WO2022227546A1 - 一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构 - Google Patents

一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构 Download PDF

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Publication number
WO2022227546A1
WO2022227546A1 PCT/CN2021/133380 CN2021133380W WO2022227546A1 WO 2022227546 A1 WO2022227546 A1 WO 2022227546A1 CN 2021133380 W CN2021133380 W CN 2021133380W WO 2022227546 A1 WO2022227546 A1 WO 2022227546A1
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Prior art keywords
straight
block
guide
rail
ejection
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PCT/CN2021/133380
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English (en)
French (fr)
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梁正华
王华良
林连明
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浙江凯华模具有限公司
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Publication of WO2022227546A1 publication Critical patent/WO2022227546A1/zh

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    • 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
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C45/4407—Removing or ejecting moulded articles for undercut articles by flexible movement of undercut portions of the articles
    • 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
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B29C45/332—Mountings or guides therefor; Drives therefor

Definitions

  • the invention relates to the related field of injection moulds, in particular to a deformation and upside down mechanism for straight-top extrusion plastic parts of an injection mould of an automobile bumper.
  • the clip wire Due to the need of assembly, some plastic parts usually require that the clip wire should not be exposed, so it is not possible to design the clip wire to be exposed according to the traditional method, such as a car bumper. Therefore, the external parting is usually designed, and the product is released from the inverted buckle through the inclined top release mechanism, so as to complete the product ejection and removal. , and customers do not accept exposed clips affecting sales.
  • an injection mold and its straight top mechanism disclosed in the Chinese patent document, its bulletin number CN106079295B
  • the straight top block is provided with a counterbore perpendicular to the direction of movement of the straight top block, and the counterbore is provided with Axial sliding piston
  • the end of the piston extends vertically with a spring needle
  • a through groove is opened in the piston
  • the through groove and the inner wall of the counterbore form a sealed closed cavity
  • a gear is arranged in the cavity
  • the through groove is
  • the bottom of the groove is provided with a rack that meshes with the gears
  • the straight top mechanism also includes a transmission rod that is penetrated in the straight top rod.
  • the transmission rod is fixed on the bottom plate of the mold and a section of the transmission rod is placed in the straight top block. Passing through the gear, a section of the transmission rod is set as a helical section, and a through hole meshing with the helical section is opened in the middle of the gear. process, but it is difficult for this mechanism to produce products that do not leak from the clamping line, and it is difficult to eject the products that do not leak.
  • the present invention is to overcome the problems of the above-mentioned prior art, such as exposure of the clip line, influence on appearance, influence on sales, etc., and provides an automobile bumper injection mold straight-top extrusion plastic part deformation and upside down mechanism, which is convenient for the production of products with no clip line exposed. , so that the product can be released from the upside down by extrusion deformation after the mold is opened, so as to realize the demoulding of the upside down product, simplify the mold structure and reduce the cost of the mold.
  • the utility model relates to a deformation and upside-down mechanism for a straight top extrusion plastic part of an injection mold of an automobile bumper, which comprises a lower cladding plate, a core is arranged on the lower cladding plate, a thimble plate is arranged between the lower cladding plate and the core, and a straight top is also provided.
  • Squeeze off the upside down assembly the straight top squeeze off the upside down assembly is arranged between the ejector plate and the core, the straight top squeeze off the upside down structure includes a straight top block for ejecting the injection molded part and a The ejector drive assembly for driving the straight top block.
  • the core is used to form an injection molded part
  • the ejector plate cooperates with the straight top extrusion and upside down assembly to eject the product upside down.
  • the ejector rod has different stroke distances when it is ejected.
  • the injection molded parts that can meet the requirements of the clamping line without leakage, it must have an inner buckle structure, which is generally difficult to achieve through traditional direct ejection.
  • the squeezing and upside down structure makes the injection molded parts squeezed and deformed, and then pushes out the injection molded parts, which is convenient and quick to operate, and meets the requirements of products that do not leak from the clamping line.
  • the ejection drive assembly includes a straight ejector rod, a connecting slider for connecting the straight ejector rod and the straight ejector block, and a guide block for controlling the movement direction of the straight ejector block, and the straight ejector block and the straight ejector rod are at the top There are different travel distances when leaving.
  • the lower end of the straight ejector rod is connected to the ejector plate, the upper end is connected to the connecting slider, the straight ejection block includes a connection block for connecting with the ejection drive assembly, and the side of the straight ejection block is slidably arranged on the guide block
  • the bottom of the straight top block is slidably arranged on the connecting slider; the guide block changes the ejection direction of the straight top block, and the connecting slider makes the straight top block move in the lateral direction.
  • the straight ejector rod is used to cooperate with the ejector plate to facilitate the ejection under the action of the ejector plate.
  • the connecting slide block and the guide block work together, that is, the guide block changes the ejection direction of the straight top block, and the connecting slider makes the straight top block horizontally. It moves up and down, and has different travel distances with the guide rails, which is convenient for extruding and ejecting the injection molded parts, and has a simple structure, which simplifies the mold structure and reduces the cost of the mold.
  • the connecting slider includes a sliding rail, a sliding groove is provided at the bottom of the connecting block, and the sliding rail and the sliding groove are slidably arranged.
  • the straight top block When the straight top block is ejected, it moves laterally under the action of the guide block, and the setting of the slide rail limits the horizontal movement of the straight top block and improves the accuracy of the ejection trajectory of the straight top block.
  • the connecting slider further includes a fixing block, the fixing block is arranged at the bottom of the sliding rail, and the fixing block and the sliding rail are arranged in an integrated structure; or the fixing block and the sliding rail are arranged in a split structure.
  • the fixed block is used to connect the straight ejector rod, and the fixed block and the slide rail are set in one piece, which is easy to install and manufacture; when the fixed block and the slide rail are set as a separate structure, the fixed block is made of iron material, and the slide rail is made of copper material, which avoids straight The top block gets stuck on the slide rail, and the split setup reduces costs.
  • the core is provided with a guide hole for the straight ejector rod to pass through, and a guide sleeve for preventing the straight ejector rod from being stuck is arranged in the guide hole.
  • the guide sleeves are arranged in pairs, and the paired guide sleeves are They are respectively arranged on the upper and lower sides of the guide hole. The arrangement of the guide hole is convenient for the core to limit the ejection direction of the guide hole, and the guide sleeve plays a guiding role for the straight ejector rod.
  • the guide block is provided with a guide rail for controlling the ejection direction of the straight top block
  • a pulley is arranged on the side of the straight top block, the pulley is arranged in the guide rail, and the pulley drives the straight top block to move along the guide rail.
  • the arrangement of the pulley makes the straight top block slide more smoothly and stably in the guide rail of the guide block, thereby changing the ejection direction of the straight top block.
  • the guide rail includes a straight rail, a left inclined rail and a right inclined rail arranged in sequence from bottom to top, the length of the right inclined rail is greater than the length of the left inclined rail, and the length of the right inclined rail is also greater than the length of the straight rail .
  • the straight top block first moves up along the track to avoid jamming, and then moves to the left along the left inclined track to extrude the injection molded parts inward. After the front and rear molds are separated, the straight top block moves along the The track is reset to its original position to the right.
  • the guide rail is set as a variable guide rail
  • the guide block includes a base, a guide rail and a plurality of moving blocks for driving the deformation of the guide rail
  • the moving block is provided with a guide groove for forming a guide rail
  • the guide rails are arranged in pairs and are respectively arranged on the left and right sides of the guide groove.
  • the guide rail is set as a variable guide rail.
  • the force application direction of the straight top extrusion is different.
  • the inclination direction of the guide rail is changed by moving the moving block, so the setting of the variable guide rail is convenient to adapt to different injection molded parts, and the versatility is high.
  • the present invention has the following beneficial effects: facilitating the production of products with no exposed clamping lines, enabling the mold to release the product from undercuts through extrusion deformation after the module is opened, realizing demoulding of the undercut products, simplifying the mold structure, and reducing the cost of the mold.
  • Figure 1 is a schematic structural diagram of a straight-top extrusion tripping assembly
  • Fig. 2 is the partial structure schematic diagram of the straight-top extrusion and upside-down buckle mechanism of the injection mold
  • Figure 3 is a sectional view of the injection mold straight-top extrusion and tripping mechanism when the mold is opened;
  • Figure 4 is a sectional view of the injection mold straight-top extrusion demolition mechanism during demolding
  • Figure 5 is a sectional view of the injection mold straight-top extrusion tripping mechanism in the clamping state
  • Fig. 6 is the structural representation of the guide rail in embodiment 1;
  • Fig. 7 is the structural representation of the guide rail in embodiment 2;
  • Embodiment 8 is a cross-sectional view of a guide rail in Embodiment 2.
  • an automobile bumper injection mold straight-top extrusion plastic part deformation and upside down mechanism includes an upper cladding plate 11 and a lower cladding plate 7.
  • a hot runner plate 12 is connected below, a cavity 13 is arranged below the hot runner plate 12, a die foot 8 is connected to the lower compound plate 7, a core 10 is connected to the die foot 8, and the cavity 13 and the lower compound plate are connected.
  • a thimble plate 9 is arranged between the 7, and the thimble plate 9 includes a lower thimble plate 902 arranged close to the lower double plate 7 and an upper thimble plate 901 arranged close to the core 10.
  • the ejector and inverted buckle assembly includes a straight ejector block 1 and an ejector drive assembly that drives the straight ejector block 1 to be ejected.
  • the ejector drive assembly includes a straight ejector rod for ejection 4.
  • the connecting slider 3 used to connect the straight top rod 4 and the straight top block 1 and the guide block 2 used to control the movement direction of the straight top block 1.
  • the straight top block and the straight top rod have different stroke distances when they are ejected. .
  • the straight top block 1 includes a connecting block 101 for connecting with the ejection drive assembly, the bottom of the connecting block 101 is connected with the connecting slider 3, the guide block 2 is fixed on the side wall of the connecting block 101, and the guide block 2 is fixed on the core 10, as shown in FIG. 6, a guide rail 201 for guiding is provided on the guide block 2, a pulley 6 is provided on the side wall of the connecting block 101, and the pulley 6 is arranged in the guide rail 201 to realize the connecting block 101 and the guide block 2.
  • the sliding connection between the connecting block 101 is driven by the pulley 6 to slide along the guide block 2 .
  • the guide block changes the ejecting direction of the straight top block, and the connecting slider makes the straight top block move in the lateral direction.
  • the guide rail 201 includes a straight rail 2011 , a left inclined rail 2012 and a right inclined rail 2013 arranged in sequence from bottom to top.
  • the length of the right inclined rail 2013 is greater than the length of the left inclined rail 2012
  • the length of the right inclined rail 2013 Also greater than the length of the straight track 2011.
  • the straight top block 1 first moves up along the track to avoid jamming, and then moves to the left along the left inclined track 2012 to extrude the injection molded part 14 inward. After the front and rear molds are separated, the straight top block 1 Block 1 is then reset to the original position along the track to the right.
  • the upper end of the straight ejector rod 4 is fixed on the connecting slider 3 , and the lower end of the straight ejector rod 4 is fixed on the thimble plate 9 . .
  • the core 10 is provided with a guide hole 15, and a guide sleeve 5 is arranged in the guide hole 15.
  • the guide sleeve 5 is fixed on the upper and lower ends of the guide hole 15, and the guide sleeve 5 is sleeved outside the straight ejector rod 4 to guide the
  • the sleeve 5 plays a guiding role, and the guide sleeve 5 is made of copper material to avoid the inconvenience caused by the straight ejector rod 4 being stuck during the guiding process.
  • the straight top rods 4 are arranged in pairs, because the straight top block 1 is large, the straight top rods 4 arranged in pairs are used to make the straight top block 1 more balanced in force.
