CN220562004U - Plastic powder adding machine - Google Patents

Abstract

The utility model relates to the technical field of rotational molding, in particular to a plastic powder adding machine which comprises a support frame and further comprises an adding mechanism, wherein the adding mechanism is fixedly arranged on the support frame, a weighing mechanism is arranged at the top of the support frame, a mixing mechanism is arranged on the weighing mechanism, the adding mechanism comprises a fan, and the fan is fixedly arranged on the support frame. The utility model has the advantages that: this plastic powder adds machine through setting up the interpolation mechanism, when using, can be even carry out the cloth to the inside of mould, plastic powder is with gaseous blowout under the effect of fan simultaneously, when closing the fan, in the third connecting pipe is retrieved to the connecting cover under the effect of elastic component, the third connecting pipe is sealed, avoid when the secondary is reinforced, steam in the mould enters into in the third connecting pipe, lead to the plastic powder in the mould that has not got into is heated the caking and is attached to on the third connecting pipe, cause the condition of third connecting pipe jam to the condition takes place, thereby ensured work efficiency.

Description

Plastic powder adding machine

Technical Field

The utility model relates to the technical field of rotational molding, in particular to a plastic powder adding machine.

Background

Rotational molding is also called rotational molding, etc., and is a hollow molding method for thermoplastic plastics. The method comprises the steps of firstly adding plastic powder raw materials into a mould, then continuously rotating the mould along two vertical axes and heating the mould, gradually and uniformly coating and fusing the plastic powder raw materials in the mould on the whole surface of a mould cavity under the action of gravity and heat energy, forming the plastic powder raw materials into a required shape, and cooling and shaping the plastic powder raw materials to obtain the product.

In order to obtain a multi-color multi-layer wall rotational molding product, secondary feeding is generally carried out, and the traditional secondary feeding technology is that when a mold is heated for a certain time and the outer layer of the rotational molding product is fused and adhered to a certain degree (preliminary shaping), the mold is withdrawn from an oven, a worker opens a feeding hole of the mold, plastic powder is added into the mold, then the feeding hole is closed, the mold is continuously heated, and the fusion and adhesion of the inner layer material of the rotational molding product are completed, so that the rotational molding of the product is realized.

A rotational molding system disclosed in chinese patent CN215151095U, a thermoplastic zone, a cooling zone, a rotational molding device and a charging station disposed on the same plane; the rotational molding device can rotate relative to a horizontal plane, a plurality of molds are arranged on the rotational molding device, and a feeding mechanism is arranged on each mold; the feeding mechanism is arranged on the feeding table and is communicated with the corresponding mould through a hose.

However, in this rotational molding system and the prior art, there are the following problems when the secondary charging is performed:

when carrying out the secondary feeding, in order to avoid the layering condition of rotational moulding goods to appear, generally can go on when the skin has not cooled down completely, consequently, when the secondary is fed, the temperature of mould is higher, the filling tube is after the charge door of alignment mould, the inside that the plastics powder that the completion of weighing was got into the mould along the filling tube from the charge door, in this in-process, the steam in the mould can enter into the filling tube, the plastics powder in the filling tube just produces the caking because of being heated when still not getting into in the mould, the caking is attached to the speed that will influence the feeding in the filling tube, can cause the filling tube jam even, result in influencing work efficiency.

Accordingly, the present application proposes a plastic powder adder to solve the above-mentioned problems.

Disclosure of Invention

The object of the present utility model is to solve at least one of the technical drawbacks.

The utility model aims to overcome the defects of the prior art, solve the problems in the background art and provide a plastic powder adding machine.

The aim of the utility model is achieved by the following technical scheme: the plastic powder adding machine comprises a support frame and an adding mechanism, wherein the adding mechanism is fixedly arranged on the support frame, a weighing mechanism is arranged at the top of the support frame, and a mixing mechanism is arranged on the weighing mechanism;

the adding mechanism comprises a fan, the fan is fixedly arranged on the supporting frame, a second connecting pipe is arranged at the output end of the fan, a venturi is arranged on the second connecting pipe, one end of the second connecting pipe, which is far away from the fan, is fixedly connected with a telescopic pipe, one end of the telescopic pipe, which is far away from the second connecting pipe, is fixedly connected with a third connecting pipe, a material distribution assembly is arranged in the third connecting pipe, a connecting frame is arranged in the third connecting pipe, a rotating piece is arranged on the connecting frame, and the material distribution assembly is in rotating connection with the connecting frame through the rotating piece;

the cloth subassembly includes the second connecting axle, and second connecting axle and rotating piece swing joint, and the one end fixedly connected with connecting plate of second connecting axle is provided with the elastic component on the connecting plate, and the one end fixedly connected with connecting cover of connecting plate is kept away from to the second connecting axle, has offered the cloth passageway on the connecting cover.

