CN212948956U

CN212948956U - Hot nozzle of hot runner

Info

Publication number: CN212948956U
Application number: CN202021689112.XU
Authority: CN
Inventors: 隋邦文
Original assignee: Taizhou Huangyan Retong Precision Instrument Technology Co ltd
Current assignee: Taizhou Huangyan Retong Precision Instrument Technology Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-04-13
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses a hot runner, aiming at providing a hot nozzle of the hot runner, which adopts the technical proposal that the hot nozzle of the hot runner comprises an outer shell, an inner shell and a fastening shell, wherein a scraping mechanism and a screw mechanism are arranged inside the inner shell, the scraping mechanism comprises a honeycomb plate and a scraping knife, a round hole is arranged on the honeycomb plate, the scraping knife is propped against the outer surface of the honeycomb plate, and a motor I is arranged in the middle of the honeycomb plate; screw mechanism includes hob and blade, the upper and lower both ends of hob are provided with the spacing ring, be provided with the mouth type support on the inner wall of inner shell, the mouth type support extends to turn over and rolls up and forms mouth type spout, is provided with a plurality of springs in the mouth type spout, spring fixedly connected with stripper plate is provided with electric feeler lever on the stripper plate, is provided with electric touch multitouch on the inner wall of inner shell, is provided with the elastic component between stripper plate and the mouth type support, the hob bottom is provided with motor II, the inner shell head is provided with the through-hole, is provided with the discharge gate in the fastening shell, the utility model is suitable for a hot runner.

Description

Hot nozzle of hot runner

Technical Field

The utility model belongs to the technical field of the hot runner, refer in particular to a hot mouth of hot runner.

Background

The hot runner mold is a system which utilizes a heating device to enable the melt in the runner to be always in a molten state, has the advantages of short forming period, raw material saving, rejection rate reduction and the like compared with the traditional forming mold, the hot nozzle plays an important role in the hot runner, and is generally made of a material with high thermal conductivity, but the material with high thermal conductivity has good heat dissipation performance, if the hot nozzle is far away from the die main body, a gap is easy to generate, the melt is easy to solidify in the gap to form a cold material layer, the cold material layer is mixed with the melt and is easy to generate defects of injection lines, impurities, wire drawing and the like, if the nozzle core is directly contacted with the mould main body in a zero-to-zero way, the heat nozzle with good heat dissipation property directly transfers the heat to the mould main body, therefore, the temperature of the die main body is overhigh, the cooling is slow, the molding period is prolonged, and the defects of halo, deformation and the like can occur; and the traditional hot nozzle needs to be disassembled and dredged after being blocked, so that too much maintenance time is spent, and the working efficiency is greatly influenced.

Disclosure of Invention

To the deficiency that prior art exists, the utility model aims to provide a hot mouth of hot runner.

In order to achieve the above purpose, the utility model provides a following technical scheme: a hot nozzle of a hot runner comprises an outer shell and an inner shell, wherein a fastening shell is arranged between the outer shell and the inner shell, the outer shell is fixedly connected with the fastening shell, the head of the inner shell is positioned in the fastening shell, a sealing gasket is arranged between the head of the inner shell and the inner wall of the fastening shell, an anti-blocking device is arranged in the inner shell and comprises a scraping mechanism and a spiral mechanism, the scraping mechanism comprises a honeycomb plate and a scraping knife, a plurality of round holes are formed in the honeycomb plate, the knife edge end of the scraping knife is abutted to the outer surface of the honeycomb plate and is positioned on one side of the honeycomb plate close to the tail of the inner shell, a motor I is arranged in the middle of the honeycomb plate, and a shaft on the motor I is fixedly connected with the middle of the scraping knife; the screw mechanism comprises a screw rod and blades, the blades are fixedly connected to the screw rod, the upper end and the lower end of the screw rod are respectively provided with a limiting ring, a heating rod is arranged in the screw rod, the inner wall of the inner shell is provided with two mouth-shaped supports which are bilaterally symmetrical to each other, the mouth-shaped supports are fixedly connected with the inner wall of the inner shell, four sides of each mouth-shaped support extend inwards to be rolled to form a mouth-shaped chute, a plurality of springs are fixedly arranged in the mouth-shaped chutes, one ends of the springs, far away from the mouth-shaped chutes, are fixedly provided with extrusion plates, the extrusion plates are positioned in the mouth-shaped supports, one sides of the extrusion plates, far away from the axis, are fixedly provided with electric contact rods, two electric contact blocks are arranged on the inner wall of the inner shell, close to the mouth-shaped chutes, correspond to the upper end face and the lower end face of the electric contact rods, the extrusion plates, close to the axis, and, the elastic part is connected with the extrusion plate in an adhesive manner, the elastic part is connected with the mouth-shaped support in an adhesive manner, a support rod I is arranged between the mouth-shaped support and the limiting ring, a motor II is arranged at the bottom end of the spiral rod, a concave table is arranged on the motor II, and a support rod II for fixing the concave table is arranged between the concave table and the inner wall of the inner shell; the inner shell head is provided with a plurality of through holes penetrating through the inner shell, a discharge port penetrating through the inside of the fastening shell is arranged in the fastening shell, and the discharge port is conical and increases in sequence along the discharge direction.

By adopting the technical scheme, the inner shell is placed in the outer shell, and then the inner shell is installed and fixed through the fastening shell, wherein the fixing mode can adopt other connection such as interference fit, threaded connection and the like, a sealing gasket is arranged between the fastening shell and the inner shell, so that the melt can be prevented from flowing upwards between the inner shell and the fastening shell, and the inner diameters of the inner shell and the inner wall of the tail part of the outer shell are the same, so that the melt can be prevented from being deposited at the contact part of the inner shell and the outer; the scraping mechanism can effectively stir and mix the molten material, and the scraping cutter is abutted against the honeycomb plate, so that the molten material can be prevented from blocking the round hole; screw mechanism can prevent that the melt from piling up in the inner shell inside and causing the jam, specifically be when the melt takes place to block up, the extrusion of the melt of passing through promotes the stripper plate and outwards moves, make electric feeler lever and electric feeler block intercommunication, then motor II begins the function, the hob drives the blade and stirs the melt, make the melt circulation, and set up the heating rod in the hob, prevent the melt temperature reduction of jam and take place the solidification phenomenon, thereby effectually dredge the jam, need not demolish whole hot mouth and dredge, and the spacing ring can play fixed effect to the hob at the prerequisite that does not influence the hob pivoted, inner shell head a plurality of through-hole can further carry out the effect that the dispersion was mixed to the melt, improve the homogeneity of melt.

The utility model discloses further set up to: the head of the fastening shell is provided with a heat insulation ring, and the outer shell, the inner shell and the fastening shell are made of materials with high thermal conductivity, so that the temperature of the die main body can be prevented from rising through the heat insulation ring, the cooling is slow, and the molding period is prolonged.

The utility model discloses further set up to: the knife edge end of the scraping knife is provided with a wear-resistant layer, and the abrasion resistance between the scraping knife and the honeycomb plate is improved by arranging the wear-resistant layer due to mutual friction between the scraping knife and the honeycomb plate.

The utility model discloses further set up to: the inner wall of the limiting ring is provided with a lubricating layer, and the lubricating layer is arranged on the inner wall of the limiting ring, so that the friction force between the limiting ring and the screw rod can be reduced, the energy consumption of the motor II is reduced, and the working efficiency of the screw rod is also improved.

The utility model discloses further set up to: the inside discharge gate department that is close to of fastening shell is provided with the heating ring, the heating ring is embedded in the inside of fastening shell, through setting up the heating ring at fastening shell head, prevents that the melt from taking place to solidify when passing through the discharge gate and leading to blockking up.

Drawings

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

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view of FIG. 1 at B;

fig. 4 is an enlarged view of fig. 1C according to the present invention;

fig. 5 is an enlarged view of fig. 1D according to the present invention;

FIG. 6 is a schematic view of a partial structure of the present invention;

in the drawings: 1. a housing; 2. an inner shell; 3. fastening the shell; 4. a gasket; 5. a honeycomb panel; 6. a scraping knife; 7, a round hole; 8. a motor I; 9. a screw rod; 10. a blade; 11. a limiting ring; 12. a heating rod; 13. a mouth-shaped support; 14. a mouth-shaped chute; 15. a spring; 16. a pressing plate; 17. an electrical feeler lever; 18. an electrical contact; 19. an elastic member; 20, supporting a rod I; 21. a motor II; 22. a concave platform; 23. a support rod II; 24. a discharge port; 25. a heat insulating ring; 26, a wear resistant layer; 27. a lubricating layer; 28. a heating ring; 29 through holes.

Detailed Description

The invention is further described in the following with reference to fig. 1 to 6 in specific embodiments:

a hot nozzle of a hot runner comprises an outer shell 1 and an inner shell 2, wherein a fastening shell 3 is arranged between the outer shell 1 and the inner shell 2, the outer shell 1 is fixedly connected with the fastening shell 3, the head of the inner shell 2 is positioned in the fastening shell 3, the head of the fastening shell 3 is provided with a heat insulation ring 25, the heat insulation ring 25 is embedded into the outer surface of the head of the fastening shell 3, a sealing gasket 4 is arranged between the head of the inner shell 2 and the inner wall of the fastening shell 3, a scraping mechanism and a screw mechanism are arranged inside the inner shell 2, the scraping mechanism comprises a honeycomb plate 5 and a scraping knife 6, the honeycomb plate 5 is provided with a plurality of round holes 7, the knife edge end of the scraping knife 6 is abutted against the outer surface of the honeycomb plate 5 and positioned on one side of the honeycomb plate 5 close to the tail of the inner shell 2, the knife edge end of the scraping knife 6 is provided with a wear-resistant layer 26, a motor I8, a shaft on the motor I8 is fixedly connected with the middle of the scraping knife 6; the screw mechanism comprises a screw rod 9 and blades 10, the blades 10 are fixedly connected to the screw rod 9, the upper end and the lower end of the screw rod 9 are respectively provided with a limiting ring 11, the inner wall of the limiting ring 11 is provided with a lubricating layer 27, a heating rod 12 is arranged inside the screw rod 9, the inner wall of the inner shell 2 is provided with two mouth-shaped supports 13 which are bilaterally symmetrical to each other, the mouth-shaped supports 13 are fixedly connected with the inner wall of the inner shell 2, four sides of the mouth-shaped supports 13 extend inwards and are turned to form mouth-shaped chutes 14, a plurality of springs 15 are fixedly arranged in the mouth-shaped chutes 14, one ends, far away from the mouth-shaped chutes 14, of the springs 15 are fixedly provided with extrusion plates 16, the extrusion plates 16 are positioned in the mouth-shaped supports 13, one surface, far away from the axis, of the extrusion plates 16 is fixedly provided with an electric contact rod 17, and two electric contact blocks 18 are arranged on the inner wall, the two electric contact blocks 18 correspond to the upper end face and the lower end face of the electric contact rod 17, an elastic part 19 is arranged between one face, close to the axis, of the extrusion plate 16 and a turned edge extending from the mouth-shaped support 13, the elastic part 19 is connected with the extrusion plate 16 in an adhesive manner, the elastic part 19 is connected with the mouth-shaped support 13 in an adhesive manner, a support rod I20 is arranged between the mouth-shaped support 13 and the limiting ring 11, a motor II 21 is arranged at the bottom end of the spiral rod 9, a concave table 22 is arranged on the motor II 21, and a support rod II 23 used for fixing the concave table 22 is arranged between the concave table 22 and the inner wall of the inner shell 2; 2 heads of inner shell are provided with and run through a plurality of through-holes 29 of inner shell 2, be provided with in the fastening shell 3 and run through the inside discharge gate 2424 of fastening shell 3, discharge gate 2424 is the toper and increases along ejection of compact direction in proper order, the inside discharge gate 2424 department of being close to of fastening shell 3 is provided with heating ring 28, heating ring 28 is embedded in the inside of fastening shell 3, and above-mentioned through-hole 29 number is three, and two mouth type supports 13, bracing piece I20, spacing ring 11 three can adopt integrated into one piece also can be through the welding, and concave station 22 and bracing piece II 23 are integrated into one piece or welding, and sealed 4 is cyclic annular and be the hemisphere, is provided with the circular through-hole that runs through sealed 4 in the middle of sealed 4, and tangent in the inner wall of through-hole 29.

