JPH081682A - Molded product taking-out device in mold - Google Patents

Abstract

PURPOSE:To allow a molded product to certainly fall even when the molded product is ready to adhere to a fixed mold or a movable mold at the time of the taking-out of the molded product. CONSTITUTION:A mold 1 is constituted so that a molded product 3 is extruded from the opened mold 1 by a knockout pin 2 to fall under its own wt. to be taken out. An air blowing means 4 blowing air to the molded product 3 in order to allow the molded product 3 to fall in a mold opening state is provided. The molded product 3 bonded to the mold by static electricity is allowed to fall by air to be taken out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for taking out a molded product from a molding die for molding a micro molded product.

[0002]

2. Description of the Related Art Conventionally, a molding die 1 as shown in FIG. 7 has been known as a tool for molding a micro-molded article for electric equipment such as a relay card. In FIG. 7, 6 is a fixed mold,
Reference numeral 7 denotes a movable mold, a plurality of recesses 17 serving as molding cavities are formed in the movable mold 7, and the surface of the fixed mold 6 facing the cavity is a flat surface. Molding is performed by clamping the above molding die 1, and when the molding is completed, the movable die 7 is moved and a molded product 3 is formed by a knockout pin.
Then, as shown in FIG. 7A, the molded product 3 is naturally dropped downward by its own weight to be taken out.

However, when the molded product 3 is an extremely small molded product having a length of 0.1 g or less and a length of 10 mm or less, the weight thereof is light, and thus the static electricity adheres to the fixed mold 6 and the movable mold 7 (particularly the movable mold). 7). When the mold is clamped for the next molding while the molded product is attached to the fixed mold 6 and the movable mold 7 as described above, the fixed mold 6 and the movable mold 7 are separated as shown in FIG. 7B. There is a problem that the molded product 3 is sandwiched between them and the mold clamping becomes defective.

Further, in the molding die 1 in which the die is opened and pushed out by the knockout pin and taken out by its own weight drop, the fixed die 6, the movable die 7, and the slide groove of the movable die 7 are moved. In the case of forming a molding die with a slide core, when the mold is opened and the molded product is pushed out by a knockout pin and allowed to fall naturally, the molded product may get into the slide groove where the slide core slides. Had a problem that the slide core could not be clamped when clamping.

In any of the above cases, the mold cannot be clamped, so it is necessary to stop the mold clamping of the molding die 1 and remove the molded product 3. Molded product 3 which is a defective product in which the die stop time becomes long and it is pinched and deformed during mold clamping.
However, there is a problem in that it is mixed in the molded product 3, which is a good product. Incidentally, Japanese Patent Application Laid-Open No. 5-21491 discloses a molding die in which air is blown out.
The one disclosed in Japanese Patent No. 21491 is nothing more than a method in which dust of the granular material is floated by air and sucked by another air suction device. In the conventional case, the product is extruded by a knockout pin. There was no one that took out a molded product by using air as an auxiliary means for dropping when dropping by the self-weight.

Further, a method using air for cleaning a mold is known from Japanese Patent Application Laid-Open No. 3-202327, and a method of removing gate clogging with air is known from Japanese Patent Application Laid-Open No. 2-289321. Although it is
Also in these conventional examples, there is no one in which air is used as an auxiliary means for dropping when a molded product is pushed out by a knockout pin and dropped by its own weight, and the molded product is taken out.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to provide a fixed mold or a movable metal mold when the molded product is taken out. An object of the present invention is to provide a device for taking out a molded product from a molding die that can surely drop the product even if it is attached to the mold or prevent the molded product from entering the slide groove in which the slide core slides.

[0008]

In order to solve the problems of the above-mentioned conventional examples and to achieve the object of the present invention, a device for taking out a molded product in a molding die of the present invention is a molding die 1 opened from a mold. In a molding die 1 in which a molded product 3 is pushed out by a knockout pin 2 and taken out by its own weight drop, air blowing means 4 for blowing air to the molded product 3 to drop the molded product 3 in a mold open state.
Is provided.

