse slat, described forming blocks two are located on described support transverse slat and are connected with described vertical block, described forming blocks two and described molding
The vertical block of block one is fixed by screw or pin, and described forming blocks one are provided with bend pipe groove, institute with described forming blocks two junction
State the diameter 0.1mm bigger than the metal pipe diameter that need are processed of bend pipe groove.The diameter of bend pipe groove is bigger than the metal pipe diameter that need are processed
0.1mm is to be obstructed in order to avoid metal tube enters die cavity, and product also has enough gaps in extrusion process and ensures material
During flowing more smooth it is ensured that product appearance because of unbalance stress thus affecting the overall smoothness of metal winding pipe, improve bend pipe
Precision.
Preferably, described bend pipe groove includes entrance, bending section, outlet section, and described entrance and outlet section are positioned at described
The two ends of bending section, described entrance is located at the vertical block of described forming blocks one and the junction of forming blocks two, described bending section
At described support transverse slat with vertical block, the contact surface of forming blocks two, described outlet section is located in described support transverse slat.
Preferably, the end chamfer R of described drift is 4-6mm.
Preferably, the arc radius of described bending section are 12-32mm.
A kind of metal tube extrudes bending molding process, and its step is：
The first step, forming blocks one is fixed it is ensured that the contact of mold forming one and forming blocks two with forming blocks two by screw, pin
There is not gap in face laminating；
Second step, metal tube is put into the entrance of bend pipe groove, by punch press, drift is continuously applied to pressure, and metal bending gradually enters
Enter bending section, metal tube gradually deforms in bending section；
3rd step, when drift extreme sport, forming blocks one and metal tube end thereof contacts, forming blocks two support assists extruding curved
Song, when the continuous flowing of material is up to the outlet section of bend pipe groove, metal tube extrudes brake forming.
Metal tube is put into the entrance of bend pipe groove, drift starts downwards, metal tube stress can gradually setting in motion, in gold
When genus pipe progresses into bending section, constantly metal tube end is extruded by forming blocks one and forming blocks two, rely under drift
Row strength, one end of metal tube constantly bends extruding, and metal tube is progressively changed to bending metals tubulose state by straight tube, thus realizing
Metal tube extrudes bending molding process.
As described above, a kind of metal tube that the present invention provides extrudes brake forming mould and its technique, have following beneficial
Effect：This mould structure is simple, convenience, low cost, easily shelve, easily produce, and can reach product and extrude brake forming, by simple
Moulding process is more stable than conventional bending machine bending region shape, and the region of bending outward appearance after glossing is more suitable
Freely, and improve metal tube bending deformation quantity.The curvature transition of bending pipe fitting is very gentle, bool uniform wall thickness, it is to avoid go out
Now bend internal layer wrinkle, the defect such as outer layer rupture, and the surface quality of curvature of space pipe fitting is good.Due to blank and mould it
Between frictional force and the speed difference between punch make the strong shear plasticity deformation of initiation blank, the internal internal stress of metal tube
Very little, the bending pipe fitting after shaping is basically unchanged shape, and quality is good.
Brief description
Fig. 1 is the schematic diagram that a kind of metal tube extrudes brake forming mould.
Fig. 2 is the schematic diagram of forming blocks one.
Fig. 3 is the structural representation of bend pipe groove.
1 drift, 2 forming blocks one, 21 vertical blocks, 22 support transverse slats, 3 forming blocks two, 4 bend pipe grooves, 5
Screw, 41 entrances, 42 bending sections, 43 outlet sections.
Specific embodiment
Hereinafter embodiments of the present invention are illustrated by particular specific embodiment, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Refer to Fig. 1 to Fig. 3.It should be clear that structure depicted in this specification institute accompanying drawings, ratio, size etc., all only in order to
Content disclosed in cooperation description, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualificationss applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
Whole, under not affecting present invention effect that can be generated by and the purpose that can reach, all should still fall in disclosed skill
In the range of art content obtains and can cover.Meanwhile, in this specification cited as " on ", D score, "left", "right", " middle " and
The term of " one " etc., is merely convenient to understanding of narration, and is not used to limit the enforceable scope of the present invention, its relativeness
It is altered or modified, under no essence change technology contents, when being also considered as the enforceable category of the present invention.
