CN111231160A

CN111231160A - Raw material melting device for injection molding

Info

Publication number: CN111231160A
Application number: CN202010038720.2A
Authority: CN
Inventors: 郭明珠
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-06-05

Abstract

The invention belongs to the technical field of injection molding, and particularly relates to a raw material melting device for injection molding, which aims at solving the problem that a large amount of plastic raw materials cannot be used quickly due to melting and condensation states of the plastic raw materials are changed for many times to reduce the quality of the plastic raw materials. According to the invention, part of the plastic raw material is fed into the melting cavity in the connecting cylinder by using the first spiral blade and the second spiral blade, and then the heating coil on the outer wall of the connecting cylinder is used for heating and melting the part of the plastic raw material, so that the energy consumption is reduced, and the part of the plastic is melted according to the requirement, so that the quality reduction caused by the repeated change of the plastic raw material in the filling cylinder is avoided.

Description

Raw material melting device for injection molding

Technical Field

The invention relates to the technical field of injection molding, in particular to a raw material melting device for injection molding.

Background

Injection molding is a method for producing and molding industrial products, and the products generally adopt rubber injection molding and plastic injection molding, and the injection molding can also be divided into injection molding and die casting methods, an injection molding machine (an injection machine or an injection molding machine for short) is main molding equipment for manufacturing thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die, and the injection molding is realized by the injection molding machine and the die.

Need among the injection molding process extrude the operation of moulding plastics in the mechanism of moulding plastics after melting plastics raw and other materials, generally put into plastics raw materials among the prior art in melting the casing, and be provided with heating coil in order to heat all plastics raw materials in the casing and melt the operation melting the casing outside melting the casing, and at the in-process of the operation of actually moulding plastics, can appear and be interrupted work, melt raw materials in the casing and can be heated and melt and change many times between the condensation state, can damage the quality of plastics raw materials, and directly melt a large amount of plastics raw materials in melting the casing and cause unnecessary waste.

Disclosure of Invention

The invention provides a raw material melting device for injection molding, which is based on the technical problem that a large amount of plastic raw materials cannot be used quickly due to melting and can be changed for many times in melting and condensing states to reduce the quality of the plastic raw materials.

The invention provides a raw material melting device for injection molding, which comprises a filling cylinder, wherein a storage cavity is arranged in the filling cylinder, a feed inlet is formed in one side of the top of the storage cavity, a connecting cylinder extending downwards is fixed at the bottom end of the outer wall of the filling cylinder, a melting cavity is formed in the connecting cylinder, a heating mechanism is arranged on the outer wall of the connecting cylinder, a fixed rod is rotatably connected to the middle position of the inner wall of the top of the filling cylinder, a rotating motor is connected to the top end of the fixed rod in a transmission manner, a first spiral blade is fixed to the position, corresponding to a discharge outlet at the bottom end of the filling cylinder, of the outer wall of the fixed rod, and a second spiral blade is fixed to the.

Preferably, the outer wall of the connecting cylinder is provided with a plurality of mounting grooves with annular structures, the heating mechanism is provided with a heating coil fixed on the inner wall of the mounting groove, the outer wall of the connecting cylinder is fixed with a heat preservation shell, the inner wall of the connecting cylinder is provided with a plurality of auxiliary grooves with annular structures, and the auxiliary grooves and the heating coil are distributed at intervals.

Preferably, the bottom that is located the feed inlet between the inner wall of packing section of thick bamboo both ends rotates and is connected with two crushing rollers, and the crushing roller transmission is connected with driving motor.

Preferably, a plurality of auxiliary rods are fixed to the outer wall of the fixing rod, and a plurality of crushing teeth are fixed to the outer wall of the auxiliary rods.

Preferably, the heat preservation shell is arranged to be a cylindrical structure, the inner wall of the heat preservation shell is in threaded connection with the outer wall of the connecting cylinder, a limiting piece is fixed to the top of the outer wall of the connecting cylinder, and the bottom of the limiting piece is in abutting joint with the top of the heat preservation shell.

Preferably, the top of the heat preservation shell is fixed with a limit strip of an annular structure, and a position of the bottom of the limit part corresponding to the limit strip is provided with a limit groove matched with the limit strip.

Preferably, the bottom end of the inner wall of the heat-insulating shell is fixed with a sealing ring, the bottom end of the outer wall of the connecting cylinder is provided with a sealing groove of an annular structure, the inner wall of the sealing ring is in threaded connection with the inner wall of the sealing groove, and the top of the sealing ring is abutted to the inner wall of the top of the sealing groove.

Preferably, the top of sealing ring is fixed with the sand grip of annular structure, and the top inner wall of seal groove seted up the spread groove with sand grip looks adaptation.

Preferably, the top outer wall of the raised line is arranged in a sawtooth structure.

Preferably, the inner wall of the top of the melting cavity is provided with a plurality of through holes communicated with the storage cavity, and a filter screen is fixed on the inner wall of the top end of each through hole.

Compared with the prior art, the invention provides a raw material melting device for injection molding, which has the following beneficial effects:

1. this device is melted with raw materials to mould plastics, bottom mounting through at a packing section of thick bamboo has the connecting cylinder, utilize first helical blade and second helical blade to make partial plastic raw materials sent into the inside intracavity that melts of connecting cylinder, then utilize the heating coil of connecting cylinder outer wall to heat partial plastic raw materials and melt, and utilize the second helical blade to see off the plastic raw materials after melting, can avoid directly melting a large amount of plastic raw materials of a packing section of thick bamboo, reduce energy consumption, and melt partial plastics according to required coming, the whole in-process plastic raw materials that need temporarily refrigerated again after melting of raw materials in the packing section of thick bamboo changes many times and causes the quality to descend, thereby improve the holistic quality of the operation of moulding plastics.

2. This device is melted with raw materials to mould plastics, through melting the auxiliary tank that the intracavity wall seted up a plurality of loop configuration, make auxiliary tank and connecting cylinder outside heating coil interval distribution, thereby improve the heating effect to melting the intracavity, and utilize spacing and the spacing groove of top looks adaptation to increase the leakproofness between heat preservation housing top and the locating part, the sand grip and the spread groove that utilize bottom looks adaptation increase the leakproofness of heat preservation housing bottom, thereby guarantee the thermal make full use of heating coil, and improve the dampproofing taking precautions against of heating coil, the life of extension equipment.

3. This device is melted with raw materials to mould plastics through having seted up the perforation between melting chamber top and storage chamber bottom, usable perforation and storage chamber intercommunication will melt the intracavity because the bubble and the gaseous extraction that the production was melted in the heating, avoid melting the quality that contains too much bubble influence follow-up operation of moulding plastics in the plastic materials after.

Drawings

FIG. 1 is a schematic view of the overall structure of a raw material melting apparatus for injection molding according to the present invention;

FIG. 2 is a schematic cross-sectional view of a melting apparatus for injection molding raw material according to the present invention;

FIG. 3 is an enlarged schematic structural view of part A of a raw material melting apparatus for injection molding according to the present invention;

FIG. 4 is a schematic view of a bottom end structure of a filling cylinder of a raw material melting device for injection molding according to the present invention.

In the figure: 1 a packing cylinder, 2 storage chambers, 3 connecting cylinders, 4 melting chambers, 5 fixing rods, 6 first helical blades, 7 second helical blades, 8 heating coils, 9 heat preservation shells, 10 auxiliary rods, 11 auxiliary grooves, 12 limiting pieces, 13 limiting strips, 14 sealing rings, 15 sealing grooves, 16 convex strips, 17 connecting grooves, 18 through holes and 19 filter screens.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-3, a device is melted with raw materials to injection molding, including a packing section of thick bamboo 1, be provided with storage chamber 2 in the packing section of thick bamboo 1, and one side at 2 tops of storage chamber is provided with the feed inlet, the bottom mounting of 1 outer wall of packing section of thick bamboo has downwardly extending's connecting cylinder 3, and the inside of connecting cylinder 3 is provided with melts chamber 4, the outer wall of connecting cylinder 3 is provided with heating mechanism, the intermediate position of 1 top inner wall of packing section of thick bamboo rotates and is connected with dead lever 5, and the top transmission of dead lever 5 is connected with the rotation motor, the position that 5 outer walls of dead lever and 1 bottom discharge gate of packing section of thick bamboo correspond is fixed with first helical blade 6, and the position that 5 outer walls of dead lever.

According to the invention, a plurality of mounting grooves with annular structures are formed in the outer wall of a connecting cylinder 3, a heating coil 8 fixed on the inner wall of each mounting groove is arranged on a heating mechanism, a heat-insulating shell 9 is fixed on the outer wall of the connecting cylinder 3, a plurality of auxiliary grooves 11 with annular structures are formed in the inner wall of the connecting cylinder 3, the auxiliary grooves 11 and the heating coil 8 are distributed at intervals, two crushing rollers are rotatably connected to the bottoms of feed inlets between the inner walls of two ends of a packing cylinder 1, the crushing rollers are connected with a driving motor in a transmission manner, a plurality of auxiliary rods 10 are fixed on the outer wall of a fixed rod 5, a plurality of crushing teeth are fixed on the outer wall of each auxiliary rod 10, and the bottom ends of the auxiliary;

the heat preservation shell 9 is arranged into a cylindrical structure, the inner wall of the heat preservation shell 9 is in threaded connection with the outer wall of the connecting cylinder 3, a limiting piece 12 is fixed at the top of the outer wall of the connecting cylinder 3, the bottom of the limiting piece 12 is in abutting connection with the top of the heat preservation shell 9, a limiting strip 13 with an annular structure is fixed at the top of the heat preservation shell 9, a position of the bottom of the limiting piece 12 corresponding to the limiting strip 13 is provided with a matched limiting groove, the bottom end of the inner wall of the heat preservation shell 9 is fixed with a sealing ring 14, and the bottom end of the outer wall of the connecting cylinder 3 is provided with a sealing groove 15 with an annular structure, the inner wall of the sealing ring 14 is in threaded connection with the inner wall of the sealing groove 15, the top of the sealing ring 14 is abutted against the inner wall of the top of the sealing groove 15, a raised strip 16 with an annular structure is fixed at the top of the sealing ring 14, and the inner wall of the top of the sealing groove 15 is provided with a connecting groove 17 matched with the raised strip 16, and the outer wall of the top of the raised strip 16 is arranged to be in a sawtooth structure.

When the plastic material injection molding machine is used, a part of plastic raw materials are fed into the melting cavity 4 in the connecting cylinder 3 by the first spiral blade 6 and the second spiral blade 7, then the part of the plastic raw materials are heated and melted by the heating coil 8 on the outer wall of the connecting cylinder 3, and the melted plastic raw materials are fed out by the second spiral blade 7, so that the situation that a large amount of plastic raw materials in the filling cylinder 1 are directly melted and energy consumption is reduced can be avoided, the situation that the quality is reduced due to repeated changes of the plastic raw materials in the process that the raw materials in the filling cylinder 1 are temporarily cooled after being completely melted can be avoided, and the overall quality of injection molding operation is improved;

supplementary groove 11 and the outside 8 interval distribution's of heating coil of connecting cylinder 3 setting, thereby improve the heating effect to melting in the chamber 4, and utilize spacing 13 and the spacing groove of top looks adaptation to increase the leakproofness between 9 tops of heat preservation casing and locating part 12, the sand grip 16 and the connecting groove 17 that utilize bottom looks adaptation increase the leakproofness of heat preservation casing 9 bottoms, thereby guarantee the thermal make full use of heating coil 8, and improve the dampproofing taking precautions against of heating coil 8, the life of extension equipment.

Example 2

Referring to fig. 1-4, a raw material melting device for injection molding, the inner wall of the top of a melting chamber 4 is provided with a plurality of through holes 18 communicated with a storage chamber 2, and the inner wall of the top of each through hole 18 is fixed with a filter screen 19.

When the injection molding device is used, the through hole 18 is communicated with the storage cavity 2 to lead out bubbles and gas generated by heating and melting in the melting cavity 4, so that the phenomenon that excessive bubbles in the melted plastic raw material influence the quality of subsequent injection molding operation is avoided.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A raw material melting device for injection molding comprises a filling cylinder (1) and is characterized in that a storage cavity (2) is arranged in the filling cylinder (1), a feed inlet is arranged on one side of the top of the storage cavity (2), a connecting cylinder (3) extending downwards is fixed at the bottom end of the outer wall of the filling cylinder (1), a melting cavity (4) is arranged in the connecting cylinder (3), a heating mechanism is arranged on the outer wall of the connecting cylinder (3), a fixed rod (5) is rotatably connected at the middle position of the inner wall of the top of the packing cylinder (1), the top end of the fixed rod (5) is connected with a rotating motor in a transmission way, a first helical blade (6) is fixed at the position of the outer wall of the fixed rod (5) corresponding to the discharge hole at the bottom end of the filling cylinder (1), and a second helical blade (7) is fixed at the position where the outer wall of the fixed rod (5) corresponds to the inner wall of the connecting cylinder (3).

2. A raw material melting device for injection molding according to claim 1, characterized in that the outer wall of the connecting cylinder (3) is provided with a plurality of mounting grooves with annular structures, the heating mechanism is provided with a heating coil (8) fixed on the inner wall of the mounting groove, the outer wall of the connecting cylinder (3) is fixed with a heat preservation shell (9), the inner wall of the connecting cylinder (3) is provided with a plurality of auxiliary grooves (11) with annular structures, and the auxiliary grooves (11) and the heating coil (8) are arranged in a spaced distribution manner.

3. A raw material melting device for injection molding according to claim 1 or 2, characterized in that two crushing rolls are rotatably connected to the bottom of the feeding port between the inner walls of the two ends of the filling cylinder (1), and the crushing rolls are in transmission connection with a driving motor.

4. A material melting apparatus for injection molding according to claim 3, wherein a plurality of auxiliary rods (10) are fixed to an outer wall of the fixing rod (5), and a plurality of crushing teeth are fixed to an outer wall of the auxiliary rods (10).

5. A raw material melting device for injection molding according to claim 2, characterized in that the heat preservation shell (9) is provided in a cylindrical structure, the inner wall of the heat preservation shell (9) is in threaded connection with the outer wall of the connecting cylinder (3), a limiting member (12) is fixed on the top of the outer wall of the connecting cylinder (3), and the bottom of the limiting member (12) abuts against the top of the heat preservation shell (9).

6. A raw material melting device for injection molding according to claim 5, characterized in that a ring-structured limiting strip (13) is fixed on the top of the heat-insulating housing (9), and a matched limiting groove is formed at the position of the bottom of the limiting piece (12) corresponding to the limiting strip (13).

7. A raw material melting device for injection molding according to claim 5, characterized in that a sealing ring (14) is fixed at the bottom end of the inner wall of the heat-insulating casing (9), a sealing groove (15) with an annular structure is formed at the bottom end of the outer wall of the connecting cylinder (3), the inner wall of the sealing ring (14) is in threaded connection with the inner wall of the sealing groove (15), and the top of the sealing ring (14) abuts against the inner wall of the top of the sealing groove (15).

8. A raw material melting device for injection molding according to claim 7, wherein a protruding strip (16) with an annular structure is fixed on the top of the sealing ring (14), and a connecting groove (17) adapted to the protruding strip (16) is formed on the inner wall of the top of the sealing groove (15).

9. A material melting apparatus for injection molding according to claim 8, wherein the top outer wall of the rib (16) is formed in a zigzag structure.

10. A raw material melting device for injection molding according to claim 3, characterized in that a plurality of perforations (18) communicating with the storage chamber (2) are formed on the inner wall of the top of the melting chamber (4), and a filter screen (19) is fixed to the inner wall of the top end of each perforation (18).