An automatic inflation and deflation air-bag axle system

Abstract

The utility model relates to the field of coiled material processing discloses an automatic inflation and deflation gas expansion axle system, including frame, center total axle, gas expansion axle and pneumatic slip ring, and the frame includes mounting support, the gas expansion axle gas expansion axle has for the air inlet and outlet passage of inflation expansion or deflation retraction, and the inside one end of air inlet and outlet passage communicates with the gas expansion axle inner chamber, and the outside one end of air inlet and outlet passage is provided with the gas pipe, the pneumatic slip ring fixed mounting is in the end of gas expansion axle, and the pneumatic slip ring includes rotary seat and fixed seat, and rotary seat fixed mounting is in the one end of gas expansion axle setting gas pipe, and the center of rotary seat is equipped with the radial extension connector, and the connector is connected with the gas pipe line of gas expansion axle, the fixed seat is equipped with the connecting port, and the connecting port is connected with the gas source through the pipeline, the utility model realizes the automatic inflation and deflation function of gas expansion axle under the rotation state, ensures that the gas circuit is stably connected under the dynamics, and the fixed seat connecting port of gas source pipeline connects the pneumatic slip ring, reduces the precision requirement of gas circuit connection, and convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of coil processing, and in particular to an automatic inflation and deflation air expansion shaft system. Background Technology

[0002] An air shaft is a specially designed winding and unwinding shaft. Its surface expands after inflation and quickly retracts after deflation. Due to its ease of use and speed, air shafts are widely used in various industries. However, conventional methods require inflation and deflation of the air shaft while it is stopped. The inflation port must be precisely aligned with the air hose. Inflation requires force to press the interface, and the air hose itself is narrow and partially hidden inside the shaft, making it prone to leakage. Therefore, the precision required for the air hose connection is high, making operation difficult and impacting production efficiency. Furthermore, the air circuit needs to be disassembled multiple times during each roll change, increasing changeover time and labor intensity.

[0003] Therefore, there is an urgent need for an air expansion shaft system that can achieve automatic inflation and deflation, continuous operation, controllable tension, and convenient roll changing. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing an automatic inflation and deflation air shaft system.

[0005] To solve the above-mentioned technical problems, this utility model achieves its solution through the following technical solution:

[0006] An automatic inflation / deflation air shaft system includes a frame, a central shaft, an air shaft, and pneumatic slip rings.

[0007] The frame includes a mounting bracket; the two ends of the central shaft are mounted on the frame via rotary bearings, and at least one end of the central shaft is connected to a rotary power source that drives its rotation; the center of the mounting bracket has a hole for the central shaft to pass through.

[0008] The air shaft is connected to a winding power source that drives its rotation. The two air shafts are horizontally installed at both ends of the mounting bracket. The air shaft has an air inlet and outlet channel for inflation or deflation and retraction. One end of the air inlet and outlet channel is connected to the inner cavity of the air shaft, and an air pipe is provided at the outer end of the air inlet and outlet channel.

[0009] The pneumatic slip ring is fixedly installed at the end of the air expansion shaft. The pneumatic slip ring includes a rotating seat and a fixed seat. The rotating seat is fixedly installed at the end of the air expansion shaft where the air pipe is located. A radially extending connector is installed at the center of the rotating seat, connecting to the air pipe of the air expansion shaft. The fixed seat has a connection port, which connects to the air source via a pipe. The pipe and the connection port are detachably connected. A gas connection channel is opened inside the fixed seat, connecting the space inside the connector and the space between the connection port. The rotating seat and the fixed seat can rotate relative to each other, and the rotating seat rotates synchronously with the air expansion shaft. This achieves automatic inflation and deflation of the air expansion shaft while it is rotating. The design of the rotating and fixed seats of the pneumatic slip ring ensures a stable connection of the air path under dynamic conditions, maintaining the connection to the air source even during the operation of the air expansion shaft. When rotating the air expansion shaft to change the roll material, the air source can be quickly connected to the fixed seat connection port of the pneumatic slip ring via a pipe, reducing the accuracy requirements for the air path connection and facilitating operation.

