CN108393379B - A kind of electromagnetic type plug - Google Patents

A kind of electromagnetic type plug Download PDF

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Publication number
CN108393379B
CN108393379B CN201810178673.4A CN201810178673A CN108393379B CN 108393379 B CN108393379 B CN 108393379B CN 201810178673 A CN201810178673 A CN 201810178673A CN 108393379 B CN108393379 B CN 108393379B
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China
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electromagnet
magnetic core
core section
magnetic
spherical crown
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CN201810178673.4A
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CN108393379A (en
Inventor
张树有
周会芳
伊国栋
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Zhejiang University ZJU
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Zhejiang University ZJU
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D9/00Bending tubes using mandrels or the like
    • B21D9/01Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
    • B21D9/03Bending 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnets (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

The invention discloses a kind of electromagnetic type plugs.Including magnetic core section, electromagnet, coil and magnetic mandrel;Several magnetic core section concatenations constitute the main body of electromagnetic type plug, it is connected between adjacent magnetic core section through electromagnet, and the end after several magnetic core section concatenations is through electromagnet and magnetic core axis connection, coil is wound on electromagnet and connects external circuit, when the coil being wound on electromagnet is powered, so that attracting each other between the electromagnet and magnetic core section of connection and between electromagnet and magnetic mandrel, to realize that magnetic core section, electromagnet, magnetic mandrel are sequentially connected in series and constitute entire plug.Electromagnetic type mandrel structure of the invention is simple, is easily assembled disassembly.

