JPH07108444B2 - Method for adjusting spray direction of mold release agent spray nozzle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a spray direction adjusting method for a mold release agent spray nozzle with a built-in mold used for die casting and the like.

[Prior Art] In a die for die casting or the like, a release agent is applied to the die in order to prevent seizing or galling of the die.

Further, in the case of die casting, a product having a deeply engraved portion or a complicated shape is often produced, and it is difficult to apply a release agent to such a portion.

In such a part, the part where the release agent is insufficiently applied or not applied may have a galling and a seizure on the product during the release.

A spray nozzle with a built-in mold is used so that the release agent can be applied to such deeply engraved portions or complicatedly shaped portions. A cooling medium is also sprayed onto the mold to remove deposits on the mold.

Then, it is necessary to adjust the spray direction of the spray nozzle so that the mold release agent or the cooling medium is sprayed on such a portion.

The conventional adjustment described above is performed by adjusting the slide core 4 as shown in FIG.
The positional relationship between the jetted portion 12 and the nozzle 8 existing in the above is generally positioned and sprayed with the release agent from the nozzle hole 17.

And, the adjustment of the spray direction of the nozzle 8 is performed with a thin operating rod.
An operator holding 24 puts his / her hand through the narrow gap between the slide core 4 and the movable insert 5, and inserts the tip of the operation rod 24 into the spray hole 17 from which the mold release agent is ejected, and inserts the nozzle 8 into the nozzle 8. It was turning.

In the figure, 3 is a slide holder, 6 is a movable main mold, and 7 is an ejection port.

[Problems to be solved by the invention]

In the conventional spray direction adjustment described above, the injection target portion 12 and the nozzle 8 are roughly aligned and adjusted for each jot. Therefore, the spray direction is adjusted by adjusting the slide core 4 and the movable insert 5. There is a problem that it is difficult to carry out the work because it is necessary to put a hand in between the narrow gaps between them.

That is, regarding the work performed by the operator through the narrow gap, it is very difficult to insert the tip of the operation rod 24 into the nozzle hole 17 from which the release agent is ejected, and when the operation rod 24 is inserted, the work is released. Since the spray of the mold agent can be stopped, it is not possible to simultaneously adjust the spray direction and visually check the spray state. Alternately, insert the operating rod 24 (adjust the spray direction) and visually check the spray state. It is necessary to perform the adjustment, and it is very difficult to adjust it, and in addition to this, the ejection of the release agent from the nozzle hole 17 is ejected with a spread, so it is very difficult to visually confirm the spray state. There were some problems.

As a result, it takes a long time to adjust the spray direction, and
Since this adjustment was done for each device (it took about 50 minutes of adjustment time), there was a problem that productivity was extremely low.

[Means for solving problems]

In order to solve the above-mentioned problem, the present invention sets a light emitting device to a release agent spray nozzle built in a movable main mold at the time of releasing the mold, and a marking plate is provided on a positioning pin protruding from a slide key of the movable main mold. It is characterized in that the light emitting device is set and then, while being visually observed, the light emitting device is moved so that the optical axis of the light from the light emitting device coincides with the mark printed on the marking plate to perform the positioning in the spray direction.

[Action]

With this configuration, it is not necessary to roughly align the object to be ejected on the slide core with the nozzle, and it becomes possible to adjust the spray direction during maintenance of the regular die of the die.

Therefore, when servicing the regular mold (without the slide core)
In: It is extremely easy to set the light emitter in the nozzle hole and the marking plate in the predetermined position, and by moving the light emitter so that the optical axis of the light emitter is aligned with the mark on the marking plate. , Spray direction adjustment and visual confirmation can be done at the same time.

And, since it is not necessary to roughly align the jetted part existing in the slide core and the nozzle, it is not necessary to adjust the spray direction for each device, and when the regular mold is maintained (about 3000 shots 1
It will be adjusted once a week.

〔Example〕

An embodiment of the present invention will be described in detail below. First, in describing the embodiments, a device and a mold for adjusting the spray direction will be described.

In FIG. 2, 1 is a fixed main mold, 2 is a fixed insert, 3 is a slide holder, 4 is a slide core fixed on the slide holder 3, 5 is a movable insert, and 6 is a movable main mold. The state (1) shows the state in which the slide core 4 (slide holder 3) is opened together with the movable insert 5 and the movable main mold 6.

7 is a mold release agent ejection port, 8 is a nozzle, and the movable main mold 6
Is built into. FIG. 3 (view taken along the line AA of FIG. 2)
Further, as shown in FIG. 4 (a sectional view taken along line BB in FIG. 2), the slide holder 3 slides while being guided by a slide key 13 provided on the movable main mold 6. Reference numeral 14 is a positioning pin protruding from the slide key 13. In FIG. 4, a plurality of jet nozzles 7 and nozzles 8 are provided (1
In some cases). In FIG. 5, 9 is a light emitter, and 10 is a marking plate attached to the positioning pin 14.
E indicates a visual position. The marking plate 10 is a transparent plate having a length L and a width W and having a mark 15 as shown in FIG. 6 (a view taken along the line CC in FIG. 5). The marking plate 10 is made according to the mold, and when it is fitted and set in the positioning pin 14, the positional relationship between the mark 15 and the positioning pin 14 is accurately positioned. Depending on the position of this mark 15, slide key
The slide holder 3 guided and mounted by the 13 is marked with the jetted portion 12 (see FIG. 2) existing on the slide core 4.
The position is indexed with respect to the slide key 13 on the basis of the positioning pin 14 so as to match with 15.

