JPS5980351A - Spraying method and sprayer in die-casting machine - Google Patents

Abstract

PURPOSE:To enable to perform uniform spray coating, by spraying a parting agent through each spray nozzle while moving the group of spray nozzles along the working surfaces of metal dies, and changing the spraying direction of each spray nozzle at the time of forwarding motion from that at the time of retreating motion. CONSTITUTION:While moving the group 1 of spray nozzles comprising the group 1a of spray nozzles for a stationary metal die and the group 1b of spray nozzles for a movable metal die along both working surfaces 2'a, 2'b of the stationary and movable metal dies 2a, 2b, a parting agent is sprayed through each spray nozzle 1'a, 1'b onto both working surfaces of the metal dies at the same time. Hereon, the spraying directions of the nozzle groups 1'a, 1'b are horizontally changed in a manner such that they are set in a state opposite to each other at the time of forwarding motion but in a state turning away from each other at the time of retreating motion. Hence, the parting agents can be efficiently, uniformly and sufficiently sprayed onto the entire working surfaces of the metal dies in a short time, while inhibiting the mutual interference of the parting agents with each other to the possible extent.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spraying method and a spraying device for spraying a mold release agent or the like onto the molding surfaces of a fixed mold and a movable mold in a die-casting machine.

In the conventional rod spray method, the group of spray nozzles was moved and stopped at approximately the center of the molding surfaces of both molds, and the mold release agent was injected simultaneously from a large number of spray nozzles. The shields interfere with each other, making it difficult to coat the entire molding surface evenly and thoroughly.If you try to coat the mold evenly and thoroughly, you will have to spray more release agent than necessary. If this is not done, not only will mold release agent be wasted and the working environment deteriorate, but also the spray equipment will have to be extended, leading to inconveniences such as delays in the casting cycle due to overcooling of the mold. Ta. Moreover, since a large number of spray nozzles are required, the iKM of the spray nozzle group increases, the spray device itself becomes larger, and the Wri alignment of directing the large number of spray nozzles in the desired direction is extremely difficult. It has the disadvantage of being difficult and time consuming.
child.

In view of these conventional inconveniences, we have developed a method that minimizes mutual interference between mold release agents and sprays them efficiently and evenly over the entire molding surface in a short amount of time. In addition, it is an object of the present invention to provide a spray method and a spray device for a die-casting machine that requires only a small number of spray nozzles constituting a spray nozzle group.

In order to achieve the above object, the spray method of the present invention injects mold release agent from each spray nozzle while moving the spray nozzle group along the molding surface, and each spray It is characterized by having different spray directions of the nozzles, and the spray nozzle group is for fixed molds and b.
This is characterized by having two groups of nozzles, one for the moving mold, and one for the moving mold, so that the mold release agent is injected onto the molding surfaces of both molds at the same time.

Hereinafter, one embodiment of the spray device of the present invention will be explained based on one song.

The spray nozzle group (1) consists of a spray nozzle group for fixed molds (1a) and a spray nozzle group for movable molds (ib).
Consisting of two nozzle groups, fixed mold (2a) and CI
Both mold molding surfaces (2'a) (2'b) of J moving mold (2b)
) While moving along the VC, each spray nozzle (1
'a)... (1'b)... to both mold molding surfaces (2'a
) (2' b) and type 1 agent are simultaneously injected.

Both the fixed mold and movable mold nozzle groups (1a
) (1b) is an appropriate number of spray nozzles (1'a) - (1
'b)... are arranged vertically [σ or horizontally] toward the mold forming surfaces (2'a) (2'b), respectively, and both through-nozzle groups (1a) (1b) The support arm (3) is installed at the tip so that the injection angle with respect to the mold bx type IMJ (2'a) (2'b) can be varied in the horizontal or vertical direction.

That is, as in the illustrated embodiment, the spray nozzle group (1) is horizontally (front and back) along both mold molding surfaces (2'a) (2'b).
In the case of a method of spraying while moving in the direction, an appropriate number of spray nozzles (1'a)...(1'b)...
are arranged vertically and parallel to each other toward the mold forming surface (2'a X2'b) K to form both spray nozzle groups (ia (ia)Ob) are each installed at the tip of the support arm (3) so that the spray angle relative to the mold molding 1 river (2'a) (2'b) can be varied in the horizontal direction, and the twisted spray nozzle group (1 ) on both mold molding surfaces (2'a) (2'b
), each spray nozzle (1'a)
...(t'b)... are molded by molding u'+i (2'
aX2'b), and both spray nozzle groups (1aX1b) are attached to the mold forming surfaces (2'a) (2'b) at the tips of the support arms (3). It is installed so that the spray angle can be varied in the vertical direction.

Various mechanisms are conceivable for varying the spray angle of the double spray nozzle group (1aX1b) with respect to the mold forming surface (mu) (2'b) in the horizontal or vertical direction, but the one in the illustrated embodiment The spray nozzles (1'a)...(1'b)... constituting the nozzle group (1aX1b) are formed into a vertically long flat plate shape and are spaced appropriately along the longitudinal direction of the L support plate (4aX4b). Arm rods (5a) erected vertically for each
・(5b)-- are taken perpendicularly to each other, and the support plates (4a, 4b) are pivoted ( 7), and is connected to the rond (9') of the variable cylinder (9) through the connecting rods (8a) and (8b). Both spray nozzle groups (la,) (lb)l; Supporting plates (4a, 4b) swing horizontally around the pivot (7) of the support column (6), (la
) (lb) and the injection angle can be changed in the horizontal direction with respect to the molding surfaces (2'a) and (2'b).

With this configuration, as is clear from the comparison between Fig. 1 and Fig. 3, the injection angle of both sugray nozzle groups (1a) and (1b) can be adjusted in the horizontal direction with a slight movement of the variable cylinder (9). It becomes possible to make a large variation (approximately 90° in the illustrated example). In addition, 00 in the figure is an adjustment tool for adjusting the spray angle of both spray nozzle groups (18X1b) with respect to the mold forming surface (2'a) (2'b). The supporting arm (3) supporting the (lb) is formed by molding both molds +
It is configured to move horizontally or vertically along f+i (2'aX2'b).

Next, the operation of the spray device of the present invention will be explained based on FIG.

First, when the mold opening of the die-casting machine is completed, the support arm (3)
move forward from the position between the two molds (2aX2b). At that time, both sufu0re nozzle groups (1aX1b)
As shown in FIG. 1, the injection directions are directed toward the molding surfaces (2'aX2'b) of each mold, facing each other.

Then, as the support arm (3) moves forward (forward movement), both spray nozzles (], aX1b,) move to position ■ (near the molding surfaces (2'a) and (2'b) of both molds). When the spray nozzle group (1a) (1b) reaches both mold forming surfaces (2
'a) Start spraying the mold release agent, etc. at the same time to (2/b), continue spraying the mold release agent, etc. without moving it along the molding surface of both molds, and move the mold release agent, etc. to Molding surface (2'a) (2'b
), the injection of the mold release agent, etc. is stopped. Both sprues l/- nozzle group (1a) (1b
) is advanced to the ■ position, and the movement (forward movement) of the support arm (3) is stopped at that position.

Next, after changing the spray angles (directions) of both spray nozzle groups (1a) and (1b) in the horizontal direction so that they are in opposite directions as shown in Fig. 3 at position (3), the support arm (3) is At the same time as retracting (backward movement), both snow and nozzle groups (la
) (lb), and continue spraying the mold release agent etc. while moving along the molding surfaces (2'a) and (2'b) of both molds.

Then, when it has moved back (backward movement) to the ■ position, the injection of mold release agent, etc. is stopped, and it is moved back (backward movement) to the original 0 position 161, and the support arm (3) is stopped and both Spray nozzle group (1
a) The injection angle (direction) of (1b) is returned to the forward (forward) state, and in this state it is kept on standby until the next mold opening.

Incidentally, the shooting angles of the two spray nozzle groups (1a) and (1b) may be gradually changed by moving forward (forward movement) and backward movement (returning movement). Father, both spray nozzle groups (1
Variations in the injection angle in (a) and (1b), advancement (forward movement) and retreat (backward movement) of the support arm (3), injection of mold release agent, and other operations are controlled by limit switch combinations VC and j. : 7:r
This is controlled by sequence control or the like.

Since the present invention is configured in this way, compared to the conventional method, rlj
++ There is almost no mutual interference between the molding agents, so that the entire molding surface of the mold can be sprayed and coated efficiently in a short period of time with Shonen's Schiff 11 molding agent. or,
Since the spray direction of each spray nozzle is different between the forward and return times, it is possible to spray release agent etc. evenly and reliably over the entire molding surface, even on the uneven molding surface. Become.

Moreover, since only a small number of spray nozzles are required to make up the spray nozzle group, it is possible to reduce the size and weight of the spray device itself, as well as reduce costs. Since there is no need to adjust the orientation and it is sufficient to simply arrange and install the parts facing the molding surface, the one-car handle becomes very simple and the workability can be greatly improved.

Therefore, the intended purpose can be achieved.

[Brief explanation of drawings]

The drawings show one embodiment of the neck of the spray device of the present invention, and FIG. 1 is a plan view of the former state (when moving forward), FIG. 2 is a front view of the same,
Fig. 3 is a plan view of the returning (backward) state, Fig. 4 is a front view of the same, and Fig. 5 is a schematic diagram explaining the operating order of the spray device. Nozzle group, (1a) is a soufflé nozzle group for fixed molds, (1b) is a soufflé nozzle group for movable molds, (1'a X l'b) (d spray nozzle, (2a) is a fixed mold, ( 2b) is a movable mold, (2
'a%2'b) is the molding surface, and (3) is the support arm. Patent applicant: Fuso Light Alloy Co., Ltd. Patent applicant: Tochigi Food Co., Ltd., i. Agent Masana Hayakawa LB: l,゛. −=!゛ko evening

Claims (3)

[Claims] (1) The release agent can be sprayed from each spray nozzle while moving the spray nozzle group along the molding surface of the mold, and the direction of each spray nozzle is different between forward and return. A method of spraying in a die-casting machine, which is characterized by: (2) The spray nozzle group consists of two nozzle groups, one for the fixed mold and one for the movable mold, and the I
A spraying method according to item (1) of the scope of the patent h1'1, wherein the IJ type agent is simultaneously injected. (3) A fixed mold spray nozzle group and a movable mold spray nozzle group are each formed by arranging the spray nozzles vertically or horizontally toward the mold forming surface, and both spray nozzle groups are supported. The tip of the arm is installed so that the injection angle relative to the molding surface can be varied horizontally or vertically, and the upper 61 support arm is configured to move horizontally or vertically along both molding surfaces. A spray device in a die-casting machine that takes advantage of this.