It is also preferable to provide an air blowing means 4 for blowing air to the molded product 3 from obliquely above in the mold open state. It is also preferable that the air blowing means 4 has a large number of nozzles 5 arranged in parallel. It is also preferable that the air blowing means 4 blows air in a pulsed manner.

Further, in the molding die 1 in which the molding 3 is pushed out from the molding die 1 opened by the knockout pin 2 and is taken out by its own weight drop, the fixed die 6, the movable die 7 and the movable die 7 are movable. A molding die 1 is constituted by a slide core 9 movable in a slide groove 8 of a die 7, and an air blowing means 4'for blowing out a molded product 3 which enters the slide groove 8 is provided. Is also preferable.

Further, in the molding die 1 in which the molding 3 is pushed out from the molding die 1 opened by the knockout pin 2 and is taken out by its own weight drop, the fixed die 6, the movable die 7, and the movable die The molding die 1 is configured with the slide core 9 that moves in the slide groove 8 of the mold 7, and the air blowing means 4'for blowing out the molded product 3 that enters the slide groove 8 is provided, and the molded product in the mold open state. It is also preferable to provide another air blowing means 4 for blowing air to the molded product 3 to drop the molded product 3.

[0012]

In the present invention, therefore, when the molding die 1 is opened and the molded article 3 is dropped by the knockout pin 2, the molded article 3 is blown with air by the air blowing means 4 to form the molded article 3 Even if an attempt is made to adhere to the fixed mold 6 or the movable mold 7 due to static electricity, the molded product 3 can be taken out by dropping it with air so that it will not adhere reliably.

In addition, in the mold open state, air is blown onto the molded product 3 obliquely from above so that a sloped surface portion 10 is provided in the lower part of the mold so that the molded product 3 easily falls by its own weight. Even if the molded product 3 adheres to the molded product 10 due to static electricity, air can be surely blown onto the molded product 3 adhered to the inclined surface portion 10 from obliquely above and dropped.

Further, in the case where the air blowing means 4 has a large number of nozzles 5 arranged in parallel, the air flows along the parting surface of the molding die 1 to more effectively drop the molded product 3. It will be excellent. Further, when the air blowing means 4 blows the air in a pulsed manner, the air is impacted and blown onto the molded product 3, so that the molded product 3 tends to adhere to the fixed mold 6 and the movable mold 7. The effect of dropping is more certain.

Further, in the molding die 1 in which the molded product 3 is pushed out from the opened molding die 1 by the knockout pin 2 and taken out by its own weight drop, the fixed die 6, the movable die 7, the movable die By forming the molding die 1 with the slide core 9 that moves in the slide groove 8 of the die 7, and by providing the air blowing means 4 ′ for blowing out the molded product 3 that enters the slide groove 8, the molding die 1 When the molded product is opened and the molded product 3 is dropped by the knockout pin 2, the molded product 3 may enter the slide groove 8. In this case, the molded product 3 which enters the slide groove 8 is blown by the air blowing means 4 '. It can be dropped by the air blown from it.

