CN113857324B - Conduit joint spinning connecting device - Google Patents
Conduit joint spinning connecting device Download PDFInfo
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- CN113857324B CN113857324B CN202111284356.9A CN202111284356A CN113857324B CN 113857324 B CN113857324 B CN 113857324B CN 202111284356 A CN202111284356 A CN 202111284356A CN 113857324 B CN113857324 B CN 113857324B
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- spinning
- mandrel
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- conical part
- retainer
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- 238000009987 spinning Methods 0.000 title claims abstract description 131
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 230000007423 decrease Effects 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 5
- 238000010168 coupling process Methods 0.000 claims 5
- 238000005859 coupling reaction Methods 0.000 claims 5
- 238000012545 processing Methods 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/18—Spinning using tools guided to produce the required profile
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a conduit joint spinning connecting device, which belongs to the technical field of conduit joint connection and comprises: the device comprises a mandrel, a retainer, a spinning piece and a driving piece; one end of the mandrel is provided with a conical part, the conical part is inserted into the catheter, and the outer diameter of the conical part gradually decreases along the direction pointing to the inner side of the catheter; the retainer is sleeved on the outer side of the mandrel; the retainer is provided with a supporting rod which is arranged along the axial direction of the mandrel; the spinning piece is arranged on the retainer and is used for carrying out spinning operation on the inner wall of the guide pipe; the spinning piece is correspondingly provided with a strip hole which is matched with the supporting rod, and the length direction of the strip hole is consistent with the radial direction of the mandrel; a limiting block is arranged on the supporting rod and used for limiting the spinning piece on the supporting rod; the rotary pressing piece is installed in a matched mode with the conical part, and the driving piece is used for driving the mandrel to rotate around the shaft and simultaneously feeding the mandrel along the axial direction of the mandrel. The pipe joint spinning connecting device provided by the invention realizes accurate control of the processing amount of the pipe.
Description
Technical Field
The invention belongs to the technical field of conduit connector connection, and particularly relates to a conduit connector spinning connection device.
Background
At present, the main stream aviation conduit connection joint in China is in a flaring type, and stainless steel is mainly selected as a material. The flaring type conduit connecting joint has the characteristics of simple structure and easy processing. However, with the accumulation of years of use and maintenance experience, flared conduit connection joints have been increasingly found to suffer from the following drawbacks: (1) the area of the sealing surface is large, resulting in a decrease in the sealing property; (2) The self-locking capability is not provided, and the fuse is required to be locked, so that the reliability and the assembly period of the system are affected; (3) The plastic deformation amount required by flaring forming is large, larger residual stress is generated, and a fatigue fracture source is increased; (4) Shape errors and surface scratches are easy to generate in the disassembly and assembly process, and the maintenance are not facilitated.
In view of the defects of flaring type connecting joints, the development of the flaring-free connecting joints in the form of expansion is started in the beginning of the century in China, and the principle is that the pipe is pressed in a pipe sleeve-shaped groove by means of a pre-installation machine and by means of bulging force generated by compressing a rubber sleeve, so that the sealing of the pipe and the pipe sleeve is realized. The technology solves the processing problem of the light alloy conduit joint with medium yield strength.
The existing connecting device of the conduit joint is complex in structure and cannot accurately control the machining process, so that the production quality is affected.
Disclosure of Invention
The invention aims to provide a conduit joint spinning connecting device, which aims to solve the problem that the existing conduit joint connecting device cannot solve the problem of connecting a high-strength titanium alloy conduit.
In order to achieve the above purpose, the invention adopts the following technical scheme: there is provided a conduit fitting spin-on connection apparatus comprising: the device comprises a mandrel, a retainer, a spinning piece and a driving piece; one end of the mandrel is provided with a conical part, the conical part is inserted into the catheter, and the outer diameter of the conical part gradually decreases along the direction pointing to the inner side of the catheter; the retainer is sleeved on the outer side of the mandrel; the retainer is provided with a supporting rod, and the supporting rod is arranged along the axial direction of the mandrel; the spinning piece is arranged on the retainer and is used for carrying out spinning operation on the inner wall of the guide pipe; the rotary pressing piece is correspondingly provided with a strip hole which is matched with the supporting rod, and the length direction of the strip hole is consistent with the radial direction of the mandrel; a limiting block is arranged on the supporting rod and used for limiting the spinning piece on the supporting rod; the spinning piece is matched with the conical part, and the driving piece is used for driving the mandrel to rotate around the shaft and simultaneously providing feeding of the mandrel along the axial direction of the mandrel; the spinning piece and the mandrel rotate coaxially and move outwards in the radial direction of the mandrel under the driving action of the conical part.
In one possible implementation manner, the outer circumferential surface of the spinning piece is an arc surface, and the radian of the arc surface is matched with the inner wall of the catheter.
In one possible implementation, the number of the spinning members is plural, and the spinning members are arranged along the circumferential direction of the tapered portion.
In one possible implementation manner, the limiting block is fixedly installed at the free end of the supporting rod, and the limiting block abuts against the outer side face of the spinning piece and is used for limiting the freedom degree of the spinning piece moving along the axial direction of the mandrel.
In one possible implementation, an elastic restoring member is installed between the spinning members, and the elastic restoring member provides a force to the spinning members toward the center of the mandrel.
In one possible implementation manner, the elastic reset piece is an annular spring, a plurality of spinning pieces are provided with limiting parts for fixing the annular spring, and the annular spring applies acting force to the spinning pieces at the same time.
In one possible implementation, the limiting portion is an arc-shaped groove.
In one possible implementation, the spinning piece and the taper are connected by a key.
In one possible implementation, a conduit fitting spin-on connection device further includes a support column rotatably connected to the holder, the mandrel extending through the support column and connected to the drive member.
In one possible implementation, the taper is integrally formed with the mandrel.
Compared with the prior art, the spinning connecting device for the conduit joint has the advantages that the retainer is sleeved on the outer side of the mandrel, the spinning part is arranged between the retainer and the mandrel, the supporting rod on the retainer has supporting, guiding and limiting functions on the spinning part, so that the spinning part can only move along the radial direction of the mandrel on the retainer, and when the conical part applies extrusion force on the spinning part, the limiting block on the supporting rod applies reverse acting force on the spinning part, so that the axial acting force of the mandrel applied by the spinning part is counteracted; the mandrel can drive the spinning piece and the retainer to synchronously rotate while rotating. When the guide pipe and the sleeve are connected, the mandrel and the retainer are moved towards the inside of the guide pipe along the axial direction of the mandrel, when the spinning piece moves to correspond to the connecting position of the guide pipe and the sleeve, the retainer stops moving along the axial direction of the mandrel, the driving piece drives the mandrel to rotate around the shaft and simultaneously enables one side of the inside of the guide pipe to move along the axial direction of the mandrel, and as one end of the mandrel is provided with a conical part which is matched with the spinning piece and is provided with a supporting rod which is matched with a strip hole on the spinning piece, the spinning piece can be driven to synchronously rotate in the pushing process of the mandrel and can be extruded, so that the spinning piece can also move outwards along the radial direction of the mandrel while rotating around the axis of the mandrel, and the rotating of the spinning piece can enable the inner diameter of the guide pipe to be enlarged, thereby realizing the fixed connection of the guide pipe and the sleeve. The conduit joint spinning connecting device that this application adopted simple structure, convenient operation will decompose the mode of processing of pipe, and the variation value of pipe internal diameter is related with the radial displacement of spinning piece along the dabber, and the axial displacement of spinning piece along the dabber can be calculated through the feed volume of dabber and the tapering of toper portion to realize the accurate control to the pipe processing volume, guaranteed production quality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a conduit fitting spin-on connection apparatus according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a spinning connection device for conduit connectors according to a first embodiment of the present invention;
fig. 3 is a schematic perspective view of a spinning member according to a first embodiment of the present invention;
fig. 4 is a schematic view of a partially sectional structure of a spinning connection device for a conduit connector according to a second embodiment of the present invention;
FIG. 5 is a schematic view of a spinning connection device for conduit connectors according to a third embodiment of the present invention;
fig. 6 is a schematic view of a mounting structure of a baffle according to a third embodiment of the present invention.
