CN111633089A - Shaping device for rounding pipe end of metal conduit and inner support assembly thereof - Google Patents
Shaping device for rounding pipe end of metal conduit and inner support assembly thereof Download PDFInfo
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- CN111633089A CN111633089A CN202010600134.2A CN202010600134A CN111633089A CN 111633089 A CN111633089 A CN 111633089A CN 202010600134 A CN202010600134 A CN 202010600134A CN 111633089 A CN111633089 A CN 111633089A
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- inner support
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- guide seat
- pull rod
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- 239000002184 metal Substances 0.000 title claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 31
- 238000007493 shaping process Methods 0.000 title claims abstract description 28
- 230000000399 orthopedic effect Effects 0.000 claims description 36
- 238000003825 pressing Methods 0.000 claims description 13
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
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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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/14—Recontouring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses an inner support assembly of a shaping device for rounding the pipe end of a metal conduit, which comprises a conical head pull rod, a multi-petal inner support die and a guide seat, wherein the multi-petal inner support die forms an inner support body with a cylindrical outer contour, the inner support body penetrates through the guide seat, the front part of the inner support body extends out of the guide seat, and the rear part of the inner support body extends to form an annular convex ring and is axially limited by the guide seat through the annular convex ring; the inner supporting body is in clearance fit with the guide seat, so that the multi-flap inner supporting die on the inner supporting body can move along the radial direction of the inner supporting die; the inner conical surface of the multi-petal inner supporting die is combined to form a conical stress cavity, the conical head pull rod is positioned in the stress cavity, the conical head pull rod is provided with an outer conical surface matched with the stress cavity, and the conical head pull rod moves backwards to drive the inner supporting body to expand outwards. This scheme adopts and draws and expand formula internal stay structure, and during the rounding, the internal mould tip atress that props, the conical head pull rod can play effectual supporting role to the internal mould that props, avoids forming the moment of torsion and is favorable to the rounding of pipe end.
Description
Technical Field
The invention relates to plastic forming pipe end reshaping of a metal conduit, in particular to a reshaping device for pipe end rounding of the metal conduit and an inner support assembly thereof.
Background
Due to the functional requirements and the limitation of compact assembly space in the fields of aviation, aerospace, aviation, nuclear power and the like, the demand for a pipe with short straight-line sections at two ends of a bent pipe is increased. The straight line section of the pipe end is shortened, the requirement of assembly space is reduced, but the pipe end is too close to the elbow, and the plastic deformation of the elbow bending often causes the defects of deformation such as flattening, collapse and the like of the pipe end. When the pipe end is welded with a flange, a metal hose, a joint and the like, larger welding dislocation is formed, which even exceeds the allowable value of the I-grade welding seam dislocation height 0.1 (pipe wall thickness) in the technical requirement of conduit welding of QJ2865A, and the stability and the reliability of the pipe joint are influenced. At present, the plastic forming of the metal conduit and the common shaping process of the pipe end are as follows: 1) extruding the pipe end by adopting a hydraulic extrusion mode of a forming die; 2) the end part of the pipe end is plugged into a conical core rod with the same diameter; 3) the flaring die and the necking die are adopted to perform flaring and then necking. 1) And 2) two shaping modes can play a certain shaping role, but the inside or outside of the pipe is not protected, so that the shaping effect is poor; the 3) shaping mode has complex working procedures and high input mould cost; the shaping mode has no universality for shaping pipe ends of different specifications, and higher die cost is required.
Chinese patent with publication number CN106825273B discloses a round expanding device, which specifically comprises a rebounding device, a round head, a push rod, a frame and a driving device, wherein the rebounding device is connected with the round head, the round head is sleeved on the push rod, the push rod is connected with the driving device, the round head, the push rod and the driving device are all connected on the frame, and the round expanding device solves the problems of relatively complex structure, large number of molds and relatively high cost of the conventional round expanding device, and has the advantages of light and small structure, simple structure and greatly reduced cost.
Chinese patent No. CN204953582U discloses a pipe fitting internal bracing type rounding machine, which specifically comprises a motor, a frame, an eccentric shaft and a rounding mechanism; the circle adjusting mechanism comprises a connecting rod, a conical rod and a supporting head, the connecting rod is connected with the eccentric shaft, the connecting rod is driven by the eccentric shaft to horizontally reciprocate when the eccentric shaft rotates, the conical rod is arranged at the end of the connecting rod, and the conical section of the conical rod is positioned in the supporting head; this pipe fitting internal stay formula rounding machine can accomplish the interior plastic school circle work of pipe fitting, and the during operation noise is low, and work efficiency is high, and this equipment structure is simple in addition, and the expense is low, has reduced the cost of enterprise.
However, the pipe end rounding mechanisms disclosed in the above two patents are both push-expanding internal support structures, which have the following disadvantages:
1) when in rounding, if the push rod does not extend out of the end part of the rounding head to form torque, the rounding head is tilted to form a cone angle, so that the pipe end forms a bell mouth, and an effective rounding effect cannot be obtained;
2) the push rod forms the effort of two directions during the forward motion, including radial effort and axial effort, radial effort promotes the radial expansion of full circle head, but its axial effort promotes full circle head forward motion, and during the school circle, full circle head receives the forward thrust of push rod, needs firm connection structure side to prevent full circle head and frame separation, uses for a long time, and the full circle head can become lax with being connected of frame promptly, and then influences the precision that the pipe was corrected.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the shaping device for rounding the pipe end of the metal conduit and the inner support assembly thereof, wherein the inner support assembly has high stability, strong load capacity and good pipe end shaping effect.
In order to achieve the purpose, the invention provides the following technical scheme: the inner support assembly comprises a conical head pull rod, a multi-petal inner support die and a guide seat, wherein the multi-petal inner support die forms an inner support body with a cylindrical outer contour, the inner support body penetrates through the guide seat, the front part of the inner support body extends out of the guide seat, and an annular convex ring extends from the rear part of the inner support body and is axially limited by the guide seat through the annular convex ring; the inner supporting body is in clearance fit with the guide seat, so that the multi-flap inner supporting die on the inner supporting body can move along the radial direction of the inner supporting die; the inner conical surface of the multi-petal inner supporting die is combined to form a conical stress cavity, the conical head pull rod is positioned in the stress cavity, the conical head pull rod is provided with an outer conical surface matched with the stress cavity, and the conical head pull rod moves backwards to drive the inner supporting body to expand outwards. For present push away and expand formula internal stay structure, this scheme adopts and draws and expand formula internal stay structure, and during the rounding, the internal stay mould tip atress, the conical head pull rod can play effectual supporting role to the internal stay mould, avoids forming the moment of torsion and is favorable to the rounding of pipe end. Meanwhile, the inner supporting die penetrates through the guide seat and the end part of the roundness correction, when the roundness correction is carried out, the inner supporting die is pulled backwards by the conical head pull rod, the guide seat effectively supports the inner supporting die, the axial acting force of the conical head pull rod is balanced, and the inner supporting die can be prevented from moving backwards.
Preferably, an annular inner cavity structure is formed inside the guide seat, and the annular convex ring is embedded into the annular inner cavity structure so as to axially limit the inner support body on the guide seat.
Preferably, the guide seat is further provided with an elastic element for promoting the inner support body to retract and reset.
Preferably, the elastic part is arranged in the annular inner cavity structure, one end of the elastic part is fixed on the guide seat, and the other end of the elastic part is abutted against the inner support body and gives the inner support body a tendency of inward contraction.
Preferably, the guide holder comprises a guide holder main body and a pressing cover installed on one side of the guide holder main body, the annular inner cavity structure is formed inside the guide holder main body, and the pressing cover is matched with the guide holder main body to axially limit the annular convex ring in the annular inner cavity structure.
Preferably, positioning key grooves are formed in the multi-petal inner supporting die; a limiting groove is formed in the position, corresponding to the positioning key groove, of the pressing cover; the positioning key is embedded in the positioning key groove, and meanwhile, the outer side end of the positioning key is embedded in the limiting groove.
