CN214773739U

CN214773739U - Vacuumizing structure

Info

Publication number: CN214773739U
Application number: CN202120929977.7U
Authority: CN
Inventors: 曾智; 王刚; 许召雄
Original assignee: Wuhan Yinbaoshan New Molding Technology Co ltd
Current assignee: Wuhan Yinbaoshan New Molding Technology Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-11-19
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses an evacuation structure relates to the mould field, including the lower mould, the bottom fixedly connected with aspirating hole of lower mould inner wall, the one end fixedly connected with of aspirating hole joint of bleeding, the top fixedly connected with core of lower mould, the top joint in the core outside has the sealing washer, the top of core is equipped with the die cavity. The utility model discloses a bleeder hole that sets up, the joint bleeds, the core, sealing washer and die cavity, during the use, with the evacuation apparatus with bleed articulate together, the evacuation apparatus closes before the mould compound die, during the mould compound die, before the contact of core die cavity die joint, the sealing washer on the die cavity first contact core, the evacuation apparatus is opened and is bled toward the outside through the bleeder hole and the inboard gas circuit of connection die cavity this moment, finally reach vacuum state when the die joint contacts, the mould compound die is accomplished at last, it is more smooth and easy to have played the sizing material circulation, the risk of stranded gas has been avoided, be favorable to improving the finished product surface.

Description

Vacuumizing structure

Technical Field

The utility model relates to a mould field specifically is an evacuation structure.

Background

The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate dimensions, and the injection molding is a processing method used for batch production of parts with complex shapes, in particular to a method for injecting heated and melted plastics into a mold cavity from an injection molding machine at high pressure and obtaining a formed product after cooling and solidification.

In the design stage of the injection mold, the gas trapping area is determined only by mold flow analysis, the condition that the gas trapping area is completely consistent with the actual gas trapping area cannot be guaranteed, the insert is difficult to design under the condition that the products are complicated and the gas trapping is more, the mold strength and the cooling effect are influenced by too much insert design, and in addition, the mold flow analysis cannot be carried out on the SMC mold, so the gas trapping area can only be determined by experience, the accuracy is worse, the finally illuminated result is the product quality defect, and the gas bubble, the glue deficiency, the surface smoothness is poorer and the like.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing an evacuation structure to solve the bubble that the goods produced is too much, lacks the glue easily, the relatively poor technical problem of surface finish.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an evacuation structure, includes the lower mould, the bottom fixedly connected with aspirating hole of lower mould inner wall, the one end fixedly connected with of aspirating hole joint of bleeding, the top fixedly connected with core of lower mould, the top joint in the core outside has the sealing washer, the top of core is equipped with the die cavity, the outside fixedly connected with of die cavity goes up the mould.

Through adopting above-mentioned technical scheme, through setting up, the aspirating hole, bleed the joint, the core, sealing washer and die cavity, during the use, will take out the vacuum apparatus and bleed the articulate together, the vacuum apparatus closes before the mould compound die, during the mould compound die, before the contact of core die cavity die joint, the sealing washer on the die cavity first contact core, the vacuum apparatus is opened and is bled towards the outside through the aspirating hole and the inboard gas circuit of connection die cavity this moment, finally reach vacuum state when the die joint contact, mould compound die is accomplished at last. In the process, because a vacuum environment is formed before the rubber material circulates, the rubber material circulates more smoothly, the air trapping risk is avoided, and the improvement of the surface smoothness of the product is facilitated.

The utility model discloses further set up to, be equipped with the sizing board between the cavity that the bottom at the inboard middle part of die cavity and core top middle part are constituteed, the size in the sizing board outside and the bottom at the inboard middle part of die cavity and the inboard big or small phase-match of cavity are constituteed in the middle part of the core top, and the side cut-away view's of die cavity cross-section comprises for the ladder of a set of symmetry, the side cut-away view cross-section phase-match of core side cut-away view and the side cut-away view cross-section phase-match of die cavity.

By adopting the technical scheme, the cavity and the mold core which are convenient to make form a sealed cavity, and the rubber material is convenient to extrude and form.

The utility model discloses further set up to, the quantity of sealing washer has a set ofly, the inboard joint of sealing washer has the ring groove, the quantity in ring groove has a set ofly.

Through adopting above-mentioned technical scheme, the sealing washer through setting up is favorable to preventing in having other gas entering cavity and the cavity that the core is constituteed with the gas extraction formula.

The utility model discloses further set up to, the quantity that connects of bleeding has a set ofly, a set of one end that connects that bleeds is located the lower mould, a set of one end fixedly connected with connection vestibule that connects of bleeding, extraction opening top fixedly connected with gas pocket port, the quantity of gas pocket port has a set ofly, the cross-section of extraction opening cross-section is "F" shape for empting, and the cross-section of the cross-section that a set of joint and the connection vestibule of bleeding is "Contraband" word shape.

By adopting the technical scheme, the air in the cavity formed by the cavity and the core can be effectively pumped out, and the combined design of the Contraband shape and the F shape is favorable for improving the pumping speed.

To sum up, the utility model discloses mainly have following beneficial effect: the defects of air bubbles and glue shortage of the product can be avoided; improve surface finish, etc.

1. The utility model discloses a bleed hole, the joint of bleeding, core, sealing washer and die cavity that set up, during the use, will take out the vacuum apparatus and bleed the articulate together, the vacuum apparatus closes before the mould compound die, during the mould compound die, before the contact of core die cavity die joint, the sealing washer on the die cavity contacts the core earlier, the vacuum apparatus is opened and is bled toward the outside through the gas circuit of bleed hole and connection die cavity inboard this moment, finally reaches vacuum state when the die joint contacts, and mould compound die is accomplished at last. In the process, because a vacuum environment is formed before the rubber material circulates, the rubber material circulates more smoothly, the air trapping risk is avoided, and the improvement of the surface smoothness of the product is facilitated.

Drawings

Fig. 1 is a sectional view showing a mold closing state of the present invention;

FIG. 2 is a perspective view of the lower mold of the present invention;

fig. 3 is a perspective view of the upper die section of the present invention.

In the figure: 1. a lower die; 2. an air exhaust hole; 3. an air extraction joint; 4. a core; 5. a seal ring; 6. an upper die; 7. a cavity; 8. flitch is glued to the flitch.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The following describes an embodiment of the present invention according to its overall structure.

The utility model provides a vacuum pumping structure, as shown in fig. 1-3, includes lower mould 1, the bottom fixedly connected with aspirating hole 2 of lower mould 1 inner wall, the one end fixedly connected with of aspirating hole 2 is bled and is connected 3, the top fixedly connected with core 4 of lower mould 1, and the top joint in the core 4 outside has sealing washer 5, and the top of core 4 is equipped with die cavity 7, and mould 6 is gone up to the outside fixedly connected with of die cavity 7.

Referring to fig. 1-3, a rubber plate 8 is arranged between the bottom end of the middle part of the inner side of the cavity 7 and the cavity formed by the middle part of the top end of the core 4, the size of the outer side of the rubber plate 8 is matched with the size of the inner side of the cavity formed by the bottom end of the middle part of the inner side of the cavity 7 and the middle part of the top end of the core 4, the cross section of the side cross section of the cavity 7 is formed by a group of symmetrical steps, and the cross section of the side cross section of the core 4 is matched with the cross section of the side cross section of the cavity 7.

Referring to fig. 1 and 2, there is a group of seal rings 5, and there is a group of clamp grooves clamped in the inner sides of the seal rings 5.

Referring to fig. 1, there is a group of air extraction joints 3, one group of air extraction joints 3 is located at one end of the lower die 1, one end of the group of air extraction joints 3 is fixedly connected with a connecting cavity, the top end of the air extraction hole 2 is fixedly connected with an air hole port, the number of the air hole ports is a group, the section of the section view of the air extraction hole 2 is in an inclined 'F' shape, and the section of the section view of the group of air extraction joints 3 and the connecting cavity is in a 'Contraband' shape.

The utility model discloses a theory of operation does: during the use, will take out the vacuum apparatus and link together with bleeding joint 3, take out the vacuum apparatus before the mould compound die and close, pour the sizing material to the top of core 4, will go up mould 6 card to the top of lower mould 1, during the mould compound die, before 7 die cavity parting surfaces of 4 die cavities of core contact, sealing washer 5 on the die cavity 7 contacts the core 4 earlier, take out the vacuum apparatus and open through aspirating hole 2 and connect the inboard gas circuit of die cavity and bleed toward the outside this moment, finally reach vacuum state when the die cavity contacts, mould compound die is accomplished at last. In the process, because a vacuum environment is formed before the rubber material circulates, the rubber material circulates more smoothly, the air trapping risk is avoided, and the improvement of the surface smoothness of the product is facilitated.

Although embodiments of the present invention have been shown and described, it is intended that the present embodiments be illustrative only and not limiting to the invention, and that the particular features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples, and that modifications, substitutions, variations, and the like, which are not inventive in light of the above teachings, may be made to the embodiments by those skilled in the art without departing from the principles and spirit of the present invention, but are to be construed as broadly as the following claims.

Claims

1. The utility model provides an evacuation structure, includes lower mould (1), its characterized in that: the bottom fixedly connected with aspirating hole (2) of lower mould (1) inner wall, the one end fixedly connected with of aspirating hole (2) is bled and is connected (3), the top fixedly connected with core (4) of lower mould (1), the top joint in the core (4) outside has sealing washer (5), the top of core (4) is equipped with die cavity (7), mould (6) on the outside fixedly connected with of die cavity (7).

2. An evacuation structure according to claim 1, wherein: and a glue plate (8) is arranged between the bottom end of the middle part of the inner side of the cavity (7) and the cavity formed by the middle part of the top end of the mold core (4), and the size of the outer side of the glue plate (8) is matched with the size of the inner side of the cavity formed by the bottom end of the middle part of the inner side of the cavity (7) and the middle part of the top end of the mold core (4).

3. An evacuation structure according to claim 1, wherein: the quantity of sealing washer (5) has a set ofly, the inboard joint of sealing washer (5) has the ring groove, the quantity in ring groove has a set ofly.

4. An evacuation structure according to claim 1, wherein: the number of the air exhaust connectors (3) is one group, the air exhaust connectors (3) are located at one end of the lower die (1), and one end of each air exhaust connector (3) is fixedly connected with a connecting hole cavity.

5. An evacuation structure according to claim 1, wherein: the cross section of the side sectional view of the cavity (7) is composed of a group of symmetrical steps, and the cross section of the side sectional view of the core (4) is matched with the cross section of the side sectional view of the cavity (7).

6. An evacuation structure according to claim 1, wherein: the top end of the air exhaust hole (2) is fixedly connected with an air hole port, the number of the air hole ports is one group, and the section of the cross section of the air exhaust hole (2) is in an inclined F shape.

7. An evacuation structure according to claim 1, wherein: the section of the cross section formed by the group of the air suction connectors (3) and the connecting cavity is in the shape of Contraband.