Shanghai Daoqin Plastics Co., Ltd.

        1. assembly front 准备 

        熟悉 product, 清点工 parts, 领齐辅 material and parts.

        1)首先熟悉该 product 图形, assembly has dimensions and has technology requirements, again combined assembly understanding structure, for 照组装图 material material mono material material in 组装图 upper in 位置, combined parts 领齐镙 filament and other parts.

        2) for parts mono upper parts 编号清点, 清洁工 parts, for parts 图检查 parts processing is full, has less need to and 时反馈(assembly responsibility need parts mono in product 图一起).

        3)接收辅 material material mono rear, for mono 24 small inner for mono 领齐辅 parts. material to need and 时反馈, and 间隔8 small 时跟踪反馈 one-time (一直 to mono has material 领齐方 can 停止跟踪).

        4) has 领出 辅 material in and versus 配 工 parts to 达时, need can use or is versus 符, 避免错订, 误订, has and toward process 师反映.

        5) for has elastic 簧 工 parts need in combined front good elastic is has pressure shrink 行程.

        6) hard 模 斜导柱, in front assembly one-time.

        2. assembly front process 顺序

        (1) cold water 进出标志, product 编号, as cold water, as 顶针孔 and 孔

        1)模 sheet/plate in to sheet/plate 存放区 rear, 8 small inner has assembly responsibility for product 图, 组装图做 good cold water 进出标记, product 编号.

        2)清洁每 工 parts, slip 槽, 螺钉孔, cold water inner material, assembly in formed loss 伤.

        3)A, B sheet/plate need in front time inner formed one-time cold water as.

        4)动模顶针 in parts one-time rear, and formed is slip and is 否畅通. (含扁顶针, 司筒针, and its it ejection plant/unit)

        5)核 for sheet/plate deep degree, 间隙, is and material versus combined.

        6)核 for elastic 簧孔, 撑柱孔 and solid sheet/plate, sheet/plate has 孔.

        (2)A, B sheet/plate 间隙, device 安装, 核查顶针 high degree dimensions.

        1) for 照模芯, frame high degree and versus for deep degree 检查A, B sheet/plate combined is has 适当 间隙.

        2)A, B sheet/plate combined front need 先安装 good device, ensure combined degree.

        3)动模 sheet/plate rear, for 照顶针图核查顶针 and other high degree dimensions. 并做出顶针 processing mono upper project dimensions. 连同顶针 processing process mono 一起转送.

        3. assembly process

        1) assembly 时, parts uniform force, filament for 角拧紧, ensure parts rear water 平, and parts and parts between for combined.

        2) in active 动部位 add lubricated 油, ensure mold combined process in 顺畅.

        3)配 combined 碰穿位, 插穿位 relatively more parts 时, 首次配 combined force degree in, due to front 步工序造 formed loss mold, effect/influence mold degree and quality.

        4) for upper effect/influence assembly and use 孔位, frame need abrasion 倒角. (顶针孔, 沉头孔例 outer)

        5)斜顶 in assembly in, 字码编号 need 统一, from to slip sheet/plate, sheet/plate, sheet/plate slip base/seat 同一组 need use 一 字码.

        6) mold upper slip block, pressure block, block, 斜导柱, 司筒针 and versus 近 工 parts need 做识别编码.

        7)司筒针顶部 relatively thick 时, in product 允许 情况 lower ensure high degree, anti product surface sink marks.

        4. assembly 基准

        (1)动定模 assembly 基准:

        1) testing sheet/plate, sheet/plate 基准边 is and versus combined.

        2) testing 动模芯, 定模芯 large small dimensions.

        3)动定模芯装进模 sheet/plate rear 塞规检查动定模芯 is and 基准边紧贴.

        (2)镶 parts assembly 基准:

        依图纸 示, parts has amount remove 基准 另一边.

        5. 配模红丹 requirements

        1)面 housing/shell requirements uniform, 此推方红丹稍 micro 黑一点(即胆面 ratio need 碰紧一点);喇叭网 requirements uniform, can 太紧; small 碰穿孔, 插穿位, uniform can.

        2) rear housing/shell: its 走胶情况而定, usually: 顶面网齿 and rear 侧端子 sheet/plate 插头处碰穿位红丹 requirements need ratio 推方紧一点, 两侧网齿 uniform can. has pressure block thick degree micro ratio high 一点(0.03MM∽0.005MM).

        6. assembly 结束

        1) assembly front good mold mono, and 时送交 has negative 责(修改 mold 同样)

        2) again 次检查顶针 sheet/plate is 否顺畅, 行位, is 否顺畅(修改 mold 同样)

        3)检查 mold 运动部位包括 hot runner system (修改 mold 同样)

        4)按 requirements in upper product 字码, type separation 码, (hard 模送EDM processing, outer mono process processing). type separation use 英文字码, product mold separation use 数字码. 特殊情况 must process can.

        5)检查配 combined is has 毛刺, 倒扣, gate 转折处 need 修模圆角.

        6)检查行位 pressure block solid rear, is slip 顺.

        7)第 one-time assembly mold formed rear 1 small inner 应清理完 formed sleeve/set parts 图, 组装图, product 图. 图纸按“A4”纸张 large small 叠放整齐. 定模图纸 as is is 一叠, 动模图纸 as is is 一叠, 组装图 and product as is 一叠. 改模图纸以当次修改 has material 叠放一起.

        8)因特情况 in mold trial front method 安装 工 parts, 经修模组 responsibility can rear, as 适当 处理, 应保留, need use parts box/case good, 放于修模工 parts 存放区, lower 次安装.

         injection molding mold structure and processing quality effect/influence parts products quality and production efficiency. mold production process in various fault/failure non more, lower is types Common fault/failure solutions.

         gate material difficult:

         in injection molding process in, gate viscous in gate sleeve/set inner, easy 脱出. mold opening 时, products cracks loss 伤. in addition, as must use copper rod from nozzle 处敲出, make 之松动 rear can demolding, heavy effect/influence production efficiency. this type of fault/failure main/primary causes is gate light degree 差, inner 孔圆周 direction has 刀痕.

         also has is material soft, use time rear small deformation or loss 伤, and nozzle 球面弧 degree small, make gate material in generate 铆头. gate sleeve/set relatively difficult processing, amount using/adopting standards parts, 如需自行 processing, 也应自 made or specialized 铰刀. 锥孔需经 研 abrasion 至Ra0.4 below/following. in addition, must gate material or gate ejection machine 构.

        导柱 loss 伤:

        导柱 in injection molding mold in main/primary toward function, ensure type and type molding in 任何情况 lower versus 碰, can 以导柱 as is force parts or parts use. in below/following types lower, injection 时动, will generate large toward force: (1)塑 parts thick requirements non-uniform 时, material through thick speed rate large, in generate relatively large pressure;(2)塑 parts 侧面不 for 称, 如阶梯形 separation type mold, versus for 两侧面 受 反 pressure versus and other.

        动, 定模偏移:

         large type mold, toward material speed rate different, and in 装模时受 mold heavy effect/influence, generate 动, 定模偏移. in this types lower, injection toward force will add in upper, mold opening 时导柱 surface 拉毛, loss 伤, heavy 时导柱 bending or 切断, 甚至无 method mold opening. is solution above issues, in mold separation type upper increase high strength 定位键四面各一, most has is using/adopting 圆柱键. 导柱孔 and separation 模面 垂直 degree important. in processing is using/adopting 动, for 准位置夹紧 rear, in upper one-time 镗完, this can ensure 动, 定模孔 同心 degree, make degree most small. in addition, and sleeve/set hot hardness 务必达 to design requirements.

        动模 sheet/plate bending:

         injection molding mold in injection 时, mold cavity inner melt plastics generate large pressure, generally in 600~1000公斤/ cm 2. mold manufacturing has heavy issues, 往往改变原 design dimensions, or 者 动模 sheet/plate use low strong/high degree sheet/plate 代替, in use 顶杆顶 material mold in, due to base/seat large, formed injection sheet/plate lower 弯. 故动模 sheet/plate must selection excellent 质钢材, need has thick degree, can use A3 and other low strong/high degree sheet/plate, in necessary 时, in sheet/plate lower 方设置支撑柱 or block, decrease small sheet/plate thick degree, improve/increase can force.

        顶杆 bending, fracture or material:

        自 made quality relatively good, is processing cost high, in usually selection standards parts, quality generally. and 孔 间隙 if large, 则出现漏 material, if 间隙太 small, in injection due to mold temperature rise high, 顶杆膨胀而卡死.

         more is, has 时顶杆 by ejection generally 距离就顶不动而折断, in lower one-time clamping this 段露出 顶杆不 can 复位而撞 bad 凹模. is solution this issues, heavy new abrasion, in front 端保留10~15 mm combined 段, in separation abrasion small 0.2 mm. has in assembly rear, must 严格检查起配 combined 间隙, generally in 0.05~0.08 mm inner, need ensure ejection machine can 进退自如.

         cooling defect or water water:

         injection molding mold cooling 效果直接 effect/influence products quality and production efficiency, cooling defect, products shrinkage large, or shrinkage non-uniform 而出现翘面 deformation and other defect. 另一方面模 overall or local hot, make mold can positive molding 而停产, heavy make and other active parts hot 胀卡死而 loss bad. cooling system design, processing product 形状而定, need is mold structure complex or processing difficult this system, especially is large in type mold need separation cooling issues.

        定距拉紧 machine 构失灵:

        摆钩, 搭扣之 type 定距拉紧 machine generally used for 定模抽芯 or 一 二次 demolding mold in, this category of machine in mold 两侧面 formed for 设置, its as requirements must 同步, clamping meanwhile 搭扣, mold opening to 一定位置 meanwhile 脱钩.

        一旦失 同步, 势必造 formed by mold sheet/plate 歪斜而 loss bad, this machine parts need has relatively high rigid degree and wear resistance, adjustment very difficult, machine lifespan relatively short, amount use, can use other machine 构. in force comparison small lower can using/adopting elastic launch methods, in force comparison large lower can using/adopting rear type sliding, formed 抽芯动 as rear again separation structure, in large type mold upper can using/adopting liquid pressure 油缸抽芯.

        斜销 slip block 式抽芯 machine loss bad:

         this type of machine relatively 常出现 毛病 large more is processing upper to and use material small, main/primary has below/following issues: 斜销倾角A large, advantages is can in relatively short mold opening inner generate relatively large 抽芯距. is large 倾角A, 当抽拔 force F is value 时, in process in 斜销受 to bending force P=F/COSA, large, easy 出现斜销 deformation and abrasion loss.

         meanwhile, for slip block generate toward upper force N=FTGA也越 large, force make slip block for inner toward positive pressure increase large, from increase slip block sliding 时 摩 scratch retardant force. easy formed sliding 不顺, abrasion loss. according to experience, 倾角A不应 large 于25°.

        导槽 long degree small:

         has mold 因受模 sheet/plate 面积限 made, long degree small, slip block in 抽芯动 as rear 露出导槽 outer 面, this in rear stage/phase and clamping 复位初 stage/phase easy formed slip block 倾斜, especially is in clamping 时, slip block 复位不顺, make slip block loss 伤, pressure bad. according to experience, slip block formed 抽芯动 as rear, in slip inner long degree small 于导槽 full long 2/3.

         in design, manufacturing mold 时, according to parts quality requirements, amount large small, manufacturing requirements and other specific 情况, can meet/satisfy products requirements, in mold structure upper also most can 靠, easy processing, make low, this is most mold.

        7. as process in specification

        1) assembly mold process in, parts need use parts box/case good, 并整齐摆放于桌面.

        2)工 parts, 图纸一起按 process process/workflow 传送并做 good 交接.

        3) as process in maintain 台面整洁. 即时清理 as process in generate waste.

        4) as formed rear, 即时清理工 as and as 业区, 并 辅助工 tool also to 位.