CN1269587C - Inner roll forming method and apparatus for knotted metal pipe - Google Patents
Inner roll forming method and apparatus for knotted metal pipe Download PDFInfo
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- CN1269587C CN1269587C CN 200410014792 CN200410014792A CN1269587C CN 1269587 C CN1269587 C CN 1269587C CN 200410014792 CN200410014792 CN 200410014792 CN 200410014792 A CN200410014792 A CN 200410014792A CN 1269587 C CN1269587 C CN 1269587C
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- roller
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- laemodipodiform
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- metal pipe
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Abstract
The present invention relates to an inner roll extrusion molding method and a device for bamboo-shaped metal pipes. The device is characterized in that a pair of imitative bamboo-shaped concave moulds is tightly attached to the outer wall of a metal pipe; a group of imitative bamboo-shaped convex rollers is uniformly distributed along the periphery of the inner wall of the metal pipe; a cam shaft is arranged in the center of the metal pipe; when a cam rotates in the positive direction, a slide way of a roller is pushed to move outwards to be in contact with the inner wall of the metal pipe by the arc of the surface of the cam, the rollers are forced to roll on the inner wall of the metal pipe, and the walls of the metal pipe are outwards plumped and deformed until the roller is completely inosculated with the concave moulds; when the cam rotates in the negative direction, the surface of the cam leaves space for a shaft of the roller, and the shaft of the roller and the roller have return space in the radial direction. The present invention has the advantages that the walls of the metal pipe have no cutting guide scratch in molding, a method of inner roll extrusion and outer explorator is adopted, processing quality is high, appearance and outline are clear, and the fidelity of an imitative bamboo shape is high; the present invention has the advantages of artful conception, simple processing equipment and low cost; long and thin pipe materials are processed for the imitative bamboo shape, the smallest pipe diameter is 20mm and the maximum length exceeds 6m. The present invention is a kind of innovation and breakthrough in the technical field of the present invention.
Description
Technical field
The present invention relates to a kind of processing method and device of laemodipodiform metal tube, be specifically related to a kind of method and device that metal straight pipe is processed into ring shape hollow tube by interior roll forming.Described metal tube mainly comprises tubing such as aluminum pipe, copper pipe and steel pipe, especially at aluminum pipe.
Background technology
Return Piao and return really modern's a kind of new pursuit.Bamboo with its very dial, delicate, the simple and tasteful favor that is subjected to personage of all times deeply, people like adopting bamboo to work out various adornments or daily necessities, showing its culture and mastery, bamboo fence is exactly wherein a kind of.But because bursting of natural resources is weary, cuts down bamboo in a large number and not only can destroy the ecological balance, and bring harm for people's living environment.
Along with the development of social progress and technology, at home and abroad in the decoration market, the industrial products of imitative bamboo occur in a large number at present, and wherein the most frequently used is the imitative bamboo products of plastics.This goods are popular in Japan and Southeast Asia one band country.But can bring severe contamination to environment owing to handle the waste and old product of plastics, so in recent years, many countries begin these class plastic products are limited.Thereby the laemodipodiform aluminum pipe has just become the better selection of substituted for plastic bamboo trunk.
In the prior art, the aluminium alloy hollow pipe is processed into the laemodipodiform aluminum pipe two kinds of methods usually, and first kind is the hydraulic expanding type method, promptly utilize the hydraulic buckling principle, to the pipe inward turning hydraulic pressure that adds high pressure, cooperate with model outside the pipe by the extruding of expanding, make tube wall deformation well-thought-out plan nodular.This method seal request height, therefore the production equipment complexity is seldom used in the practice.Second kind is the rubber type method that expands, and is about to block rubber and inserts in the aluminum pipe, and the extruding by two ends makes the block rubber lateral expansion cooperate with pipe model outward, forces tube wall deformation well-thought-out plan nodular.This method must provide enough extruding forces, otherwise distortion may be not in place, and in addition, block rubber is too thick, can cause lateral expansion power deficiency, too thin difficult maintenance accurate positioning.Above-mentioned two kinds of methods all are to utilize interior expansion principle to cooperate with the pipe external model by diffusion to make tube wall deformation well-thought-out plan nodular.But the shortcoming of these class methods is: 1, the imitative ring difficulty of processing for the big aluminium alloy hollow tubing of minor diameter slenderness ratio is bigger; 2, the appearance profile of imitative ring is of low quality, and especially to imitate the fidelity of ring when outer lug is higher relatively poor when ring; 3, equipment and mold complex structure, cost is higher.
