CN110560587B - Pipe end forming machine - Google Patents
Pipe end forming machine Download PDFInfo
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- CN110560587B CN110560587B CN201910968098.2A CN201910968098A CN110560587B CN 110560587 B CN110560587 B CN 110560587B CN 201910968098 A CN201910968098 A CN 201910968098A CN 110560587 B CN110560587 B CN 110560587B
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- die
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- pressing block
- inner mold
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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
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
Abstract
The invention belongs to the technical field of pipe fitting forming equipment, and relates to a pipe end forming machine, which comprises: a base; the outer mold structure is arranged on the base and can realize radial expansion or contraction movement; the inner mold structure is arranged at the position of the through hole of the base, which corresponds to the inner ring of the outer mold structure, a workpiece placing station is formed between the outer mold structure and the inner mold structure, and the inner mold structure can be close to or far away from the outer mold structure along the radial direction; the rotary jacking structure is arranged below the base to realize the distraction of an inner mold core of the inner mold structure, and the inner mold core drives the inner mold to be close to the outer mold structure along the radial direction so as to form and process a workpiece; an inner die holder in the rotary jacking structure and a rotary component of the rotary jacking structure are driven to rotate, and the inner die structure is arranged on the inner die holder. The device can realize accurate and reliable processing of workpieces, can be suitable for tubular workpieces of various specifications and models, and has a wide application range.
Description
Technical Field
The invention belongs to the technical field of pipe fitting forming equipment, and relates to a pipe end forming machine.
Background
The pipe end forming equipment is mainly used for pipe fitting forming and has wide application in practice, each valve body of an inner mold of the existing pipe end forming equipment is of an integral structure, and when the pipe end forming equipment works, each valve body of the inner mold is driven by a hydraulic cylinder to move along the radial direction, so that the external support operation of the inner mold is realized; meanwhile, the outer die contracts inwards along the radial direction and is close to the inner die, and the outer die and the inner die are matched with each other to realize the forming and processing operation of the workpiece, so that the structure is complex, and the production and manufacturing cost is high; meanwhile, the synchronous movement of each inner mold flap body needs to be ensured, the action consistency of each hydraulic cylinder needs to be ensured, the overall complexity is increased, and the control process is complex. The existing product has the problem that the inner die can only process parts with a specific specification, and the application range is narrow.
Disclosure of Invention
Aiming at the problems, the invention provides the pipe end forming machine which is ingenious and reasonable in structure, can accurately and reliably process workpieces, can be suitable for tubular workpieces of various specifications and models, and is wide in application range.
According to the technical scheme of the invention: a pipe end forming machine, comprising: a base;
the outer mold structure is arranged on the base and can realize radial expansion or contraction movement;
the inner mold structure is arranged at the position of the through hole of the base, which corresponds to the inner ring of the outer mold structure, a workpiece placing station is formed between the outer mold structure and the inner mold structure, and the inner mold structure can be close to or far away from the outer mold structure along the radial direction;
the rotary jacking structure is arranged below the base to realize the distraction of an inner mold core of the inner mold structure, and the inner mold core drives the inner mold to be close to the outer mold structure along the radial direction so as to form and process a workpiece;
an inner die holder in the rotary jacking structure and a rotary component of the rotary jacking structure are driven to rotate, and the inner die structure is arranged on the inner die holder.
As a further improvement of the invention, the outer mold structure comprises a plurality of press block seats which are enclosed to form a circumference shape, the inner arc surface of each press block seat is fixedly connected with a cushion block, the inner arc surface of each cushion block is fixedly connected with an arc-shaped outer mold, each cushion block is enclosed to form a circumference shape, and each outer mold is enclosed to form a circumference shape; every the inboard of external mold all is provided with the shaping groove, and each shaping groove encloses together to be the annular, every the briquetting seat all can be along radially removing, interconnect between two adjacent briquetting seats.
As a further improvement of the invention, two sides of each pressing block seat along the circumferential direction are provided with pressing block seat connecting grooves, and two adjacent pressing block seat connecting grooves are connected through a soft connecting piece; the inner side cambered surface of the pressing block seat is provided with a pressing block seat clamping groove, and the cushion block protruding part of the cushion block is arranged in the pressing block seat clamping groove in a matched mode and is fixedly connected through a pin.
As a further improvement of the invention, a cushion block clamping groove is formed in the cambered surface of the inner side of the cushion block, and an outer mold protruding part of the outer mold is arranged in the cushion block clamping groove in a matched manner and is fixedly connected through a pin; and a convex block is formed in the middle of the outer cambered surface of the pressing block seat, and mounting holes are respectively formed in the pressing block seat corresponding to the two sides of the convex block.
As a further improvement of the invention, the inner mold structure comprises a circumferential inner mold surrounded by a plurality of lobes, the inner side cambered surface of each lobe of the inner mold is fixedly connected with an inner mold core of one lobe, and the rotation center of the inner mold core of the plurality of lobes forms an inner conical surface with a small inner diameter at the upper part and a large inner diameter at the lower part; the surface of interior mold core is equipped with interior mold core draw-in groove, the inboard centre form bellying that sets up of centre form with interior mold core draw-in groove cooperatees, and centre form bellying passes through pin fastening connection with interior mold core draw-in groove, the circumference surface of centre form is equipped with first circumference portion and second circumference portion, and wherein the circumference surface of second circumference portion sets up the bead.
As a further improvement of the invention, a first ring plate and a second ring plate are arranged at the lower part of the circumferential surface of the inner mold core, and a ring groove is formed between the first ring plate and the second ring plate.
As a further improvement of the present invention, the outer diameter of the first circumferential portion is larger than the outer diameter of the second circumferential portion; the middle of the surface of the convex rib is in arc transition to the two sides.
As a further improvement of the invention, the rotary jacking structure comprises a frame mounting plate, an inner mold mounting plate is fixedly arranged above the frame mounting plate, an inner ring of the inner mold mounting plate is rotatably provided with an inner mold base, a plurality of circumferentially enclosed inner molds are arranged on the upper surface of the inner mold base, a jacking oil cylinder is arranged on the bottom surface of the inner mold base, the end of a piston rod of the jacking oil cylinder is connected with a conical rod, and the outer conical surface of the conical rod is matched with the inner conical surface of the inner mold base; a rotary oil cylinder is installed on the rack installation plate, a rack is fixed on the bottom surface of the inner die holder, and a gear at the piston rod end of the rotary oil cylinder is meshed with the rack.
The invention has the technical effects that: the product of the invention has ingenious and reasonable structure, the inner mold and the outer mold which are mutually matched and act are arranged on the plane, so that the mutual matching and acting of the inner mold and the outer mold in the horizontal direction can be realized, and the purpose of forming and processing a workpiece is realized; meanwhile, the purpose of being suitable for workpieces of various specifications and models can be achieved by arranging a structure with the cushion block matched with the outer die and the pressing block seat and a structure with the inner die matched with the inner die core.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the outer mold structure.
Fig. 3 is a sectional view taken along line C-C in fig. 2.
Fig. 4 is a perspective view of an outer mold structure.
Figure 5 is a front view of the inner mold structure.
Fig. 6 is a sectional view taken along line E-E of fig. 5.
Fig. 7 is a perspective view of the inner mold structure.
Fig. 8 is a front view of the swivel jacking structure.
Fig. 9 is a cross-sectional view taken along line D-D of fig. 8.
Fig. 10 is a side view of the rotating jacking structure.
