CN104552762B - 具有变压器的注塑成型机的电源供给方法 - Google Patents

具有变压器的注塑成型机的电源供给方法 Download PDF

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CN104552762B
CN104552762B CN201410543474.0A CN201410543474A CN104552762B CN 104552762 B CN104552762 B CN 104552762B CN 201410543474 A CN201410543474 A CN 201410543474A CN 104552762 B CN104552762 B CN 104552762B
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servo amplifier
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小山秀树
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B24/00Open-loop automatic control systems not otherwise provided for
    • G05B24/02Open-loop automatic control systems not otherwise provided for electric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/7666Measuring, controlling or regulating of power or energy, e.g. integral function of force
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/84Safety devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/10Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/10Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
    • H02M5/12Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C2045/1784Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
    • B29C2045/1792Machine parts driven by an electric motor, e.g. electric servomotor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76003Measured parameter
    • B29C2945/76033Electric current or voltage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76177Location of measurement
    • B29C2945/7618Injection unit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76177Location of measurement
    • B29C2945/76224Closure or clamping unit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76177Location of measurement
    • B29C2945/7624Ejection unit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76451Measurement means
    • B29C2945/76454Electrical, e.g. thermocouples
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76518Energy, power
    • B29C2945/76521Energy, power power
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76525Electric current or voltage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76929Controlling method
    • B29C2945/76939Using stored or historical data sets
    • B29C2945/76943Using stored or historical data sets compare with thresholds

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  • Automation & Control Theory (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

本发明提供一种具有变压器的注塑成型机的电源供给方法。注塑成型机具有:以第1电压进行动作的第1伺服放大器、以第2电压进行动作的第2伺服放大器、以及具有1次侧端子和2次侧端子,以预定的电压比将电压相互地进行变压的变压器。根据向注塑成型机供给的主电源的电压是与第1电压相等还是与第2电压相等,将该主电源与变压器的1次侧端子或2次侧端子连接。在没有连接主电源一侧的变压器的端子上连接第1或者第2伺服放大器。

