WO2014029185A1 - 低地板车车体侧墙板粘接方法 - Google Patents

低地板车车体侧墙板粘接方法 Download PDF

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Publication number
WO2014029185A1
WO2014029185A1 PCT/CN2012/087273 CN2012087273W WO2014029185A1 WO 2014029185 A1 WO2014029185 A1 WO 2014029185A1 CN 2012087273 W CN2012087273 W CN 2012087273W WO 2014029185 A1 WO2014029185 A1 WO 2014029185A1
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WIPO (PCT)
Prior art keywords
side wall
wall panel
bonding
vehicle body
car body
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PCT/CN2012/087273
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English (en)
French (fr)
Inventor
孟洪军
邢宏楠
刘庆祝
周志刚
朱明�
王飞
Original Assignee
长春轨道客车股份有限公司
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Publication of WO2014029185A1 publication Critical patent/WO2014029185A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D27/00—Connections between superstructure or understructure sub-units
    • B62D27/02—Connections between superstructure or understructure sub-units rigid
    • B62D27/026—Connections by glue bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D31/00—Superstructures for passenger vehicles
    • B62D31/02—Superstructures for passenger vehicles for carrying large numbers of passengers, e.g. omnibus

Definitions

  • the invention relates to a method for bonding a side wall of a vehicle body.
  • the low-floor car body side wall panel adopts a welding process, that is, the vehicle body side wall panel is welded to the vehicle body steel structure. There is welding deformation in the welding process of the side wall panel of the vehicle body, and the outer surface of the side wall panel of the vehicle body is not flat; after the side wall panel of the vehicle body is welded, it is also required to be painted, and the vehicle has a long production cycle.
  • the present invention provides a Low-floor car body side wall panel bonding method, characterized by: scribing positioning--pre-installation--secondary scribing--pre-gluing protection--adhesive surface grinding--adhesive surface cleaning--coating Surfactant--primer------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
  • the scribing positioning is based on the drawing requirements.
  • the bonding position of the side wall panel on the stainless steel skeleton is lined with the fishing line, the square and the tape measure, and the top side beam of the roof is used as the positioning reference line, and the horizontal measuring rod, R9990 is used.
  • the sampler measures the level and curvature of the side wall frame separately, determines the position and thickness of the limit block, and marks it with a marker.
  • Pre-installation is to pre-install all the side wall panels after the limit block is pasted according to the label.
  • the pre-installation sequence is first down and then on. From one end to two ends, the lowermost end plate of the car body needs to be combined with the lower side beam of the chassis.
  • the sample calibrates the level and curvature of the side wall skeleton separately, and adjusts the position and thickness of the limit block.
  • the secondary scribe line is the position of the clamp on the side wall panel, the position of the clamp and the position of the glue on the side wall panel after the pre-installation of the side wall panel is marked with a marker.
  • the pre-coating protection is to protect the stainless steel skeleton and the side wall panel from contaminated parts along the glue-coated part, so as to prevent the glue from overflowing after being pressed and contaminating the non-adhesive parts. After the protection is completed, press the upper and lower parts.
  • the car body side wall panel is sequentially bonded from one end to the second end.
  • Bonding is to place the side wall panel of the car body on the limit block, adjust the position of the side wall panel of the car body, adjust the flatness and the width of the gap again, ensure that the tolerance of the drawing is within the tolerance range of the drawing, and then push the side wall panel of the car body. Fasten with clamps and clamps. Immediately make up the glue for the missing parts. The bonding should be completed before the adhesive is dry. After the clamp is fastened for 48 hours at room temperature not less than 30% RH, the clamp can be removed. .
  • the side wall of the car body is docked from the bottom to the top of the car body, and the order from the one end to the second end is sequentially bonded.
  • the lower end plate of the car body needs to be leveled with the lower side frame of the underframe to ensure the seam.
  • Horizontal straightness, the seam of the side wall of the car body is limited by 10mm thick pad, the upper side wall panel is bonded on the basis, the position of the side wall panel is finely adjusted after bonding, and the flatness of the surrounding side wall panel is measured again.
