Waveform monitoring device and method for monitoring waveform

A monitoring device and waveform technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of not showing the reference waveform, not knowing the difference and change of unqualified parts and unqualified degrees, and reduce the burden Effect

Inactive Publication Date: 2004-08-04
YAZAKI CORP
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Problems solved by technology

[0007] However, in the waveform monitoring device of the prior art described in JP-UM-A-7-205244, the reference waveform is not shown when the failure is judged, so it is not clear whether the defective part, the degree of failure, and the relationship with the acceptable condition difference and change

Method used

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  • Waveform monitoring device and method for monitoring waveform
  • Waveform monitoring device and method for monitoring waveform
  • Waveform monitoring device and method for monitoring waveform

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Embodiment Construction

[0044] Embodiments of the simple waveform monitoring device according to the present invention will be described in detail with reference to accompanying drawings 1-3.

[0045] As shown in FIG. 1 , a simple waveform monitoring device 10 according to an embodiment of the present invention is combined with an injection molding tool 20 including a mold 21 , screws 22 , and a hydraulic cylinder 23 , and a classifier 24 . The simple waveform monitoring device 10 generally includes a pressure sensor 12 , a determination unit 11 and a storage portion 15 , wherein the determination unit 11 includes a processing portion 13 and a display 14 .

[0046] In the injection molding process, after the material (molding material) 30 is filled in the hydraulic cylinder (heating cylinder) 23, the injection molding tool 20 is pushed towards the screw head (not shown) and the ring valve (not shown) via the rotation of the screw 22 shown), the screw 22 engages with the screw head.

[0047] Next, th...

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PUM

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Abstract

A waveform monitoring apparatus includes a hydraulic cylinder which is incorporated in an injection molding device and ejects a molding material, a sensor which generates pressure data of the hydraulic cylinder, a determinant which forms a measured value waveform based on the pressure data and determines whether the pressure data exceeds a reference pressure waveform by a predetermined range, a marking applier which applies a marking to an excess portion of the measured value waveform determined by the determinant.

Description

technical field [0001] The invention relates to a waveform monitoring device, which is combined with an injection molding tool to determine whether a molded product is qualified or not according to the pressure data of a hydraulic cylinder. The invention also relates to a method for monitoring the waveform. Background technique [0002] In the existing waveform monitoring device combined with injection molding equipment to determine the pass and fail of molded products, processing data during injection molding such as injection speed, injection pressure, and screw position The set value is changed in a single-shot and can be taken out as a single analog waveform in a single-shot of each data item. Analog waveforms will vary greatly unless abnormalities occur. [0003] Therefore, pass and fail are determined by providing an analog waveform corresponding to a qualified product in accordance with the tolerance range between the upper and lower limits for setting the analog upp...

Claims

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Application Information

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IPC IPC(8): B29C45/76B29C45/77
CPCB29C2945/76006B29C45/77B29C2945/76943B29C2945/76187B29C2045/5032B29C45/768B29C49/78
Inventor 秋山芳行中岛敏美松本吉昭山田忠幸棚桥永好
Owner YAZAKI CORP
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