CN211334436U - An injection molding machine screw barrel assembly - Google Patents

Abstract

The utility model discloses a screw and barrel assembly of an injection molding machine, which comprises a barrel, an inner wall of the barrel is fixedly connected with a barrel bushing, and a driving device is fixedly connected to the inner right side of the barrel, and the barrel bushing is fixedly connected. An outer screw is arranged in the inside of the machine, and the utility model relates to the technical field of injection molding machines. The screw and barrel assembly of the injection molding machine increases the gap between the polymer and the barrel bushing and the outer screw by arranging the inner screw inside the outer screw, and using the inner screw to absorb heat to provide heat energy for the outer screw and increase the rotation force of the outer screw. Interfacial shearing occurs at the interface to generate huge internal friction heat to achieve rapid and efficient melting of the polymer, and then the cylindrical rod is used to rotate in the cylindrical tube, so that one side of the trough is connected to the side of the fine groove, so that the material enters the barrel through the trough. Because of the material distribution mechanism, the waiting time of the injection molding mechanism can be effectively reduced, the working efficiency of the injection molding machine can be greatly improved, and the energy consumption can be reduced.

Description

An injection molding machine screw barrel assembly

technical field

The utility model relates to the technical field of injection molding machines, in particular to a screw and barrel assembly of an injection molding machine.

Background technique

Plastic machines are also known as injection molding machines or injection molding machines. It is the main molding equipment for making thermoplastics or thermosetting plastics into various shapes of plastic products using plastic molding dies. Divided into vertical, horizontal, all-electric. The injection molding machine heats the plastic, applying high pressure to the molten plastic so that it is ejected to fill the mold cavity. The working principle of the injection molding machine is similar to that of a syringe for injection. It uses the thrust of the screw (or plunger) to inject the plasticized plastic in the molten state (that is, the viscous state) into the closed mold cavity. The process of obtaining products after curing and shaping. Injection molding is a cycle process, each cycle mainly includes: quantitative feeding - melt plasticization - pressure injection - mold filling and cooling - mold opening and taking out. After the plastic parts are taken out, the mold is closed again for the next cycle.

In the existing screw and barrel components of injection molding machines, most of the injection molding mechanisms use a separate extrusion mechanism for extrusion injection molding, resulting in only one injection molding in a working cycle, and the work efficiency is low, and the screw and barrel components use a single-screw structure. , the heat energy generated by the single screw is small, the melting state of the polymer is poor, and the extruded material is uneven.

Utility model content

(1) Technical problems solved

In view of the deficiencies of the prior art, the utility model provides a screw and barrel assembly of an injection molding machine, which solves the problem that the existing screw and barrel assembly of an injection molding machine can only perform injection once in a working cycle, and the screw and barrel assembly adopts a single screw structure, the heat energy generated is small, and the polymer melt state is poor.

(2) Technical solutions

In order to achieve the above purpose, the utility model is realized through the following technical solutions: a screw and barrel assembly of an injection molding machine, comprising a barrel, the inner wall of the barrel is fixedly connected with a barrel bushing, and the right side inside the barrel is fixedly connected There is a driving device, an outer screw is arranged inside the barrel bushing, a square slot is opened inside the outer screw, an inner screw is arranged inside the square slot, and a shell is fixedly connected to the left side of the barrel The inside of the shell is provided with an extrusion groove, the bottom of the shell is fixedly connected with a feeding shell, a connecting groove is opened in the middle of the interior of the feeding shell, and both sides of the interior of the feeding shell are A thin groove is opened, the two thin grooves are communicated with the connecting groove, the top of the connecting groove is connected with a connecting pipe, and the top end of the connecting pipe penetrates the feeding shell and extends to the outside of the feeding shell. The top of the connecting pipe is communicated with the bottom of the extrusion groove, one side of the inner surface of the thin groove is provided with a cylindrical pipe, the inner surface of the cylindrical pipe is movably connected with a cylindrical rod, and one side of the cylindrical rod is provided with a feeding groove, so The top end of the cylindrical rod penetrates through the feeding shell and extends to the outside of the feeding shell, both sides of the bottom of the feeding shell are provided with barrels, and the bottom end of the cylindrical rod penetrates the feeding shell and the barrel in turn and extends to the inside of the barrel.

Preferably, the number of the thin grooves is more than one, and the thin grooves are evenly distributed inside the feed shell and on the outer surface of the square groove.

