CN107877796A - A kind of mould of surface trimming cast gate - Google Patents
A kind of mould of surface trimming cast gate Download PDFInfo
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- CN107877796A CN107877796A CN201711266934.XA CN201711266934A CN107877796A CN 107877796 A CN107877796 A CN 107877796A CN 201711266934 A CN201711266934 A CN 201711266934A CN 107877796 A CN107877796 A CN 107877796A
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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
- B29C45/38—Cutting-off equipment for sprues or ingates
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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
- B29C45/38—Cutting-off equipment for sprues or ingates
- B29C2045/384—Cutting-off equipment for sprues or ingates cutting the sprue by a plunger movable into the runner channel
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
本发明揭示了一种自动切割浇口的模具,包括模座(5)、安装于所述模座(5)上的下模(3)以及与所述下模(3)相配合的上模(6),所述上、下模(6、3)之间设置有模型腔(7)和与所述模型腔(7)相连通的浇口(11),所述模座(5)内开设有第一空腔(5a),所述第一空腔(5a)内设置有与之滑动配合的料头顶针板(8),所述料头顶针板(8)由成型机台驱动轴(12)驱动,所述自动切割浇口的模具还包括浇口顶针(9),所述成型机台驱动轴(12)可驱动所述浇口顶针(9)切断所述浇口(11)。本发明将浇口分离提前至开模前,消除后续工序,有利于生产自动化,提高生产效率。
The invention discloses a mold for automatically cutting gates, comprising a mold base (5), a lower mold (3) mounted on the mold base (5), and an upper mold matched with the lower mold (3) (6), a mold cavity (7) and a gate (11) communicating with the mold cavity (7) are arranged between the upper and lower molds (6, 3), and the mold base (5) A first cavity (5a) is opened, and a material head ejector plate (8) slidingly fitted with it is arranged in the first cavity (5a), and the material head ejector plate (8) is driven by the molding machine (12) driving, the mold for automatically cutting the gate also includes a gate thimble (9), and the molding machine drive shaft (12) can drive the gate thimble (9) to cut off the gate (11) . The invention advances gate separation before mold opening, eliminates follow-up procedures, is beneficial to production automation, and improves production efficiency.
Description
技术领域technical field
本发明涉及注塑成型领域,特别涉及一种自动切割浇口的模具。The invention relates to the field of injection molding, in particular to a mold for automatically cutting gates.
背景技术Background technique
通常塑料件在注塑成型后,料头和产品通过浇口相连,工人需要对浇口进行修剪处理,劳动强度大,浇口修剪不美观。具体做法是开模后顶针将产品推出,取出产品再人工去除。由于此时塑料已经冷却,剪切后的浇口面不美观,产品品质上不去,依旧需要多次人工修剪才能将浇口修剪平整,劳动强度较大,增加了人工成本。Usually, after plastic parts are injection molded, the material head and the product are connected through the gate, and workers need to trim the gate, which is labor-intensive and the trimming of the gate is not beautiful. The specific method is to push the product out with the thimble after the mold is opened, take out the product and remove it manually. Since the plastic has cooled at this time, the gate surface after shearing is not beautiful, and the product quality cannot be improved. It still needs multiple manual trimming to trim the gate level, which is labor-intensive and increases labor costs.
发明内容Contents of the invention
本发明的目的在于针对现有技术中的上述缺陷,提供一种自动切割浇口的模具,可以自动切割浇口。The object of the present invention is to provide a mold for automatically cutting gates for the above-mentioned defects in the prior art, which can automatically cut gates.
为实现上述发明目的,本发明采用了如下技术方案:一种自动切割浇口的模具,包括模座、安装于所述模座上的下模以及与所述下模相配合的上模,所述上、下模之间设置有模型腔和与所述模型腔相连通的浇口,所述模座内开设有第一空腔,所述第一空腔内设置有与之滑动配合的料头顶针板,所述料头顶针板由成型机台驱动轴驱动,所述自动切割浇口的模具还包括浇口顶针,所述成型机台驱动轴驱动所述浇口顶针切断所述浇口。In order to realize the purpose of the above invention, the present invention adopts the following technical scheme: a mold for automatically cutting the gate, including a mold base, a lower mold installed on the mold base, and an upper mold matched with the lower mold. A mold cavity and a gate communicating with the mold cavity are arranged between the upper mold and the lower mold, and a first cavity is opened in the mold base, and a material that is slidably fitted is arranged in the first cavity. Head ejector plate, the material head ejector plate is driven by the driving shaft of the molding machine, the mold for automatically cutting the gate also includes a gate ejector, and the driving shaft of the molding machine drives the gate ejector to cut the gate .
