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    • 1. 发明授权
    • Injection and compression molding apparatus and molding methods therefor
    • 注射和压缩成型设备及其成型方法
    • US5354525A
    • 1994-10-11
    • US60311
    • 1993-05-11
    • Satoshi FujimotoMakoto NogawaHideaki Okubo
    • Satoshi FujimotoMakoto NogawaHideaki Okubo
    • B29C45/56B29C45/80
    • B29C45/561B29C2045/5625
    • The present invention relates to an improvement in an injection and compression molding apparatus and a method therefor which comprises the steps of supplying molten resin by injecting it into a cavity formed by molds and compressing the resin by applying pressure. In consideration of problems with respect to the occurrence of sink marks in molded products and the deterioration in precision which are caused by the escape of resin during compression and a change in the cavity distance between two molds, the present invention provides an injection and compression molding apparatus and a molding method therefor which is capable of resolving the problems and stably producing molded products with good productivity. In the present invention, a gate is closed during compression, and a supplemental amount of resin can be injected after the compression step so as to supply the desired amount of resin in the molded article. The rear side of a movable mold can be held by a mechanical fixing mechanism so that no change is produced in the distance between the molds owing to the pressure applied during injection, and resin is supplied by injection while the distance between the molds being maintained. It is thus possible to stably provide molded products with good appearance, dimensional precision and quality with good productivity.
    • 本发明涉及注射压缩成型设备及其方法的改进,其包括以下步骤:通过将熔融树脂注入由模具形成的空腔中并通过施加压力来压缩树脂来提供熔融树脂。 考虑到在压缩期间由于树脂的逸出和两个模具之间的腔距离的变化而引起的模制品中的凹痕的发生和精度的劣化的问题,本发明提供了一种注射和压塑 装置及其成型方法,其能够以良好的生产率解决问题并稳定地生产模塑产品。 在本发明中,在压缩期间关闭闸门,并且在压缩步骤之后可以注入补充量的树脂,以便在模制品中提供所需量的树脂。 可移动模具的后侧可以由机械固定机构保持,使得在注射期间由于施加的压力而在模具之间的距离不会产生变化,并且在保持模具之间的距离的同时通过注射提供树脂。 因此,可以以良好的生产率稳定地提供具有良好外观,尺寸精度和质量的模制品。
    • 2. 发明授权
    • Controlling screw speed to injection compression molding machine
    • 控制注射压缩机的螺杆转速
    • US5470513A
    • 1995-11-28
    • US142458
    • 1993-11-29
    • Makoto NogawaSatoshi Fujimoto
    • Makoto NogawaSatoshi Fujimoto
    • B29C45/56B29C45/76B29C45/70B29C45/77
    • B29C45/76B29C45/561
    • An injection compression molding machine (1) has a clamping unit (10) for positioning an upper mold (15) with respect to a lower mold (16), and an injection unit (30). When the upper mold (15) moves to a specified, slightly open position, a screw (61) of the injection unit (30) is advanced to start the injection of molten resin. When the screw advances to a specified position, the screw speed is decelerated to a specified speed. In addition, when the screw advances to a predetermined stop position, the screw is stopped and the injection rate of molten resin is simultaneously reduced and the molten resin is kept pressurized until the gate (71) is closed.
    • PCT No.PCT / JP91 / 00738 Sec。 371日期:1993年11月29日 102(e)日期1993年11月29日PCT 1991年5月31日PCT PCT。 出版物WO92 / 21504 注射压缩成型机(1)具有用于相对于下模具(16)定位上模具(15)的夹紧单元(10)和注射单元(30)。 当上模15移动到指定的稍微打开位置时,推进注射单元30的螺钉61开始注射熔融树脂。 当螺丝进入指定位置时,螺杆速度减速至指定速度。 此外,当螺杆进入预定的停止位置时,螺杆停止,并且同时降低熔融树脂的注入速率,并且使熔融树脂保持加压直到门(71)关闭。
    • 3. 发明授权
    • Method and apparatus for injection and compression molding
    • 用于注射和压缩成型的方法和装置
    • US5221509A
    • 1993-06-22
    • US499453
    • 1991-01-15
    • Satoshi FujimotoMakoto NogawaHideaki Okubo
    • Satoshi FujimotoMakoto NogawaHideaki Okubo
    • B29C45/56
    • B29C45/561B29C2045/5625
    • An injection and compression molding apparatus and a method include the steps of supplying molten resin by injecting it into a cavity formed by molds and compressing the resin by applying pressure. In consideration of problems with respect to the occurrence of sink marks in molded products and the deterioration in precision which are caused by the escape of resin during compression and a change in the cavity distance between two molds, an injection and compression molding apparatus and a molding method therefor are capable of resolving the problems and stably producing molded products with good productivity. A gate is closed during compression, and a supplemental amount of resin can be injected after the compression step so as to supply the desired amount of resin in the molded article. The rear side of a movable mold can be held by a mechanical fixing mechanism so that no change is produced in the distance between the molds owing to the pressure applied during injection, and resin is supplied by injection while the distance between the molds being maintained. It is thus possible to stably provide molded products with good appearance, dimensional precision and quality with good productivity.
