WO2021120657A1 - 具有活动式导向块的侧冲机构 - Google Patents

具有活动式导向块的侧冲机构 Download PDF

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Publication number
WO2021120657A1
WO2021120657A1 PCT/CN2020/110250 CN2020110250W WO2021120657A1 WO 2021120657 A1 WO2021120657 A1 WO 2021120657A1 CN 2020110250 W CN2020110250 W CN 2020110250W WO 2021120657 A1 WO2021120657 A1 WO 2021120657A1
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WO
WIPO (PCT)
Prior art keywords
guide block
slider
punch
boss
movable base
Prior art date
Application number
PCT/CN2020/110250
Other languages
English (en)
French (fr)
Inventor
钱晓晨
骆兴顺
杨勇
李�杰
Original Assignee
苏州和林微纳科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州和林微纳科技股份有限公司 filed Critical 苏州和林微纳科技股份有限公司
Publication of WO2021120657A1 publication Critical patent/WO2021120657A1/zh
Priority to US17/481,241 priority Critical patent/US20220001437A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/24Perforating, i.e. punching holes
    • B21D28/34Perforating tools; Die holders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/24Perforating, i.e. punching holes
    • B21D28/28Perforating, i.e. punching holes in tubes or other hollow bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/10Die sets; Pillar guides
    • B21D37/12Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/003Positioning devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
    • B21D45/006Stripping-off devices

