CN113696436B

CN113696436B - Staggered injection molding machine with screw cylinder cavity

Info

Publication number: CN113696436B
Application number: CN202110926098.3A
Authority: CN
Inventors: 张衡
Original assignee: Shenzhen Days Xingheng Plastic Electronic Technology Co ltd
Current assignee: Shenzhen Days Xingheng Plastic Electronic Technology Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2023-06-16
Anticipated expiration: 2041-08-12
Also published as: CN113696436A

Abstract

The invention discloses a staggered injection molding machine with screw cylinder cavities, wherein a screw cylinder main body for heating raw materials is arranged on a workbench at one side of an injection molding machine body, the screw cylinder main body further comprises a first screw cylinder shell and a second screw cylinder shell, the lower part of the first screw cylinder shell is fixed on the workbench at one side of the injection molding machine body through bolts and is used for fixing the first screw cylinder shell on the upper end face of the injection molding machine body, and the material conveying transmission of a material conveying screw rod in a material conveying cavity is ensured. This staggered injection molding machine of spiral shell section of thick bamboo cavity that is equipped with, through the improvement to injection molding machine spiral shell section of thick bamboo structure, can be when maintaining the spiral shell section of thick bamboo, conveniently to the inside clearance and the maintenance of spiral shell section of thick bamboo to conveniently shift out feeding screw rod, simultaneously, to the improvement of hot plate shape and mounting means, improved the installation effectiveness of hot plate.

Description

Staggered injection molding machine with screw cylinder cavity

Technical Field

The invention relates to the technical field of screw barrels of injection molding machines, in particular to a staggered injection molding machine with screw barrel cavities.

Background

In the process of using and maintaining the injection molding machine, foreign matters are inevitably stored in raw materials, the abrasion of the inner wall of the cavity in the screw barrel of the injection molding machine is likely to be caused, the damage of the feeding screw is also caused, and the screw barrel of the injection molding machine is further required to be disassembled, cleaned and maintained.

For example, the reference application number: CN200810027245.8, authorized bulletin day: 20101117, an injection molding machine's injection molding machine includes extrusion mechanism, injection device and two at least moulds, its characterized in that: the injection device is connected with each mould through at least one material distributing mechanism. The feed mechanism comprises a shell, at least one switching rod and reciprocating mechanisms with the same number as the switching rods, a feed hole and at least one discharge hole are arranged in the shell, an inlet of the feed hole is connected with an outlet of the injection device, an outlet of each discharge hole is connected with an inlet of a corresponding die, an outlet of the feed hole and an inlet of each discharge hole are connected with the switching rods, the tail ends of the switching rods are connected with the reciprocating mechanisms, the front ends of the switching rods are inserted into the shell, and connecting grooves which are the same as the discharge holes in number and can be communicated with the outlet of the feed hole and the corresponding discharge hole are formed in the switching rods. The device is mainly provided with a distributing mechanism, can effectively reduce the waiting time of the injection molding mechanism, can greatly improve the working efficiency of the injection molding machine, reduces the energy consumption,

however, the screw cylinder of the injection molding machine has the following problems in use:

1. the screw barrel structure is a single screw barrel structure formed integrally, when the screw barrel needs to be maintained, the whole screw barrel needs to be dismantled, and the feed screw is inconvenient to dismantle;

2. the heating plate is usually fixed outside the heating screw cylinder, but when the heating plate is installed, the heating plate needs to be fixed outside the screw cylinder and connected with the lead wire one by one through bolts, and the installation process is tedious and time-consuming.

