Airbag type constant pressure tension table and use method thereof

Abstract

The present invention discloses an airbag type constant pressure tension table, including a frame, a pressure plate assembly and an airbag constant pressure mechanism, characterized in that: the frame is provided with a base and a mounting frame arranged above the base, the top of the base forms a seat, the seat is provided with the pressure plate assembly, the pressure plate assembly includes two pressure plates arranged opposite to each other, each pressure plate is provided with a felt layer for the strip to pass through between the two pressure plates, the felt layers on the two pressure plates relatively contact the two sides of the strip; the airbag constant pressure mechanism is arranged on the mounting frame, and the airbag constant pressure mechanism provides a clamping force acting on the pressure plate assembly. The airbag type constant pressure tension table and its use method described in the present invention can effectively and evenly apply a clamping force to the strip through the cooperation between the frame, the pressure plate assembly and the airbag constant pressure mechanism, so that the winding tension is consistent.

Description

Technical Field

[0001] The present invention relates to the technical field of tension devices, and in particular to an airbag type constant pressure tension table and a use method thereof. Background Art

[0002] The tension table is suitable for various metal stripping equipment, leveling and cross-cutting equipment, metal polishing equipment, supporting equipment for plate pickling production lines, supporting unwinding and rewinding machines for cold rolling mills, plate rewinding production lines and other automated metal processing equipment. It has the function of adjusting tension so that the coiling can be neat. Most of the existing tension tables use upper and lower pressure plates to establish tension. The device consists of a fixed lower pressure plate, a movable upper pressure plate and a pressing cylinder. When the metal strip passes between the upper and lower pressure plates, the upper pressure plate presses the metal strip under the action of the pressing cylinder and gives it a set pressure. This pressure will give the metal strip a resistance that deviates from the traction direction during the traction process of the coiler, and this resistance forms the tension during the coiling process.

[0003] However, the tension table is usually driven by a hydraulic cylinder to press down, which can easily cause uneven pressure distribution, resulting in inconsistent pressing forces applied by the upper and lower pressure plates to each section of the strip during the pressing process, resulting in inconsistent winding tension. Summary of the invention

[0004] The object of the present invention is to provide an airbag type constant pressure tension table and a method of using the same, wherein the airbag type constant pressure tension table can uniformly apply a pressing force to a strip material so that the winding tension is uniform.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An airbag type constant pressure tension table, comprising a frame, a pressure plate assembly and an airbag constant pressure mechanism, wherein the frame is provided with a base and a mounting frame arranged above the base, the top of the base forms a seat, the pressure plate assembly is arranged on the seat, the pressure plate assembly comprises two pressure plates arranged opposite to each other, each pressure plate is provided with a felt layer, so that a strip material can pass between the two pressure plates, and the felt layers on the two pressure plates are in relative contact with two sides of the strip material; the airbag constant pressure mechanism is arranged on the mounting frame, and the airbag constant pressure mechanism provides a pressing force to act on the pressure plate assembly;

[0007] The airbag constant pressure mechanism includes a shell, an air pump, an airbag and a number of constant pressure components. The shell is fixed on a mounting frame. A number of partitions are arranged inside the shell, which sequentially form a first mounting layer, a second mounting layer and a third mounting layer from top to bottom. The air pump is arranged in the first mounting layer, and the airbag is arranged in the second mounting layer. The air outlet of the air pump is connected to the airbag. A number of telescopic sub-airbags are arranged on the airbag, and one end of each telescopic sub-airbag passes through the partition and extends into the third mounting layer. A number of constant pressure components are arranged in the third mounting layer at intervals. The constant pressure component includes a pressing piece and a return spring. The top end of the pressing piece is connected to a telescopic sub-airbag, and the bottom end of the pressing piece passes through the bottom plate of the shell and extends out of the shell. The return spring is sleeved on the top end of the pressing piece.

[0008] As a further technical solution of the present invention: a groove portion is formed at the top end of the pressing member, and is connected to the telescopic sub-airbag through the groove portion.

[0009] As a further technical solution of the present invention: the return spring is sleeved below the groove portion.

[0010] As a further technical solution of the present invention: a lower pressing block is provided at the bottom end of the lower pressing member, and the lower pressing block is screwed to the bottom end of the lower pressing member.

[0011] As a further technical solution of the present invention: the lower pressing block is made of elastic material.

[0012] As a further technical solution of the present invention: the lower pressing plate is in the shape of a strip.

[0013] A method for using an airbag type constant pressure tension table comprises the following steps:

[0014] During the conveying process of the strip, the strip passes between the two pressing plates of the pressing plate assembly, the felt layers on the two pressing plates relatively contact the two sides of the strip, the airbag constant pressure mechanism provides a pressing force to act on the pressing plate assembly, the air pump starts, and the air pump supplies air to the airbag to expand the airbag, and the telescopic sub-airbag swells with the expansion of the airbag, and the telescopic sub-airbag presses against the top of the lower pressing piece in the third installation layer. The pressure applied by the telescopic sub-airbag to the lower pressing piece is greater than the elastic force of the return spring, and the lower pressing piece moves downward, and the bottom end of the lower pressing piece presses against the pressing plate assembly, thereby providing a pressing force to act on the pressing plate assembly;

[0015] After the strip is conveyed, the airbag is exhausted to shrink, and the telescopic sub-airbag shrinks as the airbag shrinks. The elastic force of the return spring is greater than the pressure of the telescopic sub-airbag on the lower pressure piece. The return spring drives the lower pressure piece to return to its position, releasing the pressure on the pressure plate assembly.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention proposes an airbag constant pressure tension table and a method of using the same, which can effectively and evenly apply a clamping force to the strip through the cooperation between the frame, the pressure plate assembly and the airbag constant pressure mechanism, so that the winding tension is consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a picture of the airbag constant pressure tension table in the unused state.

[0018] Figure 2 This is a diagram of the usage status of the airbag constant pressure tension table.

[0019] Figure 3 It is a bottom view of the airbag constant pressure mechanism. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the protection scope of the present invention.

[0021] See also Figure 1 , Figure 2 and Figure 3 , an airbag type constant pressure tension table, comprising a frame 10, a pressure plate assembly 20 and an airbag constant pressure mechanism 30, the frame 10 is provided with a base 11 and a mounting frame 12 arranged above the base 11, the top of the base 11 forms a seat 101, the pressure plate assembly 20 is arranged on the seat 101, the pressure plate assembly 20 comprises two pressure plates 21 arranged opposite to each other, each pressure plate 21 is provided with a felt layer 22, so that the strip material passes between the two pressure plates 21, and the felt layers 22 on the two pressure plates 21 relatively contact the two sides of the strip material; the airbag constant pressure mechanism 30 is arranged on the mounting frame 12, and the airbag constant pressure mechanism 30 provides a pressing force to act on the pressure plate assembly 20;

[0022] The airbag constant pressure mechanism 30 includes a shell 31, an air pump 32, an airbag 33 and a plurality of constant pressure components 34. The shell 31 is fixed on the mounting frame 12. A plurality of partitions 311 are arranged in the shell 31, and a first mounting layer 301, a second mounting layer 302 and a third mounting layer 303 are formed in sequence from top to bottom. The air pump 32 is arranged in the first mounting layer 301, and the airbag 33 is arranged in the second mounting layer 302. The air outlet of the air pump 32 is connected to the airbag 33. The airbag 33 is provided with a plurality of telescopic sub-airbags 331, and one end of each telescopic sub-airbag 331 passes through the partition 311 and extends into Into the third mounting layer 303, a plurality of constant pressure components 34 are spaced apart in the third mounting layer 303, the constant pressure components 34 include a pressing member 341 and a return spring 342, the top end of the pressing member 341 is connected to a telescopic sub-airbag 331, the bottom end of the pressing member 341 passes through the bottom plate of the shell 31 and extends out of the shell 31, the return spring 342 is sleeved on the top end of the pressing member 341, so that the air pump 32 is started and the airbag 33 is expanded, the telescopic sub-airbag 331 swells with the expansion of the airbag 33, and presses the pressing member 341 downward, and the bottom end of the pressing member 341 is pressed against the pressure plate assembly 20.

[0023] Furthermore, a groove portion 41 is formed at the top end of the pressing member 341 , and is connected to the telescopic sub-airbag 331 via the groove portion 41 ; and the return spring 342 is sleeved below the groove portion 41 .

[0024] Furthermore, a lower pressing block 42 is provided at the bottom end of the lower pressing member 341 , and the lower pressing block 42 is screwed to the bottom end of the lower pressing member 341 , so as to facilitate replacement and installation.

[0025] Furthermore, the pressing block 42 is made of elastic material.

[0026] Furthermore, the lower pressing plate 21 is in the shape of a strip, so as to facilitate pressing the pressing plate assembly 20 .

[0027] The method for using the airbag constant pressure tension table comprises the following steps:

[0028] During the conveying process of the strip, the strip passes between the two pressing plates 21 of the pressing plate assembly 20, and the felt layers 22 on the two pressing plates 21 relatively contact the two sides of the strip. The airbag constant pressure mechanism 30 provides a pressing force to act on the pressing plate assembly 20, and the air pump 32 is started, and the air pump 32 supplies air to the airbag 33 to expand the airbag 33. The telescopic sub-airbag 331 swells with the expansion of the airbag 33, and the telescopic sub-airbag 331 presses the top of the pressing member 341 in the third installation layer 303. The pressure applied by the telescopic sub-airbag 331 to the pressing member 341 is greater than the elastic force of the return spring 342, and the pressing member 341 moves downward, and the bottom end of the pressing member 341 presses against the pressing plate assembly 20, thereby providing a pressing force to act on the pressing plate assembly 20;

[0029] After the strip is conveyed, the airbag 33 is vented to shrink the airbag 33, and the telescopic sub-airbag 331 shrinks along with the shrinkage of the airbag 33. The elastic force of the return spring 342 is greater than the pressure of the telescopic sub-airbag 331 on the pressing member 341. The return spring 342 drives the pressing member 341 to return to its original position, releasing the pressure on the pressure plate assembly 20.

[0030] In summary, the airbag constant pressure tension table and its use method of the present invention can effectively and evenly apply a pressing force to the strip through the cooperation between the frame 10, the pressure plate assembly 20 and the airbag constant pressure mechanism 30, so that the winding tension is consistent.

[0031] As long as it does not violate the creative ideas of the present invention, any combination of the various embodiments of the present invention shall be regarded as the contents disclosed by the present invention; within the technical concept of the present invention, any combination of various simple modifications of the technical scheme and different embodiments that does not violate the creative ideas of the present invention shall be within the protection scope of the present invention.

Claims

1. An airbag type constant pressure tension table, comprising a frame (10), a pressure plate assembly (20) and an airbag constant pressure mechanism (30), characterized in that: The frame (10) is provided with a base (11) and a mounting frame (12) arranged above the base (11); the top of the base (11) forms a seat (101); the platen assembly (20) is arranged on the seat (101); the platen assembly (20) comprises two plates (21) arranged opposite to each other; each platen (21) is provided with a felt layer (22) so that the strip can pass between the two plates (21); the felt layers (22) on the two plates (21) are in contact with two sides of the strip; the airbag constant pressure mechanism (30) is arranged on the mounting frame (12); the airbag constant pressure mechanism (30) provides a pressing force to act on the platen assembly (20); The airbag constant pressure mechanism (30) comprises a shell (31), an air pump (32), an airbag (33) and a plurality of constant pressure components (34); the shell (31) is fixed on a mounting frame (12); a plurality of partitions (311) are arranged in the shell (31) to form a first mounting layer (301), a second mounting layer (302) and a third mounting layer (303) in sequence from top to bottom; the air pump (32) is arranged in the first mounting layer (301); the airbag (33) is arranged in the second mounting layer (302); an air outlet of the air pump (32) is connected to the airbag (33); and the airbag (33) A plurality of telescopic sub-airbags (331) are arranged on the upper portion, one end of each telescopic sub-airbag (331) passes through the partition plate (311) and extends into the third installation layer (303), a plurality of constant pressure components (34) are arranged in the third installation layer (303) at intervals, the constant pressure components (34) comprising a pressing member (341) and a return spring (342), the top end of the pressing member (341) is connected to a corresponding telescopic sub-airbag (331), the bottom end of the pressing member (341) passes through the bottom plate of the shell (31) and extends out of the shell (31), and the return spring (342) is sleeved on the top end of the pressing member (341); A groove portion (41) is formed at the top end of the pressing member (341), and is connected to the telescopic sub-airbag (331) via the groove portion (41); The return spring (342) is sleeved below the groove portion (41); The lower pressing plate (21) is in the shape of a strip plate.

2. The airbag type constant pressure tension table according to claim 1, characterized in that: A lower pressing block (42) is provided at the bottom end of the lower pressing piece (341), and the lower pressing block (42) is screw-connected to the bottom end of the lower pressing piece (341).

3. The airbag type constant pressure tension table according to claim 2, characterized in that: The lower pressing block (42) is made of elastic material.

4. A method for using the airbag constant pressure tension table according to any one of claims 1 to 3, comprising the following steps: During the conveying process of the strip, the strip passes between the two pressing plates (21) of the pressing plate assembly (20), the felt layers (22) on the two pressing plates (21) relatively contact the two sides of the strip, the airbag constant pressure mechanism (30) provides a pressing force to act on the pressing plate assembly (20), the air pump (32) is started, the air pump (32) supplies air to the airbag (33), so that the airbag (33) expands, the telescopic sub-airbag (331) swells as the airbag (33) expands, the telescopic sub-airbag (331) presses against the top of the pressing member (341) in the third installation layer (303), the pressure applied by the telescopic sub-airbag (331) to the pressing member (341) is greater than the elastic force of the return spring (342), the pressing member (341) moves downward, and the bottom end of the pressing member (341) presses against the pressing plate assembly (20), thereby providing a pressing force to act on the pressing plate assembly (20); After the strip is conveyed, the airbag (33) is exhausted to shrink the airbag (33). The telescopic sub-airbag (331) shrinks along with the shrinkage of the airbag (33). The elastic force of the return spring (342) is greater than the pressure of the telescopic sub-airbag (331) on the pressing member (341). The return spring (342) drives the pressing member (341) to return to its original position, thereby releasing the pressure on the pressing plate assembly (20).

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