As shown in Figure 1 to Figure 3, the present invention provides a kind of metal tube to extrude brake forming mould, including drift 1, base plate, institute
The top stating base plate is provided with forming blocks 1 and forming blocks 23, and described forming blocks 1 include vertical block 21 and support transverse slat 22, institute
State forming blocks 23 to be located on described support transverse slat 22 and be connected with described vertical block 21, described forming blocks 23 and described forming blocks
One 2 vertical block 21 is fixed by screw 5 and pin, and described forming blocks 1 are provided with bend pipe groove with described forming blocks 23 junction
4, the diameter 0.1mm bigger than the metal pipe diameter that need are processed of described bend pipe groove 4.The metal tube that the diameter of bend pipe groove 4 is processed than need
The big 0.1mm of diameter is to be obstructed in order to avoid metal tube enters die cavity, and product also has enough gaps in extrusion process and protects
Card material flowing when more smooth it is ensured that product appearance because of unbalance stress thus affecting the overall smoothness of metal winding pipe, improve
Bend pipe precision.
In the present embodiment, described bend pipe groove 4 includes entrance 41, bending section 42, outlet section 43, described entrance 41 He
Outlet section 43 is located at the two ends of described bending section 42, and described entrance 41 is located at vertical block 21 and the molding of described forming blocks 1
The junction of block 23, described bending section 42 is located at described support transverse slat 22 and vertical block 21, the contact surface of forming blocks 23, institute
State outlet section 43 to be located in described support transverse slat 22.
In the present embodiment, the end chamfer R of described drift 1 is 4-6mm.
In the present embodiment, the arc radius of described bending section 42 are 12-32mm.
In another enforcement, the end chamfer R that can adopt drift 1 is 5mm, and the maximum radius of the cambered surface of bending section 42 is
30mm, at the minimum of the cambered surface of bending section 42, radius is 14mm.
A kind of metal tube extrudes bending molding process, and its step is：
The first step, forming blocks 1 and forming blocks 23 is fixed it is ensured that mold forming 1 and forming blocks 23 by screw 5, pin
Contact surface laminating there is not gap；
Second step, metal tube is put into the entrance of bend pipe groove 4, is continuously applied to pressure by punch press to drift 1, and metal tube is gradually
Enter bending section, metal tube gradually deforms in bending section 42；
3rd step, when drift 1 extreme sport, forming blocks 1 and metal tube end thereof contacts, forming blocks 23 are supported in die cavity
Assistance extruding bending, when the continuous flowing of material is up to the outlet section of bend pipe groove 4, metal tube extrudes brake forming.
Metal tube is put into the entrance 41 of bend pipe groove 4, drift 1 starts downwards, metal tube stress can gradually setting in motion,
When metal tube progresses into bending section 42, constantly metal tube end is extruded by forming blocks 1 and forming blocks 23, according to
By the descending strength of drift, one end of metal tube constantly bends extruding, and metal tube is progressively changed to bending metals tubulose state by straight tube,
Thus realizing metal tube extruding bending molding process.
Metal tube extruding bending is the process producing again plastotype in deformation process, because metal tube belongs to hollow pipe,
Can there is folding line using during machine bending, in order to ensure uncontrollable public affairs present in the smoothness of metal tube and Forging Process
Difference, the deficiency according to metal tube bending process and have developed using mould extrude bending metals pipe molding technique.Upper mould
Drift constantly push, when metal tube one end stress starts slowly to move, be squeezed end gradually start to deform upon, in molding
Process in which materials fully flows, and metal tube constantly extrudes bending, along the type face outer wall slowly flowing forming of curved slot, directly extrudes
To specified size, this way not only solves the uncontrollable of metal tube bending presence, also reduces early investment cost.
