CN209320219U - A secondary ejection mechanism for a mold - Google Patents

Abstract

The utility model discloses a kind of secondary ejecting mechanisms of mold, it include include push plate, moving template, support block, bottom plate, ejector retainner plate, Ejector Retainer Plate, push rod, push rod shell, push rod shell lower end is fixed on the outside of bottom plate, and upper end is fixed on the outside of moving template；The push rod is threaded through in push rod shell, and push rod upper end is stretched and is located at outside push rod shell, and is fixedly connected with push plate.It is equipped with an accommodating space at the position in the corresponding ejection space of push rod shell, is equipped with a sliding block in accommodating space, which is connected to push rod lower end；The Ejector Retainer Plate is equipped with a yielding region being connected to the accommodating space of push rod shell, and Slipper is arranged in the yielding region, and is connected between sliding block and Ejector Retainer Plate by elastic component.The utility model realizes the Double-ejection of injection mold by the cooperation between Ejector Retainer Plate, sliding block, push rod, push rod shell, and structure is simple, and stability is good, can rapidly be removed from the molds product.

Description

A secondary ejection mechanism for a mold

technical field

The utility model relates to the field of injection molds, in particular to a secondary ejection mechanism of a mold.

Background technique

The mold refers to a tool that can solidify the thermalized raw material to form a specific shape and size under the action of external force. Specifically, the mold includes a movable template and a fixed template, and there are pre-opened inner cavities on the movable template and the fixed template. The thermalized raw material is introduced into the inner cavity, and the moving platen and the fixed platen are closed so that the raw material can be extruded and solidified to form a product. When the movable platen and the fixed platen are separated, the formed product is taken out.

In general, the ejection action can be completed at one time when the product is taken out from the mold. However, due to the special shape of the product or the requirements during production, if the product is still in the cavity after one ejection, or cannot fall off automatically, it is necessary to add another ejection action, which is the second ejection. out. Secondary ejection can make the ejection process smoother. For some products that require a large ejection stroke, the use of secondary ejection can reduce the force exerted by the ejector pin during ejection and avoid product defects during ejection.

At present, the secondary ejection of the mold is mostly realized by using nylon hooks with other accessories. The structure of the nylon hooks is unstable after being heated, which easily affects the effect of the secondary ejection, and its structure is loaded and the manufacturing cost is high.

Utility model content

In view of this, the purpose of this utility model is to provide a secondary ejection mechanism of a mold, which has a stable structure and good secondary ejection effect.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A secondary ejection mechanism for an injection mold, comprising a push plate, a movable template, a mold foot, a bottom plate, a thimble plate, a thimble bottom plate, and a push rod, the push plate is arranged on the upper end surface of the movable template, and the lower end surface of the movable template A ejection space is formed between the movable formwork and the bottom plate through the connection of the mold feet to the bottom plate; the ejector plate and the ejector base plate are arranged in the ejection space, and a thimble is arranged on the ejector base plate, and the ejector pin is fixed on the ejector plate through the ejector plate The thimble bottom plate; the secondary ejection mechanism also includes a push rod casing, the lower end of the push rod casing is fixed on the outside of the bottom plate, and the upper end is fixed on the outside of the movable template; the push rod is installed in the push rod casing, and The upper end of the push rod extends outside the push rod shell and is fixedly connected with the push plate. An accommodating space is provided at the position corresponding to the ejection space of the push rod housing, and a slider is provided in the accommodating space, and the upper end surface of the slider abuts against the lower end of the push rod; The accommodating space communicates with the retreat area, the slider part is arranged in the retreat area, and the slider is connected with the base plate of the thimble through an elastic member.

The upper end of the slider is provided with a first inclined guide surface, and correspondingly, the upper end surface of the accommodating space of the push rod housing is provided with a second inclined guide surface matched with the first inclined guide surface.

The elastic member is a spring.

After adopting the above scheme, the utility model realizes the secondary ejection of the injection mold through the cooperation between the thimble bottom plate, the slider, the push rod and the push rod shell. Under the action of the ejector plate, the push plate is also ejected upward under the action of the thimble bottom plate, slider and push rod. When the slider moves to the upper end of the accommodating space of the push rod housing, the slider loses its force on the push rod, the push plate stops pushing out, and the thimble continues to push out under the action of the thimble bottom plate and the thimble plate, so that The product is released from the push plate to take out the product, thus completing the secondary ejection work. In a word, the utility model has simple structure and good stability, and can quickly take out the product from the mold.

Description of drawings

Fig. 1 is the combined structure schematic diagram of the secondary ejection mechanism of the embodiment of the present utility model;

Fig. 2 is the exploded structure schematic diagram of the secondary ejection mechanism of the embodiment of the present utility model;

Fig. 3 is a schematic structural view of the mold clamping state of the secondary ejection mechanism of an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of the first ejection of the secondary ejection mechanism of the embodiment of the present invention;

Fig. 5 is a structural schematic diagram of the second ejection of the second ejection mechanism of the embodiment of the present invention.

Detailed ways

As shown in Figure 1 and Figure 2, the utility model discloses a secondary ejection mechanism of a mold, which includes a push plate 3, a movable template 2, a mold foot 4, a bottom plate 12, a thimble plate 5, a thimble bottom plate 6, a push plate Rod 7 and push rod housing 8.

Wherein, the push plate 3 is arranged on the upper end surface of the movable template 2, and the lower end surface of the movable template 2 is connected with the base plate through the die foot 4, forming a ejection space between the movable template 2 and the base plate. The ejector pin plate 5 and the ejector pin bottom plate 6 are arranged in the ejection space. A thimble 10 is arranged on the thimble bottom plate 6, and the thimble 10 is fixed on the thimble bottom plate 6 through the thimble plate 6, and the thimble 10 can move along with the thimble bottom plate 6 and the thimble plate 5, and the upper part of the thimble 10 can be on the movable template during the movement process. 2 and push plate 3 are movable through.

The lower end of the push rod housing 8 is fixed on the outside of the base plate 12 , and the upper end is fixed on the outside of the movable template 2 . The push rod 7 is installed in the push rod housing 8 , and the upper end of the push rod 7 extends outside the push rod housing 8 and is fixedly connected with the push plate 3 . An accommodating space 81 is provided at a position corresponding to the ejection space of the push rod housing 8 , and a slider 9 is provided in the accommodating space 81 , and the upper end surface of the slider 9 abuts against the lower end of the push rod 7 . On the thimble bottom plate 6, there is a setback area 61 that communicates with the accommodation space 81 of the push rod housing 8. The slider 9 is partly arranged in the setback area 61. file connection. A first inclined guide surface 91 is provided on the upper end of the slider 9 . Correspondingly, a second inclined guide surface 82 matched with the first inclined guide surface 91 is provided on the upper end surface of the accommodating space 81 of the push rod housing 8 .

As shown in Figure 3, when the fixed platen 1 and the movable platen 2 of the injection molding machine are in the mold clamping state, the ejector base plate 6 is located on the base plate 12, the slider 9 is partially located in the retreat area 61 of the ejector base plate 6, and partly located in the push rod housing 8, and the lower end surface of the push rod 7 is pressed against the slider 9.

As shown in Figure 4, after the injection molding is completed, the product is taken out from the mold. At this time, the ejector pin of the injection molding machine pushes the ejector base plate 6, and the ejector base plate 6 drives the ejector plate 5 and the slider 9 to move upward, and the ejector pin base plate 6 and the ejector plate 5 move upward. Under the action of the thimble, the thimble 10 is ejected upwards. While the slide block 9 will push the push rod 7 during the upward movement, thereby pushing the push plate 3 to push out upwards. When the first inclined guide surface 91 of the slider 9 is in contact with the second inclined guide surface 82 of the push rod housing 8, that is, when the thimble base plate 6 completes the stroke A, the thimble base plate 6 continues to move upward, and the slider 9 will also follow the thimble. The bottom plate 6 moves upwards, and under the action of the push rod housing 8, the slider 9 will gradually enter the retreat area 61 of the thimble bottom plate 6 along the inclined guide surface, thereby losing its effect on the push rod 7, and the push plate 8 will stop ejecting .

As shown in Figure 5, after the slider 9 enters the retreat area 61, the ejector pin bottom plate 6 will still push the ejector pin 5 and the slider 9 to move upward, and then push the ejector pin 10 to continue to push upward, and the product will be gradually ejected from the push plate 3 , when the product is fully ejected from the push plate 3, the product can be taken out. That is to say, when the ejector base plate 6 completes the stroke B on the above basis, the product can be completely ejected.

The utility model realizes the secondary ejection of the injection mold through the cooperation among the thimble bottom plate 6, the slider 9, the push rod 7 and the push rod shell 8. It has a simple structure and good stability, and can quickly take out the product from the mold. .

The above is only the embodiment of the utility model, and does not limit the technical scope of the utility model in any way. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model are still valid. It belongs to the scope of the technical solution of the utility model.

Claims (3)

1. A secondary ejection mechanism of a mould, comprising a push plate, a movable template, a mold foot, a base plate, a thimble plate, a thimble bottom plate, and a push rod, the push plate is arranged on the upper end surface of the movable template, and the lower part of the movable template The end face is connected to the bottom plate through the mold foot, and an ejection space is formed between the movable template and the bottom plate; the ejector plate and the ejector base plate are arranged in the ejection space, and ejector pins are arranged on the ejector base plate, and the ejector pins are fixed by the ejector plate On the thimble bottom plate; it is characterized in that: the secondary ejection mechanism also includes a push rod casing, the lower end of the push rod casing is fixed on the outside of the bottom plate, and the upper end is fixed on the outside of the movable template; the push rod is installed on the push rod inside the rod casing, and the upper end of the push rod extends outside the push rod casing, and is fixedly connected with the push plate; a storage space is provided at the position corresponding to the ejection space of the push rod casing, and a slider is provided in the storage space. The upper end surface of the slider abuts against the lower end of the push rod; the thimble base plate is provided with a retreat area that communicates with the accommodation space of the push rod housing, and the slider part is arranged in the retreat area, and the slide block and the thimble base plate pass through Elastic connection. 2. The secondary ejection mechanism of a mold according to claim 1, characterized in that: the upper end of the slider is provided with a first inclined guide surface, correspondingly, the accommodating space of the push rod housing The upper end surface is provided with a second inclined guide surface matched with the first inclined guide surface. 3. The secondary ejection mechanism of a mold according to claim 1, wherein the elastic member is a spring.