    • PCT No.PCT / JP89 / 01104 Sec。 371日期1991年1月15日 102(e)日期1991年1月15日PCT提交1989年10月26日PCT公布。 出版物WO90 / 04508 日本1990年5月3日。注射压缩成型装置和方法包括以下步骤:通过将熔融树脂注射到由模具形成的空腔中并通过施加压力来压缩树脂来提供熔融树脂。 考虑到在压缩期间由于树脂的逸出和两个模具之间的腔距离的变化而引起的模制产品中的凹痕的出现和精度的劣化的问题,注射和压缩成型设备和模制 其方法能够以良好的生产率解决问题并稳定地生产模塑产品。 在压缩期间关闭门,并且在压缩步骤之后可以注入补充量的树脂,以便在模塑制品中提供所需量的树脂。 可移动模具的后侧可以由机械固定机构保持,使得在注射期间由于施加的压力而在模具之间的距离不会产生变化,并且在保持模具之间的距离的同时通过注射提供树脂。 因此,可以以良好的生产率稳定地提供具有良好外观,尺寸精度和质量的模制品。
    • 4. 发明授权
    • Apparatus for injection and compression molding
    • 注射和压缩成型设备
    • US5370518A
    • 1994-12-06
    • US10562
    • 1993-01-28
    • Yosuke SasakiMakoto NogawaHideaki OkuboSatoshi Fujimoto
    • Yosuke SasakiMakoto NogawaHideaki OkuboSatoshi Fujimoto
    • B29C43/58B29C45/56B29C45/76B29C45/80B29C45/08B29C45/64
    • B29C45/7613B29C45/561B29C45/80B29C2043/3615B29C2043/5808B29C2043/5833B29C2045/562B29C43/58
    • A horizontal injection and compression molding apparatus has an injection device (3) and a compression molding device, wherein the compression molding device (2) includes: a stationary die plate (12) for holding a stationary die (11), a movable die plate (22) for holding a movable die (21), means (30) for rapidly extending and retracting the movable die plate (22), relative to the stationary die plate (12), means (40) for locking the movable die plate (22) to tie bars (51) at a position where the movable die plate (22) approaches the stationary die plate (12), and means (50) for fastening the dies after the movable die plate (22) is locked to the tie bars (51); and wherein the injection device (3) for feeding a molten plastic material into a mold cavity (90) between the stationary die (11) and the movable die (21) is characterized in that it initiates feeding of the molten plastic material into the mold cavity ( 90) when the stationary die (11) and the movable die (21) are parted from each other by a predetermined distance, with the plastic material being compressed and drawn while the movable die (21) is moved towards the stationary die (11) after a predetermined quantity of the molten plastic material has been fed into the mold cavity (90).
    • 水平注射压缩成型装置具有注射装置(3)和压缩成形装置,其中压缩成型装置(2)包括:用于保持固定模具(11)的固定模板(12),可动模具板 (22),用于保持可动模具(21)的装置(30),用于相对于固定模板(12)快速地伸缩可动模板(22)的装置(30),用于锁定活动模板 22)将可动模板(22)接近固定模板(12)的位置处的连杆(51)连接,以及用于在可动模板(22)被锁定到系带之后紧固模具的装置(50) 酒吧(51); 并且其中用于将熔融塑料材料供给到所述固定模具(11)和所述活动模具(21)之间的模腔(90)中的注射装置(3)的特征在于,其启动将所述熔融塑料材料进料到所述模具 当固定模具(11)和可移动模具(21)彼此分开预定距离时,当可移动模具(21)朝向固定模具移动时,塑料材料被压缩和拉伸 在预定量的熔融塑料材料已经被供给到模具腔(90)中之后。
    • 8. 发明授权
    • Injection compression molding method and apparatus
    • 注射压缩成型方法和装置
    • US6143226A
    • 2000-11-07
    • US849178
    • 1997-05-28
    • Satoshi FujimotoMakoto Nogawa
    • Satoshi FujimotoMakoto Nogawa
    • B29C45/14B29C37/00B29C45/00B29C45/16B29C45/56B29C45/80B05D1/36
    • B29C45/0053B29C37/0028B29C45/1635B29C45/1679B29C45/561
    • The present invention is an injection compression molding method and apparatus therefor which are capable of using a simple structure for rapidly molding a multilayer molded product with high strength and high accuracy. A molding method for attaining such characteristics includes the steps of extending an injected molten resin (51) by compressing the same in metal molds (31, 32), opening the metal molds during or after the extending operation, injecting a surface layer material (60) into a cap (.delta.) occurring between the metal molds (31, 32) and the molded resin (51) when the molds are opened, closing the molds during or after the injecting of the surface layer material (60), and cooling the resin (51) and the surface layer material (60) in the closed metal molds (31, 32).
