Electric pre-speed gearbox structure of injection molding machine

Abstract

The utility model provides an electric pre-speed gearbox structure of an injection molding machine, which comprises a motor and a gearbox which are connected with each other, and the motor is arranged at a position staggered with a protective cover; the gear box is a planetary gear box. The motor and the gear box are staggered, so that the size, the weight, the cost and the noise of the gear box can be reduced, the strength of each stage of gear of the gear box is increased, enough mounting space is provided for the protective cover, and no obstruction is caused; and moreover, when the parallel shaft gear box runs, lubricating oil is easy to leak from the ventilation cap, so that the gear box is arranged into the planetary gear box, the technical problem can be solved, and compared with the parallel shaft gear box, the planetary gear box is smaller in noise and lighter in weight, and a cooling system is omitted.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to an electric pre-speed gear box structure for an injection molding machine. Background Art

[0002] The screw in the injection molding machine is connected to the parallel shaft reducer through a coupling, and the power input end of the reducer is connected to the motor. In order to make the connection between the screw and the reducer waterproof and dustproof, a protective cover needs to be installed at the connection.

[0003] To save space, Figure 4 As shown in the figure, the motor is usually installed directly above the protective cover, which will cause interference between the installation positions of the motor and the protective cover. The conventional solution is to enlarge the gears in the gearbox, thereby increasing the gear center distance and the distance between the motor and the protective cover. Although this can solve the interference problem, it will hinder the installation of the protective cover, increase noise, make the gearbox too heavy, increase energy consumption, and require an additional cooling system.

[0004] Since this motor generally uses a model with a speed of 2000r / min, the speed ratio of the reduction box only needs to be 8.8. Increasing the gear setting will make the gearbox more bulky, making it more difficult to carry and disassemble, and will also increase costs. Utility Model Content

[0005] In order to solve the technical problems in the background technology, the utility model discloses an electric pre-speed gear box structure for an injection molding machine.

[0006] The utility model provides an electric pre-speed gearbox structure for an injection molding machine, comprising a motor and a gearbox connected to each other, wherein the motor is installed at a position staggered from a protective cover;

[0007] The gearbox is a planetary gearbox.

[0008] Staggering the motor and the gearbox can not only reduce the size of the gearbox, reduce the weight of the gearbox, reduce costs, reduce noise, and increase the strength of each gear of the gearbox, but also provide sufficient installation space for the protective cover without causing obstruction; furthermore, since the lubricating oil is easy to leak out from the breathable cap when the parallel axis gearbox is running, setting the gearbox to a planetary gearbox can solve this technical problem, and compared with the parallel axis gearbox, the planetary gearbox has lower noise, lighter weight, and eliminates the cooling system.

[0009] There are several ways to install the motor. The first is that the motor and the protective cover are located on opposite sides of the gearbox. The second is that the motor is arranged horizontally and perpendicular to the screw. Although these two methods can solve the problem of interference between the motor and the protective cover, the motor exceeds the base and takes up more space. Therefore, a third installation method is designed: the motor is arranged vertically and perpendicular to the screw.

[0010] The first-stage planetary gearbox can reach a speed ratio of 8.8, which meets the use requirements, but this will cause the sun gear to be too small and insufficient in strength. Based on this, further improvements are made: the speed ratio of the gearbox is 4-5; the motor is connected to the gearbox through a gear set; the speed ratio of the gear set is 1.8-2.2, so that the total speed ratio of the gearbox and the gear set reaches 8.8.

[0011] The gear set specifically comprises a first bevel gear and a second bevel gear meshing with each other; the first bevel gear is connected to the motor; and the power input end of the gear box is connected to the second bevel gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 This is a front view of the third embodiment of the utility model;

[0014] Figure 2 This is a front view of the first embodiment of the utility model;

[0015] Figure 3 It is a top view of the second embodiment of the utility model;

[0016] Figure 4 This is the front view of the traditional gearbox structure;

[0017] In the figure: 1. motor; 2. gear box; 3. protective cover; 4. first bevel gear; 5. second bevel gear; 6. base. DETAILED DESCRIPTION

[0018] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0019] Embodiment 1:

[0020] like Figure 2 As shown, the utility model discloses an electric pre-speed gearbox structure for an injection molding machine, comprising a motor 1 and a gearbox 2 which are mounted on a base 6 and connected to each other, wherein the gearbox 2 is a first-stage planetary gearbox.

[0021] The motor 1 and the protective cover 3 are respectively located on two opposite sides of the gear box 2 .

[0022] The motor 1 and the gear box 2 are staggered, which not only reduces the volume of the gear box 2, reduces the weight of the gear box 2, reduces the cost, reduces the noise, and increases the strength of the gears of each level of the gear box, but also provides sufficient installation space for the protective cover 3 without causing obstruction; furthermore, since the lubricating oil is easy to leak from the breathable cap when the parallel axis gear box is running, the gear box 2 is set as a planetary gear box to solve this technical problem, and compared with the parallel axis gear box, the planetary gear box has lower noise, lighter weight, and eliminates the cooling system.

[0023] Embodiment 2:

[0024] Compared with the first embodiment, the difference is: Figure 3 As shown, the motor 1 is arranged horizontally and perpendicular to the screw.

[0025] Embodiment three:

[0026] Compared with the first embodiment, the difference is: Figure 1 As shown, the motor 1 is arranged vertically and perpendicular to the screw.

[0027] The speed ratio of the gearbox 2 is 4-5; the motor 1 is connected to the gearbox 2 through a gear set; the speed ratio of the gear set is 1.8-2.2, so that the total speed ratio of the gearbox 2 and the gear set reaches 8.8.

[0028] The gear set includes a first bevel gear 4 and a second bevel gear 5 meshing with each other; the first bevel gear 4 is connected to the motor 1 ; and the power input end of the gear box 2 is connected to the second bevel gear 5 .

[0029] The above arrangement reduces the speed ratio of the gearbox 2, thereby increasing the diameter of the sun gear, improving the strength of the sun gear, and extending its service life, so that the gearbox 2 can operate stably.

[0030] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electric pre-speed gearbox structure for an injection molding machine, comprising a motor (1) and a gearbox (2) connected to each other, characterized in that: The motor (1) is installed at a position offset from the protective cover (3); The gear box (2) is a planetary gear box.

2. The electric pre-speed gearbox structure for an injection molding machine according to claim 1, characterized in that: The motor (1) and the protective cover (3) are respectively located on two opposite sides of the gear box (2).

3. The electric pre-speed gearbox structure for an injection molding machine according to claim 2, characterized in that: The motor (1) is arranged horizontally and perpendicular to the screw.

4. The electric pre-speed gearbox structure for an injection molding machine according to claim 3, characterized in that: The motor (1) is arranged vertically and perpendicular to the screw.

5. The electric pre-speed gearbox structure for an injection molding machine according to claim 4, characterized in that: The speed ratio of the gearbox (2) is 4-5; The motor (1) is connected to the gear box (2) via a gear set; The speed ratio of the gear set is 1.8-2.2, so that the total speed ratio of the gear box (2) and the gear set reaches 8.

8.

6. The electric pre-speed gearbox structure for an injection molding machine according to claim 5, characterized in that: The gear set comprises a first bevel gear (4) and a second bevel gear (5) meshing with each other; The first bevel gear (4) is connected to the motor (1); The power input end of the gear box (2) is connected to a second bevel gear (5).

Images