CN218700947U

CN218700947U - Injection mold with self-dredging exhaust duct structure

Info

Publication number: CN218700947U
Application number: CN202222815949.XU
Authority: CN
Inventors: 戴伟荣; 陈恩鸿; 曾伟平
Original assignee: Zhangzhou Shengzhong Plastic Technology Co ltd
Current assignee: Zhangzhou Shengzhong Plastic Technology Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-03-24
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses an injection mold with from mediation air discharge duct structure, including last mould and lower mould, it is formed with the lug to go up the perpendicular downwardly extending of mould bottom surface, and the both sides of lug have seted up the air guide groove, the perpendicular upwards extension of lower mould top surface is formed with the die cavity, and the air discharge duct has been seted up to the lower mould wall body of die cavity both sides, is provided with the dredging rod in the air discharge duct, and is located welded connection has helical blade on the dredging rod of air discharge duct, the dredging rod other end pass from the fixed plate and with fixed plate bearing activity tussie, and fixed plate welded fastening is on the lower mould. This injection mold with from mediation air discharge duct structure is provided with the mediation pole, and in the downlink in-process of cope match-plate pattern, can drive mediation pole axial rotation automatically, overflow to the air discharge duct in and after the cooling is the waste residue as the material, the helical blade on the mediation pole passes through, can take out the waste residue in the air discharge duct, realizes dredging certainly, ensures that the exhaust is smooth and easy.

Description

Injection mold with self-dredging exhaust duct structure

Technical Field

The utility model relates to an injection mold technical field specifically is an injection mold with from mediation air discharge duct structure.

Background

In order to ensure the quality of injection products, exhaust is required to be arranged on a mold, namely, the exhaust is used for exhausting air in a mold cavity, and gas generated by materials in the heating process is exhausted, but a small amount of heated materials overflow to an exhaust groove in the exhaust process, and the exhaust groove is blocked after the materials are cooled, so that normal exhaust is influenced;

in order to solve the problem, the prior art (CN 211360608U) discloses a mold exhaust and mold, which is provided with a plurality of exhaust grooves distributed in a ladder shape, and is matched with a slag ladle, so as to avoid backflow cooling blockage, and ensure smooth exhaust, but after multiple uses, more and more waste residues are accumulated in the exhaust grooves and the slag ladle, which may cause functional failure, and further need to be cleaned frequently, so that the above-mentioned equipment can only keep smooth exhaust within a certain time, and cannot deal with long-time efficient operation, and the practicability is not strong.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold with from mediation air discharge duct structure to solve the problem that above-mentioned background art provided.

In order to achieve the above object, the utility model provides a following technical scheme: an injection mold with a self-dredging exhaust duct structure comprises an upper mold and a lower mold, wherein the bottom surface of the upper mold vertically extends downwards to form a convex block, and air guide ducts are formed in two sides of the convex block;

the top surface of the lower die extends vertically upwards to form a cavity, the lower die wall body on two sides of the cavity is provided with an exhaust groove, a dredging rod is arranged in the exhaust groove, and a helical blade is welded and connected on the dredging rod in the exhaust groove;

the other end of the dredging rod penetrates through the fixed plate and moves with the fixed plate bearing, and the fixed plate is welded and fixed on the lower die.

Furthermore, the lug is of a square structure, and the shape and the size of the cross section of the lug are consistent with those of the top surface of the cavity.

Furthermore, the air guide groove is of a semicircular arc structure in section, the end face of the exhaust groove is of a circular structure, the four air guide grooves and the four exhaust grooves are distributed in a rectangular mode, and the axial leads of the air guide groove and the exhaust groove are perpendicular to each other.

Furthermore, one end of the dredging rod is sleeved with a fixing ring welded with the dredging rod, and is also sleeved with a fixing cylinder movably connected with a bearing of the dredging rod, and the fixing ring is axially connected with a ratchet.

Furthermore, the fixed cylinder is in a conical structure, one side end face of the fixed cylinder is connected with the side face of the gear in a welding mode, and the fixed cylinder, the gear and the dredging rod share the same axial lead;

and an inner meshed ratchet wheel is welded and connected to the inner circular wall of the gear, and the inner meshed ratchet wheel is meshed with the ratchet.

Furthermore, racks are vertically welded on the bottom wall of the upper die, the four racks are distributed in a rectangular shape, and the axial direction of each rack is tangent to the excircle of the gear.

Compared with the prior art, the beneficial effects of the utility model are that: the injection mold with the self-dredging exhaust groove structure is provided with four exhaust grooves, when an upper mold and a lower mold are closed, air can be exhausted through the exhaust grooves, meanwhile, dredging rods are arranged in the exhaust grooves, and when the upper mold descends, the dredging rods can be automatically driven to axially rotate;

after the material spills over to the air discharge duct in and the cooling is the waste residue, the dredging rod can take the waste residue in the air discharge duct out through helical blade above that, realizes from the mediation, ensures that the exhaust is smooth and easy, through the continuous down of last mould for the dredging rod is along with the operation synchronous revolution, and keeps the air discharge duct internal through groove always, need not to shut down the clearance, is favorable to high-efficient operation, and the practicality is strong.

Drawings

FIG. 1 is a schematic view of the interior of the movable housing of the present invention;

FIG. 2 is a schematic view of the external top view of the movable housing of the present invention;

FIG. 3 is a schematic longitudinal sectional view of the movable housing and the fixed housing of the present invention;

FIG. 4 is a schematic view of the interior of the movable housing of the present invention;

FIG. 5 is an enlarged schematic view of point A of FIG. 5 according to the present invention;

fig. 6 is a schematic view of the structure of the fixing housing of the present invention.

In the figure: 1. an upper die; 2. a lower die; 3. a cavity; 4. an exhaust duct; 5. dredging the rod; 6. a fixing plate; 7. a bump; 8. a gas guide groove; 9. a fixing ring; 10. a ratchet; 11. an inner engaged ratchet wheel; 12. a gear; 13. a fixed cylinder; 14. a rack.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: an injection mold with a self-dredging exhaust duct structure comprises an upper mold 1 and a lower mold 2, wherein a projection 7 is formed by vertically extending the bottom surface of the upper mold 1 downwards, air guide grooves 8 are formed in two sides of the projection 7, a cavity 3 is formed by vertically extending the top surface of the lower mold 2 upwards, exhaust ducts 4 are formed in the wall body of the lower mold 2 on two sides of the cavity 3, after the upper mold 1 and the lower mold 2 are closed, molten plastic is injected into the cavity 3 for cooling and forming, in the process, air in the cavity 3 and gas generated by the molten plastic are extruded into the air guide grooves 8 and finally exhausted through the exhaust ducts 4;

a dredging rod 5 is arranged in the exhaust groove 4, a helical blade is welded and connected on the dredging rod 5 positioned in the exhaust groove 4, the other end of the dredging rod 5 penetrates through the fixing plate 6 and is in bearing activity with the fixing plate 6, the fixing plate 6 is welded and fixed on the lower die 2, the dredging rod 5 can be fixed on the fixing plate 6 and can axially rotate on the fixing plate 6, when the dredging rod 5 axially rotates, waste residues in the exhaust groove 4 can be taken away through the helical blade, the self-dredging effect in the exhaust groove 4 is realized, and smooth exhaust of the exhaust groove 4 is ensured;

because spill over to the interior plastics cooling back of air discharge duct 4, have viscidity, easily adhere on the helical blade, can increase the smoothness on helical blade surface through spraying the release agent on the helical blade for helical blade rotatory in-process, the adhesion is at the plastics waste residue on its surface and is dropped easily, the separation unloading, ensures that the mediation operation is stably gone on.

The lug 7 is the square body structure, and the cross section is unanimous with 3 top surface shape sizes of die cavity, goes up the

mould

1 and 2 compound dies backs of lower mould, and lug 7 can insert in the die cavity 3 to with the seamless laminating of 3 top lateral walls of die cavity, ensure product shaping quality like this, excellent in use effect.

Air guide groove 8 is section semicircle structure, 4 terminal surfaces of air discharge duct are circular structure, both all are that the rectangle distributes and have four, and

air guide groove

8 and 4 axial lead mutually perpendicular of air discharge duct, gas can upwards flow along air guide groove 8, discharge through 4 horizontal direction in air discharge duct at last, air discharge duct 4 and dredging rod 5 are coaxial, and the helical blade diameter on the dredging rod 5 is less than 4 internal diameters of air discharge duct, this design, when making helical blade rotatory, can not take place to scratch with air discharge duct 4, and there is the clearance between helical blade and the air discharge duct 4, the gas flow of being convenient for, and is rational in infrastructure.

As shown in fig. 5 and 6, one end of the dredging rod 5 is sleeved with a fixing ring 9 welded and connected with the dredging rod 5, and is further sleeved with a fixing cylinder 13 movably connected with a bearing of the dredging rod, the fixing ring 9 is axially connected with a ratchet 10, the fixing cylinder 13 is in a conical structure, one side end face of the fixing cylinder is welded and connected with the side face of the gear 12, the fixing cylinder 13, the gear 12 and the dredging rod 5 are coaxial, an inner meshed ratchet 11 is welded and connected to the inner wall of the gear 12, the inner meshed ratchet 11 is meshed with the ratchet 10, the fixing cylinder 13 is arranged so that the gear 12 is in a rotating structure on the dredging rod 5, the inner meshed ratchet 11 and the ratchet 10 are arranged so that the ratchet 11 can slide from the back of a tooth groove on the inner meshed ratchet 11 when the inner meshed ratchet 11 rotates counterclockwise, no meshing operation can be generated between the inner meshed ratchet 11 and the ratchet 10, namely, when the gear 12 rotates counterclockwise, the inner meshed ratchet 11 cannot drive the dredging rod 5 to rotate axially through the ratchet 10, only when the gear 12 rotates clockwise, the inner meshed ratchet 11 can push the fixing ring 9 to rotate the fixing ring 9, and the dredging rod 5 can drive the fixing ring to rotate axially, so that the dredging rod 5 to rotate only rotate in one way;

the lateral wall of the fixing ring 9 extends outwards to form a bulge, and the bulge is connected with the ratchet 10 in a welding mode through the elastic spring, so that the ratchet 10 can rotate by a certain angle in the process of sliding from the tooth socket back on the internal meshing ratchet wheel 11, the ratchet 10 can be driven to reset through the elastic force of the elastic spring and can be inserted into the tooth socket on the internal meshing ratchet wheel 11 all the time, and the internal meshing ratchet wheel 11 and the ratchet 10 are in a meshing state all the time.

The bottom wall of the upper die 1 is vertically welded with four racks 14, the racks 14 are distributed in a rectangular shape, the axial direction of the racks 14 is tangent to the excircle of the gear 12, the racks 14 can be driven to synchronously move in the process that the upper die 1 moves downwards and the lower die 2 are closed, and the racks 14 can be meshed with the gear 12 and drive the gear 12 to clockwise rotate when moving to the position of the gear 12, so that the gear 12 drives the dredging rod 5 to axially rotate through the internal meshing ratchet 11 and the ratchet 10, and the dredging rod 5 realizes self-dredging of the exhaust groove 4 through the helical blades;

when the upper die 1 moves upwards and resets, the rack 14 drives the gear 12 to rotate anticlockwise, and the dredging rod 5 cannot rotate synchronously, so that the helical blade can be prevented from rotating reversely, and when waste residues are brought into the die cavity 3.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an injection mold with from mediation air discharge duct structure, includes mould (1) and lower mould (2), its characterized in that: the bottom surface of the upper die (1) vertically extends downwards to form a convex block (7), and both sides of the convex block (7) are provided with air guide grooves (8);

the top surface of the lower die (2) vertically extends upwards to form a cavity (3), the wall bodies of the lower die (2) at two sides of the cavity (3) are provided with exhaust grooves (4), dredging rods (5) are arranged in the exhaust grooves (4), and helical blades are welded and connected on the dredging rods (5) positioned in the exhaust grooves (4);

the other end of the dredging rod (5) penetrates through the fixing plate (6) and moves together with the bearing of the fixing plate (6), and the fixing plate (6) is welded and fixed on the lower die (2).

2. The injection mold with the structure of self-dredging exhaust grooves according to claim 1, wherein: the convex block (7) is of a square structure, and the shape and the size of the cross section of the convex block are consistent with those of the top surface of the cavity (3).

3. The injection mold with the structure of self-dredging exhaust grooves according to claim 1, wherein: the air guide grooves (8) are of a section semicircular arc structure, the end faces of the exhaust grooves (4) are of a circular structure, four air guide grooves are distributed in a rectangular mode, and the axial leads of the air guide grooves (8) and the exhaust grooves (4) are perpendicular to each other.

4. The injection mold with the structure of self-dredging exhaust grooves according to claim 1, wherein: one end of the dredging rod (5) is sleeved with a fixing ring (9) which is welded with the dredging rod, and is also sleeved with a fixing cylinder (13) which is movably connected with a bearing of the dredging rod, and the fixing ring (9) is axially connected with a ratchet (10).

5. The injection mold with the structure of self-dredging exhaust grooves as claimed in claim 4, wherein: the fixed cylinder (13) is of a conical structure, one side end face of the fixed cylinder is welded with the side face of the gear (12), and the fixed cylinder (13), the gear (12) and the dredging rod (5) are coaxial;

an inner circular ratchet (11) is welded on the inner circular wall of the gear (12), and the inner circular ratchet (11) is meshed with the ratchet (10).

6. The injection mold with the structure of self-dredging exhaust grooves according to claim 5, wherein: the bottom wall of the upper die (1) is vertically welded with four racks (14), the four racks (14) are distributed in a rectangular mode, and the axial direction of the racks (14) is tangent to the excircle of the gear (12).