[0010] Preferably, a control element is installed between the pipeline and the air source. This control element includes a solenoid valve, a flow-limiting valve, and a check valve. The solenoid valve, located in the pipeline passage, controls the inflation or deflation of the air shaft. The flow-limiting valve, also located in the pipeline passage, blocks the airflow after a set inflation time. The check valve, located in the pipeline passage, prevents backflow of gas from the air shaft after inflation stops, keeping the air shaft open. The solenoid valve enables intelligent control of inflation and deflation, the flow-limiting valve prevents over-inflation to ensure system safety, and the check valve maintains the air shaft open to prevent the roll material from loosening. This improves the system's control accuracy and response speed.

[0011] Preferably, the piping runs through the central axis to the side of the frame away from the pneumatic slip ring, and all control components are located on this side of the frame. This avoids interference between the air path and rotating parts, improving equipment operational safety; the centralized arrangement of control components facilitates maintenance and operation.

[0012] Preferably, the diameter of the connector is larger than the diameter of the air tube, and the air tube and connector are plugged in. The plug-in structure simplifies the air circuit connection, facilitates quick assembly and disassembly, and the large-diameter connector increases the airflow and improves inflation and deflation efficiency.

[0013] Preferably, the air inlet and outlet channels of the air shaft are located on one side of the mounting bracket.

[0014] Preferably, a tensioning bracket is fixedly installed on the central shaft, and tensioning rollers parallel to the central shaft are installed on both sides of the tensioning bracket.

[0015] Preferably, the tensioning bracket rotates synchronously with the central axis. This facilitates the layout and maintenance of the air path and reduces air path interference when the air expansion shaft rotates.

[0016] Preferably, the mounting bracket is vertically connected to the central axis and can rotate. The frame is provided with a pneumatic shaft limiting mechanism on the side away from the mounting bracket. The pneumatic shaft limiting mechanism includes clamps on both sides. The clamps are connected to a clamp power source that drives them to move in opposite directions. When the mounting bracket is horizontal, the clamps driven by the lifting power source move in opposite directions to clamp one side of the pneumatic shaft, while the other pneumatic shaft is suspended on the side away from the mounting bracket.

[0017] Preferably, when the air shaft is released, the mounting bracket rotates with the central axis, and when the air shaft is fixed, the mounting bracket remains horizontal.

[0018] Preferably, the chucks are roller-shaped and are located at the four corners of the air shaft to secure the ends of the air shaft.

[0019] This invention, employing the above technical solutions, achieves significant technical advantages: Through the cooperation of a pneumatic slip ring and control components, automatic inflation and deflation of the air shaft during rotation is realized; the connection between the pipeline and the pneumatic slip ring is convenient and quick, requiring low precision, and reliable inflation can be achieved without precise alignment of the center hole, facilitating operator control of the air shaft's inflation and deflation, reducing assembly and maintenance difficulty, and improving work efficiency. The rotation of the air shaft is independent of the external pipeline connected to the air source; the air source does not need to be disassembled during the inflation / deflating / unwinding time range. A combination of flow-limiting and stop valves prevents over-inflation and bursting of the air bladder and ensures the air bladder remains open for extended periods. Changing the position of the air shaft or rotating the roll does not affect the inflation / deflating device, improving the efficiency of changing rolls. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 yes Figure 1 A magnified view of part A in the image;

[0022] Figure 3 This is a structural schematic diagram of the present invention from another angle;

[0023] Figure 4 This is a top view of the present invention;

[0024] Figure 5 yes Figure 4 BB section view;

[0025] Figure 6 yes Figure 5 A magnified view of part C;

[0026] Figure 7 This is a partial structural schematic diagram of the present invention.