Fig. 11 is a perspective view of the swivel jacking structure.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In fig. 1 to 11, the die comprises a base 100, an outer die structure 200, a traverse cylinder 210, a press block base 220, a cushion block 230, a cushion block clamping groove 231, an outer die 240, a press block base connecting groove 250, a forming groove 260, a mounting hole 270, an inner die structure 300, an inner die 310, an inner die boss 311, a first circumferential portion 312, a second circumferential portion 313, a rib 314, an inner die core 320, an inner conical surface 321, a first annular plate 322, a second annular plate 323, an inner die core clamping groove 324, a rotary jacking structure 400, a jacking cylinder 410, a conical rod 420, a guide rod 430, an inner die base 440, a rack mounting plate 450, a rotary bearing 460, an inner die mounting plate 470, a gear 480, a rack 490 and the like.
As shown in fig. 1, the present invention is a pipe end forming machine, comprising: a base 100;
an outer mold structure 200 disposed on the base 100 and capable of performing a radial expansion or contraction motion;
the inner mold structure 300 is arranged at the inner ring of the outer mold structure 200 and corresponds to the through hole position of the base 100, a workpiece placing station is formed between the outer mold structure 200 and the inner mold structure 300, and the inner mold structure 300 can be close to or far away from the outer mold structure 200 along the radial direction;
the rotary jacking structure 400 is arranged below the base 100 to realize the expansion of the inner mold core 320 of the inner mold structure 300, and the inner mold core 320 drives the inner mold 310 to be close to the outer mold structure 200 along the radial direction so as to form and process a workpiece;
the inner mold base 440 of the rotary jacking structure 400 and the rotary component of the rotary jacking structure 400 are driven to rotate, and the inner mold structure 300 is disposed on the inner mold base 440.
As shown in fig. 2 to 4, the outer mold structure 200 includes a plurality of press block seats 220 that are enclosed to form a circumference shape, the inner arc surface of each press block seat 220 is respectively fastened and connected with a cushion block 230, the inner arc surface of the cushion block 230 is fastened and connected with an arc-shaped outer mold 240, each cushion block 230 is enclosed to form a circumference shape, and each outer mold 240 is enclosed to form a circumference shape; each outer die 240 is provided with a forming groove 260 on the inner side, each forming groove 260 is enclosed to form a ring groove, each pressure block seat 220 can move along the radial direction, and two adjacent pressure block seats 220 are connected with each other.
Two sides of each pressing block seat 220 along the circumferential direction are provided with pressing block seat connecting grooves 250, and two adjacent pressing block seat connecting grooves 250 are connected through a soft connecting piece; the inner arc surface of the pressing block seat 220 is provided with a pressing block seat clamping groove 221, and the cushion block protruding part 231 of the cushion block 230 is arranged in the pressing block seat clamping groove 221 in a matched mode and is fixedly connected through a pin.
A cushion block clamping groove 231 is formed in the inner arc surface of the cushion block 230, and an outer mold protruding part 241 of the outer mold 240 is arranged in the cushion block clamping groove 231 in a matched mode and is fixedly connected through a pin; a convex block is formed in the middle of the outer arc surface of the pressing block seat 220, and mounting holes 270 are respectively formed in the pressing block seat 220 corresponding to two sides of the convex block.
In specific application, a flexible connecting member, such as rubber, plastic, or the like, is disposed between two adjacent pressing block seat grooves 250 to ensure that the plurality of pressing block seats 220 move radially and synchronously, and a group of traverse cylinders 210 is respectively mounted on the base 100 corresponding to each mounting hole 270; eight pressing block seats 220 are arranged along the circumferential direction in the product, and 16 transverse moving oil cylinders 210 are arranged by matching with the eight pressing block seats 220.
It is understood that, in order to ensure that the pressing block holder 220 can reliably move in the radial direction, the base 100 is provided with a guide groove, and the pressing block holder 220 is provided with a guide post, which is fittingly arranged in the guide groove.