Preferably, sliding plugs are fixedly connected to both sides of the outer surface of the cylindrical rod, and the outer surfaces of the two sliding plugs are both rotatably connected to the inner surface of the cylindrical tube.

Preferably, an extrusion rod is slidably connected to the inner surface of the extrusion groove, and the top end of the extrusion rod penetrates the casing and extends to the outside of the casing.

Preferably, the number of the barrels is provided in multiples, and the barrels are evenly distributed under the feeding shell.

Preferably, a fixing seat is fixedly connected to one side of the top of the barrel, and a feeding pipe is fixedly connected to the top of the fixing seat.

Preferably, the bottom end of the feed pipe penetrates the fixing base and the barrel in turn and extends to the interior of the barrel, and the top end of the feed pipe is connected with a feed funnel.

Preferably, first water pipes are fixedly connected to the upper and lower sides of the barrel liner, and second water pipes are fixedly connected to the front and rear sides of the barrel liner. The first water pipe and the second water pipe are fixedly connected. They are communicated with each other through an annular pipe.

Preferably, a water tank is fixedly connected to the bottom of the barrel, a water inlet pipe is connected to the left side of the water tank, a water outlet pipe is connected to the right side of the water tank, and a water passage pipe is connected to the surface of the water tank.

Preferably, one end of the water inlet pipe and the water outlet pipe both penetrate through the barrel liner and extend to the inside of the barrel liner, one end of the water inlet pipe is communicated with the surface of the first water pipe, and one end of the water outlet pipe is connected to the first water pipe. The surfaces of the two water pipes are connected.

(3) Beneficial effects

The utility model provides a screw and barrel assembly of an injection molding machine. Compared with the prior art, it has the following beneficial effects:

(1) The screw and barrel assembly of the injection molding machine is provided with a square groove inside the outer screw, an inner screw is arranged inside the square groove, a casing is fixedly connected to the left side of the barrel, and an extrusion is provided inside the casing. The bottom of the shell is fixedly connected with the feeding shell, the middle of the feeding shell is provided with a connecting groove, and the two sides of the interior of the feeding shell are provided with thin grooves, and the two thin grooves are communicated with the connecting groove, and the connecting groove The top of the connecting pipe is connected with a connecting pipe, the top of the connecting pipe penetrates the feeding shell and extends to the outside of the feeding shell, the top of the connecting pipe is communicated with the bottom of the extrusion groove, and one side of the inner surface of the thin groove is provided with a cylindrical pipe. A cylindrical rod is movably connected to the inner surface of the cylindrical rod, and a feeding slot is opened on one side of the cylindrical rod. The top of the cylindrical rod penetrates the feeding shell and extends to the outside of the feeding shell. The bottom end of the screw penetrates the feeding shell and the barrel in turn and extends to the inside of the barrel. By arranging the inner screw inside the outer screw, the inner screw is used to absorb heat to provide heat energy for the outer screw and increase the rotation force of the outer screw to increase. The interfacial shear between the polymer and the gap between the barrel bushing and the outer screw generates huge internal frictional heat, which realizes the rapid and efficient melting of the polymer. The side connection allows the material to enter the barrel through the material trough. Due to the material distribution mechanism, the waiting time of the injection molding mechanism can be effectively reduced. Compared with the existing ordinary injection molding mechanism, the working efficiency of the injection molding machine can be greatly improved. ,Reduce energy consumption.

(2) The screw and barrel assembly of the injection molding machine is fixedly connected with sliding plugs on both sides of the outer surface of the cylindrical rod, and the outer surfaces of the two sliding plugs are rotatably connected with the inner surface of the cylindrical tube, and the inner surface of the extrusion groove is The surface is slidably connected with an extrusion rod. The top of the extrusion rod penetrates the casing and extends to the outside of the casing. By setting a sliding plug on the outer surface of the cylindrical rod, its sealing performance can be enhanced, and the extrusion rod can be easily extruded. materials, high work efficiency.

(3) The screw and barrel assembly of the injection molding machine is fixedly connected with a fixed seat on one side of the top of the barrel, the top of the fixed seat is fixedly connected with a feeding pipe, and the bottom end of the feeding pipe runs through the fixed seat and the barrel in turn. It extends to the inside of the barrel, and the top of the feeding pipe is connected with a feeding funnel. By setting a fixed seat, it is used to enhance the stability of the feeding pipe, and setting a feeding funnel can increase the feeding area.

