CN209937604U

CN209937604U - Injection molding machine injection molding mechanism with fast temperature rise

Info

Publication number: CN209937604U
Application number: CN201920414496.5U
Authority: CN
Inventors: 林燕灿
Original assignee: Xiamen Yangda Industry And Trade Co Ltd
Current assignee: Xiamen Yangda Industry And Trade Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-01-14
Anticipated expiration: 2029-03-29

Abstract

The utility model provides an injection molding machine injection molding mechanism with fast temperature rise, which comprises a slide seat, a charging barrel horizontally arranged on the slide seat, a material extruding screw rod rotationally connected in the charging barrel, and a motor arranged at the tail end of the charging barrel and in transmission connection with the material extruding screw rod; the front end of the charging barrel is provided with a spray head, the upper wall of the tail end of the charging barrel is provided with a feed hopper, and the wall of the charging barrel is internally provided with an oil injection cavity which is coaxial with the charging barrel; a guide plate is arranged in the oil injection cavity; an oil return port communicated with the oil injection cavity is formed in the side wall of the lower part, close to the tail end, of the charging barrel, and an oil inlet is formed in the side wall of the lower part, close to the front end, of the charging barrel; and the sliding seat is also provided with a hot oil supply device for supplying hot oil to the oil injection cavity. The utility model discloses the during operation, the feed cylinder is heated evenly, and it is fast to heat up.

Description

Injection molding machine injection molding mechanism with fast temperature rise

Technical Field

The utility model relates to a mechanism technical field moulds plastics, especially relates to a quick injection molding machine mechanism of moulding plastics heaies up.

Background

Injection molding is the most efficient method of forming plastic, and injection molding machines are very important in plastic forming machines. China is the largest global injection molding machine producing country, and the yield accounts for more than 70% of the annual yield of the world. An injection molding machine is a molding device for making thermoplastic plastics or thermosetting plastics into various required shapes by utilizing a molding die and keeping the original material performance of plastic products. The important components of the injection molding machine are injection molding mechanisms, and the injection molding mechanisms of different injection molding machines are different:

for example, the utility model with the patent number of CN207657077U provides an injection molding machine for producing fuse box clips, which comprises a fixed seat, a discharge pipe, an electric heating ring, a feed inlet, a feed screw, a motor and a spray head, wherein the discharge pipe is horizontally arranged on the fixed seat; the feeding screw rod is arranged in the discharge pipe, and the left end of the feeding screw rod is connected with a main shaft of the motor; the feeding hole is formed in the discharging pipe; the electric heating coil is arranged on the outer pipe wall of the discharge pipe; and a filtering mechanism is also arranged between the discharge end of the discharge pipe and the spray head. The utility model discloses can filter the material that gets into the shower nozzle to prevent not melting the material and block up the shower nozzle.

Although above-mentioned scheme can utilize the electric heat circle to heat the intensification to discharging pipe (feed cylinder), its intensification effect is general, because the electric heat circle is rigid, and set up one section distance at every interval when setting up on the discharging pipe, so, just can have the interval between two adjacent electric heat circles, and can know by the heat-conduction principle, it is higher with discharging pipe lateral wall of electric heat circle direct contact to be heated, so just can appear the discharging pipe lateral wall intensification of direct contact electric heat circle department fast, the discharging pipe lateral wall intensification of interval section is slow between two electric heat circles, and from this appear whole discharging pipe and be heated inhomogeneous problem, thereby the intensification effect of discharging pipe has been influenced greatly.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a mechanism is moulded plastics to quick injection molding machine heaies up.

In order to solve the technical problem, the technical scheme of the utility model is that:

an injection molding machine injection molding mechanism with fast temperature rise comprises a sliding seat, a charging barrel horizontally arranged on the sliding seat, an extrusion screw rod rotatably connected in the charging barrel, and a motor arranged at the tail end of the charging barrel and in transmission connection with the extrusion screw rod; the front end of the charging barrel is provided with a spray head, the upper wall of the tail end of the charging barrel is provided with a feed hopper, and the wall of the charging barrel is internally provided with an oil injection cavity which is coaxial with the charging barrel; a guide plate is arranged in the oil injection cavity; an oil return port communicated with the oil injection cavity is formed in the side wall of the lower part, close to the tail end, of the charging barrel, and an oil inlet is formed in the side wall of the lower part, close to the front end, of the charging barrel; and the sliding seat is also provided with a hot oil supply device for supplying hot oil to the oil injection cavity.

Preferably, the guide plate is of a spiral blade-shaped structure, and the guide plate is fixedly installed in the oil injection cavity and is coaxially arranged with the oil injection cavity.

Preferably, the supply device comprises an oil tank fixedly arranged on the sliding seat, a heating assembly arranged in the oil tank and an oil pump fixedly arranged on the sliding seat; the upper part of the oil pipe is communicated with the oil return port through an oil return pipe; the oil inlet end of the oil pump extends into the bottom in the oil tank, and the oil outlet end of the oil pump is communicated with the oil inlet through an oil inlet pipe.

Preferably, the heating assembly comprises a plurality of electric heating pipes fixedly arranged at the bottom in the oil tank and electric heating rings arranged on the inner side wall of the oil tank.

Preferably, the upper end of the oil tank is open, and a pressure relief assembly is arranged on the upper end opening of the oil tank; the pressure relief assembly comprises a cover plate which is arranged at the upper end of the oil tank through an elastic piece cover and covers the opening at the upper end of the oil tank, and the cover plate is always kept pressed on the opening at the upper end of the oil tank through the elastic piece.

Preferably, the elastic part comprises a fixed strip fixedly arranged on the inner side wall of the upper end of the oil tank, a movable rod vertically movably arranged on the fixed strip in a penetrating manner, a bottom plate fixedly arranged at the lower end of the movable rod, and a spring which is sleeved on the movable rod and is abutted to the bottom plate and the fixed strip at two ends respectively, wherein the upper end of the movable rod is fixedly connected with the cover plate.

Compare prior art, the utility model has the advantages that:

the utility model discloses a set up the oiling chamber on the inner wall of feed cylinder, set up the hot oil feeding device who supplies with hot oil to the oiling intracavity simultaneously, so during operation, hot oil just can be full of in the oiling intracavity, thereby make the lateral wall that the oiling chamber is close to screw rod one side can both contact with hot oil, the heat of hot oil can be for the raw materials heating in the feed cylinder is transmitted through the feed cylinder wall, so just greatly increased the area of hot oil conduction heat, and hot oil is mobile at the oiling intracavity, thereby make hot oil more even to the heat transfer of feed cylinder, from this alright accelerate the rate of rise in temperature in the feed cylinder.

2 the utility model provides a what the guide plate adopted is the helical blade structure, so the guide plate of helical blade form just forms a helical coiled passage who encircles the feed cylinder in the oiling intracavity, and hot oil flows along this helical coiled passage, so be equivalent to increased the circulation distance of hot oil to the heat time of feed cylinder has been improved.

The utility model discloses be equipped with the pressure release subassembly at the top of oil tank, so when the oil tank internal gas pressure is too big, then can automatic pressure release to prevent the problem that the inside atmospheric pressure of oil tank is too big oil tank bursts.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the cartridge;

fig. 3 is a schematic view of the internal structure of the oil tank.

Reference numerals: 1. a slide base; 2. a charging barrel; 21. a spray head; 22. a feed hopper; 23. an oil injection cavity; 24. an oil return port; 25. an oil inlet; 26. a baffle; 3. extruding a screw rod; 4. a motor; 5. a hot oil supply; 51. an oil tank; 52. a heating assembly; 521. an electric heating tube; 522. an electric heating coil; 53. an oil pump; 54. an oil return pipe; 55. an oil inlet pipe; 6. a pressure relief assembly; 61. a cover plate; 62. an elastic member; 621. a fixing strip; 622. a movable rod; 623. a base plate; 624. a spring.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