As shown in fig. 5 to 7, the inner mold structure 300 includes a circumferential inner mold 310 with a plurality of lobes, an inner curved surface of each lobe of the inner mold 310 is fixedly connected to a lobe inner mold core 320, and an inner conical surface 321 with a small upper inner diameter and a large lower inner diameter is formed at a rotation center of the lobe inner mold core 320; the outer surface of the inner mold core 320 is provided with an inner mold core clamping groove 324, an inner mold protruding portion 311 arranged on the inner side of the inner mold 310 is matched with the inner mold core clamping groove 324, the inner mold protruding portion 311 is fixedly connected with the inner mold core clamping groove 324 through a pin, the circumferential surface of the inner mold 310 is provided with a first circumferential portion 312 and a second circumferential portion 313, and the circumferential surface of the second circumferential portion 313 is provided with a convex rib 314.
The inner mold core 320 is provided with a first annular plate 322 and a second annular plate 323 at the lower part of the circumferential surface, and an annular groove is formed between the first annular plate 322 and the second annular plate 323.
The outer diameter of the first circumferential portion 312 is larger than the outer diameter of the second circumferential portion 313; the middle of the surface of the convex rib 314 is in arc transition to the two sides.
As shown in fig. 8 to 11, the rotary jacking structure 400 includes a frame mounting plate 450, an inner mold mounting plate 470 is fixedly disposed above the frame mounting plate 450, an inner mold seat 440 is rotatably disposed on an inner ring of the inner mold mounting plate 470, a plurality of circumferentially enclosed inner molds 310 are disposed on an upper surface of the inner mold seat 440, a jacking cylinder 410 is mounted on a bottom surface of the inner mold seat 440, a piston rod end of the jacking cylinder 410 is connected to a conical rod 420, and an outer conical surface of the conical rod 420 is matched with an inner conical surface 321 of the inner mold core 320; the rack mounting plate 450 is provided with a rotary oil cylinder 451, the bottom surface of the inner die holder 440 is provided with a rack 490, and a gear 480 at the piston rod end of the rotary oil cylinder 451 is meshed with the rack 490.
The lift cylinder 410 is mounted to the bottom surface of the inner mold mounting plate 470 by a guide rod 430.
The outer surface of the inner mold core 320 is provided with a clamping groove, and the inner surface of the inner mold 310 is provided with a bulge matched with and fixedly connected with the clamping groove of the inner mold core 320.
The inner die 310 includes a first circumferential portion 312, a second circumferential portion 313, and a circumferential surface of the first circumferential portion 312 is provided with a ring-shaped rib 314 to press the workpiece.
The outer diameter of the first circumferential portion 312 is larger than that of the second circumferential portion 313, and an upper end surface of the second circumferential portion 313 forms a resting step to place a workpiece. A rotary bearing 460 is arranged between the inner die holder 440 and the inner die mounting plate 470, so that the inner die holder 440 can reliably and freely rotate during working. .
The product of the invention is in operation: firstly, a workpiece to be machined is placed between the inner die structure 300 and the outer die structure 200, after the workpiece is placed in place, the inner die structure 300 performs outward supporting motion along the radial direction, the outer die structure 200 moves inwards along the radial direction, the inner die structure 300 is matched with the outer die structure 200 to realize the forming machining of the workpiece, and the convex edge 314 on the surface of the inner die structure 300 can realize the propping and outward supporting of the inner wall of the workpiece until the workpiece is tightly supported into the forming groove 260, so that the workpiece is formed. Because the outer die structure 200 and the inner die structure 300 in the invention are both multi-petal structures, the problem of unreliable forming exists at the joint of two adjacent petal bodies in the process of extrusion forming of workpieces. The rotating action process is as follows: the rotary oil cylinder 451 drives the gear 480 to rotate, the gear 480 drives the rack 490 to rotate, the rack 490 drives the inner die holder 440 to rotate, the inner die holder 440 drives the inner die 310 and the inner die core 320 to rotate, and the convex edge 314 performs rounding processing on the forming groove of the workpiece.
In the invention, the outer supporting action of the inner mold 310 is realized by driving the conical rods 420 to move upwards by the lifting oil cylinders 410, the outer conical surfaces at the upper parts of the conical rods 420 are matched with the inner conical surfaces 321 formed at the inner sides of the inner mold cores 320, when the inner mold cores 320 move outwards along the radial direction, the inner mold 310 is driven to move outwards synchronously, and the convex ribs 314 realize the outer supporting action on the inner wall of a workpiece; meanwhile, the traverse cylinder 210 drives the pressing block seat 220, and the pressing block seat 220 drives the outer mold 240 to move radially inward through the cushion block 230, so that the workpiece is pressed from outside to inside.
