CN220681390U - Device for exhausting air in cavity - Google Patents
Device for exhausting air in cavity Download PDFInfo
- Publication number
- CN220681390U CN220681390U CN202322017768.7U CN202322017768U CN220681390U CN 220681390 U CN220681390 U CN 220681390U CN 202322017768 U CN202322017768 U CN 202322017768U CN 220681390 U CN220681390 U CN 220681390U
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- die
- cavity
- pouring
- air
- movable die
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- 230000008093 supporting effect Effects 0.000 claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 22
- 238000001746 injection moulding Methods 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 description 11
- 238000005192 partition Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012768 molten material Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a device for exhausting air in a cavity, which relates to the technical field of dies and comprises a die body, a first hydraulic cylinder, a pouring feeding structure and an exhausting structure; the die body consists of a movable die and a fixed die, and matched cavities are formed in the movable die and the fixed die; the first hydraulic cylinder is fixedly arranged above the movable die; a boom is fixedly arranged at the piston end of the first hydraulic cylinder; the pouring feeding structure comprises a pouring pipe, a supporting ring and a hopper; the pouring pipe movably penetrates through the movable die and extends into the cavities of the movable die and the fixed die. According to the utility model, the pouring feeding structure adds pouring materials into the cavity in a lifting mode from low to high, so that the feeding mode can reduce the contact with air in the cavity and reduce the generation rate of bubbles; the exhaust structure can extract the residual air in the cavity in one direction so as to ensure that the cavity is in a relative vacuum state, further reduce the generation rate of bubbles and ensure the molding quality of injection molding products.
Description
Technical Field
The utility model relates to the technical field of dies, in particular to a device for exhausting air in a die cavity.
Background
The injection mold is a tool for producing plastic products; is also a tool for endowing plastic products with complete structure and precise dimensions. Injection molding is a process used in mass production of parts of complex shape.
At present, when producing injection molding products, the molten material is directly injected into the injection mold through the pouring opening, and the air in the mold cavity is easily wrapped by the molten material falling from a high place, so that air bubbles appear, and the air bubbles easily influence the molding quality of the injection molding products.
Disclosure of Invention
The utility model aims to provide a device for exhausting air in a cavity, which solves the technical problems that when an injection molding product is produced, molten materials are directly injected into an injection mold through a pouring opening, air in the cavity of the mold is easily wrapped by the molten materials falling from a high place, so that air bubbles are generated, and the air bubbles easily influence the molding quality of the injection molding product.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the utility model relates to a device for exhausting air in a cavity, which comprises a die body, wherein the die body consists of a movable die and a fixed die, and matched cavities are formed in the movable die and the fixed die;
further comprises:
the first hydraulic cylinder is fixedly erected above the movable die; a boom is fixedly arranged at the piston end of the first hydraulic cylinder;
the pouring feeding structure is arranged on the die body; the pouring feeding structure comprises a pouring pipe penetrating through the movable die, a supporting ring fixedly arranged on the outer circumferential wall of the pouring pipe and arranged at the top of the movable die, and a hopper fixedly arranged at the top of the pouring pipe; the pouring pipe movably penetrates through the movable die and extends into the cavities of the movable die and the fixed die;
the support ring arranged on the pouring pipe is fixedly arranged at one end of the suspender; and
the exhaust structure is arranged on the movable mould and communicated with the cavity; the exhaust structure is connected with the suspender and is used for extracting air in the cavities of the movable die and the fixed die.
Further, the inner bottom of the pouring pipe is fixedly connected with a dividing net.
Further, the exhaust structure comprises a gas one-way valve fixedly penetrating through the movable die, an exhaust pipe fixedly installed on the gas one-way valve, an exhaust piston slidingly connected in the exhaust pipe and a piston rod fixedly installed on the top of the exhaust piston;
the air inlet end of the air one-way valve corresponds to the cavity of the movable die;
the top of the piston rod is fixedly arranged at the other end of the suspender.
Further, a bracket is fixedly connected between the first hydraulic cylinder and the movable die.
Further, a second hydraulic cylinder for providing mold opening and closing power is arranged at the top of the movable mold.
Further, the corner of fixed mould upper edge is fixed mounting has the reference column, the corner of movable mould lower edge is provided with the locating hole that is used for the movable grafting of reference column.
Compared with the prior art, the utility model has the beneficial effects that:
in the method, the pouring feeding structure is arranged and matched with lifting capacity provided by the first hydraulic cylinder, the pouring feeding structure comprises a pouring pipe, the discharging end of the pouring pipe can be used for adding pouring materials into the cavity in a lifting mode from low to high at the inner bottom of the cavity, and thus the contact with air in the cavity can be reduced in a feeding mode, and the generation rate of bubbles is reduced; meanwhile, through the partition net arranged in the pouring pipe, the effect of dividing bubbles can be realized when pouring materials in the pouring pipe are injected into the cavity through the partition net, so that the bubbles of the pouring materials are conveniently eliminated, and the molding quality of injection molding products is guaranteed.
In this application, through setting up exhaust structure, the lifting capacity that its first pneumatic cylinder provided can realize extracting work, when pouring the feeding structure to pouring the material in the die cavity, exhaust structure can one-way extraction die cavity in remaining air to be in relative vacuum state in the assurance die cavity, further reduction bubble's production rate, the shaping quality of guarantee injection molding product.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 shows a split view of fig. 1.
Fig. 3 shows a cross-sectional view of fig. 1.
1. A movable mold; 2. setting a mold; 3. a cavity; 4. a first hydraulic cylinder; 5. a boom; 6. pouring a feeding structure; 61. pouring a pipe; 62. a backing ring; 63. a hopper; 7. an exhaust structure; 71. a gas check valve; 72. an exhaust pipe; 73. an air extraction piston; 74. a piston rod; 8. a bracket; 9. dividing the net; 10. a second hydraulic cylinder; 11. positioning columns; 12. and positioning holes.
The foregoing general description of the utility model will be described in further detail with reference to the drawings and detailed description.
Description of the embodiments
The present utility model will be described in detail with reference to the accompanying drawings.
The embodiment provides a device for exhausting air in a cavity, which comprises a die body;
the die body consists of a movable die 1 and a fixed die 2, and a matched cavity 3 is formed in the movable die 1 and the fixed die 2; the cavity 3 is used for molding an injection molding product;
the top of the movable mould 1 is provided with a second hydraulic cylinder 10 for providing mould opening power; the second hydraulic cylinder 10 in the present application can be fixed on a mounting surface, and can control the movable mold 1 and the fixed mold 2 to perform mold opening and closing actions;
a positioning column 11 is fixedly arranged at the corner of the upper edge of the fixed die 2, and a positioning hole 12 for movably inserting the positioning column 11 is arranged at the corner of the lower edge of the movable die 1; through the cooperation of spliced connection of reference column 11 and locating hole 12, can ensure the precision and the compactness of movable mould 1 and fixed mould 2 compound die.
The device for exhausting the air in the cavity further comprises a first hydraulic cylinder 4, a pouring feeding structure 6 and an exhaust structure 7;
the first hydraulic cylinder 4 is fixedly erected above the movable die 1; a boom 5 is fixedly arranged at the piston end of the first hydraulic cylinder 4; the suspender 5 is Z-shaped, so that the height difference design can cater for the height difference of the pouring feeding structure 6 and the exhaust structure 7 to synchronously lift;
a bracket 8 is fixedly connected between the first hydraulic cylinder 4 and the movable die 1; the bracket 8 is used for fixedly erecting the position of the first hydraulic cylinder 4;
referring to fig. 3 in combination, a pouring feed structure 6 is provided on the mould body; the pouring feeding structure 6 comprises a pouring pipe 61 penetrating through the movable mould 1, a supporting ring 62 fixedly arranged on the outer circumferential wall of the pouring pipe 61 and arranged at the top of the movable mould 1, and a hopper 63 fixedly arranged at the top of the pouring pipe 61; the pouring pipe 61 penetrates through the movable mould 1 actively and extends into the cavities 3 of the movable mould 1 and the fixed mould 2; casting tube 61 is used for circulating casting material; the supporting ring 62 can provide a certain supporting property for the pouring pipe 61 on the movable mould 1;
the supporting ring 62 arranged on the pouring pipe 61 is fixedly arranged at one end of the suspender 5; the hanger rod 5 can conveniently lift and lower the pouring pipe 61 to move vertically;
the inner bottom of the pouring pipe 61 is fixedly connected with a dividing net 9; the partition net 9 can be used for finely dividing the casting material so as to achieve the effect of dividing bubbles in the casting material;
in this embodiment, after the movable mold 1 and the fixed mold 2 are closed, the bottom end of the pouring tube 61 is located at the inner bottom position of the cavity 3 of the fixed mold 2, when pouring material is fed into the pouring tube 61 through the hopper 63, the pouring material can be poured into the cavity 3 of the fixed mold 2 through the bottom end of the pouring tube 61, and when the pouring tube 61 is lifted by the boom 5 driven by the first hydraulic cylinder 4 to act, the pouring material can be continuously added into the lifting pouring tube 61, so that the pouring material can gradually pour upwards in the cavities 3 of the movable mold 1 and the fixed mold 2, the contact with air in the cavities can be reduced by adopting a feeding mode, and the generation rate of bubbles can be reduced;
with continued reference to fig. 3, the exhaust structure 7 is disposed on the movable mold 1 and is communicated with the cavity; the exhaust structure 7 is connected with the suspension rod 5, and the exhaust structure 7 is used for exhausting air in the cavities 3 of the movable mold 1 and the fixed mold 2; the exhaust structure 7 comprises a gas one-way valve 71 fixedly penetrating through the movable die 1, an exhaust pipe 72 fixedly arranged on the gas one-way valve 71, an exhaust piston 73 slidingly connected in the exhaust pipe 72 and a piston rod 74 fixedly arranged on the top of the exhaust piston 73; when the air extraction piston 73 moves upwards in the air extraction pipe 72, a negative pressure state can be formed based on the space at the bottom of the air extraction piston 73, namely, air in the cavity 3 is sucked into the air extraction pipe 72;
the air inlet end of the air check valve 71 corresponds to the cavity 3 of the movable mould 1; the gas one-way valve 71 can realize one-way exhaust effect on the air in the cavity 3;
the top of the piston rod 74 is fixedly arranged at the other end of the suspension rod 5;
in this embodiment, when the boom 5 drives the pouring tube 61 to move upwards, the pouring material is in the process of filling into the cavity 3 at this time, the boom 5 can drive the piston rod 74 to rise under the lifting of the first hydraulic cylinder 4, and under the unidirectional exhaust of the air in the cavity 3 by the air check valve 71, the air suction piston 73 moves upwards in the air suction tube 72, so that the space at the bottom of the air suction piston 73, namely, the air suction tube 72, forms a negative pressure state, and at this time, the air in the cavity 3 can be sucked into the air suction tube 72, so that the cavity 3 reaches a relative vacuum state after filling the pouring material, and the generation rate of bubbles can be further reduced.
The use principle of the device for exhausting air in the cavity of the embodiment is as follows: firstly, the movable mould 1 is driven to be clamped on the fixed mould 2 through the second hydraulic cylinder 10, at the moment, the bottom end of the pouring pipe 61 is positioned at the inner bottom position of the cavity 3 of the fixed mould 2, when pouring materials are fed into the pouring pipe 61 through the hopper 63, the pouring materials can be poured into the cavity 3 of the fixed mould 2 through the bottom end of the pouring pipe 61, the partition net 9 can simultaneously finely partition the pouring materials in the pouring pipe 61 so as to achieve the effect of partitioning bubbles in the pouring materials, and then when the first hydraulic cylinder 4 drives the boom 5 to lift the pouring pipe 61 to act, pouring materials can be continuously added into the ascending pouring pipe 61 at the moment, the pouring materials can gradually pour upwards in the cavities 3 of the movable mould 1 and the fixed mould 2, so that the contact between the feeding materials and air in the cavities can be reduced, and the generation rate of bubbles can be reduced; meanwhile, under the lifting of the first hydraulic cylinder 4, the boom 5 can drive the piston rod 74 to ascend, and under the unidirectional exhaust of the air in the cavity 3 by the air check valve 71, the upward movement of the air extraction piston 73 in the air extraction pipe 72 can enable the space at the bottom of the air extraction piston 73, namely, the air extraction pipe 72, to form a negative pressure state, at the moment, the air in the cavity 3 can be sucked into the air extraction pipe 72, so that the cavity 3 reaches a relative vacuum state after pouring materials are filled, and the generation rate of air bubbles can be further reduced.
Claims (6)
1. The device for exhausting air in the cavity comprises a die body, wherein the die body consists of a movable die (1) and a fixed die (2), and a matched cavity (3) is formed in the movable die (1) and the fixed die (2);
characterized by further comprising:
a first hydraulic cylinder (4) fixedly mounted above the movable mold (1); a boom (5) is fixedly arranged at the piston end of the first hydraulic cylinder (4);
a pouring feed structure (6) arranged on the mould body; the pouring feeding structure (6) comprises a pouring pipe (61) penetrating through the movable die (1), a supporting ring (62) fixedly arranged on the outer circumferential wall of the pouring pipe (61) and arranged at the top of the movable die (1) and a hopper (63) fixedly arranged at the top of the pouring pipe (61); the pouring pipe (61) penetrates through the movable die (1) actively and extends into the die cavities (3) of the movable die (1) and the fixed die (2);
the supporting ring (62) arranged on the pouring pipe (61) is fixedly arranged at one end of the suspender (5); and
an exhaust structure (7) which is arranged on the movable mould (1) and is communicated with the cavity; the exhaust structure (7) is connected with the hanging rod (5), and the exhaust structure (7) is used for exhausting air in the cavity (3) of the movable die (1) and the fixed die (2).
2. A device for exhausting air in a mould cavity according to claim 1, characterized in that the inner bottom of the pouring tube (61) is fixedly connected with a dividing net (9).
3. The device for exhausting air in a cavity according to claim 1, wherein the air exhausting structure (7) comprises a gas check valve (71) fixedly penetrating through the movable die (1), an air exhaust pipe (72) fixedly installed on the gas check valve (71), an air exhaust piston (73) slidingly connected in the air exhaust pipe (72) and a piston rod (74) fixedly installed on the top of the air exhaust piston (73);
the air inlet end of the air one-way valve (71) corresponds to the cavity (3) of the movable die (1);
the top of the piston rod (74) is fixedly arranged at the other end of the suspender (5).
4. The device for exhausting air in a cavity according to claim 1, wherein a bracket (8) is fixedly connected between the first hydraulic cylinder (4) and the movable die (1).
5. The device for exhausting air in a cavity according to claim 1, wherein a second hydraulic cylinder (10) for providing mold opening and closing power is arranged at the top of the movable mold (1).
6. The device for exhausting air in the cavity according to claim 1, wherein a positioning column (11) is fixedly arranged at the corner of the upper edge of the fixed die (2), and a positioning hole (12) for movably inserting the positioning column (11) is arranged at the corner of the lower edge of the movable die (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322017768.7U CN220681390U (en) | 2023-07-31 | 2023-07-31 | Device for exhausting air in cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322017768.7U CN220681390U (en) | 2023-07-31 | 2023-07-31 | Device for exhausting air in cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220681390U true CN220681390U (en) | 2024-03-29 |
Family
ID=90408935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322017768.7U Active CN220681390U (en) | 2023-07-31 | 2023-07-31 | Device for exhausting air in cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220681390U (en) |
-
2023
- 2023-07-31 CN CN202322017768.7U patent/CN220681390U/en active Active
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