    • PCT No.PCT / JP95 / 02405 Sec。 371日期1997年5月28日 102(e)日期1997年5月28日PCT提交1995年11月27日PCT公布。 公开号WO96 / 16785 日期1996年6月6日本发明是一种注射压缩成型方法及其设备,其能够使用具有高强度和高精度快速成型多层模制产品的简单结构。 用于获得这种特性的成型方法包括以下步骤:通过在金属模具(31,32)中压缩注入的熔融树脂(51),在延伸操作期间或之后打开金属模具,喷射表面层材料(60 )在模具打开时在金属模具(31,32)和模制树脂(51)之间出现的盖(delta)中,在表面层材料(60)的注入期间或之后关闭模具,并且冷却 树脂(51)和密封金属模具(31,32)中的表面层材料(60)。
    • 9. 发明授权
    • Combined injection-molding and pressing machine
    • 联合注塑机和压力机
    • US5035599A
    • 1991-07-30
    • US474111
    • 1990-04-09
    • Noboru HarashimaKazuhiro MimuraYosuke SasakiHideaki OkuboMakoto NogawaSatoshi Fujimoto
    • Noboru HarashimaKazuhiro MimuraYosuke SasakiHideaki OkuboMakoto NogawaSatoshi Fujimoto
    • B29C45/03B29C45/07B29C45/17B29C45/76B29C45/82B29C45/80
    • B29C45/07B29C45/03B29C45/1773B29C45/1777B29C45/76B29C2045/073B29C45/82
    • In a combined injection-molding and pressing machine according to the present invention, an injector (10a) of horizontal injection apparatus (10) is disposed below a stationary die plate (2) of a vertical press (1), an injection nozzle (10b) of the injector (10a) is formed into an L-shaped, and the injection nozzle includes a valve (10c) for opening and closing a resin passsage. Corresponding to extension and contraction of the horizontal injection apparatus (10), a base (14) of a platform (4) mounting thereon the horizontal injection apparatus (10) is allowed to slide about the injection nozzle (10), and the L-shaped injection nozzle (10b) is caused to contact with a lower mold (3) at a predetermined surface pressure. Therefore, color changing and purging of resin is more efficient and complete. No need of a hot runner permits to employ an inexpensive and versatile mold that is more widely used in common. Since resin is surely loaded through the short resin passage, molding with stable quality can be produced. Even when the horizontal injection apparatus (10) extends and contracts, the lower mold (3) remains immobile and no resin is leaked. Further, the injector (10a) can be moved outwardly away from a position below the stationary die plate (2), which facilitates replacement and/or inspection of the injection nozzle (10b), a screw and so forth.
    • PCT No.PCT / JP89 / 00860 Sec。 371日期1990年04月9日 102(e)1990年4月9日PCT PCT 1989年8月23日PCT公布。 出版物WO90 / 02032 PCT 日本1990年3月8日。在根据本发明的联合注射成型和压制机中,水平注射装置(10)的注射器(10a)设置在垂直压力机(1)的固定模板(2)的下方 ),喷射器(10a)的喷嘴(10b)形成为L形,并且喷嘴包括用于打开和关闭树脂传递的阀(10c)。 对应于水平注射装置(10)的延伸和收缩,允许在其上安装水平注射装置(10)的平台(4)的底座(14)围绕喷嘴(10)滑动, 使形状的喷嘴(10b)以预定的表面压力与下模(3)接触。 因此,树脂的颜色变化和清洗效率更高,更完整。 不需要热流道允许使用更普遍使用的便宜且通用的模具。 由于通过短的树脂通道可靠地装载树脂,因此可以产生质量稳定的成型。 即使当水平注射装置(10)延伸和收缩时,下模具(3)保持不动,也没有树脂泄漏。 此外,喷射器(10a)可以从固定模板(2)下方的位置向外移动,这有助于喷嘴(10b)的更换和/或检查,螺钉等。