  • the connecting slider 3 includes a fixed block 301 and a slide rail 302 , the slide rail 302 is arranged between the fixed block 301 and the straight top block 1 , the slide rail 302 is fixedly connected with the fixed block 301 , and the fixed block 301 is fixed On the core 10, a sliding groove is provided at the bottom of the connecting block 101, and the sliding rail 302 is arranged in the sliding groove to realize the sliding connection between the connecting block 101 and the connecting block 3.
  • the sliding rail 302 and the fixing block 301 can be It is set as an integrated structure, that is, the connection slider 3 is an integrated structure, and the overall material of the connection slider 3 is copper; or the slide rail 302 and the fixing block 301 are set as a split structure, wherein the material of the slide rail 302 is copper, to avoid The straight top block 1 is stuck during the moving process, and the material of the fixed block 301 is iron, which reduces the cost.
  • the cross section of the slide rail 302 is set as a T-shaped structure
  • the slide groove is set as a T-shaped groove matched with the slide rail 302
  • the upper end of the fixing block 301 is provided with a positioning groove
  • the bottom of the slide rail 302 is set in the positioning groove
  • the fixing block 301 and the slide rail 302 are connected by bolts.
  • Embodiment 2 is basically the same as that of Embodiment 1, except that the guide rail 201 is arranged on the variable guide rail 201, and the guide block 2 includes the base 19, The guide rail 18 and several moving blocks 17 for changing the guide rail 201.
  • the moving block 17 includes a guide groove 1701 for forming the variable guide rail 201 and a push rod 1702.
  • the push rod 1702 is connected to a driving member that drives the moving block 17 to move.
  • the movement of the push rod 1702 is controlled according to the program, and the guide sliders 18 are arranged in pairs and are respectively arranged on both sides of the guide groove 1701.
  • the guide sliders 18 are soft materials, which can be bent and deformed according to the position change of the moving block 17, while Since the guide rails 18 are fixed on both sides of the guide groove 1701, the distance between the two guide rails 18 is kept constant.
  • the adjacent moving blocks 17 are attached to each other, and the width of the guide groove 1701 It is smaller than the diameter of the pulley 6, which improves the accuracy of the guide rail 201.
  • the moving block 17 is controlled to move according to the different injection molded parts 14, and different guide rails 201 are formed under the action of the moving block 17, so that the guide block 2.
  • a limit slider is arranged at the bottom of the moving block 17 , a plurality of limit slots 16 are arranged on the base 19 , and the limit slider is slidably arranged in the limit slot 16 .
  • the side wall connecting the guide groove 1701 and the guide rail 18 is set as an arc-shaped convex, and the convex The starting direction is toward the guide groove 1701, which is convenient for the deformation of the guide rail 18, and the guide rail 18 rotates to set the middle position of the arc-shaped protrusion.

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

Abstract

一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，包括下复板(7)，在下复板(7)上设置有型芯(10)，在下复板(7)和型芯(10)之间设置有顶针板(9)，还包括直顶挤压脱倒扣组件，所述直顶挤压脱倒扣组件设置在顶针板(9)和型芯(10)之间，所述直顶挤压脱倒扣结构包括用于顶出注塑件的直顶块(1)和用于驱动直顶块(1)的顶出驱动组件。该种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，便于生产夹线不外露的产品，使模具在开模块后通过挤压变形使产品脱离倒扣，实现倒扣产品的脱模，简化模具结构，降低模具成本。

Description

一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构 技术领域
本发明涉及注塑模具相关领域，尤其是涉及一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构。
背景技术
一些塑料件由于装配的需要通常会要求夹线不许外露，因此不可以按传统方法设计夹线外露，如汽车保险杠。因此其通常会设计外分型，通过斜顶脱倒扣机构，使产品脱离倒扣，从而完成产品顶出，取件，而该类注塑产品的结构存在的缺点是：夹线外露，影响外观，而客户不接受外露夹线影响销售。
例如，在中国专利文献上公开的“一种注塑模具及其直顶机构”，其公告号CN106079295B，直顶块内开设有与直顶块运动方向相垂直的沉孔，所沉孔内设置有轴向滑动的活塞，活塞的端部垂直延伸有一弹针，且活塞内开设有通槽，该通槽与沉孔的内壁形成一密封的封闭腔，于空腔内设置有齿轮，通槽的槽底处设置有与齿轮相啮合的齿条，其中直顶机构还包括穿设在直顶杆内的传动杆，传动杆固定于模具的底板上且传动杆的一段置于直顶块内并贯穿于齿轮，传动杆的一段设置为螺旋段，齿轮中部开设有与该螺旋段相啮合的通孔，直顶杆的脱模与抽回复位同步直顶块内弹针脱扣与顶出复位过程，但是该机构难以对生产夹线不外漏的产品，针对夹线不外漏的产品难以顶出。
发明内容
