JPH034423Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a release agent spray nozzle for spraying a release agent onto a mold of a die-casting machine, an injection molding machine, or the like.

[Conventional technology]

A die casting machine or an injection molding machine is equipped with a mold release agent spraying device as a mechanical robot that enters between open molds and sprays a mold release agent onto the mold surface. A spray nozzle with adjustable volume is installed.

This conventional mold release agent spray nozzle includes a nozzle body having a mold release agent inlet and a compressed air inlet, and a nozzle port for spraying the mold release agent introduced into the main body by compressed air. A needle valve is provided that can move toward and away from a valve seat at the inner end of the nozzle opening, which adjusts the opening of the nozzle opening.

[Problem that the invention attempts to solve]

However, the conventional mold release agent spray nozzle has a screw-type needle valve that adjusts the opening of the nozzle opening (adjusts the amount of mold release agent sprayed), and the needle valve is manually rotated to open. There is no particular problem with a mold release agent spraying device that always sprays a fixed amount of mold release agent at a fixed position on the mold, but if the mold release agent spraying device is some surfaces (e.g. end surface, top surface, bottom surface, side surface, etc. of the male mold protrusion)
When the mold release agent is sprayed by moving the mold, there is a problem in that the spray amount of the mold release agent cannot be automatically controlled depending on the position on the mold surface.

[Means for solving problems]

In order to solve the above-mentioned conventional problems, this invention uses a slide needle valve that is slidably inserted into the needle valve seal guide portion of the nozzle body, and a coil is energized as the operating source of the slide needle valve. A proportional solenoid capable of electromagnetic proportional control is used, which can move and stop the movable iron core at any position according to changes in current and voltage, and this proportional solenoid is connected so that the movable iron core operates the needle valve. It is characterized in that it is attached to the nozzle body in a straight line.

[Effect]

The mold release agent spray nozzle of this invention uses a proportional solenoid capable of electromagnetic proportional control as described above as the operating source of the slide needle valve, so this proportional solenoid is electrically connected to the control device of the mold release agent spraying device. By operating the mold release agent according to a predetermined process, the amount of spraying agent can be automatically controlled depending on the position on the mold surface.

〔Example〕

Hereinafter, an embodiment of this invention will be described with reference to the drawings in FIGS. 1 and 2. In the figures, 1 is a nozzle body having an inlet 2 for mold release agent 0 and an inlet 3 for compressed air a;
Reference numeral 4 denotes a valve seat portion 4 fixed to an O-ring at the inner end of the mouth hole, which is screwed onto the inner threaded portion of the tip end screw port 1a of the nozzle body 1.
A nozzle port 5 for spraying a mold release agent having a diameter 5 is a jet port screwed onto the external threaded portion of the main body screw port 1a, and the compressed air a introduced from the air introduction port 3 is passed through the hole in the jet port 5. The mold release agent 0 can be sprayed from the nozzle port 4 by jetting it forward from the nozzle port 5a.

Reference numeral 6 denotes a needle valve having a tapered pointed end that can move toward and away from the valve seat 4a at the inner end of the orifice for adjusting the opening degree of the nozzle orifice 4; The needle valve is formed as a slide needle valve that is slidably inserted into the needle valve seal guide portion 10 of the needle valve.
Reference numeral 7 denotes a proportional solenoid capable of electromagnetic proportional control that can move and stop the movable iron core 9 to any position by changing the current and voltage applied to the coil 8. This proportional solenoid 7 is the operating source of the needle valve 6. Spacer block 1 is attached to the rear end of nozzle body 1 as
1, and by connecting the movable core 9 of the proportional solenoid 7 and the needle valve 6 by a coupling means such as a screw joint, the needle valve 6 can be moved and stopped at any opening position. It's starting to work. In the case of the embodiment shown in FIG. 1, the solenoid 7 is energized to close the slide needle valve 6.
A compression spring 12 for returning the movable core is interposed between the needle valve flange portion and the main needle valve seal guide portion 10, but when the solenoid 7 is energized, In the case of the type that pulls the needle valve 6, a compression spring 12 for returning the movable core is interposed between the casing end wall of the proportional solenoid 7 and the needle valve flange as shown in FIG.

[Effect of idea]

In the release agent spray nozzle of this invention, the needle valve 6 is connected to the needle valve seal guide portion 10 of the nozzle body 1 as described above.
A slide needle valve is slidably inserted into the slide needle valve 6, and as an operating source of the slide needle valve 6, the movable iron core 9 can be moved and stopped at any position by changing the current and voltage applied to the coil 8. Since the proportional solenoid 7 that can be electromagnetically controlled is used, this proportional solenoid can be electrically connected to the control device (not shown) of the mold release agent spraying device and operated according to a predetermined process. The spraying amount of mold agent can be automatically controlled according to the position on the mold surface, which is an excellent practical effect that cannot be expected with conventional mold release agent spray nozzles.

[Brief explanation of the drawing]

1 and 2 are longitudinal sectional views showing the structure of the mold release agent spray nozzle of the present invention. 1... Nozzle body, 1a... Body screw opening, 0... Mold release agent, 2... Mold release agent inlet, a... Compressed air, 3... Compressed air inlet, 4... Nozzle port, 4a... Orifice of the nozzle port Inner end valve seat portion, 5... Blower port, 6... Slide needle valve, 7... Proportional solenoid, 8... Coil, 9... Movable iron core, 10... Needle valve seal guide portion of the main body, 1
2...Compression spring for returning the movable core.

Claims (1)

[Scope of utility model registration request] A nozzle body having a mold release agent introduction port and a compressed air introduction port has a nozzle port for spraying the mold release agent introduced into the main body by compressed air, and an opening degree of this nozzle port is adjusted. In a mold release agent spray nozzle for spraying a mold release agent onto a mold of a die-casting machine or an injection molding machine, the needle valve is provided with a needle valve that can move toward and away from a valve seat at the inner end of the mouth hole. is a slide needle valve that is slidably inserted into the needle valve seal guide portion of the nozzle body, and as the operating source of this slide needle valve, the movable iron core can be moved to any position by changing the current and voltage applied to the coil. A mold release agent characterized in that a proportional solenoid capable of electromagnetic proportional control that can be moved and stopped is used, and the proportional solenoid is connected to the nozzle body so that the needle valve is operated by its movable iron core and is attached to the nozzle body. spray nozzle.