(4) The screw and barrel assembly of the injection molding machine is fixedly connected with a first water pipe on the upper and lower sides inside the barrel bushing, and a second water pipe is fixedly connected on both the front and rear sides inside the barrel bushing. The water pipe and the second water pipe are connected through a ring-shaped pipe, the bottom of the barrel is fixedly connected with a water tank, the left side of the water tank is connected with a water inlet pipe, and the right side of the water tank is connected with a water outlet pipe, the surface of the water tank is connected with a water pipe, a water inlet pipe One end of the water inlet pipe and the water outlet pipe penetrate through the barrel liner and extend to the inside of the barrel liner. One end of the water inlet pipe is communicated with the surface of the first water pipe, and one end of the water outlet pipe is communicated with the surface of the second water pipe. The first water pipe and the second water pipe are arranged inside the sleeve, which cooperate with the water tank, the water inlet pipe and the water outlet pipe to realize the water circulation. Residues and sticking in the bushing.

Description of drawings

Fig. 1 is the internal structure front view of the utility model;

2 is a front view of the internal structure of the external screw of the utility model;

Figure 3 is a side view of the internal structure of the feed shell of the utility model;

Figure 4 is a top view of the internal structure of the feed shell of the utility model;

Fig. 5 is the partial structure top view of the utility model;

6 is a side view of the internal structure of the barrel bushing of the present invention.