  • the width of the gap is guaranteed to be within the tolerances allowed by the drawings, and is fastened with clamps and clamps. The clamp can be removed after the clamp is tightened for 48 hours at room temperature, no less than 30% RH.
  • the low-floor car body side wall panel adopts a bonding process, that is, the side wall panel of the vehicle body is bonded to the steel structure of the vehicle body, there is no problem of adhesive deformation, and the outer surface of the side wall panel of the vehicle body is uneven; the coating will be directly finished.
  • the side wall panels of the car body are bonded to the steel structure of the car body to shorten the production cycle.
  • the method of the invention comprises: scribing positioning, pre-assembly, secondary scribing, pre-coating protection, bonding surface grinding, bonding surface cleaning, coating surface activator, primer coating, glue coating, bonding, body side Decking, wall-coating, sealing, cleaning and curing. Specific steps are as follows:
  • the bonding position of the side wall panels on the stainless steel skeleton is lined by the fishing line, the square and the tape measure, and the roof side beam is used as the positioning reference line.
  • Use horizontal scale, R9990 The sampler measures the level and curvature of the side wall frame separately, determines the position and thickness of the limit block, and marks it with a marker.
  • the pre-installation sequence is first down and then on. From one end to two ends, the lowermost end of the car body needs to be leveled with the lower side of the underframe to ensure the straightness of the seam. Seat side wall panel butt joint, use The 10mm thick pad is limited to the upper side wall panel.
  • the pre-installation process uses a horizontal scale and a curved scale to calibrate the horizontality and curvature of the side wall skeleton, and adjust the position and thickness of the limit block.
  • the non-adhesive parts of the stainless steel skeleton and the side wall panels are protected along the glue-coated parts without the transfer tape, so as to prevent the glue from being contaminated and overflowing the non-adhesive parts.
  • the front side and the upper side are sequentially attached, and the side wall panels of the vehicle body are sequentially bonded from one end to the second end.
  • primer matching agent After the surface activator is completely dried, a small amount of primer matching agent is applied, and a primer is applied along the same portion in the same direction to ensure uniformity and no leakage. Pay attention to protect the bonding surface from contamination during the waiting process.
  • the glue is continuously and evenly applied to the part to be adhered by the glue gun, and the phenomenon of breaking the glue cannot occur. If the limit block is encountered during the glue, the glue should be applied along the outer side. Put glue before tapping 15-20cm , can operate.
  • the side wall panels of the vehicle body are sequentially bonded from bottom to top and sequentially from one end to two ends.
  • the lowermost end of the car body needs to be leveled with the lower side of the underframe to ensure the horizontal straightness of the seam.
  • Seat side wall panel butt joint, use 10mm The thick pad is limited, the upper side wall panel is bonded on the basis, the position of the side wall panel is finely adjusted after bonding, and the flatness and the width of the gap of the peripheral side wall panel are measured again to ensure the tolerance within the tolerance range of the drawing.
  • the clamp and clamp are fastened. At room temperature, not lower than In the 30% RH environment, the fixture can be removed after the clamp has been tightened for 48 hours.
  • a piece of glue is applied to test the curing time of the glue layer.
  • Bonding 48 After the hour, remove the clamps and clamps and apply sealant. Use non-transfer tape to protect the easily contaminated parts to prevent the glue from contaminating the non-adhesive parts.
  • the tape should be flat and free of air bubbles, leaving a gap of 1-2mm.
  • the seam is activated using an activator associated with the sealant. Pay attention to protect the bonding surface from contamination during the waiting process.
  • the sealant is continuously and evenly coated with a pneumatic glue gun. The adhesive should overflow the joint and no leaked parts are allowed. Put glue before tapping 15-20cm , can operate. After applying the sealant, use a squeegee to flatten all the seams and remove the tape.
  • the scraped joint seam needs to be treated with a smoothing agent matched with a sealant.
  • the surface after the glue is finished is not allowed to have defects such as bubbles, dents, impurities, hand marks, etc., and defects are immediately repaired if defects are found.
  • For adhesives that remain in the parts that are not allowed to be glued remove them with a cleaning agent.
  • Spraying the smoothing agent is not allowed to spray onto the uncoated body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Body Structure For Vehicles (AREA)
  • Finishing Walls (AREA)

Abstract

一种低地板车车体侧墙板粘接方法，包括划线定位--预装--二次划线--涂胶前保护--粘接面打磨--粘接面清洁--涂表面活化剂--涂底涂剂--涂胶--粘接--车体侧墙板对接--制涂胶样板--涂密封胶--清洁--固化。本发明低地板车车体侧墙板采用粘接工艺，即将车体侧墙板粘接到车体钢结构上，不存在粘接变形，车体侧墙板外表面不平的问题；直接将涂装完的车体侧墙板粘接到车体钢结构上，可缩短生产周期。

Description

低地板车车体侧墙板粘接方法
技术领域
本发明涉及一种车体侧墙板粘接方法。
背景技术
原有 低地板车车体侧墙板采用焊接工艺，即将车体侧墙板焊接到车体钢结构上。车体侧墙板焊接工艺存在焊接变形，车体侧墙板外表面不平的问题；车体侧墙板焊接后，还需涂装，车辆生产周期长。
发明内容
本发明的目的是提供一种 低地板车车体侧墙板粘接工艺，不存在粘接变形，车体侧墙板外表面平整，缩短生产周期。
为实现上述目的，本发明提供一种 低地板车车体侧墙板粘接方法，其特征在于：划线定位--预装--二次划线--涂胶前保护--粘接面打磨--粘接面清洁--涂表面活化剂--涂底涂剂--涂胶--粘接--车体侧墙板对接--制涂胶样板--涂密封胶--清洁--固化。
划线定位是根据图纸要求，对侧墙板在不锈钢骨架上的粘接位置，用鱼线、直角尺及卷尺进行划线定位，以车顶上边梁为定位基准线，用水平样尺、R9990样尺分别对侧墙骨架的水平度和弧度进行测量，确定限位块的位置和厚度，并用记号笔标示。
预装是待限位块按标示粘贴完毕后，对所有侧墙板进行预装，预装顺序先下后上，从一位端到二位端，车体最下端板需与底架下边梁调平定位，以保证对接缝的直线度，车体侧墙板对接缝，使用10mm厚垫板限位，在其基础上预装上层侧墙板，预装过程用水平样尺、弧度样尺分别对侧墙骨架的水平度和弧度进行校准，调整限位块的位置和厚度。
二次划线是侧墙板预装完毕后，将侧墙板上压块、夹具的位置及涂胶的位置用记号笔划线标示。
涂胶前保护是沿涂胶部位用不转移胶带，把不锈钢骨架及侧墙板易污染部位保护起来，以防胶受压后溢出，污染非粘接部位，保护完毕后，按先下后上，从一位端到二位端顺序依次粘接车体侧墙板。
粘接是将车体侧墙板置于限位块上，调整车体侧墙板位置，再次调整平整度和缝隙的宽度，保证在图纸允许的公差范围内，然后推紧车体侧墙板，用压块和夹具紧固，对于缺胶的部位立即补胶，粘接需在胶粘剂表干以前完成，在室温不低于30%RH环境下，夹具紧固48小时后，方可拆除夹具。
车体侧墙板对接是车体侧墙板由下至上，从一位端到二位端顺序的依次粘接，车体最下端板需与底架下边梁调平定位，以保证对接缝水平直线度，车体侧墙板对接缝使用10mm厚垫板限位，在其基础上粘接上层侧墙板，粘接后微调侧墙板位置，再次测量与周边侧墙板平整度和缝隙的宽度，保证在图纸允许的公差范围内，并用压块和夹具紧固，在室温，不低于30%RH环境下，夹具紧固48小时后，方可拆除夹具。
本发明 低地板车车体侧墙板采用粘接工艺，即将车体侧墙板粘接到车体钢结构上，不存在粘接变形，车体侧墙板外表面不平的问题；直接将涂装完的车体侧墙板粘接到车体钢结构上，可缩短生产周期。
具体实施方式
本发明方法：划线定位、预装、二次划线、涂胶前保护、粘接面打磨、粘接面清洁、涂表面活化剂、涂底涂剂、涂胶、粘接、车体侧墙板对接、制涂胶样板、涂密封胶、清洁、固化。具体步骤如下：
1 、划线定位
根据图纸要求，对侧墙板在不锈钢骨架上的粘接位置，用鱼线、直角尺及卷尺进行划线定位，以车顶上边梁为定位基准线。用水平样尺、 R9990 样尺分别对侧墙骨架的水平度和弧度进行测量，确定限位块的位置和厚度，并用记号笔标示。
2 、预装