Preferably, the weighing mechanism comprises a weighing box, the weighing box is located on the supporting frame, an air cylinder is arranged in the weighing box, a rotating plate is hinged to the output end of the air cylinder, one side, far away from the air cylinder, of the rotating plate is rotationally connected to the inside of the weighing box, a weighing device is arranged at the top of the rotating plate, a material receiving frame is arranged at the top of the weighing device, and a blanking pipe is arranged at the bottom of the weighing box.

Preferably, the mixing mechanism comprises a mixing drum, a feeding hopper is arranged at the top of the mixing drum, a servo motor is fixedly arranged at the top of the mixing drum, a first connecting shaft is fixedly connected with the output end of the servo motor, a stirring rod is arranged on the first connecting shaft, a first connecting pipe is arranged at the bottom of the mixing drum, one end of the first connecting pipe, which is far away from the mixing drum, is fixedly connected onto the weighing box, and the position of the first connecting pipe corresponds to the position of the material receiving frame.

Preferably, the venturi is flanged to the discharge tube.

Preferably, one end of the elastic piece far away from the connecting plate is rotationally connected with the connecting frame through the rotating piece.

Preferably, the connecting cover is adapted to the third connecting tube.

Preferably, the axis of the cloth path is parallel to the tangent of the connecting cover.

Compared with the prior art, the utility model has the following advantages:

this plastic powder adds machine through setting up the interpolation mechanism, when using, can be even carry out the cloth to the inside of mould, plastic powder is with gaseous blowout under the effect of fan simultaneously, when closing the fan, in the third connecting pipe is retrieved to the connecting cover under the effect of elastic component, the third connecting pipe is sealed, avoid when the secondary is reinforced, steam in the mould enters into in the third connecting pipe, lead to the plastic powder in the mould that has not got into is heated the caking and is attached to on the third connecting pipe, cause the condition of third connecting pipe jam to the condition takes place, thereby ensured work efficiency.

None of the parts of the device are the same as or can be implemented using prior art.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a weighing mechanism of the present utility model;

FIG. 3 is a schematic cross-sectional view of the mixing mechanism of the present utility model;

FIG. 4 is a schematic view of a partial cross-sectional structure of the addition mechanism of the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 4A according to the present utility model;

FIG. 6 is an enlarged schematic view of the structure of FIG. 4B according to the present utility model;

FIG. 7 is a schematic view of a partially cut-away structure of the working state of the adding mechanism of the present utility model;

FIG. 8 is a schematic cross-sectional view of a first view of the cloth assembly of the present utility model;

fig. 9 is a schematic cross-sectional view of a second view of the cloth assembly of the present utility model.

In the figure: 1. a support frame; 2. a weighing mechanism; 201. weighing box; 202. a cylinder; 203. a rotating plate; 204. a weighing device; 205. a material receiving frame; 206. discharging pipes; 3. a mixing mechanism; 301. a mixing drum; 302. a feed hopper; 303. a servo motor; 304. a first connecting shaft; 305. a stirring rod; 306. a first connection pipe; 4. an adding mechanism; 41. a blower; 42. a second connection pipe; 43. a venturi; 44. a telescopic tube; 45. a third connection pipe; 46. a cloth component; 461. a second connecting shaft; 462. a connecting plate; 463. an elastic member; 464. a connection cover; 465. a cloth channel; 47. and a rotating member.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Additional aspects and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

As shown in fig. 1, the plastic powder adding machine comprises a support frame 1 and an adding mechanism 4, wherein the adding mechanism 4 is fixedly arranged on the support frame 1, a weighing mechanism 2 is arranged at the top of the support frame 1, a mixing mechanism 3 is arranged on the weighing mechanism 2, a supporting platform is arranged on the support frame 1, the weighing mechanism 2 and the adding mechanism 4 are both positioned on the supporting platform, an overhaul cat ladder is arranged on one side of the support frame 1, and a protective rail is arranged on the supporting platform;

as shown in fig. 1 and 2, the weighing mechanism 2 comprises a weighing box 201, an air cylinder 202, a rotating plate 203, a weighing device 204, a receiving frame 205 and a discharging pipe 206, wherein the weighing box 201 is positioned on a supporting frame 1, the air cylinder 202 is arranged in the weighing box 201, the rotating plate 203 is hinged to the output end of the air cylinder 202, one side, far away from the air cylinder 202, of the rotating plate 203 is rotatably connected in the weighing box 201, the weighing device 204 is arranged at the top of the rotating plate 203, the receiving frame 205 is arranged at the top of the weighing device 204, the discharging pipe 206 is arranged at the bottom of the weighing box 201, a first discharging hopper is arranged at the bottom of the weighing box 201, and the discharging pipe 206 is fixedly connected at the bottom of the first discharging hopper;

as shown in fig. 1 and 3, the mixing mechanism 3 comprises a mixing drum 301, a feed hopper 302, a servo motor 303, a first connecting shaft 304, a stirring rod 305 and a first connecting pipe 306, wherein the feed hopper 302 is arranged at the top of the mixing drum 301, the servo motor 303 is fixedly arranged at the top of the mixing drum 301, the output end of the servo motor 303 is fixedly connected with the first connecting shaft 304, the stirring rod 305 is arranged on the first connecting shaft 304, the first connecting pipe 306 is arranged at the bottom of the mixing drum 301, electromagnetic valves are arranged on the first connecting pipe 306 and the blanking pipe 206, one end of the first connecting pipe 306 far away from the mixing drum 301 is fixedly connected to the weighing box 201, and the position of the first connecting pipe 306 corresponds to the position of the material connecting frame 205;

as shown in fig. 4-7, the adding mechanism 4 comprises a fan 41, a second connecting pipe 42, a venturi 43, a telescopic pipe 44, a third connecting pipe 45, a material distribution assembly 46 and a rotating piece 47, wherein the fan 41 is fixedly installed on the support frame 1, the output end of the fan 41 is provided with the second connecting pipe 42, the venturi 43 is arranged on the second connecting pipe 42, the venturi 43 is in flange connection with the blanking pipe 206, one end, far away from the fan 41, of the second connecting pipe 42 is fixedly connected with the telescopic pipe 44, one end, far away from the second connecting pipe 42, of the telescopic pipe 44 is fixedly connected with the third connecting pipe 45, the material distribution assembly 46 is arranged in the third connecting pipe 45, a connecting frame is arranged in the third connecting pipe 45, the rotating piece 47 is arranged on the connecting frame, and the material distribution assembly 46 is in rotating connection with the connecting frame through the rotating piece 47;

as shown in fig. 7-9, the cloth assembly 46 includes a second connecting shaft 461, a connecting plate 462, an elastic member 463, a connecting cover 464 and a cloth channel 465, where the second connecting shaft 461 is movably connected with the rotating member 47, one end of the second connecting shaft 461 is fixedly connected with the connecting plate 462, the connecting plate 462 is provided with the elastic member 463, one end of the elastic member 463 away from the connecting plate 462 is rotationally connected with the connecting frame through the rotating member 47, one end of the second connecting shaft 461 away from the connecting plate 462 is fixedly connected with the connecting cover 464, the connecting cover 464 is matched with the third connecting pipe 45, the connecting cover 464 is provided with the cloth channel 465, the axes of the cloth channels 465 are parallel to the tangent lines of the connecting cover 464, the number of the cloth channels 465 is plural, and the circumference is arrayed on the connecting cover 464.

The working process of the utility model is as follows:

s1, firstly, adding plastic powder and an additive into a mixing drum 301 from a feed hopper 302, starting a servo motor 303, and driving a stirring rod 305 to stir and mix the plastic powder and the additive by the servo motor 303 through a first connecting shaft 304;

s2, after uniform mixing, opening an electromagnetic valve on a first connecting pipe 306, so that mixed plastic powder falls into a material receiving frame 205 along the first connecting pipe 306, weighing the plastic powder by a weighing device 204, closing the electromagnetic valve on the first connecting pipe 306 when the required weight is reached, starting an air cylinder 202, driving a rotating plate 203 to rotate by the air cylinder 202, so that the plastic powder in the material receiving frame 205 falls into a weighing box 201, and opening the electromagnetic valve on a discharging pipe 206;

s3, stretching the third connecting pipe 45 into a charging hole of the die, starting the fan 41, under the influence of a Venturi effect (the principle of the Venturi effect is that when wind blows across a barrier, the air pressure near a port above a leeward side of the barrier is relatively low, thereby generating adsorption and causing air to flow), generating negative pressure at the Venturi 43, sucking plastic powder in the discharging pipe 206 into the second connecting pipe 42, and entering the third connecting pipe 45 along the telescopic pipe 44, wherein the air pressure in the third connecting pipe 45 is increased under the condition that the fan 41 continuously operates, the pushing connecting cover 464 slides outwards, the elastic piece 463 is compressed, and when a cloth channel 465 is exposed outside, the air drives the plastic powder to be ejected from the cloth channel 465;