It can be seen from the above structure that, the inner shell 2 is placed in the outer shell 1, and then the inner shell 2 is installed and fixed through the fastening shell 3, wherein the fixing mode can adopt interference fit, threaded connection and other connections, the sealing gasket 4 is arranged between the fastening shell 3 and the inner shell 2, which can prevent the melt from flowing upwards from between the inner shell 2 and the fastening shell 3, and the inner diameters of the inner shell 2 and the inner wall of the tail part of the outer shell 1 are the same, which can prevent the melt from depositing at the contact part of the two; the scraping mechanism can effectively stir and mix the molten material, the scraping cutter 6 is abutted against the honeycomb plate 5, the molten material can be prevented from blocking the through hole 7, and the abrasion resistance between the scraping cutter 6 and the honeycomb plate 5 is improved by arranging the abrasion-resistant layer 26; the screw mechanism prevents the melt from accumulating inside the inner casing 2 and causing clogging, particularly when the melt is clogged, the extrusion plate 16 is pushed outward by the extrusion of the molten material, so that the electrical contact rod 17 communicates with the electrical contact block 18, then the motor II 21 starts to operate, the screw rod 9 drives the blade 10 to stir the molten material, so as to promote the molten material to circulate, and the heating rod 12 is arranged in the screw rod 9 to prevent the blocked melt from being solidified due to temperature reduction, thereby effectively dredging the blockage without removing the whole hot nozzle for dredging, the limit ring 11 can fix the screw rod 9 on the premise of not influencing the rotation of the screw rod 9, and the lubricating layer 27 is arranged on the inner wall of the limit ring 11, the friction force between the limiting ring 11 and the screw rod 9 can be reduced, the energy consumption of the motor II 21 is reduced, and the working efficiency of the screw rod 9 is improved; the plurality of through holes 29 at the head of the inner shell 2 can further perform the functions of dispersing and mixing the melt, thereby improving the uniformity of the melt; because the outer shell 1, the inner shell 2 and the fastening shell 3 are made of materials with high thermal conductivity, the temperature of the die main body can be prevented from rising through the heat insulation ring 25, so that the cooling is slow, and the molding period is prolonged; through setting up heating ring 28 at fastening 3 heads of shell, prevent that the melt from taking place to solidify when passing through discharge gate 24 and leading to blockking up to discharge gate 24 is the toper, increases in proper order along ejection of compact direction simultaneously, also can alleviate discharge gate 24 to a certain extent and block up because of the too much emergence of melt.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The hot nozzle of the hot runner comprises an outer shell (1) and an inner shell (2), and is characterized in that: a fastening shell (3) is arranged between the outer shell (1) and the inner shell (2), the outer shell (1) is fixedly connected with the fastening shell (3), the head part of the inner shell (2) is positioned in the fastening shell (3), a sealing gasket (4) is arranged between the head part of the inner shell (2) and the inner wall of the fastening shell (3), a scraping mechanism and a spiral mechanism are arranged in the inner shell (2), the scraping mechanism comprises a honeycomb plate (5) and a scraping knife (6), a plurality of round holes (7) are arranged on the honeycomb plate (5), the edge end of the scraping knife (6) is abutted against the outer surface of the honeycomb plate (5) and is positioned on one side of the honeycomb plate (5) close to the tail part of the inner shell (2), a motor I (8) is arranged in the middle of the honeycomb plate (5), and a shaft on the motor I (8) is fixedly connected with the middle of the scraper (6); the screw mechanism comprises a screw rod (9) and blades (10), wherein the blades (10) are fixedly connected to the screw rod (9), limiting rings (11) are arranged at the upper end and the lower end of the screw rod (9), a heating rod (12) is arranged inside the screw rod (9), two mouth-shaped supports (13) which are bilaterally symmetrical to each other are arranged on the inner wall of the inner shell (2), the mouth-shaped supports (13) are fixedly connected with the inner wall of the inner shell (2), four sides of each mouth-shaped support (13) extend inwards to form a mouth-shaped sliding groove (14), a plurality of springs (15) are fixedly arranged in the mouth-shaped sliding grooves (14), one ends, far away from the mouth-shaped sliding grooves (14), of the springs (15) are fixedly provided with extrusion plates (16), the extrusion plates (16) are located in the mouth-shaped supports (13), the extrusion plates (16) are far away from the axis center and are fixedly provided with electric contact rods (17), two electric contact blocks (18) are arranged on the inner wall of the inner shell (2) and close to the inner wall of the mouth-shaped bracket (13), the two electric contact blocks (18) correspond to the upper end surface and the lower end surface of the electric contact rod (17), an elastic piece (19) is arranged between one surface of the extrusion plate (16) close to the axis and the extending edge of the mouth-shaped bracket (13), the elastic piece (19) is bonded with the extrusion plate (16), the elastic piece (19) is bonded with the mouth-shaped bracket (13), a support rod I (20) is arranged between the mouth-shaped bracket (13) and the limit ring (11), a motor II (21) is arranged at the bottom end of the screw rod (9), a concave platform (22) is arranged on the motor II (21), a support rod II (23) used for fixing the concave table (22) is arranged between the concave table (22) and the inner wall of the inner shell (2); the head of the inner shell (2) is provided with a plurality of through holes (29) penetrating through the inner shell (2), a discharge hole (24) penetrating through the inside of the fastening shell (3) is formed in the fastening shell (3), and the discharge hole (24) is conical and increases in sequence along the discharge direction.

2. The hot runner hot nozzle as claimed in claim 1, wherein: the head of the fastening shell (3) is provided with a heat insulation ring (25), and the heat insulation ring (25) is embedded into the outer surface of the head of the fastening shell (3).

3. The hot runner hot nozzle as claimed in claim 1, wherein: the knife edge end of the scraping knife (6) is provided with a wear-resistant layer (26).

4. The hot runner hot nozzle as claimed in claim 1, wherein: and a lubricating layer (27) is arranged on the inner wall of the limiting ring (11).

5. The hot runner hot nozzle as claimed in claim 1, wherein: a heating ring (28) is arranged in the fastening shell (3) and close to the discharge hole (24), and the heating ring (28) is embedded in the fastening shell (3).