WO2024066534A1 - 一种无顶杆多腔弯头成型模具及其操作方法 - Google Patents

一种无顶杆多腔弯头成型模具及其操作方法 Download PDF

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Publication number
WO2024066534A1
WO2024066534A1 PCT/CN2023/102664 CN2023102664W WO2024066534A1 WO 2024066534 A1 WO2024066534 A1 WO 2024066534A1 CN 2023102664 W CN2023102664 W CN 2023102664W WO 2024066534 A1 WO2024066534 A1 WO 2024066534A1
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Prior art keywords
cavity
mold frame
plate
mold
fixed
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PCT/CN2023/102664
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English (en)
French (fr)
Inventor
于进杰
饶攀
马胜
冯锦荣
黄桑
赵浪
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临海伟星新型建材有限公司
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Publication of WO2024066534A1 publication Critical patent/WO2024066534A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2602—Mould construction elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/38—Cutting-off equipment for sprues or ingates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/24—Pipe joints or couplings

Definitions

  • the invention belongs to the technical field of molds, and in particular relates to a multi-cavity elbow forming mold without a push rod and an operating method thereof.
  • the object of the present invention is to provide a multi-cavity elbow forming mold without a push rod and an operating method thereof.
  • a multi-cavity elbow forming mold without a push rod comprises an upper composite plate, a fixed mold frame, a movable mold frame and a lower composite plate, an upper cavity is arranged in the fixed mold frame, a lower cavity is arranged in the movable mold frame, a pressure strip is arranged between the fixed mold frame and the movable mold frame, a slider is inclined in the lower cavity, a core is arranged on the inner side of the slider, the angle formed by the inclination of the cores on both sides is consistent with the angle of the elbow, a plurality of mold cavities are formed between the upper cavity, the lower cavity and the core, a push plate is arranged on the inner side of the upper composite plate, a main flow channel is arranged on the fixed mold frame, the main flow channel is divided into multiple branch flow channels, and extends to each mold cavity in the direction of the upper cavity respectively, a pulling rod passes through the upper composite plate and the pushing plate in sequence and extends to the main flow channel, a pulling and pushing plate screw for limiting the mold opening
  • a first cavity and a second cavity are provided between the fixed mold frame and the movable mold frame, the distance the first cavity extends toward the fixed mold frame is equal to the distance the second cavity extends toward the fixed mold frame, the distance the first cavity extends toward the movable mold frame is smaller than the distance the second cavity extends toward the movable mold frame, one end of the push plate screw is fixed on the push plate, and the other end extends into the first cavity, one end of the limit screw is fixed on the upper composite plate, and the other end extends into the second cavity.
  • a flow channel elastic mechanism for separating the pulling rod and the flow channel is provided in the push plate.
  • the elastic runner mechanism includes a spring and a connecting block.
  • the connecting block is connected to the upper composite plate through a spring and passes through the push plate.
  • the spring In the closed mold state, the spring is in a compressed state.
  • the connecting block applies elastic force to the main flow channel being formed, thereby reducing the difficulty of separating the runner from the pull rod in the later stage.
  • the iron hook mechanism includes a U-shaped fixing plate and a guide plate, and one side of the opening end of the U-shaped fixing plate is provided with A fixed connection structure is provided, and the closed end of the same side of the U-shaped fixed plate with the fixed connection structure is connected to the movable mold frame.
  • the fixed connection structure is embedded in the side groove of the fixed mold frame.
  • One end of the guide plate is inserted into the U-shaped groove of the U-shaped fixed plate, and the side of the other end is fixed on the upper composite plate.
  • the guide plate moves with the mold opening between the upper composite plate and the fixed mold frame, and further limits the mold opening distance between the upper composite plate and the fixed mold frame.
  • an inclined limit groove is provided on the inner wall of the lower cavity, which is used to install a slider.
  • An inclined guide column is provided on the fixed mold frame, which passes through the slider. The opening of the fixed mold frame and the movable mold frame enables the inclined guide column to drive the slider to slide obliquely, thereby realizing the demolding of the elbow product.
  • connection between the branch channel and the mold cavity is a point gate with a gate diameter of 1-3 mm, and the diameter of the end of the pulling rod connected to the main channel is 2-5 mm, so as to better separate them.
  • An operating method of the above-mentioned forming mold comprises the following steps:
  • the fixed mold frame and the movable mold frame are in a closed state under the action of the U-shaped fixed plate.
  • the upper plate and the fixed mold frame are separated first.
  • the flow channel formed in the branch flow channel is separated from the product, and the formed branch flow channel and the main flow channel are pulled out of the fixed mold frame.
  • the elastic flow channel mechanism applies elastic force to the main flow channel, and the guide plate moves with the upper plate;
  • the core pulling direction of the product is on both sides, and the products are arranged in a straight line, which saves mold space, doubles the number of cavities, and greatly improves production efficiency;
  • the simple three-plate mold structure can realize the automatic separation of the runner and the product, eliminating the need for manual trimming of the product gate, thus reducing the labor intensity;
  • Fig. 1 is a cross-sectional view of the present invention
  • FIG2 is a schematic diagram of the three-dimensional structure of the iron hook mechanism of the present invention.
  • FIG3 is a schematic diagram of the arrangement of the slider of the present invention.
  • FIG4 is a schematic diagram of the structure inside the fixed mold frame of the present invention.
  • FIG. 5 is a schematic diagram of the structure inside the movable mold frame of the present invention.
  • a multi-cavity elbow forming mold without a push rod includes an upper composite plate 1, a fixed mold frame 2, a movable mold frame 3, a lower composite plate 4, a slider 5, a pulling rod 6, a pulling and pushing plate screw 7, a limit screw 8, an iron hook mechanism 9 and a ballistic flow channel mechanism 10.
  • the inner side of the upper composite plate 1 connected to the fixed mold frame 2 is provided with a pushing plate 11, a main flow channel is opened on the side of the fixed mold frame 2, an upper mold cavity is provided in the fixed mold frame 2, a lower mold cavity is provided in the movable mold frame 3, a pressure strip is provided between the fixed mold frame 2 and the movable mold frame 3, an inclined guide column 23 is provided on the fixed mold frame 2, and an inclined limit groove 31 is opened on the inner wall of the lower mold cavity
  • the limit groove 31 is used to install the slider 5.
  • the inner side of the slider 5 is provided with a core 51. The angle formed by the inclination of the core 51 on both sides is consistent with the angle of the elbow.
  • the upper cavity, the lower cavity and the core 51 form multiple mold cavities.
  • the main channel is divided into multiple branch channels.
  • the branch channels extend to each mold cavity in the direction of the upper cavity.
  • the pull rod 6 passes through the upper composite plate 1 and the push plate 11 in turn and extends to the main channel.
  • the elastic flow channel mechanism 10 includes a spring 101 and a connecting block 102.
  • the connecting block 102 is connected to the upper composite plate 1 through the spring 101 and passes through the push plate 11.
  • a first cavity 21 and a second cavity 22 are provided between the fixed mold frame 2 and the movable mold frame 3 .
  • the distance that the first cavity 21 extends toward the fixed mold frame 2 is equal to the distance that the second cavity 22 extends toward the fixed mold frame 2.
  • the distance that the first cavity 21 extends toward the movable mold frame 3 is smaller than the distance that the second cavity 22 extends toward the movable mold frame 3.
  • the pull-pull plate screw 7 is fixed on the push plate 11, and the other end extends into the first cavity 21.
  • One end of the limit screw 8 is fixed on the upper composite plate 1, and the other end extends into the second cavity 22.
  • the pull-pull plate screw 7 is used to limit the mold opening distance between the upper composite plate 1 and the fixed mold frame 2.
  • the limit screw The wire 8 is used to limit the mold opening distance between the upper composite plate 1 and the push plate 11.
  • the iron hook mechanism 9 includes a U-shaped fixed plate 91 and a guide plate 92.
  • a fixed connection structure 911 is provided on one side of the open end of the U-shaped fixed plate 91.
  • the closed end of the same side of the U-shaped fixed plate 91 with the fixed connection structure 911 is connected to the movable mold frame 3.
  • the fixed connection structure 911 is embedded in the side groove of the fixed mold frame 2.
  • One end of the guide plate 92 is inserted into the U-shaped groove of the U-shaped fixed plate 91, and the side of the other end is fixed on the upper composite plate 1.
  • a push plate screw 7 and a limit screw 8 are provided on each side.
  • An operating method of a multi-cavity elbow forming mold without a push rod comprises the following steps:
  • the fixed mold frame 2 and the movable mold frame 3 are in a closed state under the action of the U-shaped fixing plate 91.
  • the upper composite plate 1 and the fixed mold frame 2 are separated first.
  • the connection point between the branch channel and the molded product is disconnected, and the flow channel formed in the branch channel is separated from the product.
  • the formed branch channel and the main channel are pulled out of the fixed mold frame 2 together.
  • the elastic flow channel mechanism 10 applies elastic force to the main channel to reduce the difficulty of later separation.
  • the guide plate 92 moves with the upper composite plate 1;

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

一种无顶杆多腔弯头成型模具及其操作方法，定模框（2）内设有上型腔，动模框（3）内设有下型腔，下型腔内倾斜设有滑块（5），两侧滑块（5）倾斜所成角度与弯头角度一致，滑块内侧设有芯子（51），上型腔、下型腔和芯子（51）之间构成多个模具腔，上复板（1）内侧设有推料板（11），定模框（2）上设有主流道，主流道分设成多支流道，分别朝上型腔方向延伸至各个模具腔处，拉料杆（6）依次穿过上复板（1）和推料板（11）延伸至流道处，推料板（11）上固定有用于限定上复板（1）和定模框（2）开模距离的拉推料板螺丝（7），上复板（1）上固定有用于限定上复板（1）和推料板（11）开模距离的限位螺丝（8），模具的侧边还设有对定模框（2）和动模框（3）进行闭模的铁拉钩机构（9）。实现了流道和制品自动分离，无需修剪浇口，无顶针痕，保证制品外观质量。

Description

一种无顶杆多腔弯头成型模具及其操作方法 技术领域
本发明属于模具技术领域，具体涉及一种无顶杆多腔弯头成型模具及其操作方法。
背景技术
针对目前常用PVC排水类45度弯头的模具结构，大多数的模具穴数是2腔，制品平放，浇口采用侧浇口为主，所以每个制品成型后，都需要人工剪，生产效率低，生产成本较高，难以满足需求量。如果增加腔数平放或者错位排布造成模具很大，流道流程比长，难成型。
发明内容
为解决上述问题，本发明的目的在于提供一种无顶杆多腔弯头成型模具及其操作方法。
为达到上述目的，提出以下技术方案：
一种无顶杆多腔弯头成型模具，包括上复板、定模框、动模框和下复板，定模框内设有上型腔，动模框内设有下型腔，定模框和动模框之间设有压条，下型腔内倾斜设有滑块，滑块内侧设有芯子，两侧芯子倾斜所成角度与弯头角度一致，上型腔、下型腔和芯子之间构成多个模具腔，上复板内侧设有推料板，定模框上设有主流道，主流道分设成多支流道，分别朝上型腔方向延伸至各个模具腔处，拉料杆依次穿过上复板和推料板延伸至主流道处，推料板上固定有用于限定上复板和定模框开模距离的拉推料板螺丝，上复板上固定有用于限定上复板和推料板开模距离的限位螺丝，模具的侧边还设有对定模框和动模框进行闭模的铁拉钩机构，保证开模的依次进行。
进一步地，定模框和动模框之间开设有第一空腔和第二空腔，第一空腔向定模框方向延伸的距离与第二空腔向定模框延伸的距离相等，第一空腔向动模框方向延伸的距离小于第二空腔向动模框延伸的距离，拉推料板螺丝的一端固定在推料板上，另一端延伸至第一空腔内，限位螺丝的一端固定在上复板上，另一端延伸至第二空腔内。
进一步地，推料板内设有用于将拉料杆和流道进行分离的弹流道机构。
进一步地，弹流道机构包括弹簧和连接块，连接块通过弹簧与上复板连接，并贯穿推料板，闭模状态下，弹簧处于压缩状态，随着开模的进行，弹簧给连接块作用力，连接块向成型的主流道施加弹力，降低后期流道与拉料杆分离的难度。
进一步地，铁拉钩机构包括U型固定板和导向板，U型固定板的开口端的一侧面设有 固定连接结构，U型固定板设有固定连接结构的同一侧面的封闭端与动模框连接，固定连接结构嵌入定模框的侧面凹槽中，导向板的一端插入U型固定板的U型槽中，另一端的侧面固定在上复板上，导向板随着上复板和定模框之间的开模而发生移动，对上复板和定模框的开模距离进行进一步限位。
进一步地，下型腔的内壁开设有倾斜的限位槽，限位槽用于安装滑块，定模框上设有斜导柱，斜导柱穿过滑块，定模框和动模框的开模使斜导柱带动滑块倾斜滑动，实现弯头制品的脱模。
进一步地，支流道与模具腔连接处为点浇口，浇口直径为1-3mm，拉料杆与主流道连接的端部的直径为2-5mm，使其更好分离。
一种上述的成型模具的操作方法，包括如下步骤：
1)注塑成型后，定模框和动模框在U型固定板的作用下处于关闭状态，随着开模的进行，上复板和定模框先分离，在拉料杆的作用下，支流道内成型的流道与制品分离，成型的支流道和主流道从定模框中拉出，同时弹流道机构向主流道施加弹力，导向板随着上复板移动；
2)继续开模，拉推料板螺丝对推料板进行限位，推料板和上复板分离，拉料杆与成型的主流道随之分离，成型流道掉落，分离过程中，限位螺丝对上复板和推料板之间的距离起到限位作用；
3)拆下U型固定板，对定模框和动模框进行开模，随着开模的进行，斜导柱带动滑块倾斜滑动，成型制品自动掉落。
本发明的有益效果在于：
1)制品抽芯方向在两侧，制品一字型排布，节省了模具空间，腔数增加一倍，大大提高了生产效率；
2)制品排布紧凑减少了流道的流程比，更有利于注塑成型；
3)通过简易的三板模结构，实现流道和制品自动分离，无需人工对制品浇口的修剪，降低了人工强度；
4)通过滑块两侧抽芯跟制品方向成一定角度，保证制品自动掉落，无顶针痕，保证制品外观质量。
附图说明
图1为本发明的剖视图；
图2为本发明的铁拉钩机构的立体结构示意图；
图3为本发明滑块的设置方式示意图；
图4为本发明的定模框内的结构示意图；
图5为本发明的动模框内的结构示意图。
图中：1、上复板；11、推料板；2、定模框；21、第一空腔；22、第二空腔；23、斜导柱；3、动模框；31、限位槽；4、下复板；5、滑块；51、芯子；6、拉料杆；7、拉推料板螺丝；8、限位螺丝；9、铁拉钩机构；91、U型固定板；911、固定连接结构；92、导向板；10、弹流道机构；101、弹簧；102、连接块。
具体实施方式
下面结合说明书附图对本发明做进一步地说明，但本发明的保护范围并不仅限于此。
如图1到图5所示，一种无顶杆多腔弯头成型模具，包括上复板1、定模框2、动模框3、下复板4、滑块5、拉料杆6、拉推料板螺丝7、限位螺丝8、铁拉钩机构9和弹流道机构10，上复板1与定模框2连接的内侧设有推料板11，定模框2侧开设有主流道，定模框2内设有上型腔，动模框3内设有下型腔，定模框2和动模框3之间设有压条，定模框2上设有斜导柱23，下型腔的内壁开设有倾斜的限位槽31，限位槽31用于安装滑块5，滑块5内侧设有芯子51，两侧芯子51倾斜所成角度与弯头角度一致，上型腔、下型腔和芯子51之间构成多个模具腔，主流道分成多支流道，支流道向上型腔方向延伸至各个模具腔处，拉料杆6依次穿过上复板1和推料板11延伸至主流道处，弹流道机构10包括弹簧101和连接块102，连接块102通过弹簧101与上复板1连接，并贯穿推料板11，定模框2和动模框3之间开设有第一空腔21和第二空腔22，第一空腔21向定模框2方向延伸的距离与第二空腔22向定模框2延伸的距离相等，第一空腔21向动模框3方向延伸的距离小于第二空腔22向动模框3延伸的距离，拉推料板螺丝7的一端固定在推料板11上，另一端延伸至第一空腔21内，限位螺丝8的一端固定在上复板1上，另一端延伸至第二空腔22内，拉推料板螺丝7用于限定上复板1和定模框2开模距离的，限位螺丝8用于限定上复板1和推料板11开模距离，铁拉钩机构9包括U型固定板91和导向板92，U型固定板91的开口端的一侧面设有固定连接结构911，U型固定板91设有固定连接结构911的同一侧面的封闭端与动模框3连接，固定连接结构911嵌入定模框2的侧面凹槽中，导向板92的一端插入U型固定板91的U型槽中，另一端的侧面固定在上复板1上，拉推料板螺丝7和限位螺丝8两侧各设有一个。
一种无顶杆多腔弯头成型模具的操作方法，包括如下步骤：
1)注塑成型后，定模框2和动模框3在U型固定板91的作用下处于关闭状态，随着开模的 进行，上复板1和定模框2先分离，在拉料杆6的作用下，支流道与成型制品的连接点断开，支流道内成型的流道与制品分离，成型的支流道和主流道一同从定模框2中拉出，同时弹流道机构10向主流道施加弹力，降低后期分离难度，导向板92随着上复板1移动；
2)继续开模，拉推料板螺丝7对推料板11进行限位，推料板11和上复板1分离，拉料杆6与成型的主流道随之分离，成型流道掉落，分离过程中，限位螺丝8对上复板1和推料板11之间的距离起到限位作用；
3)拆下U型固定板91，对定模框2和动模框3进行开模，随着开模的进行，斜导柱23带动滑块5倾斜滑动，成型制品自动掉落。

Claims (8)

  1. 一种无顶杆多腔弯头成型模具，包括上复板(1)、定模框(2)、动模框(3)和下复板(4)，定模框(2)内设有上型腔，动模框(3)内设有下型腔，定模框(2)和动模框(3)之间设有压条，其特征在于下型腔内倾斜设有滑块(5)，滑块(5)内侧设有芯子(51)，两侧芯子(51)倾斜所成角度与弯头角度一致，上型腔、下型腔和芯子(51)之间构成多个模具腔，上复板(1)内侧设有推料板(11)，定模框(2)上设有主流道，主流道分设成多支流道，分别朝上型腔方向延伸至各个模具腔处，拉料杆(6)依次穿过上复板(1)和推料板(11)延伸至主流道处，推料板(11)上固定有用于限定上复板(1)和定模框(2)开模距离的拉推料板螺丝(7)，上复板(1)上固定有用于限定上复板(1)和推料板(11)开模距离的限位螺丝(8)，模具的侧边还设有对定模框(2)和动模框(3)进行闭模的铁拉钩机构(9)。
  2. 如权利要求1所述的一种无顶杆多腔弯头成型模具，其特征在于定模框(2)和动模框(3)之间开设有第一空腔(21)和第二空腔(22)，第一空腔(21)向定模框(2)方向延伸的距离与第二空腔(22)向定模框(2)延伸的距离相等，第一空腔(21)向动模框(3)方向延伸的距离小于第二空腔(22)向动模框(3)延伸的距离，拉推料板螺丝(7)的一端固定在推料板(11)上，另一端延伸至第一空腔(21)内，限位螺丝(8)的一端固定在上复板(1)上，另一端延伸至第二空腔(22)内。
  3. 如权利要求2所述的一种无顶杆多腔弯头成型模具，其特征在于推料板(11)内设有用于将拉料杆(6)和流道进行分离的弹流道机构(10)。
  4. 如权利要求3所述的一种无顶杆多腔弯头成型模具，其特征在于弹流道机构(10)包括弹簧(101)和连接块(102)，连接块(102)通过弹簧(101)与上复板(1)连接，并贯穿推料板(11)。
  5. 如权利要求1所述的一种无顶杆多腔弯头成型模具，其特征在于铁拉钩机构(9)包括U型固定板(91)和导向板(92)，U型固定板(91)的开口端的一侧面设有固定连接结构(911)，U型固定板(91)设有固定连接结构(911)的同一侧面的封闭端与动模框(3)连接，固定连接结构(911)嵌入定模框(2)的侧面凹槽中，导向板(92)的一端插入U型固定板(91)的U型槽中，另一端的侧面固定在上复板(1)上。
  6. 如权利要求5所述的一种无顶杆多腔弯头成型模具，其特征在于下型腔的内壁开设有倾斜的限位槽(31)，限位槽(31)用于安装滑块(5)，定模框(2)上设有斜导柱(23)，斜导柱(23)穿过滑块(5)，定模框(2)和动模框(3)的开模使斜导柱(23)带动滑块 (5)倾斜滑动，实现弯头制品的脱模。
  7. 如权利要求6所述的一种无顶杆多腔弯头成型模具，其特征在于支流道与模具腔连接处为点浇口，浇口直径为1-3mm，拉料杆(6)与主流道连接的端部的直径为2-5mm。
  8. 一种如权利要求7所述的成型模具的操作方法，其特征在于包括如下步骤：
    1)注塑成型后，定模框(2)和动模框(3)在U型固定板(91)的作用下处于关闭状态，随着开模的进行，上复板(1)和定模框(2)先分离，在拉料杆(6)的作用下，支流道内成型的流道与制品分离，成型的支流道和主流道从定模框(2)中拉出，同时弹流道机构(10)对主流道施加弹力，导向板(92)随着上复板(1)移动；
    2)继续开模，拉推料板螺丝(7)对推料板(11)进行限位，推料板(11)和上复板(1)分离，拉料杆(6)与成型的主流道随之分离，成型流道掉落，分离过程中，限位螺丝(8)对上复板(1)和推料板(11)之间的距离起到限位作用；
    3)拆下U型固定板(91)，对定模框(2)和动模框(3)进行开模，随着开模的进行，斜导柱(23)带动滑块(5)倾斜滑动，成型制品自动掉落。
PCT/CN2023/102664 2022-09-30 2023-06-27 一种无顶杆多腔弯头成型模具及其操作方法 WO2024066534A1 (zh)

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