CN103551439B - Non-pollution cold extruding molding method and cold extruding mould for packaging container flange - Google Patents
Non-pollution cold extruding molding method and cold extruding mould for packaging container flange Download PDFInfo
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- CN103551439B CN103551439B CN201310557415.4A CN201310557415A CN103551439B CN 103551439 B CN103551439 B CN 103551439B CN 201310557415 A CN201310557415 A CN 201310557415A CN 103551439 B CN103551439 B CN 103551439B
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 12
- 238000000465 moulding Methods 0.000 title claims abstract description 11
- 238000000641 cold extrusion Methods 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000009713 electroplating Methods 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims description 23
- 239000011265 semifinished product Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000007127 saponification reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
一种包装容器法兰无污染冷挤压成型方法及模具，其特征是使经过落料和成型模块冲压成型的，法兰凸台厚度一致的法兰毛坯，经过一个上端呈倒锥状的凸模的作用，使法兰凸台上的材料沿法兰轴向产生流动，最终在法兰孔中形成车丝所需的壁厚，进入后续的切角、车丝和电镀得到法兰成品。本发明具有模具结构简单，制造方便，无污染，能提高成品率，降低制造成本的优点。
A pollution-free cold extrusion molding method and mold for a flange of a packaging container, which is characterized in that a flange blank formed by blanking and stamping of a forming module and having the same thickness as a flange boss passes through an inverted cone-shaped boss at the upper end. The role of the mold makes the material on the flange boss flow along the axial direction of the flange, and finally forms the wall thickness required for threading in the flange hole, and enters the subsequent corner cutting, threading and electroplating to obtain the finished flange. The invention has the advantages of simple mold structure, convenient manufacture, no pollution, improved yield and reduced manufacturing cost.
Description
技术领域 technical field
本发明涉及一种包装容器制造方法及模具，尤其是包装容器桶塞法兰的冷挤压方法及模具，具体地说是一种包装桶法兰无污染冷挤压成型方法及冷挤压模具。 The invention relates to a manufacturing method and mold for a packaging container, especially a cold extrusion method and mold for a bung flange of a packaging container, in particular to a pollution-free cold extrusion molding method for a packaging barrel flange and a cold extrusion mold .
背景技术 Background technique
目前，包装容器桶塞法兰的制造均采用冷挤压工艺，为了便于冷挤压成型，在落料、成型后需进行半小时以上的磷化皂化处理，然后再上模进行冷挤压，使法兰凸台内表面的材料在冷挤压模具中的凸模的作用下的沿轴向产生流成，形成所需的车丝内圈。在磷化皂化过程中对环境产生严重的影响，车间内会漂浮大量的皂化物，而磷化皂化处理过程中产生的废液需要进行处理后才能排放，不仅污染了环境，而且延长了制造周期，增加了制造成本。图1是未冷挤压前的法兰毛坯的示意图，图2是经过冷挤压后的法兰半成品示意图，从图2中可以看出，法兰凸台上部的材料在冷挤压模具的作用下流动到凸台根部，使凸台根部的厚度达到车丝所需的厚度。图3是现有的凸模的示意图，由于凸模上部的挤压作用区与法兰凸台内壁之间为面接触，因此冷挤压过程中材料流动性差，会出现高度不等的现象，极易形成抛物线形缺口，影响了产品合格率，必须加以改进。 At present, the manufacture of the bung flange of the packaging container adopts the cold extrusion process. In order to facilitate the cold extrusion molding, it needs to be phosphating and saponifying for more than half an hour after blanking and molding, and then the upper mold is used for cold extrusion. Make the material on the inner surface of the flange boss flow in the axial direction under the action of the punch in the cold extrusion die to form the required inner ring of the thread. The process of phosphating and saponification has a serious impact on the environment. A large amount of saponification will float in the workshop, and the waste liquid generated in the process of phosphating and saponification needs to be treated before it can be discharged, which not only pollutes the environment, but also prolongs the manufacturing cycle. , increasing the manufacturing cost. Figure 1 is a schematic diagram of the flange blank before cold extrusion, and Figure 2 is a schematic diagram of the semi-finished flange after cold extrusion. It can be seen from Figure 2 that the material on the upper part of the flange boss is in the cold extrusion die Under the action, it flows to the root of the boss, so that the thickness of the root of the boss reaches the thickness required by the thread. Figure 3 is a schematic diagram of the existing punch. Since the extrusion action area on the upper part of the punch is in surface contact with the inner wall of the flange boss, the fluidity of the material during the cold extrusion process is poor, and there will be a phenomenon of unequal height. It is very easy to form a parabolic gap, which affects the product qualification rate and must be improved.
