CN215791477U

CN215791477U - Air exhaust structure for mold cavity

Info

Publication number: CN215791477U
Application number: CN202122355915.2U
Authority: CN
Inventors: 唐明峰; 唐明通; 陈莲花
Original assignee: Shangrao Tongxie Precision Mould Co ltd
Current assignee: Shangrao Tongxie Precision Mould Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-02-11
Anticipated expiration: 2031-09-28

Abstract

An air exhaust structure of a mold cavity comprises a base, a lower fixed mold and an upper fixed mold, wherein the upper surface of the base is detachably connected with the lower fixed mold through a plurality of bolts, a first groove is formed in the upper surface of the lower fixed mold, the upper fixed mold is arranged on the upper surface of the lower fixed mold, a second groove is formed in the lower surface of the upper fixed mold, an air exhaust mechanism is arranged between the lower movable mold and the lower fixed mold as well as between the lower movable mold and the base, an air pipe is inserted between the lower fixed mold and the base, a sealing cover and a through hole are formed in the top end of the air pipe, the bottom end of the air pipe is connected with a hose of an air extractor through a connecting cap, when the whole mold is in a closed state, the air pipe only needs to be pushed upwards, so that the through hole is exposed in the mold cavity, air in the mold cavity can be quickly extracted by the air extractor, and the quality of a finished product is improved; through the splint that can adjust interval that set up at lower movable mould both ends for the lower movable mould can be stable fix under in the fixed mould, guarantee that whole mould can use the lower movable mould and the last movable mould of different length, application range increases.

Description

Air exhaust structure for mold cavity

Technical Field

The utility model relates to the technical field of mold production and manufacturing, in particular to a mold cavity air exhaust structure.

Background

The mold cavity is a mold term in the manufacturing industry, i.e. a part forming a product space is called a forming part (i.e. a mold whole), and a (mold) part forming the outer surface of a product is called a cavity.

Through pouring into the liquid of moulding plastics into the mould cavity, make the liquid of moulding plastics at the shaping of mould cavity through the moulding-die, until the cooling, nevertheless because go up after mould and lower mould butt joint, can have a certain amount of air between two cavities, if do not take out the air in the cavity, cause the liquid of moulding plastics to blister easily when moulding plastics, and then lead to the finished product surface unsmooth after the shaping, even inside all can lead to the cavity because of the existence of bubble.

Therefore, the air exhaust structure of the die cavity is provided, so that the purpose of more practical value is achieved.

SUMMERY OF THE UTILITY MODEL

Objects of the utility model

In order to solve the technical problems in the background art, the utility model provides a mold cavity air exhaust structure for solving the problems.

(II) technical scheme

In order to solve the problems, the utility model provides an air exhaust structure of a mold cavity, which comprises a base, a lower fixed mold and an upper fixed mold, wherein the upper surface of the base is detachably connected with the lower fixed mold through a plurality of bolts, the upper surface of the lower fixed mold is provided with a first groove, the upper surface of the lower fixed mold is provided with the upper fixed mold, the lower surface of the upper fixed mold is provided with a second groove, the lower fixed mold and the upper fixed mold are respectively positioned in the first groove and the second groove, a lower movable mold and an upper movable mold are arranged in the lower fixed mold, an air exhaust mechanism is arranged in the lower fixed mold, an air pipe of the air exhaust mechanism is inserted into the lower fixed mold, the lower movable mold and the base, a through hole is formed in the surface of the air pipe positioned in the lower movable mold, and the bottom end of the air pipe is detachably connected with a hose through a connecting cap.

Preferably, the mechanism of bleeding includes the trachea, the base all is equipped with the perforation with the central point of lower cover half and lower movable mould, the trachea is inserted and is established in three perforation, the movable mould is located the mould die cavity and is located and be equipped with No. two on the fenestrate outer lane and accomodate the groove down, tracheal top fixedly connected with seals the lid, sealed lid can be accomodate to No. two and accomodate the inslot, tracheal bottom communicates with each other and just passes through external screw thread and thread groove threaded connection with the connecting cap, the bottom and the hose fixed connection of connecting cap.

Preferably, the upper surface of the sealing cover is arc-shaped, and the arc-shaped surface of the sealing cover is in seamless butt joint with the inner wall of the die cavity of the lower movable die.

Preferably, the equal threaded connection in both ends of cover half has the lead screw, two the equal fixedly connected with splint of relative one end of lead screw, a recess inside wall of cover half and be located the outer lane that two lead screws alternate all are equipped with the groove of accomodating No. one down, and two splint can be accomodate to a corresponding groove of accomodating respectively.

Preferably, the length of the die cavity of the upper moving die is equal to that of the lower moving die, and the lower moving die can be clamped in the die cavity of the upper moving die.