In sum, the present invention provides a kind of metal tube extruding brake forming mould and its technique, this mould structure is simple,
Convenience, low cost, easily shelve, easily produce, product extruding brake forming can be reached, by simple moulding process than conventional bend pipe
Machine bending region shape is more stable, and the region of bending outward appearance after glossing is more smooth, and it is curved to improve metal tube
Bent deflection.The curvature transition of bending pipe fitting is very gentle, bool uniform wall thickness, it is to avoid bending internal layer wrinkle, outer layer
The defects such as rupture, and the surface quality of curvature of space pipe fitting is good.Due to the frictional force between blank and mould and punch
Between speed difference make the strong shear plasticity deformation of initiation blank, the internal internal stress very little of metal tube, the bending after shaping
Pipe fitting is basically unchanged shape, and quality is good.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial
Value.
Above-described embodiment only principle of the illustrative present invention and its effect, not for the restriction present invention.Any ripe
The personage knowing this technology all can carry out modifications and changes without prejudice under the spirit and the scope of the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete with institute under technological thought without departing from disclosed spirit such as
All equivalent modifications becoming or change, must be covered by the claim of the present invention.
Claims (5)
1. a kind of metal tube extruding brake forming mould is it is characterised in that include drift, base, the top of described base is provided with
Forming blocks one and forming blocks two, described forming blocks one include vertical block and support transverse slat, and described forming blocks two are located at described support
It is connected on transverse slat and with described vertical block, described forming blocks two are solid by screw or pin with the vertical block of described forming blocks one
Fixed, described forming blocks one and described forming blocks two junction are provided with bend pipe groove, the metal that the diameter of described bend pipe groove is processed than need
The big 0.1mm of pipe diameter.
2. a kind of metal tube extruding brake forming mould according to claim 1 it is characterised in that：Described bend pipe groove includes
Entrance, bending section, outlet section, described entrance and outlet section are located at the two ends of described bending section, and described entrance is located at institute
State the vertical block of forming blocks one and the junction of forming blocks two, described bending section is located at described support transverse slat and vertical block, molding
At the contact surface of block two, described outlet section is located in described support transverse slat.
3. a kind of metal tube extruding brake forming mould according to claim 1 it is characterised in that：The end face of described drift
Chamfering R is 4-6mm.
4. a kind of metal tube extruding brake forming mould according to claim 1 it is characterised in that：The circle of described bending section
Arc radius are 12-32mm.
5. a kind of metal tube extruding bending molding process is it is characterised in that adopt Claims 1-4 any one claim institute
The mould stated is processed, and its procedure of processing is：
The first step, forming blocks one is fixed it is ensured that the contact of mold forming one and forming blocks two with forming blocks two by screw, pin
There is not gap in face laminating；
Second step, metal tube is put into the entrance of bend pipe groove, by punch press, drift is continuously applied to pressure, and metal bending gradually enters
Enter bending section, metal tube gradually deforms in bending section；
3rd step, when drift extreme sport, forming blocks one and metal tube end thereof contacts, forming blocks two support assists extruding curved