此外,本发明还提出如下附属技术方案:In addition, the present invention also proposes the following subsidiary technical solutions:
所述模座还开设有与所述第一空腔相通的第二空腔,所述自动切割浇口的模具还包括与所述第二空腔滑动配合的浇口顶针板。The mold base is also provided with a second cavity communicating with the first cavity, and the mold for automatic gate cutting also includes a gate ejector plate slidingly fitted with the second cavity.
所述浇口顶针一端连接于所述浇口顶针板上,另一端设置于所述模型腔与所述浇口连接处。One end of the gate thimble is connected to the gate thimble plate, and the other end is arranged at the joint between the mold cavity and the gate.
所述第二空腔设置于所述第一空腔下方。The second cavity is disposed below the first cavity.
所述第二空腔的截面小于所述第一空腔的截面。The cross section of the second cavity is smaller than the cross section of the first cavity.
所述第二空腔的高度大于所述浇口顶针板的厚度。The height of the second cavity is greater than the thickness of the gate ejector plate.
所述自动切割浇口的模具还包括设置于所述浇口顶针板与所述料头顶针板之间的弹性件。The mold for automatically cutting the gate also includes an elastic member arranged between the gate ejector plate and the head ejector plate.
所述浇口顶针板上开设有安装孔,所述弹性件安装于所述安装孔内。An installation hole is opened on the gate ejector plate, and the elastic member is installed in the installation hole.
所述弹性件为弹簧。The elastic member is a spring.
相比于现有技术,本发明的优点在于:Compared with the prior art, the present invention has the advantages of:
1.传统的塑胶模具开模后产品与浇口相连,需二道工序进行人工剪切分离,而本发明将浇口分离提前至开模前,消除后续工序,有利于生产自动化,提高生产效率;1. After the traditional plastic mold is opened, the product is connected to the gate, which requires two processes for manual shearing and separation. However, the invention advances the separation of the gate to before the mold is opened, eliminating the subsequent process, which is conducive to production automation and improves production efficiency. ;
2.在模内切模具成型过程中,浇口分离的自动化保证浇口分离处外观一致性,而传统人工分离浇口工艺无法保证浇口分离处外观一致;2. During the molding process of in-mold cutting, the automation of gate separation ensures the appearance consistency of gate separation, while the traditional manual separation gate process cannot guarantee the appearance of gate separation;
3.模内切成型的自动化,避免了生产过程中无用的人为动作,而产品的全自动化机械剪切保证品质一致性,在产品大规模生产过程中较传统的模具有着不可拟比优势;3. The automation of in-mold cutting and molding avoids useless human actions in the production process, and the fully automated mechanical shearing of products ensures the consistency of quality, which has incomparable advantages over traditional molds in the mass production process of products;
4.在浇口未冷却时切断,切割更容易,而且切口质量更佳。4. Cut off when the gate is not cooled, the cutting is easier and the quality of the cut is better.
附图说明Description of drawings
图1是本发明自动切割浇口的模具合模时的结构示意图。Fig. 1 is the structure schematic diagram when the mold of automatic gate cutting of the present invention is closed.
图2是图1中A部的放大图。Fig. 2 is an enlarged view of part A in Fig. 1 .
图3是本发明自动切割浇口的模具切断浇口时的结构示意图。Fig. 3 is a schematic view of the structure of the automatic gate cutting mold of the present invention when the gate is cut off.
图4是本发明自动切割浇口的模具开模时的结构示意图。Fig. 4 is a schematic structural view of the mold opening of the automatic gate cutting mold of the present invention.
图5是本发明自动切割浇口的模具产品顶出时的结构示意图。Fig. 5 is a schematic structural view of the ejection of the mold product with automatic gate cutting according to the present invention.
具体实施方式Detailed ways
以下结合较佳实施例及其附图对本发明技术方案作进一步非限制性的详细说明。The technical solution of the present invention will be described in further non-limiting detail below in combination with preferred embodiments and accompanying drawings.
如图1至图5所示,对应于本发明一种较佳实施例的自动切割浇口的模具,包括底板2、与底板2相连的模座5、安装于模座5上的下模3、与下模3相配合的上模6以及安装于所述上模6上的顶板1。As shown in Figures 1 to 5, the mold corresponding to a preferred embodiment of the present invention automatically cuts the gate, including a base plate 2, a mold base 5 connected to the base plate 2, and a lower mold 3 installed on the mold base 5 , an upper mold 6 matched with the lower mold 3 and a top plate 1 installed on the upper mold 6 .
上、下模6、3之间设置有模型腔7和与模型腔7相连通的浇口11,熔融的塑料经过浇口11进入模型腔7内成型。模座5呈中空结构,其内设置有台阶5c,以台阶5c为界上侧为第一空腔5a,下侧为第二空腔5b,第二空腔5b的截面小于第一空腔5a的截面。A mold cavity 7 and a gate 11 communicating with the mold cavity 7 are arranged between the upper and lower molds 6 and 3, and molten plastic enters the mold cavity 7 through the gate 11 for molding. The mold base 5 has a hollow structure, and a step 5c is arranged in it. With the step 5c as the boundary, the upper side is the first cavity 5a, and the lower side is the second cavity 5b. The cross section of the second cavity 5b is smaller than that of the first cavity 5a. section.
在第一空腔5a内设置有与其滑动配合的料头顶针板8,料头顶针板8上安装有料头顶针14,料头顶针14的上端设置于模型腔7下方。当料头顶针板8上移时,料头顶针14可以将模型腔7内成型的产品顶出。The first cavity 5a is provided with a material head ejector plate 8 slidingly fitted thereon. The material head ejector plate 8 is equipped with a material head ejector pin 14 , and the upper end of the material head ejector pin 14 is arranged below the mold cavity 7 . When the material head ejector plate 8 moved up, the material head ejector pin 14 could eject the product formed in the mold cavity 7 .
在料头顶针板8和下模3之间设置有复位组件15,复位组件15包括设置于下模3和料头顶针板8之间的导向柱16以及套设在导向柱16上的弹簧17,弹簧17一端与下模3相抵,另一端与料头顶针板8相抵。A reset assembly 15 is arranged between the ejector plate 8 and the lower mold 3, and the reset assembly 15 includes a guide column 16 arranged between the lower mold 3 and the ejector plate 8 and a spring 17 sleeved on the guide column 16 , One end of spring 17 is offset against lower die 3, and the other end is offset against material head thimble plate 8.
在第二空腔5b内设置有与其滑动配合的浇口顶针板10,浇口顶针板10的厚度小于第二空腔5b的高度,即当浇口顶针板10和料头顶针板8分别置于第二空腔5b和第一空腔5a的最下方时,浇口顶针板10与料头顶针板8之间尚余一定的间隙(参考图1和图2)。该间隙的大小优选为与浇口11的厚度相同。浇口顶针板10上安装有浇口顶针9,浇口顶针9的另一端延伸至浇口11的下方。In the second cavity 5b, there is provided a gate ejector plate 10 slidingly fitted therewith, and the thickness of the gate ejector plate 10 is smaller than the height of the second cavity 5b, that is, when the gate ejector plate 10 and the head ejector plate 8 are respectively placed At the bottom of the second cavity 5b and the first cavity 5a, there is still a certain gap between the gate ejector plate 10 and the head ejector plate 8 (refer to FIG. 1 and FIG. 2 ). The size of the gap is preferably equal to the thickness of the gate 11 . A gate ejector pin 9 is installed on the gate ejector plate 10 , and the other end of the gate ejector pin 9 extends below the gate 11 .
在浇口顶针板10上开设有安装孔10a,安装孔10a内设置有弹性件13,弹性件13的上端与料头顶针板8相抵。弹性件13优选为弹簧。An installation hole 10 a is opened on the gate ejector plate 10 , and an elastic member 13 is arranged in the installation hole 10 a, and the upper end of the elastic member 13 is in contact with the head ejector plate 8 . The elastic member 13 is preferably a spring.
浇口顶针板10下方设置有成型机台驱动轴12,成型机台驱动轴12可驱动浇口顶针板10向上运动,使得浇口顶针9切断浇口11;当产品成型完毕,冷却后,成型机台驱动轴12推动浇口顶针板10与料头顶针板8接触,并带动料头顶针板8上行,将产品顶出模型腔7。当成型机台驱动轴12向下运动后,弹性件13将推动浇口顶针板10精确复位。There is a molding machine drive shaft 12 under the gate ejector plate 10, which can drive the gate ejector plate 10 to move upward, so that the gate ejector pin 9 cuts off the gate 11; when the product is formed and cooled, the molding The drive shaft 12 of the machine table pushes the gate ejector plate 10 to contact with the material head ejector plate 8, and drives the material head ejector plate 8 to go upward, and pushes the product out of the mold cavity 7. When the driving shaft 12 of the molding machine moves downward, the elastic member 13 will push the gate ejector plate 10 to reset precisely.