本发明是为了克服上述现有技术的夹线外露、影响外观、影响销售等问题，提供一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，便于生产夹线不外露的产品，使模具在开模块后通过挤压变形使产品脱离倒扣，实现倒扣产品的脱模，简化模具结构，降低模具成本。
为了实现上述目的，本发明采用以下技术方案：
一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，包括下复板，在下复板上设置有型芯，在下复板和型芯之间设置有顶针板，还包括直顶挤压脱倒扣组件，所述直顶挤压脱倒扣组件设置在顶针板和型芯之间，所述直顶挤压脱倒扣结构包括用于顶出注塑件的直顶块和用于驱动直顶块的顶出驱动组件。在该技术方案中，型芯用于形成注塑件，顶针板与直顶挤压脱倒扣组件配合将产品倒扣顶出，其中直顶块在顶出驱动组件作用下，直顶块与直顶杆在顶出时具备不同的行程距离，而针对能满足夹线不外漏的注塑件，其必然是具有内扣结构，通过传统的直接顶出一般难以实现，而本方案中通过直顶挤压脱倒扣结构使注塑件发生挤压变形，进而将注塑件顶出，操作方便快捷，且满足了夹线不外漏产品的需求。
作为优选，所述顶出驱动组件包括直顶杆、用于连接直顶杆和直顶块的连接滑块和用于控制直顶块运动方向的导向块，直顶块与直顶杆在顶出时具备不同的行程距离。
作为优选，直顶杆下端连接在顶针板上，上端连接在连接滑块上，直顶块包括用于与顶出驱动组件连接的连接块，所述直顶块的侧部滑动设置在导向块上，直顶块的底部滑动设置在连接滑块上；所述的导向块改变直顶块的顶出方向，所述的连接滑块使直顶块在横向上发生移动。
直顶杆用于与顶针板配合，便于在顶针板作用下顶起，连接滑块和导向块共同作用，即导向块改变直顶块的顶出方向，而连接滑块使直顶块在横向上发生移动，进而与导轨之间具备不同的行程距离，便于将注塑件挤压顶出，且结构简单，简化了模具结构，降低了模具成本。
作为优选，所述连接滑块包括滑轨，在连接块的底部设置有滑槽，滑轨与滑槽滑动设置。直顶块顶出的同时在导向块的作用下在横向发生移动，滑轨的设置对直顶块横向上的移动进行限位，提高直顶块顶出轨迹的精确度。
作为优选，连接滑块还包括固定块，固定块设置在滑轨的底部，固定块与滑轨设置为一体式结构；或者固定块与滑轨设置为分体式结构。固定块用于连接直顶杆，固定块与滑轨一体式设置，便于安装制造；而固定块与滑轨设置为分体式结构时，固定块采用铁材料，滑轨采用铜材料，避免了直顶块在滑轨上卡死，且分体式设置降低了成本。
作为优选，在型芯上设置有用于直顶杆穿设的导向孔，在导向孔内设置有用于避免直顶杆卡死的导向套，在所述导向套成对设置，成对的导向套分别设置在导向孔的上下两侧。导向孔的设置便于型芯对导向孔的顶出方向进行限位，导向套对直顶杆起到导向作用。
作为优选，在导向块上设置有用于控制直顶块顶出方向的导轨，在直顶块的侧部设置有滑轮，滑轮设置在导轨内，所述的滑轮带动直顶块沿导轨运动。滑轮的设置使直顶块在导向块的导轨内滑移更顺畅稳定，从而改变直顶块的顶出方向。
作为优选，所述导轨包括自下而上依次设置的直轨道、左斜轨道和右斜轨道，所述右斜轨道的长度大于左斜轨道的长度，右斜轨道的长度还大于直轨道的长度。在直顶块顶出过程中，直顶块首先沿轨道上移，避免卡死，再沿左斜轨道往左移动，向内侧挤压注塑件，待前后模分开后，直顶块再沿着轨道向右复位到原位置。
作为优选，所述导轨设置为可变导轨，所述导向块包括底座、导滑条和若干驱动导轨变形的移动块，在移动块上设置有用于形成导轨的导槽，导滑条成对设置且分别设置在导槽左右两侧。导轨设置为可变导轨，针对不同的形状结构的汽车保险杠或其他注塑件，其直顶挤 压的施力方向不同，通过改变导轨的倾斜方向即可改变直顶挤压的施力方向，通过移动移动块改变导轨的倾斜方向，因此可变导轨的设置便于适配不同的注塑件，通用性高。
因此，本发明具有如下有益效果：便于生产夹线不外露的产品，使模具在开模块后通过挤压变形使产品脱离倒扣，实现倒扣产品的脱模，简化模具结构，降低模具成本。
附图说明
图1是直顶挤压脱倒扣组件的结构示意图；
图2是注塑模具直顶挤压脱倒扣机构的局部结构示意图；
图3是注塑模具直顶挤压脱倒扣机构在开模时的剖视图；
图4是注塑模具直顶挤压脱倒扣机构在脱模时的剖视图；
图5是注塑模具直顶挤压脱倒扣机构在合模状态的剖视图；
图6是实施例1中导轨的结构示意图；
图7是实施例2中导轨的结构示意图；
图8是实施例2中导轨的剖视图；
图中：1、直顶块 101、连接块 2、导向块 201、导轨 2011、直轨道 2012、左斜轨道 2013、右斜轨道 3、连接滑块 301、固定块 302、滑轨 4、直顶杆 5、导向套 6、滑轮 7、下复板 8、模脚 9、顶针板 901、上顶针板 902、下顶针板 10、型芯 11、上复板 12、热流道板 13、型腔 14、注塑件 15、导向孔 16、限位槽 17、移动块 1701、导槽 1702、推杆 18、导滑条 19、底座。
具体实施方式
下面结合附图与具体实施方式对本发明做进一步的描述。
实施例1：
如图3、图4所示的实施例1中，一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，包括上复板11和下复板7，在上复板11的下方连接有热流道板12，热流道板12的下方设置有型腔13，在下复板7上连接有模脚8，在模脚8上连接有型芯10，在型腔13和下复板7之间设置有顶针板9，顶针板9包括靠近下复板7设置的下顶针板902和靠近型芯10设置的上顶针板901，在型芯10和下复板7之间设置有直顶脱倒扣组件，直顶脱倒扣组件包括直顶块1和驱动直顶块1顶出的顶出驱动组件，如图1所示，顶出驱动组件包括用于顶出的直顶杆4、用于连接直顶杆4和直顶块1的连接滑块3和用于控制直顶块1运动方向的导向块2，直顶块与直顶杆在顶出时具备不同的行程距离。其中直顶块1包括用于与顶出驱动组件连接的连接块101，连接块101底部与连接滑块3连接，导向块2固定在连接块101的侧 壁上，导向块2固定在型芯10上，如图6所示，在导向块2上设置有用于导向的导轨201，在连接块101的侧壁上设置有滑轮6，滑轮6设置在导轨201内实现连接块101与导向块2之间的滑动连接，连接块101通过滑轮6带动沿导向块2滑动。所述的导向块改变直顶块的顶出方向，所述的连接滑块使直顶块在横向上发生移动。
如图6所示，导轨201包括自下而上依次设置的直轨道2011、左斜轨道2012和右斜轨道2013，右斜轨道2013的长度大于左斜轨道2012的长度，右斜轨道2013的长度还大于直轨道2011的长度。在直顶块1顶出过程中，直顶块1首先沿轨道上移，避免卡死，再沿左斜轨道2012往左移动，向内侧挤压注塑件14，待前后模分开后，直顶块1再沿着轨道向右复位到原位置。
直顶杆4的上端固定在连接滑块3上，直顶杆4的下端固定在顶针板9上。。而在型芯10上设置有导向孔15，在导向孔15内设置有导向套5，导向套5固定在导向孔15的上下两端，且导向套5套设在直顶杆4外，导向套5起到导向作用，导向套5设置为铜材料，避免直顶杆4在导向过程中卡死造成不便。另外，直顶杆4成对设置，由于直顶块1较大，使用成对设置的直顶杆4使直顶块1受力更平衡。
如图2所示，其中连接滑块3包括固定块301和滑轨302，滑轨302设置在固定块301和直顶块1之间，滑轨302与固定块301固定连接，固定块301固定在型芯10上，在连接块101的底部设置有滑槽，滑轨302设置在滑槽内实现连接块101与连接滑块3之间的滑动连接，另外，滑轨302和固定块301可设置为一体式结构，即连接滑块3为一体式结构，连接滑块3整体的材料为铜；或者滑轨302和固定块301设置为分体式结构，其中滑轨302的材料为铜，避免直顶块1在移动过程中卡死，而固定块301材料为铁，降低成本。进一步地，滑轨302的截面设置为T型结构，滑槽设置为与滑轨302配合的T形槽，在固定块301的上端设置有定位槽，滑轨302的底部设置在定位槽内，固定块301与滑轨302之间通过螺栓连接。
如图3、图4、图5所示，在该技术方案中，在顶针板9顶起的同时，带动直顶杆4顶起，进而驱动直顶块1向上顶起，而直顶块1在导轨201和滑轨302的作用下，直顶块1首先沿轨道上移，避免卡死，再沿左斜轨道2012往左移动，向内侧挤压注塑件14，待前后模分开后，直顶块1再沿着轨道向右复位到原位置，即直顶块1与直顶块1向上开模时导轨201具备不同的行程距离，进而使直顶块1完成模具挤压变形，使产品脱离倒扣。另外该结构主要应用于保险杠，而该机构还可根据不同的产品更换导向块2，适配不同的产品。
实施例2：
如图7、图8所示，实施例2的技术方案与实施例1的技术方案基本相同，其不同之处在于：导轨201设置在可变导轨201，在所述导向块2包括底座19、导滑条18和若干用于改变导轨201的移动块17，移动块17包括用于形成可变导轨201的导槽1701和推杆1702，推杆1702连接驱动移动块17移动的驱动件，此处推杆1702的移动根据程序控制，导滑条18成对设置且分别设置在导槽1701两侧，另外导滑条18为软性材料，其可根据移动块17位置变化进行弯曲变形，而由于导滑条18固定在导槽1701的两侧，这就使两个导滑条18之间的距离保持固定，另外，相邻的移动块17之间相互贴合，且导槽1701的宽度小于滑轮6的直径，这就提高了导轨201的精确度，在使用时，根据注塑件14的不同，控制移动块17进行移动，并在移动块17作用下形成不同的导轨201，使导向块2适配不同的注塑件14，提高通用性。此外，移动块17底部设置有限位滑块，在底座19上设置有若干限位槽16，限位滑块滑动设置在限位槽16内。
另外，为避免导槽1701阻碍导滑条18变形导致到导滑条18形成的导轨201侧壁不平整，导槽1701与导滑条18连接的侧壁设置为圆弧形凸起，且凸起方向朝向导槽1701，而便于导滑条18变形，导滑条18转动设置圆弧形凸起的中间位置。
需要说明的是，上述描述中使用的词语“前”、“后”、“左”、“右”、“上”和“下”指的是附图中的方向，词语“内”和“外”分别指的是朝向或远离特定部件几何中心的方向。
以上实施例仅用于说明本发明而不用于限制本发明的范围。对本领域的技术人员来说，可根据以上描述的技术方案以及构思，做出其它各种相应的改变以及形变，而所有的这些改变以及形变都应该属于本发明权利要求的保护范围之内。

