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Blow Gun
Blow Moulding Machine
A” blow-moulding machine comprises a mixer for mixing refractory particles with a binder and a hardener or the like, a main tank for transporting moulding sand.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a ” pxb machine” to be used in a process for manufacturing a mould by blowing moulding sand onto a pattern surface.
2. Description of the Prior Art
The inventors of this invention previously proposed a blow- moulding process, in which a facing sand layer is formed by blowing onto a pattern surface moulding sand prepared by mixing refractory particles such as silica sand, chromite sand, zirconia sand, etc.
SUMMARY OF THE INVENTION
The blow- moulding machine according to the present invention has different structures depending upon the properties of moulding sand to be blown.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic side view showing an outline of a ” pxb-200 blow- moulding machine “according to a first preferred embodiment of the present invention,
FIG. 2 is an enlarged partial schematic view of a blast hose in the blow- moulding machine shown in FIG. 1,
FIG. 3 is a schematic cross-section view of the blast hose in FIG. 2,
FIG. 4 is a schematic side view showing an outline of a blow- moulding machine according to a second preferred embodiment of the present invention,
FIG. 5 is a schematic longitudinal cross-section view showing details of the structure of the spray gun included in the ” pxb-100 blow- moulding machine “ shown in FIG. 4,
FIG. 6 is a schematic cross-section view of a turbulence stimulating plate taken along line X-X in FIG. 5,
FIG. 7 is a schematic longitudinal cross-section view showing a modified structure of the spray gun included in the blow- moulding machine shown in FIG. 4, and
FIG. 8 is a schematic cross-section view of a turbulence stimulating plate taken along line X-X in FIG. 7.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Embodiment 1
A blow- moulding machine according to this embodiment of the invention is applicable to moulding sand employing a highly viscous binder and having a long bench life.
Embodiment 2
As a result of carrying out blow moulding by means of the machine according to the present invention, the following advantages can be obtained:
(1) A process from the mixing of moulding sand to the moulding becomes possible, and so, narrowing of a moulding workshop, great reduction of moulding labor, and energy saving can be achieved.
(2) The subject machine is applicable to middle-sized and large-sized individual castings, and in contrast to the fact that a thickness of a facing sand layer was necessitated to be as thick as 100-300 mm in the prior art although it varied depending upon a size of a casting
(3) While a mould coating agent was applied on the surface of the facing sand layer to prevent seizure of the mould in the prior art.
About the Author
What is a blow back system on an airsoft gun?
I am planning on buying this new electric airsoft pistol but in the description it says it has a "a self cocking blow back system," what does that mean
--I will be awarding best answer
Blowback is basically when the slide automatically slides back after every shot in order to reload the pistol or rifle. See the following quick videos
http://www.airsplat.com/Images/G17.mpg
http://www.airsplat.com/Images/USP.mpg
Blow Gun Rattlesnake Death, Relentless Pursuit