Description

A kind of electromagnetic type plug
Technical field
The present invention relates to thin-wall metal pipe bending forming technical fields, more particularly, to a kind of electromagnetic type plug.
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.The main function that thin-wall tube bends middle plug is 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 generate It influences.The design and application of plug reasonably solve the subproblem occurred in bending forming, and the design of plug is to pipe fitting matter Amount has a major impact.
Currently, the mandrel form being commonly used in the thin-wall pipe bending forming process for having core clod wash is ball-and-socket type core Stick.Ball-and-socket type plug can be bent in many ways, adapt to various modifications, single, the multiple and complex bend suitable for thin-wall tube.But It is being attached using multiple ball-joints between each core print and core print and mandrel of ball-and-socket type plug, ball-joint top is ball Shape body protrusion, tail end are the spherical socket of indent, are that spherical surface is hinged between each ball-joint, the orbicule on one of ball-joint top is convex It rises and is inlaid in the interior concave ball shape socket of another ball-joint tail end.Ball-and-socket type plug section shape and structure is complicated, and ball-joint tail end is interior Recessed spherical socket manufactures processing difficulties, and machining accuracy is difficult to ensure;In addition the connection between each ball-joint is using ball Shape body protrusion is inlaid in the mode in interior concave ball shape socket, needs to cut open ball-joint into dimidiation in assembling process, then in its tail The orbicule protrusion of another ball-joint is embedded in the indent socket in portion, assembly and disassembly is difficult;For ball-and-socket type plug, spherical convex body Junction between sphere socket is a weak part, during core pulling after brake forming, due to plug and pipe fitting Between frictional force it is very big, the junction of ball bumps and sphere socket will receive very big power, will lead to and is drawn when serious It is disconnected.
Summary of the invention
In order to solve the problems, such as background technique, the purpose of the present invention is design a kind of structure simply easily manufacture plus The electromagnetic type plug of work, easy assembly and disassembly, this plug can solve the problems, such as that ball-and-socket type plug manufacture difficult processing, assembly and disassembly are difficult.
The technical solution adopted by the present invention is that:
The present invention includes magnetic core section, electromagnet, coil and magnetic mandrel;Several magnetic core section concatenations constitute electromagnetic type core The main body of stick is connected through electromagnet between adjacent magnetic core section, and the end after several magnetic core sections concatenation is through electromagnet With magnetic core axis connection, coil is wound on electromagnet and connects external circuit, when the coil being wound on electromagnet is powered, makes It attracts each other between the electromagnet that must be connected and magnetic core section and between electromagnet and magnetic mandrel, to realize magnetic core Section, electromagnet, magnetic mandrel are sequentially connected in series and constitute entire plug.
It is evagination spherical crown surface, the column structure that lateral column face is spherical surface that the magnetic core section, which is both ends of the surface, both ends of the surface it is outer The centre of sphere of the spherical surface of the centre of sphere and lateral column face of convex spherical crown surface is respectively positioned on the central axis of column structure;The electromagnet is two End face is indent spherical crown surface, the column structure that lateral column face is ring fillister, and the bus of ring fillister is interior concave arc, both ends The centre of sphere of the indent spherical crown surface in face is located on the central axis of column structure;The magnetic mandrel is that end face is evagination spherical crown surface Column structure, the centre of sphere of evagination spherical crown surface is located on the central axis of magnetic mandrel;The evagination spherical crown of the magnetic mandrel The evagination spherical crown surface in face, the indent spherical crown surface of electromagnet and magnetic core section is the identical spherical surface of diameter so that magnetic core section with Between electromagnet, cooperating between magnetic mandrel and electromagnet connects, and realizes magnetic core section, electromagnet, magnetic mandrel concatenation Constitute entire plug.
The structure design of the above-mentioned magnetic core section of the present invention and electromagnet can make plug connect when moving in pipeline with pipeline Touching rotation is more flexible.
The coil is wound in the lateral column face among electromagnet.
It is connected in series between the coil being wound on each electromagnet.
When the coil is powered, the evagination spherical crown surface of magnetic core section and magnetic mandrel is adsorbed in electromagnet In recessed spherical crown surface.
In the present invention, the connection between connection, electromagnet and magnetic mandrel between magnetic core section and electromagnet is ball The non-embedded magnetic connection of crown.
The beneficial effects of the present invention are:
The present invention is able to solve the problem of manufacture difficult processing present in traditional ball-and-socket type plug, assembly and disassembly hardly possible.
The present invention is when the coil being wound on electromagnet is powered, by electromagnet magnetic core section, magnetic mandrel difference It adsorbs in the spherical crown surface groove at its two sides center, successively adjacent concatenation is constituted for magnetic core section, electromagnet and magnetic mandrel Complete plug.
Connection in electromagnetic type mandrel structure of the invention, between magnetic core section and electromagnet, magnetic mandrel and electromagnet Mode is the non-embedded magnetic connection of spherical crown surface, simple and reliable and flexible, simple easy processing, and easy assembly and disassembly.
Detailed description of the invention
Fig. 1 is the overall schematic of electromagnetic type plug of the invention;
Fig. 2 is the schematic diagram of the electromagnet of wound around coil of the invention;
Fig. 3 is the front view of electromagnet of the invention;
Fig. 4 is the front view of magnetic core section of the invention.
In figure, magnetic core section 1, electromagnet 2, coil 3, magnetic mandrel 4.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, the present invention includes magnetic core section 1, electromagnet 2, coil 3 and magnetic mandrel 4;Several magnetic core sections 1 Concatenation constitutes the main body of electromagnetic type plug, connects between adjacent magnetic core section 1 through electromagnet 2, and several magnetic core sections 1 concatenate An end afterwards is connect through electromagnet 2 with magnetic mandrel 4, and coil 3 is wound on electromagnet 2 and connects external circuit, is wound in When coil 3 on electromagnet 2 is powered, so that between the electromagnet 2 and magnetic core section 1 of connection and electromagnet 2 and magnetism mandrel 4 Between attract each other, so that realizing that magnetic core section 1, electromagnet 2, magnetic mandrel 4 are sequentially connected in series constitutes entire plug.
As shown in figure 4, it is evagination spherical crown surface, the column structure that lateral column face is spherical surface that magnetic core section 1, which is both ends of the surface, both ends The centre of sphere of the spherical surface of the centre of sphere and lateral column face of spherical crown surface is respectively positioned on the central axis of column structure.Magnetic core section 1 is substantially back Swivel structure, wherein the bus of revolving body is constituted by being located at both ends and three sections of intermediate circular sliding slopes, three sections of equal evaginations of circular arc, The center of circle of three sections of circular arcs is conllinear, and the rotating shaft of revolving body is straight line where three sections of circular arc centers of circle, while being located at two sections of circles at both ends The one of endpoint of arc is located at turn around on axis.
As shown in Figures 2 and 3, it is indent spherical crown surface, the cylinder knot that lateral column face is ring fillister that electromagnet 2, which is both ends of the surface, Structure, the bus of ring fillister are interior concave arc, and coil 3 is wound in the lateral column face among electromagnet 2, the indent spherical crown surface at both ends The centre of sphere be located on the central axis of column structure, the spherical crown height of indent spherical crown surface is less than the sphere diameter of spherical crown surface.2 essence of electromagnet For rotary structure, the bus of revolving body is by the circular arc positioned at both ends, intermediate circular arc and connection both ends circular arc and middle circle Two sections of broken lines of arc are constituted, three sections of equal indents of circular arc, wherein the center of circle and one of endpoint positioned at the circular arc at both ends It is respectively positioned on rotating shaft, the center of circle of interlude circular arc is located on the perpendicular bisector of the circle center line connecting of both ends circular arc.
Magnetic mandrel 4 is the column structure that end face is evagination spherical crown surface, and the centre of sphere of evagination spherical crown surface is located at magnetic mandrel 4 On central axis.
The evagination spherical crown surface of the evagination spherical crown surface of magnetic mandrel 4, the indent spherical crown surface of electromagnet 2 and magnetic core section 1 is The identical spherical surface of diameter, so that between magnetic core section 1 and electromagnet 2, cooperating between magnetic mandrel 4 and electromagnet 2 connects, Realize that magnetic core section 1, electromagnet 2, the magnetic concatenation of mandrel 4 constitute entire plug.
It is connected in series between the coil 3 being wound on each electromagnet 2.When coil 3 is powered, magnetic core section 1 and magnetic core The evagination spherical crown surface of axis 4 is adsorbed in the indent spherical crown surface of electromagnet 2.
Implementation process of the invention is:
Magnetic mandrel 4 is fixed on outer base, the plug main body that magnetic core section 1 and electromagnet 2 are constituted extend into pipe In road, when coil 3 is powered, the evagination spherical crown surface of magnetic core section 1 is adsorbed in the indent spherical crown surface of electromagnet 2, the two Between connection be the non-embedded magnetic connection of spherical crown surface, so as to realize flexible phase between magnetic core section 1 and electromagnet 2 To rotation, thus in pipe fitting bending process, magnetic core section 1 can be bent with pipe fitting and be relatively rotated, and give pipe always Part support improves pipe fitting bending quality so as to prevent the excessive fasciation in pipe fitting bending section cross section.