Further, in the molding die 1 in which the molding 3 is pushed out from the molding die 1 opened by the knockout pin 2 and is taken out by its own weight drop, in the fixed die 6, the movable die 7, the movable die 7. The molding die 1 is configured with the slide core 9 that moves in the slide groove 8 of the mold 7, and the air blowing means 4'for blowing out the molded product 3 that enters the slide groove 8 is provided, and the molded product in the mold open state. In the case of providing another air blowing means 4 for blowing air to the molded product 3 for dropping the molded product 3, when the molded product 1 is opened and the molded product 3 is dropped by the knockout pin 2, the molded product 3 is dropped. Even if the molded product 3 is attached to the fixed mold 6 or the movable mold 7 due to static electricity by blowing air onto the fixed mold 6 by the air blowing means 4, the molded product 3 is dropped so as not to be reliably adhered by air. Are those can be taken out molded article 3, also in which the molded article 3 enter into the slide groove 8 can be dropped by the air blown from the air blowing unit 4 '.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings.
FIG. 1 shows an embodiment of the present invention. The molding die 1 is basically composed of a fixed die 6 and a movable die 7. The fixed die 6 is attached to a mounting plate 11 via a runner plate 12. The movable mold 7 includes a movable mounting plate 13, a spacing plate 14,
It is attached via a receiving plate 15, and further, an ejector plate 16 and a knockout pin 2 protruding from the ejector plate 16 are provided. Here, in the embodiment shown in the attached drawings, the parting surface of the fixed mold 6 is a flat surface, and the recess 17 for the cavity is provided in the parting surface of the movable mold 7, and the tip of the knockout pin 2 is formed. Can project from the bottom of the recess 17. Movable type 7
The air blowing means 4 is provided on the upper part of or on the upper surface of the fixed mold 6. The air blowing means 4 includes an air blowing jig 18 having a nozzle 5 attached to the upper surface of the movable die 7 or the fixed die 6, and a hose 19 attached to the air blowing jig 18.
And an air supply means (not shown) such as an air pump for supplying air via the air blowing jig 1.
The nozzle 5 provided in the nozzle 8 is arranged at a position projecting laterally from the movable mold 7 or the fixed mold 6, and by blowing out the air from the nozzle 5, the air flows along the parting surface. The molded product 3 molded by the molding die 1 of the present invention is a micro-molded product for electric equipment such as a relay card, for example, a very small molded product having a length of 0.1 g or less and a length of 10 mm or less and a weight. Is light.

Therefore, the molding die 1 having the above structure is clamped, resin is injected into the cavity recess 17 for molding, and the movable mold 7 is moved after molding to move the molding die 1 as shown in FIG. As shown in FIG. 1 (b), the molded product 3 is projected by the knockout pin 2 and is dropped by the weight of the molded product 3 as shown in FIG. 1 (c). Here, as shown in FIG. 1D, the air blowing means 4 blows out air toward the molded product 3 that is about to fall, so that, for example, static electricity when dropped causes the movable mold 7 as shown in FIG. Alternatively, the molded product 3 that is trying to adhere to the fixed mold 6 or that adheres to the fixed mold 6 is shown in FIG.
As shown in (d), it can be blown out and fall down by its own weight to serve as a take-out assist when taking out. As described above, according to the present invention, when the molded product 3 is ejected by the knockout pin 2 and is dropped by its own weight, the molded product 3 is ejected from the air supply means 4'so that the molded product 3 can be reliably taken out. The air to be used plays an auxiliary role in taking out the molded product 3 so that the molded product 3 can be reliably taken out from the molding die 1.

Here, as shown in FIG. 2, a large number of nozzles 5 are provided along the parting surface of the movable mold 7 or the fixed mold 6.
By arranging the parts in parallel, the air can be blown out over the entire width of the parting surface, and as a result, the air can be made to flow down along the entire parting surface, and the molded product 3 can be more reliably dropped and taken out. Is something that can be done.

Further, as shown in FIG. 3, the air blowing means 4 may be provided so as to blow air onto the molded product 3 obliquely from above in the mold open state. For example, in the case where the sloped surface portion 10 is provided below the movable mold 7 so that the molded product 3 can easily drop by its own weight, even if the molded product 3 is electrostatically attached to the sloped surface part 10, the upper portion of the fixed mold 6 is Air blowing means 4 is provided in the air blower so that air is blown obliquely from above to the movable mold 7 in the mold open state.
Even if the molded product 3 adheres to the inclined surface portion 10 of the movable mold 7 due to static electricity, air can be surely blown onto the molded product 3 attached to the inclined surface portion 10 from diagonally above and dropped. . 3A to 3D show the molding die 1.
The series of steps from the mold opening to the removal of the molded product 3 are shown.

