Pneumatic sizing device for steel belt

Abstract

The pneumatic sizing device comprises a steel belt coil, an annular supporting face is arranged on the steel belt coil, a first inner diameter is formed on the annular supporting face, an air cavity and an air nozzle are formed in the steel belt coil, and the air nozzle communicates with the air cavity; a movable groove is formed in the annular supporting surface, the movable groove communicates with the air cavity, a movable block is arranged in the movable groove, the movable block is movably installed in the movable groove, and the movable block is limited in the movable groove through a limiting device; when the air cavity contains positive pressure air, the positive pressure air pushes the movable block to move in the movable groove in the direction away from the annular supporting face, and a second inner diameter is formed at the end, away from the annular supporting face, of the movable block. When the air cavity contains negative pressure air, the limiting device pushes the movable block to move in the direction of the air cavity, so that the movable block is completely located in the movable groove, the inner diameter of the steel strip coil can be adjusted through mutual cooperation of the air cavity and the movable block, and the tension of a steel strip can be conveniently and accurately adjusted.

Description

Technical Field

[0001] This application relates to the field of steel strip manufacturing structures, and particularly to a pneumatic sizing device for steel strips. Background Art

[0002] In modern industrial production, steel strips, as an important raw material, are widely used in many fields such as printing, steel rolling, wire drawing machines, and precision winding machines. Tension control during the steel strip winding process is one of the key factors to ensure product quality and production efficiency. With the continuous progress of technology, the steel strip winding tension adjustment technology has also undergone significant development and improvement.

[0003] Traditional tension adjustment technologies mainly rely on mechanical devices and manual operations, and have many limitations. For example, mechanical devices are prone to wear and accuracy degradation after long-term operation, resulting in unstable tension control; while manual operations rely on the experience and skills of operators and it is difficult to achieve precise tension control. In addition, traditional tension adjustment technologies are also easily affected by external environmental interferences. Changes in factors such as temperature and humidity will affect the stability of tension. Utility Model Content

[0004] To solve the problems existing in the prior art, the present utility model provides a pneumatic sizing device for steel strips. Through the mutual cooperation of the air cavity and the movable block, the inner diameter size of the steel strip coil can be adjusted, which is convenient for precisely adjusting the tension of the steel strip.

[0005] The technical solutions adopted by the present utility model to solve the above technical problems are as follows:

[0006] This application provides a pneumatic sizing device for steel strips, including:

[0007] A steel strip coil, on which an annular support surface is provided. A first inner diameter is formed on the annular support surface. An air cavity is provided on the steel strip coil, and an air nozzle is provided on the steel strip coil. The air nozzle communicates with the air cavity;

[0008] An activity groove is provided on the annular support surface. The activity groove communicates with the air cavity. A movable block is provided in the activity groove. The movable block is movably installed in the activity groove, and the movable block is limited in the activity groove by a limiting device;

[0009] Wherein, when the air cavity contains positive pressure gas, the positive pressure gas pushes the movable block to move in the activity groove in a direction away from the annular support surface, so that a second inner diameter is formed at one end of the movable block away from the annular support surface;

[0010] When the air cavity contains negative pressure gas, the limiting device pushes the movable block to move in the direction towards the air cavity, so that the movable block is completely located in the activity groove.

[0011] Optionally, in some embodiments of the present application, the limiting device includes a limiting block located on the movable block;

[0012] A limiting groove is formed at a position on the steel strip coil corresponding to the limiting block, and the limiting block is located in the limiting groove;

[0013] A limiting spring is further arranged in the limiting groove, one end of the limiting spring abuts against the limiting groove, and the other end of the limiting spring abuts against the limiting block.

[0014] Optionally, in some embodiments of the present application, the limiting spring is located on a side of the limiting block away from the air cavity.

[0015] Optionally, in some embodiments of the present application, the size and shape of the movable block are equal to the size and shape of the movable groove.

[0016] Optionally, in some embodiments of the present application, an inner cylinder and an outer cylinder are further arranged on the steel strip coil, the annular supporting surface is formed on the outer cylinder, and an air cavity is formed between the outer cylinder and the inner cylinder;

[0017] When the air in the air cavity is negative pressure gas, a pressing area is formed at one end of the movable block facing the inner cylinder, and the pressing area communicates with the areas at both ends of the movable block, so that the pressing area and the areas at both ends form an air cavity.

[0018] Optionally, in some embodiments of the present application, a plurality of movable grooves are provided, and the plurality of movable grooves are annularly arranged and uniformly arranged on the annular supporting surface;

[0019] The plurality of movable grooves all communicate with one air cavity.

