WO2023159742A1 - 一种油缸滑块内斜抽芯结构 - Google Patents

一种油缸滑块内斜抽芯结构 Download PDF

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Publication number
WO2023159742A1
WO2023159742A1 PCT/CN2022/088990 CN2022088990W WO2023159742A1 WO 2023159742 A1 WO2023159742 A1 WO 2023159742A1 CN 2022088990 W CN2022088990 W CN 2022088990W WO 2023159742 A1 WO2023159742 A1 WO 2023159742A1
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Prior art keywords
slider
core
pulling
mold
level
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PCT/CN2022/088990
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English (en)
French (fr)
Inventor
梁正华
梁凯
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 WO2023159742A1 publication Critical patent/WO2023159742A1/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
    • B29C45/26—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 a mold working mechanism, more specifically, it relates to an inner oblique core-pulling structure of an oil cylinder slider.
  • the utility model patent with the publication number CN205416251U discloses an injection mold with an oblique core-pulling structure, which includes a lower mold base and a lower mold core arranged on the lower mold base, and also includes an oblique core-pulling structure.
  • the oblique core-pulling structure includes Cylinder, horizontal slider, inclined slider and mold core, the mold core is arranged on the lower mold core, the inclined slider is arranged in the straight groove and is slidably matched with the straight groove, and the inclined slider is fixedly connected to the On the horizontal slider, the piston rod of the cylinder is fixedly connected with the horizontal slider.
  • the utility model is an injection mold with an oblique core-pulling structure. An oblique slider is arranged on the mold core, and an air cylinder and a horizontal slider are set to drive the oblique slider to move horizontally. When the oblique slider moves horizontally, the mold core can be pushed.
  • the injection mold sets the cylinder outside the mold, so that the layout structure of the mold is more reasonable, the internal structure of the mold can be reduced, and the weight of the mold can be reduced. height, the layout is more convenient.
  • the oblique slider is fixedly connected to the horizontal slider, and the oblique slider can only move horizontally with the horizontal slider, and cannot simultaneously generate multiple slots and hole structures with different orientations on the injection molded product.
  • the existing oblique core-pulling structure of the mold is difficult to simultaneously generate multiple grooves and hole structures with different orientations on the injection molded product, which will greatly increase the difficulty of mold manufacturing and development costs.
  • the present invention provides a structure It is more compact, more convenient to demould, and it is easier to simultaneously generate multiple internally inclined core-pulling structures of cylinder sliders with different slot and hole structures.
  • the technical scheme of the present invention is: an internal inclined core-pulling structure of an oil cylinder slider, which is set in a mold, and the mold includes a movable mold and a fixed mold. block and core-pulling slider, the first-level slider is slidably connected to the moving mold, the second-level slider is slidably connected to the first-level slider, the core-pulling slider is slidably connected to the moving mold and connected with the second-level slider, and the first-level slider is slidably connected to the first-level slider.
  • the sliding path of the first-level slider forms an included angle with the path of the second-level slider.
  • the first-level slider and the core-pulling slider can invade the cavity of the mold and occupy part of the cavity space respectively.
  • the cavity space occupied by the first-level slider and the core-pulling slider forms a groove and hole structure.
  • the second-level slider and the core-pulling slider are arranged on the first-level slider, so the movement path of the second-level slider and the core-pulling slider will not intersect with the movement path of the first-level slider, so that the first-level slider, the core-pulling slider
  • the core sliders will not interfere with each other when the product is released after molding, which is conducive to the compact layout of the core-pulling structure of the mold. Since the sliding path of the first-level slider and the path of the second-level slider form an included angle, it is convenient to simultaneously generate multiple slots and hole structures with different orientations, and to easily complete multiple trips during the molding cycle to ensure smooth demoulding of the product .
  • the first-level slider is provided with a second-level slider chute
  • the second-level slider is slidably connected in the second-level slider chute
  • the opening between the second-level slider and the fixed mold is provided with a follower mold and a fixed mold.
  • Combined two-stage slider drive structure The secondary slider slides in the chute of the secondary slider to realize the sliding connection between the secondary slider and the primary slider.
  • the two-stage slider drive structure converts the position change caused by the opening and closing of the movable mold and the fixed mold into the power to drive the movement of the secondary slider, which is more conducive to simplifying the mold structure and saving energy.
  • the movable mold is provided with a slope surface
  • the first-level slider is slidably connected to the slope surface
  • the first-level slider is provided with a second-level slider support surface
  • the slope surface forms an angle with the second-level slider support surface.
  • the chute of the first-level slider is arranged on the supporting surface of the second-level slider.
  • the slope surface forms an included angle with the support surface of the secondary slider, so that the sliding path of the primary slider forms an included angle with the path of the secondary slider.
  • the secondary slider drive structure includes an inclined guide post and a guide post groove
  • the inclined guide post is fixed on the top of the secondary slider
  • the guide post groove is set on the fixed mold
  • the top of the inclined guide post and the guide post groove notch corresponding to the position.
  • a core-pulling chute leading to the mold cavity is provided on the primary slider, the core-pulling slider is adapted to the core-pulling chute and slidably connected in the core-pulling chute, and the end of the secondary slider is fixed with T-shaped block, the end of the core-pulling slider is provided with a T-shaped slot adapted to the T-shaped block, and the T-shaped block is slidably embedded in the T-shaped slot.
  • the core-pulling slider moves in a limited manner in the core-pulling chute, and when the secondary slider moves with the opening and closing of the movable mold and the fixed mold, it drives the core-pulling slider to move by driving the T-shaped block.
  • the movement of the secondary slider is oblique movement, and the relative position between the secondary slider and the core-pulling slider will change.
  • the secondary The level slider and the core-pulling slider can be adaptively adjusted by sliding to keep connected.
  • the slide groove of the secondary slider includes a groove body and a groove wall insert, the groove wall insert is detachably connected to the groove body, and the groove wall insert is bonded to the side of the secondary slider.
  • the groove wall insert When the secondary slider slides in the chute of the secondary slider, it will rub against the groove wall.
  • Set the groove wall insert as a wearing part and directly contact the secondary slider to protect the groove body and avoid the wear of the groove body. Inserts are replaced when worn to a certain extent.
  • the groove wall insert is made of copper. Copper parts have strong wear resistance, which can improve the service life of the groove wall inserts.
  • a shovel base is provided on the movable mold, and a shovel base socket is provided on the primary slider, and the shovel base and the shovel base socket are fit and fitted.
  • the shovel base is embedded in the shovel base socket, and the first-level slider is locked.
  • an oil cylinder is arranged on the movable mold, and the piston rod of the oil cylinder is connected with the first-stage slide block.
  • the oil cylinder has a large output force and a smooth movement, providing power for the movement of the first-stage slider.
  • the sliding path of the first-level slider and the path of the second-level slider form an included angle, which can conveniently generate multiple slots and hole structures with different orientations at the same time, and conveniently complete multiple trips within the molding cycle to ensure the smoothness of the product. demoulding.
  • the molding cycle is short.
  • the driving force of the secondary slider is derived from the opening and closing process of the movable mold and the fixed mold, so that the movement time of the secondary slider coincides with the opening and closing time of the mold, and there is no need to specially set up a driving device for the secondary slider , and arrange time for it to work separately, thereby shortening the molding cycle.
  • Fig. 1 is a structural representation of the present invention
  • Fig. 2 is a structural schematic diagram of another perspective of the present invention.
  • Fig. 3 is the side structure schematic diagram of the present invention.
  • Fig. 4 is the structural representation of applying the mold of the present invention.
  • Fig. 5 is the structural representation of the product produced with the present invention.
  • Fig. 6 is a schematic diagram of the connection structure between the secondary slider and the core-pulling slider in the present invention.
  • Fig. 7 is a schematic diagram of the working state of the secondary slider in the present invention.
  • an oil cylinder slider inwardly inclined core-pulling structure is set in a mould.
  • the mould includes a movable mold 1 and a fixed mold 2.
  • Die 2 is provided with a thimble cylinder, and the piston rod end of the thimble cylinder is connected with a thimble pointing to the cavity.
  • the movable mold 1 includes a middle mold and an outer mold, so that the mold becomes a three-section mold, and the mold opening state is maintained between the middle mold and the outer mold under normal conditions. This mold is used for injection molding automobile rear bumper.
  • the inner oblique core-pulling structure of the oil cylinder slider includes a primary slider 3, a secondary slider 4 and a core-pulling slider 15.
  • the blocks 4 are two and arranged symmetrically in a figure-eight shape.
  • the secondary slider 4 is slidably connected to the primary slider 3.
  • the core-pulling slider 15 is slidably connected to the movable mold 1 and connected to the secondary slider 4.
  • the primary The sliding path of the slider 3 and the path of the secondary slider 4 form an included angle.
  • the first-level slider 3 is provided with a second-level slider chute 5, the second-level slider 4 is slidably connected in the second-level slider chute 5, and the second-level slider 4 and the fixed mold 2 are provided with a follower mold 1 and The two-stage slider driving structure of the opening and closing linkage of the fixed mold 2.
  • the middle mold of the moving mold 1 is provided with a slope surface 13, the first-level slider 3 is slidably connected to the slope surface 13, the first-level slider 3 is provided with a second-level slider support surface 14, and the slope surface 13 and the second-level slider
  • the support surface 14 forms an included angle
  • the secondary slider chute 5 is arranged on the secondary slider support surface 14 .
  • the secondary slide block drive structure includes an inclined guide post 6 and a guide post groove, the inclined guide post 6 is fixed on the top of the secondary slide block 4, the guide post groove is set on the fixed mold 2, the top of the inclined guide post 6 and the guide post groove corresponding to the notch position.
  • the first-level slider 3 is provided with a core-pulling chute 10 leading to the mold cavity.
  • the core-pulling slider 15 is adapted to the core-pulling chute 10 and is slidably connected in the core-pulling chute 10.
  • the 4 ends of the second-level slider A T-shaped block 7 is fixed on the top, and the end of the core-pulling slider 15 is provided with a T-shaped slot 8 adapted to the T-shaped block 7, and the T-shaped block 7 is slidably embedded in the T-shaped slot 8.
  • the secondary slider chute 5 includes a groove body and a groove wall insert 11 , the groove wall insert 11 is detachably connected to the groove body, and the groove wall insert 11 is attached to the side of the secondary slider 4 .
  • the groove wall insert 11 is a copper product.
  • the outer mold of the movable mold 1 is provided with a shovel base 12, and the first-level slide block 3 is provided with a shovel base socket, and the shovel base 12 is fit and fitted with the shovel base socket.
  • the middle mold of the movable mold 1 is provided with an oil cylinder 9, and the piston rod of the oil cylinder 9 is connected with the primary slider 3 through a connecting rod.
  • Step 1 Extend the piston rod of the oil cylinder 9, push the first-level slider 3, the second-level slider 4 and the core-pulling slider 15 to move to the cavity, and the end protrusion of the first-level slider 3 protrudes into the cavity
  • the movable mold 1 and the fixed mold 2 are closed, the middle mold is first closed with the fixed mold 2, and the outer mold is closed with the middle mold again, and the shovel base 12 moves to the outside of the first-level slider 3 along the axial direction with the outer mold, and embeds the shovel Lock the first-level slider 3 in the base nest; during the mold closing process, the insertion and cooperation between the inclined guide post 6 and the guide post groove gradually deepens, and the contact pressure between the inclined guide post 6 and the guide post groove produces a lateral component force, pushing the second
  • the first-level slider 4 moves along the second-level slider chute 5, and gradually approaches the cavity.
  • the core-pulling chute 10 protrudes obliquely into the cavity, forming a space angle with the end protrusion of
  • Step 2 The molten material is injected into the mold cavity through the sprue of the fixed mold, and the product 16 is formed. The position occupied by the end protrusion of the first-level slider 3 and the core-pulling slider 15 in the cavity is finally formed on the product 16 with different orientations. Slot and hole structure;
  • Step 3 The movable mold 1 and the fixed mold 2 are opened. During the mold opening process, the contact pressure between the inclined guide post 6 and the guide post groove generates a lateral component force, pushing the secondary slider 4 to move along the secondary slider chute 5 , gradually away from the cavity, during this process, the secondary slider 4 pulls the core-pulling slider 15 to exit the cavity along the core-pulling chute 10, and gradually releases from the product 16.
  • the shovel base 12 follows the outer mold along the axial direction Move, leave the first-level slider 3, unlock the first-level slider 3, after the core-pulling slider 15 completely exits the cavity, trigger the sensor, under PLC control, the piston rod of the oil cylinder 9 retracts, and pulls the first-level slider 3 moves along the slope 13 with the secondary slider 4 and the core-pulling slider 15, away from the cavity, and the end protrusion of the primary slider 3 is also released from the product 16;
  • Step 4 The thimble cylinder is activated, and the thimble moves to push the product 16 out of the cavity.
  • the tip of the inclined guide post 6 is provided with a tapered tip, which facilitates the alignment of the guide post groove.
  • the secondary slide block 4 is a hollow structure, and the inside of the secondary slide block 4 is provided with a guide post support 17.
  • the guide post support 17 and the secondary slide block 4 are fixed by screws, and the inclined guide post 6 is rotatably connected to the guide post support 17.
  • the guide post 6 maintains its axial positioning on the guide post support 17 through its own stepped structure and the retaining ring for the shaft.
  • Secondary slide block 4 bottoms have groove 19, and the bottom of the groove of secondary slide block chute 5 is provided with shifting tooth stopper 20 and inner groove bar stopper 23, shifting tooth stopper 20, inner groove bar stopper 23 can Entering through the groove 19, the shift tooth block 20 can touch the push tooth 18 before the secondary slide block 4 slides outward to the limit position.
  • the inside of the secondary slider 4 is also provided with an elastic stop pin 21 , the elastic stop pin 21 is slidably connected to an inner groove bar 22 and connected to a spring, and the end of the spring is fixed on the inner groove bar 22 .
  • the end of the inner groove bar 22 is hinged on the inner wall of the secondary slider 4, and an expansion spring is arranged between the inner groove bar 22 and the inner wall of the second-level slider 4, and an inner groove is provided at the end of the inner groove bar stopper 23 facing the second-level slider 4
  • the bar guide inclined surface during the outward sliding process of the secondary slider 4, the inner groove bar 22 can be pressed against the inner groove bar guide inclined surface.
  • the elastic stop pin 21 can touch the tooth surface of the shifting tooth 18, and the front end of the elastic stop pin 21 is provided with a stop pin guide slope, so that when the inclined guide post 6 rotates in one direction, the stop pin guide slope can be pushed to push the elastic stop pin 21 to overcome the spring and retract.
  • Step 3 During the mold opening process, the secondary slide block 4 gradually slides outwards, the inner groove bar 22 is gradually engaged with the guide slope of the inner groove bar and pressed, and the inner groove bar 22 overcomes the elastic force of the expansion spring and is gradually drawn together. At the same time, the secondary slider 4 is gradually approaching the shifting tooth block 20, and the shifting tooth block 20 is gradually approaching the first shifting tooth 18. When the secondary sliding block 4 slides outward and approaches the limit position, the shifting tooth block 20 touches the pressing tooth 18.
  • Elastic pin 21 acts as an anti-reverse function, and inner groove bar 22 is parallel to shifting tooth stopper 20; when the next working cycle begins, as shifting tooth 18 moves away from shifting tooth stopper 20, inner groove bar 22 moves away from inner groove bar stopper 23 , the inner groove bar 22 expands outward under the elastic force of the expansion spring, and the elastic stop pin 21 also promotes the shifting tooth 18 to continue to rotate a little, so that the shifting tooth stopper 20 and the shifting tooth 18 are engaged when the mold is closed next time.
  • the inclined guide post 6 can be rotated to change the surface, so that the surrounding surface of the inclined guide post 6 can be worn evenly with the groove wall of the guide post during the working process, and the opening and closing of the mold can be avoided.
  • the oblique guide post 6 is mainly subjected to excessive wear on the inner and outer sides, thereby improving the service life of the components.

