CN105081096A - Pipe end contraction machining die - Google Patents

Pipe end contraction machining die Download PDF

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Publication number
CN105081096A
CN105081096A CN201510533069.5A CN201510533069A CN105081096A CN 105081096 A CN105081096 A CN 105081096A CN 201510533069 A CN201510533069 A CN 201510533069A CN 105081096 A CN105081096 A CN 105081096A
Authority
CN
China
Prior art keywords
hole
clamping head
pipe
conical
attaching parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510533069.5A
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Chinese (zh)
Inventor
谷毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING WANSI METAL SPECIAL FORMING Co Ltd
Original Assignee
CHONGQING WANSI METAL SPECIAL FORMING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHONGQING WANSI METAL SPECIAL FORMING Co Ltd filed Critical CHONGQING WANSI METAL SPECIAL FORMING Co Ltd
Priority to CN201510533069.5A priority Critical patent/CN105081096A/en
Publication of CN105081096A publication Critical patent/CN105081096A/en
Pending legal-status Critical Current

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Abstract

The invention provides a pipe end contraction machining die. The machining die comprises an outer shell, clamping heads, a driving and connecting assembly, a driving oil cylinder and a rack; a conical through hole is formed in the shell, and grooves are formed in the conical through hole wall; each clamping head comprises a plurality of independent sliding blocks, and the independent sliding blocks form a conical cylinder arranged inside the conical through hole; each sliding block of the corresponding clamping head is provided with a flange, and each flange is matched with the corresponding groove in the conical through hole wall; when all the sliding blocks move towards the small end of the conical through hole, the clamping heads can be fastened; when the clamping heads form the conical cylinder, the center of the end, with the smaller diameter, of each clamping head is provided with a conical hole for compressing a pipe; the clamping heads are driven by the driving oil cylinder and connected through the driving and connecting assembly. When the clamping heads are fastened, a pipe end is stressed for contracting an end opening of the pipe, the clamping heads are contracted synchronously in the moving process, the force application is more stable, and the pipe is prevented from being damaged on account of uneven force application.

