Sumitomo Chemical Company, Limited

Horiba, Ltd.

Sumitomo Metal Industries, Inc.

Yoshiaki Togawa

Masahito Matsumoto

Tatsuo Igushi

Tomoo Hirota

Takuji Kurozumi

Toshitsugu Kikuchi

Shinichi Nagaoka

Takeo Kitayama

Makoto Nagata

Masaaki Tsutsubuchi

Toru Yabe

Yukito Nakamura

Shuji Kitamura

Hideyuki Ikeda

Hiroyuki Kitamura

Tohru Yabe

Nobuhiro Usui

Tadayuki Ohmae

Kozo Kotani

Seimei Yasui

Juichiro Ukon

Kiyohiko Nakae

Shigeyoshi Matubara

Kiyoshi Mitsui

Mitsuyuki Okada

Nobuo Fukushima

Yoshio Tadokoro

Shohei Masui

Takuzo Okumura

Minoru Nishihara

Takeshi Shimizu

Makoto Nagura

Toshiaki Shiota

Hiroyuki Nagai

Kanemitsu Oishi

Yuki Ishii

Seiichi Shibata

Yukio Sakai

Koichiro Matsuda

Hiroo Toya

Tsutomu Fujita

Toshiya Ito

This invention may measure the sprayed particle sprayed from the nozzle safely with the use of a conventional particle size distribution measuring device The particle size distribution measuring device may measure particle size distribution of a particle group, and may include a device body comprising a light source that irradiates light on the particle group and a light detector that detects intensity of diffracted light or/and scattered light generated by irradiation of the light, a spray measuring system that introduces a sprayed particle group as being the particle group sprayed from a nozzle into a measuring area between the light source and the light detector, and an ordinary measuring system that arranges a measuring cell that accommodates an ordinary particle group as being a particle group other than the sprayed particle group between the light source and the light detector are arranged to be exchangeable for each other.

Particle size distribution measuring device

The object of the present invention is to realize an optimum resin product design even in the event of conducting injection molding of an arbitrary shape resin product, taking into account of the mold clamping force required for molding and the capacity of an available injection molding device. When a resin product to be molded by injection molding is designed, the mold clamping force required for injection molding of the resin product having a specified shape is determined using a computer-aided optimization method and then the design of the resin product is determined based on the thus obtained mold clamping force.

Method for designing a resin product, method for producing a resin product and injection molding device

In a measurement system, by suppressing the environmental changes of counter-flow of air, and temperature changes and the like, measurement can be accomplished with stable high precision and replication, and by providing a transparent cellwhich stores a particles dispersed in a dispersion medium, and a light source which irradiates light onto the particles within the transparent cell, and multiple light detectorsscattered and arranged to detect the intensity of diffracted/scattered light produced by the irradiation of light, and a computer devicewhich calculates the particle size distribution of the particles based on the light intensity signal output from the light detectors, in addition to the establishment of cell storage space S which stores the transparent celland the equipment storage spaces Sand Swhich store the light source, the light detector, and the optical device, the equipment storage spaces Sand Sare given tight closed construction separate from the cell storage space S.

Particle size distribution analyzer

An object of the present invention is to achieve favorable injection molding with reduced mold clamping force required for molding and with suppression of weld line occurrence without repeating trial and error manually, by prompt calculation of adequate production parameters, when conducting injection molding of resin products. When the injection molding is conducted using a mold having a plurality of resin inflow conduits N, R, G, G, and Gto the cavity CV, the combination of a numerical analysis method for calculating the injection molding process and a computer-aided optimization method, derives the production parameters which determine time-sequentially the inflow of resin material through resin inflow conduits.

Method for determining a production parameter of an injection molding, method for producing an injection molding, injection molding device and program

An object of the present invention is to provide a method for designing a mold and a method for producing an injection molding in which a mold clamping force or weld line occurrence can be more accurately controlled in the case of injection molding of a resin product. In the case where an injection molding is carried out using a mold having a plurality of resin inflow conduits G, G, Gto a cavity CV, a mold design parameter in relation to at least one of the arrangement, the shapes and the sizes of the resin inflow conduits is determined by the combination of a numerical analysis method for calculating an injection molding process and a computer-aided optimization method, for the purpose of obtaining a preferable injection molding condition. Thereby the mold design parameter can be promptly and accurately calculated without repetition of trial and error manually.

Method for designing a mold, method for producing an injection molding, program and injection molding device

An object of the invention is to provide an impact energy absorbing structure in the form of resin moldings such as interior components of automobiles and other impact energy absorbing structures, with better impact properties, particularly the performance in absorbing impact energy to passenger heads. The invention relates to an impact energy absorbing structure for absorbing the kinetic energy of a colliding object by means of its own deformation, wherein when a certain colliding object collides with the impact energy absorbing structure at a certain velocity, the relationship between dimensionless displacement D, where the deformation of the impact energy absorbing structure is normalized by the permissible deformation, and the dimensionless energy E, where the kinetic energy absorbed by the impact energy absorbing structure is normalized by the kinetic energy of the colliding object prior to collision, meets E&#x3e;D.

