CN108097762B - One kind having the adjustable flexible plug of new structural diameter - Google Patents
One kind having the adjustable flexible plug of new structural diameter Download PDFInfo
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- CN108097762B CN108097762B CN201810051034.1A CN201810051034A CN108097762B CN 108097762 B CN108097762 B CN 108097762B CN 201810051034 A CN201810051034 A CN 201810051034A CN 108097762 B CN108097762 B CN 108097762B
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- Prior art keywords
- plug
- section
- plug section
- inner sleeve
- externally embedded
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Classifications
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- 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
- B21D9/03—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length and built-up from loose elements, e.g. series of balls
Abstract
The invention discloses one kind to have the adjustable flexible plug of new structural diameter.More piece inner sleeve plug section constitutes complete flexible plug to concatenation by elastic rubber mandrel；Elastic rubber stick is arranged in the through-hole on inner sleeve plug section and concatenates the inner sleeve plug section elasticity of more piece plug section；It is externally embedded to plug and saves the mutually nested single-unit plug section integral in inner sleeve plug section shape, more piece plug section constitutes complete flexible plug to concatenation by elastic rubber mandrel；Elastic rubber stick is arranged in the through-hole that inner sleeve plug is saved/is externally embedded on plug section and carries out elastic concatenation.The configuration of the present invention is simple easy processing, and easily assembly；And the plug section that can to form diameter by inner sleeve plug section and the mutually nested connection being externally embedded between plug section different, the adjustable function of diameter of realizing flexible plug, is applicable to the bending pipe fitting of different tube diameters, has flexible adjustability, material can be saved, cost is reduced.
Description
Technical field
The present invention relates to thin-wall metal pipe bending forming technical fields, have more particularly, to one kind new structural straight
The adjustable flexible plug of diameter.
Background technique
As numerical controlled bending of pipe technology is widely used in the multiple fields such as air-conditioning, automobile, aviation, ship, bend pipe is sent out in industry
Occupy increasingly consequence in exhibition, therefore the quality of bend pipe and performance will directly affect the reasonable structure of industrial products,
Safety and reliability.
It will appear many defects in pipe fitting bending forming process, mainly have bending section material outside tension wall thickness reduction even
Drawing crack, the increase corrugation of inside compression wall thickness, the rebound and cross section fasciation of pipe fitting.Filling sand is the biography for solving the problems, such as pipe fitting distortion
System method, the design and application of present plug reasonably solve the subproblem occurred in bending forming.During thin-wall tube is bent
The main function of plug is to prevent the excessive fasciation in bending section cross section, and the use of plug also can springback angle to pipe fitting, bending
Section outboard sidewalls thickness has an impact.Plug is the important composition component of numerical control bending forming technique, and the design of plug is to pipe fitting matter
Amount has a major impact.
Core bend pipe is one of the process of cold conditions bend pipe, reasonably selects plug, grasps its correct application method
It is very necessary.Currently, used in pipe fitting bending forming process cross plug form be also it is diversified, for having
The pipe fitting of different relative bending radius or relative wall thickness, and to the difference of processing request, plug of different shapes should be selected.One
As in the case of plug can be divided into two major classes: one kind is rigid plug, and one kind is soft mandrel.Rigid plug such as plunger type core
Stick, arc form plug, cylinder bulb plug etc..Soft mandrel such as chain type plug, flexible axle plug, ball-and-socket joint plug etc..Its
In, the manufacture of plunger type plug is easy, and applicability is big but anti-cross section distortion effect is poor, and it is not high to be generally used for bending required precision
Occasion；The manufacture of arc form plug is easy, and compared to plunger type plug, its support force is big, can improve the part at plug point of contact
It swells, plays the role of transitions smooth at bending initial point, and arc form plug can be put in forward, reduce between tube wall
The effect of gap, anti-cross section distortion is got well than plunger type plug, has certain crease resistant functions, but arc form plug is suitable for small straight
The bending of diameter pipe；Single ball-type plug can be produced in the point of contact front of tube bending than arc form plug
Raw bigger support force；Multi-ball type ball-and-socket plug can be bent in many ways, be that spherical surface is hinged between each ball-joint, adapted to
Various modifications, suitable for single, the multiple and complex bend of thin-wall tube, but its shape and structure is complex, while selecting ball-and-socket
Save plug will also consider to select different ball-joint numbers according to different relative bending radius, opposite pipe thickness and bending angle,
If ball-joint number is very little, fall flat, ball-joint number is too many, then manufactures difficulty and be not easy to penetrate pipe fitting.
In conclusion in the bending forming of metal tube especially thin-wall tube, bending section material outside tension wall thickness reduction
Even drawing crack, the increase corrugation of inside compression wall thickness, the rebound of pipe fitting and cross section fasciation are always that production practices are difficult in the process
The technical problem effectively solved, for the pipe fitting for bending high quality, reasonably selects core in using the clod wash technology for having chip bending
The form of stick is also a very crucial link.
Summary of the invention
A kind of with the adjustable flexible plug of new structural diameter the purpose of the present invention is designing, structure is simple, makes
It makes assembly to be easy, diameter is adjustable, this plug is suitable for the pipe fitting bending forming of different tube diameters.
The technical solution adopted by the present invention is that:
One, the first is with the adjustable flexible plug of new structural diameter:
Including inner sleeve plug section, elastic rubber stick；More piece inner sleeve plug section passes through elastic rubber mandrel to concatenation structure
At the flexible plug of minimum diameter in complete diameter adjustable extent；It is provided on inner sleeve plug section in more piece plug section logical
Hole, elastic rubber stick are arranged in the through-hole on inner sleeve plug section and concatenate the inner sleeve plug section elasticity of more piece plug section.
Two, there is the adjustable flexible plug of new structural diameter second:
Including inner sleeve plug section, metal connection buckle, it is externally embedded to plug section, elastic rubber stick；One is externally embedded to plug section
The mutually nested single-unit plug section integral in an inner sleeve plug section shape, more piece plug section by elastic rubber mandrel to
Concatenation constitutes complete flexible plug；It inner sleeve plug section in more piece plug section and is externally embedded on plug section and is provided with through-hole,
Elastic rubber stick is arranged in the through-hole on inner sleeve plug section and concatenates the inner sleeve plug section elasticity of more piece plug section, elastic rubber
Glue stick is arranged in the through-hole being externally embedded on plug section and more piece plug section is externally embedded to plug section elasticity concatenation.
The inner sleeve plug section is spheroid structure, and spheroid structure is the portion cut down by ball by two parallel planes
Point, the outer peripheral surface of inner sleeve plug section is spherical surface, to be externally embedded to plug section be by two inner and outer circumferential surfaces be spherical surface semi-ring body
The ring structure being spliced to form is externally embedded to the spherical surface of plug section inner peripheral surface and the spherical crown surface of inner sleeve plug section spheroid structure
For same spherical surface, the spherical crown surface of the spherical surface and inner sleeve plug section spheroid structure that are externally embedded to plug section outer peripheral surface is homocentric sphere
Face.
It the inner sleeve plug section and is externally embedded between plug section through the cooperation mutually nested with internal lobes of T v notch v slot
Connection, is then fixedly connected by metal connection buckle, specifically: the outer peripheral surface side of inner sleeve plug section spheroid structure is provided with
T v notch v slot, the inner peripheral surface for being externally embedded to two semi-ring bodies of plug section wherein one end are equipped with the internal lobes extended radially inwardly,
Two semi-ring bodies for being externally embedded to plug section are arranged in the two sides outer peripheral surface of inner sleeve plug section and form complete annular solid
Structures to form makes two at T-shaped lugs of internal lobes split shape after two semi-ring body splicings, and T shape lug is fitted to T v notch v
In slot, so that inner sleeve plug section and being externally embedded to circumferentially fixed between plug section；The bottom of inner sleeve plug section by T v notch v slot
It is provided with threaded hole on face, threaded hole, the threaded hole and inner sleeve core of semi-ring body are provided on the bottom surface of the semi-ring body by internal lobes
The threaded hole of ear of maize section is connected by metal connection buckle with screw.So that inner sleeve plug section and being externally embedded between plug section
It is fixedly connected by metal connection buckle and using screw connection integral.