Description

Pipe end shrink mouth processing mold
Technical field
The present invention relates to a kind of necking die, particularly relate to a kind of steel tube end part necking die.
Background technology
At present reducing is realized to tubing, main employing machine for shrinking carries out pressure receipts or particular manufacturing craft carries out punching press, machine for shrinking mainly adopts the mode of spinning, spinning is fixed on the mould of spinning machine by dull and stereotyped or hollow blank, while blank is with lathe main axis, with spinning roller or catch up with rod to stress on blank, make it the plastic deformation producing local.Under the feed motion of spinning roller and the rotary motion acting in conjunction of blank, make the plastic deformation of local expand to all surfaces of blank step by step, and be close to mould, complete the rotary pressing processing of part.Spinning is a kind of special manufacturing process.The drawing of various shape rotary body, flange, reducing, the technique such as bulging and crimping can be completed by spin-on process; When relating to some bend pipes, machine for shrinking then can not realize clamping, and bend pipe is rotated; Particular manufacturing craft then needs to be placed on by tubing on patrix or counterdie, is realized the plastic deformation of tubing by the mutual punching press of upper and lower mould, so machine for shrinking and particular manufacturing craft are mainly used for straight tube processing, larger to the restriction of pipe geometry.
Summary of the invention
The technical problem to be solved in the present invention is to provide one and does not limit pipe geometry, the necking die that tubing opposing mold center is motionless in draw process.
For overcoming the above problems, the invention provides a kind of pipe end shrink mouth processing mold, comprising shell, clamping head, drive attaching parts, drive oil cylinder and frame; Described housing has conical through-hole, and be housing conical through-hole, housing conical through-hole wall is provided with groove; Described clamping head comprises polylith separate slider, be combined into taper, be arranged in housing conical through-hole, the slide block of every block clamping head is equipped with convex strangling, this is convex strangles and the groove fit on described housing conical through-hole wall, and the convex cross section of strangling on the slide block of groove on housing conical through-hole wall and clamping head is set to trapezoidal; When described clamping head is combined into taper, the center, one end that its radius is less is provided with bellmouth, clamping head taper hole; Described driving attaching parts are connected with the skid of clamping head, and drive attaching parts to drive clamping head to move forward and backward, and the piston rod of described driving oil cylinder is fixedly connected with driving attaching parts, drives oil cylinder and shell to be fixed on frame.
Workpiece end is placed in clamping head taper hole, starts and drive oil cylinder, stretch out piston rod, promote to drive attaching parts, make driving attaching parts promote clamping head and move in housing conical through-hole, clamping head is shunk, realizes workpiece end reducing; Reverse input hydraulic pressure oil, makes piston rod retract, just can unclamp workpiece, prepares to process next time.Because the convex cross section of strangling on the slide block of the groove on housing conical through-hole wall and clamping head is set to trapezoidal, clamping head is contacted with housing conical through-hole wall all the time, there will not be the slide block of composition clamping head to occur inconsistent phenomenon, make to there will not be distortion when carrying out reducing to workpiece end.
Exert pressure to pipe end because such scheme adopts clamping head to tighten up, realize reducing, do not need tubing to rotate in mould, therefore to pipe geometry not requirement, the pipe end shrink mouth to bend pipe, straight tube can be realized.
Further, described driving attaching parts arrange the U-shaped hole corresponding with the slide block of described clamping head, and the slider tail of clamping head has screwed hole, screws in screwed hole with screw rod, through the U-shaped hole driving attaching parts, and uses nut locking position.This structure is relatively simple, processing, easy to assembly.
Further, the screw rod between described driving attaching parts and the slide block of clamping head is set with a steel pipe, replaces nut with steel pipe, when producing pressure, pressure can be born by steel pipe, preventing thread failure, available protecting screw rod.
Further, clamping head top sliding block is set to eight pieces altogether, is more conducive to uniform force application, and also do not cause structure too complicated.
Accompanying drawing explanation
Fig. 1 is pipe end shrink mouth processing mold sectional view;
Fig. 2 is the A-A sectional drawing of Fig. 1 pipe end shrink mouth processing mold sectional view;
Fig. 3 is the driving attaching parts of pipe end shrink mouth processing mold.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described in detail, so that the technical problem solved design of the present invention, the technical characteristic forming technical scheme and the technique effect that brings have further understands.But, it should be noted that to the explanation of these embodiments be schematic, do not form concrete restriction of the present invention.
From Fig. 1, Fig. 2 Fig. 3, pipe end shrink mouth processing mold is by shell 2, and clamping head 3, drives attaching parts 4, drives oil cylinder 5 and frame 1 to form.
The housing 2 of pipe end shrink mouth processing mold of the present invention has conical through-hole, and be housing conical through-hole 21, housing conical through-hole 21 wall is provided with groove 211; Described clamping head 3 comprises eight pieces of separate slider 31, be combined into taper, be arranged in housing conical through-hole 21, the slide block 31 of every block clamping head is equipped with convexly strangles 311, and this is convex strangles 311 and be trapezoidal with the cross section of groove 211, convexly strangles 311 and coordinates with the groove 211 on described housing conical through-hole wall, slide block can be free to slide convex strangling on 311, and clamping head 3 is contact with housing conical through-hole wall all the time, when slide block 31 all moves to the small end of housing conical through-hole 21, just can realizes clamping head 3 and tighten up; When described clamping head 3 is combined into taper, there is bellmouth at the center, one end that its radius is less, is clamping head taper hole, for placement pipe end; Drive in attaching parts 4 and be provided with the U-shaped hole 44 corresponding with the slide block 31 being combined into clamping head 3, slide block 31 afterbody of clamping head 3 has screwed hole 312, screwed hole 312 is screwed in screw rod 41, and be set with steel pipe 43, through the U-shaped hole 44 driving attaching parts 4, screw rod 41 afterbody nut 42 is spacing, drives the piston rod of oil cylinder 5 to be fixedly connected with driving attaching parts 4, drives oil cylinder 5 and shell 2 to be fixed on frame 1.
Workpiece 8 end is placed in clamping head taper hole, starts and drive oil cylinder 5, make it stretch out piston rod, promote to drive attaching parts to move right, drive the slide block 31 of clamping head 3 to slide in housing conical through-hole 21 inter-sync to the right, realize the clamping of clamping head 3, tubing is exerted pressure, realizes tubing reducing; After completing reducing, driving oil cylinder 5 is retracted piston rod, just can unclamp clamping head, take out workpiece 8, enter the processing to next workpiece.