Example (b):

referring to fig. 1 and fig. 2, the injection molding mechanism of an injection molding machine with fast temperature rise provided in the present embodiment includes a sliding base 1, a material barrel 2 horizontally installed on the sliding base 1, an extrusion screw 3 rotatably connected in the material barrel 2, and a motor 4 installed at the tail end of the material barrel 2 and in transmission connection with the extrusion screw 3; wherein the front end of the charging barrel 2 is provided with a spray head 21, the upper wall of the tail end of the charging barrel 2 is provided with a feed hopper 22, and the wall of the charging barrel 2 is internally provided with an oil injection cavity 23 which is coaxial with the charging barrel 2; a guide plate 26 is arranged in the oil injection cavity 23; wherein, an oil return port 24 communicated with the oil injection cavity 23 is arranged on the side wall of the lower part of the charging barrel 2 close to the tail end, and an oil inlet 25 is arranged on the side wall of the lower part of the charging barrel 2 close to the front end; the sliding base 1 is also provided with a hot oil supply device 5 for supplying hot oil into the oil injection cavity 23. In this way, the hot oil supply device 5 guides hot oil from the oil inlet 25 into the oil injection cavity 23, the hot oil flows in the oil injection cavity 23 and finally returns to the device of the hot oil supply device 5 from the oil return port 24 to be reheated, so that the hot oil is always continuously injected into the oil injection cavity 23.

In order to improve the heating effect, the deflector 26 is a helical blade-shaped structure, and the deflector 26 is fixedly installed in the oil injection cavity 23 and is coaxial with the oil injection cavity 23. The helical guide 26 forms a helical channel around the cylinder 2 in the oil filling chamber 23, along which the hot oil flows, which corresponds to an increased distance for the hot oil to flow through, thus increasing the heating time of the cylinder 2 by the hot oil

As shown in fig. 3, the hot oil supply device includes an oil tank 51 fixedly installed on the slide carriage 1, a heating unit 52 disposed in the oil tank 51, and an oil pump 53 fixedly installed on the slide carriage 1; wherein the upper part of the oil pipe is communicated with the oil return port 24 through an oil return pipe 54; the oil inlet end of the oil pump 53 extends into the bottom of the oil tank 51, and the oil outlet end of the oil pump 53 is communicated with the oil inlet 25 through an oil inlet pipe 55. Through the arrangement, the oil pump 53 guides hot oil in the oil tank 51 into the oil filling cavity 23 through the oil inlet pipe 55 communicated with the oil inlet 25, and the hot oil spirally flows in the oil filling cavity 23 to heat the charging barrel 2 in the process; finally, the hot oil flowing back into the oil tank 51 is heated again due to the oil return pipe 54 communicated with the oil return port 24 flowing back into the oil tank 51.

The heating assembly 52 comprises a plurality of electric heating tubes 521 fixedly arranged at the bottom in the oil tank 51, and the electric heating tubes 521 can heat the oil in the oil tank 51 by electrifying; for better heating of the oil, the oil in the oil tank 51 near the inner side wall of the oil tank 51 can be heated by providing the electric coil 522 on the inner side wall of the oil tank 51.

The air pressure in the oil tank 51 is gradually increased along with the heating of the electric heating assembly, and once the air pressure is too high, the oil tank 51 may burst, so that the oil tank 51 is further improved: the upper end of the oil tank 51 is open, and a pressure relief assembly 6 is arranged on the upper end opening of the oil tank 51; the pressure relief assembly 6 comprises a cover plate 61 which is covered on the upper end of the oil tank 51 through an elastic element 62 and covers the upper opening of the oil tank 51, wherein the cover plate 61 always keeps the trend of pressing the cover plate on the upper opening of the oil tank 51 through the elastic element.

Specifically, the method comprises the following steps: the elastic member 62 includes a fixed bar 621 fixedly installed on the inner side wall of the upper end of the oil tank 51, a movable rod 622 vertically movably installed on the fixed bar 621 in a penetrating manner, a bottom plate 623 fixedly installed at the lower end of the movable rod 622, and a spring 624 sleeved on the movable rod 622 and having two ends respectively abutting against the bottom plate 623 and the fixed bar 621, wherein the upper end of the movable rod 622 is fixedly connected with the cover plate 61. Thus, under normal air pressure (the normal air pressure is not standard atmospheric pressure, but is determined according to the elastic coefficient of the spring 624, which is also called safe air pressure), the elastic force of the spring 624 causes the movable rod 622 to keep moving downward, so that the cover plate 61 covers the opening, thereby reducing the heat in the oil tank 51 from escaping from the opening; when the air pressure in the tank is too high, an upward thrust is generated on the cover plate 61, so that the cover plate 61 is jacked up upwards against the elastic force of the spring 624, a gap exists between the cover plate 61 and the tank opening of the oil tank 51, the air pressure in the oil tank 51 is discharged from the gap, and once the air pressure in the oil tank 51 is stabilized, the cover plate 61 is reset under the elastic force of the spring 624.

The implementation principle is as follows: when the charging device works, hot oil in the oil tank 51 is guided into the oil injection cavity 23 through the oil inlet 25 by the oil pump 53, so that the hot oil flows to the oil return opening 24 side along the spiral blade-shaped guide plate 26 in the oil injection cavity 23, finally the hot oil falls back into the oil tank 51 from the oil return pipe 54 on the oil return opening 24 to be heated and utilized again, and in such a circulating reciprocating manner, the flowing hot oil always exists in the oil injection cavity 23, so that the side wall of the charging barrel 2 can be uniformly heated under the heating of the hot oil, and the temperature rising speed in the charging barrel 2 is improved.

Above only the typical example of the utility model discloses, in addition, the utility model discloses can also have other multiple concrete implementation manners, all adopt the technical scheme that equivalent replacement or equivalent transform formed, all fall in the utility model discloses the scope of claiming.

Claims

1. An injection molding machine injection molding mechanism with fast temperature rise comprises a sliding seat (1), a material barrel (2) horizontally arranged on the sliding seat (1), an extrusion screw (3) rotatably connected in the material barrel (2), and a motor (4) arranged at the tail end of the material barrel (2) and in transmission connection with the extrusion screw (3); wherein the front end of feed cylinder (2) is equipped with shower nozzle (21), just be equipped with feeder hopper (22), its characterized in that on feed cylinder (2) tail end upper wall: an oil injection cavity (23) which is coaxial with the charging barrel (2) is formed in the wall of the charging barrel (2); a guide plate (26) is arranged in the oil injection cavity (23); an oil return opening (24) communicated with the oil injection cavity (23) is formed in the side wall of the lower part, close to the tail end, of the charging barrel (2), and an oil inlet (25) is formed in the side wall of the lower part, close to the front end, of the charging barrel (2); and the sliding seat (1) is also provided with a hot oil supply device (5) for supplying hot oil into the oil injection cavity (23).

2. The injection molding machine injection molding mechanism with fast temperature rise according to claim 1, characterized in that: the guide plate (26) is of a spiral blade-shaped structure, and the guide plate (26) is fixedly arranged in the oil injection cavity (23) and is coaxial with the oil injection cavity (23).

3. The injection molding machine injection molding mechanism with fast temperature rise according to claim 1, characterized in that: the hot oil supply device (5) comprises an oil tank (51) fixedly arranged on the sliding seat (1), a heating assembly (52) arranged in the oil tank (51) and an oil pump (53) fixedly arranged on the sliding seat (1); the upper part of the oil tank (51) is communicated with the oil return opening (24) through an oil return pipe (54); the oil inlet end of the oil pump (53) extends into the inner bottom of the oil tank (51), and the oil outlet end of the oil pump (53) is communicated with the oil inlet (25) through an oil inlet pipe (55).

4. The injection molding machine injection molding mechanism with fast temperature rise according to claim 3, characterized in that: the heating assembly (52) comprises a plurality of electric heating pipes (521) fixedly arranged at the bottom in the oil tank (51) and electric heating rings (522) arranged on the inner side wall of the oil tank (51).

5. The injection molding machine injection molding mechanism with fast temperature rise according to claim 3 or 4, characterized in that: the upper end of the oil tank (51) is open, and a pressure relief assembly (6) is arranged on the upper end opening of the oil tank (51); the pressure relief assembly (6) comprises a cover plate (61) which is arranged at the upper end of the oil tank (51) through an elastic piece (62) in a covering mode and covers the upper end opening of the oil tank (51), wherein the cover plate (61) is always kept pressed on the trend that the upper end of the oil tank (51) is opened through the elastic piece (62).

6. The injection molding machine injection molding mechanism with fast temperature rise according to claim 5, characterized in that: elastic component (62) wear to establish movable rod (622) on fixed strip (621), fixed mounting bottom plate (623) at movable rod (622) lower extreme including fixed mounting (621), vertical activity on oil tank (51) upper end inside wall to and the cover is established on movable rod (622) and both ends respectively with bottom plate (623) and fixed strip (621) inconsistent spring (624), wherein the upper end and the apron (61) fixed connection of movable rod (622).