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

Abstract

一种油缸滑块内斜抽芯结构，设于一模具内，模具包括动模（1）和定模（2），油缸滑块内斜抽芯结构包括一级滑块（3）、二级滑块（4）和抽芯滑块（15），一级滑块（3）滑动连接在动模（1）上，二级滑块（4）滑动连接在一级滑块（3）上，抽芯滑块（15）滑动连接在动模（1）上并与二级滑块（4）连接，一级滑块（3）的滑动路径与二级滑块（4）的路径构成夹角，可方便地同时生成多个朝向不同的槽、孔结构并在成型周期内方便地完成多重脱扣，确保产品顺利脱模。

Description

一种油缸滑块内斜抽芯结构 技术领域
本发明涉及一种模具工作机构，更具体地说，它涉及一种油缸滑块内斜抽芯结构。
背景技术
随着市场竞争的日益加剧，很多产品在造型、结构方面下大功夫加以改进，例如在注塑产品上设置多个朝向不同的槽、孔结构以增加产品独特性，但此类产品在生产过程中会带来一些难题，例如槽、孔结构的朝向与开合模方向成夹角时，必须设置抽芯结构，而多个朝向不同的槽、孔结构的抽芯方向不一致，因此需要设置多个运动方向的抽芯结构，在模具内部有限的空间内设置多个运动方向的抽芯结构会大大增加模具制造难度，增加模具开发成本。为此，很多注塑产品生产厂家接到此类具有多个朝向不同的槽、孔结构的产品订单时，往往难以生产，只能跟客户协商更改产品设计，影响了市场声誉。公开号为CN205416251U的实用新型专利公开了一种带斜抽芯结构的注塑模具，包括下模座和设置在下模座上的下模仁，还包括斜抽芯结构，所述斜抽芯结构包括气缸、水平滑块、斜滑块和模芯，所述模芯设置在下模仁上，所述斜滑块设置在直凹槽中并与直凹槽滑动配合，所述斜滑块固定连接在水平滑块上，所述气缸的活塞杆与水平滑块固定连接。该实用新型带斜抽芯结构的注塑模具，其通过在模芯上设置斜滑块，并设置气缸和水平滑块驱动斜滑块作水平移动，斜滑块做水平移动时即可推动模芯沿筋伸出方向移动，从而实现在脱模时的斜抽芯运动，该注塑模具将气缸设置在模具外侧，从而使模具的布置结构更合理，可减化模具的内部结构，减小模具的高度，布置更方便。但是该实用新型中斜滑块固定连接在水平滑块上，斜滑块只能随水平滑块水平移动，并不能在注塑产品上同时生成多个朝向不同的槽、孔结构。
发明内容
现有的模具斜抽芯结构在注塑产品上同时生成多个朝向不同的槽、孔结构难度较大，会大大增加模具制造难度和开发成本，为克服这一缺陷，本发明提供了一种结构更紧凑，脱模更方便，更易于同时生成多个朝向不同的槽、孔结构的油缸滑块内斜抽芯结构。
本发明的技术方案是：一种油缸滑块内斜抽芯结构，设于一模具内，模具包括动模和定模，本油缸滑块内斜抽芯结构包括一级滑块、二级滑块和抽芯滑块，一级滑块滑动连接在动模上，二级滑块滑动连接在一级滑块上，抽芯滑块滑动连接在动模上并与二级滑块连接，一级滑块的滑动路径与二级滑块的路径构成夹角。一级滑块和抽芯滑块可侵入模具的型腔中，分别占据部分型腔空间，在注塑成型过程中，级滑块和抽芯滑块所占据的型腔空间形成槽、孔结构。二级滑块和抽芯滑块设于一级滑块上，因此二级滑块和抽芯滑块的运动路径不会与 一级滑块的运动路径形成交叉，使得一级滑块、抽芯滑块在产品成型后脱扣时不会相互干涉，有利于模具抽芯结构的紧凑布局。由于一级滑块的滑动路径与二级滑块的路径构成夹角，可方便地同时生成多个朝向不同的槽、孔结构并在成型周期内方便地完成多重脱扣，确保产品顺利脱模。
作为优选，一级滑块上设有二级滑块滑槽，二级滑块滑动连接在二级滑块滑槽内，二级滑块与定模间设有随动模和定模的开合联动的二级滑块驱动结构。二级滑块在二级滑块滑槽内滑动，实现二级滑块与一级滑块的滑动连接。二级滑块驱动结构将动模和定模的开合产生的位置变化转化为驱动二级滑块运动的动力，更利于简化模具结构及节能。
作为优选，动模上设有坡面，一级滑块滑动连接在坡面上，一级滑块上设有二级滑块支持面，坡面与二级滑块支持面构成夹角，二级滑块滑槽设于二级滑块支持面上。坡面与二级滑块支持面构成夹角，使得一级滑块的滑动路径与二级滑块的路径构成夹角。
作为优选，所述二级滑块驱动结构包括斜导柱和导柱槽，斜导柱固定在二级滑块顶部，导柱槽设于定模上，斜导柱顶端与导柱槽槽口位置对应。动模和定模开合时，斜导柱与导柱槽形成配合，动模和定模间的轴向相对运动使得斜导柱与导柱槽接触面生成侧向分力，成为二级滑块滑动的驱动力。
作为优选，一级滑块上设有通向模具型腔的抽芯滑槽，抽芯滑块与抽芯滑槽适配并滑动连接在抽芯滑槽内，二级滑块端部固定有T形块，抽芯滑块端部设有与T形块适配的T形槽，T形块滑动嵌置于T形槽内。抽芯滑块在抽芯滑槽内受限定地运动，二级滑块随动模和定模开合而运动时，通过带动T形块带动抽芯滑块运动。由于动模和定模开合时，二级滑块的运动是斜向运动，二级滑块与抽芯滑块间会发生相对位置变动，通过T形块与T形槽的滑动配合，二级滑块与抽芯滑块可通过滑动进行自适应调整而保持连接。
作为优选，二级滑块滑槽包括槽体和槽壁镶块，槽壁镶块可拆卸地连接在槽体上，槽壁镶块与二级滑块侧面贴合。二级滑块在二级滑块滑槽内滑动时会与槽壁摩擦，设置槽壁镶块作为易损件与二级滑块直接接触磨耗，以保护槽体，避免槽体磨损，槽壁镶块磨损到一定程度时更换。
作为优选，槽壁镶块为铜制件。铜制件具有较强的耐磨性，可提高槽壁镶块的使用寿命。
作为优选，动模上设有铲基，一级滑块上设有铲基嵌口，铲基与铲基嵌口适配嵌合。动模、定模合模时，铲基嵌入铲基嵌口，锁定一级滑块。
作为优选，动模上设有油缸，油缸的活塞杆与一级滑块连接。油缸输出力大，动作平 稳，为一级滑块的运动提供动力。
本发明的有益效果是：
降低复杂产品的生产难度。本发明中一级滑块的滑动路径与二级滑块的路径构成夹角，可方便地同时生成多个朝向不同的槽、孔结构并在成型周期内方便地完成多重脱扣，确保产品顺利脱模。
成型周期短。本发明中二级滑块的驱动力由动模和定模的开合模过程衍生而出，使得二级滑块的运动时间与开合模时间重合，无需专门设置二级滑块的驱动装置，并单独安排时间供其工作，从而缩短成型周期。
附图说明
图1为本发明的结构示意图；
图2为本发明另一视角的结构示意图；
图3为本发明的侧面结构示意图；
图4为应用本发明的模具的结构示意图；
图5为用本发明生产的产品的结构示意图；
图6为本发明中二级滑块与抽芯滑块的连接结构示意图；
图7为本发明中二级滑块的工作状态示意图。
图中，1-动模，2-定模，3-一级滑块，4-二级滑块，5-二级滑块滑槽，6-斜导柱，7-T形块，8-T形槽，9-油缸，10-抽芯滑槽，11-槽壁镶块，12-铲基，13-坡面，14-二级滑块支持面，15-抽芯滑块，16-产品，17-导柱支架，18-拨齿，19-过槽，20-拨齿挡块，21-弹性挡销，22-内槽条，23-内槽条挡块。
具体实施方式
下面结合附图具体实施例对本发明作进一步说明。
实施例1：
如图1至图5所示，一种油缸滑块内斜抽芯结构，设于一模具内，模具包括动模1和定模2，动模1和定模2围合成一型腔，定模2上设有一顶针气缸，顶针气缸的活塞杆端部连有一指向型腔的顶针。动模1包括中间模和外模，使本模具成为三段模，常态下中间模和外模间保持开模状态。本模具用于注塑汽车后保险杠。本油缸滑块内斜抽芯结构包括一级滑块3、二级滑块4和抽芯滑块15，一级滑块3为一个并滑动连接在动模1的中间模上，二级滑块4为两个且呈八字形对称布置，二级滑块4滑动连接在一级滑块3上，抽芯滑块15滑动连接在动模1上并与二级滑块4连接，一级滑块3的滑动路径与二级滑块4的路径构成夹角。