[0027] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Frame; 11. Mounting bracket; 2. Central shaft; 21. Rotary bearing; 3. Air shaft; 31. Air inlet / outlet channel; 32. Air pipe; 4. Pneumatic slip ring; 41. Rotating seat; 411. Connector; 42. Fixed seat; 421. Connection port; 43. Gas connection channel; 5. Pipeline; 61. Solenoid valve; 62. Flow restrictor valve; 63. Check valve; 7. Tensioning bracket; 71. Tensioning roller; 8. Air shaft limiting mechanism; 81. Chuck; 82. Chuck power source. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] An automatic inflation / deflation air shaft system, such as Figure 1-3 As shown, it includes a frame 1, a central shaft 2, an air shaft 3, and a pneumatic slip ring 4.

[0031] The frame 1 includes a mounting bracket 11; the two ends of the central shaft 2 are mounted on the frame 1 via rotary bearings 21, and at least one end of the central shaft 2 is connected to a rotary power source that drives it to rotate; the center of the mounting bracket 11 has a hole for the central shaft 2 to pass through.

[0032] The air shaft 3 is connected to a winding power source that drives it to rotate. The two air shafts 3 are horizontally installed at both ends of the mounting bracket 11. The air shaft 3 has an air inlet and outlet channel 31 for inflation or deflation and retraction. One end of the air inlet and outlet channel 31 is connected to the inner cavity of the air shaft 3, and an air pipe 32 is provided at the outer end of the air inlet and outlet channel 31.

[0033] like Figure 4-6 As shown, the pneumatic slip ring 4 is fixedly installed at the end of the air expansion shaft 3. The pneumatic slip ring 4 includes a rotating seat 41 and a fixed seat 42.

[0034] The rotating seat 41 is fixedly installed at one end of the air expansion shaft 3 where the air pipe 32 is located. A radially extending connector 411 is installed at the center of the rotating seat 41, and the connector 411 is connected to the air pipe 32 of the air expansion shaft. The fixed seat 42 is provided with a connection port 421, which is connected to the air source through a pipe 5. The pipe 5 and the connection port 421 are detachably connected. A gas connection channel 43 is opened in the fixed seat 42 to connect the space inside the connector 411 and the space between the connection port 421. The rotating seat 41 and the fixed seat 42 can rotate relative to each other, and the rotating seat 41 rotates synchronously with the air expansion shaft 3.

[0035] like Figure 3As shown, a control element is provided between the pipeline 5 and the air source. The control element includes a solenoid valve 61, a flow limiting valve 62, and a stop valve 63. The solenoid valve 61 is located in the passage of the pipeline 5 and is used to control the inflation or deflation of the air shaft 3. The flow limiting valve 62 is located in the passage of the pipeline 5 and is used to block the airflow after the inflation reaches a set time. The stop valve 63 is located in the passage of the pipeline 5 and is used to prevent the gas in the air shaft 3 from flowing back after the inflation stops, so that the air shaft 3 remains open.

[0036] like Figure 7 As shown, the pipe 5 passes through the central axis 2 and extends to the side of the frame 1 away from the pneumatic slip ring 4, and the control elements are all located on this side of the frame 1.

[0037] The diameter of the connector 421 is larger than the diameter of the trachea 32, and the trachea 32 is inserted into the connector 411.

[0038] The air inlet and outlet channels 31 of the air shaft 3 are located on one side of the mounting bracket 11.

[0039] A tensioning bracket 7 is fixedly installed on the central shaft 2, and tensioning rollers 71 parallel to the central shaft 2 are installed on both sides of the tensioning bracket 7.

[0040] The tensioning bracket 7 rotates synchronously with the central axis 2.