Claims (5)

1. a kind of electromagnetic type plug, it is characterised in that: including magnetic core section (1), electromagnet (2), coil (3) and magnetic mandrel (4);Several magnetic core section (1) concatenations constitute the main body of electromagnetic type plug, connect between adjacent magnetic core section (1) through electromagnet (2) It connects, and the end after several magnetic core sections (1) concatenation is connect through electromagnet (2) with magnetic mandrel (4), coil (3) winding In on electromagnet (2) and connecting external circuit, when the coil (3) being wound on electromagnet (2) is powered, so that the electromagnet of connection (2) it attracts each other between magnetic core section (1) and between electromagnet (2) and magnetic mandrel (4), to realize magnetic core section (1), electromagnet (2), magnetic mandrel (4) are sequentially connected in series and constitute entire plug.
2. a kind of electromagnetic type plug according to claim 1, it is characterised in that: the magnetic core section (1) is both ends of the surface For evagination spherical crown surface, the column structure that lateral column face is spherical surface, the spherical surface of the centre of sphere and lateral column face of the evagination spherical crown surface of both ends of the surface The centre of sphere is respectively positioned on the central axis of column structure;The electromagnet (2) is that both ends of the surface are indent spherical crown surface, in lateral column face is The bus of the column structure of hollow toroid slot, ring fillister is interior concave arc, and the centre of sphere of the indent spherical crown surface of both ends of the surface is located at column On the central axis of body structure;The magnetic mandrel (4) is the column structure that end face is evagination spherical crown surface, evagination spherical crown surface The centre of sphere is located on the central axis of magnetic mandrel (4);The indent of the evagination spherical crown surface of the magnetic mandrel (4), electromagnet (2) The evagination spherical crown surface of spherical crown surface and magnetic core section (1) is the identical spherical surface of diameter, so that magnetic core section (1) and electromagnet (2) Between, cooperate connection between magnetic mandrel (4) and electromagnet (2).
3. a kind of electromagnetic type plug according to claim 2, it is characterised in that: the coil (3) is wound in electromagnet (2) intermediate lateral column face.
4. a kind of electromagnetic type plug according to claim 1, it is characterised in that: the line being wound on each electromagnet (2) It is connected in series between circle (3).
5. a kind of electromagnetic type plug according to claim 2, it is characterised in that: when the coil (3) is powered, magnetic core Section (1) and the evagination spherical crown surface of magnetic mandrel (4) are adsorbed in the indent spherical crown surface of electromagnet (2).
CN201810178673.4A 2018-03-05 2018-03-05 A kind of electromagnetic type plug Active CN108393379B (en)

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Application Number Priority Date Filing Date Title
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CN108393379B true CN108393379B (en) 2019-03-05

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU673345A1 (en) * 1976-09-01 1979-07-15 Предприятие П/Я Р-6973 Tube-bending mandrel
US4635464A (en) * 1985-09-03 1987-01-13 Eaton Leonard Corporation Tube bending mandrel
CN105215112A (en) * 2015-10-16 2016-01-06 哈尔滨飞机工业集团有限责任公司 A kind of ball-and-socket joint plug with interchangeability
CN205289370U (en) * 2016-01-21 2016-06-08 陕西百思特模具有限公司 A universal dabber of bull for bending machine
WO2016157115A1 (en) * 2015-04-01 2016-10-06 Modelia S.R.L. Apparatus for improving the quality of tube bending and method that uses such apparatus
CN106734435A (en) * 2016-12-24 2017-05-31 无锡市通亦和精密机械有限公司 A kind of bend pipe auxiliary fixture
CN206997434U (en) * 2017-08-14 2018-02-13 江阴市液压油管有限公司 The universal plug of bend pipe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU673345A1 (en) * 1976-09-01 1979-07-15 Предприятие П/Я Р-6973 Tube-bending mandrel
US4635464A (en) * 1985-09-03 1987-01-13 Eaton Leonard Corporation Tube bending mandrel
WO2016157115A1 (en) * 2015-04-01 2016-10-06 Modelia S.R.L. Apparatus for improving the quality of tube bending and method that uses such apparatus
CN105215112A (en) * 2015-10-16 2016-01-06 哈尔滨飞机工业集团有限责任公司 A kind of ball-and-socket joint plug with interchangeability
CN205289370U (en) * 2016-01-21 2016-06-08 陕西百思特模具有限公司 A universal dabber of bull for bending machine
CN106734435A (en) * 2016-12-24 2017-05-31 无锡市通亦和精密机械有限公司 A kind of bend pipe auxiliary fixture
CN206997434U (en) * 2017-08-14 2018-02-13 江阴市液压油管有限公司 The universal plug of bend pipe

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