Definitions

  • the invention belongs to the technical field of mold processing, and specifically relates to a side punching mechanism with a movable guide block for products with small side holes and a small number of flanges at the mouth.
  • the side punch structure is shown in Figure 1.
  • the die core knife edge 1 is fixed in the middle of the lower fixed plate, and the product 4 is pressed into the die core knife edge 1 by the upper ejector rod to realize product positioning.
  • the slider is fitted with a spring, it is installed in the slider seat 2 in a sliding state.
  • the punch guide block 21 is tightly fitted and fixed in the dovetail groove of the slider seat, the punch 3 is fixed in the slider, and the punch guide block 21 faces the punch head Department of guidance.
  • the push slider obliquely punches down with the floating plate and then contacts the oblique surface of the slider, which drives the punch 3 forward and enters the die edge 1 to complete the side punch.
  • the guide block 21 must be kept a certain distance from the outer edge of the product flange 41 to make room for the product to be ejected and smoothly. Enter the die. That is to say, the head of the punch 3 is suspended and released when punching. At the same time, because the side hole of the product is small, the punch head is very easy to break without protection. In addition, the wall is thin and the product cannot be carried out from the outside. After pressing the material, the edge of the hole will have a tendency to turn out and deform after punching.
  • the present invention provides a side punching mechanism with movable guide blocks to protect the head of the punch and press the material outside the product to better perform side punching. .
  • a side punch mechanism with a movable guide block includes a slider seat arranged in a lower mold, a slider is arranged on the slider seat, a side cutting punch is arranged at the front end of the slider, and the front of the slider is arranged
  • a movable guide block slidably connected with the slider base, the movable guide block includes a concave movable base and a boss arranged on the movable base, and the front end of the boss protrudes forward and extends out.
  • the movable base, the front end of the boss is in the shape of an inner concave arc, the inner concave arc is matched with the arc of the outer surface of the product, the boss is placed in the center of the movable base, and the boss is A through hole is provided for the side cutting punch to enter, and the slider slides on the slider seat along the concave space of the movable base to drive the side cutting punch to move in the through hole.
  • the movable base includes two L-shaped bent side wings arranged at the bottom of the boss, and the side wings are bent in the direction of the sliding block to form an L-shaped enclosing a concave space.
  • an inclined surface is provided at the rear end of the movable base.
  • the movable base is provided with a reset through hole, a spring is arranged in the reset through hole, one end of the spring abuts against the knife edge of the mold core, and the abutting end of the spring and the mold core knife is located at Below the product flange, the other end of the spring is placed in the sliding block to cooperate with the resetting of the sliding block.
  • the reset through hole is placed directly below the boss.
  • the inclined surface on the movable base is matched with the inclined surface of the side thrust oblique punch fixed on the floating plate, and the side thrust oblique punch is arranged in an inner and outer split type, including the inner side thrust oblique punch and the covering Push diagonally on the inside and push diagonally on the outside.
  • the inclined surface of the outer pusher is matched with the inclined surface of the movable base.
  • the inclined surface of the inner side pusher is matched with the inclined surface of the slider.
  • the distance that the boss extends beyond the movable base is greater than the flange width of the product.
  • a counterbore is provided on the side wing, and a linear spring is arranged in the counterbore.
  • the beneficial effects of the present invention are embodied in that by providing a protective section against the punch head, the punching strength and the stability of the side punch are improved, and at the same time, by locally pressing the side wall of the product around the small hole, it can effectively improve the The shortcomings of the small holes being turned out and deformed when pressing the material.
  • Figure 1 Schematic diagram of the side punch structure of the prior art of the present invention.
  • FIG. 1 Schematic diagram of the structure of the present invention.
  • Figure 3 A schematic diagram of the three-dimensional structure of the present invention.
  • Figure 4 A schematic view of the three-dimensional structure of the present invention from another perspective.
  • Figure 5 Schematic diagram of the application structure of the present invention in a mold.
  • the present invention discloses a side punching mechanism with movable guide blocks. As shown in FIG. 2 to FIG. 3, it includes a slider seat 14 arranged in the lower mold. A sliding block 13 is arranged on the sliding block base 14, and a side cutting punch 12 is arranged at the front end of the sliding block 13. The side cutting punch 12 may adopt a split side cutting punch to better adapt to the punching of the product. When assembling, the sliding block 13 can be assembled from the rear end of the sliding block 13.
  • a movable guide block 15 is also slidably arranged on the slider base 14, and the movable guide block 15 is placed in front of the slider 13.
  • the movable guide block 15 includes a concave movable base 151 and a boss 152 arranged on the movable base 151.
  • the front end of the boss 152 protrudes forward and extends from the movable base 151.
  • the boss 152 The front end is in the shape of an inner concave arc, and the inner concave arc matches the outer surface arc of the product 10, so that when the product 10 is punched, the front end of the boss 152 can press the punching of the product 10 Area to prevent the material from eversion and deformation during punching.
  • the distance that the boss 152 extends from the movable base 151 is greater than the flange width of the product.
  • the boss 152 is placed at the center of the movable base 151.
  • the movable base 151 includes two L-shaped bent side wings arranged at the bottom of the boss 152, and the side wings are bent in the direction of the slider to form an L shape Enclosed into a concave space.
  • the boss 152 is provided with a through hole for the side cutting punch 12 to enter, and the slider 13 slides on the slider seat 14 along the concave space of the movable base 151 to drive the side cutting punch The sub 12 moves in the through hole.
  • the upper rear end of the movable base 151 is provided with a slope, the movable base 151 is provided with a reset through hole 153, and the reset through hole 153 is placed directly under the boss.
  • a spring is arranged in the reset through hole 153, and one end of the spring abuts against the knife edge 9 of the mold core. In order not to interfere with the flange of the product, the abutting end of the spring and the knife edge of the mold core is located below the product flange. The other end of the spring is placed in the sliding block 13 to cooperate with the resetting of the sliding block 13.
  • a counterbore 154 is opened on the side wing, and a linear spring is arranged in the counterbore.
  • the inclined surface on the movable base 151 is matched with the inclined surface of the side thrust oblique punch 11 fixed on the floating board 4.
  • the floating plate 4 is placed on the lower mold base 2 through a floating bolt assembly 17.
  • the side thrust oblique punch 11 is arranged in an inner and outer split type, including an inner thrust oblique punch 111 and an outer thrust oblique punch 112 that covers the outer side of the inner thrust oblique punch 111.
  • the inclined surface of the outer pusher 112 is matched with the inclined surface of the movable base, and the inner inclined surface of the pusher 111 is matched with the inclined surface of the slider.
  • the side push oblique punch 11 is connected to the floating plate 4, that is, the side push oblique punch 11 is pressed and locked by a screw plug locked into the side of the floating plate 4.
  • the product 10 is fed into the knife edge 9 of the mold core through the feeding and splitting clamp 5, and when the mold is closed, the top of the product is compressed by the upper ejector rod 6 fixed on the upper fixing block 7.
  • the upper fixed block 7 contacts the floating plate 4, and the floating plate 4 drives the side push oblique punch 11 to press down.
  • the oblique surface of the side push oblique punch 11 contacts the oblique surface of the slider 13 and the movable guide block 15, and pushes both toward the product 10.
  • the direction moves in the slider seat 14.
  • the boss 152 contacts the product, it is restricted from moving forward due to the action of the movable base 151. At this time, the part to be punched out of the product 10 is pressed by the arc-shaped front end of the boss 152. material.
  • the sliding block 13 continues to move forward under the action of the side push oblique punch 11, and drives the side cutting punch 12 to penetrate the product 10 to complete the side punch.
  • the invention has a simple and compact structure, the two sliding parts realize independent movement without interfering with each other, and have no influence on the introduction and ejection of the product.
  • the simple and practical structure achieves the elastic pressing effect of the progressive die and improves the product quality.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

一种具有活动式导向块的侧冲机构,包括设置于下模内的滑块座(14),滑块座(14)上设置有一滑块(13),滑块(13)前端设置有侧切冲子(12),所述滑块(13)的前方设置有一与所述滑块座(14)滑配连接的活动导向块(15),活动导向块(15)包括呈凹形的活动底座(151)及设置于活动底座(151)上的凸台(152),凸台(152)的前端向前凸设延伸出活动底座(151),凸台(152)前端呈内凹弧形状,凸台(152)置于活动底座(151)中心,凸台(152)上开有通孔,滑块(13)在滑块座(14)上沿活动底座(151)的凹形空间内滑动,带动所述侧切冲子(12)在通孔内运动。该侧冲机构通过对冲子头部提供保护段,提高了冲子的冲切强度及侧冲的稳定性;同时通过对小孔周围产品侧壁局部压料,能有效改善无压料时小孔外翻变形的缺点。

Description

具有活动式导向块的侧冲机构 技术领域
本发明属于模具加工技术领域,具体涉及一种用于侧孔较小、口部带有少量法兰产品的具有活动式导向块的侧冲机构。
背景技术
对于多工位深拉伸冲床上生产的带侧孔的拉深类产品产品,尤其是侧壁有一个小孔,并且口部带有少量法兰的产品。其侧孔成型,一般采用的侧冲结构如图1所示,模仁刀口1固定于下固定板中间,产品4被上顶杆压入模仁刀口1上实现产品定位。滑块配入弹簧后装入滑块座2呈滑配状态,冲子导向块21在滑块座燕尾槽内紧配固定,冲子3固定于滑块中,冲子导向块21对冲子头部进行导向。当合模时,推滑块斜冲随浮升板下行后接触滑块斜面,带动冲子3前行并进入模仁刀口1完成侧冲。
技术问题
但由于产品口部带有少量法兰41,为了避免产品法兰41与导向块21的干涉,导向块21必须与产品法兰41外缘保留一段距离,腾出空间以便于产品顺利顶出和进入下模。也就是说,冲子3冲孔时头部为悬空放开状态,同时,由于产品侧孔较小,冲子头部无保护时极易崩断,此外由于壁薄且无法从外部对产品进行压料,冲孔后孔边缘会有外翻变形倾向。
技术解决方案
为了解决现有技术的不足,本发明提供了一种具有活动式导向块的侧冲机构,以对冲子的头部得到保护,且能对产品外部进行压料,以更好的进行侧冲孔。
本发明的目的通过以下技术方案来实现。
具有活动式导向块的侧冲机构,包括设置于下模内的滑块座,所述滑块座上设置有一滑块,所述滑块前端设置有侧切冲子,所述滑块的前方设置有一与所述滑块座滑配连接的活动导向块,所述活动导向块包括呈凹形的活动底座及设置于活动底座上的凸台,所述凸台的前端向前凸设延伸出所述活动底座,所述凸台的前端呈内凹弧形状,所述内凹弧形与所述产品的外表面弧形配合,所述凸台置于所述活动底座中心,所述凸台上开设有一用于侧切冲子进入的通孔,所述滑块在所述滑块座上沿所述活动底座的凹形空间内滑动,带动所述侧切冲子在所述通孔内运动。
优选地,所述活动底座包括两个设置于所述凸台底部的L形折弯侧翼,且所述侧翼向滑块方向折弯呈L状围设成一个凹形空间。
优选地,所述活动底座后端设置有斜面。
优选地,所述活动底座上开设有一复位通孔,所述复位通孔内设置有一弹簧,所述弹簧的一端与模仁刀口抵接,且所述弹簧与所述模仁刀口抵接端位于产品法兰的下方,所述弹簧的另一端置于滑块内,用于配合滑块的复位。
优选地,所述复位通孔置于所述凸台的正下方。
优选地,所述活动底座上的斜面与固定于浮升板上的侧推斜冲的斜面相配合,所述侧推斜冲呈内、外分体式设置,包括内侧推斜冲及包覆于内侧推斜冲外侧的外侧推斜冲。
优选地,所述外侧推斜冲的斜面与所述活动底座的斜面相配合。
优选地,内侧推斜冲的斜面与所述滑块的斜面相配合。
优选地,所述凸台延伸出所述活动底座的距离大于所述产品的法兰宽度。
优选地,所述侧翼上开设有沉头孔,所述沉头孔内设置有线性弹簧。
有益效果
本发明的有益效果体现在:通过对冲子头部提供保护段,提高了冲子的冲切强度及侧冲的稳定性,同时,通过对小孔周围产品侧壁局部压料,能有效改善无压料时小孔外翻变形的缺点。
附图说明
图1:本发明现有技术的侧冲结构示意图。
图2:本发明结构示意图。
图3:本发明立体结构示意图。
图4:本发明另一视角的立体结构示意图。
图5:本发明在模具中的使用结构示意图。
本发明的实施方式
以下结合实施例具体阐述本发明的技术方案,本发明揭示了一种具有活动式导向块的侧冲机构,结合图2-图3所示,包括设置于下模内的滑块座14,所述滑块座14上设置有一滑块13,所述滑块13前端设置有侧切冲子12。所述侧切冲子12可采用分体式侧切冲子,以更好的适应产品的冲孔。装配时,从滑块13的后端装配入滑块即可。
所述滑块座14上还滑配设置有活动导向块15,所述活动导向块15置于所述滑块13的前方。所述活动导向块15包括呈凹形的活动底座151及设置于活动底座151上的凸台152,所述凸台152的前端向前凸设延伸出所述活动底座151,所述凸台152的前端呈内凹弧形状,所述内凹弧形与所述产品10的外表面弧形配合,从而使产品10在冲孔时,所述凸台152的前端可以压住产品10的冲孔区域,以避免在冲孔时材料产生外翻变形。为了不影响产品的放置,所述凸台152延伸出所述活动底座151的距离大于所述产品的法兰宽度。
所述凸台152置于所述活动底座151中心,所述活动底座151包括两个设置于所述凸台152底部的L形折弯侧翼,且所述侧翼向滑块方向折弯呈L状围设成一个凹形空间。所述凸台152上开设有一用于侧切冲子12进入的通孔,所述滑块13在所述滑块座14上沿所述活动底座151的凹形空间内滑动,带动所述侧切冲子12在所述通孔内运动。
所述活动底座151后端上部设置有斜面,所述活动底座151上开设有一复位通孔153,所述复位通孔153置于所述凸台的正下方。所述复位通孔153内设置有一弹簧,所述弹簧的一端与模仁刀口9抵接。为了不与产品的法兰产生干涉,所述弹簧与所述模仁刀口抵接端位于产品法兰的下方。所述弹簧的另一端置于滑块13内,用于配合滑块13的复位。为了给活动导向块15提供复位力,所述侧翼上开设有沉头孔154,所述沉头孔内设置有线性弹簧。
所述活动底座151上的斜面与固定于浮生板4上的侧推斜冲11的斜面相配合。所述浮升板4通过浮升螺栓组件17置于下模座2上。所述侧推斜冲11呈内、外分体式设置,包括内侧推斜冲111及包覆于内侧推斜冲111外侧的外侧推斜冲112。所述外侧推斜冲112的斜面与所述活动底座的斜面相配合,内侧推斜冲111的斜面与所述滑块的斜面相配合。所述侧推斜冲11与浮升板4连接,即通过浮升板4侧面锁入的螺塞进行侧推斜冲11的压住锁紧。
以下结合图5阐述下本发明在模具中实际使用时的原理。
产品10通过送料分夹5送入到模仁刀口9处,合模时,通过固定于上固定块7上的上顶杆6对产品的顶部进行压紧。上固定块7接触浮升板4,浮升板4带动侧推斜冲11下压,所述侧推斜冲11的斜面接触滑块13及活动导向块15的斜面,推动两者向产品10方向在所述滑块座14移动,当所述凸台152接触产品后,由于活动底座151的作用限制其继续前行,此时产品10的待冲裁处被凸台152的弧形前端面压料。滑块13在侧推斜冲11的作用下继续前行,带动侧切冲子12刺入产品10完成侧冲。
开模时,浮升板4和上固定块7归位,带动侧推斜冲11上行,滑块13和活动导向块15在弹簧作用下先后后退归位,直至活动导向块完全让开产品。完成侧冲后的产品通过模具的下顶杆1进行顶出。
本发明结构简单紧凑,两滑动部件实现独立运动互不干涉,对产品的导入和顶出也无影响,以简单实用的结构达到级进模弹性压料式效果,提升产品质量。
在本发明的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
当然本发明尚有多种具体的实施方式,在此就不一一列举。凡采用等同替换或者等效变换而形成的所有技术方案,均落在本发明要求保护的范围之内。

Claims (10)

  1. 具有活动式导向块的侧冲机构,其特征在于:包括设置于下模内的滑块座,所述滑块座上设置有一滑块,所述滑块前端设置有侧切冲子,所述滑块的前方设置有一与所述滑块座滑配连接的活动导向块,所述活动导向块包括呈凹形的活动底座及设置于活动底座上的凸台,所述凸台的前端向前凸设延伸出所述活动底座,所述凸台的前端呈内凹弧形状,所述内凹弧形与所述产品的外表面弧形配合,所述凸台置于所述活动底座中心,所述凸台上开设有一用于侧切冲子进入的通孔,所述滑块在所述滑块座上沿所述活动底座的凹形空间内滑动,带动所述侧切冲子在所述通孔内运动。
  2. 如权利要求1所述的具有活动式导向块的侧冲机构,其特征在于:所述活动底座包括两个设置于所述凸台底部的L形折弯侧翼,且所述侧翼向滑块方向折弯呈L状围设成一个凹形空间。
  3. 如权利要求1所述的具有活动式导向块的侧冲机构,其特征在于:所述活动底座后端设置有斜面。
  4. 如权利要求1所述的具有活动式导向块的侧冲机构,其特征在于:所述活动底座上开设有一复位通孔,所述复位通孔内设置有一弹簧,所述弹簧的一端与模仁刀口抵接,且所述弹簧与所述模仁刀口抵接端位于产品法兰的下方,所述弹簧的另一端置于滑块内,用于配合滑块的复位。
  5. 如权利要求4所述的具有活动式导向块的侧冲机构,其特征在于:所述复位通孔置于所述凸台的正下方。
  6. 如权利要求3所述的具有活动式导向块的侧冲机构,其特征在于:所述活动底座上的斜面与固定于浮升板上的侧推斜冲的斜面相配合,所述侧推斜冲呈内、外分体式设置,包括内侧推斜冲及包覆于内侧推斜冲外侧的外侧推斜冲。
  7. 如权利要求6所述的具有活动式导向块的侧冲机构,其特征在于:所述外侧推斜冲的斜面与所述活动底座的斜面相配合。
  8. 如权利要求7所述的具有活动式导向块的侧冲机构,其特征在于:内侧推斜冲的斜面与所述滑块的斜面相配合。
  9. 如权利要求1所述的具有活动式导向块的侧冲机构,其特征在于:所述凸台延伸出所述活动底座的距离大于所述产品的法兰宽度。
  10. 如权利要求2所述的具有活动式导向块的侧冲机构,其特征在于:所述侧翼上开设有沉头孔,所述沉头孔内设置有线性弹簧。
PCT/CN2020/110250 2019-12-17 2020-08-20 具有活动式导向块的侧冲机构 WO2021120657A1 (zh)

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