摘要:
This internal gear pump has: a pump housing formed with a rotor receiving cavity which has a cylindrical circumferential inner wall surface; an outer rotor formed with a generally cylindrical outer surface which fits closely and coaxially in the cylindrical circumferential inner wall surface of the rotor receiving cavity and is rotatable around their mutual central axis within the pump housing, and which is further formed with an inner cavity the defining surface of which is formed with a plurality of internally facing teeth; and an inner rotor, somewhat smaller than the inner cavity of the outer rotor, which is formed with a plurality of externally facing teeth which mesh and cooperate with the internally facing teeth of the outer rotor. A pumping chamber is defined between the outer surface of the inner rotor and the inner surface of the outer rotor between the mutually meshing teeth thereof. An aperture is formed in the pump housing to define an intake plenum, and this aperture opens to define an intake port structure through several portions of the circumferential inner wall surface of the rotor receiving cavity, at least one remaining portion of the circumferential inner wall surface of the rotor receiving cavity intervening between separate such several portions of the circumferential wall surface of the rotor receiving cavity which are removed to allow the intake port structure to open therethrough.
摘要:
An automatic die exchanging device for injection molding machine, capable of automatically exchanging split dies on the machine. A mold exchanging base having at least two transfer passages is disposed at a lateral side of the molding machine. A split die composed of two die half parts locked to each other is placed on one of the transfer passages, and the base is moved to bring the vacant transfer passage to a lateral side of the die mounting portion of the molding machine. The die half parts of the die on the injection molding machine are unclamped from the platens and are locked to each other. This die is then transferred by a transfer means from the molding machine to the vacant transfer passage. Then, the base is moved to bring the transfer passage carrying the new die to the lateral side of the die mounting portion to transfer the new die to the molding machine. The die half parts of this new die are clamped to the platens and are unlocked from each other. It is thus possible to perform all of the operations for the die exchange automatically. Since the replacement of the dies on the die exchanging base can be made during the molding operation, the time required for the die exchange is shortened to improve the rate of operation.
摘要:
[Objection of the invention]An ion beam generator, a thermal distortion in a grid assembly is reduced. [Structure to solve the objection]Thermal expansion coefficients αP, αM and αG, for a sidewall (1A) of a discharge chamber, mounting platform (40) and extraction grid electrode assembly (20) are selected to have a relation: αP>αM≧αG. For example, the material of discharge chamber sidewall is stainless steel o aluminum, the material of grids is Mo, W or C and the material of platform is Ti or Mo.
摘要:
A power supply apparatus includes a power supply mechanism which supplies, from an external power supply, electric power to be supplied to an electrostatic chuck. The power supply mechanism includes a first conductive annular member fixed to the end portion of a strut, and capable of rotating together with the strut, a second conductive annular member fixed to a housing, and brought into surface contact with the first conductive annular member, and a first power supply member which supplies a supplied first voltage to an electrode of the electrostatic chuck via the second conductive annular member and the first conductive annular member.
摘要:
The present invention provides a bushing (10) having a glass outlet portion (18) in which two nozzle holes (12) of substantially flat shape are arranged, and permitting molten glass to be drawn out of the nozzle holes (12), and the bushing is provided with a concomitant flow guide (20) for guiding a concomitant flow made with drawing of the molten glass out of the nozzle holes (12), to between the nozzle holes (12).
摘要:
A rotary disc made of synthetic resin has a fixed portion fixed to a rotary shaft, a cylindrical portion extending in the thrust direction from the outer peripheral edge of the fixed portion, and a disc main body portion extending in the radial direction from the lower portion of the cylindrical portion, and a scale portion for detecting the rotation angle is disposed on the underside of the disc main body portion. Among the coefficient of thermal expansion α1 of the rotary disc, the coefficient of thermal expansion α2 of the rotary shaft, the temperature characteristic factor β of a sensor head, the distance H between a mounting reference surface and the light condensing point of the sensor head in the thrust direction, the distance L from the fixed point of the rotary shaft and a bearing to the fixed point of the rotary shaft and the rotary disc in the thrust direction, the distance S between the fixed point and the scale portion for rotation angle detection in the thrust direction, and the amount of change ΔT of temperature, a relational expression β×H×ΔT=(α2×L+α1×S)×ΔT and a relational expression L=H+S are established to thereby construct a rotation angle detecting apparatus which is hardly affected by any temperature change.
摘要:
A nonwoven fabric is constructed of a highly flat glass fiber which is a glass fiber whose section is flat and has a flatness ratio of 2.0 to 10 and which has such a section that the packing fraction is at least 85%, preferably at least 90%. In this nonwoven fabric, the glass fiber section has a shape near rectangle, and hence, the glass fibers can be arranged very densely to form a thin nonwoven fabric having a high bulk density, and when it is used as a laminate material, the glass fiber content can be increased and the surface smoothness can simultaneously be enhanced and can be used appropriately as a reinforcing material for a printed wiring board. Moreover, the above flat glass fiber can be produced by use of, for example, a nozzle having such a shape that one side of the major axis walls of a nozzle chip having a flat nozzle hole is partly notched.
摘要:
A printing apparatus and an ink-discharge status detection method which perform appropriate print control by detecting discharge failure with a simple construction, without reducing the printing speed. The apparatus, to which the method is applied, performs test ink discharge from a part of nozzles of a printhead while scanning the printhead, and detects ink discharge statuses of the nozzles of the printhead by using a photosensor in an area between the home position of the printhead and a position outside of an effective printing area. In next detection, nozzles different from those used in the previous test ink discharge are used for performing test ink discharge, and discharge statuses are detected. Discharge statuses of all the nozzles are detected in forward and backward scannings or a plurality of scannings.
摘要:
In an ink-jet printing apparatus, upon turning on the power source of the printing apparatus, a stirring operation of ink in the main tank is performed for a given period of time, and during subsequent printing operation, the stirring operation in the main tank is performed for the given period at every predetermined elapsed time period. By this, the printing operation for a long period can be performed employing ink having a water insoluble dye without causing a problem of admixing of bubble or so forth caused by stirring of the ink in the main tank.
摘要:
A terminal for a solenoid has a weld portion to which an end portion of a lead wire of the solenoid covered with a cover member is welded. The terminal also has a clamp portion for clamping a portion of the lead wire that is located toward a main body of the solenoid from the end portion of the lead wire. Tensile loads on the lead wire of the solenoid are received by the clamped portion of the lead wire and the welded end portion of the lead wire remains free from tensile loads.