Further, when the air is blown from the air blowing means 4, the air may be intermittently blown out by the control means (not shown). In this case, the air is blown out in a pulsed manner, and the air impacts the molded product 3 so that the molded product 3 is more effectively released from the mold. In the present invention, when the removal of the molded product 3 by dropping is completed, the molding die 1 is clamped again and the molded product is molded in the same order as above.

Next, another embodiment will be described with reference to FIGS. In this embodiment, the molding die 1 basically comprises a fixed die 6, a movable die 7, and a slide core 9 movable in a slide groove 8 of the movable die 7.
The fixed die 6 is attached to a mounting plate 11 via a runner plate 12. The movable mold 7 includes a movable mounting plate 13 and a spacing plate 1
4, the support plate 15 is attached to the ejector plate 16 and the knockout pin 2 projecting from the ejector plate 16 is provided. Here, in the embodiment shown in the accompanying drawings, the parting surface of the fixed die 6 is a flat surface, and the parting surface of the movable die 7 is provided with a recess 17 for a cavity. A slide groove 8 is provided in the movable die 7 so as to communicate with each other, and a slide core 9 is slidably fitted in the slide groove 8. Further, the tip of the knockout pin 2 can freely protrude from the bottom of the recess 17. An air blowout port 20 of an air blowing means 4'is provided in the lower part of the bottom of the slide groove 8 exposed when the slide core 9 retracts. FIG. 5 shows a mold body 21 incorporated in the movable mold 7. That is, although the recess 17 and the slide groove 8 are formed in the mold body 21, an air supply passage 22 is provided on the outer periphery of the mold body 21 and the air supply passage 22 communicates with each air outlet 20. The air hole 23 is divided into two parts, the end part of the hose 19 is connected to a part of the air supply path 22, and the hose 19 is connected to an air supply means (not shown) such as an air pump. The molded product 3 molded by the molding die 1 of the present invention is also a micro-molded product for electric equipment such as a relay card, for example, a very small molded product having a length of 0.1 g or less and a length of 10 mm or less and a weight. Is light.

Then, the molding die 1 having the above construction is molded by clamping the fixed die 6, the movable die 7 and the slide core 9 and injecting the resin into the cavity recess 17.
Next, after molding, the movable mold 7 is moved and the slide core 9 is moved to open the mold as shown in FIG. 4 (a), and then the molded product is knocked out by the knockout pin 2 as shown in FIG. 4 (b). 3 is projected and dropped by the weight of the molded product 3 as shown in FIG. Here, as shown in FIG. 4D, a part (for example, 10%) of the molded product 3 may drop and remain in the slide groove 8 opened by the movement of the slide core 9, but in the present invention, When the slide core 9 moves and the slide groove 8 is opened, as shown in FIG. 4 (e), air is blown from the groove bottom of the slide groove 8 by the air blowing means 4'to try to fall into the slide groove 8. Molded product 3
Alternatively, the molded product 3 that has fallen into the slide groove 8 is blown out of the slide groove 8 and dropped downward to be taken out. As described above, in the present invention, when the molded product 3 is ejected by the knockout pin 2 and dropped onto the molded product 3 by its own weight, the molded product 3 can be reliably ejected from the air supply means 4 '. The air to be used plays an auxiliary role in taking out the molded product 3 so that the molded product 3 can be reliably taken out from the molding die 1.

Next, FIG. 6 shows still another embodiment of the present invention. In this embodiment, in addition to the slide means 4'for blowing off the molded product 3 which enters the slide groove 8 as shown in FIG. 4, the air supply means 4 shown in the embodiment of FIG.
The feature is that it is provided in combination. According to this embodiment, when the molding die 1 is opened and the molded product 3 is dropped by the knockout pin 2, air is blown to the molded product 3 by the air blowing means 4 so that the molded product 3 is fixed by static electricity. Even if the molded product 3 is attached to the mold 6 or the movable mold 7, the molded product 3 can be taken out by dropping it so as not to be surely adhered by air, and the molded product 3 entering the slide groove 8 can be blown by air. It can be dropped by the air blown from 4 '.