[0020] Compared with the prior art, the beneficial effects in the present utility model are as follows:

[0021] In this embodiment, through the mutual cooperation of the air cavity and the movable block, when adjusting the inner diameter of the steel strip coil, high-pressure gas is pumped into the air cavity through the air nozzle, and a second inner diameter can be formed on the steel strip coil through 12 annularly arranged movable blocks, which is convenient for adjusting the steel strip, thereby adjusting the tension of the overall steel strip. At the same time, the size of the second inner diameter can also be adjusted through the setting of high-pressure gas, so as to accurately adjust the tension of the steel strip. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the overall structure of the pneumatic sizing device for steel strips provided by the embodiment of the present application Figure 1 ;

[0024] Figure 2 Schematic diagram of the overall structure of the pneumatic sizing device for steel strips provided by the embodiment of the present application Figure 2 ;

[0025] Figure 3 Schematic diagram of the overall sectional structure of the pneumatic sizing device for steel strips provided by the embodiment of the present application;

[0026] Figure 4 For Figure 3 The enlarged structure diagram at position A in

[0027] Explanation of reference numerals:

[0028] 100, steel strip coil; 110, inner cylinder; 120, outer cylinder; 121, annular support surface; 1211, movable groove; 130, air cavity; 131, extrusion area; 140, air nozzle; 150, limit groove; 200, movable block; 210, limit block; 300, limiting device; 310, limiting spring. Specific embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application. It can be understood that the accompanying drawings are only for reference and illustration, and are not used to limit the present application. The connection relationships shown in the drawings are only for clear description and do not limit the connection methods.

[0030] Specifically, as Figure 1 shown, the embodiment of the present application provides a pneumatic sizing device for steel strips. In this device, the radius of the steel strip coil 100 can be adjusted pneumatically, which is convenient to adjust the tension of the steel strip according to the inner diameter of the steel strip.

[0031] To achieve the above process, the following structure is used for operation in the present application, specifically:

[0032] As Figure 3-4 shown in the figure, the steel strip coil 100 mainly consists of an inner cylinder 110 and an outer cylinder 120. The inner cylinder 110 is arranged inside the outer cylinder 120, and a compartment is formed between the inner cylinder 110 and the outer cylinder 120. This compartment is an air cavity 130. An annular support surface 121 is formed on one side of the outer cylinder 120 away from the inner cylinder 110. This annular support surface 121 is used to wind the steel strip for storing the steel strip, and a first inner diameter is formed on this annular support surface 121.

[0033] Among them, an air nozzle 140 is also provided on the steel strip coil 100. The air nozzle 140 communicates with the air cavity 130. High-pressure gas can be pumped into the air cavity 130 through the air nozzle 140. Among them, pumping high-pressure gas is mainly to adjust the inner diameter size on the steel strip coil 100.

[0034] Specifically:

[0035] A plurality of movable grooves 1211 are annularly formed on the annular support surface 121. In the embodiment of the present application, 12 movable grooves 1211 are provided. The 12 movable grooves 1211 are evenly formed on the annular support surface 121, and the 12 movable grooves 1211 are all communicated with the air cavity 130. Movable blocks 200 are arranged in the movable grooves 1211. The movable blocks 200 move in the movable grooves 1211. A limiting block 210 is arranged on both sides of the movable block 200. A limiting groove 150 is formed on the steel strip coil 100 at the position corresponding to the limiting block 210. The limiting block 210 is located in the limiting groove 150, and the limiting block 210 moves in the limiting groove 150 to realize the movement of the movable block 200 in the movable groove 1211.

[0036] Among them, the specific moving method is:

[0037] High-pressure gas is pumped into the air cavity 130 through the air nozzle 140 by an air pump, so that a positive pressure state is formed in the air cavity 130. In the positive pressure state, the high-pressure gas will push the movable block 200 to move in the direction away from the air cavity 130, so that a second inner diameter is formed on the plane at one end of the movable block 200 away from the air cavity 130. At this time, the size of the second inner diameter is larger than the size of the first inner diameter. During the winding process of the steel strip, the tension of the steel strip is changed by changing its inner diameter.

[0038] In the above structure, during the pushing process of the positive pressure gas, due to the arrangement of the limiting block 210 and the limiting groove 150, when the limiting block 210 abuts against the limiting groove 150, the limiting groove 150 blocks the limiting block 210 from continuing to move in the direction away from the air cavity 130, so that the second inner diameter on the movable block 200 is the maximum inner diameter.

[0039] Among them, to prevent a large amount of the gas from overflowing from the movable groove 1211, in the embodiment of the present application, the size and shape of the movable block 200 are the same as those of the movable groove 1211, which can prevent a large amount of gas from overflowing while enabling the movable block 200 to move in the movable groove 1211.