发明内容 Contents of the invention
本发明的目的是针对现有的包装容器桶塞法兰冷挤压过程中需进行磷化皂化以增加材料的流动性，而磷化皂化不仅污染环境而且延长了制造周期，在冷挤压过程中由于面接触极易造成挤压高度不一致及开口的缺陷等一系列问题，发明一种通过对冷挤压凸模进行改进，使材料由面挤压改为线挤压同时可省去磷化皂化过程，减少环境污染的包装桶法兰无污染冷挤压成型方法，同时提供一种相配的冷挤压模具。 The purpose of the present invention is to carry out phosphating and saponification to increase the fluidity of the material in the cold extrusion process of the flange of the existing packaging container bung, and the phosphating and saponification not only pollutes the environment but also prolongs the manufacturing cycle. Due to a series of problems such as inconsistency in extrusion height and opening defects caused by surface contact, a cold extrusion punch is invented to change the material from surface extrusion to line extrusion and save phosphating. The saponification process reduces environmental pollution by a non-polluting cold extrusion molding method for the flange of the packaging barrel, and at the same time provides a matching cold extrusion mold.
本发明的技术方案之一是： One of technical solutions of the present invention is:
一种包装容器法兰无污染冷挤压成型方法，其特征是使经过落料和成型模块冲压成型的，法兰凸台厚度一致的法兰毛坯，经过一个上端呈倒锥状的凸模的作用，使法兰凸台上的材料沿法兰轴向产生流动，最终在法兰孔中形成车丝所需的壁厚，进入后续的切角、车丝和电镀得到法兰成品。 A pollution-free cold extrusion molding method for a flange of a packaging container, which is characterized in that the flange blank formed by blanking and stamping of the forming module and having the same thickness as the flange boss is passed through a punch with an inverted cone shape at the upper end. The function makes the material on the flange boss flow along the axial direction of the flange, and finally forms the wall thickness required for threading in the flange hole, and enters the subsequent corner cutting, threading and electroplating to obtain the finished flange.
在冷挤压时应在所述的凸模上加注冷压油以提高材料的流动性。 During cold extrusion, cold pressing oil should be added to the punch to improve the fluidity of the material.
所述的倒锥状凸模的半锥角介于0.1-5度之间，所述的倒锥状凸模与法兰凸台内壁之间为线接触使法兰凸台内壁材料产生流动；所述的倒锥状凸模的大锥底与凸模上端的便于法兰毛坯导入的倒角底部相连。 The semi-cone angle of the inverted cone-shaped punch is between 0.1-5 degrees, and the line contact between the inverted cone-shaped punch and the inner wall of the flange boss causes the material on the inner wall of the flange boss to flow; The large conical bottom of the inverted cone-shaped punch is connected to the chamfered bottom at the upper end of the punch to facilitate the introduction of the flange blank.
本发明的技术方案之二是： The second technical scheme of the present invention is:
一种权利要求1所述冷挤压成型方法使用的冷挤压模具，它包括上模3、芯棒4、凹模6和凸模7，芯棒4安装在上模3中并与打料棒1相抵，凸模7安装在凹模6中，凸模7的下部支承在凸模固定座8上，凸模固定座8安装在定位板10上，用于将凹模6与凸模7分离以方便法兰半成品5取出的顶杆9安装在定位板10中，其特征是所述的凸模7的上端设有挤压作用区，挤压作用区的最大直径小于凸模7非挤压作用区的直径，所述的挤压作用区由便于法兰半成品5置入的倒角12和与倒角12的下端相连的倒锥体13组成，倒锥体13的大端与倒角12的底部相交。 A kind of cold extrusion mold that the cold extrusion forming method described in claim 1 uses, it comprises patrix 3, mandrel 4, die 6 and punch 7, and mandrel 4 is installed in patrix 3 and beats material The rod 1 is offset, the punch 7 is installed in the die 6, the lower part of the punch 7 is supported on the punch holder 8, and the punch holder 8 is installed on the positioning plate 10, which is used to connect the die 6 and the punch 7 The push rod 9 that is separated to facilitate the removal of the flange semi-finished product 5 is installed in the positioning plate 10. It is characterized in that the upper end of the punch 7 is provided with an extrusion zone, and the maximum diameter of the extrusion zone is smaller than that of the punch 7 without extrusion. The diameter of the pressure action zone, the described extrusion action zone is made up of the chamfer 12 that is convenient to insert the flange semi-finished product 5 and the inverted cone 13 connected with the lower end of the chamfer 12, the big end of the inverted cone 13 is connected with the chamfer The bottom of 12 intersects.
所述的倒锥体的锥顶半角介于0.1-5度之间。 The apex half-angle of the inverted cone is between 0.1-5 degrees.
本发明的有益效果： Beneficial effects of the present invention:
本发明省去了对环境污染严重的磷化皂化工艺，大大改善了工作环境，降低了生产成本，不仅缩短了制造时间，使经过落料成型后的毛坯可直接进入冷挤压工艺，而且由于材料变形是采用线接触挤压，流动性好，不会出现高度不一致的情况，更不会出现常见的抛物线缺口，使产品的合格率大幅度提高。 The invention saves the phosphating and saponification process which pollutes the environment seriously, greatly improves the working environment, reduces the production cost, not only shortens the manufacturing time, but also enables the blanks after blanking to enter the cold extrusion process directly, and because The material deformation adopts line contact extrusion, which has good fluidity, no height inconsistency, and no common parabolic gap, which greatly improves the pass rate of the product.
本发明方法简单，模具易于实现，仅需将现有的圆柱挤压面改为圆锥形挤压面，模具加工十分方便，仅需在冷挤压过程中适当地加一些冷挤油即可保证良好的挤压性能。 The method of the invention is simple, and the mold is easy to realize. It only needs to change the existing cylindrical extrusion surface into a conical extrusion surface, and the mold processing is very convenient. It only needs to add some cold extrusion oil in the cold extrusion process to ensure Good extrusion properties.
本发明具有模具结构简单，制造方便，无污染，能提高成品率，降低制造成本的优点。 The invention has the advantages of simple mold structure, convenient manufacture, no pollution, improved yield and reduced manufacturing cost.
附图说明 Description of drawings
图1是经过落料成型后的法兰的结构示意图。 Figure 1 is a schematic structural view of a flange after blanking.
图2是图1所示的法兰经冷挤压后的结构示意图。 Fig. 2 is a schematic structural view of the flange shown in Fig. 1 after cold extrusion.
图3是现有的冷挤压凸模的结构示意图。 Fig. 3 is a structural schematic diagram of an existing cold extrusion punch.
图4是本发明的冷挤压模具的结构示意图。 Fig. 4 is a structural schematic diagram of the cold extrusion die of the present invention.
图5是本发明的冷挤压凸模的放大结构示意图。 Fig. 5 is an enlarged structural schematic view of the cold extrusion punch of the present invention.
具体实施方式 Detailed ways
下面结合附图和实施例对本发明作进一步的说明。 The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
实施例一。 Embodiment one.
如图1-5所示。 As shown in Figure 1-5.