[0025]

As described above, according to the first aspect of the present invention, the molding die is configured such that the molding product is pushed out from the molding die opened by the knockout pin and taken out by its own weight drop. In order to drop the molded product in the mold open state, an air blowing means for blowing air to the molded product is provided, so the molding die is opened and the molded product is pushed out by the knockout pin and dropped by its own weight. At this time, by blowing air, even if the molded product tries to adhere to the fixed mold or the movable mold due to static electricity, it can be dropped so that it does not reliably adhere to the air and the molded product can be taken out. If the molded product adheres to the mold due to static electricity when taking it out, it is not necessary to stop the mold operation and take out the molded product again. Clamping time there is no possibility of sandwiching the molded article, the molded article is deformed defective is not likely that incorporated into the molded article is non-defective.

Further, in addition to the effect of the invention described in claim 1, the invention described in claim 2 is provided with air blowing means for blowing air obliquely from above to the molded product in the mold open state. Therefore, even if a molded product is attached to the inclined surface from the upper side even if the molded product is electrostatically attached to the inclined surface when the inclined surface is provided in the lower part of the mold so that the molded product can easily drop by its own weight. The air can be surely blown onto and dropped.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 described above, since the air blowing means has a large number of nozzles arranged in parallel, the air is molded into a molding die. It is possible to flow along the parting surface of the mold, and it is possible to reliably prevent the molded product from sticking to the molding die. In addition to the effect of the invention described in claim 1, in the invention described in claim 4, since the air spraying means for spraying air in a pulse shape is provided, the air collides with the molded article in a shocking manner. Therefore, the molded product can be reliably dropped.

Further, in the invention according to claim 5, in the molding die in which the molding product is pushed out from the molding die opened with the knockout pin and taken out by its own weight drop, the fixed die and the movable die The mold is composed of the mold and the slide core that moves in the slide groove of the movable mold, and the air blowing means for blowing out the molded product that enters the slide groove is provided. When the molded product is dropped by the knockout pin, the molded product may enter the slide groove.In this case,
The molded product that enters the slide groove can be dropped by the air blown from the air blowing means.As a result, when the molded product remains in the slide groove when the molded product is taken out, the mold operation is stopped. There is no need for time and effort to take out the molded product, and there is no risk of the molded product being pinched by the slide core when the mold is clamped again, and the deformed defective product will be mixed into the good product. There is no fear.

According to the sixth aspect of the invention, in the molding die in which the molding product is pushed out from the opened molding die by the knockout pin and taken out by its own weight, the fixed die and the movable die are movable. A molding die is composed of a mold and a slide core that moves in the slide groove of the movable mold, and an air blowing means is provided to blow out a molded product that enters the slide groove, and the molded product is dropped in the mold open state. In order to blow air to the molded product for this purpose, when blowing the molding die and dropping the molded product with the knockout pin, blow the air to the molded product with the air blowing means. Even if the molded product tries to adhere to the fixed mold or the movable mold due to static electricity, it can be dropped so that it will not adhere securely with the air and the molded product can be taken out. Moreover, the molded product that enters the slide groove can be dropped by the air blown from the air blowing means, and as a result, when the molded product is taken out, the molded product tends to adhere to the mold due to static electricity, Alternatively, when the molded product remains in the slide groove, it is not necessary to stop the operation of the mold and take out the molded product, and when fixing the mold again, the fixed mold,
There is no risk of a molded product being sandwiched between a movable mold and a slide core, and there is no risk of a deformed defective molded product being mixed into a non-defective molded product.