Preferably, the front ends of the multi-petal inner supporting dies are respectively provided with orthopedic sleeves, and the multi-petal orthopedic sleeves are combined into a cylindrical shape and are detachably fixed at the end parts of the inner supporting bodies to be used as orthopedic ends; or the orthopedic sleeve is made of brass or aluminum bronze.
Preferably, the catheter further comprises a tube end sheath, wherein the tube end sheath comprises at least two split sheath bodies; when in rounding, the two protective sleeves are separately formed into a cylinder shape and locked by a fastener, and simultaneously the outer contour of the end of the metal conduit to be rounded is coated, so that the end of the metal conduit is positioned between the conical head pull rod and the end protective sleeve.
Preferably, the fit clearance between the cylindrical outer profile of the multi-petal inner support die and the guide seat is equal to the expandable range of the inner support die.
The shaping device for rounding the pipe end of the metal conduit comprises the inner support assembly of the shaping device for rounding the pipe end of the metal conduit.
In conclusion, the invention has the following beneficial effects:
1. compared with the existing push-expanding type inner supporting structure, the scheme adopts the pull-expanding type inner supporting structure, when in roundness correction, the end part of the inner supporting die is stressed, the conical head pull rod can play an effective supporting role on the inner supporting die, and the torque is prevented from being formed, so that the roundness correction of the pipe end of the conduit is facilitated;
2. the inner supporting die penetrates through the guide seat and the end part of the roundness correction, when the roundness correction is carried out, the inner supporting die is pulled backwards by the pull rod, the guide seat effectively supports the inner supporting die, the axial acting force of the conical head pull rod is balanced, and the inner supporting die can be prevented from moving backwards;
3. the front ends of the multi-petal inner supporting dies are respectively provided with the orthopedic sleeves, the multi-petal orthopedic sleeves are combined into a cylinder shape and are detachably fixed at the end parts of the inner supporting bodies to be used as orthopedic ends, and the orthopedic requirements of pipe ends of different specifications can be met by replacing orthopedic sleeves with different outer diameters;
4. the shaping device also comprises a pipe end sheath which plays a role in protecting the outer contour of the pipe and is beneficial to improving the precision of the roundness correction.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an exploded view of the structure of the present invention;
FIG. 4 is a schematic structural view of the inner supporting mold of the present invention;
FIG. 5 is a schematic view of the working state of the present invention;
fig. 6 is a cross-sectional view of fig. 5.
Reference numerals: 1. an inner support assembly; 101. a conical head pull rod; 102. internally supporting the mold; 10201. a spring mounting hole; 10202. positioning the key slot; 103. an orthopedic sleeve; 104. a spring; 105. a positioning key; 106. a guide seat; 10601. an inner bore; 10602. tightening the screw; 107. a compression cover; 10701. a limiting groove; 10702. a bolt; 108. a force-bearing cavity; 109. a screw; 2. a tube end sheath; 201. the sheath is split; 202. a bolt; 3. a hydraulic cylinder; 301. a piston rod; 302. a nut; 4. a base; 401. a base plate; 402. a riser.
Detailed Description
The invention is further described with reference to the accompanying drawings.
The embodiment discloses a shaping device for rounding the pipe end of a metal conduit, which comprises a base 4, an inner support assembly 1 arranged on the base 4 and a power source, wherein the power source is a hydraulic cylinder 3, the hydraulic cylinder 3 adopts a piston hydraulic cylinder, and the cylinder diameter is matched with the front-back movement range of a conical head pull rod 101 of the inner support assembly 1, as shown in fig. 1, fig. 2 and fig. 3; the base 4 consists of a bottom plate 401 and a vertical plate 402 which are perpendicular to each other, and the internal support component 1 and the hydraulic cylinder 3 are transversely arranged on the base 4, wherein the internal support component 1 is fixed on the bottom plate 401, and the hydraulic cylinder 3 is transversely fixed on the vertical plate 402; the hydraulic cylinder 3 is transversely installed at the rear end side of the inner support assembly 1, a piston rod 301 of the hydraulic cylinder 3 is in threaded connection with the conical head pull rod 101, and a nut 302 is additionally arranged at the joint for fastening and preventing loosening.
As shown in fig. 3 and 4, the inner support assembly 1 includes a conical head pull rod 101, a multi-petal inner support die 102, and a guide seat; the multi-petal inner supporting die 102 forms an inner supporting body with a cylindrical outline, the inner supporting body penetrates through the guide seat, the front part of the inner supporting body extends out of the guide seat, the rear part of the inner supporting body extends to form an annular convex ring and is axially limited by the guide seat through the annular convex ring, the structure of the annular convex ring is that arc-shaped convex blocks are respectively formed on the multi-petal inner supporting die, and the arc-shaped convex blocks on the multi-petal inner supporting die form an annular convex ring with an annular outline; meanwhile, the inner support body is sleeved on the conical head pull rod 101, specifically, a conical stress cavity is formed by combining the inner conical surfaces of the multi-petal inner support die 102, the conical head pull rod 101 is positioned in the stress cavity, and the conical head pull rod 101 is provided with an outer conical surface matched with the stress cavity; in the radial direction, the inner supporting body is in clearance fit with the guide seat 106, so that the multi-petal inner supporting die 102 on the inner supporting body can move along the radial direction of the inner supporting die 102; the conical head pull rod 101 moves back and forth to drive the inner support body to expand or contract outwards, and meanwhile, the fit clearance between the cylindrical outer profile of the multi-petal inner support die 102 and the guide seat 106 is equal to the expandable range of the inner support die 102. The cross section of the stress cavity is gradually reduced or increased from the front to the back, and when the cross section of the stress cavity is gradually increased from the front to the back, the conical head pull rod 101 moves forwards to drive the inner support body to expand outwards; preferably, the cross section of the stress cavity is gradually reduced from the front to the back, the cross section of the conical pull rod 101 is also gradually reduced from the front to the back, and the conical pull rod 101 moves backwards to drive the inner support body to expand outwards, so that a stretching type inner support structure is formed. The rear end of the conical head pull rod is connected with the hydraulic cylinder, the hydraulic cylinder 3 pulls the conical head pull rod 101 to move backwards, the conical head pull rod 101 moves backwards relative to the inner supporting die 102 and enables the inner supporting die 102 to expand outwards, the inner supporting die 102 expands outwards and extrudes the end part of the pipe end, and therefore the end part of the pipe end is subjected to rounding and shaping. During unloading, the hydraulic cylinder 3 pushes the conical head pull rod 101 to move forwards, the inner supporting die 102 retracts inwards towards the center direction, and the guide pipe can be drawn out from the end part of the inner supporting die 102. Compared with the existing push-expanding type inner supporting structure, when the pipe end is rounded, the end part of the inner supporting die 102 of the pull-expanding type inner supporting structure is stressed, the conical head pull rod 101 can effectively support the inner supporting die 102, and torque is prevented from being formed, so that the pipe end is rounded. Meanwhile, the inner supporting die 102 penetrates through the guide seat 106 and the rounding end part, when the inner supporting die 102 is rounded, the inner supporting die 102 is pulled backwards by the conical head pull rod 101, the guide seat 106 effectively supports the inner supporting die 102, the axial acting force of the conical head pull rod 101 is balanced, and the inner supporting die 102 can be prevented from moving backwards. Meanwhile, the shaping device is simple in structure, high in stability, strong in load capacity and good in pipe end shaping effect.
The guide seat comprises a guide seat main body and a pressing cover arranged on one side of the guide seat main body, an annular inner cavity structure is formed inside the guide seat main body, an annular convex ring is embedded into the annular inner cavity structure, the pressing cover (107) is matched with the guide seat main body (106) to axially limit the annular convex ring in the annular inner cavity structure, and then the inner support body is circumferentially limited on the guide seat; thus, the assembly of the inner support body and the guide seat 106 is facilitated. Similarly, in the radial direction, the inner support body is in clearance fit with the guide seat 106, and the annular convex ring is also in clearance fit with the annular inner cavity structure; thereby enabling the multi-petal inner supporting die 102 on the inner supporting body to move along the radial direction of the inner supporting die 102.
The outer contour of the multi-petal inner support die 102 forms a cylinder shape and is arranged in the guide seat 106, and the periphery of the multi-petal inner support die is limited and supported by the elastic piece and the positioning key 105; specifically, the multi-petal inner supporting die 102 is provided with positioning key slots 10202; limiting grooves 10701 are formed in the position, corresponding to the positioning key slot 10202, of the pressing cover 107, and the limiting grooves 10701 are arranged at equal intervals along the inner wall of the pressing cover 107; the positioning key keyway 10202 is embedded with a positioning key 105, and meanwhile, the outer end of the positioning key 105 is embedded into the limit groove 10701 so as to limit the inner support body on the guide seat 106 in the circumferential direction, thereby avoiding circumferential rotation of the inner support body.
Meanwhile, the guide seat is also provided with an elastic piece for promoting the inner support body to retract and reset, and the specific structure of the elastic piece can be referred to as an authorization notice number CN 106825273B; or the elastic piece is arranged in the annular inner cavity structure, one end of the elastic piece is fixed on the guide seat, and the other end of the elastic piece is abutted against the inner support body and gives the inner support body a tendency of inward contraction; wherein, the elastic element is a spring 104; the outer contour of each flap of inner supporting die 102 is provided with a spring mounting hole 10201, the guide seat 106 is provided with an inner hole 10601 corresponding to the spring mounting hole 10201, one end of the spring 104 is embedded into the spring mounting hole 10201 and is abutted against the inner supporting die 102, the other end of the spring 104 is embedded into the inner hole 10601 and is limited in the inner hole 10601 through a set screw 10602, the spring 104 is arranged to support and reset the inner supporting die 102, and the elastic piece is simple in structure and does not need to be supported by an elastic piece support structure.
Preferably, the front ends of the multi-flap inner supporting dies 102 are respectively provided with orthopedic sleeves 103, the multi-flap orthopedic sleeves 103 are combined into a cylindrical shape and detachably fixed at the end parts of the inner supporting bodies to serve as orthopedic ends, the orthopedic sleeves 103 adopted in the scheme are fixed at the orthopedic ends of the inner supporting dies 102 by screws 109, and therefore the requirements of pipe end orthopedic of different specifications are met by replacing the orthopedic sleeves 103 with different outer diameters. The outer diameter of the orthopedic sleeve 103 is smaller than the inner diameter of the end of the orthopedic pipe, and the difference value of the outer diameter and the inner diameter is smaller than the expandable range of the orthopedic device; and the orthopedic sleeve 103 is made of brass or aluminum bronze, so that obvious indentation on the inner surface of the pipe can be prevented.
Further, the shaping device also comprises a pipe end jacket 2, wherein the pipe end jacket 2 comprises at least two jacket split bodies 201, and the jacket split bodies 201 are semicircular; during rounding, the two sheath split bodies 201 form a cylindrical shape and cover the outer contour of the end of the metal conduit to be rounded, so that the end of the metal conduit is positioned between the conical head pull rod 101 and the end sheath 2, meanwhile, two sides of the end sheath 2 are locked by bolts 202, the inner diameter of the end sheath is larger than the required outer diameter of the end of the metal conduit to be rounded, the difference value of the two is the resilience value of the metal conduit to be rounded, and the outer contour of the conduit is protected. The hydraulic cylinder 3 pulls the conical head pull rod 101 to move backwards, the conical head pull rod 101 moves backwards relative to the inner support die 102 to enable the inner support die 102 to drive the orthopedic sleeve 103 to expand outwards, and the orthopedic sleeve 103 and the pipe end sheath 2 jointly act to extrude the end part of the pipe end, so that the end part of the pipe end is subjected to rounding and shaping. When the pipe is unloaded, the hydraulic cylinder 3 pushes the conical head pull rod 101 to move forwards, the inner supporting die 102 contracts towards the center under the action of the spring 104 and drives the orthopedic sleeve 103 to contract, and the outer contour diameter of the orthopedic sleeve 103 is smaller than the inner diameter of the pipe end, so that the guide pipe can be conveniently drawn out.
