CN112810085A

CN112810085A - Full-electric injection device driven by meshing

Info

Publication number: CN112810085A
Application number: CN202110165320.2A
Authority: CN
Inventors: 沈海波; 施重驹; 刘万强; 刘志文; 侯钦正; 周宏伟; 郑佳辰; 陆焱伟; 杨森
Original assignee: TEDERIC MACHINERY CO Ltd
Current assignee: TEDERIC MACHINERY CO Ltd
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2021-05-18

Abstract

The invention discloses an engagement-driven all-electric injection device which comprises an injection front plate, a pre-molding plate, an injection rear plate, a pull rod assembly and a gear driving assembly. The pre-molded plate passes through the four pull rods and slides on the pull rods. Two driving motors are arranged below the pre-molding plate and drive the gears to rotate through gear shaft reduction boxes. A driving gear in the gear driving assembly is connected with the pre-molding base through a bearing base, and racks which are correspondingly meshed are arranged on the bottom plate. The flat cable of the pre-molded seat driving motor and the like is placed on the floor in a drag chain sink-trough manner, and the rack is installed in a semi-embedded sink-trough manner, so that the replacement and maintenance can be facilitated. Compared with the prior art, the full-electric injection device driven by meshing has the beneficial effects that: the whole structure adopts a gear and rack driving mode, structural parts adopted by meshing driving are easier to replace and maintain, the bearing capacity of the gear and rack is large, the transmission precision is higher, and the transmission speed can be very high, so that the injection force is improved on the premise of meeting the injection speed.

Description

Full-electric injection device driven by meshing

Technical Field

The patent relates to the field of injection molding machines for injection molding, in particular to an injection device for meshing transmission of a full-electric injection molding machine.

Background

With the rapid development of injection molding equipment, the application range of all-electric injection molding machines is continuously expanded. The injection structure of the traditional full-electric injection molding machine at present adopts a single-screw or double-screw driving mode, but is mostly applied to small and medium-sized injection molding equipment. The required injection force is higher for the ultra-large type full-electric injection molding machine, the traditional single-screw or double-screw driving scheme provides extremely high requirements for the performance of the ball screw, and almost no screw can meet the requirements for load, service life and reliability.

The prior patent number CN107457970A discloses a full-electric injection device with four lead screws and four motors, which comprises: injection frame, lead screw subassembly, power component. The injection rack comprises an injection platform rear plate, an injection platform front plate, a pre-molding seat and an injection pull rod for connecting the injection platform rear plate and the injection platform front plate, wherein the pre-molding seat slides on the injection platform pull rod; the injection machine comprises a pre-molding base, a screw rod assembly, a guide rail assembly and a guide rail, wherein the injection machine comprises an injection rack, four groups of injection molding bases and a guide rail, the injection molding bases are symmetrically arranged on the injection rack, and the screw rod assembly drives the pre-molding base to move; the power assemblies are provided with four groups and are arranged on the front plate of the injection platform, and the power assemblies are respectively and correspondingly connected with the screw rod assemblies; however, the four groups of motors respectively drive the four groups of screw rods, the synchronism is poor, the four motors are respectively and correspondingly connected with the four screw rod assemblies, the speed deviation factors are more, and the synchronous motion control of the four groups of motors is not easy to realize.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide an engagement-driven full-electric injection device, which overcomes the defect that the traditional screw rod drives an injection seat to generate synchronous deviation, simultaneously overcomes the defect that the strength of the screw rod cannot meet the requirement under the condition of high injection force, and realizes the injection of a plasticized material into a molding cavity under the condition of high injection force.

The technical scheme adopted by the patent for solving the problems is as follows:

an all-electric injection device driven by meshing is characterized by comprising a front injection plate, a pre-plastic plate, a rear injection plate, a pull rod assembly and a gear driving assembly. The pre-molded plate passes through the four pull rods and slides on the pull rods. Two driving motors are arranged below the pre-molding plate and drive the gears to rotate through gear shaft reduction boxes. A driving gear in the gear driving assembly is connected with the pre-molding base through a bearing base, and racks which are correspondingly meshed are arranged on the bottom plate. The cable of the pre-plastic seat driving motor and the like is placed on the floor in a drag chain sinking groove mode.

Furthermore, the driving gear is installed in a semi-exposed supporting mode, and a supporting foot type bearing seat is adopted for installing the gear on the pre-molded plate.

Furthermore, the gear driving motor is installed on the pre-molding plate, and the motor is connected with the gear through the reduction gearbox assembly by adopting a coupling.

Furthermore, a plasticizing motor is installed above the pre-plasticizing plate, and the plasticizing motor is installed with the plasticizing screw component through a plasticizing gear box. The plasticizing screw rod assembly is arranged on the pre-plastic plate, and is assembled with the pre-plastic plate by adopting a sliding bearing in order to realize heavy-load rotation.

Furthermore, the rack is installed on the bottom plate, and the semi-embedded sinking groove is adopted for installation, so that the overall strength of structural assembly is ensured on the premise of convenient replacement and maintenance.

Furthermore, the four pull rod assemblies are symmetrically distributed at four points, so that the pre-molded plate slides upwards to bear the gravity of the pre-molded plate.

Compared with the prior art, the full-electric injection device driven by meshing has the beneficial effects that: the whole structure adopts a gear and rack driving mode, structural parts adopted by meshing driving are easier to replace and maintain, the bearing capacity of the gear and rack is large, the transmission precision is higher, and the transmission speed can be very high, so that the injection force is improved on the premise of meeting the injection speed.

Drawings

FIG. 1 is a front view of an engagement-driven all-electric injection device of the present patent;

fig. 2 is a three-dimensional schematic view of an engagement-driven all-electric injection device of this patent.

In the figure: 1. the injection molding machine comprises a plasticizing cylinder, a front injection plate assembly, a pull rod assembly, a rack, a pre-molding plate, a driving gear, a driving motor, a cable drag chain, a bottom plate, a rear plate, a plasticizing gear box, a plasticizing motor, a screw rod assembly and a charging barrel, wherein the front injection plate assembly is 2, the pull rod assembly is 3, the rack is 4, the pre-molding plate is 5, the driving gear is 6, the driving motor is 7, the cable drag chain is 8, the bottom.

Detailed Description

This patent is further described below in conjunction with the appended drawings.

A large-scale full-electric injection device driven by meshing is shown in figure 1, and the whole structure is used for driving a screw component (13), a plasticizing motor (12) and a plasticizing gear box component (11) to slide on a pull rod (3) by a pre-plasticizing seat (5) so as to achieve the purpose of injecting a plasticizing raw material. The action process is realized through the meshing drive of the bottom driving gear (6) and a rack fixed on a bottom plate (9) of the rack.

Four sets of pull rod assemblies (3) are installed and fixed on the injection front plate (2) and the injection rear plate (10) in the front-back direction, support the front-back sliding of the pre-plastic seat, and are uniformly distributed at four symmetrical points, so that the support strength of the pre-plastic seat (5) is improved, and the plasticizing screw (13) is guaranteed to complete the linear motion of injection. The injection front plate (2) is provided with a batching cylinder (14) and a plasticizing cylinder (1), and the injection front plate (2) is fixed on the bottom plate (9).

The bottom driving gear (6) is symmetrically arranged on the bearing seat on the pre-molded plate (5) in two sides, the driving gear (6) and the bearing seat are assembled through a bearing assembly, and the internal bearing structure adopts a cylindrical roller bearing to improve the structural strength under heavy load. The driving gear (6) is connected with a bottom driving motor (7) through a gear shaft and a reduction box, and the driving motor (7) is symmetrically arranged below the side face of the pre-molding plate (5) in two sides.

The cables such as the motor and the like on the pre-molding plate (5) are uniformly placed in a cable drag chain (8), the cable drag chain (8) is reversely laid in a drag chain sinking groove of a bottom plate (9), and the front end of the bottom of the device penetrates through the bottom plate (9) to be connected with an electric control cabinet at the lower part of an injection molding machine.

The rack (4) meshed with the driving gear (6) is fixed on the bottom plate (9) in a semi-sinking groove mounting mode, a sliding rail is arranged below the whole injection seat, and the whole injection device can integrally move back and forth by the rack.

Finally, it should be noted that the above-mentioned embodiment is only a preferred embodiment of the patent, and is not intended to limit the patent in any way, and that other variants and modifications are possible without departing from the scope of the invention as set forth in the claims.

Claims

1. An engagement-driven all-electric injection device characterized by: the injection molding machine comprises an injection front plate, a pre-molding plate, an injection rear plate, a pull rod assembly and a gear driving assembly, wherein the pre-molding plate penetrates through four pull rods and slides on the pull rods; two driving motors are arranged below the pre-molding plate and drive the gears to rotate through a gear shaft reduction box; a driving gear in the gear driving component is connected with the pre-molding seat through a bearing seat, and racks which are correspondingly meshed are arranged on the bottom plate.

2. An engagement driven all-electric injection device according to claim 1, wherein: the driving gear is installed in a semi-exposed support mode, and a supporting foot type bearing seat is adopted for installing the gear on the pre-molded plate.

3. An engagement driven all-electric injection device according to claim 1, wherein: the gear driving motor is arranged on the pre-molding plate and is connected with the gear through the reduction gearbox assembly by adopting a coupling.

4. An engagement driven all-electric injection device according to claim 1, wherein: the rack is arranged on the bottom plate and is arranged by adopting a semi-embedded sinking groove.

5. An engagement driven all-electric injection device according to claim 1, wherein: the four pull rod assemblies are symmetrically distributed at four points, so that the pre-molded plate slides upwards to bear the gravity of the pre-molded plate.

6. An engagement driven all-electric injection device according to claim 1, wherein: the motor flat cables on the pre-molding plate are uniformly placed in a cable drag chain, the cable drag chain is reversely laid in a drag chain sinking groove of the bottom plate, and the front end of the bottom of the device penetrates through the bottom plate to be connected with an electrical control cabinet at the lower part of the injection molding machine.