CN100408214C - Expanding apparatus for hydraulic pressure cold drawing machine - Google Patents
Expanding apparatus for hydraulic pressure cold drawing machine Download PDFInfo
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- CN100408214C CN100408214C CNB2006100960618A CN200610096061A CN100408214C CN 100408214 C CN100408214 C CN 100408214C CN B2006100960618 A CNB2006100960618 A CN B2006100960618A CN 200610096061 A CN200610096061 A CN 200610096061A CN 100408214 C CN100408214 C CN 100408214C
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Abstract
The invention discloses a radius expanding device of hydraulic cold drawing machine, which comprises the following parts: pipe-hugging mechanism, inner mold and core rod, wherein the pipe-hugging mechanism contains rack, chassis, pipe-hugging cylinder, sliding board and pipe-hugging roller, the chassis is fixed on two rack ends of rack, the pipe-hugging cylinder is fixed on the chassis, which possesses pushing rod, the sliding board is fixed on the front end of push rod, the roller of pipe-hugging pipe displays indent waist drum shape with indent diameter in consistent with expanded pipe material, the roller of pipe-hugging connects sliding board, which connects chassis, the core rod is pierced in the pipe mould, the inner mold is loaded in the core rod, which fixes the clamp car.
Description
Technical field
The present invention relates to the hydraulic pressure cold drawing machine technical field, especially a kind of expander of hydraulic pressure cold drawing machine.
Background technology
During drawbench draw seamless pipe, the front end of pipe is passed mould, extend in the drawbench jaw and clamp, drawbench pulling pipe carries out tube reducing, subtracts wall pipe by nib then, finally reaches finished size.This drawbench can only carry out tube reducing to pipe, subtract wall, and can not carry out hole enlargement to pipe.And more existing expanding machines, its hole enlargement amount is all less, what have only is as briquetting pressure and the welding stress of eliminating steel pipe, a kind of " expanding machine " disclosed as Chinese patent CN2394734Y, its major function is exactly by dilating device the caliber of steel pipe to be dilated to reach the briquetting pressure of eliminating steel pipe and the purpose of welding stress, this hole enlargement is owing to its objective is briquetting pressure and the welding stress of eliminating steel pipe, therefore, the amount of dilating to caliber is less, and this expanding machine only is applicable to the steel pipe that draw ratio is little.In the market the long seamless precision tube of big caliber, length is in great demand, the particularly stainless steel tube of big caliber, copper pipe etc., but owing to do not have suitable pipe, thereby be difficult to make.
Summary of the invention
Can only carry out tube reducing, subtract wall in order to overcome existing drawbench, can not carry out hole enlargement, and the deficiency that is difficult to make big caliber seamless precision tube, the invention provides a kind of expander of hydraulic pressure cold drawing machine, utilize this expander to carry out hole enlargement, make the long seamless precision tube of big caliber, length pipe.
The technical solution adopted for the present invention to solve the technical problems is: a kind of expander of hydraulic pressure cold drawing machine, has pipe-hugging mechanism, internal mold and core bar, pipe-hugging mechanism has a support, two bases, two pipe-hugging cylinders, four slide plates and two pipe-hugging rollers, base, pipe-hugging cylinder, slide plate and pipe-hugging roller position respectively relatively are arranged on the pipe both sides, base is separately fixed at the support two ends, pipe-hugging cylinder is fixed on the base, pipe-hugging cylinder has push rod, slide plate is fixed on the push rod front end, pipe-hugging roller is the dolioform of indent, the diameter of the tubing after concave surface diameter and the hole enlargement is consistent, pipe-hugging roller and slide plate are rotationally connected, and slide plate and base are slidingly connected, and core bar is located in the pipe, internal mold is contained on the core bar, and core bar is connected with the clamp cart stationary of drawbench.Require to calculate the operating pressure of pipe-hugging cylinder hydraulic system according to clamping force, after pipe is in place, by two pipe-hugging cylinders the pipe cylindrical is clamped, internal mold passes through the pipe endoporus under the pulling force of core bar, clamp dolly, and makes the pipe hole enlargement, when internal mold during by the pipe-hugging cylinder place, the expansionary force that the pipe expansion produces is greater than pipe-hugging cylinder thrust, and the push rod of pipe-hugging cylinder bounces back automatically with the expansion of pipe external diameter under the expansionary force effect, and pipe-hugging roller hugs pipe all the time, neither influence hole enlargement, pipe can be clamped again.