The interior method for rolling and molding and the device that the purpose of this invention is to provide a kind of new metal tube laemodipodiform.This method and device are not only an economy but also suitable machining process and device, are particularly suitable for processing the big metal hollow tubular product of minor diameter slenderness ratio.
Summary of the invention
For achieving the above object, the technical scheme that the inventive method adopts is: a kind of interior method for rolling and molding of metal tube laemodipodiform, and its content is:
(1), at the processed position in the hollow metal straight tube outside, be close to the pipe outer wall is provided with a secondary imitative laemodipodiform around circumferencial direction matrix mould;
(2), at the inboard corresponding position of hollow metal straight tube, along the inside pipe wall circumferencial direction convex roller of one group of imitative laemodipodiform is set evenly, each roller is by a roller shaft rotating support; The center is provided with a camshaft in pipe, in camshaft forward rotation process, utilize cam face to relatively rotate the variation of the size and Orientation of center vector, promoting each roller shaft earlier outwards moves radially, each roller is contacted with inside pipe wall, drive the roller shaft revolution then, force roller roll extrusion on inside pipe wall, make tube wall outwards heave distortion, until fitting like a glove with the matrix mould; In the backward rotation process, cam face is made way for roller shaft, makes the related roller of roller shaft that the space of radially returning be arranged.
Related content in the technique scheme is explained as follows:
1, in the such scheme, the convex roller of described one group of imitative laemodipodiform is formed by three at least, and at the even cloth of circumferencial direction.
2, in the such scheme, for the ease of operation, above-mentioned matrix mould can be designed to be put together by two half modules up and down, wherein, in two half modules, one fixing, another activity up and down.
For achieving the above object, the technical scheme that apparatus of the present invention adopt is: a kind of interior roll forming device of metal tube laemodipodiform comprises:
The matrix mould of one secondary imitative laemodipodiform, this matrix mould has a cylindrical inner mold face, and the matrix die cavity of imitative laemodipodiform is set around circumferencial direction on the barrel of interior die face;
An interior roll extrusion plug, this plug mainly by roller, roller shaft, roll frame, camshaft constitutes, rolling frame is a hollow stent, uniform at least three rollers of the circumferential outer rim of its support body, each roller is by a roller shaft rotating support, the roller shaft two ends are located in and are rolled in the chute set on the frame, and roller is arranged in and rolls the circumferential cavity of frame, and the wheel rim of roller is provided with imitative ring convex tendon; Camshaft is made of cam and axis body two parts, and wherein, cam places in the cavity that rolls frame, and cam pin pair roller axle is provided with cambered surface or inclined-plane, and this cambered surface or inclined-plane act on the roller shaft two ends simultaneously; Cambered surface or inclined-plane relatively rotate the vector size and Orientation at center, and the size of vector increases when satisfying forward rotation, the variation that reduces when oppositely changeing.
Related content in the technique scheme is explained as follows:
1, in the such scheme, two imitative ring convex tendons are arranged on the wheel rim of described roller, wherein, in two imitative ring convex tendons, one big, and another is little, and this design can make the imitative ring of roll extrusion more true to nature.
2,, the matrix mould is designed to be put together by two half modules up and down for the ease of operation.
3, in the such scheme, described to roll chute set on the frame be skewed slot, because the direction and the roller shaft glide direction of roll extrusion are more reasonable, can make the roll extrusion better effects if of roller like this.Certainly, chute adopts radially that straight trough also is fine.