The mutual contact surfaces of the conical head pull rod 101, the inner supporting die 102, the guide seat 106 and the pressing cover 107 are smooth surfaces, so that the abrasion of the conical surfaces is reduced, the output resistance of the force of the hydraulic cylinder 3 is reduced, and the structural stability is improved.
The number of the inner supporting die 102, the return spring 104, the positioning key 105 and the limiting groove 10701 of the pressing cover 107 of the inner supporting assembly 1 is the same, and the number of the inner supporting die, the return spring 104, the positioning key 105 and the pressing cover is 4 in this embodiment.
As shown in fig. 5 and 6, the orthopedic sleeve 103 and the pipe end sheath 2 are designed according to the specification of the pipe 5 to be round, and the orthopedic sleeve 103 is fixed to the orthopedic end of the internal bracing die 102 by using a screw 109. When in roundness correction, the orthopedic sleeve 103 is arranged at the pipe end of the pipe to be corrected 5, and the 2-piece sheath split bodies 201 are combined into a cylinder shape and cover the outer contour of the pipe end. The hydraulic cylinder 4 pulls the conical head pull rod 101 to move backwards, the conical head pull rod 101 moves backwards relative to the inner supporting die 102 to enable the inner supporting die 102 to drive the orthopedic sleeve 103 to expand outwards to extrude the end part of the pipe end under the combined action of the conical head pull rod 101 and the pipe end sheath 2, and meanwhile, the conical head pull rod 101 plays an effective supporting role on the orthopedic end, so that the end part of the pipe end is subjected to circle-rectifying and shaping treatment. When the pipe is unloaded, the hydraulic cylinder 3 pushes the conical head pull rod 101 to move forwards, the inner supporting die 102 contracts towards the center under the action of the spring 104 and drives the orthopedic sleeve 103 to contract, and the outer contour diameter of the orthopedic sleeve 103 is smaller than the inner diameter of the pipe end, so that the guide pipe can be conveniently drawn out.
The invention provides a shaping device for rounding the pipe end of a metal conduit. The outer diameter of the orthopedic end of the shaping device is adjustable, so that the pipe end can be conveniently subjected to feeding and discharging during shaping, the feeding and discharging time is saved, and the working efficiency is improved. Aiming at the pipe end shaping of the catheters with different specifications, only the orthopedic sleeve 103 and the pipe end sheath 2 need to be replaced, thereby saving the investment of the die cost and reducing the manufacturing cost.
The directions given in the present embodiment are merely for convenience of describing positional relationships between the respective members and the relationship of fitting with each other. The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The inner support assembly of the reshaping device for rounding the pipe end of the metal guide pipe comprises a conical head pull rod (101), a multi-petal inner support die (102) and a guide seat, and is characterized in that the multi-petal inner support die (102) forms an inner support body with a cylindrical outer profile, the inner support body penetrates through the guide seat, the front part of the inner support body extends out of the guide seat, and the rear part of the inner support body extends to form an annular convex ring and is axially limited by the guide seat through the annular convex ring; the inner supporting body is in clearance fit with the guide seat, so that the multi-flap inner supporting die (102) on the inner supporting body can move along the radial direction of the inner supporting die (102); the inner conical surfaces of the multi-petal inner supporting die (102) are combined to form a conical stress cavity (108), the conical head pull rod (101) is located in the stress cavity (108), the conical head pull rod (101) is provided with an outer conical surface matched with the stress cavity (108), and the conical head pull rod (101) moves backwards to drive the inner supporting body to expand outwards.
2. The inner support assembly of the reshaping device for pipe end rounding of the metal guide pipe as claimed in claim 1, wherein an annular inner cavity structure is formed inside the guide seat, and the annular convex ring is embedded into the annular inner cavity structure so as to axially limit the inner support body on the guide seat.
3. The inner support assembly of the reshaping device for rounding the tube end of a metal guide tube as claimed in claim 1, wherein an elastic member for urging the inner support to retract and return is further installed on the guide holder.
4. The inner support assembly of the reshaping device for rounding the tube end of a metal guide tube as claimed in claim 2, wherein the elastic member is arranged in the annular inner cavity structure, one end of the elastic member is fixed on the guide seat, and the other end of the elastic member abuts against the inner support body and gives the inner support body a tendency to retract.
5. The inner support assembly of the reshaping device for pipe end rounding of the metal guide pipe according to claim 1, wherein the guide base comprises a guide base main body (106) and a pressing cover (107) installed on one side of the guide base main body (106), the annular inner cavity structure is formed inside the guide base main body (106), and the pressing cover (107) is matched with the guide base main body (106) to axially limit the annular convex ring in the annular inner cavity structure.
6. The inner support assembly of the reshaping device for rounding the pipe end of the metal guide pipe as claimed in claim 5, wherein the multi-petal inner support die (102) is provided with positioning key slots (10202); a limiting groove (10701) is formed in the position, corresponding to the positioning key groove (10202), of the pressing cover (107); the embedded positioning key (105) that has of positioning key keyway (10202), simultaneously, the outside end embedding of positioning key (105) is in spacing groove (10701).
7. The inner support assembly of the reshaping device for rounding the pipe end of the metal conduit according to claim 1, wherein the front ends of the multi-petal inner support dies (102) are respectively provided with a reshaping sleeve (103), and the multi-petal reshaping sleeves (103) are combined into a cylindrical shape and are detachably fixed at the end part of the inner support body to serve as a reshaping end; or the orthopedic sleeve (103) is made of brass or aluminum bronze.
8. The inner support assembly of the reshaping device for rounding the tube end of a metal catheter according to claim 1, further comprising a tube end sheath (2), wherein the tube end sheath (2) comprises at least two sheath split bodies (201); when in rounding, the two sheath split bodies (201) form a cylinder shape and are locked by a fastener, and simultaneously coat the outer contour of the end of the metal conduit pipe to be rounded, so that the end of the metal conduit pipe is positioned between the conical head pull rod and the pipe end sheath.
9. The inner support assembly of the reshaping device for rounding the pipe end of a metal guide pipe according to claim 1, wherein the fit clearance between the cylindrical outer profile of the multi-petal inner support die (102) and the guide seat (106) is equal to the expandable range of the inner support die (102).
10. The shaping device for rounding the pipe end of the metal conduit is characterized by comprising the inner support assembly of the shaping device for rounding the pipe end of the metal conduit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010600134.2A CN111633089B (en) | 2020-06-28 | 2020-06-28 | Shaping device for rounding pipe end of metal conduit and inner support assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010600134.2A CN111633089B (en) | 2020-06-28 | 2020-06-28 | Shaping device for rounding pipe end of metal conduit and inner support assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111633089A true CN111633089A (en) | 2020-09-08 |
| CN111633089B CN111633089B (en) | 2022-04-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010600134.2A Active CN111633089B (en) | 2020-06-28 | 2020-06-28 | Shaping device for rounding pipe end of metal conduit and inner support assembly thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058956A (en) * | 2020-09-18 | 2020-12-11 | 珠海格力智能装备有限公司 | Shaping mechanism |
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| CN112058956A (en) * | 2020-09-18 | 2020-12-11 | 珠海格力智能装备有限公司 | Shaping mechanism |
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| CN111633089B (en) | 2022-04-15 |
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Address after: 321403 6 Xinyuan Road, Xinbi street, Jinyun, Lishui, Zhejiang Patentee after: Zhejiang Kingmasun Intelligent Manufacturing Co.,Ltd. Address before: 321403 6 Xinyuan Road, Xinbi street, Jinyun, Lishui, Zhejiang Patentee before: ZHEJIANG KING-MAZON MACHINERY Co.,Ltd. |