Impact energy absorbing structure

An data processing systemincludes: an integral partwhich integrates, by two mutually different times, light intensities indicating light intensity signals outputted from light detectorsrespectively provided for detecting intensities of scattered light and transmitted light generated by irradiating a sample powder S with light and then outputs each of the integrated values; an actuator control partwhich generates and outputs a control signal for a vibration actuatorwhich drops the sample powder S stored in a sample housing so that one of the integrated values of light intensity outputted from the integral partbecomes closer to a set value previously defined; and a particle size distribution calculation partwhich calculates the particle size distribution of the sample powder S based on another of the integrated values of light intensity outputted from the integral part

In order to supply a dispersion medium to a circulation channel not accompanying any mingling of air and to accomplish the reduction of preparation time and the improvement of the measurement accuracy; a dispersion medium supply systemis connected in the vicinity of a drainage outletof a circulation channelcomprising a suspension circulation systemto pressure-pour a dispersionfrom the dispersion medium supply systemto the circulation channel

Particle size distribution measurement device

The present invention provides a particle diameter distribution measuring method, a particle diameter distribution measuring device, and a measuring program which decreases the dependence of the calculation of particle diameter distribution on sample concentration, and can measure with higher precision by setting a concentration correction unique to a specific measuring sample in a particle diameter distribution measuring device. The measuring sample is measured by changing its concentration. Concentration correction constants for correcting detection values of detectors according to the concentration of the sample are found. The detection values of the respective detectors are corrected by using the concentration correction constants, and the particle diameter distribution is measured by using the corrected detection values of the respective detectors.

Particle size distribution measuring method, device, and program for compensating for particle concentration

A particle size distribution measuring apparatus which can enhance the precision and the reliability of measurements by eliminating the region of the particle size having inferior measuring precision and resolution is disclosed. In one embodiment, the particle size distribution measuring apparatus has a cell for receiving particles, a light source section for irradiating laser lights with a plurality of wavelengths to the cell, a detector for measuring the intensity of a direct light passing through the cell and the scattered lights at a plurality of scattering angles, and an arithmetic processing section which determines the particle size distribution by using the laser light of one wavelengths for the region of the particle size having low sensitivity at another wavelength in the whole range of the particle size to be measured to compensate the sensitivity of the region.

Particle size distribution measuring apparatus

Light scattering particle size distribution measuring apparatus and method of use

A particle size distribution measuring apparatus includes a source of laser light for providing a laser beam to a sample cell that can hold a sample to be measured. A condenser lens converges the laser beam towards the sample cell along an optical axis. The position on the other side of the sample cell is a ring detector unit that can be aligned with the optical axis to measure light intensity at relatively small scattering angles from contact with particles in the sample cell. An array of detectors can be operatively positioned on a substrate with appropriate amplifying multiplying and analog to digital conversion capacity for measuring light intensity at relatively large scatter angles. The outputs of the ring detector unit and the array of detectors can be used to determine the particle size distribution of particles in the sample.

A particle distribution size measuring apparatus incorporates a detector array having a plurality of light detecting elements located on a substrate. A first group of detector elements have a plurality of sectors with a common sector angle, while at least one other detector element is positioned furthest from an optical axis and has a smaller sector angle. Each of the detector elements can be formed on a single substrate and their position and alignment have increased the efficiency of manufacturing the arrays.

Particle size distribution measuring apparatus, including an array detector and method of manufacturing the array detector

A bumper reinforcing structural unit that can be manufactured at low cost, and provides superior impact resistance in a light weight body. The bumper reinforcing structural unit made of a polymeric resin includes a frame body portion having an upper plate, a lower plate and two end plates for forming an interior space therein. Transverse partition plates divide the interior space of the frame body portion along a longitudinal direction into a central space and two end spaces. A front plate covers the front of the central space, and two back plates cover the back of the end spaces.

Bumper reinforcing structural unit

An impact energy absorptive structures is made of usual plastic materials suitable for molding processing, and is designed to suit different degrees of impact loading anticipated in various applications. The impact energy absorptive structures is composed of a base member 11 and protruding rib members including long and short members, in which the proportion of the cross sectional area of the long rib members is between 0.3 to 0.8 of the total cross sectional area of the rib members. Other design modifications can be made readily to customize the impact resistance of the impact energy absorptive structures.

Impact energy absorptive structures

Growing community of inventors

Kyoto, Japan

Yoshiaki Togawa