Disclosure of Invention

The invention aims to provide a staggered injection molding machine with screw cylinder cavities, which aims to solve the problems that in the prior art, the screw cylinder structure of the existing injection molding machine in the market is an integrally formed single screw cylinder structure when in use, the whole screw cylinder needs to be detached when the screw cylinder needs to be maintained, the detachment of a feeding screw is inconvenient, a heating plate is usually fixed outside the heating screw cylinder, but the heating plate needs to be fixed outside the screw cylinder one by one through bolts and connected with a wire when the heating plate is installed, and the installation process is complex and time-consuming.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a screw barrel cavity's that is equipped with stagger injection molding machine, install the screw barrel main part that is used for to raw materials heating on the workstation of one side of injection molding machine body, the screw barrel main part still includes first screw barrel casing and second screw barrel casing, first screw barrel casing, the lower part of first screw barrel casing is in through the bolt fastening on the workstation of one side of injection molding machine body, be used for first screw barrel casing is in the installation of injection molding machine body up end is fixed, second screw barrel casing, the second screw barrel casing passes through the bolt fastening in the front side of first screw barrel casing, first screw barrel casing with the material conveying chamber has all been seted up to the inboard of second screw barrel casing, realizes first screw barrel casing with the second screw barrel casing constitutes a accomplished screw barrel main part, the inner of first screw barrel casing is seted up and is used for wearing to establish the screw mounting hole of pay-off screw rod, the inner of pay-off screw rod with the output of motor on the injection molding machine body is connected, guarantees that the pay-off of motor is in the material conveying chamber is inside.

Further, the lower part of the front side of the first screw cylinder shell is provided with a butt joint sliding groove for installing the second screw cylinder shell, the butt joint sliding groove is aligned with a butt joint limit port at one end of the first screw cylinder shell, bottom installation holes for installing fixing bolts are distributed in the middle of the butt joint sliding groove at equal intervals, the lower end of the first screw cylinder shell is positioned in the butt joint sliding groove at the lower part of the second screw cylinder shell, the lower fixing part at the side of the lower end of the two screw cylinder shells is fixedly connected with the lower end of the first screw cylinder shell through bolts, the upper end of the first screw cylinder shell and the upper end of the second screw cylinder shell are both connected through upper fixing parts through bolts, through setting up the spiral shell section of thick bamboo main part into two parts of first spiral shell section of thick bamboo casing and second spiral shell section of thick bamboo casing, can realize the dismantlement to the spiral shell section of thick bamboo main part, make things convenient for the maintenance workman to the maintenance of spiral shell section of thick bamboo main part internal cavity.

Further, the side walls of the first screw cylinder shell and the second screw cylinder shell are respectively provided with a heating cavity for installing an arc heating plate, the heating cavities penetrate through one ends of the first screw cylinder shell and the second screw cylinder shell, which are far away from the screw rod installing holes, the inner screw threads of the adjusting holes on the outer sides of the side walls of the first screw cylinder shell and the second screw cylinder shell are connected with adjusting bolts, the inner ends of the adjusting bolts are connected with a push plate structure through bearings, pushing ports communicated with the heating cavities are formed above the side walls of the first screw cylinder shell and the second screw cylinder shell in a penetrating way, the arc heating plates are inserted in the inner butt joint way of the heating cavities, the thickness of the arc heating plates is smaller than that of the heating cavities, the inner side walls of the arc heating plates are attached to the side walls of the heating cavities, the arc-shaped heating plate is characterized in that a strip-shaped limit groove which is arranged corresponding to the strip-shaped limit structure is formed in the outer side wall of the arc-shaped heating plate, a limit hole which is arranged corresponding to the locating column is formed in the middle of the other end of the arc-shaped heating plate, conductive openings are formed in the arc-shaped heating plates on the upper side and the lower side of the limit hole in an axisymmetric mode, the innermost arc-shaped heating plate is only provided with the conductive openings and the limit holes, the outermost arc-shaped heating plate is only provided with the conductive column and the locating column, one end far away from the conductive column is provided with an energizing lead, a locating column is integrally formed in the middle of one end of the arc-shaped heating plate, the upper side and the lower side of the locating column are provided with the conductive columns in an axisymmetric mode, the upper side and the lower side of the conductive column are respectively provided with positive poles and negative poles, pushing and butting of the arc-shaped heating plate in the heating cavity can be realized, and the arc-shaped heating plate is convenient and quick, the steps of installing screws on the arc heating plates one by maintenance workers and the connection of wires are reduced.

Further, the shape structure of heating cavity is circular-arc structure, first spiral shell section of thick bamboo casing with the second spiral shell section of thick bamboo casing is close to integrative strip limit structure that has the level to set up on the heating cavity inner wall, when inserting the heating cavity with the arc hot plate inside, can realize the stable push of arc hot plate, avoid the crooked of arc hot plate, make things convenient for butt joint between the adjacent arc hot plate.

