CN102601187B - Soft mandrel inserting and extracting device and inserting and extracting method - Google Patents
Soft mandrel inserting and extracting device and inserting and extracting method Download PDFInfo
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- CN102601187B CN102601187B CN201210066052.XA CN201210066052A CN102601187B CN 102601187 B CN102601187 B CN 102601187B CN 201210066052 A CN201210066052 A CN 201210066052A CN 102601187 B CN102601187 B CN 102601187B
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Abstract
The invention provides a soft mandrel inserting and extracting device and an inserting and extracting method, which are used for performing cold cored bending of a metal pipe fitting. The inner wall of the pipe fitting cannot be damaged by means of pulling when a soft mandrel is extracted from a bent pipe, and cold cored bending of the metal pipe fitting and inserting and extracting of the soft mandrel are continuously performed, so that operating efficiency is high. The device comprises a base plate and a hydraulic cylinder, the outer end of a siding piston rod of the hydraulic cylinder is connected with the middle of a transversely placed connecting shaft, a platy pulling block is arranged in the front of the middle of the connecting shaft and connected with an exposed end plate connecting part of the mandrel, and the front end of the pulling block is abutted to the exposed end of the mandrel. Rolling bearings are arranged at two ends of the connecting shaft, a pair of guide plates are symmetrically arranged on the base plate, the guide plate on each side is provided with a guide groove, the width of each guide groove is matched with the outer diameter of each rolling bearing, the guide grooves are equivalent in width and are as same as or similar to the axis curve of the bent metal pipe fitting in shape and in direction, the connecting shaft is placed on the guide grooves through the rolling bearings, and the outer end of a hydraulic cylinder body is placed on a support through a hydraulic cylinder rotating shaft, and can rotate around the rotating shaft.
Description
Technical field
The present invention relates to metal tube cold conditions brake forming technical field, be specifically related to have chip bending to add a kind of soft mandrel plug-in and pull-off device in man-hour for metal tube cold conditions and metal tube cold conditions has chip bending to add the plug plug method in man-hour.
Background technology
Extensively there is metal tube cold conditions and have chip bending process requirements in modern industry, plug of a great variety, rigid plug and soft mandrel can be divided into, in metal tube, insert soft mandrel time bending and effectively can ensure bending quality, the sheet metal block serial connection with smooth edge can be formed by soft bar by soft mandrel; General elder generation inserts soft mandrel in metal tube, after metal tube be placed in bending mould bend, then to extract in soft mandrel bend pipe with hydraulic jack.But because the sliding stopper rod of oil cylinder only makes linearly operating, when soft mandrel being extracted from bend pipe with hydraulic jack, often occur that pipe fitting inner wall is pulled, even pipe fitting outer wall generation depressed deformation, especially even more serious for some shape tube such as elliptical tube, rectangular tube situations.In addition, prior art by manual or complete the action of soft mandrel to be inserted in metal tube with aid, then is extracted in soft mandrel bend pipe with hydraulic jack, and action poor continuity, operating efficiency is low.
The present invention solves the problems referred to above just.
Summary of the invention
Technical problem to be solved by this invention is for the above-mentioned state of the art, thering is provided a kind of has chip bending to add the soft mandrel plug-in and pull-off device in man-hour for metal tube cold conditions and metal tube cold conditions has chip bending to add the plug plug method in man-hour, ensure can not pull pipe fitting inner wall when soft mandrel being extracted from bend pipe, and make metal tube cold conditions have chip bending to process to insert with soft mandrel and extract and carry out continuously, operating efficiency is high.The present invention solves the problems of the technologies described above adopted technical scheme:
Soft mandrel plug-in and pull-off device, after soft mandrel being inserted metal tube and brake forming before the brake forming of metal tube cold conditions, the bending port of soft mandrel from metal tube is extracted, described device comprises the soft mandrel be connected in series by the sheet metal block with smooth edge by soft bar, the outer end of described soft mandrel is the end plate exposing to metal pipe mouth after inserting, and is provided with a connection piece, described device comprises base plate, the hydraulic jack on base plate is shelved on as the longitudinal direction of extracting power source, it is characterized in that, the sliding stopper rod outer end of oil cylinder of described hydraulic jack is fixedly connected with in the middle part of a connecting axle laterally placed, in the middle part of described connecting axle, front side is provided with tabular guiding piece, described guiding piece is connected with the End plate connections that exposes of described plug, and described in its front end, the exposed end portion of plug offsets, described connecting axle two ends are provided with rolling bearing, described oil cylinder sliding stopper rod longitudinal place, both sides base plate is symmetrically arranged with a pair guide plate, described every flipper guide is provided with the guide groove that groove width and described rolling bearing external diameter match, the wide setting of the same or similar shape of axle center curve and direction after described guide groove bends by described metal tube, and the length of described guide groove be greater than metal tube bend after axle center length of curve, the rolling bearing of described connecting axle through being arranged on its two ends is shelved on the guide groove of described guide plate, described cylinder body of hydraulic oil cylinder outer end is shelved on the cylinder bracket that is positioned at outside frame upper spider through oil cylinder rotary shaft, described oil cylinder rotary shaft is laterally fixedly installed on described cylinder bracket, described hydraulic jack and sliding stopper rod thereof can be rotated around oil cylinder rotary shaft.
Described plug is divided into upper and lower two by high strength ropy and the sheet metal block serial connection forming plug is formed, described ropy forms " U " shape circle outward at plug end plate, End plate connections is exposed as described plug, described tabular guiding piece is provided with connecting hole, and connector " U " shape circle is through this connecting hole.
Described guide plate is directly fixedly installed on described base plate.
Be close to arranged outside a pair guide plate fixed head for fixing described guide plate of described guide plate, described guide plate fixed head is fixed on described base plate, below described guide plate, its two side position nearly is provided with installing hole, the relevant position of described guide plate fixed head is provided with groove or rotating shaft installing hole for regulating described guide plate position, and described guide plate leaves base plate one determining deviation bolt and is mounted on guide plate fixed head.
Two relevant positions of described guide plate fixed head are provided with the straight trough for regulating described guide plate position, are connected between described guide plate with guide plate fixed head with bolt.
One of them of two relevant positions of described guide plate fixed head arranges rotating shaft installing hole, replaces bolt as the connector between guide plate and guide plate fixed head with a rotating shaft; The arc groove of wherein two settings for regulating described guide plate position of two relevant positions of described guide plate fixed head.
Described arc groove with rotating shaft installing hole center for the center of circle, with both arc groove and rotating shaft installing hole center distance for radius.
Metal tube cold conditions has chip bending to add the plug plug method in man-hour, it is characterized in that, use soft mandrel plug-in and pull-off device as previously discussed, described plug plug-in and pull-off device is arranged on by bending mould, the metal tube that need bend puts into bending mould, primer fluid compressing cylinder makes the sliding stopper rod of oil cylinder extend, and promotes described connecting axle, guiding piece along guide groove forward, and then is promoted described soft mandrel inserted in metal tube by the guiding piece that end plate offsets of exposing of its front end and plug; After mould to be bent completes pipe fitting brake forming, primer fluid compressing cylinder makes the sliding stopper rod of oil cylinder retract, drive described connecting axle, guiding piece along guide groove backward, and then expose End plate connections by plug and drive described soft mandrel along guide groove backward, described plug is extracted in metal winding pipe.
Arrange the sliding stopper rod traverse of oil cylinder, after described plug is pulled out, its inner with smooth edge is still shelved on bending mould counterdie port.
Provided by the present invention have chip bending to add soft mandrel plug-in and pull-off device and the plug plug method in man-hour for metal tube cold conditions, and can not pull pipe fitting inner wall when ensureing soft mandrel to extract from bend pipe, bending quality is high, plug long service life; And make metal tube cold conditions have chip bending to process to insert with soft mandrel and extract and carry out continuously, operating efficiency is high, and be particularly useful for pipe, the cold conditions of elliptical tube has chip bending to process, the cold conditions that also can be used for square pipe fitting has chip bending to process.In addition, because the guide plate position of soft mandrel plug-in and pull-off device provided by the present invention can suitably adjust, the specification adaptability for metal tube is also stronger.
Accompanying drawing explanation
Fig. 1 is institute of the present invention suitable metal pipe fitting schematic diagram;
Fig. 2 is bending rear metal tube schematic diagram;
Fig. 3 is Fig. 2 soft mandrel schematic diagram of the present invention;
Fig. 4 is that soft mandrel inserts metal tube view;
Fig. 5 is the bending rear schematic diagram of metal tube inserting soft mandrel;
Fig. 6 is soft mandrel plug-in and pull-off device front view of the present invention;
Fig. 7 is soft mandrel plug-in and pull-off device top view of the present invention;
Fig. 8 is that metal tube is placed on bending mould by the bending front view of soft mandrel plug-in and pull-off device insertion soft mandrel of the present invention.
Fig. 9 is for extract soft mandrel view by soft mandrel plug-in and pull-off device of the present invention.
Detailed description of the invention
The present invention is used for metal tube 1 as shown in Figure 1 to bend to as shown in Figure 2, metal tube 1 can be pipe, elliptical tube, also can be rectangular tube, in order to ensure brake forming quality, in metal tube 1, insert soft mandrel 2 before bending, the sheet metal block serial connection with smooth edge is formed by soft bar by soft mandrel 2, can arbitrarily along its soft bar distortion, its outer end is the end plate 3 exposing to metal pipe mouth after inserting, and is provided with a connection piece 4.A kind of soft mandrel 2 being relatively applicable to apparatus of the present invention as shown in Figure 3, this soft mandrel 2 is divided into upper and lower two by high strength ropy and the sheet metal block serial connection forming plug is formed, ropy forms " U " shape circle outward at plug end plate, End plate connections 4 is exposed as described plug, high strength ropy can select steel wire rope, also can select nylon rope or other high strength cord.When soft mandrel 2 being inserted in metal tube 1, end plate 3 and connector 4 expose to metal pipe mouth, as shown in Figure 4; When metal tube 1 bends, soft mandrel 2 follows its distortion, as shown in Figure 5.
Soft mandrel plug-in and pull-off device as shown in Figures 6 to 9, after soft mandrel 2 being inserted before the brake forming of metal tube 1 cold conditions metal tube 1 and brake forming, the bending port of soft mandrel 2 from metal tube 1 is extracted, this device comprises soft mandrel 2 as above, base plate 5, the hydraulic jack 6 on base plate 5 is shelved on as the longitudinal direction of extracting power source, sliding stopper rod 7 outer end of oil cylinder of hydraulic jack 6 is fixedly connected with in the middle part of a connecting axle 8 laterally placed, in the middle part of connecting axle 8, front side is provided with tabular guiding piece 9, guiding piece 9 is connected with end plate 3 connector 4 that exposes of plug 2, connection can adopt: tabular guiding piece 9 is arranged connecting hole 15, connector 4 " U " shape circle is through this connecting hole 15, and the end plate 3 that exposes of its front end and plug 2 offsets, connecting axle 8 two ends are provided with rolling bearing 10, oil cylinder sliding place, stopper rod 7 longitudinal both sides base plate 5 is symmetrically arranged with a pair guide plate 11, every flipper guide 11 is provided with the guide groove 12 that groove width and described rolling bearing 10 external diameter match, guide groove 12 press metal tube 1 bending after the wide setting of the same or similar shape of axle center curve and direction, and the length of guide groove 12 be greater than metal tube 1 bending after axle center length of curve, the rolling bearing 10 of connecting axle 8 through being arranged on its two ends is shelved on the guide groove of guide plate, hydraulic jack 6 cylinder body outer end is shelved on the cylinder bracket 14 that is positioned at outside base plate 5 through oil cylinder rotary shaft 13, oil cylinder rotary shaft 13 is laterally fixedly installed on cylinder bracket 14, hydraulic jack 6 and sliding stopper rod 7 thereof can be rotated around oil cylinder rotary shaft 13.
About the setting of guide plate 11, multiple plan of establishment can be formed.
Scheme 1: guide plate 11 is directly fixedly installed on base plate 5.This scheme adapts to the metal tube bending machining of single specification.
Scheme 2: the arranged outside a pair guide plate fixed head 16 for resting guide 11 being close to guide plate 11, guide plate fixed head 16 is fixed on base plate 5, below guide plate 11, its two side position nearly is provided with installing hole, the relevant position of guide plate fixed head 16 is provided with groove or rotating shaft installing hole for regulating guide plate 11 position, and guide plate 11 leaves base plate 5 one determining deviation bolt and is mounted on guide plate fixed head 16.
Scheme 2-1: two relevant positions of guide plate fixed head 16 are provided with the straight trough for regulating described guide plate 11 position, are connected between guide plate with guide plate fixed head 16 with bolt.
Scheme 2-2: one of them of two relevant positions of guide plate fixed head 16 arranges rotating shaft installing hole 17, replaces bolt as the connector between guide plate 11 and guide plate fixed head 16 with a rotating shaft; The arc groove 18 of wherein two settings for regulating described guide plate 11 position of two relevant positions of guide plate fixed head 16.Arc groove 18 can adopt with rotating shaft installing hole 17 center for the center of circle, with arc groove 18 with both rotating shaft installing holes 17 center distance for radius.