4, in the such scheme, can enough process longer metal tube in order to make the roll extrusion plug, can add a driving shaft at the cam axle head, this driving shaft is fixedlyed connected with the axis body of camshaft.
5, in the such scheme, rotate the roll extrusion plug and can adopt manual and motor-driven dual mode, wherein, can motor be set at the driving shaft other end when motor-driven, this motor is connected with driving shaft through decelerator.
Operation principle of the present invention is: with metal straight pipe, as aluminum pipe, be enclosed within (this moment, roller should be in the indentation state) on the interior roll extrusion plug, the matrix mould of one secondary imitative laemodipodiform is installed at outside the aluminum pipe, the location compresses, make aluminum pipe, interior roll extrusion plug and matrix mould relative fixed, wherein, interior roll extrusion plug and roller align with the imitative ring matrix chamber on the matrix mould inner mould face.Forward rotation camshaft, cambered surface on the cam outer rim or inclined-plane promote each roller shaft simultaneously and move (roller shaft drives roller and progressively moved to a point by the b point, sees shown in Figure 3) laterally along chute, drive each roller and expand outwardly.When roller is expanded to a certain degree, contact with the aluminum pipe inwall, then camshaft drives roller shaft and rolls the revolution of frame forward, and roller touches the aluminum pipe inwall and promptly begins roll extrusion, makes tube wall outwards heave distortion, until fitting like a glove with the matrix mould.After finishing roll extrusion, the backward rotation camshaft, cam face is made way for roller shaft, (roller shaft drives roller and is resetted to the b point by a point in the space that the related roller of roller shaft is had radially return, see shown in Figure 3), can extract interior roll extrusion plug out this moment, finishes a ring moulding.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1, roll extrusion added outer pattern method in the present invention adopted, and tube wall does not have any cutting scar in the forming process, the crudy height, and appearance profile is clear, the fidelity height of imitative laemodipodiform.Can in process, not scratch and cut pipe material inner wall, make the tube wall attenuation or because of existing smear metal to make ring heave distortion.
2, the present invention is skillfully constructed, and process equipment is simple, and cost is low, and is safe and reliable.
3, the inventive method not only can be processed into short tube laemodipodiform tubing, the more important thing is and can imitate laemodipodiform processing to elongated tubular.This is a kind of innovation in the art and breaks through.Calculate according to theory, it is 20mm that the present invention can add minimum pipe, and maximum length surpasses the above aluminium tube of 6m.
4, the inventive method is fit to the higher annular laemodipodiform structure of processing projection.
Description of drawings
Accompanying drawing 1 is roll forming schematic diagram in the present invention;
Accompanying drawing 2 is rolling device structure cutaway view in the present invention;
Accompanying drawing 3 is roll extrusion in the present invention and oblique chute schematic diagram;
Accompanying drawing 4 is the imitative laemodipodiform aluminum pipe outline drawing of roll forming of the present invention.
In the above accompanying drawing: 1, roller 2, roller shaft; 3, camshaft 4, upper mold section; 5, female die; 6, roll frame; 7, end cap; 8, aluminum pipe; 9, cavity; 10, screw; 11, flange; 12, cambered surface; 13, chute.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: referring to attached illustrated in figures 1 and 2, and a kind of interior method for rolling and molding of aluminum pipe laemodipodiform, its content is:
(1), at the processed position in hollow aluminum pipe 8 outsides, be close to the pipe outer wall is provided with a secondary imitative laemodipodiform around circumferencial direction matrix mould.The matrix mould is put together by two half modules 4,5 up and down, and wherein, female die 5 is fixing, upper mold section 4 activity amalgamations.
(2), at hollow aluminum pipe 8 inboard corresponding positions, along the inside pipe wall circumferencial direction convex roller 1 of three imitative laemodipodiforms is set evenly, each roller 1 is by roller shaft 2 rotating supports; The center is provided with a camshaft 3 in pipe, in camshaft 3 forward rotation processes, utilize cam face to relatively rotate the variation of the size and Orientation of center vector, promoting each roller shaft 2 earlier outwards moves radially, each roller 1 is contacted with inside pipe wall, drive roller shaft 2 revolution then, force roller 1 roll extrusion on inside pipe wall, make tube wall outwards heave distortion, until fitting like a glove with the matrix mould; In the backward rotation process, cam face is made way for roller shaft 2, makes roller shaft 2 related rollers 1 that the space of radially returning be arranged.
Embodiment two: referring to accompanying drawing 1～shown in Figure 3, a kind of interior roll forming device of aluminum pipe laemodipodiform, be made up of the matrix mould of a secondary imitative laemodipodiform, interior roll extrusion plug and driving mechanism.Wherein:
The matrix mould is put together by upper mold section 4 and female die 5, and female die 5 is as the fixing mould of piecing together, and upper mold section 4 is as the movable mould of piecing together.Constitute a cylindrical inner mold face after upper mold section 4 and female die 5 amalgamations, the matrix die cavity of imitative laemodipodiform is set around circumferencial direction on the barrel of interior die face.
Interior roll extrusion plug by roller 1, roller shaft 2, roll frame 6, camshaft 3 constitutes.Rolling frame 6 is a hollow stent, is ring support in this example, uniform three rollers 1 of the circumferential outer rim of its support body.Each roller 1 is by roller shaft 2 rotating supports, roller shaft 2 two ends are located in and roll in the chute set on the frame 6 13 that (chute 13 can be oblique chute, sees shown in Figure 3ly, also can be straight trough radially, see Fig. 1, this example adopts oblique chute), roller 1 is arranged in and rolls the circumferential cavity 9 of frame 6, and the wheel rim of roller 1 is provided with two imitative ring convex tendons, wherein, one big slightly, and one slightly little, makes the fidelity of imitative laemodipodiform higher.Camshaft 3 is made of cam and axis body two parts, and wherein, cam places in the cavity that rolls frame 6, and cam pin pair roller axle 2 is provided with cambered surface 12, and this cambered surface 12 acts on roller shaft 2 two ends simultaneously.Cambered surface 12 relatively rotates the vector size and Orientation at center, and the size of vector increases when satisfying forward rotation, the variation that reduces when oppositely changeing.Roll frame 6 one ends with screw 10 mounting flanges 11, one section threaded axle is arranged on the flange 11, this axle is connected with bolster; The other end is fixing with end cap 7, and end cap 7 central authorities establish the hole, and the axis body in the camshaft 3 passes from this hole, to connect driving mechanism.
Driving mechanism is made up of driving shaft, decelerator and motor, and the axis body of this driving shaft and camshaft 3 is by being threaded, and the other end of driving shaft is connected with motor by decelerator.
Claims (10)
1, a kind of interior method for rolling and molding of metal tube laemodipodiform is characterized in that:
(1), at the processed position in the hollow metal straight tube outside, be close to the pipe outer wall is provided with a secondary imitative laemodipodiform around circumferencial direction matrix mould;
(2), at the inboard corresponding position of hollow metal straight tube, along the inside pipe wall circumferencial direction convex roller of one group of imitative laemodipodiform is set evenly, each roller is by a roller shaft rotating support; The center is provided with a camshaft in pipe, in camshaft forward rotation process, utilize cam face to relatively rotate the variation of the size and Orientation of center vector, promoting each roller shaft earlier outwards moves radially, each roller is contacted with inside pipe wall, drive the roller shaft revolution then, force roller roll extrusion on inside pipe wall, make tube wall outwards heave distortion, until fitting like a glove with the matrix mould; In the backward rotation process, cam face is made way for roller shaft, makes the related roller of roller shaft that the space of radially returning be arranged.
2, interior method for rolling and molding according to claim 1, it is characterized in that: the convex roller of above-mentioned one group of imitative laemodipodiform is formed by three at least, and at the even cloth of circumferencial direction.