It the inner sleeve plug section of every section plug section and is externally embedded on plug section and is provided with multiple through-holes, it is each to save the interior of plug section
The multiple through-hole positions for covering plug section are identical, each multiple through-hole position phases for being externally embedded to plug section for saving plug section
Together；The through-hole of the inner sleeve plug section of each section plug section of same position is concatenated by same root elastic rubber stick, same position
Each section plug section the through-hole for being externally embedded to plug section pass through same root elastic rubber stick concatenate.
The elastic rubber stick is arranged in inner sleeve plug section and is fixedly connected with the through hole being externally embedded on plug section.
Described be externally embedded to outside plug section is nested with one layer or multilayer is similar to and is externally embedded to the toroidal cores that plug saves itself
Ear of maize section, so that toroidal cores ear of maize section, inner sleeve plug section and being externally embedded to plug and saving to form whole single-unit plug section, so that core
Clavus enlarged-diameter forms the different plug section of diameter.
Thus the present invention can be nested different layers of similar to the multilayer for being externally embedded to plug section outside inner sleeve plug section
Plug section structure obtains the different every section plug section of diameter, so that the diameter of flexible plug is adjustable.
The toroidal cores ear of maize section of each section plug section is concatenated by elastic rubber stick.
Multiple through-holes are provided on the toroidal cores ear of maize section of every section plug section, respectively save the more of the toroidal cores ear of maize section of plug section
A through-hole position is identical, and the through-hole of the toroidal cores ear of maize section of each section plug section of same position passes through same root elastic rubber
Stick concatenation.
Connection type between each plug section of the present invention is simple and reliable, by the mutually nested relationship of each plug section with
And the connection of elastic rubber stick avoids traditional cumbersome assembly of socket arrangement plug and tears open so that assembly or disassembly facilitates simple
Unload mode.
The beneficial effects of the present invention are:
Flexible plug of the invention is serially connected on elastic rubber stick using plug section and keeps uniformly being spaced and constituting core
Stick, the connection type between each plug section is simple and reliable, and the flexible mandrel structure of composition is simple, assembly easy to process.
The present invention saves the mutually nested connection plug that form diameter different from plug is externally embedded to by inner core clavus
Section, realizes the adjustable function of diameter of mandrel, and the bending forming of the bending pipe fitting suitable for different tube diameters has flexibility
And adjustability, and material is saved, reduce cost.It is directed to the bending pipe fitting of different tube diameters, it can be corresponding outer by selecting
Embedding plug section and the nested number of plies are the nested number for being externally embedded to plug section, are suitable for bending pipe fitting caliber to be formed
Plug section.
Detailed description of the invention
A kind of implementation diagram that Fig. 1 is the plug section of plug of the invention flexible when being diameter minimum；
The structural schematic diagram that Fig. 2 is the plug section of plug of the invention flexible when be the nested number of plies being one layer；
Fig. 3 be inner sleeve plug section 1 of the present invention be externally embedded to plug section 3 mutually be embedded in structure front view；
Fig. 4 be inner sleeve plug section 1 of the present invention be externally embedded to plug section 3 mutually be embedded in structural side view.
In figure, inner sleeve plug section 1, is externally embedded to plug section 3, elastic rubber stick 4 at metal connection buckle 2.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, one embodiment of the present invention is that only inner sleeve plug section 1 is sequentially connected in series in elastic rubber stick 4
On, uniform spacing is kept between each inner sleeve plug section 1, so that one for constituting diameter as minimum value in adjustable extent is soft
Property plug.