In the figure: 1. a mandrel; 101. a tapered portion; 102. a key; 2. a retainer; 201. a support rod; 202. a limiting block; 3. a spinning member; 301. a slit hole; 302. an elastic reset piece; 303. a limit part; 304. a baffle; 4. a driving member; 5. a support plate; 501. a guide rail; 502. a hydraulic cylinder; 6. a support column; 7. a conduit; 8. a sleeve.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 and 2 together, a spinning connection device for a conduit connector according to the present invention will now be described. The conduit fitting spinning connection device comprises: a mandrel 1, a retainer 2, a spinning piece 3 and a driving piece 4; one end of the mandrel 1 is provided with a conical part 101, the conical part 101 is inserted into the catheter 7, and the outer diameter of the conical part 101 gradually decreases along the direction pointing to the inner side of the catheter 7; the retainer 2 is sleeved on the outer side of the mandrel 1; the retainer 2 is provided with a supporting rod 201, and the supporting rod 201 is arranged along the axial direction of the mandrel 1; the spinning part 3 is arranged on the retainer 2 and is used for carrying out spinning operation on the inner wall of the guide pipe 7; the spinning piece 3 is correspondingly provided with a strip hole 301 which is matched with the supporting rod 201, and the length direction of the strip hole 301 is consistent with the radial direction of the mandrel 1; a limiting block 202 is arranged on the supporting rod 201, and the limiting block 202 is used for limiting the spinning piece 3 on the supporting rod 201; the rotary pressing part 3 is matched with the conical part 101, and the driving part 4 is used for driving the mandrel 1 to rotate around the shaft and simultaneously providing feeding of the mandrel 1 along the axial direction of the mandrel 1; the rotary press 3 rotates coaxially with the mandrel 1, and moves radially outward of the mandrel 1 by the driving of the tapered portion 101.
Compared with the prior art, the pipe joint spinning connecting device provided by the embodiment has the advantages that the retainer 2 is sleeved on the outer side of the mandrel 1, the spinning piece 3 is arranged between the retainer 2 and the mandrel 1, the supporting rod 201 on the retainer 2 has supporting, guiding and limiting functions on the spinning piece 3, the spinning piece 3 can only move along the radial direction of the mandrel 1 on the retainer 2, and when the conical part 101 applies extrusion force to the spinning piece 3, the limiting block 202 on the supporting rod 201 applies reverse acting force to the spinning piece 3, so that the axial acting force of the mandrel 1 applied by the spinning piece 3 is counteracted; the mandrel 1 can drive the spinning piece 3 and the retainer 2 to synchronously rotate while rotating. When the guide tube 7 and the sleeve 8 are connected, the mandrel 1 and the retainer 2 are moved towards the inside of the guide tube 7 along the axial direction of the mandrel 1, when the spinning piece 3 moves to correspond to the connecting position of the guide tube 7 and the sleeve 8, the retainer 2 stops moving along the axial direction of the mandrel 1, the driving piece 4 drives the mandrel 1 to rotate around the shaft and simultaneously moves the mandrel 1 towards the inner side of the guide tube 7, and as one end of the mandrel 1 is provided with the conical part 101 which is matched with the spinning piece 3 and the retainer 2 is provided with the supporting rod 201 which is matched with the strip hole 301 on the spinning piece 3, the spinning piece 3 can be driven to synchronously rotate and simultaneously can also squeeze the spinning piece 3, so that the spinning piece 3 can also move outwards along the radial direction of the mandrel 1 while rotating around the axis of the mandrel 1, the inner diameter of the guide tube 7 can be increased, and the fixed connection of the guide tube 7 and the sleeve 8 can be realized. The conduit joint spinning connecting device that this application adopted simple structure, convenient operation will decompose the mode of processing of pipe 7, and the variation value of pipe 7 internal diameter is related to the radial displacement of spinning piece 3 along dabber 1, and the axial displacement of spinning piece 3 along dabber 1 can be calculated through the feed volume of dabber 1 and the tapering of toper portion 101 to realize the accurate control to the pipe 7 processing volume, guaranteed production quality.
In the process of feeding the mandrel 1 in a rotating manner, the spinning piece 3 rotates synchronously with the mandrel 1, and meanwhile, only linear movement along the radial direction and the axial direction of the mandrel 1 occurs relative to the mandrel 1, so that the distance of the spinning piece 3 moving along the radial direction of the mandrel 1 is in linear relation with the feeding amount of the mandrel 1 and the taper of the taper part 101. The structure of the conventional connecting device of the catheter adapter is as follows: the outer side of the core rod is provided with a plurality of rollers, the outer peripheral surface of each roller is attached to the outer peripheral surface of the core rod, the core rod is driven to rotate, so that the rollers are driven to rotate around the axis of each roller, meanwhile, each roller is a conical member, and the core rod is correspondingly provided with conical sections which are matched with the rollers; when the mandrel rotates around the shaft and advances forward, the roller is driven to rotate around the axial direction of the mandrel, and at the same time, the roller synchronously advances forward along with the mandrel and moves outwards, and the rolling of the roller enlarges the inner diameter of the guide pipe 7. Since the rollers are tapered members, the outer peripheral surfaces of the rollers form an angle with the inner wall of the guide tube 7, resulting in a step on the inner surface of the guide tube 7 after bulging.
In some embodiments, referring to fig. 5, the driving member 4 is a motor, and the spindle 1 is fixedly connected to an output shaft of the motor. The conduit joint spinning connecting device further comprises a supporting plate 5, wherein a guide rail 501 which is matched with a base of the motor is fixedly installed on the supporting plate 5, and the length direction of the guide rail 501 is consistent with the axial direction of an output shaft of the motor. The support plate 5 is also provided with a hydraulic cylinder 502 for driving the motor to reciprocate on the guide rail 501, and it should be noted that: other mechanical structures that can drive the motor to reciprocate along a straight line can also be used. The support rod 201 is fixed to the holder 2 by welding.
In some embodiments, referring to fig. 1 and 3, the outer circumferential surface of the spinning member 3 is an arc surface, and the arc surface has an arc shape matching the inner wall of the conduit 7. In this embodiment, since the outer circumferential surface of the spinning member 3 is matched with the inner wall of the pipe 7, there is surface contact between the spinning member 3 and the inner wall of the pipe 7, thereby improving the bulging efficiency of the pipe 7. The length dimension of the spinning piece 3 along the axial direction of the mandrel 1 is larger than the dimension of the part, which needs to be connected with the guide tube 7 and the sleeve tube 8, so that after the spinning piece 3 is moved to a preset position in the guide tube 7, the mandrel 1 is driven to rotate around the shaft by the driving piece 4 and is fed forwards. After the machining operation is completed, the mandrel 1 is firstly pulled out of the guide pipe 7, and simultaneously the bulging force of the spinning piece 3 on the guide pipe 7 disappears, so that the spinning piece 3 is conveniently taken out of the guide pipe 7.
In some embodiments, referring to fig. 1, the number of spinning members 3 is plural, and is arranged along the circumferential direction of the tapered portion 101. In the present embodiment, the spinning members 3 are of a split structure, and a plurality of spinning members 3 are uniformly arranged along the circumferential direction of the tapered portion 101. The mandrel 1 drives the plurality of spinning parts 3 to move outwards simultaneously, so that the plurality of spinning parts 3 simultaneously perform bulging operation on the guide pipe 7, and the processing efficiency is further improved.
In some embodiments, referring to fig. 1 and 2, a limiting block 202 is fixedly mounted at a free end of the supporting rod 201, and the limiting block 202 abuts against an outer side surface of the spinning member 3, so as to limit the freedom of the spinning member 3 moving along the axial direction of the mandrel 1. In this embodiment, the holder 2 has a cylindrical shape. One end of the supporting rod 201 is fixedly installed on the end surface of the holder 2, and the other end of the supporting rod 201 penetrates the spinning piece 3. The shape of the limiting block 202 is annular, and the limiting block 202 and the mandrel 1 are coaxially arranged. The stopper 202 having the annular structure can simultaneously limit the plurality of rotary members 3. The limiting block 202 is connected with the supporting rod 201 through screws.
In some embodiments, referring to fig. 1 and 2, an elastic restoring member 302 is installed between the spinning members 3, and the elastic restoring member 302 provides a force to the spinning members 3 toward the center of the mandrel 1. In this embodiment, the elastic restoring member 302 applies a force to the pressing member 3 so that the pressing member 3 is always kept in contact with the tapered portion 101. After the machining operation is finished, the mandrel 1 moves to the outer side of the guide pipe 7 under the drive of the driving piece 4, and the spinning piece 3 moves to the center of the mandrel 1 under the action of the elastic reset piece 302, so that the spinning piece 3 is separated from the inner wall of the guide pipe 7, and the spinning piece 3 is conveniently taken out of the guide pipe 7 in the next step.
In some embodiments, referring to fig. 1 and 2, the elastic restoring member 302 is an annular spring, and the plurality of screwing members 3 are provided with a limiting portion 303 for fixing the annular spring, and the annular spring applies a force to the plurality of screwing members 3 simultaneously. In this embodiment, the rotary pressing member 3 fixes the ring spring by the stopper 303, and the ring spring can apply a force toward the center of the mandrel 1 to a plurality of rotary pressing members 3 at the same time. The annular spring is capable of overcoming the gravity and centrifugal force of the spinning member 3. The limiting parts 303 are positioned at two ends of the spinning piece 3 along the axial direction of the mandrel 1, and the elastic reset piece 302 applies force to the spinning piece 3 from two ends of the spinning piece 3, so that the stress of the spinning piece 3 is balanced.
In some embodiments, referring to fig. 1, 3 and 6, the limiting portion 303 is an arc-shaped groove. In this embodiment, an arc-shaped groove is provided on the outer side wall of the spinning member 3. When the plurality of rotary pressing pieces 3 are assembled together, the plurality of arc-shaped grooves form a complete circular groove. The annular spring is directly placed in the arc-shaped groove, so that the contact area between the annular spring and the spinning piece 3 is increased, the influence of overlarge local stress on the service life of the annular spring is avoided, meanwhile, the assembly space is saved, and the whole structure is more compact. In order to prevent the annular spring from falling out of the arc-shaped groove, a baffle plate 304 can be arranged on the outer wall of the spinning piece 3, and the baffle plate 304 can block the whole arc-shaped groove and also can block part of the arc-shaped groove, so that the annular spring is blocked in the arc-shaped groove.
In some embodiments, referring to fig. 1, 2 and 4, the connection between the spinning member 3 and the tapered portion 101 is made by a key 102. In this embodiment, the key 102 may be a flat key or a spline. The key 102 guides the rotary pressing member 3, and ensures that the rotary pressing member 3 can only move along the axial direction of the mandrel 1 in the horizontal direction relative to the mandrel 1. The flat key has good centering property, high positioning precision and convenient assembly, the flat key is fixedly arranged on the conical part 101, and a through groove which is in sliding fit with the flat key is formed on the inner surface of the spinning piece 3. The spline and the conical part 101 are of an integrated structure, so that the structure has higher strength, can bear larger load, and has higher manufacturing cost. When the spinning members 3 are connected with the tapered portions 101 by flat keys, the number of the flat keys is the same as that of the spinning members 3 and the flat keys are in one-to-one correspondence, and the flat keys are located at the center of the spinning members 3. When the spinning member 3 is connected to the tapered portion 101 by a spline, the spline on the spinning member 3 is an internal spline, and the spline on the tapered portion 101 is an external spline. A tooth or groove is provided on each of the spinning members 3.
In some embodiments, referring to fig. 5, a pipe joint spinning connection device further includes a support column 6, where the support column 6 is rotatably connected to the holder 2, and the mandrel 1 penetrates the support column 6 to be connected to the driving member 4. In this embodiment, the support columns 6 provide support force for the cage 2, thereby improving the stability of the overall structure of the cage 2.
In some embodiments, referring to fig. 2, the taper 101 is integrally formed with the mandrel 1. In this embodiment, the mandrel 1 and the tapered portion 101 are integrally formed and manufactured by a forging process. The integrated into one piece's structural strength is higher, and is more durable, is favorable to promoting dabber 1's life.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. A conduit fitting spin-on connection comprising: the device comprises a mandrel, a retainer, a spinning piece and a driving piece; one end of the mandrel is provided with a conical part, the conical part is inserted into the catheter, and the outer diameter of the conical part gradually decreases along the direction pointing to the inner side of the catheter; the retainer is sleeved on the outer side of the mandrel; the retainer is provided with a supporting rod, and the supporting rod is arranged along the axial direction of the mandrel; the spinning piece is arranged on the retainer and is used for carrying out spinning operation on the inner wall of the guide pipe; the rotary pressing piece is correspondingly provided with a strip hole which is matched with the supporting rod, and the length direction of the strip hole is consistent with the radial direction of the mandrel; a limiting block is arranged on the supporting rod and used for limiting the spinning piece on the supporting rod; the spinning piece is matched with the conical part, and the driving piece is used for driving the mandrel to rotate around the shaft and simultaneously providing feeding of the mandrel along the axial direction of the mandrel; the spinning piece and the mandrel coaxially rotate and move outwards along the radial direction of the mandrel under the driving action of the conical part;
the outer circumferential surface of the rotary pressing piece is an arc surface, and the radian of the arc surface is matched with the inner wall of the guide pipe;
the spinning piece is of a split structure, and a plurality of spinning pieces are uniformly arranged along the circumferential direction of the conical part;
the spinning piece is connected with the conical part through a key.
2. The conduit coupling spin-on coupling of claim 1, wherein said spin-on members are plural in number and are disposed circumferentially of said tapered portion.
3. The conduit coupling spinning connection apparatus of claim 2, wherein said stopper is fixedly mounted to a free end of said support rod, said stopper abutting against an outer side of said spinning member for limiting the degree of freedom of axial movement of said spinning member along said mandrel.
4. A conduit fitting spinning connection according to claim 2, wherein elastic return members are mounted between said spinning members, said elastic return members providing said spinning members with a force directed toward the centre of said mandrel.
5. The pipe joint spinning connection device according to claim 4, wherein the elastic restoring member is an annular spring, limiting portions for fixing the annular springs are arranged on the spinning members, and the annular springs apply force to the spinning members at the same time.
6. The conduit coupling spin-on connection of claim 5, wherein the stop portion is an arcuate groove.
7. The conduit coupling spin-on connection of claim 1, further comprising a support post rotatably coupled to said cage, said spindle extending through said support post and coupled to said drive member.
8. A conduit fitting spin-on connection according to claim 1, wherein said tapered portion is integrally formed with said mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111284356.9A CN113857324B (en) | 2021-11-01 | 2021-11-01 | Conduit joint spinning connecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111284356.9A CN113857324B (en) | 2021-11-01 | 2021-11-01 | Conduit joint spinning connecting device |
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| CN113857324A CN113857324A (en) | 2021-12-31 |
| CN113857324B true CN113857324B (en) | 2024-01-12 |
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| CN114643305A (en) * | 2022-03-25 | 2022-06-21 | 蔡衡 | Method and equipment for spinning corrugations in stable metal pipe fitting |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1058077A (en) * | 1996-05-23 | 1998-03-03 | Leifeld & Co | Production of rotary symmetry shaped body |
| CN104646998A (en) * | 2014-12-31 | 2015-05-27 | 中国航空工业集团公司北京航空制造工程研究所 | Self-suction bulging device, and rolling press device of pipe interior automatic forming and self-positioning |
| CN106825181A (en) * | 2016-12-09 | 2017-06-13 | 宁波大学 | A kind of general rotation building mortion of conical thin-wall revolving meber |
-
2021
- 2021-11-01 CN CN202111284356.9A patent/CN113857324B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1058077A (en) * | 1996-05-23 | 1998-03-03 | Leifeld & Co | Production of rotary symmetry shaped body |
| CN104646998A (en) * | 2014-12-31 | 2015-05-27 | 中国航空工业集团公司北京航空制造工程研究所 | Self-suction bulging device, and rolling press device of pipe interior automatic forming and self-positioning |
| CN106825181A (en) * | 2016-12-09 | 2017-06-13 | 宁波大学 | A kind of general rotation building mortion of conical thin-wall revolving meber |
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| CN113857324A (en) | 2021-12-31 |
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