CN215396769U

CN215396769U - Material feeding unit is melted to plastics ration

Info

Publication number: CN215396769U
Application number: CN202121857363.9U
Authority: CN
Inventors: 肖云辉
Original assignee: Foshan Shunde Zhineng Precision Mould Co ltd
Current assignee: Foshan Shunde Zhineng Precision Mould Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-04
Anticipated expiration: 2031-08-09

Abstract

The utility model belongs to the technical field of heating, melting and feeding before plastic injection molding, and particularly relates to a plastic quantitative melting and feeding device which comprises a charging hopper, a quantitative feeder and a heating box which are sequentially arranged from top to bottom; the upper part of the heating box is provided with a feeding hole, the lower part of the heating box is provided with a discharging hole, and a screw blade for plastic stirring is arranged in the heating box; a transfer cavity is arranged in the quantitative feeder, the upper part of the transfer cavity is communicated with the charging hopper, and the lower part of the transfer cavity is communicated with the heating box; the cross feeding blade is arranged in the transfer cavity and can rotate to transfer the plastic above the cross feeding blade to the lower side of the cross feeding blade. The quantitative melting and feeding of the plastic particles can be realized by using the quantitative feeder, and the plastic fed into the plastic extruder is ensured to be in a melting state; the heater in this scheme does not adopt traditional electric heating mode, but utilizes steam and the heating coil pipe who communicates the steam pipeline to realize melting of plastics.

Description

Material feeding unit is melted to plastics ration

Technical Field

The utility model belongs to the technical field of heating, melting and feeding before plastic injection molding, and particularly relates to a plastic quantitative melting and feeding device.

Background

With the continuous improvement of living standard and production speed of people, people have more and more demands on hollow plastic containers, and the quality requirements on the hollow plastic containers are higher and higher. In plastic extrusion molding equipment, a plastic extruder is generally called as a main machine and is mainly used for plastic extrusion, the plastic extruder is an important plastic machine, most of plastic products can be produced and manufactured by extrusion molding, and after the development of the plastic extruder for more than 100 years, multiple machine types such as double screws, multiple screws and even no screws are derived from the original single screw. Meanwhile, a plastic extrusion molding machine of subsequent equipment matched with the matched plastic extruder is called an auxiliary machine; the auxiliary machine comprises a device for collecting extruded plastic containers, and also comprises a heating mechanism connected to the input side of the plastic extruder, some existing plastics are heated and melted in the plastic extruder, harmful gas can be emitted in the mode, the service life of the plastic extruder can be influenced, and the plastic needs to be synchronously conveyed when being heated and melted, before the viscosity of the plastic in the melting process reaches a certain degree, a large amount of resistance can be generated by the plastic, the large thrust required by a screw rod of the plastic extruder is provided, a large amount of electric power is consumed, the energy conservation and consumption reduction in the production and manufacturing process are not facilitated, and therefore, the device capable of heating and melting the plastic before plastic extrusion molding is necessarily designed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem that prior art plastic extrusion molding technology can not preheat and melt, this scheme provides a material feeding unit is melted to plastics ration.

The technical scheme adopted by the utility model is as follows:

a plastic quantitative melting and feeding device comprises a charging hopper, a quantitative feeder and a heating box which are arranged from top to bottom in sequence; the upper part of the heating box is provided with a feeding hole, the lower part of the heating box is provided with a discharging hole, and a screw blade for plastic stirring is arranged in the heating box; a transfer cavity is arranged in the quantitative feeder, the upper part of the transfer cavity is communicated with the charging hopper, and the lower part of the transfer cavity is communicated with the heating box; the cross feeding blade is arranged in the transfer cavity and can rotate to transfer the plastic above the cross feeding blade to the lower side of the cross feeding blade. Utilize the charging hopper to feed in this scheme, this ration feeder adopts cross feeding vane, can both shift a certain amount of plastic granules to the heating cabinet of below when every rotation degree of cross feeding vane to realize that the ration heating melts, can melt plastics according to batch heating, reduce the condition emergence of melting plastics and plastic granules mixing, simultaneously, the discharge gate of heating cabinet below can be connected to on the plastics extruder, thereby will be when the plastics that melts send out to the plastics extruder in.

As an alternative construction and supplementary design to the above solution: the quantitative feeder is detachably connected with the heating box, and the lower part of the quantitative feeder is connected to the heating box through screws. The quantitative feeder is mainly used for quantitatively feeding plastic particles, and the plastic particles have certain hardness, so that the quantitative feeder is easy to damage cross feeding blades in the long-term use process, and the quantitative feeder and the heating box are in a detachable connection structure, so that the quantitative feeder is convenient to disassemble and overhaul.

As an alternative construction and supplementary design to the above solution: two opposite side walls at the lower part of the quantitative feeder are respectively provided with a U-shaped groove and a kidney-shaped hole, and two screws respectively penetrate through the U-shaped groove and the kidney-shaped hole to be connected with the heating box. One side of the lower part of the quantitative feeder is provided with a U-shaped groove, so that after the screw on the waist-shaped hole side is disassembled, the screw on the side of the U-shaped groove only needs to be unscrewed to disassemble the quantitative feeder, and the disassembling mode of the quantitative feeder is simplified.

As an alternative construction and supplementary design to the above solution: the wall of the heating box comprises an inner wall and an outer wall, and the outer wall is located outside the inner wall and made of heat-insulating materials. The heater adopts the structure of the inner layer and the outer layer, and the outer layer of heat insulation material is utilized to realize effective heat insulation, thereby saving energy and reducing consumption.

As an alternative construction and supplementary design to the above solution: a heating coil is embedded in the inner wall of the heating box, and water vapor can be introduced into the heating coil to heat and melt the plastic in the heating box. Utilize heating coil to realize the heating, the security that this kind of structure compares in the electrical heating mode is higher, can utilize unified vapor pipeline to supply heat in a plurality of heating chambers in the production line environment simultaneously, improves the convenience of heat supply.

As an alternative construction and supplementary design to the above solution: the screw propeller blades in the heating box comprise forward screw propeller blades and reverse screw propeller blades, the forward screw propeller blades and the reverse screw propeller blades are arranged in the horizontal direction and are parallel to each other, and the screw directions and the rotation directions of the forward screw propeller blades and the reverse screw propeller blades are opposite. By adopting two horizontally arranged propeller blades, when the two propeller blades rotate in opposite directions, the heating box can be quickly stirred in the horizontal direction.

As an alternative construction and supplementary design to the above solution: the discharge port of the heating box is provided with a vertical propeller blade, the vertical propeller blade is vertically arranged, the lower end of the vertical propeller blade is connected with a corresponding driving motor, and the upper end of the vertical propeller blade extends to the feed port. The vertical propeller blade is arranged in a manner that the discharge hole of the heating box is blocked before plastic particles in the heater reach a molten state, so that the plastic in the heating box is prevented from flowing out before the plastic is completely melted, and the vertical propeller blade can be turned over vertically when rotating reversely.

As an alternative construction and supplementary design to the above solution: the discharge port of the heating box is L-shaped.

The utility model has the beneficial effects that:

1. according to the scheme, the quantitative melting and feeding of the plastic particles can be realized by using the quantitative feeder, and the plastic fed into the plastic extruder is ensured to be in a melting state;

2. the heater in the scheme does not adopt a traditional electric heating mode, but utilizes steam and a heating coil communicated with a steam pipeline to melt plastics, and when the plastic extruder is used in batches, unified heat supply can be realized, and energy conservation and consumption reduction are realized;

3. reverse propeller blade, forward propeller blade, vertical propeller blade's cooperation structure in the heater in this scheme, plastics can realize in the heating cabinet in the cooperation of three in horizontal direction and the ascending roll of vertical direction to improve the degree of consistency of stirring.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic structural diagram of a plastic quantitative melting and feeding device in the scheme;

FIG. 2 is a schematic view of the structure of a quantitative feeder;

fig. 3 is a schematic view of the structure of the heating box.