As shown in Fig. 2, another specific implementation of the present invention includes including inner sleeve plug section 1, metal connection buckle 2, is externally embedded to
Plug section 3, elastic rubber stick 4；One to be externally embedded to plug section 3 mutually nested integral in inner sleeve plug 1 shape of section
Single-unit plug section, more piece plug section is complete flexible to keep uniform interval to be made up of the axial concatenation of elastic rubber stick 4
Plug；It inner sleeve plug section 1 in more piece plug section and is externally embedded on plug section 3 and is provided with through-hole, elastic rubber stick 4 is arranged in
Through-hole on inner sleeve plug section 1 concatenates 1 elasticity of inner sleeve plug section of more piece plug section, and elastic rubber stick 4 is arranged in outer
Through-hole on embedding plug section 3 concatenates 3 elasticity of plug section that is externally embedded to of more piece plug section.
As shown in Figure 3 and Figure 4, inner sleeve plug section 1 is spheroid structure, and spheroid structure is parallel flat by two by ball
The part that face is cut down, the outer peripheral surface of inner sleeve plug section 1 are spherical surface, and it is ball that be externally embedded to plug section 3, which be by two inner and outer circumferential surfaces,
The ring structure that the semi-ring body in face is spliced to form is externally embedded to 1 segment of spherical surface and inner sleeve plug section of 3 inner peripheral surface of plug section
The spherical crown surface of body structure is same spherical surface, is externally embedded to the 1 spheroid structure of spherical surface and inner sleeve plug section of 3 outer peripheral surface of plug section
Spherical crown surface is concentric spherical.
The outer peripheral surface side of 1 spheroid structure of inner sleeve plug section is provided with T v notch v slot, is externally embedded to two of plug section 3
The inner peripheral surface of semi-ring body wherein one end is equipped with the internal lobes that extend radially inwardly, is externally embedded to two semi-ring bodies of plug section 3
The two sides outer peripheral surface for being arranged in inner sleeve plug section 1 forms complete ring structure splicing, two semi-ring body splicings
After make two at T-shaped lugs of internal lobes split shape, T shape lug is in T v notch v slot, so that 1 He of inner sleeve plug section
It is externally embedded to circumferentially fixed between plug section 3；Threaded hole, internal lobes are provided on the bottom surface of inner sleeve plug section 1 by T v notch v slot
It is provided with threaded hole on the bottom surface of other semi-ring body, the threaded hole of semi-ring body and the threaded hole of inner sleeve plug section 1 pass through gold
Belong to connection buckle 2 to connect with screw, i.e., 2 both ends of metal connection buckle are provided with through-hole, and screw is connected in threaded hole across through-hole and realizes
Connection.Metal connection buckle 2 is arranged in the T v notch v slot of inner sleeve plug section 1 and is externally embedded to the T shape lug of plug section 3 circumferentially
Two sides by, and be arranged in and inner sleeve plug section 1 and be externally embedded on two bottom surfaces of plug section 3.
It the inner sleeve plug section 1 of every section plug section and is externally embedded on plug section 3 and is provided with multiple through-holes, each plug section that saves
Multiple through-hole positions of inner sleeve plug section 1 are identical, each multiple through-hole cloth set for being externally embedded to plug section 3 for saving plug section
It sets identical；The through-hole of the inner sleeve plug section 1 of each section plug section of same position is concatenated by same root elastic rubber stick 4, phase
The through-hole for being externally embedded to plug section 3 with each section plug section of position is concatenated by same root elastic rubber stick 4.
Elastic rubber stick 4 is arranged in inner sleeve plug section 1 and is fixedly connected with the through hole being externally embedded on plug section 3.It is each
Plug section keeps uniformly being spaced along elastic rubber stick 4.
In specific implementation, it is externally embedded to outside plug section 3 and is nested with one layer or multilayer is similar to and is externally embedded to plug section 3 itself
Toroidal cores ear of maize section, so that toroidal cores ear of maize section, inner sleeve plug section 1 and being externally embedded to plug section 3 and forming whole single-unit plug
Section, so that plug section enlarged-diameter, forms the different plug section of diameter.The toroidal cores ear of maize being externally embedded to except plug section 3
Being nested between plug section 3 is saved and is externally embedded to connection structure and inner sleeve plug section 1 and to be externally embedded to mutually embedding between plug section 3
Casing connecting structure is identical.
The toroidal cores ear of maize section of each section plug section is concatenated by elastic rubber stick 4.The toroidal cores ear of maize section of every section plug section
On be provided with multiple through-holes, multiple through-hole positions of each toroidal cores ear of maize section for saving plug section are identical, same position it is each
The through-hole for saving the toroidal cores ear of maize section of plug section is concatenated by same root elastic rubber stick 4.
The present invention is sequentially connected in series each plug section by elastic rubber stick and constitutes flexible plug, the simple easy processing of structure,
And easily assembly；And diameter can be formed not with the mutually nested connection being externally embedded between plug section by inner sleeve plug section
Same plug section realizes the adjustable function of diameter of flexible plug, is applicable to the bending pipe fitting of different tube diameters, has spirit
Adjustability living, can save material, reduce cost.
Claims (8)
1. a kind of adjustable flexible plug of diameter, it is characterised in that: including inner sleeve plug section (1), metal connection buckle
(2), plug section (3), elastic rubber stick (4) are externally embedded to；One to be externally embedded to plug section (3) mutually nested in inner sleeve plug
The integral single-unit plug section of (1) shape is saved, axially concatenation composition is complete flexible by elastic rubber stick (4) for more piece plug section
Plug；It inner sleeve plug section (1) in more piece plug section and is externally embedded on plug section (3) and is provided with through-hole, elastic rubber stick (4)
The through-hole on inner sleeve plug section (1) is arranged in by inner sleeve plug section (1) the elasticity concatenation of more piece plug section, elastic rubber stick
(4) it is arranged in the through-hole being externally embedded on plug section (3) and more piece plug section is externally embedded to plug section (3) elasticity concatenation.
2. a kind of adjustable flexible plug of diameter according to claim 1, it is characterised in that: the inner sleeve plug
Son section (1) is spheroid structure, and spheroid structure is the part cut down by ball by two parallel planes, is externally embedded to plug section (3)
It is the ring structure being spliced to form by the semi-ring body that two inner and outer circumferential surfaces are spherical surface.
3. a kind of adjustable flexible plug of diameter according to claim 2, it is characterised in that: the inner sleeve plug
Son saves (1) and is externally embedded between plug section (3) through the mating connection mutually nested with internal lobes of T v notch v slot, then passes through gold
Belong to connection buckle (2) to be fixedly connected, specifically: the outer peripheral surface side of inner sleeve plug section (1) spheroid structure is provided with T v notch v
Slot, the inner peripheral surface for being externally embedded to two semi-ring bodies of plug section (3) wherein one end are equipped with the internal lobes extended radially inwardly, are externally embedded to
The two sides outer peripheral surface that two semi-ring bodies of plug section (3) are arranged in inner sleeve plug section (1) forms complete annular
Body structures to form makes two at T-shaped lugs of internal lobes split shape after two semi-ring body splicings, and T shape lug is lacked fitted to T shape
In mouthful slot, so that inner sleeve plug section (1) and being externally embedded to circumferentially fixed between plug section (3)；Inner sleeve plug by T v notch v slot
It is provided with threaded hole on the bottom surface of son section (1), threaded hole, the screw thread of semi-ring body are provided on the bottom surface of the semi-ring body by internal lobes
Hole is connected by metal connection buckle (2) with screw with the threaded hole of inner sleeve plug section (1).