[0040] Among them, when the air cavity 130 is filled with negative-pressure gas, the formation of the negative-pressure gas can be obtained by pumping air at the air nozzle 140 through an air pump, so that the pressure in the air cavity 130 decreases. Under the negative-pressure state, on the one hand, the external atmospheric pressure will push the movable block 200 to move in the movable groove 1211 in the direction towards the air cavity 130, so that the movable block 200 is completely located in the movable groove 1211. At this time, the size of the first inner diameter is greater than that of the second inner diameter.

[0041] In the embodiment of the present application, since the movable block 200 moves in the movable groove 1211, there will more or less be a gap between the movable block 200 and the movable groove 1211, and this gap will affect the occurrence of the negative-pressure state. To avoid this situation, a limiting spring 310 is further provided in the limiting groove 150. One end of the limiting spring 310 abuts against the inner wall of the limiting groove 150, and the other end of the limiting spring 310 abuts against the limiting block 210. And in the embodiment of the present application, the limiting spring 310 is specifically located at one end of the limiting block 210 away from the air cavity 130. The limiting spring 310 at this position can push the limiting block 210 to move in the direction towards the air cavity 130, so that the movable block 200 is completely located in the movable groove 1211.

[0042] Among them, the limiting spring 310 is a limiting device 300.

[0043] Among them, in the embodiment of the present application, when the movable block 200 is completely located in the movable groove 1211 and the movable block 200 is squeezed to the limit position by the limiting spring 310, a region needs to be set so that when the air in the air cavity 130 is under positive pressure, the gas in the air cavity 130 can push the movable block 200 through this region.

[0044] Specifically, a squeezing area 131 is formed between the side of the movable block 200 facing the inner cylinder 110 and the inner cylinder 110. The squeezing area 131 changes with the movement of the movable block 200 in the movable groove 1211. Among them, when the air cavity 130 is under negative pressure or the movable block 200 is completely squeezed by the limiting spring 310, the area between the movable block 200 and the inner cylinder 110 is the smallest squeezing area 131. The setting of this smallest area can enable the gas to push the movable block 200 through the squeezing area 131 when the air in the air cavity 130 is under positive pressure.

[0045] Among them, in the embodiment of the present application, the extrusion area 131 communicates with the areas at both ends of the movable block 200, so that the extrusion area 131 and the areas at both ends form an air cavity 130.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A pneumatic sizing device for steel strips, characterized in that, Comprising: A steel strip coil, on which an annular support surface is provided, a first inner diameter is formed on the annular support surface, an air cavity is formed on the steel strip coil, and an air nozzle is provided on the steel strip coil, and the air nozzle communicates with the air cavity; An activity groove is formed on the annular support surface, the activity groove communicates with the air cavity, an activity block is arranged in the activity groove, the activity block is movably installed in the activity groove, and the activity block is limited in the activity groove by a limiting device; Wherein, when the air cavity contains positive pressure gas, the positive pressure gas pushes the activity block to move in a direction away from the annular support surface in the activity groove, so that a second inner diameter is formed at one end of the activity block away from the annular support surface; When the air cavity contains negative pressure gas, the limiting device pushes the activity block to move in the direction of the air cavity, so that the activity block is completely located in the activity groove.

2. The pneumatic sizing device for steel strip according to claim 1, characterized in that The limiting device includes a limiting block, and the limiting block is located on the activity block; A limiting groove is formed on the steel strip coil at a position corresponding to the limiting block, and the limiting block is located in the limiting groove; A limiting spring is further arranged in the limiting groove, one end of the limiting spring abuts against the limiting groove, and the other end of the limiting spring abuts against the limiting block.

3. The pneumatic sizing device for steel strip according to claim 2, wherein The limiting spring is located on a side of the limiting block away from the air cavity.

4. A pneumatic sizing device for steel strips according to claim 1, characterized in that, The size and shape of the activity block are equal to the size and shape of the activity groove.

5. A pneumatic sizing device for steel strips according to claim 1, characterized in that, An inner cylinder and an outer cylinder are further arranged on the steel strip coil, the annular support surface is formed on the outer cylinder, and an air cavity is formed between the outer cylinder and the inner cylinder; When the air in the air cavity is negative pressure gas, a pressing area is formed at one end of the activity block facing the inner cylinder, and the pressing area communicates with the areas at both ends of the activity block, so that the pressing area and the areas at both ends form an air cavity.

6. The pneumatic sizing device for steel strip according to claim 1, wherein, A plurality of the activity grooves are provided, and the plurality of activity grooves are annularly arranged and evenly arranged on the annular support surface; All the plurality of activity grooves commonly communicate with one air cavity.

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