Claims (4)
1. A pipe end forming machine, comprising: a base (100);
an outer mold structure (200) provided on the base (100) and capable of radial expansion or contraction movement;
the inner die structure (300) is arranged at the inner ring of the outer die structure (200) and corresponds to the through hole position of the base (100), a workpiece placing station is formed between the outer die structure (200) and the inner die structure (300), and the inner die structure (300) can be close to or far away from the outer die structure (200) along the radial direction;
the rotary jacking structure (400) is arranged below the base (100) to realize the expansion of an inner mold core (320) of the inner mold structure (300), and the inner mold core (320) drives the inner mold (310) to be close to the outer mold structure (200) along the radial direction so as to form and process a workpiece;
an inner die holder (440) in the rotary jacking structure (400) and a rotary component of the rotary jacking structure (400) are driven to rotate, and the inner die structure (300) is arranged on the inner die holder (440);
the outer die structure (200) comprises a plurality of pressing block seats (220) which are enclosed to form a circumference shape, the inner side cambered surface of each pressing block seat (220) is fixedly connected with a cushion block (230) respectively, the inner side cambered surface of each cushion block (230) is fixedly connected with an arc-shaped outer die (240), each cushion block (230) is enclosed to form a circumference shape, and each outer die (240) is enclosed to form a circumference shape; the inner side of each outer die (240) is provided with a forming groove (260), each forming groove (260) is enclosed to form a ring groove, each pressure block seat (220) can move along the radial direction, and two adjacent pressure block seats (220) are connected with each other;
two sides of each pressing block seat (220) along the circumferential direction are provided with pressing block seat connecting grooves (250), and two adjacent pressing block seat connecting grooves (250) are connected through a soft connecting piece; a pressing block seat clamping groove (221) is formed in the inner arc surface of the pressing block seat (220), and a cushion block protruding portion (231) of the cushion block (230) is arranged in the pressing block seat clamping groove (221) in a matched mode and is fixedly connected through a pin;
a cushion block clamping groove (231) is formed in the arc surface of the inner side of the cushion block (230), and an outer mold protruding part (241) of the outer mold (240) is arranged in the cushion block clamping groove (231) in a matched mode and is fixedly connected through a pin; a bump is formed in the middle of the outer arc surface of the pressing block seat (220), and mounting holes (270) are respectively formed in the pressing block seat (220) corresponding to the two sides of the bump;
the inner mold structure (300) comprises a circumferential inner mold (310) with a plurality of sections, the inner side cambered surface of each section of the inner mold (310) is fixedly connected with an inner mold core (320), and the rotary center of the inner mold core (320) forms an inner conical surface (321) with a small upper inner diameter and a large lower inner diameter; the surface of interior mold core (320) is equipped with interior mold core draw-in groove (324), centre form bellying (311) that centre form (310) inboard set up with interior mold core draw-in groove (324) cooperate, centre form bellying (311) and interior mold core draw-in groove (324) are through pin fastening connection, the circumferential surface of centre form (310) is equipped with first circumference portion (312) and second circumference portion (313), and wherein the circumferential surface of second circumference portion (313) sets up bead (314).
2. The pipe end forming machine of claim 1 wherein: a first annular plate (322) and a second annular plate (323) are arranged on the lower portion of the circumferential surface of the inner mold core (320), and an annular groove is formed between the first annular plate (322) and the second annular plate (323).
3. The pipe end forming machine of claim 1 wherein: the outer diameter of the first circumferential portion (312) is greater than the outer diameter of the second circumferential portion (313); the middle of the surface of the convex rib (314) is in arc transition to the two sides.