Further, the push plate structure is located inside the laminating groove on the heating cavity side wall, the outside of push plate structure with the edge parallel and level setting in laminating groove, after the arc-shaped heating plate is installed, the arc-shaped heating plate is promoted to the accessible regulation push plate structure, realizes hugging closely of arc-shaped heating plate and spiral shell section of thick bamboo main part inner wall.

Compared with the prior art, the invention has the beneficial effects that: according to the staggered injection molding machine with the screw cylinder cavity, through improvement of the screw cylinder structure of the injection molding machine, the screw cylinder can be split for treatment when being maintained, so that the inside of the screw cylinder is convenient to clean and maintain, the feeding screw is convenient to move out, and meanwhile, the installation efficiency of the heating plate is improved according to the improvement of the shape and the installation mode of the heating plate;

1. the screw cylinder main body is arranged into the first screw cylinder shell and the second screw cylinder shell, so that the first screw cylinder shell and the second screw cylinder shell on the screw cylinder main body can be split, thereby being convenient for maintenance workers to overhaul and replacing a single first screw cylinder shell or a single second screw cylinder shell, and reducing the replacement cost;

2. the middle parts of the outer walls of the first screw cylinder shell and the second screw cylinder shell are provided with heating cavities with one ends being open, the installation of the arc heating plates can be realized, the inner walls of the heating cavities are provided with strip-shaped limiting structures, the arc heating plates can slide into the heating cavities in a limiting way through the strip-shaped limiting grooves, the arc heating plates are conveniently and quickly installed by being butted with the conducting openings and the limiting holes on the adjacent arc heating plates through the conducting columns and the locating columns, meanwhile, the outer walls of the first screw cylinder shell and the second screw cylinder shell are provided with adjusting holes, the adjusting bolts in the adjusting holes can be adjusted, the pushing plate structures at the outer ends of the adjusting bolts tightly push the arc heating plates, the arc heating plates are conveniently clung to the inner walls of the heating cavities, and the heating effect is improved;

3. the pushing ports are formed in the outer walls of the first screw cylinder shell and the second screw cylinder shell, and when the arc-shaped heating plate needs to be disassembled, the arc-shaped heating plate inside the heating cavity can be pushed out through the pushing ports, so that the device is simple and quick.

Drawings

FIG. 1 is a schematic diagram of the front view of the injection molding machine body and screw cylinder body of a staggered injection molding machine with screw cylinder cavities;

FIG. 2 is a schematic view of a cross-sectional structure of a portion A-A in FIG. 1 of a staggered injection molding machine with screw cylinder cavities according to the present invention;

FIG. 3 is a schematic top view of a first screw shell of a staggered injection molding machine with screw cavities according to the present invention;

FIG. 4 is an enlarged schematic view of the structure of the point A in FIG. 2 of a staggered injection molding machine with screw cavities according to the present invention;

FIG. 5 is a schematic view of the internal structure of a first screw shell of a staggered injection molding machine with screw cavities according to the present invention;

FIG. 6 is a schematic view of an arc-shaped heating plate of an offset injection molding machine with screw cylinder cavities according to the present invention;

fig. 7 is a schematic view of the outer side structure of an arc-shaped heating plate of an offset injection molding machine with screw cylinder cavities.

In the figure: 1. an injection molding machine body; 2. a screw cylinder body; 3. a first screw shell; 4. a second screw shell; 5. a butt joint limit port; 6. an upper fixing part; 7. a lower fixing part; 8. an adjustment aperture; 9. a butt-joint sliding groove; 10. a bottom mounting hole; 11. a feed screw; 12. a heating cavity; 13. an arc-shaped heating plate; 14. a strip-shaped limit structure; 15. a material conveying cavity; 16. an adjusting bolt; 17. a bonding groove; 18. a push plate structure; 19. screw mounting holes; 20. a conductive opening; 21. a limiting hole; 22. a strip-shaped limit groove; 23. a conductive post; 24. positioning columns; 25. and (5) pushing the mouth.

Detailed Description

All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a spiral shell section of thick bamboo cavity stagger formula injection molding machine that is equipped with installs on the workstation of one side of injection molding machine body 1 and is used for heating raw materials's spiral shell section of thick bamboo main part 2, its characterized in that:

the screw cylinder body 2, the screw cylinder body 2 also comprises a first screw cylinder shell 3 and a second screw cylinder shell 4;

the lower part of the first screw cylinder shell 3 is fixed on a workbench at one side of the injection molding machine body 1 through bolts and is used for mounting and fixing the first screw cylinder shell 3 on the upper end face of the injection molding machine body 1;

the second screw shell body 4 is fixed on the front side of the first screw shell body 3 through bolts, and the inner sides of the first screw shell body 3 and the second screw shell body 4 are provided with a material conveying cavity 15, so that the first screw shell body 3 and the second screw shell body 4 form a finished screw shell body 2;

the inner end of the first screw shell 3 is provided with a screw mounting hole 19 for penetrating the feeding screw 11, the inner end of the feeding screw 11 is connected with the output end of the motor on the injection molding machine body 1, the feeding screw 11 is guaranteed to be in conveying transmission in the conveying cavity 15, the lower part of the front side of the first screw shell 3 is provided with a butt joint sliding groove 9 for mounting the second screw shell 4, the butt joint sliding groove is aligned with the butt joint limiting opening 5 at one end of the first screw shell 3, bottom mounting holes 10 for mounting fixing bolts are distributed in the middle of the butt joint sliding groove 9 at equal intervals, the lower end of the first screw shell 3 is located in the butt joint sliding groove 9 at the lower part of the second screw shell 4, the lower fixing part 7 at the side of the lower end of the second screw shell 4 is fixedly connected with the lower end of the first screw shell 3 through bolts, the upper end of the first screw shell 3 and the upper end of the second screw shell 4 are connected through the upper fixing part 6 bolts, and the improvement of the structure of the screw shell body 2 is convenient for cleaning and processing the inside the screw shell body 2.

The heating cavity 12 for installing the arc-shaped heating plates 13 is formed in the side walls of the first screw shell body 3 and the second screw shell body 4, the heating cavity 12 penetrates through one ends of the first screw shell body 3 and the second screw shell body 4, which are far away from the screw installation holes 19, and a certain number of arc-shaped heating plates 13 are conveniently installed inside the heating cavity 12 through the arrangement of the heating cavity 12, so that bolts are prevented from being used for installing one by one single arc-shaped heating plate 13, and the installation and the disassembly amount of the bolts are reduced.

The inner threads of the adjusting holes 8 on the outer sides of the side walls of the first screw shell 3 and the second screw shell 4 are connected with adjusting bolts 16, the inner ends of the adjusting bolts 16 are connected with push plate structures 18 through bearings, pushing ports 25 communicated with the heating cavity 12 are formed in the upper portions of the side walls of the first screw shell 3 and the second screw shell 4 in a penetrating mode, and pushing out of the arc-shaped heating plates 13 inside the heating cavity 12 is achieved through the pushing ports 25 through the arrangement of the pushing ports 25.

The shape structure of the heating cavity 12 is an arc-shaped structure, the first screw cylinder shell 3 and the second screw cylinder shell 4 are close to a strip-shaped limit structure 14 which is horizontally arranged on the inner wall of the heating cavity 12, an arc-shaped heating plate 13 is inserted in a butt joint mode in the heating cavity 12, the thickness of the arc-shaped heating plate 13 is smaller than that of the heating cavity 12, the inner side wall of the arc-shaped heating plate 13 is attached to the side wall of the heating cavity 12, a strip-shaped limit groove 22 which is arranged corresponding to the strip-shaped limit structure 14 is formed in the outer side wall of the arc-shaped heating plate 13, the arc-shaped heating plate 13 can be guaranteed to horizontally move in the heating cavity 12 through the arrangement of the strip-shaped limit structure 14, and butt joint installation between the adjacent arc-shaped heating plates 13 is facilitated;

the push plate structure 18 is located the laminating groove 17 inside on the heating cavity 12 lateral wall, the outside of push plate structure 18 and the edge parallel and level setting of laminating groove 17, the one end middle part integrated into one piece of arc hot plate 13 has reference column 24, be axisymmetrically on the arc hot plate 13 of both sides about the reference column 24 and be provided with conductive post 23, upper and lower 2 conductive posts 23 are positive and negative pole setting respectively, limit hole 21 that corresponds the setting with reference column 24 has been seted up at the other end middle part of arc hot plate 13, be axisymmetrically on the arc hot plate 13 of limit hole 21 upper and lower both sides and be provided with conductive opening 20, the arc hot plate 13 of innermost is provided with conductive opening 20 and limit hole 21, the arc hot plate 13 of outermost is provided with conductive post 23 and reference column 24 only, and be provided with the wire that is used for switching on in keeping away from the one end of conductive post 23, can be in the inside alignment of a plurality of arc hot plates 13 back of heating cavity 12, it is tight to push plate structure 18 to carry out the top to arc hot plate 13, avoid arc hot plate 13 to remove and misplace in heating cavity 12 inside.