In the figure, 1-barrel, 2-barrel bushing, 3-drive device, 4-external screw, 5-square groove, 6-internal screw, 7-shell, 8-extrusion groove, 9-feed Shell, 10-slot, 11-connecting pipe, 12-cylindrical pipe, 13-cylindrical rod, 14-feed trough, 15-barrel, 16-slide plug, 17-extrusion rod, 18-fixed seat, 19- Feeding pipe, 20-feeding funnel, 21-first water pipe, 22-second water pipe, 23-ring pipe, 24-water tank, 25-water inlet pipe, 26-water outlet pipe, 27-water pipe, 28-connecting tank .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1-6 , an embodiment of the present invention provides a technical solution: a screw and barrel assembly of an injection molding machine, including a barrel 1, a water tank 24 is fixedly connected to the bottom of the barrel 1, and the left side of the water tank 24 is connected with a The water inlet pipe 25, and the right side of the water tank 24 is connected with a water outlet pipe 26, one end of the water inlet pipe 25 and the water outlet pipe 26 both penetrate the barrel liner 2 and extend to the inside of the barrel liner 2, and one end of the water inlet pipe 25 is connected to the first end of the barrel liner 2. The surface of a water pipe 21 is connected to the surface, one end of the water outlet pipe 26 is connected to the surface of the second water pipe 22, the surface of the water tank 24 is connected to a water pipe 27, and the water pipe 27 is connected to an external water pipe. One side of the top of the barrel 1 is fixedly connected with a fixed The seat 18, the top of the fixed seat 18 is fixedly connected with a feeding pipe 19, the bottom end of the feeding pipe 19 sequentially penetrates the fixed seat 18 and the barrel 1 and extends to the interior of the barrel 1, and the top of the feeding pipe 19 is connected with a The feeding funnel 20, the inner wall of the barrel 1 is fixedly connected to the barrel liner 2, and the first water pipe 21 and the second water pipe 22 are arranged inside the barrel liner 2, and the water tank 24, the water inlet pipe 25 and the water outlet pipe 26 are realized. Water circulation, after the hot water is introduced, the viscosity of the polymer in the barrel liner 2 is reduced, and the residue and adhesion of the polymer in the barrel liner 2 are effectively reduced. The upper and lower sides of the barrel liner 2 A first water pipe 21 is fixedly connected to each other, and a second water pipe 22 is fixedly connected to the front and rear sides of the barrel liner 2. The first water pipe 21 and the second water pipe 22 are communicated through an annular pipe 23. A drive device 3 is fixedly connected to the right side of the barrel. The drive device 3 is in the prior art and can drive the outer screw 4 and the inner screw 6 to rotate. An outer screw 4 is arranged inside the barrel bushing 2, and a square is opened inside the outer screw 4. Slot 5, the inside of the square slot 5 is provided with an inner screw 6, the left side of the barrel 1 is fixedly connected with a casing 7, the right side of the casing 7 is communicated with the left side of the barrel 1, and the inside of the casing 7 is provided with extrusion Slot 8, the inner surface of the extrusion slot 8 is slidably connected with an extrusion rod 17, the top of the extrusion rod 17 penetrates the shell 7 and extends to the outside of the shell 7, and the bottom of the shell 7 is fixedly connected with a feed shell 9, A connecting groove 28 is opened in the middle of the interior of the feeding shell 9, and thin grooves 10 are opened on both sides of the interior of the feeding shell 9. The number of the thin grooves 10 is multiple, and the thin grooves 10 are inside the feeding shell 9 and located at the The outer surface of the square groove 5 is evenly distributed, the two thin grooves 10 are communicated with the connecting groove 28, the top of the connecting groove 28 is connected with the connecting pipe 11, and the top of the connecting pipe 11 penetrates the feeding shell 9 and extends to the feeding shell 9 Outside, the top of the connecting pipe 11 is communicated with the bottom of the extrusion groove 8, a cylindrical pipe 12 is provided on one side of the inner surface of the thin groove 10, and a cylindrical rod 13 is movably connected to the inner surface of the cylindrical pipe 12, and the top of the cylindrical rod 13 is connected with The external motor is connected, the two sides of the outer surface of the cylindrical rod 13 are fixedly connected with sliding plugs 16, the outer surfaces of the two sliding plugs 16 are both rotatably connected with the inner surface of the cylindrical pipe 12, and one side of the cylindrical rod 13 is provided with a material slot 14. , the top end of the cylindrical rod 13 penetrates through the feeding shell 9 and extends to the outside of the feeding shell 9, and both sides of the bottom of the feeding shell 9 are provided with barrels 15, and the number of the barrels 15 is provided with multiple The barrels 15 are evenly distributed under the feeding shell 9 , the bottom end of the cylindrical rod 13 penetrates the feeding shell 9 and the barrel 15 in turn and extends to the inside of the barrel 15 , by setting the inner screw 6 inside the outer screw 4 , use the inner screw 6 to absorb heat to provide heat energy for the outer screw 4 and increase the rotational force of the outer screw 4 to increase the interfacial shear between the polymer and the barrel bushing 2 and the outer screw 4, resulting in huge internal friction. heat to achieve rapid and efficient melting of the polymer, and then use the cylindrical rod 13 to rotate in the cylindrical tube 12, so that one side of the trough 14 is connected with the side of the fine groove 10, so that the material enters the barrel 15 through the trough 14. There is a material distribution mechanism, so it can effectively reduce the waiting time of the injection molding mechanism. Compared with the existing ordinary injection molding mechanism, it can greatly improve the working efficiency of the injection molding machine and reduce the energy consumption. At the same time, the contents are not described in detail in this manual. All belong to the prior art known to those skilled in the art.