一级滑 块3上设有二级滑块滑槽5，二级滑块4滑动连接在二级滑块滑槽5内，二级滑块4与定模2间设有随动模1和定模2的开合联动的二级滑块驱动结构。动模1的中间模上设有坡面13，一级滑块3滑动连接在坡面13上，一级滑块3上设有二级滑块支持面14，坡面13与二级滑块支持面14构成夹角，二级滑块滑槽5设于二级滑块支持面14上。所述二级滑块驱动结构包括斜导柱6和导柱槽，斜导柱6固定在二级滑块4顶部，导柱槽设于定模2上，斜导柱6顶端与导柱槽槽口位置对应。一级滑块3上设有通向模具型腔的抽芯滑槽10，抽芯滑块15与抽芯滑槽10适配并滑动连接在抽芯滑槽10内，二级滑块4端部固定有T形块7，抽芯滑块15端部设有与T形块7适配的T形槽8，T形块7滑动嵌置于T形槽8内。二级滑块滑槽5包括槽体和槽壁镶块11，槽壁镶块11可拆卸地连接在槽体上，槽壁镶块11与二级滑块4侧面贴合。槽壁镶块11为铜制件。动模1的外模上设有铲基12，一级滑块3上设有铲基嵌口，铲基12与铲基嵌口适配嵌合。动模1的中间模上设有油缸9，油缸9的活塞杆通过连杆与一级滑块3连接。
本油缸滑块内斜抽芯结构的工作过程如下：
步骤一.油缸9活塞杆伸出，推动一级滑块3携二级滑块4和抽芯滑块15移动到型腔处，一级滑块3的端部凸起部突出于型腔内；动模1和定模2合模，中间模先与定模2合拢，外模再与中间模合拢，铲基12随外模沿轴向移动到一级滑块3外侧，嵌入所述铲基嵌口内，锁住一级滑块3；合模过程中斜导柱6与导柱槽插接配合逐渐深入，斜导柱6与导柱槽间的接触压力产生侧向分力，推动二级滑块4沿二级滑块滑槽5运动，逐渐靠近型腔，在此过程中二级滑块4推动抽芯滑块15相对于模具做切向运动和轴向运动的合成运动，沿抽芯滑槽10斜向突入型腔内，与一级滑块3的端部凸起部形成空间夹角；
步骤二.融料经由定模的浇道注入型腔，产品16成型，型腔中被一级滑块3的端部凸起部及抽芯滑块15占据处最终形成产品16上不同朝向的槽、孔结构；
步骤三.动模1和定模2开模，开模过程中斜导柱6与导柱槽间的接触压力产生侧向分力，推动二级滑块4沿二级滑块滑槽5运动，逐渐远离型腔，在此过程中二级滑块4拉动抽芯滑块15沿抽芯滑槽10退出型腔，逐渐与产品16脱扣，与此同时铲基12随外模沿轴向移动，离开一级滑块3，解除对一级滑块3的锁定，抽芯滑块15完全退出型腔后，触发传感器，在PLC控制下，油缸9活塞杆回缩，拉动一级滑块3携二级滑块4和抽芯滑块15沿坡面13移动，远离型腔，一级滑块3的端部凸起部也与产品16脱扣；
步骤四.顶针气缸启动，顶针运动，将产品16推出型腔。
实施例2：
如图6、图7所示，斜导柱6顶端设有锥尖，便于找准所述导柱槽。二级滑块4为空心结构，二级滑块4内部设有导柱支架17，导柱支架17与二级滑块4通过螺钉固定，斜导柱6转动连接在导柱支架17上，斜导柱6通过自身的台阶结构和轴用挡圈保持在导柱支架17上的轴向定位。斜导柱6底端周面上均布有四个拨齿18，相邻拨齿18相对斜导柱6轴线成90°夹角。二级滑块4底部开有过槽19，二级滑块滑槽5的槽底设有拨齿挡块20和内槽条挡块23，拨齿挡块20、内槽条挡块23可进入过槽19，拨齿挡块20可在二级滑块4向外滑动到极限位置前触压拨齿18。二级滑块4内部还设有弹性挡销21，弹性挡销21滑动连接在一内槽条22上并与一弹簧连接，弹簧末端固定在内槽条22上。内槽条22末端铰接在二级滑块4内壁上，内槽条22与二级滑块4内壁间设有扩张弹簧，内槽条挡块23朝向二级滑块4的一端设有内槽条导向斜面，二级滑块4向外滑动过程中，内槽条22可与内槽条导向斜面触压。弹性挡销21可触及拨齿18齿面，弹性挡销21前端设有挡销导向斜面，使得斜导柱6朝一方向转动时可推压挡销导向斜面进而推动弹性挡销21克服弹簧退缩。
步骤三中.开模过程中，二级滑块4逐渐向外滑动，内槽条22与内槽条导向斜面逐渐接合触压，并使内槽条22克服所述扩张弹簧弹力逐步收拢，与此同时，二级滑块4逐步靠近拨齿挡块20，拨齿挡块20逐步接近一拨齿18，当二级滑块4外滑接近极限位置时，拨齿挡块20触压拨齿18，随着二级滑块4继续外滑，拨齿挡块20与拨齿18压力逐渐增大，该压力通过拨齿18带动斜导柱6转动，相邻的一个拨齿18通过挡销导向斜面推动弹性挡销21退缩；当二级滑块4外滑到达极限位置时，拨齿挡块20停止，而顶压弹性挡销21的拨齿18越过弹性挡销21最前端，此时弹性挡销21起止逆作用，内槽条22与拨齿挡块20平行；下一工作周期开始时，随着拨齿18远离拨齿挡块20，内槽条22远离内槽条挡块23，内槽条22在所述扩张弹簧弹力作用下外扩，弹性挡销21也推动拨齿18继续转动少许，便于下次合模时拨齿挡块20与拨齿18接合。
其余步骤同实施例1。
本技术方案中，每次二级滑块4外滑，斜导柱6可转动换面，使工作过程中斜导柱6周面尽量与所述导柱槽槽壁均匀磨耗，避免开合模过程中斜导柱6主要内、外两侧受力而过度磨损，从而提高部件使用寿命。

Claims (9)

  1. 一种油缸滑块内斜抽芯结构，设于一模具内，模具包括动模(1)和定模(2)，其特征是包括一级滑块(3)、二级滑块(4)和抽芯滑块(15)，一级滑块(3)滑动连接在动模(1)上，二级滑块(4)滑动连接在一级滑块(3)上，抽芯滑块(15)滑动连接在动模(1)上并与二级滑块(4)连接，一级滑块(3)的滑动路径与二级滑块(4)的路径构成夹角。
  2. 根据权利要求1所述的油缸滑块内斜抽芯结构，其特征是一级滑块(3)上设有二级滑块滑槽(5)，二级滑块(4)滑动连接在二级滑块滑槽(5)内，二级滑块(4)与定模(2)间设有随动模(1)和定模(2)的开合联动的二级滑块驱动结构。
  3. 根据权利要求2所述的油缸滑块内斜抽芯结构，其特征是动模(1)上设有坡面(13)，一级滑块(3)滑动连接在坡面(13)上，一级滑块(3)上设有二级滑块支持面(14)，坡面(13)与二级滑块支持面(14)构成夹角，二级滑块滑槽(5)设于二级滑块支持面(14)上。
  4. 根据权利要求2所述的油缸滑块内斜抽芯结构，其特征是所述二级滑块驱动结构包括斜导柱(6)和导柱槽，斜导柱(6)固定在二级滑块(4)顶部，导柱槽设于定模(2)上，斜导柱(6)顶端与导柱槽槽口位置对应。
  5. 根据权利要求1所述的油缸滑块内斜抽芯结构，其特征是一级滑块(3)上设有通向模具型腔的抽芯滑槽(10)，抽芯滑块(15)与抽芯滑槽(10)适配并滑动连接在抽芯滑槽(10)内，二级滑块(4)端部固定有T形块(7)，抽芯滑块(15)端部设有与T形块(7)适配的T形槽(8)，T形块(7)滑动嵌置于T形槽(8)内。
  6. 根据权利要求2所述的油缸滑块内斜抽芯结构，其特征是二级滑块滑槽(5)包括槽体和槽壁镶块(11)，槽壁镶块(11)可拆卸地连接在槽体上，槽壁镶块(11)与二级滑块(4)侧面贴合。
  7. 根据权利要求7所述的油缸滑块内斜抽芯结构，其特征是槽壁镶块(11)为铜制件。
  8. 根据权利要求1至7中任一项所述的油缸滑块内斜抽芯结构，其特征是动模(1)上设有铲基(12)，一级滑块(3)上设有铲基嵌口，铲基(12)与铲基嵌口适配嵌合。
  9. 根据权利要求1至7中任一项所述的油缸滑块内斜抽芯结构，其特征是动模(1)上设有油缸(9)，油缸(9)的活塞杆与一级滑块(3)连接。
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CN117445317B (zh) * 2023-12-25 2024-03-19 广州导新模具注塑有限公司 一种注塑模具用多角度复合内抽的抽芯机构

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