一种包装容器法兰无污染冷挤压成型方法，首先，对冷挤压凸模进行改进，将图3所示的冷挤压凸模的小直径圆柱作用面改为图5所示的圆锥形作用面，将修改后的凸模安装在图4所示的模具上启动冷挤压设备，即可使经过落料和成型模块冲压成型的，法兰凸台厚度一致的法兰毛坯，经过一个上端呈倒锥状的凸模的线接触挤压作用，在挤压过程中或挤压前可在所述的凸模上加注冷压油以提高材料的流动性，从而使法兰凸台上的材料沿法兰轴向产生流动，即将图1所示的法兰凸台一致的法兰毛坯挤压成图2所示的法兰凸台厚度不一致的法兰半成品，最终在法兰孔中形成车丝所需的壁厚（图2），在此过程中省去了传统的磷化皂化工艺，不仅可省去这一工艺所需的半小时时间，而且不会对环境产生影响，无需污水处理，冷挤压后的法兰毛坯即可进入后续的切角、车丝和电镀得到法兰成品。具体实施时，为了保证材料冷挤压后的弹性恢复，所述的倒锥状凸模的半锥角应介于0.1-5度之间，其余的均与现有的冷挤压模具相同，如凸模的倒角，因此倒锥状凸模的大锥底应与凸模上端的便于法兰毛坯导入的倒角底部相连。 A pollution-free cold extrusion molding method for the flange of a packaging container. First, the cold extrusion punch is improved, and the small-diameter cylindrical active surface of the cold extrusion punch shown in Figure 3 is changed to a cone as shown in Figure 5 On the forming surface, install the modified punch on the mold shown in Figure 4 to start the cold extrusion equipment, so that the flange blank with the same thickness of the flange boss after blanking and forming modules can be stamped and formed. The line contact extrusion effect of a punch with an inverted cone shape at the upper end, during the extrusion process or before extrusion, cold pressure oil can be added to the punch to improve the fluidity of the material, so that the flange convex The material on the table flows along the axial direction of the flange, that is, the flange blank with the same flange boss as shown in Figure 1 is extruded into the flange semi-finished product with different thickness of the flange boss shown in Figure 2, and finally on the flange The wall thickness required for threading is formed in the hole (Figure 2), and the traditional phosphating and saponification process is omitted in this process, which not only saves half an hour for this process, but also has no impact on the environment , without sewage treatment, the flange blank after cold extrusion can enter the subsequent corner cutting, threading and electroplating to obtain the finished flange. During specific implementation, in order to ensure the elastic recovery of the material after cold extrusion, the half-cone angle of the inverted cone punch should be between 0.1-5 degrees, and the rest are the same as the existing cold extrusion dies. Such as the chamfering of the punch, so the large cone bottom of the inverted cone punch should be connected to the chamfer bottom at the upper end of the punch to facilitate the introduction of the flange blank.
实施例二。 Embodiment two.
如图4、5所示。 As shown in Figure 4 and 5.
一种冷挤压成型模具，它包括上模3、芯棒4、凹模6和凸模7，芯棒4安装在上模3中并与打料棒1相抵，上模3与上模板2相连，上模板2与冷挤压设备的挤压头相连并随之上下移动，凸模7安装在凹模6中，凸模7的下部支承在凸模固定座8上，凸模固定座8安装在定位板10上，定位板10安装在下模板11上，下模板11安装在冷挤压设备的工作台上，如图4所示，用于将凹模6与凸模7分离以方便法兰半成品5取出的顶杆9安装在定位板10中，所述的凸模7的上端设有挤压作用区14，挤压作用区14的最大直径小于凸模7非挤压作用区15的直径，所述的挤压作用区14由便于产品5置入的倒角12和与倒角12的下端相连的倒锥体13组成，倒锥体13的大端与倒角12的底部相交，如图5所示。所述的倒锥体的锥顶半角介于0.1-5度之间。冷挤压时，先将上模板2抬离凹模6，将冲压后的法兰毛坯（图1所示）装入凹模6中，使法兰凸台边内腔与凸模7上端的倒角12处接触，，启动上模板2向下移动将法兰毛坯向下挤压，在凹模6、凸模7和芯棒4的共同作用下，使法兰凸台边下部的材料按设定的路线产生塑性流动最终形成图2所示的半成品，并形成车丝所需的壁厚，经过后续的切角、车丝及电镀即可得到法兰成品，并最终与包装容器相连形成固定桶塞的法兰座。 A cold extrusion molding die, which includes an upper die 3, a mandrel 4, a die 6 and a punch 7, the mandrel 4 is installed in the upper die 3 and is offset against the punching rod 1, and the upper die 3 and the upper die 2 Connected, the upper template 2 is connected with the extrusion head of the cold extrusion equipment and moves up and down accordingly, the punch 7 is installed in the die 6, the lower part of the punch 7 is supported on the punch holder 8, and the punch holder 8 Installed on the positioning plate 10, the positioning plate 10 is installed on the lower template 11, and the lower template 11 is installed on the workbench of the cold extrusion equipment, as shown in Figure 4, is used to separate the die 6 from the punch 7 to facilitate the method The ejector pin 9 taken out of the blue semi-finished product 5 is installed in the positioning plate 10, and the upper end of the punch 7 is provided with an extrusion zone 14, and the maximum diameter of the extrusion zone 14 is smaller than that of the non-extrusion zone 15 of the punch 7. Diameter, described extruding action area 14 is made up of chamfer 12 that is convenient for product 5 to insert and the inverted cone 13 that links to each other with the lower end of chamfer 12, and the big end of inverted cone 13 intersects with the bottom of chamfer 12, As shown in Figure 5. The apex half-angle of the inverted cone is between 0.1-5 degrees. During cold extrusion, the upper template 2 is first lifted away from the die 6, and the stamped flange blank (shown in Figure 1) is put into the die 6, so that the inner cavity of the flange boss and the upper end of the punch 7 Chamfering at 12 points, start the upper template 2 to move downward to squeeze the flange blank downward, and under the joint action of the die 6, the punch 7 and the mandrel 4, the material at the lower part of the flange boss is pressed The set route produces plastic flow and finally forms the semi-finished product shown in Figure 2, and forms the wall thickness required for threading. After subsequent corner cutting, threading and electroplating, the finished flange can be obtained, and finally connected with the packaging container to form Flange seat for fixing bung.
本发明未涉及部分均与现有技术相同或可采用现有技术加以实现。 The parts not involved in the present invention are the same as the prior art or can be realized by adopting the prior art.
Claims (4)
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| CN201310557415.4A CN103551439B (en) | 2013-11-12 | 2013-11-12 | Non-pollution cold extruding molding method and cold extruding mould for packaging container flange |
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| CN104289652A (en) * | 2014-11-04 | 2015-01-21 | 贵州航天精工制造有限公司 | Extrusion forming cold-upsetting die and application method thereof |
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| CN101530865A (en) * | 2008-12-31 | 2009-09-16 | 张长国 | 125 motorcycle engine starting gear cold extrusion forming method and dies thereof |
| CN201366448Y (en) * | 2009-03-02 | 2009-12-23 | 湖北天轮机械有限公司 | Backward cold extrusion die for rear stabilizer bar sleeve of car |
| CN102284663A (en) * | 2011-06-09 | 2011-12-21 | 无锡东海锻造有限公司 | Precision forging process and die for flange |
| RU2481915C1 (en) * | 2011-10-07 | 2013-05-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Алтайский государственный технический университет им. И.И. Ползунова" (АлтГТУ) | Die for making axisymmetric articles without die grades |
| CN103191945A (en) * | 2012-01-10 | 2013-07-10 | 江苏舒恒管夹制造有限公司 | Method and device for high-pressure hydraulic flange plasticity forming |
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