4. a kind of adjustable flexible plug of diameter according to claim 1, it is characterised in that: every section plug section it is interior
It covers plug section (1) and is externally embedded on plug section (3) and be provided with multiple through-holes, each inner sleeve plug section (1) for saving plug section
Multiple through-hole positions are identical, and each multiple through-hole positions for being externally embedded to plug section (3) for saving plug section are identical；Identical bits
The through-hole of the inner sleeve plug section (1) for each section plug section set by same root elastic rubber stick (4) concatenate, same position it is each
The through-hole for being externally embedded to plug section (3) for saving plug section is concatenated by same root elastic rubber stick (4).
5. a kind of adjustable flexible plug of diameter according to claim 4, it is characterised in that: the elastic rubber
Stick (4) is arranged in inner sleeve plug section (1) and is fixedly connected with the through hole being externally embedded on plug section (3).
6. a kind of adjustable flexible plug of diameter according to claim 1, it is characterised in that: described is externally embedded to plug
It is nested with one layer outside son section (3) or multilayer is similar to the toroidal cores ear of maize section for being externally embedded to plug section (3) itself, so that toroidal cores
Ear of maize section, inner sleeve plug section (1) and the single-unit plug section for being externally embedded to plug section (3) formation entirety, so that plug section diameter expands
Greatly, the different plug section of diameter is formed.
7. a kind of adjustable flexible plug of diameter according to claim 6, it is characterised in that: each section plug
The toroidal cores ear of maize section of section is concatenated by elastic rubber stick (4).
8. a kind of adjustable flexible plug of diameter according to claim 7, it is characterised in that: the ring of every section plug section
Multiple through-holes are provided on shape plug section, multiple through-hole positions of each toroidal cores ear of maize section for saving plug section are identical, phase
Through-hole with the toroidal cores ear of maize section of each section plug section of position is concatenated by same root elastic rubber stick (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810051034.1A CN108097762B (en) | 2018-01-18 | 2018-01-18 | One kind having the adjustable flexible plug of new structural diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810051034.1A CN108097762B (en) | 2018-01-18 | 2018-01-18 | One kind having the adjustable flexible plug of new structural diameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108097762A CN108097762A (en) | 2018-06-01 |
| CN108097762B true CN108097762B (en) | 2019-09-13 |
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ID=62220212
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810051034.1A Active CN108097762B (en) | 2018-01-18 | 2018-01-18 | One kind having the adjustable flexible plug of new structural diameter |
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| CN (1) | CN108097762B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226387B (en) * | 2018-10-22 | 2023-09-15 | 扬州市美华电气有限公司 | Simple pipe bending machine |
| CN109382429A (en) * | 2018-11-05 | 2019-02-26 | 凌云工业股份有限公司汽车零部件研发分公司 | A kind of fuse of body of a motor car A column three-dimensional bending molding |
| CN110216178B (en) * | 2019-04-19 | 2020-06-05 | 浙江大学 | Ratchet wheel contrary rotation reducing's slider formula cross-section full support core rod structure that ends |
| CN110560530B (en) * | 2019-10-12 | 2020-12-22 | 合肥工业大学 | Variable-diameter crease-resistant core rod for bent pipe |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671096A (en) * | 1985-09-23 | 1987-06-09 | Lockheed Corporation | Adjustable ball mandrel |
| JPH11179437A (en) * | 1997-12-24 | 1999-07-06 | Nippon Light Metal Co Ltd | Bending mandrel and push-through bending method |
| RU2201308C2 (en) * | 2000-06-09 | 2003-03-27 | Федеральное государственное унитарное предприятие "Научно-исследовательский институт автоматизированных средств производства и контроля" | Method for bending tubes and apparatus for performing the same |
| CN104289570B (en) * | 2014-09-25 | 2016-06-29 | 浙江工业大学 | A kind of bend pipe elasticity plug |
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2018
- 2018-01-18 CN CN201810051034.1A patent/CN108097762B/en active Active
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