JPH0137818Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a nozzle rotating type release agent spray gun that sprays a release agent onto a mold of a die-casting machine.

[Conventional technology]

Conventionally, as a mold release agent spray gun for a mold release agent spray device that moves back and forth between the open molds of a die-casting machine, the entire spray nozzle rotates forward and backward in the range of 90 to 120 degrees, spraying the mold release agent onto the mold surface. A nozzle rotation system disclosed in Japanese Utility Model Application Laid-open No. 58-175855 is known.

[The problem that the idea aims to solve]

The rotary injection nozzle in the conventional mold release agent spray device includes a central rotary body fixed to the shaft end of a rotary drive shaft that is rotated in forward and reverse directions by a drive gear device, and a rotary injection nozzle that protrudes in a radial direction from the outer periphery of this central rotary body. It consists of a plurality of nozzle support rods and a nozzle body for spraying mold release agent attached to the tip of each nozzle support rod, and a hose for supplying mold release agent and spraying air to each nozzle body. To prevent twisting, the entire nozzle is rotated forward and backward within a range of 90 to 120 degrees, so a drive gear is required to rotate the nozzle, and the head of the mold release agent spray device equipped with this drive gear. The structure is complicated and large, and there is a problem in that the operating means such as a fluid pressure cylinder that moves the structure back and forth between the molds must also be large. Moreover, when the nozzle bodies are rotated forward and backward in the range of 90 to 120 degrees so that the supply hoses for mold release agent and spray air to each nozzle body are not twisted, the nozzle bodies are rotated at the turning point of the forward and reverse rotation ( There was also the problem that the release agent was temporarily stopped at the reversing section (reversing section), and that the release agent was sprayed onto the mold with uneven density.

[Means to solve the problem]

In order to solve the above-mentioned problem, this invention is designed to release the rotary injection nozzle 3 from the mold of the die-casting machine while continuously rotating in one direction by the reaction force of the injection of the mold release agent ejected from the nozzle injection hole 14a. It is constructed so that the molding agent can be sprayed uniformly. That is, the mold release agent spray gun of this invention has a nozzle attachment port 7 through which the mold release agent is delivered by air, and is attached to the head of a mold release agent spray device that is moved back and forth between open molds of a die-casting machine. The sprayer body 1 has a center inner hole 13a communicating with the release agent delivery hole 7a of the main body nozzle attachment port 7, and an O-ring is installed in the nozzle attachment port 7 to prevent the release agent from leaking out from the attachment part. A nozzle center body 13 is sealed and rotatably attached at 12, and a nozzle center body 1 is attached to the outer periphery of the tip of this nozzle center body 13.
3, each nozzle rod 14 is provided with a plurality of nozzle rods 14 that protrude in the radial direction and are connected and communicated with the central inner hole 13a of the nozzle rod 14. The rotating injection nozzle 3 consisting of the nozzle center body 13 and a plurality of nozzle rods 14 is unidirectionally rotated by the ejection reaction force of the mold release agent ejected from the ejection hole 14a. It was configured to rotate continuously.

Each of the nozzle rods 14 may have the same length, but in order to widen the spray pattern of the release agent ejected from the nozzle ejection hole 14a by nozzle rotation, the length of the nozzle rod 14 must be adjusted. The jet holes 14a of the nozzle rod 14' having a long length and the jet holes 1 of the nozzle rod 14'' having a short length are made to have different lengths.
It is preferable to configure so that 4a rotates while changing its position in the rotation radial direction.

[Effect]

If the rotary spray nozzle 3 is structured to be rotated by the reaction force of the release agent ejection as described above, the conventional drive gear device is unnecessary, and the head structure of the release agent spray device can be made smaller and lighter. In addition, a small operating means such as a fluid pressure cylinder for moving the head portion back and forth between the open molds can be used. Moreover, the nozzle center body 1
If the spray gun structure is such that the mold release agent is sent from the center inner hole 13a of the nozzle rod 14 and sprayed from the tip jet hole 14a of the nozzle rod 14, there is no problem of hose twisting as in the conventional case. By continuously rotating in one direction by the ejection reaction force, the mold release agent can be sprayed uniformly onto the mold (without the uneven density as in the conventional method).

[Example of idea]

The structure of the mold release agent spray gun of this invention will be explained below with reference to the drawings. In this embodiment, the sprayer body 1
A fixed spray nozzle 2 (a spherical rotating spray nozzle whose spray direction can be freely changed) sprays a mold release agent onto a pair of molds (not shown) of a die-casting machine on both sides of the screw cap 2a. It is an air spray type mold release agent spray gun equipped with a rotating spray nozzle 3 (fixed in a predetermined direction by tightening the mold release agent) and a rotary injection nozzle 3.
It has air inlet ports 4 and 5, nozzle attachment ports 6 and 7 through which the mold release agent is sent out by mixing the air into the passage, and needle valves 8 and 9 that can adjust the amount of the mold release agent ejected.

The rotary injection nozzle 3 is attached to a nozzle attachment port 7 having a coupling structure screwed into the main body screw opening 1a by a screw cap 11 via a bearing 10 so as to rotate around its axis, as shown in FIG. There is. This rotary injection nozzle 3 has a central inner hole 13 communicating with a release agent delivery hole 7a of the nozzle attachment port 7.
a and a nozzle center body 13 which is rotatably attached to the nozzle mounting port 7 and sealed with an O-ring 12 to prevent the release agent from leaking to the outside; A plurality of nozzle rods 1 (four in the case of the embodiment) protruding in the radial direction are installed in communication with the inner holes 13a of 13.
4, and each nozzle rod 14 has a hole in the front side of the protruding end with an angle in a counterclockwise direction or a clockwise direction (the illustrated example shows the case of a counterclockwise direction), as shown in FIG. The entire injection nozzle 3 is rotated in one direction (in the direction of arrow A shown in FIG. 2) by the reaction force of the release agent ejected from the injection hole. There is.

Each of the nozzle rods 14 has a regular hexagonal cross-sectional shape, and an ejection hole 14a having a diameter of about 1 mm and communicating with the nozzle inner hole 14b is bored perpendicularly in one surface of the nozzle rod 14. One surface has an internal angle of 30 degrees and an external angle with respect to the axis of the nozzle center body 13
The rotating injection nozzle 3 is screwed and fixed to the nozzle center body 13 so as to be inclined at an angle of 150 degrees as shown in FIG. The jet hole 14a of the nozzle rod 14' and the jet hole 14 of the short nozzle rod 14''
The position of a is changed in the rotational radial direction, so that the ejection pattern of the release agent ejected from the nozzle ejection hole 14a by nozzle rotation is wider than that when the ejection hole 14a is provided at the same position.

The release agent spray gun configured as described above has a mounting portion of the sprayer main body 1 at the head portion of a release agent spray device installed to be moved forward and backward by a fluid pressure cylinder or the like between open molds of a die-casting machine. 15 is attached so that the elevation angle can be adjusted. When in use, a mold release agent supply hose (not shown) is connected to the mold release agent inlet 4, and an air supply hose (not shown) is connected to the air inlet 5. ) are connected, and when the molds are opened, a spray head with a spray gun attached enters between the open molds, and a spray head with a spray gun attached thereto enters into the pair of open molds from both the fixed injection nozzle 2 and the rotating injection nozzle 3. In the past, mold release agents were sprayed with air. In this case, unlike the injection mode of the mold release agent jetted from the fixed jet nozzle 2, the mold release agent jetted from the rotary jet nozzle 3 is directed counterclockwise from each nozzle rod 14 of the nozzle 3 toward the mold surface. direction or clockwise direction, and the nozzle 3 rotates around the axis of the nozzle mounting port 7 due to the ejection reaction force of this mold release agent, and the mold release agent jetted from the nozzle rotates in a spiral shape. Therefore, even if the mold has a complex uneven shape, the mold release agent can be sprayed onto the uneven rising surface, etc., which could not be sprayed with the conventional nozzle of this mold. It becomes possible to perform spraying well.

In the above embodiment, the sprayer main body 1 is provided with two nozzles: a fixed spray nozzle 2 and a rotary spray nozzle 3 that rotates due to the reaction force of the release agent. Since this is not the main point, it may or may not be provided.

[Effect of idea]

The mold release agent spray gun of this invention is equipped with a rotary spray nozzle 3 that is configured to continuously rotate in one direction by the reaction force of the mold release agent jetting, so there is no need for a conventional drive gear device. Therefore, the head structure of the mold release agent spray device can be made smaller and lighter, and the operating means such as a fluid pressure cylinder for moving the head portion back and forth between the open molds can also be made smaller. Moreover, the nozzle center body 1
By adopting a spray gun structure that sends the mold release agent from the center inner hole 13a of the nozzle rod 14 and sprays it from the tip ejection hole 14a of the nozzle rod 14, the problem of forward and reverse rotation of the nozzle caused by the hose twisting as in the past is solved. The rotating spray nozzle 3 is continuously rotated in one direction by the ejection reaction force of the mold release agent, so that the mold release agent can be sprayed uniformly onto the mold (without uneven density as in the conventional method). It provides special effects that cannot be obtained with conventional technology.

[Brief explanation of the drawing]

FIG. 1 is a front view with main parts cut away showing a mold release agent spray gun of this invention, and FIG. 2 is a left side view of FIG. 1. DESCRIPTION OF SYMBOLS 1... Sprayer main body, 3... Rotating injection nozzle, 4... Mold release agent inlet, 5... Air inlet, 7... Nozzle installation port, 7a... Mold release agent delivery hole, 10... Bearing, 1
1... Screw cap, 12... O-ring, 13... Nozzle center body, 13a... Center inner hole, 14... Nozzle rod,
14a... Nozzle ejection hole.

Claims (1)

[Claims for Utility Model Registration] (1) The rotary injection nozzle 3 continuously rotates in one direction due to the reaction force of the release agent ejected from the nozzle ejection hole 14a, and releases the mold from the mold of the die-casting machine. A mold release agent spray gun with a nozzle rotation type that uniformly sprays the mold release agent, which has a nozzle attachment port 7 through which the mold release agent is delivered by air, and which is moved back and forth between the open molds of a die casting machine. The sprayer body 1 is attached to the head of the main body, and has a center inner hole 13a communicating with the release agent delivery hole 7a of the nozzle attachment port 7 of the main body, and the release agent is delivered to the nozzle attachment port 7 from the attachment portion to the outside. A nozzle center body 13 is rotatably mounted and sealed with an O-ring 12 to prevent leakage, and a radiator is attached to the outer periphery of the tip of the nozzle center body 13 so as to be connected and communicated with the center inner hole 13a of the nozzle center body 13. A plurality of nozzle rods 14 protrude in the direction, and each nozzle rod 14 has an ejection hole 14a bored at an angle in the counterclockwise direction or clockwise direction on the front side of the protruding end. A rotary injection nozzle 3 consisting of a nozzle center body 13 and a plurality of nozzle rods 14 is configured to continuously rotate in one direction by the ejection reaction force of the mold release agent ejected from the ejection hole 14a. Molding agent spray gun. (2) The length of the nozzle rod 14 is made different from long to short,
A request for registration of a utility model characterized in that the ejection hole 14a of the long nozzle rod 14' and the ejection hole 14a of the short nozzle rod 14'' are configured to rotate with their positions changed in the rotational radial direction. The mold release agent spray gun according to item 1.