KR20170048823A - Hydroforming apparatus for tube - Google Patents
Hydroforming apparatus for tube Download PDFInfo
- Publication number
- KR20170048823A KR20170048823A KR1020150149389A KR20150149389A KR20170048823A KR 20170048823 A KR20170048823 A KR 20170048823A KR 1020150149389 A KR1020150149389 A KR 1020150149389A KR 20150149389 A KR20150149389 A KR 20150149389A KR 20170048823 A KR20170048823 A KR 20170048823A
- Authority
- KR
- South Korea
- Prior art keywords
- tube
- pipe
- molding plate
- mold
- upper mold
- Prior art date
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Classifications
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/04—Stamping using rigid devices or tools for dimpling
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
The present invention relates to a hydraulic pressure molding apparatus for plastic-working a pipe material in a state in which high-pressure compressed water is injected into a pipe material, and more particularly, to a hydraulic pressure molding apparatus capable of simultaneously bending and surface- To a molding apparatus.
In the modern industry, in which the industry is continuously developing, product cycles are getting shorter due to diversification of consumers' purchasing preferences and the trend of smaller and larger variety of industrial structure. In order to cope with this, the industrial field has been steadily pursuing automation of the process.
On the other hand, it should be noted that the automation process must consider and reflect factors such as the speedy work process, process precision and product quality improvement. In recent years, due to the increase in income of such consumers and the development of various products, the industrial customs are also increasing and becoming larger.
Further, in order to secure the supply amount in accordance with the demand amount of the pipe as described above, it is necessary to shorten the time required for the manufacturing process, and in order to do so, automation of the related process is essential. Until recently, however, the milling work has mostly been done by hand.
Generally, the tube is manufactured by welding a metal sheet of a predetermined thickness by welding at the end, and may be used in a straight shape or in a curved shape by bending or curving the stop at a certain curvature. At this time, when bending the tube by simple pressing, wrinkles are generated or collapsed at the bending portion, and when the tube has a small curvature, the bending angle is not accurate and the bending surface is not smooth.
In order to solve such a problem, a hydroforming apparatus has been proposed in which the tube is bended while a high-pressure compressed water is filled in the tube. However, since the conventional hydroforming apparatus merely performs a function of bending the tube only, it can not form a concave or convex pattern in the tube, and therefore, a separate plastic working step for machining the tube surface is additionally required. It is difficult to precisely select the pattern forming position, which leads to a disadvantage that the product defects are increased.
SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems and it is an object of the present invention to prevent bending of the bending portion by bending the bending portion in a state where the high pressure water is filled in the bending portion, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a tubular hydraulic pressure molding apparatus capable of improving productivity and reducing a defective rate.
According to another aspect of the present invention, there is provided a hydraulic pressure molding apparatus comprising: a lower mold and an upper mold which are vertically stacked with a workpiece being interposed therebetween to bend the workpiece; A lower molding plate mounted on a surface of the lower mold to be in contact with the tube; An upper mold plate mounted on a surface of the upper mold that is in contact with the tube; A pair of punches for sealing both longitudinal ends of the pipe material; And a pair of feeding cylinders for transferring the pair of punches, wherein at least one concave / convex portion is formed on an upper surface of the lower molding plate and a lower surface of the upper molding plate, respectively, The lower molding plate and the upper molding plate form a pattern to be formed on the surface of the pipe member with the concave-convex portion.
The lower molding plate and the upper molding plate are each formed into a semicylindrical shape having a semicircular cross section so as to cover the entire one outer side of the tube,
When the width direction ends of the lower molding plate and the upper molding plate come into contact with each other, the lower molding plate and the upper molding plate form a single pipe shape bent or curved.
The lower molding plate and the upper molding plate are made of a material having higher strength than the lower mold and the upper mold.
The upper mold is lowered to bend the tube while the tube is placed on the lower mold, and the pair of feeding cylinders are moved in a direction in which the upper mold is in contact with the tube, Is moved toward the tube.
The lower mold and the upper mold are configured to bend down the interruption of the pipe to a U shape, and the descending speed of the upper mold and the moving speed of the punch are set to be the same.
The pair of punches are respectively in close contact with both longitudinal ends of the tube, and a part of the ends are inserted into the tube in a fitting manner.
The maximum outer diameter of the punch is formed to be equal to the outer diameter of the pipe.
By using the apparatus for hydroforming hydraulic pressure according to the present invention, it is possible to prevent the occurrence of wrinkles in the bending portion by bending the pipe material in a state in which the high-pressure compressed water is filled in the pipe, and the bending and surface processing As a result, the productivity and the defect rate can be improved, and it is possible to perform various types of pipes by hydroforming by replacing only the lower molding plate and the upper molding plate.
1 is a side view of a tubular hydroforming apparatus according to the present invention.
2 is an exploded perspective view of a lower molding plate and an upper molding plate included in the tubular hydroforming apparatus according to the present invention.
Figs. 3 to 5 sequentially illustrate the process of forming the tube by using the tube hydroforming apparatus according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a hydraulic hydroforming apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a side view of a tubular hydraulic pressure molding apparatus according to the present invention, and FIG. 2 is an exploded perspective view of a lower molding plate and an upper molding plate included in the tubular fluid pressure molding apparatus according to the present invention.
The apparatus for hydroforming a pipe according to the present invention is a type of a plastic working apparatus for bending a pipe 10 so that the diameter of each part of the pipe 10 can be increased without causing a phenomenon of forming a wrinkle on the bending portion of the pipe 10 And bending the tube 10 in a state in which high-pressure compressed water is injected into the tube 10 so that the tube 10 can be kept constant.