Claims (9)

  1. 一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，包括下复板(7)，在下复板(7)上设置有型芯(10)，在下复板(7)和型芯(10)之间设置有顶针板(9)，其特征是，还包括直顶挤压脱倒扣组件，所述直顶挤压脱倒扣组件设置在顶针板(9)和型芯(10)之间，所述直顶挤压脱倒扣结构包括用于顶出注塑件的直顶块(1)和用于驱动直顶块(1)的顶出驱动组件。
  2. 根据权利要求1所述的一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，其特征是，所述顶出驱动组件包括直顶杆(4)、用于连接直顶杆(4)和直顶块(1)的连接滑块(3)和用于控制直顶块(1)运动方向的导向块(2)，直顶块(1)与直顶杆(4)在顶出时具备不同的行程距离。
  3. 根据权利要求2所述的一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，其特征是，所述的直顶杆(4)下端连接在顶针板(9)上，上端连接在连接滑块(3)上，直顶块(1)包括用于与顶出驱动组件连接的连接块(101)，所述直顶块(1)的侧部滑动设置在导向块(2)上，直顶块(1)的底部滑动设置在连接滑块(3)上；所述的导向块(2)改变直顶块(1)的顶出方向，所述的连接滑块(3)使直顶块(1)在横向上发生移动。
  4. 根据权利要求2所述的一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，其特征是，所述连接滑块(3)包括滑轨(302)，在连接块(101)的底部设置有滑槽，滑轨(302)与滑槽滑动设置。
  5. 根据权利要求4所述的一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，其特征是，连接滑块(3)还包括固定块(301)，固定块(301)设置在滑轨(302)的底部，固定块(301)与滑轨(302)设置为一体式结构；或者固定块(301)与滑轨(302)设置为分体式结构。
  6. 根据权利要求2所述的一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，其特征是，在型芯(10)上设置有用于直顶杆(4)穿设的导向孔(15)，在导向孔(15)内设置有用于避免直顶杆(4)卡死的导向套(5)，在所述导向套(5)成对设置，成对的导向套(5)分别设置在导向孔(15)的上下两侧。
  7. 根据权利要求2-6任意一项所述的一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，其特征是，在导向块(2)上设置有用于控制直顶块(1)顶出方向的导轨(201)，在直顶块(1)的侧部设置有滑轮(6)，滑轮(6)设置在导轨(201)内，所述的滑轮带动直顶块沿导轨运动。
  8. 根据权利要求7所述的一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，其特征是，所述导轨(201)包括自下而上依次设置的直轨道(2011)、左斜轨道(2012)和右斜轨道(2013)， 所述右斜轨道(2013)的长度大于左斜轨道(2012)的长度，右斜轨道(2013)的长度还大于直轨道(2011)的长度。
  9. 根据权利要求7所述的一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构，其特征是，所述导轨(201)设置为可变导轨(201)，所述导向块(2)包括底座(19)、导滑条(18)和若干驱动导轨(201)变形的移动块(17)，在移动块(17)上设置有用于形成导轨(201)的导槽(1701)，导滑条(18)成对设置且分别设置在导槽(1701)左右两侧。
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CN113211742A (zh) * 2021-04-29 2021-08-06 浙江凯华模具有限公司 一种汽车保险杠注塑模具直顶挤压塑件变形脱倒扣机构

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CN115723306A (zh) * 2023-01-06 2023-03-03 赫比(苏州)通讯科技有限公司 一种注塑镶件顶出装置
CN116100768A (zh) * 2023-01-09 2023-05-12 余姚市德沃斯模具科技有限公司 一种汽车后窗框塑料产品的模具结构
CN118238365A (zh) * 2024-05-28 2024-06-25 宁海县第一注塑模具有限公司 一种多倒扣塑件的注塑模具

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