待限位块按标示粘贴完毕后，对所有侧墙板进行预装。预装顺序先下后上，从一位端到二位端，车体最下端板需与底架下边梁调平定位，以保证对接缝的直线度。车体侧墙板对接缝，使用 10mm 厚垫板限位，在其基础上预装上层侧墙板。预装过程用水平样尺、弧度样尺分别对侧墙骨架的水平度和弧度进行校准，调整限位块的位置和厚度。
预装过程中，如车体侧墙板与不锈钢骨架不匹配，则需对车体侧墙板进行研配。
3 、二次划线
侧墙板预装完毕后，将侧墙板上压块、夹具的位置及涂胶的位置，用记号笔划线标示。
4 、涂胶前保护
沿涂胶部位用不转移胶带，把不锈钢骨架及侧墙板易污染部位保护起来，以防胶受压后溢出污染非粘接部位。
保护完毕后，按先下后上，从一位端到二位端顺序的依次粘接车体侧墙板。
5 、粘接面打磨
使用百洁布或打磨砂纸将粘接面，打磨至表面出现新鲜面划痕即可。
6 、粘接面清洁
用胶粘剂配套清洗剂将打磨区域清洁干净。等待过程中要注意保护粘接面不受污染。
7 、涂表面活化剂
用干净的无纺布或吸水纸蘸取少量的胶粘剂配套的表面活化剂，沿同一个方向清洁粘接面，只擦一次，并立即用干燥干净的无纺布顺着同一个方向擦去多余的活化剂。等待过程中要注意保护粘接面不受污染。
8 、涂底涂剂
待表面活化剂完全干燥后，取少许胶粘剂配套的底涂剂，沿待粘接部位顺同一方向涂覆一层底涂剂，保证均匀，勿漏涂。等待过程中要注意保护粘接面不受污染。
9 、涂胶
待底涂剂干燥后，用胶枪连续均匀地将胶施于待粘部位，不能出现断胶的现象，打胶时若遇到限位垫块应沿外侧进行施胶。打胶前要放胶 15-20cm ，才可以操作。
10 、粘接
将车体侧墙板置于限位块上，调整车体侧墙板位置，再次调整平整度和缝隙的宽度，保证在图纸允许的公差范围内，然后推紧车体侧墙板，用压块和夹具紧固，对于缺胶的部位应该立即补胶。粘接必须在胶粘剂表干以前完成，如胶粘剂表干则需重新涂胶。在室温，不低于 30%RH 环境下，夹具紧固 48 小时后，方可拆除夹具。在此期间不允许在车体内进行任何工序的施工作业，不能移动车体。
11 、车体侧墙板对接
车体侧墙板由下至上，从一位端到二位端顺序的依次粘接。车体最下端板需与底架下边梁调平定位，以保证对接缝水平直线度。车体侧墙板对接缝，使用 10mm 厚垫板限位，在其基础上粘接上层侧墙板，粘接后微调侧墙板位置，再次测量与周边侧墙板平整度和缝隙的宽度，保证在图纸允许的公差范围内，并用压块和夹具紧固。在室温，不低于 30%RH 环境下，夹具紧固 48 小时后，方可拆除夹具。
12 、制涂胶样板
制涂胶样板一块，检测胶层固化时间。
13 、涂密封胶
粘接 48 小时后去掉压块和夹具，涂密封胶。用不转移胶带，把易污染部位保护起来，以防胶污染非粘接部位，胶带要贴平整，无气泡，留出 1-2mm 的间隙。 使用密封胶配套的活化剂活化接缝处。等待过程中要注意保护粘接面不受污染。 沿车体钢结构和侧墙板胶缝及车体侧墙板对接缝，用气动胶枪连续均匀地涂密封胶，胶粘剂要溢出接缝，不允许有漏涂的部位。打胶前要放胶 15-20cm ，才可以操作。涂密封胶后，用刮板将所有胶缝刮平，去保护胶带。
刮完的连接缝需要使用密封胶配套的平滑剂进行处理，打完胶后的表面不允许有气泡，凹痕，杂质，手痕等缺陷，如发现缺陷立即修补。对残留在不允许打胶部位的胶粘剂，使用密封胶配套的清洁剂去除掉。
注意：喷平滑剂时不允许喷到未打胶车体上。
14 、清理现场
清理收拾所使用的设备、工装、工具、辅助材料，清理现场生产时产生的垃圾。
15 、固化
在室温，不低于 30%RH 环境下，固化 15 天。在此期间不允许在车体内进行任何工序的施工作业，不能移动车体。为防止人为的破坏，在车体门口贴上'胶粘剂未干，请勿触摸'字样，必要时可拉上警戒线。