[Brief description of drawings]

1A to 1D are explanatory views showing the sequence of taking out a molded product from a mold opening of a molding die according to an embodiment of the present invention.

FIG. 2 shows an example of a nozzle used in the present invention, (a) is a front view and (b) is a side view.

3 (a) to 3 (d) are explanatory views showing an order of taking out a molded product from a mold opening of a molding die according to another embodiment of the present invention.

4 (a) to (e) are explanatory views showing a sequence of taking out a molded product from a mold opening of a molding die according to still another embodiment of the present invention.

FIG. 5 shows a mold body provided with a slide core used in the above, (a) is a perspective view, (b) is a front view,
(C) is a side view.

6 (a) to 6 (e) are explanatory views showing the order of taking out molded products from the mold opening of the molding die of still another embodiment of the present invention.

FIG. 7 is a perspective view showing a conventional example, in which (a) is a state in which a molded product is taken out by dropping its own weight by opening the mold;
(B) is a perspective view of a state in which the mold is clamped while sandwiching the molded product.

[Explanation of symbols]

 1 Mold 2 Mold Knockout Pin 3 Molded Product 4 Air Spraying Means 4'Air Blowing Means 5 Nozzle 6 Fixed Mold 7 Movable Mold 8 Slide Groove 9 Slide Core

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[Procedure amendment]

[Submission date] July 11, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art Conventionally, a molding die 1 as shown in FIG. 7 has been known as a tool for molding a micro-molded article for electric equipment such as a relay card. In FIG. 7, 6 is a fixed mold,
Reference numeral 7 denotes a movable mold, and a plurality of recesses 17 serving as molding cavities are formed in the movable mold 7, and a surface of the fixed mold 6 facing the cavity is a flat surface. The molding die 1 is clamped and molded, and when the molding is completed, the movable mold 7
The molded product 3 is pushed out by a knock-out pin and is naturally dropped downward by the weight of the molded product 3 as shown in FIG. 7A to be taken out.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Bessho Kiyoshi 1048, Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works Co., Ltd. (72) Takao Morimoto, 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Works Co., Ltd. 72) Inventor Takuji Sawada 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd. (72) Inventor Shinji Nishikawa, 1048, Kadoma, Kadoma City Matsushita Electric Works Co., Ltd. (72) Inventor Tetsuya Inui, Osaka Prefecture 1048, Kadoma, Kadoma-shi, Matsushita Electric Works Co., Ltd.

Claims (6)

[Claims] 1. A molding die in which a molding product is pushed out by a knockout pin from a molding mold that has been opened and is taken out by its own weight drop. Air is blown to the molding product to drop the molding product in the mold open state. An apparatus for ejecting a molded product from a molding die, characterized by comprising air blowing means for 2. The device for taking out a molded product from a molding die according to claim 1, further comprising air blowing means for spraying air to the molded product obliquely from above in a mold open state. 3. The device for taking out a molded product from a molding die according to claim 1, wherein the air blowing means has a large number of nozzles arranged in parallel. 4. The device for taking out a molded product from a molding die according to claim 1, further comprising an air blowing unit for blowing air in a pulsed manner. 5. A molding die in which a molding product is pushed out from a molding die opened by a knockout pin and taken out by its own weight drop, in a fixed die, a movable die, and a slide groove of the movable die. A device for taking out a molded product from a molded mold, which comprises a movable mold and a slide core which is movable, and is provided with an air blowing means for blowing out a molded product which enters the slide groove. 6. A molding die in which a molding product is pushed out from a molding die opened by a knockout pin and is taken out by its own weight drop, in a fixed die, a movable die, and a slide groove of the movable die. A molding die is composed of a movable slide core, and an air blowing means is provided for blowing out a molded product that enters the slide groove. Separately, for blowing air to the molded product to drop the molded product in the mold open state. A device for taking out a molded product from a molding die, comprising: