CN104384266A - Cold roll forming technology for escalator handrail bracket - Google Patents

Cold roll forming technology for escalator handrail bracket Download PDF

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Publication number
CN104384266A
CN104384266A CN201410603581.8A CN201410603581A CN104384266A CN 104384266 A CN104384266 A CN 104384266A CN 201410603581 A CN201410603581 A CN 201410603581A CN 104384266 A CN104384266 A CN 104384266A
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CN
China
Prior art keywords
roller
bar
way
bending
escalator handrail
Prior art date
Application number
CN201410603581.8A
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Chinese (zh)
Other versions
CN104384266B (en
Inventor
李国平
张亚平
马黎明
Original Assignee
江苏同力机械有限公司
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Priority to CN201410603581.8A priority Critical patent/CN104384266B/en
Publication of CN104384266A publication Critical patent/CN104384266A/en
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Publication of CN104384266B publication Critical patent/CN104384266B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/08Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • B21D7/085Bending rods, profiles, or tubes by passing between rollers or through a curved die by passing through a curved die
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/14Bending rods, profiles, or tubes combined with measuring of bends or lengths

Abstract

The invention discloses a cold roll forming technology for an escalator handrail bracket. The cold roll forming technology is operated according to the following steps: 26-28 roller beds are arranged in a stretching bending die, wherein each roller bed comprises bending die assemblies and straightening roller assemblies; the convex-concave degree of a roller sheet in each bending die assembly and a gap between two vertically arranged rolling heads are regulated to control a pressing bending deformation amount to a section bar by each roller bed to be 8-12 degrees; then, the section bar is caused to slowly enter the last roller bed from the first roller bed; each straightening roller assembly arranged between every two bending die assemblies is used for protecting the driving direction of the section bar. The section bar processed by the technology is free from surface damage, the product quality and the attractiveness degree of the formed section bar are improved, surface processing is omitted in a later stage, the working efficiency of escalator handrail bracket processing is integrally improved, and meanwhile, the cost is saved on the whole.