Claims (7)

  1. 一种 低地板车车体侧墙板粘接方法，其特征在于：
    划线定位--预装--二次划线--涂胶前保护--粘接面打磨--粘接面清洁--涂表面活化剂--涂底涂剂--涂胶--粘接--车体侧墙板对接--制涂胶样板--涂密封胶--清洁--固化。
  2. 根据权利要求1所述的低地板车车体侧墙板粘接方法，其特征在于：划线定位是根据图纸要求，对侧墙板在不锈钢骨架上的粘接位置，用鱼线、直角尺及卷尺进行划线定位，以车顶上边梁为定位基准线，用水平样尺、R9990样尺分别对侧墙骨架的水平度和弧度进行测量，确定限位块的位置和厚度，并用记号笔标示。
  3. 根据权利要求1所述的低地板车车体侧墙板粘接方法，其特征在于：预装是待限位块按标示粘贴完毕后，对所有侧墙板进行预装，预装顺序先下后上，从一位端到二位端，车体最下端板需与底架下边梁调平定位，以保证对接缝的直线度，车体侧墙板对接缝，使用10mm厚垫板限位，在其基础上预装上层侧墙板，预装过程用水平样尺、弧度样尺分别对侧墙骨架的水平度和弧度进行校准，调整限位块的位置和厚度。
  4. 根据权利要求1所述的低地板车车体侧墙板粘接方法，其特征在于：二次划线是侧墙板预装完毕后，将侧墙板上压块、夹具的位置及涂胶的位置用记号笔划线标示。
  5. 根据权利要求1所述的低地板车车体侧墙板粘接方法，其特征在于：涂胶前保护是沿涂胶部位用不转移胶带，把不锈钢骨架及侧墙板易污染部位保护起来，以防胶受压后溢出，污染非粘接部位，保护完毕后，按先下后上，从一位端到二位端顺序依次粘接车体侧墙板。
  6. 根据权利要求1所述的低地板车车体侧墙板粘接方法，其特征在于：粘接是将车体侧墙板置于限位块上，调整车体侧墙板位置，再次调整平整度和缝隙的宽度，保证在图纸允许的公差范围内，然后推紧车体侧墙板，用压块和夹具紧固，对于缺胶的部位立即补胶，粘接需在胶粘剂表干以前完成，在室温不低于30%RH环境下，夹具紧固48小时后，方可拆除夹具。
  7. 车体侧墙板对接是车体侧墙板由下至上，从一位端到二位端顺序的依次粘接，车体最下端板需与底架下边梁调平定位，以保证对接缝水平直线度，车体侧墙板对接缝使用10mm厚垫板限位，在其基础上粘接上层侧墙板，粘接后微调侧墙板位置，再次测量与周边侧墙板平整度和缝隙的宽度，保证在图纸允许的公差范围内，并用压块和夹具紧固，在室温，不低于30%RH环境下，夹具紧固48小时后，方可拆除夹具。
PCT/CN2012/087273 2012-08-23 2012-12-24 低地板车车体侧墙板粘接方法 WO2014029185A1 (zh)

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