该自动切割浇口的模具的使用方法如下:The method of using the mold for automatic gate cutting is as follows:
第一步:(参考图1)合模:将上模6和顶板1安装至下模3上。The first step: (refer to FIG. 1 ) mold closing: install the upper mold 6 and the top plate 1 on the lower mold 3 .
第二步:射出注塑:将熔融的塑料注入模型腔7中。The second step: injection molding: inject molten plastic into the mold cavity 7 .
第三步:保压。The third step: keep the pressure.
第四步:(参考图3)在浇口冷却前,成型机台驱动浇口顶针向上顶出一段距离,切断浇口,此时浇口顶针板10并不带动料头顶针板8动作。Step 4: (Refer to Figure 3) Before the gate is cooled, the molding machine drives the gate ejector pin upwards for a certain distance to cut off the gate. At this time, the gate ejector plate 10 does not drive the material head ejector plate 8 to move.
第五步:(参考图4)开模:将上模6和顶板1从下模3上拆去。The fifth step: (refer to FIG. 4 ) mold opening: remove the upper mold 6 and the top plate 1 from the lower mold 3 .
第六步:(参考图5)成型机台驱动轴驱动浇口顶针板10上行,带动料头顶针板8向上运动,料头顶针14将成型的产品从模型腔7中顶出。Step 6: (refer to FIG. 5 ) The driving shaft of the molding machine drives the gate ejector plate 10 upward, and drives the material head ejector plate 8 to move upward, and the material head ejector pin 14 ejects the formed product from the mold cavity 7 .
本发明的自动切割浇口的模具通过设置相隔一定距离的浇口顶针板和料头顶针板,使得其能在产品还未冷却时切断浇口,保证了浇口切断的平整性,并且无需工人手动切断接口,效率高。The mold for automatic gate cutting of the present invention can cut off the gate when the product is not cooled by setting the gate ejector plate and material head ejector plate at a certain distance, which ensures the smoothness of the gate cutting and does not require workers. Manually cut off the interface, high efficiency.
本发明至少具有如下优点:The present invention has following advantage at least:
1.传统的塑胶模具开模后产品与浇口相连,需二道工序进行人工剪切分离,而本发明将浇口分离提前至开模前,消除后续工序,有利于生产自动化,提高生产效率;1. After the traditional plastic mold is opened, the product is connected to the gate, which requires two processes for manual shearing and separation. However, the invention advances the separation of the gate to before the mold is opened, eliminating the subsequent process, which is conducive to production automation and improves production efficiency. ;
2.在模内切模具成型过程中,浇口分离的自动化保证浇口分离处外观一致性,而传统人工分离浇口工艺无法保证浇口分离处外观一致;2. During the molding process of in-mold cutting, the automation of gate separation ensures the appearance consistency of gate separation, while the traditional manual separation gate process cannot guarantee the appearance of gate separation;
3.模内切成型的自动化,避免了生产过程中无用的人为动作,而产品的全自动化机械剪切保证品质一致性,在产品大规模生产过程中较传统的模具有着不可拟比优势;3. The automation of in-mold cutting and molding avoids useless human actions in the production process, and the fully automated mechanical shearing of products ensures the consistency of quality, which has incomparable advantages over traditional molds in the mass production process of products;
4.在浇口未冷却时切断,切割更容易,而且切口质量更佳。4. Cut off when the gate is not cooled, the cutting is easier and the quality of the cut is better.
需要指出的是,上述较佳实施例仅为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围之内。It should be pointed out that the above-mentioned preferred embodiments are only to illustrate the technical conception and characteristics of the present invention, the purpose of which is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot limit the scope of the present invention. protected range. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.
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CN113211737A (en) * | 2021-05-14 | 2021-08-06 | 诸暨市碧涵精工模塑有限公司 | Injection mold gate planing and cutting device and planing and cutting method thereof |
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CN103203844A (en) * | 2012-01-13 | 2013-07-17 | 苏州汉扬精密电子有限公司 | Mechanism for in-mould automatic cutting of sprue |
CN204196161U (en) * | 2014-09-09 | 2015-03-11 | 青岛牧野模具有限公司 | A kind of side gate coagulates material and automatically cuts off injection mold |
CN204471768U (en) * | 2015-03-10 | 2015-07-15 | 骏艺精密模具(苏州)有限公司 | A kind of injection moulding die casting mouth automatic disconnecting device |
CN205148818U (en) * | 2015-12-03 | 2016-04-13 | 陈婵娟 | Device is expected with fixed attention to automatic cutout runner of many types of chamber of some runner list die joint mould |
CN207772330U (en) * | 2017-12-05 | 2018-08-28 | 镒生电线塑料(昆山)有限公司 | A kind of mold of automatic cutting cast gate |
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