[0041] The mounting bracket 11 is vertically connected to the central shaft 2 and can rotate. The frame 1 is provided with an air shaft limiting mechanism 8 on the side away from the mounting bracket 11. The air shaft limiting mechanism 8 includes clamps 81 on both sides. The clamps 81 are connected to a clamp power source 82 that drives them to move in opposite directions. When the mounting bracket 11 is horizontal, the clamps 81 driven by the lifting power source move in opposite directions to clamp one side of the air shaft 3, while the other air shaft 3 is suspended on the side away from the mounting bracket 11.

[0042] When the air shaft 3 is released, the mounting bracket 11 rotates with the central shaft 2. When the air shaft 3 is fixed, the mounting bracket 11 remains horizontal.

[0043] The chuck 81 is roller-shaped and is located at the four corners of the air shaft 3 to fasten the ends of the air shaft 3.

[0044] In this embodiment, the specific system structure is as follows:

[0045] - Rack 1: Includes mounting bracket 11, used to support the entire system structure;

[0046] - Central shaft 2: Both ends are mounted on the frame 1 via rotary bearings 21, and one end is connected to a rotary power source, which can drive the entire system to rotate;

[0047] - Air expansion shaft 3: Both ends are horizontally installed on the mounting bracket 11, and are provided with air inlet and outlet channels 31 and air pipes 32. It clamps the roll material by inflating and expanding;

[0048] - Pneumatic slip ring 4: Installed at the end of the air expansion shaft 3, including a rotating seat 41 and a fixed seat 42, to achieve a stable connection of the air circuit in the rotation state;

[0049] - Control components: including solenoid valve 61, flow limiting valve 62 and check valve 63, used to control inflation, flow limiting and pressure maintenance;

[0050] -Auxiliary structures: such as tensioning bracket 7 and air shaft limiting mechanism 8, to improve system stability and roll changing efficiency.

[0051] The specific working principle is as follows:

[0052] During inflation, the mounting bracket 11 is horizontal, and the air shaft on one side is clamped, keeping the mounting bracket 11 horizontal for easy material replacement by the operator. The air source is connected to the connection port 421 of the fixed seat 42 through the pipe 5. The gas enters the rotating seat 41 through the gas connection channel 43 in the pneumatic slip ring 4. The rotating seat 41 is fixedly connected to the air shaft 3, and the gas enters the air shaft through the connector 411 and the air pipe 32. The control system starts the solenoid valve 61, and the flow limiting valve 62 controls the inflation time. When the inflation time reaches the preset value, the check valve 63 opens to prevent gas backflow, keeping the air shaft in the open state, and then the mounting bracket 11 rotates.

[0053] The air shaft rotates to one side of its suspension for feeding. The mounting bracket 11 then rotates or remains stationary, and the air shaft 3 winds the material. This winding action is performed on either the suspended end or the side with the air shaft limiting mechanism 8. After winding, the wound side is deflated and unloaded by rotating or not rotating the mounting bracket 11 to the suspended side. During deflating, the stop valve 63 is closed, and the solenoid valve 61 is opened to allow the exhaust channel, releasing the gas inside the air shaft through its original path, thus achieving retraction and facilitating unloading or replacement of the roll. When the mounting bracket 11 rotates, the air shaft limiting mechanism 8 releases the clamp, restoring system rotation.

[0054] When the mounting bracket 11 rotates, the central shaft 2 is driven to rotate by a rotational power source, which in turn drives the mounting bracket 11 and the air shaft 3 to rotate synchronously. The rotational power source is a motor, a pneumatic cylinder, or an electric cylinder, or they are connected to a transmission mechanism. The tensioning bracket 7 rotates with the central shaft, and the tensioning roller 71 on it adjusts the tension of the roll material.

[0055] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. An automatic inflation / deflation air shaft system, characterized in that, include The rack (1) includes a mounting bracket (11); The central shaft (2) is mounted on the frame (1) at both ends by rotating bearings (21). At least one end of the central shaft (2) is connected to a rotational power source that drives it to rotate. Mounting bracket (11), the center of which is provided with a hole for the central shaft (2) to pass through; An air shaft (3) is connected to a winding power source that drives it to rotate. Two air shafts (3) are horizontally installed at both ends of the mounting bracket (11). The air shaft (3) has an air inlet and outlet channel (31) for inflation or deflation and retraction. One end of the air inlet and outlet channel (31) is connected to the inner cavity of the air shaft (3), and an air pipe (32) is provided at the outer end of the air inlet and outlet channel (31). A pneumatic slip ring (4) is fixedly installed at the end of the air expansion shaft (3), including... - Rotary seat (41), the rotating seat (41) is fixedly installed at one end of the air pipe (32) of the air expansion shaft (3), and a radially extending connector (411) is installed at the center of the rotating seat (41), the connector (411) is connected to the air pipe (32) of the air expansion shaft; - Fixing base (42), fixing base (42) is provided with connection port (421), connection port (421) is connected to air source through pipe (5), and pipe (5) and connection port (421) are detachably connected; - A gas connection channel (43) is provided in the fixed seat (42) to connect the space between the space inside the connector (411) and the connection port (421). The rotating seat (41) and the fixed seat (42) can rotate relative to each other and the rotating seat (41) rotates synchronously with the air expansion shaft (3).

2. The automatic inflation / deflation air shaft system according to claim 1, characterized in that: A control element is installed between the pipeline (5) and the gas source. The control element includes... Solenoid valve (61) is installed on the pipeline (5) passage and is used to control the inflation or deflation of the air shaft (3); A flow-limiting valve (62) is installed on the pipeline (5) passage to block the airflow after the inflation reaches a set time; A check valve (63) is installed on the pipeline (5) passage to prevent the gas in the air shaft (3) from flowing back after the inflation stops, so that the air shaft (3) remains open.

3. The automatic inflation / deflation air shaft system according to claim 2, characterized in that: The pipe (5) passes through the central axis (2) and goes around to the side of the frame (1) away from the pneumatic slip ring (4), and the control elements are all located on this side of the frame (1).

4. The automatic inflation / deflation air shaft system according to claim 1, characterized in that: The diameter of the connector (421) is larger than the diameter of the trachea (32), and the trachea (32) is inserted into the connector (411).

5. The automatic inflation / deflation air shaft system according to claim 1, characterized in that: The air inlet and outlet passage (31) of the air shaft (3) is located on one side of the mounting bracket (11).

6. The automatic inflation / deflation air shaft system according to claim 1, characterized in that: A tensioning bracket (7) is fixedly installed on the central shaft (2), and tensioning rollers (71) parallel to the central shaft (2) are installed on both sides of the tensioning bracket (7).

7. The automatic inflation / deflation air shaft system according to claim 6, characterized in that: The tensioning bracket (7) rotates synchronously with the central axis (2).

8. An automatic inflation / deflation air shaft system according to any one of claims 1-7, characterized in that: The mounting bracket (11) is vertically connected to the central shaft (2) and can rotate. The frame (1) is provided with an air shaft limiting mechanism (8) on the side away from the mounting bracket (11). The air shaft limiting mechanism (8) includes chucks (81) on both sides. The chucks (81) are connected to a chuck power source (82) that drives them to move in opposite directions. When the mounting bracket (11) is horizontal, the chucks (81) driven by the lifting power source (82) move in opposite directions to clamp one side of the air shaft (3), and the other air shaft (3) is suspended on the side away from the mounting bracket (11).

9. The automatic inflation / deflation air shaft system according to claim 8, characterized in that: When the air shaft limiting mechanism (8) releases the air shaft (3), the mounting bracket (11) rotates with the central shaft (2). When the air shaft limiting mechanism (8) fixes the air shaft (3), the mounting bracket (11) remains horizontal.

10. An automatic inflation / deflation air shaft system according to claim 9, characterized in that: The chuck (81) is roller-shaped and is located at the four corners of the air shaft (3) to fasten the ends of the air shaft (3).

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