When in use, first put the material from the feeding hopper 20, enter the barrel 1 through the feeding pipe 19, and at the same time drive the outer screw 4 and the inner screw 6 to rotate through the driving device 3. At this time, the material is transported and the material is melted uniformly. Enter the extrusion groove 8 in the casing 7 from the left side of the barrel 1. At this time, the molten material is extruded through the extrusion rod 17, which further drives the molten material into the connecting pipe 11, and further drives the molten material into the connecting groove 28. At this time, after a plurality of fine grooves 10 are dispersed, and then the external motor is started to drive the cylindrical rod 13 to rotate, and then the sliding plug 16 is driven to rotate on the inner surface of the cylindrical pipe 12, so that the material groove 14 on the side of the cylindrical rod 13 and the fine groove 10 are connected. One side is connected. At this time, the molten material enters the barrel 15 through the trough 14. When the trough 14 on the side of the cylindrical rod 13 is not connected with the side of the fine groove 10, the molten material cannot fall. If a working cycle More injection molding processes can be completed, and the increase can be increased by more times. This is determined by the time and work cycle required for the injection molding process. Generally speaking, for the existing ordinary injection molding mechanism, four molds are more suitable. The injection molding mechanism with faster injection speed can increase the number of molds and further improve work efficiency.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A screw and barrel assembly of an injection molding machine, comprising a barrel (1), the inner wall of the barrel (1) is fixedly connected to a barrel bushing (2), and the right side inside the barrel (1) is fixedly connected with a A drive device (3), an outer screw (4) is arranged inside the barrel bushing (2), characterized in that a square groove (5) is opened inside the outer screw (4), and the square groove An inner screw (6) is arranged inside (5), a casing (7) is fixedly connected to the left side of the barrel (1), and an extrusion groove (8) is opened inside the casing (7), A feeding shell (9) is fixedly connected to the bottom of the shell (7), a connecting groove (28) is opened in the middle of the interior of the feeding shell (9), and both sides of the interior of the feeding shell (9) Both are provided with thin grooves (10), the two thin grooves (10) are communicated with the connecting groove (28), and the top of the connecting groove (28) is communicated with a connecting pipe (11), and the connecting pipe ( The top of 11) penetrates through the feeding shell (9) and extends to the outside of the feeding shell (9), the top of the connecting pipe (11) communicates with the bottom of the extrusion groove (8), and the fine groove (10) One side of the inner surface is provided with a cylindrical tube (12), the inner surface of the cylindrical tube (12) is movably connected with a cylindrical rod (13), and one side of the cylindrical rod (13) is provided with a material trough (14), the The top end of the cylindrical rod (13) penetrates through the feeding shell (9) and extends to the outside of the feeding shell (9), and barrels (15) are provided on both sides of the bottom of the feeding shell (9). The bottom end of (13) penetrates the feeding shell (9) and the barrel (15) in turn and extends to the interior of the barrel (15). 2 . The screw and barrel assembly of an injection molding machine according to claim 1 , wherein the number of the thin grooves ( 10 ) is provided in a plurality, and the thin grooves ( 10 ) are located in the feeding shell ( 9 ). 3 . inside and on the outer surface of the square groove (5) are evenly distributed. 3. The screw and barrel assembly of an injection molding machine according to claim 1, characterized in that: both sides of the outer surface of the cylindrical rod (13) are fixedly connected with sliding plugs (16), and two sliding plugs The outer surfaces of (16) are all rotatably connected to the inner surface of the cylindrical tube (12). 4. The screw and barrel assembly of an injection molding machine according to claim 1, wherein an extrusion rod (17) is slidably connected to the inner surface of the extrusion groove (8), and the extrusion rod (17) is slidably connected to the inner surface of the extrusion groove (8). ) penetrates through the casing (7) and extends to the outside of the casing (7). 5 . The screw and barrel assembly of an injection molding machine according to claim 1 , wherein the number of the barrels ( 15 ) is provided in a plurality, and the barrels ( 15 ) are located in the feeding shell ( 9 ). 6 . evenly distributed below. 6 . The screw and barrel assembly of an injection molding machine according to claim 1 , wherein a fixing seat ( 18 ) is fixedly connected to one side of the top of the barrel ( 1 ), and the A feed pipe (19) is fixedly connected to the top. 7 . The screw and barrel assembly of an injection molding machine according to claim 6 , wherein the bottom end of the feed pipe ( 19 ) penetrates the fixing seat ( 18 ) and the barrel ( 1 ) in sequence and extends to the machine. 8 . Inside the barrel (1), and the top of the feeding pipe (19) is connected with a feeding funnel (20). 8 . The screw and barrel assembly of an injection molding machine according to claim 1 , wherein the upper and lower sides of the barrel bushing ( 2 ) are fixedly connected with first water pipes ( 21 ). 8 . A second water pipe (22) is fixedly connected to both the front and rear sides inside the cylinder liner (2), and the first water pipe (21) and the second water pipe (22) are communicated through an annular pipe (23). 9. The screw and barrel assembly of an injection molding machine according to claim 1, wherein a water tank (24) is fixedly connected to the bottom of the barrel (1), and a left side of the water tank (24) is connected to a A water inlet pipe (25) is provided, and a water outlet pipe (26) is communicated with the right side of the water tank (24), and a water passage pipe (27) is communicated with the surface of the water tank (24). 10. The screw and barrel assembly of an injection molding machine according to claim 9, wherein one end of the water inlet pipe (25) and the water outlet pipe (26) both penetrate the barrel bushing (2) and extend to the machine Inside the cylinder liner (2), one end of the water inlet pipe (25) is communicated with the surface of the first water pipe (21), and one end of the water outlet pipe (26) is communicated with the surface of the second water pipe (22).

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