Description

具有变压器的注塑成型机的电源供给方法
技术领域
本发明涉及一种注塑成型机的电源供给方法,该注塑成型机具有容许电压不同的多个种类的伺服放大器和对多个种类的电压进行变压的变压器。
背景技术
在注塑成型机中,对每个驱动部设有独立的伺服电动机(即,注塑用、测量用(螺杆旋转用)、模具开合用、顶杆用的伺服电动机)。根据应用的驱动部,这些伺服电动机所需要的输出不同,尤其是对于向模具内注塑树脂的注塑用伺服电动机,与其他的伺服电动机相比采用高输出的电动机。
为了使伺服电动机高输出化,具有增加驱动伺服电动机的伺服放大器的电流或者电压的方法,但增加电流的方法存在基于伺服放大器内的功率元件的最大电流的输出极限。因此,在想要进一步增加输出的情况下,除了增加向伺服放大器供给的电流以外还需要提高电压,此时一般应用输入电压400V的伺服放大器作为应对高电压的伺服放大器,来取代普通的输入电压200V的伺服放大器。
如上所述,虽然应对400V的伺服放大器能够获得高输出,但是当使用这样的伺服放大器时电压升高,所以需要增强伺服放大器内的电气部件的耐压性能。并且,为了增强耐压性能需要将电缆或配线等导体间的距离加宽,结果,伺服放大器的尺寸变大。因此,当使1台注塑成型机中使用的每个驱动部的伺服电动机(即,注塑用、测量用、模具开合用、顶杆用的伺服电动机)全部为应对400V的伺服放大器时,在容纳注塑成型机的控制部的空间中,这些伺服放大器所占的比例变大,有可能无法在注塑成型机内容纳全部的伺服放大器。
因此,为了在注塑成型机内容纳全部的伺服放大器,优选只对需要应对400V的伺服放大器的驱动部应用400V的伺服放大器,对不需要这样高输出的模具开合用伺服电动机和顶杆用伺服电动机应用相同输出的尺寸比应对400V的伺服放大器小的应对200V的伺服放大器。
在图2中表示包含应对200V的伺服放大器和应对400V的伺服放大器的注塑成型机。
注塑成型机1在其内部,对每个驱动部具备伺服电动机(注塑用伺服电动机22、螺杆旋转用伺服电动机24、模具开合用伺服电动机26、顶杆用伺服电动机28),并且,对各个伺服电动机中的每个伺服电动机独立地具有伺服放大器(注塑用伺服放大器12、螺杆旋转用伺服放大器14、模具开合用伺服放大器16、顶杆用伺服放大器18)。另外,在注塑成型机1的内部,具备从200V(设备电源的电压)变压为400V的变压器30,其将作为主电源2输入的200V电压升压为400V,用于应对400V的伺服放大器。
另外,在日本特开2007-168177号公报中记载的注塑成型机在将200V用伺服放大器和400V用伺服放大器混合使用这一点上与图2的注塑成型机相同,但由于输入电压为400V,设置有用于200V用伺服放大器的变压器。
如注塑成型机那样的生产设备有时根据工厂的生产情况在工厂之间进行移设。这时,由于工厂的设备电源的电压在每个区域或者工厂中不同,因此在注塑成型机只能应对200V或者400V中的某一个电压的情况下,需要在工厂的设备电源和注塑成型机之间添加变压器,需要按照设备电源的电压来升压或降压来向注塑成型机供电。在无法向注塑成型机供给合适的电压的情况下,注塑成型机处于无法运转的状态。
图3是在注塑成型机的外部追加了变压器35的例子。
设备电源的电压为400V,注塑成型机1的主电源的电压为200V,因此在注塑成型机1的外部追加了从400V变压为200V的变压器35。这样,通过在注塑成型机1的外部追加变压器35,即使在工厂的设备电源的电压变化的情况下,也能够供给与注塑成型机的主电源所要求的电压对应的电压,注塑成型机能够运转。然而,追加变压器存在费用方面的问题和变压器设置场所等问题,尤其是越是大型的注塑成型机,变压器容量越大,用户的负担增大。
发明内容
因此,本发明的目的在于,提供一种注塑成型机的电源供给方法,即使在设备电源不同的位置之间移设注塑成型机的情况下,也能够通过简单的步骤来应对设备电源的电压的差别。
在本发明的注塑成型机的电源供给方法中,该注塑成型机具有:以第1容许电压进行动作的第1伺服放大器;以与第1容许电压不同的第2容许电压进行动作的第2伺服放大器;以及具有1次侧端子和2次侧端子,以预定的电压比对电压相互进行变压的变压器。并且,所述电源供给方法包含:在向所述注塑成型机供给的主电源的电压与所述第1容许电压相等的情况下,将所述变压器的1次侧端子与所述主电源连接,并且所述第1伺服放大器与所述主电源直接连接,另一方面,通过所述第2伺服放大器与所述变压器的2次侧端子连接,由所述变压器将所述主电源的电压以所述预定的电压比进行变压后供给;以及在向所述注塑成型机供给的主电源的电压与所述第2容许电压相等的情况下,将所述变压器的2次侧端子与所述主电源连接,并且通过所述第1伺服放大器与所述变压器的1次侧端子连接,由所述变压器将所述主电源的电压以所述预定的电压比的倒数进行变压后供给,另一方面,所述第2伺服放大器与所述主电源直接连接。
根据本发明的电源供给方法,即使在设备电源不同的工厂之间移设注塑成型机的情况下,也能够用简单的改造来应对设备电源的电压的差别。
可以检测向所述第1伺服放大器供给的电压和向所述第2伺服放大器供给的电压,当检测到的向所述第1伺服放大器供给的电压偏离所述第1容许电压时以及/或者检测到的向所述第2伺服放大器供给的电压偏离所述第2容许电压时发出警告。
