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injection molding machine

A technology of injection molding machine and toggle mechanism, applied in the field of injection molding machines, can solve the problems of inability to change the discharge force and discharge speed, etc.

Active Publication Date: 2016-04-27
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Conventionally, when the drive source of the ejector was set constant, it was not possible to change discharge characteristics such as discharge force and discharge speed.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ］

[0056] figure 1 It is a figure which shows the outline|summary of the injection molding machine of 1st Embodiment of this invention. figure 1 Indicates the state when the mold is closed.

[0057] figure 1 The injection molding machine 10 shown in is a horizontal type in which the mold clamping direction is horizontal. The injection molding machine 10 includes a frame 11 , a fixed platen 12 fixed to the frame 11 , and a toggle support 15 movably arranged with respect to the frame 11 at a predetermined distance from the fixed platen 12 . A plurality of (for example four) connecting rods 16 are erected between the fixed platen 12 and the toggle support member 15 .

[0058] The injection molding machine 10 further includes a movable platen 13 that is arranged to face the fixed platen 12 and is arranged so as to be able to move forward and backward (movable in the left-right direction in the figure) along the connecting rod 16 . A movable mold 33 is installed on the surface opp...

no. 2 Embodiment approach ］

[0090] In the first embodiment described above, the EJ lever is fixed to the slide base. In this embodiment, however, the EJ lever is fixed to the middle plate, and the middle plate is fixed to the slide base via the connecting rod. The discharge member is composed of an EJ rod, an intermediate plate, and a connecting rod.

[0091] Figure 4 It is a figure which shows the state at the start of ejection of the ejector device of 2nd Embodiment. Figure 5 It is a figure which shows the state at the end of ejection by the ejector apparatus of 2nd Embodiment. Figure 6 is along Figure 4 The cross-sectional view of the VI-VI line. Hereinafter, "EJ" is the abbreviation of "ejection", for example, "EJ motor" means "ejection motor".

[0092] The ejector device 150 is a device for ejecting molded products from the movable mold 33 and is provided on the movable platen 113 . The ejector device 150 includes an EJ toggle support 151, an EJ movable platen 152 as a slide base, an EJ to...

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PUM

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Abstract

An injection molding machine including an ejector unit (50, 150) configured to eject a molding product from a mold, wherein the ejector unit includes a slide base (52, 152) freely movable relative to a toggle support (51, 151) disposed at a platen supporting the mold, a toggle mechanism (60, 160) configured to connect the toggle support and the slide base, disposed between the toggle support and the slide base, a driving source (66, 166) configured to operate the toggle mechanism in such a way that a distance between the toggle support and the slide base is changed, and an ejection member (68, 168, 170) movable in conjunction with the slide base.

Description

technical field [0001] The present invention relates to injection molding machines. Background technique [0002] The injection molding machine fills the cavity space of the mold device with molten resin and solidifies it to manufacture a molded product. The mold device is composed of a fixed mold and a movable mold, and a cavity space is formed between the fixed mold and the movable mold when the mold is closed. The molded product molded in the cavity space is discharged from the movable mold after the mold is opened. For this ejection, an ejector is used (for example, refer to Patent Document 1). The molded product discharged from the movable mold is taken out from the injection molding machine by the molded product take-out machine. [0003] Patent Document 1: International Publication No. 2005 / 068155 Pamphlet [0004] Conventionally, when the setting of the drive source of the ejector device was constant, it was not possible to change discharge characteristics such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/40
CPCB29C45/4005B29C45/7626B29C2045/764B29C2945/76013B29C2945/7602B29C2945/76076B29C2945/76096B29C2945/7624B29C2945/76418B29C2945/76896B29C2945/76943
Inventor 竹内滋早川真博伊藤阳介小林彰久
Owner SUMITOMO HEAVY IND LTD