4. The pipe end forming machine of claim 1 wherein: the rotary jacking structure (400) comprises a rack mounting plate (450), an inner die mounting plate (470) is fixedly arranged above the rack mounting plate (450), an inner die holder (440) is arranged on the inner ring of the inner die mounting plate (470) in a rotating manner, a plurality of inner dies (310) which are enclosed in a circumferential shape are arranged on the upper surface of the inner die holder (440), a jacking oil cylinder (410) is arranged on the bottom surface of the inner die holder (440), the piston rod end of the jacking oil cylinder (410) is connected with a conical rod (420), and the outer conical surface of the conical rod (420) is matched with the inner conical surface (321) of the inner die core (320; a rotary oil cylinder (451) is arranged on the rack mounting plate (450), a rack (490) is fixed on the bottom surface of the inner die base (440), and a gear (480) at the piston rod end of the rotary oil cylinder (451) is meshed with the rack (490).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910968098.2A CN110560587B (en) | 2019-10-12 | 2019-10-12 | Pipe end forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910968098.2A CN110560587B (en) | 2019-10-12 | 2019-10-12 | Pipe end forming machine |
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| Publication Number | Publication Date |
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| CN110560587A CN110560587A (en) | 2019-12-13 |
| CN110560587B true CN110560587B (en) | 2021-02-09 |
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| CN201910968098.2A Active CN110560587B (en) | 2019-10-12 | 2019-10-12 | Pipe end forming machine |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110935745B (en) * | 2019-12-19 | 2021-11-12 | 楼尚精密机械（上海）有限公司 | Pipe end forming machine |
| CN111069448B (en) * | 2019-12-19 | 2021-09-14 | 楼尚精密机械（上海）有限公司 | Technological method for large pipe hump equipment |
| CN111530957A (en) * | 2020-04-15 | 2020-08-14 | 江苏首华智能装备有限公司 | Machining device for hump pipe |
| CN111545593A (en) * | 2020-04-15 | 2020-08-18 | 江苏首华智能装备有限公司 | Pipe diameter machining method |
| CN111545592A (en) * | 2020-04-15 | 2020-08-18 | 江苏首华智能装备有限公司 | Pipe diameter machining system |
| CN112091067A (en) * | 2020-08-17 | 2020-12-18 | 大连理工大学 | Combined core mold for continuous lamination laying of foil strips |
| CN112238189B (en) * | 2020-09-27 | 2022-11-29 | 山东济容热工科技有限公司 | Heat exchange pipe reaming device |
| CN114011965A (en) * | 2021-10-08 | 2022-02-08 | 福建意格机械设备有限公司 | Integrated forming device for metal cylinder |
| CN114749876B (en) * | 2022-05-20 | 2022-10-28 | 北京钢研高纳科技股份有限公司 | Ti 2 Preparation method of large-scale special-shaped casing ring piece made of AlNb alloy |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201279555Y (en) * | 2008-10-28 | 2009-07-29 | 山东法因数控机械股份有限公司 | Stretching rotating mechanism of cylinder workpiece |
| KR101090607B1 (en) * | 2009-05-08 | 2011-12-08 | 현대하이스코 주식회사 | Error adjustable pipe enlarging mold device |
| CN103182459A (en) * | 2013-03-21 | 2013-07-03 | 镇江市恒源汽车零部件有限公司 | Pipe fitting sizing mould |
| CN103658215B (en) * | 2013-11-22 | 2016-01-27 | 燕山大学 | Integral outer ring's self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology |
| CN206702103U (en) * | 2017-01-24 | 2017-12-05 | 宁波菲力克汽配有限公司 | Port forming machine |
| CN206500527U (en) * | 2017-01-24 | 2017-09-19 | 宁波菲力克汽配有限公司 | Mouth of pipe processing unit (plant) |
| CN207899997U (en) * | 2017-12-23 | 2018-09-25 | 无锡威孚力达催化净化器有限责任公司 | A kind of internal expansion type pipe end rises muscle mode structure |
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