At this time, the tubular hydroforming apparatus according to the present invention is most distinguished in that it is configured so as to be able to perform both the bending process of the tube 10 and the surface machining. That is, the apparatus for hydroforming a pipe according to the present invention comprises a
Therefore, when the
That is, by using the apparatus for hydroforming according to the present invention, the bending of the tube 10 can be performed by one operation of lowering the
When the surface of the tube 10 is bent by the plastic forming method, a separate mold having the concave-convex portion should be pressed against the outer surface of the tube 10. The same lower and
However, in the tubular hydroforming apparatus according to the present invention, the entire
When the pattern to be formed on the surface of the tube 10 is located only on the upper surface and the lower surface of the tube 10, the lower and
Therefore, it is preferable that the
In order to press the tube 10 to bend it and to form a pattern of
Therefore, it is preferable that only the
If only the
The lower molding die 210 and the
When the tubular hydroforming is repeated several times, the portions contacting the tubular member 10 are worn. In the tubular hydroforming apparatus according to the present invention, the
3 to 5 sequentially illustrate the process of forming the tube 10 by using the tube hydroforming apparatus according to the present invention.
When the pipe 10 is to be formed by using the pipe tapping apparatus according to the present invention, the pipe 10 is first placed on the
4, the
The
When the
On the other hand, when the end of the tube 10 is bent while the both ends of the tube 10 are fixed, the total length of the tube 10 is increased, and the diameter of the tube 10 is reduced. As the diameter of the tube 10 is reduced, the surface of the tube 10 is not brought into close contact with the
Therefore, in order to prevent the phenomenon that the entire length of the tube 10 is increased and the diameter of the tube 10 is reduced, even if the tube 10 is bent, It is preferred that the
When the
If the maximum outer diameter of the
When the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention.
10: pipe member 110: lower mold
120: upper mold 210: lower molding plate
220: upper molding plate 240: concave and convex portion
310: Punch 320: Feeding cylinder
Claims (7)
A lower molding plate mounted on a surface of the lower mold to be in contact with the tube;
An upper mold plate mounted on a surface of the upper mold that is in contact with the tube;
A pair of punches for sealing both longitudinal ends of the pipe material; And
A pair of feeding cylinders for feeding the pair of punches;
, ≪ / RTI &
At least one recessed portion is formed on the upper surface of the lower molding plate and the lower surface of the upper molding plate so that when the lower mold and the upper mold bend the tube, the lower molding plate and the upper molding plate, Wherein the pattern forming step forms a pattern to be combined with the part.
The lower molding plate and the upper molding plate are each formed into a semicylindrical shape having a semicircular cross section so as to cover the entire one outer side of the tube,
Wherein when the width direction ends of the lower molding plate and the upper molding plate are in contact with each other, the lower molding plate and the upper molding plate form a single pipe shape bent or curved.
Wherein the lower molding plate and the upper molding plate are made of a material having a higher strength than the lower mold and the upper mold.
The upper mold is lowered to bend the tube when the tube is placed on the lower mold,
Wherein the pair of feeding cylinders move the punch toward the pipe material in accordance with a descending speed of the upper mold after the upper forming plate contacts the pipe material.
The lower mold and the upper mold are configured to down-bend the interruption of the tubing in a " U " shape,
Wherein the lowering speed of the upper mold and the moving speed of the punch are the same.
Wherein the pair of punches are respectively in close contact with both longitudinal ends of the pipe, and a part of the end is inserted into the pipe in a fitting manner.
Wherein a maximum outer diameter of the punch is equal to an outer diameter of the pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150149389A KR101744799B1 (en) | 2015-10-27 | 2015-10-27 | Hydroforming apparatus for tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150149389A KR101744799B1 (en) | 2015-10-27 | 2015-10-27 | Hydroforming apparatus for tube |
Publications (2)
Publication Number | Publication Date |
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KR20170048823A true KR20170048823A (en) | 2017-05-10 |
KR101744799B1 KR101744799B1 (en) | 2017-06-09 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020150149389A KR101744799B1 (en) | 2015-10-27 | 2015-10-27 | Hydroforming apparatus for tube |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20140088927A (en) * | 2012-12-14 | 2014-07-14 | 엘지전자 주식회사 | Mobile terminal |
CN111151611A (en) * | 2019-12-28 | 2020-05-15 | 张家保 | Arc bending device of aluminum profile |
CN113732155A (en) * | 2021-09-08 | 2021-12-03 | 南京航威智造科技有限公司 | Method for machining large-caliber ultrathin-wall bent pipe |
CN114160666A (en) * | 2021-11-10 | 2022-03-11 | 湖州金螺智能科技有限公司 | Thin-wall stainless steel clamping and pressing pipe fitting forming device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004141904A (en) * | 2002-10-23 | 2004-05-20 | Aisin Takaoka Ltd | Method and device of forming with hydraulic press |
-
2015
- 2015-10-27 KR KR1020150149389A patent/KR101744799B1/en active IP Right Grant
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20140088927A (en) * | 2012-12-14 | 2014-07-14 | 엘지전자 주식회사 | Mobile terminal |
CN111151611A (en) * | 2019-12-28 | 2020-05-15 | 张家保 | Arc bending device of aluminum profile |
CN113732155A (en) * | 2021-09-08 | 2021-12-03 | 南京航威智造科技有限公司 | Method for machining large-caliber ultrathin-wall bent pipe |
CN114160666A (en) * | 2021-11-10 | 2022-03-11 | 湖州金螺智能科技有限公司 | Thin-wall stainless steel clamping and pressing pipe fitting forming device |
Also Published As
Publication number | Publication date |
---|---|
KR101744799B1 (en) | 2017-06-09 |
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