Song, when the continuous flowing of material is up to the outlet section of bend pipe groove, metal tube extrudes brake forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196901.8A CN106424251A (en) | 2016-12-22 | 2016-12-22 | Extruding bending forming mold for metal tube and technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611196901.8A CN106424251A (en) | 2016-12-22 | 2016-12-22 | Extruding bending forming mold for metal tube and technique thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106424251A true CN106424251A (en) | 2017-02-22 |
Family
ID=58215212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611196901.8A Pending CN106424251A (en) | 2016-12-22 | 2016-12-22 | Extruding bending forming mold for metal tube and technique thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106424251A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069368A (en) * | 2019-12-13 | 2020-04-28 | 铜陵有色股份铜冠电工有限公司 | Automatic processing device for copper rod for copper wire packaging and use method thereof |
| CN112775378A (en) * | 2021-01-05 | 2021-05-11 | 中国第一重型机械股份公司 | Die forging forming die and die forging forming method for ultra-large elbow bend |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5950918A (en) * | 1982-09-16 | 1984-03-24 | Japan Steel Eng Kk | Machining method of elbow |
| CN1050834A (en) * | 1990-08-01 | 1991-04-24 | 大连弯头化工机械厂 | Seamless copper pipe bend forming method |
| JP2008173648A (en) * | 2007-01-16 | 2008-07-31 | Sumikin Kiko Kk | Method and apparatus for cold bending pipe, and elbow manufactured by the same method and apparatus |
| CN203245268U (en) * | 2013-04-16 | 2013-10-23 | 衡阳风顺车桥有限公司 | Pushing and pressing pipe-bending mould |
| CN103846324A (en) * | 2012-12-03 | 2014-06-11 | 江苏鑫顺不锈钢制品有限公司 | Fixture device of cold press molding machine for elbows |
| CN204171129U (en) * | 2014-10-13 | 2015-02-25 | 马钢(集团)控股有限公司 | Electric arc furnaces cooling water pipe elbow-making device |
| US20150135789A1 (en) * | 2013-11-14 | 2015-05-21 | Robert Kyle Hughes, JR. | Tube Bending Machine With Reversible Clamp Assembly |
| CN104690121A (en) * | 2015-03-26 | 2015-06-10 | 江苏铁锚玻璃股份有限公司 | System for overcoming warping of curved surface of aluminum profile window frame |
| CN105396916A (en) * | 2015-11-30 | 2016-03-16 | 浙江万盾制冷配件有限公司 | Automatic loading and tube bending machine |
-
2016
- 2016-12-22 CN CN201611196901.8A patent/CN106424251A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5950918A (en) * | 1982-09-16 | 1984-03-24 | Japan Steel Eng Kk | Machining method of elbow |
| CN1050834A (en) * | 1990-08-01 | 1991-04-24 | 大连弯头化工机械厂 | Seamless copper pipe bend forming method |
| JP2008173648A (en) * | 2007-01-16 | 2008-07-31 | Sumikin Kiko Kk | Method and apparatus for cold bending pipe, and elbow manufactured by the same method and apparatus |
| CN103846324A (en) * | 2012-12-03 | 2014-06-11 | 江苏鑫顺不锈钢制品有限公司 | Fixture device of cold press molding machine for elbows |
| CN203245268U (en) * | 2013-04-16 | 2013-10-23 | 衡阳风顺车桥有限公司 | Pushing and pressing pipe-bending mould |
| US20150135789A1 (en) * | 2013-11-14 | 2015-05-21 | Robert Kyle Hughes, JR. | Tube Bending Machine With Reversible Clamp Assembly |
| CN204171129U (en) * | 2014-10-13 | 2015-02-25 | 马钢(集团)控股有限公司 | Electric arc furnaces cooling water pipe elbow-making device |
| CN104690121A (en) * | 2015-03-26 | 2015-06-10 | 江苏铁锚玻璃股份有限公司 | System for overcoming warping of curved surface of aluminum profile window frame |
| CN105396916A (en) * | 2015-11-30 | 2016-03-16 | 浙江万盾制冷配件有限公司 | Automatic loading and tube bending machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069368A (en) * | 2019-12-13 | 2020-04-28 | 铜陵有色股份铜冠电工有限公司 | Automatic processing device for copper rod for copper wire packaging and use method thereof |
| CN112775378A (en) * | 2021-01-05 | 2021-05-11 | 中国第一重型机械股份公司 | Die forging forming die and die forging forming method for ultra-large elbow bend |
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Application publication date: 20170222 |
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