根据上述的实施方式,检测向第1伺服放大器供给的电压和向第2伺服放大器供给的电压,当某一个电压偏离各自的容许电压时发出警告,因此能够根据经由变压器与主电源连接的伺服放大器中检测出的电压偏离了容许电压,还是不经由电压器与主电源连接的伺服放大器中检测出的电压偏离了容许电压来判断是变压器的异常还是主电源电压的异常。
可以检测向所述第1伺服放大器供给的电压和向所述第2伺服放大器供给的电压,当检测到的向所述第1伺服放大器供给的电压和检测到的向所述第2伺服放大器供给的电压的比偏离了预定的电压比时发出警告。
根据上述实施方式,检测向第1伺服放大器供给的电压和向第2伺服放大器供给的电压,求出二者电压的比,当该比偏离了预定的电压比时发出警告,因此能够根据二者的电压比来检测变压器的异常。
根据本发明,即使在设备电源不同的位置之间移设注塑成型机的情况下,也能够通过简单的步骤来应对设备电源的电压的差别。
附图说明
通过参照附图对以下的实施例进行说明,本发明的上述以及其他的目的和特征更加清楚,在各图中,
图1A是说明向注塑成型机供给的主电源的电压为200V时,本发明的注塑成型机的电源供给方法的一实施方式的图。
图1B是说明向注塑成型机供给的主电源的电压为400V时,本发明的注塑成型机的电源供给方法的一个实施方式的图。
图2是设备电源(主电源)为200V,包含应对200V的伺服放大器和应对400V的伺服放大器的现有的注塑成型机的结构图。
图3是说明为了将图2的注塑成型机在设备电源的电压为400V的地方使用,在注塑成型机的外部追加了从400V变压为200V的变压器的图。
具体实施方式
首先,使用图1A对向注塑成型机供给的主电源的电压为200V时,该注塑成型机的电源供给方法的一个实施方式进行说明。
图1A的向注塑成型机1供给的主电源2的电压为200V,因此将变压器30的1次侧端子32连接在主电源2侧,将2次侧端子34连接在容许电压为400V的伺服放大器、即注塑用伺服放大器12侧。除此之外,容许电压为200V的伺服放大器(螺杆旋转用伺服放大器14、模具开合用伺服放大器16、顶杆用伺服放大器18)直接连接在主电源2上。
然后,使用图1B对向注塑成型机供给的主电源的电压为400V时,该注塑成型机的电源供给方法的一个实施方式进行说明。
图1B的向注塑成型机1供给的主电源2的电压为400V,因此将变压器30的2次侧端子34连接在主电源2侧,将1次侧端子32连接在容许电压为200V的伺服放大器(螺杆旋转用伺服放大器14、模具开合用伺服放大器16、顶杆用伺服放大器18)侧。除此之外,容许电压为400V的伺服放大器,即注塑用伺服放大器12直接连接在主电源2上。也就是说,在图1B的注塑成型机1的情况下,该变压器30的1次侧端子32与放大器连接,2次侧端子34与主电源连接,而在图1A的注塑成型机1的情况下,与图1B的注塑成型机的情况相反,该变压器30的1次侧端子32与主电源连接,2次侧端子34与放大器连接。
由此,注塑成型机1即使在设备电源不同的地域之间移设注塑成型机1的情况下,能够通过将设在注塑成型机1内的变压器30的1次侧端子32和2次侧端子34交替使用这种程度的简单的改造来应对设备电源的电压的差别。另外,由于不需要像图3所示那样在设备电源和主电源之间另外追加变压器,所以变压器的费用以及设置场所的负担减轻。
另外,如图1A以及图1B所示,还可以在各个伺服放大器的紧前设置第1、第2电压检测单元42、44,用于检测对伺服放大器的供给电压。此时,在第1电压检测单元42检测到偏离了注塑用伺服放大器12的容许电压400V左右时,或者在第2电压检测单元44检测到偏离了其他的伺服放大器的容许电压200V左右时,通过警告单元40进行警告。作为警告单元40的警告,能够使用点亮灯光或闪烁、蜂鸣器等声音的警告、振动的警告等各种警告方法。
这时,能够根据第1电压检测单元42的检测电压偏离了容许电压还是第2电压检测单元44的检测电压偏离了容许电压,判别异常的种类。例如,在图1A的注塑成型机的情况下,在只有第1电压检测单元42的检测电压偏离了容许电压时可以判别为变压器30的异常。另外,当第1电压检测单元42的检测电压偏离了容许电压,并且第2电压检测单元44的检测电压也偏离了容许电压的情况下,可以判别为主电源2的电压的异常。另外,也可以按照该判别结果,使警告单元40的警告的种类不同。
另外,也可以求出第1电压检测单元42检测出的电压和第2电压检测单元44检测出的电压的比,当该比偏离了预定的电压比时,判断为变压器30的异常,通过警告单元40进行警告,从而取代判别第1电压检测单元42、第2电压检测单元44检测到的各个电压是否分别偏离容许电压。预定的电压比可以根据变压器的特性求出。
为了尽量降低注塑成型机1中内置的变压器30的价格,需要减小变压器30的容量。为此,优选组合伺服放大器,以使容许电压为400V的伺服放大器消费的电力和容许电压为200V的伺服放大器消费的电力相同。例如,在供给400V的电路中,只连接需要高输出的注塑用伺服放大器12,使电力消耗不会增加到注塑动作消费的电力以上,另一方面,在供给200V的电路中,连接不需要高输出的注塑用伺服放大器以外的伺服放大器,由此电力消耗不会集中在一边的电压电路中,抑制变压器30的容量。由此,与如图3那样在注塑成型机1的外部设置变压器的情况相比,在变压器的价格及设置场所的方面更有利。

Claims (3)

1.一种注塑成型机的电源供给方法,其特征在于,
该注塑成型机具有:以第1容许电压进行动作的第1伺服放大器;以与第1容许电压不同的第2容许电压进行动作的第2伺服放大器;以及具有1次侧端子和2次侧端子,以所述第1容许电压与所述第2容许电压的电压比对电压相互进行变压的变压器,
所述电源供给方法包含:
在向所述注塑成型机供给的主电源的电压与所述第1容许电压相等的情况下,将所述变压器的1次侧端子与所述主电源连接,并且所述第1伺服放大器与所述主电源直接连接,另一方面,所述第2伺服放大器与所述变压器的2次侧端子连接,由此通过所述变压器将所述主电源的电压以所述电压比进行变压后供给;以及,
在向所述注塑成型机供给的主电源的电压与所述第2容许电压相等的情况下,将所述变压器的2次侧端子与所述主电源连接,并且所述第1伺服放大器与所述变压器的1次侧端子连接,由此通过所述变压器将所述主电源的电压以所述电压比的倒数进行变压后供给,另一方面,所述第2伺服放大器与所述主电源直接连接。
2.根据权利要求1所述的注塑成型机的电源供给方法,其特征在于,
检测向所述第1伺服放大器供给的电压和向所述第2伺服放大器供给的电压,当检测到的向所述第1伺服放大器供给的电压偏离了所述第1容许电压时以及/或者检测到的向所述第2伺服放大器供给的电压偏离了所述第2容许电压时发出警告。
3.根据权利要求1所述的注塑成型机的电源供给方法,其特征在于,
检测向所述第1伺服放大器供给的电压和向所述第2伺服放大器供给的电压,当检测到的向所述第1伺服放大器供给的电压和检测到的向所述第2伺服放大器供给的电压的比偏离了所述电压比时发出警告。
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