The invention has the beneficial effects as follows, the expander of hydraulic pressure cold drawing machine of the present invention is used on the hydraulic pressure cold drawing machine can carry out hole enlargement to pipe, the hole enlargement amount is big, carry out the tube reducing shaping after the hole enlargement again, can make the internal diameter of seamless precision tube of final finished and external diameter greater than pipe internal diameter and external diameter, be specially adapted to make the long seamless precision tube of big caliber, length.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the vertical view of Fig. 1.
1. supports among the figure, 2. base, 3. pipe-hugging cylinder, 31. push rods, 4. slide plate, 5. pipe-hugging roller, 6. internal mold, 7. core bar.
The specific embodiment
As Fig. 1, the expander of hydraulic pressure cold drawing machine of the present invention shown in Figure 2, has pipe-hugging mechanism, internal mold 6 and core bar 7, pipe-hugging mechanism is fixed on the lathe bed of drawbench, pipe-hugging mechanism has a support 1, two bases 2, two pipe-hugging cylinders 3, four slide plates 4 and two pipe-hugging rollers 5, base 2, pipe-hugging cylinder 3, slide plate 4 and pipe-hugging roller 5 position respectively relatively are arranged on the pipe both sides, base 2 is separately fixed at support 1 two ends, pipe-hugging cylinder 3 is fixed on the base 2, pipe-hugging cylinder 3 has push rod 31, slide plate 4 is fixed on push rod 31 front ends, pipe-hugging roller 5 is the dolioform of indent, and the diameter of the tubing after concave surface diameter and the hole enlargement is consistent, and pipe-hugging roller 5 is rotationally connected with slide plate 4, slide plate 4 is slidingly connected with base 2, core bar 7 is located in the pipe, and internal mold 6 is contained on the core bar 7, and core bar 7 is connected with the clamp cart stationary of drawbench.
Require the operating pressure of the hydraulic system of calculating pipe-hugging cylinder 3 according to clamping force, after pipe is in place, the push rod 31 of two pipe-hugging cylinders 3 of HYDRAULIC CONTROL SYSTEM stretches out, pipe-hugging roller 5 clamps the pipe cylindrical, the pipe front end is by the die holder location of drawbench, internal mold 6 is at core bar 7, the pulling force of the clamp dolly of drawbench is down by the pipe endoporus, and make the pipe hole enlargement, when internal mold 6 passes through pipe-hugging cylinder 3 places, the expansionary force that the pipe expansion produces is greater than pipe-hugging cylinder 3 thrusts, and the push rod 31 of pipe-hugging cylinder 3 bounces back automatically with the expansion of pipe external diameter under the expansionary force effect, and pipe-hugging roller 5 hugs pipe all the time, neither influence hole enlargement, pipe can be clamped again.
During the expander draw length longer pipe material of hydraulic pressure cold drawing machine of the present invention, a plurality of pipe-hugging mechanisms can be set on the lathe bed of drawbench,, improve the linearity of the tubing after the hole enlargement to support and to clamp pipe better.
Claims (1)
1. the expander of a hydraulic pressure cold drawing machine, it is characterized in that: have pipe-hugging mechanism, internal mold (6) and core bar (7), pipe-hugging mechanism has a support (1), two bases (2), two pipe-hugging cylinders (3), four slide plates (4) and two pipe-hugging rollers (5), base (2), pipe-hugging cylinder (3), slide plate (4) and pipe-hugging roller (5) relatively are arranged on the pipe both sides in the position respectively, base (2) is separately fixed at support (1) two ends, pipe-hugging cylinder is fixed on the base (2), pipe-hugging cylinder (3) has push rod (31), slide plate (4) is fixed on push rod (31) front end, pipe-hugging roller (5) is the dolioform of indent, the diameter of the tubing after concave surface diameter and the hole enlargement is consistent, pipe-hugging roller (5) is rotationally connected with slide plate (4), slide plate (4) is slidingly connected with base (2), core bar (7) is located in the pipe, internal mold (6) is contained on the core bar (7), and core bar (7) is connected with the clamp cart stationary of drawbench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100960618A CN100408214C (en) | 2006-09-15 | 2006-09-15 | Expanding apparatus for hydraulic pressure cold drawing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100960618A CN100408214C (en) | 2006-09-15 | 2006-09-15 | Expanding apparatus for hydraulic pressure cold drawing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1919488A CN1919488A (en) | 2007-02-28 |
| CN100408214C true CN100408214C (en) | 2008-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100960618A Active CN100408214C (en) | 2006-09-15 | 2006-09-15 | Expanding apparatus for hydraulic pressure cold drawing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100408214C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836891A (en) * | 2011-06-21 | 2012-12-26 | 高玉树 | Technique for drawing and expanding metal tubes by cold drawing |
| CN103495670A (en) * | 2013-09-03 | 2014-01-08 | 苏州市亿特隆电器有限公司 | Self-locking and supporting mechanism for barrel forming die |
| CN103495649A (en) * | 2013-09-03 | 2014-01-08 | 苏州市亿特隆电器有限公司 | One-time punching die of air conditioner compressor outer shell |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4606212A (en) * | 1984-04-16 | 1986-08-19 | Sanwa Kokan Co., Ltd. | Device for cold drawing seamless metal tubes having upset portions on both ends |
| CN1047229A (en) * | 1990-07-11 | 1990-11-28 | 北京科技大学 | Technology for drawing-rolling circular pipe with long-mandrel rool die |
| CN2183834Y (en) * | 1993-10-14 | 1994-11-30 | 淮南矿业学院 | Hydraulic program-controlling auto pipe-extractor |
| CN2342911Y (en) * | 1998-06-05 | 1999-10-13 | 付丙仲 | Hydraulic two-step propelling tuber |
| CN2363809Y (en) * | 1999-03-18 | 2000-02-16 | 武湘川 | Pipe expander |
| JP2000271630A (en) * | 1999-03-23 | 2000-10-03 | Hitachi Cable Ltd | Metal stock drawing method and its device |
| JP2001193308A (en) * | 2000-01-11 | 2001-07-17 | Maeda Corp | Building structure having parallel multi-story shear wall |
-
2006
- 2006-09-15 CN CNB2006100960618A patent/CN100408214C/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4606212A (en) * | 1984-04-16 | 1986-08-19 | Sanwa Kokan Co., Ltd. | Device for cold drawing seamless metal tubes having upset portions on both ends |
| CN1047229A (en) * | 1990-07-11 | 1990-11-28 | 北京科技大学 | Technology for drawing-rolling circular pipe with long-mandrel rool die |
| CN2183834Y (en) * | 1993-10-14 | 1994-11-30 | 淮南矿业学院 | Hydraulic program-controlling auto pipe-extractor |
| CN2342911Y (en) * | 1998-06-05 | 1999-10-13 | 付丙仲 | Hydraulic two-step propelling tuber |
| CN2363809Y (en) * | 1999-03-18 | 2000-02-16 | 武湘川 | Pipe expander |
| JP2000271630A (en) * | 1999-03-23 | 2000-10-03 | Hitachi Cable Ltd | Metal stock drawing method and its device |
| JP2001193308A (en) * | 2000-01-11 | 2001-07-17 | Maeda Corp | Building structure having parallel multi-story shear wall |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1919488A (en) | 2007-02-28 |
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