3, method for rolling and molding in according to claim 1 is characterized in that: above-mentioned matrix mould is put together by two half modules up and down, and wherein, in two half modules, one fixing, another activity amalgamation up and down.
4, a kind of interior roll forming device of metal tube laemodipodiform is characterized in that comprising:
The matrix mould of one secondary imitative laemodipodiform, this matrix mould has a cylindrical inner mold face, and the matrix die cavity of imitative laemodipodiform is set around circumferencial direction on the barrel of interior die face;
An interior roll extrusion plug, this plug mainly by roller, roller shaft, roll frame, camshaft constitutes, rolling frame is a hollow stent, uniform at least three rollers of the circumferential outer rim of its support body, each roller is by a roller shaft rotating support, the roller shaft two ends are located in and are rolled in the chute set on the frame, and roller is arranged in and rolls the circumferential cavity of frame, and the wheel rim of roller is provided with imitative ring convex tendon; Camshaft is made of cam and axis body two parts, and wherein, cam places in the cavity that rolls frame, and cam pin pair roller axle is provided with cambered surface or inclined-plane, and this cambered surface or inclined-plane act on the roller shaft two ends simultaneously; Cambered surface or inclined-plane relatively rotate the vector size and Orientation at center, and the size of vector increases when satisfying forward rotation, the variation that reduces when oppositely changeing.
5, interior roll forming device according to claim 4 is characterized in that: two imitative ring convex tendons are arranged on the wheel rim of described roller.
6, interior roll forming device according to claim 5 is characterized in that: in described two imitative ring convex tendons, one big, and another is little.
7, roll forming device in according to claim 4 is characterized in that: described matrix mould is put together by two half modules up and down.
8, roll forming device in according to claim 4 is characterized in that: described to roll chute set on the frame be skewed slot.
9, interior roll forming device according to claim 4, it is characterized in that: also comprise a driving shaft, this driving shaft is fixedlyed connected with the axis body of camshaft.
10, interior roll forming device according to claim 9, it is characterized in that: this driving shaft is connected with motor with decelerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410014792 CN1269587C (en) | 2004-04-26 | 2004-04-26 | Inner roll forming method and apparatus for knotted metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410014792 CN1269587C (en) | 2004-04-26 | 2004-04-26 | Inner roll forming method and apparatus for knotted metal pipe |
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| Publication Number | Publication Date |
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| CN1569355A CN1569355A (en) | 2005-01-26 |
| CN1269587C true CN1269587C (en) | 2006-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410014792 Expired - Fee Related CN1269587C (en) | 2004-04-26 | 2004-04-26 | Inner roll forming method and apparatus for knotted metal pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102814355A (en) * | 2012-09-19 | 2012-12-12 | 淄博斯壮铝业有限公司 | Apparatus for processing body of internally-thickened alumium alloy drill pipe |
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| DE102014206028A1 (en) | 2013-12-17 | 2015-06-18 | Johnson Controls Gmbh | Method for connecting a first component to a second component by plastic deformation |
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| CN110328251B (en) * | 2019-06-21 | 2020-09-01 | 武汉理工大学 | Near-net composite flow forming device and method for annular component with outer ribs |
| CN110480774A (en) * | 2019-07-18 | 2019-11-22 | 安徽润盈建材有限公司 | A kind of metal bamboo V-type ring mould-forming process |
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2004
- 2004-04-26 CN CN 200410014792 patent/CN1269587C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814355A (en) * | 2012-09-19 | 2012-12-12 | 淄博斯壮铝业有限公司 | Apparatus for processing body of internally-thickened alumium alloy drill pipe |
| CN102814355B (en) * | 2012-09-19 | 2014-10-08 | 淄博斯壮铝业有限公司 | Apparatus for processing body of internally-thickened alumium alloy drill pipe |
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| Publication number | Publication date |
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| CN1569355A (en) | 2005-01-26 |
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