In the figure: 1-a charging hopper; 2-quantitative feeder; 21-a transfer cavity; 22-cross feeder vanes; 23-a U-shaped slot; 24-kidney shaped holes; 3-heating the box; 31-a feed inlet; 32-forward propeller blades; 33-heating coils; 34-an inner wall; 35-reverse propeller blades; 36-an outer wall; 37-vertical propeller blades; 38-discharge port.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings, and the described embodiments are only a part of the embodiments, but not all embodiments, and all other embodiments obtained by those skilled in the art without creative efforts will belong to the protection scope of the present solution based on the embodiments in the present solution.

Example 1

As shown in fig. 1 to fig. 3, the present embodiment designs a plastic quantitative melting and feeding device, which includes a charging hopper 1, a quantitative feeder 2, a heating box 3, and the like. The charging hopper 1 is connected above the quantitative feeder 2, the heating box 3 is connected below the quantitative feeder 2, and the plastic is quantitatively conveyed into the heating box 3 by the quantitative feeder 2 to be heated and melted.

The hopper 1 is funnel-shaped with a large upper part and a small lower part, and the upper part of the hopper 1 is open, so that the plastic particles can fall into the quantitative feeder 2 under the action of gravity.

The upper part of the quantitative feeder 2 is detachably connected with the lower part of the charging hopper 1, a transfer cavity 21 is arranged in the quantitative feeder 2, the upper part of the transfer cavity 21 is communicated with the charging hopper 1, and the lower part of the transfer cavity 21 is communicated with the heating box 3; the cross feeding blade 22 is arranged in the transfer cavity 21, the cross feeding blade 22 divides the transfer cavity 21 into four subareas, when one of the subareas is aligned with the outlet at the lower part of the charging hopper 1, the subarea can be filled with sufficient plastic particles, and when the cross feeding blade 22 is driven by a motor or other power mechanisms to rotate, and the subarea is rotated to the position below the transfer cavity 21, the plastic particles can be quantitatively transferred to the heating box 3 below the quantitative feeder 2, so that the plastic extruder can quantitatively control the required plastic, and waste is effectively avoided.

The quantitative feeder 2 is detachably connected with the heating box 3, two opposite side walls of the lower portion of the quantitative feeder 2 are respectively provided with a U-shaped groove 23 and a kidney-shaped hole 24, and two screws respectively penetrate through the U-shaped groove 23 and the kidney-shaped hole 24 to be connected with the heating box 3. The quantitative feeder 2 mainly functions in quantitative feeding of plastic particles, and the plastic particles have certain hardness, so that the cross feeding blades 22 of the quantitative feeder 2 are easily damaged in the long-term use process, and the U-shaped groove 23 is formed in one side of the lower portion of the quantitative feeder 2, so that after the screws on the side of the waist-shaped hole 24 are disassembled, the screws on the side of the U-shaped groove 23 only need to be unscrewed, and the disassembly mode of the quantitative feeder 2 can be simplified.

The heating box 3 has an inlet 31 at the upper portion thereof, and the heating box 3 has an outlet 38 at the lower portion thereof, and the inlet 31 at the upper portion of the heating box 3 is aligned with the transfer chamber 21 of the quantitative feeder 2, so that the plastic can be fed into the heating box 3.

The wall of the heating box 3 comprises an inner wall 34 and an outer wall 36, wherein the outer wall 36 is positioned outside the inner wall 34 and is made of heat-insulating materials, so that heat insulation, energy conservation and consumption reduction are realized. A heating coil 33 is embedded in the inner wall 34 of the heating box 3, and water vapor can be introduced into the heating coil 33 to heat and melt the plastic in the heating box 3. In the actual production line environment, can set up a plurality of heating cabinets 3 to utilize unified vapor pipeline to supply heat, improve the convenience of heat supply. A screw blade for plastic stirring is arranged in the heating box 3; a discharge port 38 below the heating box 3 can be connected to the plastic extruder to discharge the now molten plastic into the plastic extruder. The propeller blades in the heating box 3 include a forward propeller blade 32 and a reverse propeller blade 35, the forward propeller blade 32 and the reverse propeller blade 35 are both arranged in the horizontal direction and are parallel to each other, and the spiral directions and the rotation directions of the forward propeller blade 32 and the reverse propeller blade 35 are both opposite. The discharge port 38 of the heating box 3 is L-shaped, the vertical propeller blade 37 is arranged at the discharge port 38 of the L-shaped, the vertical propeller blade 37 is vertically arranged, the lower end of the vertical propeller blade 37 is connected with the corresponding driving motor, and the upper end of the vertical propeller blade 37 extends to the feed port 31. The vertical propeller blade 37 can not only block the discharge hole 38 of the heating box 3 before the plastic particles in the heater reach the molten state, so as to prevent the plastic in the heating box 3 from flowing out before the plastic is completely melted, but also can vertically roll the propeller blade when the vertical propeller blade 37 rotates reversely. With two horizontally arranged propeller blades, rapid stirring of the heating chamber 3 in the horizontal direction can be achieved when both are rotated in opposite directions.

The above examples are merely for clearly illustrating the examples and are not intended to limit the embodiments; and are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this technology may be resorted to while remaining within the scope of the technology.

Claims

1. The utility model provides a material feeding unit is melted to plastics ration which characterized in that: comprises a charging hopper (1), a quantitative feeder (2) and a heating box (3) which are arranged from top to bottom in sequence; the upper part of the heating box (3) is provided with a feeding hole (31), the lower part of the heating box (3) is provided with a discharging hole (38), and a screw blade for plastic stirring is arranged in the heating box (3); a transfer cavity (21) is arranged in the quantitative feeder (2), the upper part of the transfer cavity (21) is communicated with the charging hopper (1), and the lower part of the transfer cavity (21) is communicated with the heating box (3); a cross feeding blade (22) is arranged in the transfer cavity (21), and the cross feeding blade (22) can rotate to transfer plastic above the cross feeding blade to the lower side of the cross feeding blade.

2. The plastic quantitative melting and feeding device of claim 1, characterized in that: the quantitative feeder (2) is detachably connected with the heating box (3), and the lower part of the quantitative feeder (2) is connected to the heating box (3) through screws.

3. The plastic quantitative melting and feeding device of claim 2, characterized in that: two opposite side walls at the lower part of the quantitative feeder (2) are respectively provided with a U-shaped groove (23) and a kidney-shaped hole (24), and two screws respectively penetrate through the U-shaped groove (23) and the kidney-shaped hole (24) to be connected with the heating box (3).

4. The plastic quantitative melting and feeding device of claim 1, characterized in that: the wall of the heating box (3) comprises an inner wall (34) and an outer wall (36), and the outer wall (36) is located outside the inner wall (34) and is made of heat-insulating materials.

5. The plastic quantitative melting and feeding device of claim 4, wherein: a heating coil (33) is embedded in the inner wall (34) of the heating box (3), and steam can be introduced into the heating coil (33) to heat and melt the plastic in the heating box (3).

6. The plastic quantitative melting and feeding device of claim 1, characterized in that: the propeller blades in the heating box (3) comprise a forward propeller blade (32) and a reverse propeller blade (35), the forward propeller blade (32) and the reverse propeller blade (35) are arranged along the horizontal direction and are parallel to each other, and the spiral directions and the rotating directions of the forward propeller blade (32) and the reverse propeller blade (35) are opposite.

7. The plastic quantitative melting and feeding device of claim 1, characterized in that: a discharge hole (38) of the heating box (3) is provided with a vertical screw blade (37), the vertical screw blade (37) is vertically arranged, the lower end of the vertical screw blade is connected with a corresponding driving motor, and the upper end of the vertical screw blade (37) extends to the feed hole (31).

8. The plastic quantitative melting and feeding device of claim 1, characterized in that: the discharge hole (38) of the heating box (3) is L-shaped.