s4, as the axial direction of the cloth channel 465 is parallel to the tangential direction of the connecting cover 464, the cloth assembly 46 starts to rotate under the recoil force of flowing gas, so that the inside of the die can be uniformly distributed;

s5, when the fan 41 is closed, the connecting cover 464 is retracted into the third connecting pipe 45 under the action of the elastic piece 463, the third connecting pipe 45 is closed, and the situation that the third connecting pipe 45 is blocked due to the fact that hot air in the mold enters into the third connecting pipe 45 and plastic powder which does not enter into the mold is heated and agglomerated and attached to the third connecting pipe 45 during secondary feeding is avoided, so that the working efficiency is ensured.

Compared with the prior art, the utility model has the following beneficial effects compared with the prior art:

this plastic powder adds machine through setting up adding mechanism 4, when using, can be even carry out the cloth to the mould inside, simultaneously plastic powder along with gaseous blowout under the effect of fan 41, when closing fan 41, connect the cover 464 and receive back in the third connecting pipe 45 under the effect of elastic component 463, third connecting pipe 45 is sealed, avoid when the secondary is reinforced, steam in the mould enters into in the third connecting pipe 45, the plastics powder that leads to not getting into in the mould still is heated the caking and is attached to on third connecting pipe 45, cause the condition of third connecting pipe 45 jam to take place to work efficiency has been ensured.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims (7)

1. Plastic powder adder, including support frame (1), its characterized in that: the automatic weighing device is characterized by further comprising an adding mechanism (4), wherein the adding mechanism (4) is fixedly arranged on the supporting frame (1), a weighing mechanism (2) is arranged at the top of the supporting frame (1), and a mixing mechanism (3) is arranged on the weighing mechanism (2);

the adding mechanism (4) comprises a fan (41), the fan (41) is fixedly arranged on the supporting frame (1), a second connecting pipe (42) is arranged at the output end of the fan (41), a venturi (43) is arranged on the second connecting pipe (42), one end, away from the fan (41), of the second connecting pipe (42) is fixedly connected with a telescopic pipe (44), one end, away from the second connecting pipe (42), of the telescopic pipe (44) is fixedly connected with a third connecting pipe (45), a cloth component (46) is arranged in the third connecting pipe (45), a connecting frame is arranged in the third connecting pipe (45), a rotating piece (47) is arranged on the connecting frame, and the cloth component (46) is rotationally connected with the connecting frame through the rotating piece (47);

the cloth assembly (46) comprises a second connecting shaft (461), the second connecting shaft (461) is movably connected with the rotating piece (47), one end of the second connecting shaft (461) is fixedly connected with a connecting plate (462), an elastic piece (463) is arranged on the connecting plate (462), the second connecting shaft (461) is far away from one end of the connecting plate (462) and is fixedly connected with a connecting cover (464), and a cloth channel (465) is formed in the connecting cover (464).

2. A plastic powder adder according to claim 1, characterized in that: weighing machine constructs (2) including weighing box (201), weighing box (201) are located on support frame (1), the inside of weighing box (201) is provided with cylinder (202), the output of cylinder (202) articulates there is rotor plate (203), rotor plate (203) keep away from one side rotation of cylinder (202) is connected the inside of weighing box (201), the top of rotor plate (203) is provided with weighing device (204), the top of weighing device (204) is provided with connects work or material rest (205), the bottom of weighing box (201) is provided with unloading pipe (206).

3. A plastic powder adder according to claim 2, characterized in that: mixing mechanism (3) are including mixing drum (301), the top of mixing drum (301) is provided with feeder hopper (302), the top fixed mounting of mixing drum (301) has servo motor (303), the output fixedly connected with first connecting axle (304) of servo motor (303), be provided with puddler (305) on first connecting axle (304), the bottom of mixing drum (301) is provided with first connecting pipe (306), the one end fixed connection that mixing drum (301) was kept away from to first connecting pipe (306) is on weighing box (201), just the position of first connecting pipe (306) with connect the position of material frame (205) corresponding.

4. A plastic powder adder according to claim 2, characterized in that: the venturi tube (43) is in flange connection with the blanking tube (206).

5. A plastic powder adder according to claim 1, characterized in that: one end of the elastic piece (463) far away from the connecting plate (462) is rotatably connected with the connecting frame through a rotating piece (47).

6. A plastic powder adder according to claim 1, characterized in that: the connecting cover (464) is matched with the third connecting pipe (45).

7. A plastic powder adder according to claim 1, characterized in that: the axis of the cloth path (465) is parallel to the tangent of the connecting cover (464).