The technical scheme of the utility model has the following beneficial technical effects:

1. an air exhaust mechanism is arranged between the lower movable die and the lower fixed die and between the lower movable die and the base, air pipes are inserted into the air pipes, a sealing cover and a through hole are arranged at the top ends of the air pipes, the bottom ends of the air pipes are connected with a hose of an air exhauster through a connecting cap, when the whole die is in a closed state, the air pipes only need to be pushed upwards, the through holes are exposed in a die cavity, air in the die cavity can be quickly exhausted by the air exhauster, bubbles are prevented from generating in a finished product in the injection molding process, and the quality of the finished product is improved;

2. through the splint that can adjust interval that set up at lower movable mould both ends for the lower movable mould can be stable fix under in the fixed mould, guarantee that whole mould can use the lower movable mould and the last movable mould of different length, application range increases.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a schematic structural view of the sealing cover according to the present invention.

Fig. 3 is a disassembled view of the air tube and the connecting cap according to the present invention.

Reference numerals: 1. a base; 2. a lower fixed die; 201. a first groove; 202. a first receiving groove; 3. an upper fixed die; 301. a second groove; 4. a lower moving die; 401. a second receiving groove; 5. moving the mold upwards; 6. an air extraction mechanism; 601. an air tube; 602. a sealing cover; 603. a through hole; 604. a connecting cap; 605. a hose; 7. a screw rod; 701. and (4) clamping the plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-3, the air exhaust structure for the mold cavity provided by the utility model comprises a base 1, a lower fixed mold 2 and an upper fixed mold 3, wherein the lower fixed mold 2 is detachably connected to the upper surface of the base 1 through a plurality of bolts, a first groove 201 is formed in the upper surface of the lower fixed mold 2, the upper fixed mold 3 is arranged on the upper surface of the lower fixed mold 2, a second groove 301 is formed in the lower surface of the upper fixed mold 3, the lower fixed mold 2 and the upper fixed mold 3 are respectively positioned in the first groove 201 and the second groove 301, a lower movable mold 4 and an upper movable mold 5 are arranged in the lower fixed mold 2, an air exhaust mechanism 6 is arranged in the lower fixed mold 2, an air pipe 601 of the air exhaust mechanism 6 is inserted into the lower fixed mold 2, the lower movable mold 4 and the base 1, a through hole 603 is formed in the surface of the air pipe 601 positioned in the lower movable mold 4, and the bottom end of the air pipe 601 is detachably connected with a hose 605 through a connecting cap 604.

Specifically, air exhaust mechanism 6 includes trachea 601, the central point of base 1 and lower cover half 2 and lower movable mould 4 all is equipped with the perforation, trachea 601 is inserted and is established in three perforation, lower movable mould 4 is located the mould die cavity and is located and is equipped with No. two on the fenestrate outer lane and accomodates groove 401, the sealed lid 602 of top fixedly connected with of trachea 601, sealed lid 602 can be accomodate to No. two and accomodate groove 401 in, trachea 601's bottom communicates with each other and passes through external screw thread and thread groove threaded connection with connecting cap 604, the bottom and the hose 605 fixed connection of connecting cap 604.

In this embodiment, the air pipe 601 is inserted into the through holes formed in the lower movable die 4, the lower fixed die 2 and the base 1 from top to bottom, the hose 605 connected with the air extractor is screwed with the bottom end of the air pipe 601 through the connecting cap 604, so that the hose 605 is hermetically connected with the air pipe 601, finally, the air extractor can be used for extracting air from a die cavity formed by combining the lower movable die 4 and the upper movable die 5, air is extracted from the through hole 603 on the surface of the air pipe 601, after the air extraction is finished, the air pipe 601 is directly pulled down, so that the sealing cover 602 is tightly attached to the second accommodating groove 401, and injection molding can be performed.

Specifically, the upper surface of the sealing cover 602 is arc-shaped, and the arc-shaped surface of the sealing cover 602 is in seamless butt joint with the inner wall of the mold cavity of the lower moving mold 4.

In this embodiment, avoid influencing the shaping of product, cause the outward appearance rough uneven.

Concretely, the equal threaded connection in both ends of lower cover half 2 has lead screw 7, two the equal fixedly connected with splint 701 of the relative one end of lead screw 7, a recess 201 inside wall of lower cover half 2 and be located and all be equipped with the groove 202 of accomodating No. one on the outer lane that two lead screws 7 alternate, and two splint 701 can accomodate respectively to a corresponding in the groove 202 of accomodating.

In the present embodiment, the distance between the two clamping plates 701 can be adjusted according to the length of the lower moving die 4, so that the lower moving die 4 and the upper moving die 5 with different lengths can be used for the whole die.

Specifically, the length of the mold cavity of the upper movable mold 5 is equal to the length of the lower movable mold 4, and the lower movable mold 4 can be clamped in the mold cavity of the upper movable mold 5.

In this embodiment, after the lower movable die 4 is clamped and fixed by the two screw rods 7, in order to match the upper movable die 5 with the lower movable die 4, and the two sides of the upper fixed die 3 are not provided with clamping mechanisms, it is required to ensure that the length of the die cavity of the upper movable die 5 is exactly equal to the length of the lower movable die 4, so that the upper movable die 5 can be sleeved on the lower movable die 4, and the lower movable die 4 is fixed and the upper movable die 5 is also fixed on the surface.

The working principle of the utility model is as follows: placing a lower movable die 4 in a first groove 201 arranged in a lower fixed die 2, rotating two screw rods 7 according to the length of the lower movable die 4 to enable two clamp plates 701 to clamp the lower movable die 4 and ensure that the lower movable die 4 is arranged in the middle of the first groove 201, inserting an air pipe 601 into through holes arranged in the lower movable die 4, the lower fixed die 2 and a base 1 from top to bottom, screwing a hose 605 connected with an air pump to the bottom end of the air pipe 601 through a connecting cap 604 to enable the hose 605 to be hermetically connected with the air pipe 601, sleeving an upper movable die 5 matched with the lower movable die 4 on the lower movable die 4, finally pressing the upper fixed die 3 downwards, when air extraction is needed, firstly pushing the air pipe 601 upwards to enable a through hole 603 to be exposed in a die cavity, then extracting air from the die cavity formed by combining the lower movable die 4 and the upper movable die 5 through the air pump, and after air extraction is finished, the air pipe 601 is pulled down directly, so that the sealing cover 602 is tightly attached in the second accommodating groove 401, and injection molding can be carried out.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A die cavity air exhaust structure comprises a base (1), a lower fixed die (2) and an upper fixed die (3), wherein the upper surface of the base (1) is detachably connected with the lower fixed die (2) through a plurality of bolts, the upper surface of the lower fixed die (2) is provided with a groove (201), the upper surface of the lower fixed die (2) is provided with the upper fixed die (3), the lower surface of the upper fixed die (3) is provided with a groove (301) II, the lower fixed die (2) and the upper fixed die (3) are respectively arranged in the groove (201) I and the groove (301) II and are provided with a lower movable die (4) and an upper movable die (5), the air exhaust structure is characterized in that an air exhaust mechanism (6) is arranged in the lower fixed die (2), an air pipe (601) of the air exhaust mechanism (6) is inserted in the lower movable die (4) and the lower fixed die (2) and the base (1), and a through hole (603) is arranged on the surface of the air pipe (601) in the lower movable die (4), the bottom end of the air pipe (601) is detachably connected with the hose (605) through a connecting cap (604).

2. The air exhaust structure of the mold cavity according to claim 1, wherein the air exhaust mechanism (6) comprises an air pipe (601), the base (1), the lower fixed mold (2) and the lower movable mold (4) are provided with through holes at the central points, the air pipe (601) is inserted into the three through holes, the lower movable mold (4) is positioned in the mold cavity and provided with a second accommodating groove (401) on the outer ring of the through holes, the top end of the air pipe (601) is fixedly connected with a sealing cover (602), the sealing cover (602) can be accommodated into the second accommodating groove (401), the bottom end of the air pipe (601) is communicated with a connecting cap (604) and is in threaded connection with the threaded groove through an external thread, and the bottom end of the connecting cap (604) is fixedly connected with a hose (605).

3. The air exhaust structure for the mold cavity according to claim 2, wherein the upper surface of the sealing cover (602) is arc-shaped, and the arc-shaped surface of the sealing cover (602) is in seamless butt joint with the inner wall of the mold cavity of the lower moving mold (4).

4. The air exhaust structure for the mold cavity according to claim 1, wherein two ends of the lower fixed mold (2) are both connected with screw rods (7) in a threaded manner, two opposite ends of the screw rods (7) are both fixedly connected with clamping plates (701), a first accommodating groove (202) is formed in the inner side wall of the first groove (201) of the lower fixed mold (2) and positioned on an outer ring where the two screw rods (7) penetrate, and the two clamping plates (701) can be respectively accommodated in the corresponding first accommodating grooves (202).

5. The suction structure for the mold cavity according to claim 1, wherein the length of the mold cavity of the upper movable mold (5) is equal to the length of the lower movable mold (4), and the lower movable mold (4) can be clamped in the mold cavity of the upper movable mold (5).