Description

Escalator handrail support cold-bending molding technology
Technical field
The present invention relates to the processing and forming technology of section bar, specifically for the cold-bending molding technology of escalator handrail support.
Background technology
Now, slender type escalator is seen everywhere in each large mini-marts, and its advantage is that structure is simple, and visual appearance is exquisite, simultaneously moderate product price, and is practically applicable to very much the occasion of the few underload of the stream of people.But the handrail of the staircase wherein directly contacted with us, is run by armrest support system support.For domestic and international middle-end customers, this armrest support class market can not be ignored, and market potential value-added space is very large.
Under the pressure of market competition, each rival participates, and the dimensional requirement of product generally can reach the requirement of client through adjustment, but in equivalent technology aspect, requires to do essence run business into particular one and be difficult to.Because do essence to run business into particular one and will certainly bring the increasing of cost of manufacture to self enterprise, efficiency reduces, and does not finally reach the effect of doulbe-sides' victory.Therefore to improve from manufacture craft, reduce follow-up loaded down with trivial details operation, improve current production efficiency, worth thinking deeply about.
Complete cold drawn for section bar in the traditional handicraft making escalator handrail support, the cold draw equipment adopted is for being provided with 20 road roller-ways, therefore the deflection of per pass roller-way to section bar is needed to reach 15 °, in cold drawn process, the position of damage is had to process again to section bar, polishing hair, but this traditional technique often causes having damage location hairline to have obvious aberration with script hairline, and hairline is connected offset, hair influential effect overall appearance, the qualification rate of product is low.And numerous and diverse subsequent operation can increase the manufacturing cost of enterprise simultaneously, production efficiency reduces, and considers from the angle of enterprise, on the basis of the research of traditional cold drawing molding, the particularity of combination product, and the demand of client is set out, and improves cold drawing molding technique imperative.
Not damaged cold-bending molding technology is the multi-pass molding roller by being arranged in order, and the position of damage must not be had to protect coiled material, band, and the minimum friction forces making it be subject in deformation process.By constantly carrying out transverse cold bending, to make the section bar of specific section.Not damaged cold-bending molding technology is a kind of material-saving, energy-conservation, efficient sheet metal forming process, new technology.Utilize this technique, not only can produce high-quality shape product, and product appearance quality can be improved, enhance productivity, thus improve the market competitiveness of enterprise.
So escalator handrail support reply cost of manufacture will reduce, and sales volume promotes, and the requirement that production efficiency is high, the not damaged cold-bending molding technology for escalator handrail support becomes one of urgent popular research topic.
Therefore, the problems referred to above should be paid attention to and the problem solved in the operating process to escalator handrail support employing cold-bending molding technology.
Summary of the invention
For above-mentioned Problems existing, the invention provides escalator handrail support cold-bending molding technology.
Technical solution of the present invention is: escalator handrail support cold-bending molding technology, operates in accordance with the following steps:
A. stretch bending mold is fixed on stretch bending support, described stretch bending mold comprises straightway die main body and 26 ~ 28 road roller-ways, described straightway die main body penetrates roller-way described in per pass and arranges, roller-way described in per pass includes bending die assembly and correct roller assembly, described correct roller assembly is arranged on the rear end of described bending die assembly, described bending die assembly comprises presents lower vertically disposed two cylindrical milled heads, left cut is to circular arc mould and right cut to circular arc mould, milled head horizontally set described in two and two ends are installed in described left cut to circular arc mould and described right cut on circular arc mould, described straightway die main body is fastenedly connected to circular arc mould to circular arc mould and described right cut with described left cut respectively by dismountable mode,
Described milled head is the roller sheet being provided with concavo-convex quoit form on cylindrical roller, it is 8 ° ~ 12 ° by the camber of dancer rools sheet and the compacting bending deformation quantity of clearance control per pass roller-way to section bar of the vertically disposed milled head of two-phase, namely to arrange from first roller-way to last one roller-way form that per pass roller-way increases the compacting bending deformation quantity of section bar is 8 ° ~ 12 ° in order.
B. each described correct roller assembly comprises two correct rollers and bottom mounting bracket, and two described correct rollers are in being laterally set in parallel on described mounting bracket;
Section bar enters first roller-way, by section bar top by between two correct rollers, is then pressed in first roller-way by the mid portion on section bar top and is placed on straightway die main body and fixes between two milled heads.
C. section bar runs from first roller-way to last one roller-way on straightway mould, and per pass roller-way gives the certain pressure on top surface of section bar by milled head in the outside of section bar makes the interlude of section bar fully contact with straightway die main body; And section bar, through per pass roller-way, gives section bar certain orientation stretching by two adjacent bending die assemblies, makes section bar fully surrender between two roller-ways.
D. section bar is through last one roller-way, and the section bar reaching length-specific cuts off from stretch bending mold and is folded down, and resilience can obtain required shaping armrest support after shearing surplus.
Preferably, each described roller-way controls by a gearbox, and provides power by a motor to all described gearboxes.
Preferably, the section bar raw material adopted is the sheet material with double shielding layer.
Preferably, in step c, give section bar orientation stretching by adjacent bending die assembly, regulate tensile force that the yield strength of section bar is controlled at 290MPa ~ 350MPa.
Escalator handrail support cold-bending molding technology of the present invention, the wedge angle of pair roller sheet adopts and repairs a die, polishes or the processing mode of rounding, to ensure the level and smooth of roller sheet surface, can not cause damage to section bar.Section bar enters from first roller-way, is often provided with correct roller assembly between adjacent two bending die assemblies, ensures the orientation of section bar, fixes the position of section bar in bending die assembly.According to the effect obtained required for section bar after press-bending, diverse location on cylindrical roller sets roller sheet, and according to the press-bending size needed for section bar and press-bending angle, meticulous the bending deformation quantity of per pass roller-way to section bar is set, in the mode increased progressively, section bar is bent to last one roller-way from first roller-way, thus make reach required effect from last one roller-way section bar out.
The invention has the beneficial effects as follows: the present invention adopts the new technology in not damaged cold drawing molding technique---roller incision technology, escalator handrail support is processed, by to the analysis in escalator handrail rack forming process, have studied key parameter and influence factor thereof that roller cuts Roller Design, thus propose the methods of rational Design on Plane.On the basis of theoretical and numerical analysis, by the parameter that further determined that in cold roll forming of analyzing and researching.Determine the quantity of roller-way and per pass roller-way to the adjustment angle of shape extrusion to determine the bending deformation quantity of armrest support, make the minimum friction forces that section bar is subject in deformation process, be convenient to reduce the shaping resistance of section bar under tensile force effect, reduce to extrude the hard defects caused.Section bar can ensure minimizing of process time after multiple tracks roller-way, and section bar also can be avoided to sustain damage, and improves product quality and the aesthetic measure of armrest support, plays a protective role to section bar.
The section bar not damaged made owing to adopting this technique, therefore the section bar after shaping need not carry out hairline process again, eliminate the surface treatment process of later stage to section bar, considerably reduce the distortion that product rework process and size later stage cause because of factors such as polishings, entirety improves the operating efficiency to the processing of escalator handrail support.Further, adopt the manufacturing cost derate of this technique much larger than the purchase cost volume controlled, therefore, the not damaged for escalator handrail support is cold drawn, and there is the absolute production advantage in reply market.
Detailed description of the invention
In order to deepen understanding of the present invention, be described in further detail the present invention below in conjunction with embodiment, this embodiment, only for explaining the present invention, not forming protection scope of the present invention and limiting.
The present embodiment provides escalator handrail support cold-bending molding technology, operates in accordance with the following steps:
A. stretch bending mold is fixed on stretch bending support, described stretch bending mold comprises straightway die main body and 26 ~ 28 road roller-ways, be preferably 28 roads, main body penetrates roller-way described in per pass and arranges, roller-way described in per pass includes bending die assembly and correct roller assembly, described correct roller assembly is arranged on the rear end of described bending die assembly, described bending die assembly comprises presents lower vertically disposed two cylindrical milled heads, left cut is to circular arc mould and right cut to circular arc mould, milled head horizontally set described in two and two ends are installed in described left cut to circular arc mould and described right cut on circular arc mould, described straightway die main body is fastenedly connected to circular arc mould to circular arc mould and described right cut with described left cut respectively by dismountable mode, described milled head is the roller sheet being provided with concavo-convex quoit form on cylindrical roller, it is 8 ° ~ 12 ° by the camber of dancer rools sheet and the compacting bending deformation quantity of clearance control per pass roller-way to section bar of the vertically disposed milled head of two-phase, be preferably 8 °, roller-way is arranged to last one roller-way form that per pass roller-way increases the compacting bending deformation quantity of section bar is 8 ° ~ 12 ° in order, is preferably 8 °.
B. each described correct roller assembly comprises two correct rollers and bottom mounting bracket, and two described correct rollers are in being laterally set in parallel on described mounting bracket; Section bar enters first roller-way, by section bar top by between two correct rollers, is then pressed in first roller-way by the mid portion on section bar top and is placed on straightway die main body and fixes between two milled heads.
C. section bar runs from first roller-way to last one roller-way on straightway mould, and per pass roller-way gives the certain pressure on top surface of section bar by milled head in the outside of section bar makes the interlude of section bar fully contact with straightway die main body; And section bar, through per pass roller-way, gives section bar certain orientation stretching by two adjacent bending die assemblies, makes section bar fully surrender between two roller-ways.
D. section bar is through last one roller-way, and the section bar reaching length-specific cuts off from stretch bending mold and is folded down, and resilience can obtain required shaping armrest support after shearing surplus.
Each described roller-way controls by a gearbox, and provides power by a motor to all described gearboxes.The section bar raw material adopted is the sheet material with double shielding layer.In step c, give section bar orientation stretching by adjacent bending die assembly, regulate tensile force to make the yield strength of section bar control at 290MPa ~ 350MPa, be preferably 300MPa.
The present embodiment escalator handrail support cold-bending molding technology, the wedge angle of pair roller sheet adopts and repairs a die, polishes or the processing mode of rounding, to ensure the level and smooth of roller sheet surface, can not cause damage to section bar.Section bar enters from first roller-way, is often provided with correct roller assembly between adjacent two bending die assemblies, ensures the orientation of section bar, fixes the position of section bar in bending die assembly.According to the effect obtained required for section bar after press-bending, diverse location on cylindrical roller sets roller sheet, and according to the press-bending size needed for section bar and press-bending angle, meticulous the bending deformation quantity of per pass roller-way to section bar is set, in the mode increased progressively, section bar is bent to last one roller-way from first roller-way, thus make reach required effect from last one roller-way section bar out.
The beneficial effect of the present embodiment is: the present invention adopts the new technology in not damaged cold drawing molding technique---roller incision technology, escalator handrail support is processed, by to the analysis in escalator handrail rack forming process, have studied key parameter and influence factor thereof that roller cuts Roller Design, thus propose the methods of rational Design on Plane.On the basis of theoretical and numerical analysis, by the parameter that further determined that in cold roll forming of analyzing and researching.Determine the quantity of roller-way and per pass roller-way to the adjustment angle of shape extrusion to determine the bending deformation quantity of armrest support, make the minimum friction forces that section bar is subject in deformation process, be convenient to reduce the shaping resistance of section bar under tensile force effect, reduce to extrude the hard defects caused.Section bar can ensure minimizing of process time after multiple tracks roller-way, and section bar also can be avoided to sustain damage, and improves product quality and the aesthetic measure of armrest support, plays a protective role to section bar.
The section bar not damaged made owing to adopting this technique, therefore the section bar after shaping need not carry out hairline process again, eliminate the surface treatment process of later stage to section bar, considerably reduce the distortion that product rework process and size later stage cause because of factors such as polishings, entirety improves the operating efficiency to the processing of escalator handrail support.Further, adopt the manufacturing cost derate of this technique much larger than the purchase cost volume controlled, therefore, the not damaged for escalator handrail support is cold drawn, and there is the absolute production advantage in reply market.

Claims (4)

1. escalator handrail support cold-bending molding technology, is characterized in that: operate in accordance with the following steps:
A. stretch bending mold is fixed on stretch bending support, described stretch bending mold comprises straightway die main body and 26 ~ 28 road roller-ways, described straightway die main body penetrates roller-way described in per pass and arranges, roller-way described in per pass includes bending die assembly and correct roller assembly, described correct roller assembly is arranged on the rear end of described bending die assembly, described bending die assembly comprises presents lower vertically disposed two cylindrical milled heads, left cut is to circular arc mould and right cut to circular arc mould, milled head horizontally set described in two and two ends are installed in described left cut to circular arc mould and described right cut on circular arc mould, described straightway die main body is fastenedly connected to circular arc mould to circular arc mould and described right cut with described left cut respectively by dismountable mode,
Described milled head is the roller sheet being provided with concavo-convex quoit form on cylindrical roller; it is 8 ° ~ 12 ° by the camber of dancer rools sheet and the compacting bending deformation quantity of clearance control per pass roller-way to section bar of the vertically disposed milled head of two-phase, namely to arrange from first roller-way to last one roller-way form that per pass roller-way increases the compacting bending deformation quantity of section bar is 8 ° ~ 12 ° in order;
B. each described correct roller assembly comprises two correct rollers and bottom mounting bracket, and two described correct rollers are in being laterally set in parallel on described mounting bracket;
Section bar enters first roller-way, by section bar top by between two correct rollers, is then pressed in first roller-way by the mid portion on section bar top and is placed on straightway die main body and fixes between two milled heads;
C. section bar runs from first roller-way to last one roller-way on straightway mould, and per pass roller-way gives the certain pressure on top surface of section bar by milled head in the outside of section bar makes the interlude of section bar fully contact with straightway die main body; And section bar, through per pass roller-way, gives section bar certain orientation stretching by two adjacent bending die assemblies, makes section bar fully surrender between two roller-ways;
D. section bar is through last one roller-way, and the section bar reaching length-specific cuts off from stretch bending mold and is folded down, and resilience can obtain required shaping armrest support after shearing surplus.
2. escalator handrail support cold-bending molding technology according to claim 1, is characterized in that: each described roller-way controls by a gearbox, and provides power by a motor to all described gearboxes.
3. escalator handrail support cold-bending molding technology according to claim 1, is characterized in that: the section bar raw material adopted is the sheet material with double shielding layer.
4. escalator handrail support cold-bending molding technology according to claim 1, is characterized in that: in step c, gives section bar orientation stretching by adjacent bending die assembly, regulates tensile force that the yield strength of section bar is controlled at 290MPa ~ 350MPa.
CN201410603581.8A 2014-11-03 2014-11-03 Cold roll forming technology for escalator handrail bracket CN104384266B (en)

