Built-in cooling structure of high-torque speed reducer of injection molding machine
By incorporating a cooling structure into the injection molding machine reducer, the flow of coolant carries away heat and increases the heat exchange area, solving the problem of insufficient thermal power in planetary reducers and achieving a more efficient cooling effect and extended equipment life.
Patent Information
- Application Number
- CN202520013631.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2035-01-03
AI Technical Summary
In traditional injection molding machines, planetary gearboxes suffer from insufficient thermal power, leading to temperature increases, increased failure rates, and reduced service life.
The reducer has a built-in cooling structure, which forms a cooling chamber through a sealing cover and an internal gear ring. Coolant flows in the cooling chamber to remove heat, and annular heat dissipation fins are set at the bottom of the chamber to increase the heat exchange area and improve the cooling effect.
It effectively reduces the internal temperature of the reducer, decreases the failure rate, extends the service life, and improves transmission efficiency and power transmission capacity.
Smart Images
Figure CN223536908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of speed reducers, and in particular to a built-in cooling structure for a high-torque speed reducer for injection molding machines. Background Technology
[0002] Traditional injection molding machine screws generally use hydraulic motors as their power source. However, hydraulic motors have drawbacks such as low transmission efficiency, severe noise pollution, high environmental pollution risk, and large space occupation. To overcome these shortcomings, improve equipment performance, and reduce energy consumption and costs, a power system combining a planetary reducer and a servo motor is adopted. This not only significantly improves transmission efficiency and achieves the goal of energy conservation and emission reduction, but also greatly reduces the size of the equipment and improves power transmission capacity.
[0003] However, the use of planetary gearboxes may result in insufficient thermal power, causing the internal temperature of the gearbox to rise, thereby increasing the failure rate of the equipment and reducing its service life. Utility Model Content
[0004] In view of the above-mentioned problems of existing planetary gear reducers, the aim is to provide a built-in cooling structure for high torque gear reducers of injection molding machines with good cooling effect and reduced failures.
[0005] The specific technical solution is as follows:
[0006] A built-in cooling structure for a high-torque reducer of an injection molding machine is disclosed. The reducer includes an end cover and an internal gear ring coaxially mounted on the end cover. The cooling structure includes a sealing cover, which is an annular structure and coaxially sleeved on the outside of the internal gear ring. A cooling cavity is formed between the sealing cover and the internal gear ring, and the cooling cavity surrounds the outside of the internal gear ring. The sealing cover has a cooling medium inlet and a cooling medium outlet communicating with the cooling cavity.
[0007] Furthermore, as a preferred embodiment, the inner wall of the sealing cover is provided with a first cooling groove on a coaxial ring, and the outer wall of the inner gear ring is provided with a second cooling groove that communicates with the first cooling groove, and the cooling cavity is formed between the second cooling groove and the first cooling groove.
[0008] Furthermore, in a preferred embodiment, both the bottom of the first cooling tank and the bottom of the second cooling tank are coaxially provided with a plurality of annular heat dissipation fins.
[0009] Furthermore, as a preferred embodiment, two sealing rings are provided between the sealing cover and the inner toothed ring, with the two sealing rings located on both sides of the cooling cavity.
[0010] Furthermore, as a preferred embodiment, the outer surface of the internal gear ring is provided with two sealing grooves coaxially, and the two sealing rings are respectively disposed in the two sealing grooves.
[0011] Furthermore, in a preferred embodiment, the sealing cap is connected to the end cap.
[0012] Furthermore, as a preferred embodiment, the sealing cap and the end cap are connected by a number of bolts.
[0013] Furthermore, as a preferred embodiment, the bolts are distributed at equal intervals along the circumference of the end cap.
[0014] Furthermore, as a preferred embodiment, the internal gear ring and the end cap are connected by a number of bolts.
[0015] Furthermore, in a preferred embodiment, the cooling medium inlet and the cooling medium outlet are located on opposite sides of the sealing cover.
[0016] The positive effects of the above technical solution compared with the existing technology are:
[0017] (1) When the reducer is working, the coolant (such as water) can be pumped into the cooling chamber through the cooling medium inlet and discharged through the cooling medium outlet. When the coolant flows in the cooling chamber, it will quickly carry away the heat generated inside the reducer, thereby reducing the failure rate of the reducer caused by high temperature and improving the service life of the reducer.
[0018] (2) The bottom of the first cooling tank and the bottom of the second cooling tank of this utility model are both coaxially provided with several annular heat dissipation fins, which increases the heat exchange area with the coolant and improves the cooling effect. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the built-in cooling structure of a high-torque reducer for an injection molding machine according to the present invention.
[0020] In the attached diagram: 1. End cap; 2. Internal gear ring; 3. Sealing cap; 4. Sealing ring; 5. Annular heat dissipation fins; 6. Bolt; 21. Cooling chamber; 31. Cooling medium inlet; 32. Cooling medium outlet. Detailed Implementation
[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Figure 1 This is a schematic diagram of the built-in cooling structure of a high-torque reducer for an injection molding machine according to the present invention. Figure 1 As shown, a preferred embodiment of a high-torque reducer for an injection molding machine with a built-in cooling structure is provided at the high-speed end of the reducer. The reducer includes an end cover 1 and an internal gear ring 2 coaxially mounted on the end cover 1. The cooling structure includes a sealing cover 3, which is an annular structure and coaxially sleeved on the outside of the internal gear ring 2. A cooling cavity 21 is formed between the sealing cover 3 and the internal gear ring 2. The cooling cavity 21 surrounds the outside of the internal gear ring 2. The sealing cover 3 has a cooling medium inlet 31 and a cooling medium outlet 32 communicating with the cooling cavity 21.
[0025] In this embodiment, when the reducer is working, coolant (such as water) can be pumped into the cooling chamber 21 through the cooling medium inlet 31 and discharged through the cooling medium outlet 32. When the coolant flows in the cooling chamber 21, it will quickly carry away the heat generated inside the reducer, thereby reducing the failure rate of the reducer caused by high temperature and improving the service life of the reducer.
[0026] Furthermore, as a preferred embodiment, the inner wall of the sealing cover 3 is provided with a first cooling groove on a coaxial ring, and the outer wall of the inner gear ring 2 is provided with a second cooling groove that communicates with the first cooling groove on a coaxial ring, and a cooling cavity 21 is formed between the second cooling groove and the first cooling groove.
[0027] Furthermore, as a preferred embodiment, the bottom of both the first cooling tank and the bottom of the second cooling tank are coaxially provided with a plurality of annular heat dissipation fins 5 to increase the heat exchange area with the coolant and improve the cooling effect.
[0028] Furthermore, as a preferred embodiment, in order to improve the sealing performance of the cooling chamber 21 and prevent coolant leakage from contaminating the reducer, two sealing rings 4 are provided between the sealing cover 3 and the internal gear ring 2, with the two sealing rings 4 located on both sides of the cooling chamber 21 respectively.
[0029] Furthermore, as a preferred embodiment, the outer surface of the internal gear ring 2 is provided with two sealing grooves coaxially, and the two sealing rings 4 are respectively disposed in the two sealing grooves.
[0030] Furthermore, as a preferred embodiment, the sealing cap 3 is connected to the end cap 1 to prevent the sealing cap 3 from moving axially.
[0031] Furthermore, as a preferred embodiment, the sealing cap 3 and the end cap 1 are connected by a number of bolts 6.
[0032] Furthermore, as a preferred embodiment, several bolts 6 are evenly distributed along the circumference of the end cap 1.
[0033] Furthermore, as a preferred embodiment, the internal gear ring 2 and the end cap 1 are connected by a number of bolts 6.
[0034] Furthermore, in a preferred embodiment, the cooling medium inlet 31 and the cooling medium outlet 32 are located on both sides of the sealing cover 3, respectively.
[0035] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A built-in cooling structure for a high-torque reducer in an injection molding machine, the reducer comprising an end cover and an internal gear ring coaxially mounted on the end cover, characterized in that, The cooling structure includes: a sealing cover, which is an annular structure and is coaxially sleeved on the outside of the inner gear ring, and a cooling cavity is formed between the sealing cover and the inner gear ring, the cooling cavity surrounding the outside of the inner gear ring, and the sealing cover has a cooling medium inlet and a cooling medium outlet communicating with the cooling cavity.
2. The built-in cooling structure for the high-torque reducer of the injection molding machine according to claim 1, characterized in that, The inner wall of the sealing cover is provided with a first cooling groove on a coaxial ring, and the outer wall of the internal gear ring is provided with a second cooling groove that communicates with the first cooling groove, and the cooling cavity is formed between the second cooling groove and the first cooling groove.
3. The built-in cooling structure for the high-torque reducer of the injection molding machine according to claim 2, characterized in that, Both the bottom of the first cooling tank and the bottom of the second cooling tank are coaxially provided with several annular heat dissipation fins.
4. The built-in cooling structure for the high-torque reducer of the injection molding machine according to claim 1, characterized in that, Two sealing rings are provided between the sealing cover and the inner toothed ring, and the two sealing rings are respectively located on both sides of the cooling cavity.
5. The built-in cooling structure for the high-torque reducer of the injection molding machine according to claim 4, characterized in that, The external surface of the internal gear ring is provided with two sealing grooves coaxially, and the two sealing rings are respectively disposed in the two sealing grooves.
6. The built-in cooling structure for the high-torque reducer of the injection molding machine according to claim 1, characterized in that, The sealing cap is connected to the end cap.
7. The built-in cooling structure for the high-torque reducer of the injection molding machine according to claim 6, characterized in that, The sealing cap and the end cap are connected by several bolts.
8. The built-in cooling structure for the high-torque reducer of the injection molding machine according to claim 7, characterized in that, Several of the bolts are distributed at equal intervals along the circumference of the end cap.
9. The built-in cooling structure for the high-torque reducer of the injection molding machine according to claim 1, characterized in that, The internal gear ring and the end cap are connected by several bolts.
10. The built-in cooling structure for the high-torque reducer of the injection molding machine according to claim 1, characterized in that, The cooling medium inlet and the cooling medium outlet are located on opposite sides of the sealing cover.