Claims (4)

1. a pipe end shrink mouth processing mold, comprising: shell, clamping head, drives attaching parts, drives oil cylinder and frame; It is characterized in that, described housing has conical through-hole, be housing conical through-hole, housing conical through-hole wall is provided with groove; Described clamping head comprises polylith separate slider, is combined into taper, is arranged in housing conical through-hole, and the slide block of every block clamping head is equipped with convex strangling, and this is convex strangles with the groove fit on described housing conical through-hole wall in being slidably connected; Convex on groove on housing conical through-hole wall and the slide block of clamping head is strangled, and its cross section is all in trapezoidal; When described clamping head is combined into taper, the center, one end that its radius is less has clamping head taper hole; Described driving attaching parts are connected with the skid of clamping head, and the piston rod of described driving oil cylinder is fixedly connected with driving attaching parts, drives oil cylinder and shell to be fixed on frame.
2. pipe end shrink mouth processing mold according to claim 1, it is characterized in that, described driving attaching parts are provided with the U-shaped hole corresponding with the slide block of described clamping head, and the slider tail of clamping head has screwed hole, drive attaching parts to be connected with screw rod with the slide block of clamping head, nut is spacing.
3. pipe end shrink mouth processing mold according to claim 1, is characterized in that, the screw rod between described driving attaching parts and the slide block of clamping head is set with a steel pipe.
4. pipe end shrink mouth processing mold according to claim 1, it is characterized in that, described clamping head is made up of eight slide blocks altogether.
CN201510533069.5A 2015-08-27 2015-08-27 Pipe end contraction machining die Pending CN105081096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510533069.5A CN105081096A (en) 2015-08-27 2015-08-27 Pipe end contraction machining die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510533069.5A CN105081096A (en) 2015-08-27 2015-08-27 Pipe end contraction machining die

Publications (1)

Publication Number Publication Date
CN105081096A true CN105081096A (en) 2015-11-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510533069.5A Pending CN105081096A (en) 2015-08-27 2015-08-27 Pipe end contraction machining die

Country Status (1)

Country Link
CN (1) CN105081096A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105964798A (en) * 2016-06-12 2016-09-28 苏州天朋精密元器件有限公司 Internal flanging puncher pin
CN105964795A (en) * 2016-06-12 2016-09-28 苏州天朋精密元器件有限公司 Internal flanging puncher pin
CN109108173A (en) * 2018-08-13 2019-01-01 宋丽 A kind of necking tightening device for automobile air-conditioning pipe connection
CN109127927A (en) * 2017-06-15 2019-01-04 宝钢工程技术集团有限公司 Pipe End Throat Machine
CN109663864A (en) * 2018-12-21 2019-04-23 冯光芬 A kind of ductule tip machine particular manufacturing craft
CN112296154A (en) * 2020-09-09 2021-02-02 天津由鑫建筑材料制造有限公司 Metal corrugated pipe forming machine and forming method using forming machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105964798A (en) * 2016-06-12 2016-09-28 苏州天朋精密元器件有限公司 Internal flanging puncher pin
CN105964795A (en) * 2016-06-12 2016-09-28 苏州天朋精密元器件有限公司 Internal flanging puncher pin
CN109127927A (en) * 2017-06-15 2019-01-04 宝钢工程技术集团有限公司 Pipe End Throat Machine
CN109108173A (en) * 2018-08-13 2019-01-01 宋丽 A kind of necking tightening device for automobile air-conditioning pipe connection
CN109108173B (en) * 2018-08-13 2020-11-06 安徽匠桥科技服务有限公司 Necking tightening device for automobile air conditioner pipe connection
CN109663864A (en) * 2018-12-21 2019-04-23 冯光芬 A kind of ductule tip machine particular manufacturing craft
CN109663864B (en) * 2018-12-21 2021-01-12 冯光芬 Special die for small catheter tip machine
CN112296154A (en) * 2020-09-09 2021-02-02 天津由鑫建筑材料制造有限公司 Metal corrugated pipe forming machine and forming method using forming machine

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Application publication date: 20151125