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Application Number Priority Date Filing Date Title
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CN104384266B CN104384266B (en) 2017-02-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107720511A (en) * 2017-09-20 2018-02-23 江苏同力机械有限公司 One kind increases no ear armrest support and its bending and molding method
CN108655227A (en) * 2018-05-03 2018-10-16 徐通 A kind of vertical numerical control flange machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD223647A1 (en) * 1984-04-26 1985-06-19 Univ Magdeburg Tech Device for producing cropped profiles
CN101905249A (en) * 2010-07-30 2010-12-08 长沙仲腾金属材料科技有限公司 Method and device for machining curved profiles in combination with online quenching temperature control in short flow
CN102151728A (en) * 2011-05-09 2011-08-17 江苏同力机械有限公司 Cold bending forming process for camber beam of car body of passenger car
CN102218477A (en) * 2011-04-26 2011-10-19 江苏同力机械有限公司 Cold roll forming die for curved beam of passenger vehicle body
CN102218461A (en) * 2011-03-02 2011-10-19 北京北方车辆集团有限公司 Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret
CN102240706A (en) * 2011-05-09 2011-11-16 江苏同力机械有限公司 Cold-bending forming process of F-shaped cover plate
KR20120126454A (en) * 2011-05-11 2012-11-21 주식회사 성우하이텍 Ejecting device for stretch bender
CN102814365A (en) * 2011-06-10 2012-12-12 (株)星宇Hitech Welding device for stretch bender

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD223647A1 (en) * 1984-04-26 1985-06-19 Univ Magdeburg Tech Device for producing cropped profiles
CN101905249A (en) * 2010-07-30 2010-12-08 长沙仲腾金属材料科技有限公司 Method and device for machining curved profiles in combination with online quenching temperature control in short flow
CN102218461A (en) * 2011-03-02 2011-10-19 北京北方车辆集团有限公司 Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret
CN102218477A (en) * 2011-04-26 2011-10-19 江苏同力机械有限公司 Cold roll forming die for curved beam of passenger vehicle body
CN102151728A (en) * 2011-05-09 2011-08-17 江苏同力机械有限公司 Cold bending forming process for camber beam of car body of passenger car
CN102240706A (en) * 2011-05-09 2011-11-16 江苏同力机械有限公司 Cold-bending forming process of F-shaped cover plate
KR20120126454A (en) * 2011-05-11 2012-11-21 주식회사 성우하이텍 Ejecting device for stretch bender
CN102814365A (en) * 2011-06-10 2012-12-12 (株)星宇Hitech Welding device for stretch bender

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107720511A (en) * 2017-09-20 2018-02-23 江苏同力机械有限公司 One kind increases no ear armrest support and its bending and molding method
CN107720511B (en) * 2017-09-20 2020-05-12 江苏同力日升机械股份有限公司 Heightened armrests without ears and bending forming method thereof
CN108655227A (en) * 2018-05-03 2018-10-16 徐通 A kind of vertical numerical control flange machine

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Address after: 212300 Liuwei Road, Danyang Economic Development Zone, Zhenjiang City, Jiangsu Province

Patentee after: Jiangsu Tongli Risheng Machinery Co., Ltd.

Address before: 212300 Liuwei Road, Danyang Economic Development Zone, Zhenjiang City, Jiangsu Province

Patentee before: Jiangsu Tongli Machinery Co.,Ltd.