Working principle: when the staggered injection molding machine with the screw cylinder cavities is used, as shown in fig. 1-3 and 5, a first screw cylinder shell 3 is fixed on an installation table at the upper part of an injection molding machine body 1, then bolts are used for penetrating through the side sides of the first screw cylinder shell 3 and a bottom installation hole 10 on the butt joint sliding groove 9, the first screw cylinder shell 3 is further fixed, a feeding screw rod 11 is placed into a feeding cavity 15 at the inner side of the first screw cylinder shell 3, the connecting end of the feeding screw rod 11 penetrates through a screw rod installation hole 19 on the first screw cylinder shell 3 and is connected with the output end of a motor on the injection molding machine body 1, then the bottom of a second screw cylinder shell 4 is placed into a butt joint sliding groove 9 at the bottom of the first screw cylinder shell 3, the inner end of the second screw cylinder shell 4 is in butt joint with a butt joint limiting hole 5 on the first screw cylinder shell 3, and a bottom fixing part 7 and a top fixing part 6 of the second screw cylinder shell 4 are in butt joint with the butt joint limiting hole 5 on the first screw cylinder shell 3, and the first screw cylinder shell 3 is fastened with the screw rod 3, and the first screw cylinder shell 3 is installed on the first screw cylinder shell 2;

as shown in fig. 2-3 and fig. 5-7, a first arc heating plate 13 without conductive posts 23 and positioning posts 24 is first placed into a heating cavity 12 on the side wall of a first screw shell 3 or a second screw shell 4, and strip-shaped limit grooves 22 on the outer side of the arc heating plate 13 are aligned with strip-shaped limit structures 14 on the inner wall of the heating cavity 12, at this time, the arc heating plate 13 can be pushed into the heating cavity 12, then the arc heating plate 13 with the conductive posts 23 and the positioning posts 24 is pushed into the heating cavity 12, the conductive posts 23 and the positioning posts 24 on the second arc heating plate 13 are respectively inserted into conductive openings 20 and limit holes 21 on the outer end of the first arc heating plate 13, and finally, pushing the rest arc heating plates 13 with the conductive columns 23 and the positioning columns 24 into the heating cavity 12 according to the same steps, screwing the adjusting bolts 16 in the adjusting holes 8 of the outer side walls of the first screw cylinder shell 3 or the second screw cylinder shell 4 by using a screwdriver, and driving the push plate structure 18 in the attaching groove 17 to tightly push the arc heating plates 13 in the heating cavity 12 under the engagement of the adjusting bolts 16 with the threads of the outer side walls of the first screw cylinder shell 3 or the second screw cylinder shell 4, so as to fix the arc heating plates 13, and connecting the wires on the outermost arc heating plates 13 with an external power supply.

It should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. refer to the directions or positions based on the directions or positions shown in the drawings, and are merely for convenience in describing the present invention, and are not intended to indicate or imply that the apparatus or element referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the protection of the present invention, standard parts used in the present invention may be purchased from the market, special parts may be customized according to the descriptions of the specification and the drawings, and the specific connection manners of the parts may be conventional manners in the prior art, such as bolts, rivets, welding, etc., and the mechanical, part and apparatus are conventional manners in the prior art, and the circuit connection is also conventional manners in the prior art, which are not further described herein.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features thereof, and any modifications, equivalent substitutions, improvements and other modifications within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A staggered injection molding machine with screw cylinder cavities is characterized in that a screw cylinder main body (2) for heating raw materials is arranged on a workbench on one side of an injection molding machine body (1):

the screw cylinder comprises a screw cylinder body (2), wherein the screw cylinder body (2) further comprises a first screw cylinder shell (3) and a second screw cylinder shell (4);