In FIG. 7, the light emitter 9 has a cylinder 22 in which a battery 19 and a miniature bulb 20 are housed, and a condenser lens 21 is provided at the tip thereof.
Focusing of the condenser lens is possible by taking in and out the holder 23. Reference numeral 18 is an insertion pin attached to the cylinder 22 in alignment with the optical axis C of the miniature light bulb 20. By inserting the insertion pin 18 into the nozzle hole 17, the axis of the nozzle 8 and the optical axis C are aligned. It has become.

If one example of the size of the light emitting body is shown, the diameter of the cylinder 22 is 25 m.
m, the total length is 135 mm, and the weight is 85 g, which is large enough to be supported by the frictional force between the spherical nozzle 8 and the holder 16.

Now, an embodiment of the present invention will be described with reference to FIG. In the figure, the state (a) shows the state immediately before the maintenance of the fixed die. From this state, the mold is opened as shown in (b), and the slide core 4 is opened together with the slide holder 3 to be in the state of (c) for maintenance.

In this state of (C) (after completion of maintenance), the light emitter 9 is set to the nozzle 8
The marking plate 10 and the positioning pin
Set to 14. Next, while visually observing (E), the light emitter 9 is attached to the mark 15 (see FIG. 6) on the marking plate 10.
The light emitter 9 is moved to adjust the spray direction of the nozzle 8 so that the light (optical axis) from is matched. When a plurality of nozzles 8 are provided, the light emitting device 9 is removed from the adjusted nozzle 8 and inserted into the nozzle hole 17 of the next nozzle 8 and the spray direction is adjusted similarly.

Then, after the spray direction adjustment is completed, the slide holder 3 is inserted into the movable main mold 6 while being guided by the slide key 13 at the position indexed by the positional relationship with the positioning pin 14 as shown in (d). Stop and apply the release agent to the sprayed portion 12.

In the above description, the application of the release agent has been described, but it is also possible to eject the cooling medium from the nozzle 8 to remove deposits such as burrs attached to the mold.

〔The invention's effect〕

As described above in detail, according to the present invention, since the spray direction is adjusted by the light emitter and the marking plate, it is possible to adjust the spray direction even when the slide core does not exist at that position. Can be adjusted.

As a result, it is not necessary to adjust the spray direction for each device, and since it is possible to perform the adjustment of the spray direction of the nozzle and the visual confirmation at the same time in a large work space, the time can be greatly shortened and the productivity can be improved. Could be greatly improved.

Also, since the spray direction of the nozzle can be adjusted and visually checked at the same time, the accuracy of the spray direction adjustment is improved, the release agent is reliably applied to the sprayed part, and there is no galling or seizure of the product. Of course, this has an excellent effect that the quality of the product is improved.

[Brief description of drawings]

1 to 7 are views showing an embodiment of the present invention,
FIGS. 1 (A) to 1 (D) sequentially show the spray direction adjusting method, and FIG. 1 (A) is a vertical cross-sectional view of the mold before mold opening,
(B) is a vertical cross-sectional view of the mold showing a state where the mold is opened,
(C) is a vertical cross-sectional view of the mold showing a state in which the slide core is also opened to adjust the spray direction, and (D) is a vertical cross-sectional view of the mold showing a state in which a release agent is applied. . 2 is a longitudinal sectional view of the mold showing a state where the mold is opened, FIG. 3 is a view taken along the line AA of FIG. 2, and FIG. 4 is a line taken along the line BB of FIG. FIG. FIG. 5 is a vertical cross-sectional view of the mold showing a state where the spray direction is adjusted,
The figure is a view taken along the line CC of FIG. FIG. 7 is a vertical cross-sectional view showing the relationship between the light emitter and the nozzle. FIG. 8 is a vertical cross-sectional view showing a state in which conventional spray direction adjustment is being performed. 1 ... Fixed main mold, 2 ... Fixed insert, 3 ... Slide holder, 4 ... Slide core, 5 ... Movable insert, 6 ... Movable main mold, 8 ... Nozzle, 9 ... Light emission Vessel, 10 ... marking plate, 12 ... jetted area, 13 ... slide key,
14 …… positioning pin, 15 …… mark.

Claims (1)

[Claims] 1. When releasing a mold, a light emitting device is set in a mold release agent spray nozzle built in a movable main mold, and a marking plate is set on a positioning pin protruding from a slide key of the movable main mold, and then visually inspected. While moving the light emitter so that the optical axis of the light from the light emitter matches the mark on the marking plate, the spray direction is adjusted by the mold release agent spray nozzle. .