The occupation mode of the above soft mandrel plug-in and pull-off device, plug plug-in and pull-off device is arranged on bending mould 19 other, the metal tube 1 that need bend puts into bending mould 19, primer fluid compressing cylinder 6 makes the sliding stopper rod 7 of oil cylinder extend, promote connecting axle 8, guiding piece 9 along guide groove 12 forward, and then promoted described soft mandrel 2 inserted in metal tube 1 by the guiding piece 9 that end plate 3 offsets of exposing of its front end and plug 2; After mould 19 to be bent completes pipe fitting brake forming, primer fluid compressing cylinder 6 makes the sliding stopper rod 7 of oil cylinder retract, drive connecting axle 8, guiding piece 9 along guide groove 12 backward, and then expose end plate 3 connector 4 by plug and drive described soft mandrel 2 along guide groove 12 backward, plug 2 is extracted in metal winding pipe.Because hydraulic jack 6 cylinder body outer end is provided with rotating shaft, at this moment, hydraulic jack 6 and sliding stopper rod 7 thereof swing around oil cylinder rotary shaft 13, as shown in Figure 9, can not have influence on connecting axle 8, guiding piece 9 along guide groove 12 backward simultaneously downward traverse.
Sliding stopper rod (7) traverse of oil cylinder is set, after described plug (2) is pulled out, its the inner with smooth edge is still shelved on bending mould (19) counterdie port, soft mandrel 2 is inserted and extracts and can carry out continuously smoothly.
Claims (5)
1. soft mandrel plug-in and pull-off device, after soft mandrel (2) being inserted metal tube (1) and brake forming before metal tube (1) cold conditions brake forming, the bending port of soft mandrel (2) from metal tube (1) is extracted, described device comprises the soft mandrel (2) be connected in series by the sheet metal block with smooth edge by soft bar, the outer end of described soft mandrel (2) is the end plate (3) exposing to metal pipe mouth after inserting, and is provided with a connection piece (4), described plug plug-in and pull-off device comprises base plate (5), the hydraulic jack (6) on base plate (5) is shelved on as the longitudinal direction of extracting power source, it is characterized in that, connecting axle (8) middle part that sliding stopper rod (7) outer end of oil cylinder and of described hydraulic jack (6) is laterally placed is fixedly connected with, front side, described connecting axle (8) middle part is provided with tabular guiding piece (9), described guiding piece (9) is connected with end plate (3) connector (4) that exposes of described plug (2), and the end plate (3) that exposes of its front end and described plug (2) offsets, described connecting axle (8) two ends are provided with rolling bearing (10), sliding place base plate, stopper rod (7) the longitudinal both sides (5) of described oil cylinder are symmetrically arranged with a pair guide plate (11), described every flipper guide (11) is provided with the guide groove (12) that groove width and described rolling bearing (10) external diameter match, the wide setting of the same or similar shape of axle center curve and direction after described guide groove (12) is bending by described metal tube (1), and the length of described guide groove (12) be greater than metal tube (1) bending after axle center length of curve, the rolling bearing (10) of described connecting axle (8) through being arranged on its two ends is shelved on the guide groove of described guide plate, described hydraulic jack (6) cylinder body outer end through oil cylinder rotary shaft (13) be shelved on be positioned at base plate (5) outside cylinder bracket (14) on, described oil cylinder rotary shaft (13) is laterally fixedly installed on described cylinder bracket (14), described hydraulic jack (6) and sliding stopper rod (7) thereof can be rotated around oil cylinder rotary shaft (13), be close to arranged outside a pair guide plate fixed head (16) of described guide plate (11), described guide plate fixed head (16) is fixed on described base plate (5), and described guide plate (11) leaves base plate (5) determining deviation and is arranged on guide plate fixed head (16), described guide plate (11) below its two side position nearly is provided with installing hole, one of them of two relevant positions of described guide plate fixed head (16) arranges rotating shaft installing hole (17), with a rotating shaft as the connector between guide plate (11) and guide plate fixed head (16), the arc groove (18) of wherein two settings for regulating described guide plate (11) position of two relevant positions of described guide plate fixed head (16).
2. soft mandrel plug-in and pull-off device as claimed in claim 1, it is characterized in that, described plug (2) is divided into upper and lower two by high strength ropy and the sheet metal block serial connection forming plug is formed, described ropy forms " U " shape circle outward at plug end plate, End plate connections (4) is exposed as described plug, described tabular guiding piece is provided with connecting hole (15), and connector " U " shape circle is through this connecting hole (15).
3. soft mandrel plug-in and pull-off device as claimed in claim 1, it is characterized in that, described arc groove (18) with rotating shaft installing hole (17) center for the center of circle, with the two center distance of arc groove (18) and rotating shaft installing hole (17) for radius.
4. metal tube cold conditions has chip bending to add the plug plug method in man-hour, it is characterized in that, use the soft mandrel plug-in and pull-off device as described in any one of claims 1 to 3, described plug plug-in and pull-off device is arranged on bending mould (19) other, the metal tube (1) that need bend puts into bending mould (19), primer fluid compressing cylinder (6) makes the sliding stopper rod (7) of oil cylinder extend, promote described connecting axle (8), guiding piece (9) along guide groove (12) forward, and then promoted described soft mandrel (2) inserted in metal tube (1) by the guiding piece (9) that end plate (3) offsets of exposing of its front end and described plug (2), after mould to be bent (19) completes pipe fitting brake forming, primer fluid compressing cylinder (6) makes the sliding stopper rod (7) of oil cylinder retract, drive described connecting axle (8), guiding piece (9) along guide groove (12) backward, and then expose end plate (3) connector (4) by plug and drive described soft mandrel (2) along guide groove (12) backward, described plug (2) is extracted in metal winding pipe.
5. plug plug method as claimed in claim 4, it is characterized in that, arrange sliding stopper rod (7) traverse of oil cylinder, after described plug (2) is pulled out, its inner with smooth edge is still shelved on bending mould (19) counterdie port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066052.XA CN102601187B (en) | 2012-03-06 | 2012-03-06 | Soft mandrel inserting and extracting device and inserting and extracting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210066052.XA CN102601187B (en) | 2012-03-06 | 2012-03-06 | Soft mandrel inserting and extracting device and inserting and extracting method |
Publications (2)
| Publication Number | Publication Date |
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| CN102601187A CN102601187A (en) | 2012-07-25 |
| CN102601187B true CN102601187B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210066052.XA Active CN102601187B (en) | 2012-03-06 | 2012-03-06 | Soft mandrel inserting and extracting device and inserting and extracting method |
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| CN (1) | CN102601187B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108435853A (en) * | 2018-02-07 | 2018-08-24 | 凌云工业股份有限公司 | A kind of metal pipe material no waste mine bend molding apparatus |
| CN111822563A (en) * | 2020-07-22 | 2020-10-27 | 芜湖市夯福机械模具有限公司 | Pipe elbow punch forming die |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205751Y (en) * | 1993-03-19 | 1995-08-23 | 北京天坛家具公司 | Soft connecting mandrel device for rectangle elbow |
| RU2174885C1 (en) * | 2000-09-27 | 2001-10-20 | Общество с ограниченной ответственностью "Промышленные инвестиции" | Tube bending apparatus |
| CN201186324Y (en) * | 2008-03-11 | 2009-01-28 | 无锡曙光模具有限公司 | Local bending mold special for producing vehicle rearmost axle assembly front beam |
| CN101947583A (en) * | 2010-08-30 | 2011-01-19 | 张家港市明华机械制造有限公司 | Core-pulling device on tube bender |
| CN102139526A (en) * | 2011-03-17 | 2011-08-03 | 厦门市方圆通模具有限公司 | Arc core-pulling device for die |
| CN202539307U (en) * | 2012-03-06 | 2012-11-21 | 宁波敏实汽车零部件技术研发有限公司 | Soft mandril insertion and extraction device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3354795B2 (en) * | 1996-06-08 | 2002-12-09 | 千代田工業株式会社 | Spindle mounting equipment for pipe bending equipment |
-
2012
- 2012-03-06 CN CN201210066052.XA patent/CN102601187B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2205751Y (en) * | 1993-03-19 | 1995-08-23 | 北京天坛家具公司 | Soft connecting mandrel device for rectangle elbow |
| RU2174885C1 (en) * | 2000-09-27 | 2001-10-20 | Общество с ограниченной ответственностью "Промышленные инвестиции" | Tube bending apparatus |
| CN201186324Y (en) * | 2008-03-11 | 2009-01-28 | 无锡曙光模具有限公司 | Local bending mold special for producing vehicle rearmost axle assembly front beam |
| CN101947583A (en) * | 2010-08-30 | 2011-01-19 | 张家港市明华机械制造有限公司 | Core-pulling device on tube bender |
| CN102139526A (en) * | 2011-03-17 | 2011-08-03 | 厦门市方圆通模具有限公司 | Arc core-pulling device for die |
| CN202539307U (en) * | 2012-03-06 | 2012-11-21 | 宁波敏实汽车零部件技术研发有限公司 | Soft mandril insertion and extraction device |
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| CN102601187A (en) | 2012-07-25 |
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