the lower part of the first screw shell (3) is fixed on a workbench at one side of the injection molding machine body (1) through bolts, and is used for mounting and fixing the first screw shell (3) on the upper end face of the injection molding machine body (1);

the second screw shell body (4), the second screw shell body (4) is fixed on the front side of the first screw shell body (3) through bolts, the inner sides of the first screw shell body (3) and the second screw shell body (4) are provided with a material conveying cavity (15), and the first screw shell body (3) and the second screw shell body (4) form a finished screw shell body (2);

the inner end of the first screw cylinder shell (3) is provided with a screw rod mounting hole (19) for penetrating the feeding screw rod (11), and the inner end of the feeding screw rod (11) is connected with the output end of the motor on the injection molding machine body (1) to ensure that the feeding screw rod (11) is in feeding transmission in the feeding cavity (15);

the side walls of the first screw shell body (3) and the second screw shell body (4) are respectively provided with a heating cavity (12) for installing an arc heating plate (13), and the heating cavities (12) penetrate through one end, far away from the screw mounting holes (19), of the first screw shell body (3) and the second screw shell body (4);

an adjusting bolt (16) is connected with an adjusting hole (8) on the outer side of the side wall of the first screw shell (3) and the outer side of the side wall of the second screw shell (4) in an internal thread manner, the inner end of the adjusting bolt (16) is connected with a push plate structure (18) through a bearing, and a pushing port (25) communicated with the heating cavity (12) is formed above the side wall of the first screw shell (3) and the side wall of the second screw shell (4) in a penetrating manner;

the heating cavity (12) is of an arc-shaped structure, and the first screw shell (3) and the second screw shell (4) are close to the inner wall of the heating cavity (12) and are integrally provided with a strip-shaped limiting structure (14) which is horizontally arranged;

the arc-shaped heating plates (13) are inserted in the heating cavity (12) in a butt joint mode, the thickness of each arc-shaped heating plate (13) is smaller than that of each heating cavity (12), the inner side walls of the arc-shaped heating plates (13) are attached to the side walls of the heating cavity (12), and strip-shaped limiting grooves (22) which are arranged corresponding to the strip-shaped limiting structures (14) are formed in the outer side walls of the arc-shaped heating plates (13);

a positioning column (24) is integrally formed in the middle of one end of the arc-shaped heating plate (13), conductive columns (23) are axially symmetrically arranged on the arc-shaped heating plates (13) on the upper side and the lower side of the positioning column (24), and the upper side and the lower side of the conductive columns (23) are respectively provided with positive poles and negative poles;

limiting holes (21) which are correspondingly arranged with positioning columns (24) are formed in the middle of the other end of the arc-shaped heating plate (13), conductive openings (20) are formed in the arc-shaped heating plates (13) on the upper side and the lower side of the limiting holes (21) in an axisymmetric mode, the innermost arc-shaped heating plate (13) is only provided with the conductive openings (20) and the limiting holes (21), the outermost arc-shaped heating plate (13) is only provided with the conductive columns (23) and the positioning columns (24), and one ends, far away from the conductive columns (23), of the arc-shaped heating plate are provided with conductive wires.

2. The staggered injection molding machine with screw barrel cavities according to claim 1, wherein: the utility model discloses a screw shell, including first screw shell body (3), second screw shell body (4), first screw shell body (3) front side lower part is offered and is used for the installation in butt joint sliding tray (9) of second screw shell body (4), and with in butt joint limiting port (5) of first screw shell body (3) one end aligns, the middle part equidistance of connecting sliding tray (9) distributes has bottom mounting hole (10) that are used for installing fixing bolt, the lower extreme of first screw shell body (3) is located in the sliding tray (9) of second screw shell body (4) lower extreme avris, lower part fixed part (7) of second screw shell body (4) pass through bolt and the lower extreme fixed connection of first screw shell body (3), the upper end of first screw shell body (3) with the upper end of second screw shell body (4) all passes through upper portion fixed part (6) bolted connection.

3. The staggered injection molding machine with screw barrel cavities according to claim 1, wherein: the push plate structure (18) is located inside the laminating groove (17) on the side wall of the heating cavity (12), and the outer side of the push plate structure (18) is flush with the edge of the laminating groove (17).