CN211199495U - Lifting device for controlling opening and closing of hot drafting box - Google Patents
Lifting device for controlling opening and closing of hot drafting box Download PDFInfo
- Publication number
- CN211199495U CN211199495U CN201920173578.5U CN201920173578U CN211199495U CN 211199495 U CN211199495 U CN 211199495U CN 201920173578 U CN201920173578 U CN 201920173578U CN 211199495 U CN211199495 U CN 211199495U
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- hot box
- lifting device
- hot
- closing
- screw rod
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Abstract
The utility model discloses a lifting device for controlling the opening and closing of a drafting hot box, which comprises a hot box body, a hot box cover, a lead screw, a turbine reducer and a motor; the hot box cover is connected with the hot box body through a hinge; the side surface of the heat box cover is connected with the top end of the screw rod through a hinge.
Description
Technical Field
The utility model provides a elevating gear for be used for controlling hot case of draft to open and close, in particular, a lead screw elevating gear for accurate control hot case of draft is opened and close is provided.
Background
The drafting hot box is heating equipment specially used for stretching fibers in the spinning production process, and is important equipment for the hot stretching process of the ultra-high molecular weight polyethylene. The hot box is provided with two sets of air duct circulating systems, and adopts a structure of a double-layer air penetrating system, namely, an upper air duct and a lower air duct which are parallel to each other are respectively arranged. The upper and lower layer box bodies where the two air channels are located are connected by hinges, and after the box bodies are closed, a hot air circulation channel is formed between the upper and lower layers. The temperature field distribution of the shaft has an important influence on the processing of the fibers. Because the temperature difference exists between the upper air duct and the lower air duct and the duct, the distribution of the temperature field in the duct depends on the distance between the upper air duct and the lower air duct to a great extent. The opening and closing of the upper and lower box bodies are completed by a lifting device.
At present, the main driving mode of a lifting device of a drafting hot box is compressed air driving. Because the pneumatic pressure cylinder is directly controlled by compressed air, the compressed air cylinder is opened, namely, the compressed air cylinder is straightened to the maximum, and the compressed air cylinder is closed to return to the minimum state, so that the compressed air drive cannot realize the accurate adjustment of the intermediate position. Meanwhile, the compressed air pipeline has short service life and is easy to have abnormal conditions such as runaway and the like in a high-temperature environment. Therefore, the inconvenience in production caused by the pneumatic lifting device needs to be solved urgently.
In the aspect of operation of the drafting hot box, the hot box cover and the hot box base are not completely sealed, an operation window needs to be reserved between the hot box cover and the hot box base, and the repeatability of the position of the reset of the hot box cover is required to be higher, so that the uniformity of a channel temperature field is ensured. Before the invention, the lifting of the hot box cover is controlled by using a cylinder transmission mode. The method has the defects of inaccurate control on the stroke of the cylinder and poor repeatability, and causes the temperature field of the shaft to have deviation.
SUMMERY OF THE UTILITY MODEL
In order to accurately control the rising and falling of the hot box cover and adapt to the high-temperature working environment thereof, the utility model provides an electric screw rod controlled hot box cover lifting device.
A lifting device for controlling the opening and closing of a drafting hot box comprises a hot box body, a hot box cover, a screw rod, a turbine speed reducer and a motor; the hot box cover is connected with the hot box body through a hinge; the side surface of the heat box cover is connected with the top end of the screw rod through a hinge.
In a preferred embodiment, the turbo reducer and the motor are fixed to a side surface of the heat box.
A motor is adopted to drive a screw rod through a turbine speed reducer, and the distance between the side surface of the hot box cover and a hinge at the top end of the screw rod and the distance between the hot box and the hinge of the turbine speed reducer are changed. The mechanical principle of the screw rod lifting device is a crank sliding block mechanism, and a driving part of the mechanism is a screw rod motor serving as a moving sliding block. And because the moving amplitude of the screw rod design is small, the dead point of the mechanism is avoided.
After the screw rod lifting device is adopted, the driving is not influenced by unstable air pressure and high temperature damage of compressed air any more, the opening and closing of the hot drafting box are more sensitive, and the operation efficiency is greatly improved. The lifting height of the screw rod can be controlled by the rotating angle of the screw rod, so that the accurate control of the opening and closing of the drafting hot box is realized, and the problem of unstable channel distance is successfully solved. In addition, the fluctuation of the channel distance is reduced, so that the uniformity of the channel temperature field is ensured, and the process requirements in spinning production are met.
Drawings
FIG. 1 is a schematic view of a lifting device for controlling the opening and closing of a hot box according to an embodiment of the present application, and FIG. 1 shows
1. Hinge assembly
2. Screw mandrel
3. Electric machine
4. Turbine speed reducer
5. Hot box cover
6. Hinge assembly
7. Box body
Detailed Description
The improved oven lifting device is controlled by a screw rod. The rotating speed and time of the motor 3 are set, and the ascending and descending distances of the screw rod 2 are controlled. When the power supply is switched on, the motor 3 is started to drive the turbine speed reducer 4 to rotate, the turbine speed reducer 4 drives the screw rod 2 to move up and down, and the hot box cover 5 is lifted up or pressed down through the hinge 1.
Claims (1)
1. A lifting device for controlling the opening and closing of a drafting hot box is characterized by comprising a hot box body, a hot box cover, a screw rod, a turbine reducer and a motor; the hot box cover is connected with the hot box body through a hinge; the side surface of the hot box cover is connected with the top end of the screw rod by a hinge; the turbine reducer and the motor are fixed on one side surface of the hot box.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018222677747 | 2018-12-29 | ||
| CN201822267774 | 2018-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211199495U true CN211199495U (en) | 2020-08-07 |
Family
ID=71885092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920173578.5U Active CN211199495U (en) | 2018-12-29 | 2019-01-31 | Lifting device for controlling opening and closing of hot drafting box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211199495U (en) |
-
2019
- 2019-01-31 CN CN201920173578.5U patent/CN211199495U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |