Hose installation one-way valve device and operation method

Abstract

The invention discloses a hose installation one-way valve assembling device and an operation method thereof. The hose installation one-way valve assembling device comprises an assembling table board (1), an air cylinder (2), a protective cover (3), a clamping block (4), an air inlet connector (5), a manual valve (6) and a one-way valve positioning rod (7). In the working state, air enters the air inlet connector (5), the hose (13) is pressed downwards to the one-way valve (12) to enable the inner wall of the hose (13) to form a sealed space, and along with continuous increase of air pressure, the hose (13) is expanded until the diameter of the hose (13) is larger than that of the one-way valve (12), the hose (13) moves downwards by a specified distance under the action of external downward pressure, and the one-way valve (12) reaches a specified position in the hose (13). According to the device and the method, on the premise that the inner wall of the hose is not damaged, the large-size one-way valve can be rapidly and accurately arranged in the hose with the small inner diameter, and therefore the product quality, the product consistency and the production efficiency are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pipe processing, in particular to a device for installing a one-way valve in a flexible tube and a method of operation. BACKGROUND

[0002] In automotive ventilation systems, it is often necessary to install a one-way valve in a ventilation tube to achieve one-way flow of gas and prevent backflow or contamination. Such tubes are usually made of a material with a certain elasticity and have a small inner diameter. Currently, a one-way valve with an outer diameter of 9.5 mm is installed in a ventilation tube with an inner diameter of 6 mm. Since the outer diameter of the one-way valve is much larger than the inner diameter of the tube, it cannot be directly installed. The operator uses an elongated positioning rod to push the one-way valve against the end of the rod, and then uses manual force to forcibly insert the one-way valve with an outer diameter much larger than the inner diameter of the tube into the tube until it reaches the designated installation position. The essence of this method is a forced press-fit assembly with a large interference. The assembly resistance is very large due to the large interference; at the same time, the positioning rod may slip during the force process, posing a safety risk of injuring the operator's hands. During the forced insertion process, the hard and sharp outer edge of the one-way valve will be damaged by the severe scraping and extrusion of the soft inner wall of the tube, and such damage to the inner wall cannot be directly observed and found. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a device for installing a one-way valve in a flexible tube and a method of operation that can quickly and accurately install a large-size one-way valve in a small-diameter tube without damaging the inner wall of the tube, thereby greatly improving product quality, consistency, and production efficiency.

[0004] The technical solution of this invention is to provide a hose installation check valve device with the following structure: an assembly table, a cylinder, a protective cover, a clamping block, an air inlet connector, a manual valve, and a check valve positioning rod; the cylinder, protective cover, clamping block, air inlet connector, manual valve, and check valve positioning rod are all mounted on the assembly table, with the cylinder, protective cover, clamping block, and air inlet connector located at one end of the assembly table, and the manual valve and check valve positioning rod located at the other end of the assembly table; the clamping block is connected to the cylinder and is used to tighten and loosen the hose; the protective cover has a baffle parallel to the assembly table, the baffle and the assembly table forming a space, the clamping block being located within this space, and the baffle having a through hole in its center. The air inlet connector is located in the middle of the clamping block, and the position of the air inlet connector corresponds vertically to the position of the through hole. The top of the one-way valve positioning rod is provided with a positioning mechanism for positioning the one-way valve. In the initial state, one end of the hose is tightly fitted to the top of the air inlet connector, the clamping block works and clamps the hose onto the top part of the air inlet connector, and the other end of the hose abuts against the one-way valve located on the one-way valve positioning rod. In the working state, air enters through the air inlet connector, and the hose is pressed down against the one-way valve to form a sealed space on the inner wall of the hose. As the air pressure increases, the hose is expanded until its diameter is larger than the diameter of the one-way valve. Under the action of external downward pressure, the hose moves downward to a specified distance, and the one-way valve reaches a specified position inside the hose.

[0005] The assembly table is equipped with a clamping cylinder and a Z-axis telescopic guide rail. The clamping cylinder is connected to the Z-axis telescopic guide rail. The front end of the clamping cylinder is the clamping end, which clamps the end of the hose and applies a downward pressure.

[0006] In the initial state, the diameter of the one-way valve is larger than the inner diameter of the hose end, and the clamping cylinder clamps the hose end against the top surface of the one-way valve, forming an air seal.

[0007] When the manual valve is opened in the working state, air enters through the air inlet connector, and an airtight cavity is formed inside the hose. As the air pressure continues to increase, the hose expands, increasing the diameter of the hose.

[0008] Both the clamp and the air inlet connector are located below the baffle of the protective cover. After the one-way valve is assembled, the hose is pulled out from the air inlet connector, and the gas in the hose is discharged into the space formed by the baffle and the assembly table.

[0009] The technical solution of this invention is to provide an operation method for installing a one-way valve with a hose, comprising the following steps: Step 1: Insert one end of the hose into the air inlet connector; Step 2: Activate the cylinder, the clamping block operates and clamps the hose onto the top part of the air inlet connector; Step 3: Activate the Z-axis telescopic guide rail, the clamping cylinder clamps the end of the hose, and simultaneously makes the end of the hose abut against the top surface of the one-way valve; Step 4: Open the manual valve to allow air to enter through the air inlet connector. As the air pressure increases, the hose expands, increasing its diameter until it exceeds the diameter of the one-way valve. Under external downward pressure, the hose moves downward a specified distance, and the one-way valve reaches a specified position inside the hose; Step 5: Close the manual valve, the air inlet connector stops air intake, and pull both ends of the hose out from the air inlet connector and the one-way valve positioning rod respectively. The expanded hose instantly contracts, positioning the one-way valve inside the hose, completing the assembly of the hose and the one-way valve.

[0010] In the fourth step, the hose is inflated until its inner diameter is 1.5 to 3% larger than the outer diameter of the check valve, so that there is enough space between the inner wall of the hose and the outer wall of the check valve, and the outer wall of the check valve is prevented from contacting the inner wall of the hose when it is inserted into the inflated hose.

[0011] With the above structure and method, this invention has the following advantages: First, the hose is inserted into the air inlet connector. Then, the manual valve is activated, and the cylinder clamps the inserted portion of the hose via a resin clamp, placing the one-way valve on the positioning rod. Finally, the air inlet angle valve on the workbench is stepped on, allowing gas to enter the hose from the air inlet connector. Utilizing the characteristics of the one-way valve, it allows air to pass in one direction and blocks air in the opposite direction. The hose in the installation area is inflated, and the air pressure causes a short-term expansion of the hose, increasing its inner diameter. When the inner diameter of the hose is larger than the outer diameter of the one-way valve, the downward pressure allows the one-way valve to better enter the hose. This allows for the quick and accurate installation of large-diameter one-way valves into small-diameter hoses without damaging the inner wall of the hose, significantly improving product quality, consistency, and production efficiency. Furthermore, during the air intake process, the hose expands within a set time, which can also detect whether the one-way valve is functioning correctly. If a one-way valve malfunctions, the hose will not reach the required expansion coefficient within the set air intake time, thus eliminating malfunctioning or unqualified one-way valves and improving the pass rate of subsequent assembly. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the hose and check valve to be processed according to the present invention.

[0013] Figure 2 This is a schematic diagram of a hose-mounted check valve device according to the present invention.

[0014] Figure 3 This is a schematic diagram from another perspective of a hose-mounted check valve device according to the present invention.

[0015] Figure 4 This is a schematic diagram of the assembly of a hose-mounted check valve device according to the present invention.

[0016] Figure 5 This is a side view of a hose-mounted check valve device of the present invention during assembly.

[0017] Figure 6 This is a top view of a hose-mounted check valve device of the present invention during assembly.

[0018] Figure 7 This is a split diagram of the one-way valve and the one-way valve positioning rod of the present invention.

[0019] Figure 8 This is a schematic diagram showing the connection of the cylinder, clamping block, and air intake connector of the present invention.

[0020] The following components are shown in the diagram: 1. Assembly table, 2. Cylinder, 3. Protective cover, 4. Clamping block, 5. Air inlet connector, 6. Manual valve, 7. One-way valve positioning rod, 8. Baffle, 9. Through hole, 10. Clamping cylinder, 11. Z-axis telescopic guide rail, 12. One-way valve, 13. Hose. Detailed Implementation

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the present invention has a hose 13 and a one-way valve 12. The one-way valve 12 is inserted into the hose 13 from the bottom opening. The outer diameter of the one-way valve 12 is 9.5 mm, the inner diameter of the hose 13 is 6 mm, and the insertion depth is 120 mm.

[0023] like Figures 2-8 As shown, a hose-mounted one-way valve device of the present invention includes an assembly platform 1, a cylinder 2, a protective cover 3, a clamping block 4, an air inlet connector 5, a manual valve 6, and a one-way valve positioning rod 7. The cylinder 2 serves as the power source for the clamping block 4 and is connected to an air source. The air inlet connector 5 is also connected to an air source, and the manual valve 6 controls the air intake or de-energization of the air inlet connector 5. A positioning mechanism, which is a frustum, is provided at the top of the one-way valve positioning rod 7. The bottom of the one-way valve is embedded in the frustum, thereby achieving vertical and circumferential positioning.

[0024] The cylinder 2, protective cover 3, clamping block 4, air inlet connector 5, manual valve 6, and one-way valve positioning rod 7 are all mounted on the assembly table 1. The cylinder 2, protective cover 3, clamping block 4, and air inlet connector 5 are located at one end of the assembly table 1, and the manual valve 6 and one-way valve positioning rod 7 are located at the other end of the assembly table 1.

[0025] like Figure 3 and Figure 8As shown, the clamping block 4 is connected to the cylinder 2 and is used to tighten and loosen the hose 13. The protective cover 3 is provided with a baffle 8 parallel to the assembly table 1. The baffle 8 and the assembly table 1 form a space, and the clamping block 4 is located in this space. The baffle 8 has a through hole 9 in the middle. The air inlet connector 5 is located in the middle of the clamping block 4, and the position of the air inlet connector 5 corresponds vertically to the position of the through hole 9. Both the clamping block 4 and the air inlet connector 5 are located below the baffle 8 of the protective cover 3. After the one-way valve is assembled, the hose 13 is pulled out from the air inlet connector 5, and the gas in the hose 13 is discharged from the space formed by the baffle 8 and the assembly table 1.

[0026] like Figure 5 As shown, in the initial state, one end of the hose 13 is tightly fitted to the top of the air inlet connector 5, and the clamping block 4 works and clamps the hose 13 onto the top part of the air inlet connector 5. The other end of the hose 13 abuts against the one-way valve 12 located on the one-way valve positioning rod 7. In the working state, air enters through the air inlet connector 5, and the hose 13 is pressed down against the one-way valve 12 to form a sealed space on the inner wall of the hose 13. As the air pressure increases, the hose 13 is expanded until its diameter is larger than the diameter of the one-way valve 12. Under the action of external downward pressure, the hose 13 moves downward to a specified distance, and the one-way valve 12 reaches a specified position inside the hose 13.

[0027] The assembly platform 1 is equipped with a clamping cylinder 10 and a Z-axis telescopic guide rail 11. The Z-axis telescopic guide rail 11 is used to drive the clamping cylinder 10 to move up and down. The clamping cylinder 10 is connected to the Z-axis telescopic guide rail 11. The front end of the clamping cylinder 10 is the clamping end, which clamps the end of the hose 13 and applies a downward pressure.

[0028] The Z-axis telescopic guide rail 11 can be constructed from multiple nested rectangular or U-shaped sections (usually 2-4 sections). The innermost section holds the load, and the outermost section is fixed to the base. Sections are connected via linear guide sliders or special sliding bushings. Drive method: typically driven by a lead screw (ball screw or T-screw) or synchronous belt. The lead screw is generally mounted on one side of the fixed section. Alternatively, a synchronous belt / chain structure can be used, with pulleys or sprockets at both ends of the fixed frame, connected by a synchronous belt or chain. The load platform is fixed to the belt or chain, and a motor drives the axle to rotate, thus moving the platform up and down; the motor also drives the synchronous belt or chain.

[0029] In the initial state, the diameter of the one-way valve 12 is larger than the inner diameter of the end of the hose 13. The clamping cylinder 10 clamps the end of the hose 13 against the top surface of the one-way valve 12, and the two form an airtight seal. In the working state, when the manual valve 6 is opened, air enters through the air inlet connector 5, and an airtight cavity is formed inside the hose 13. As the air pressure increases, the hose 13 expands, causing the diameter of the hose 13 to increase.

[0030] The present invention provides a method for operating a hose-mounted check valve device, comprising the following steps: Step 1: Insert one end of hose 13 into air inlet connector 5; Step 2: Cylinder 2 is activated, clamping block 4 engages and clamps the hose 13 onto the top part of the air inlet connector 5. Clamping block 4 consists of two parts, left and right, in a V-shape or arc shape, to fit the outer diameter of the hose 13, ensuring that the hose 13 will not detach from the air inlet connector 5 during subsequent inflation and depressurization. The clamping force keeps the wall of the hose 13 tightly against the air inlet connector 5, forming an effective sealed chamber during inflation to prevent gas leakage and ensure sufficient pressure.

[0031] Step 3: The Z-axis telescopic guide rail 11 is activated, and the clamping cylinder 10 clamps the end of the hose, simultaneously bringing the end of the hose against the top surface of the one-way valve 12. The Z-axis telescopic guide rail 11 drives the clamped end of the hose downward until the inner hole of that end gently abuts against the top surface of the one-way valve 12, which has been pre-placed on the one-way valve positioning rod 7. This step is crucial, as it achieves precise alignment between the hose and the one-way valve, preparing for the next insertion step.

[0032] Step 4: Open the manual valve 6 and the air inlet connector 5 to allow air in. As the air pressure increases, the hose 13 expands, increasing its diameter until it exceeds the diameter of the one-way valve 12. Under external downward pressure, the hose 13 extends downward a specified distance, and the one-way valve 12 reaches a designated position inside the hose 13. The hose is inflated until its inner diameter is 1.5% to 3% larger than the outer diameter of the one-way valve, ensuring sufficient clearance between the inner wall of the hose and the outer wall of the one-way valve to prevent the outer wall of the one-way valve from contacting the inner wall of the expanded hose. By precisely controlling the air inlet pressure and time, the hose 13 expands until its inner diameter is 1.5% to 3% larger than the outer diameter of the one-way valve 12. This expansion rate range is the optimal range verified by numerous experiments. Step 5: Close the manual valve 6, stop air intake at the air inlet connector 5, and pull both ends of the hose 13 out from the air inlet connector 5 and the one-way valve positioning rod 7 respectively. The expanded hose will instantly contract, and the outer wall of the one-way valve 12 will be wrapped inside the contracted hose 13. Because the inner diameter of the hose 13 is smaller than the outer diameter of the one-way valve 12, a strong and uniform radial clamping force is generated, which firmly locks the one-way valve 12 in the designated position inside the hose 13, completing the assembly of the hose and the one-way valve.

Claims

1. A hose-mounted check valve assembly apparatus, characterized by: The utility model relates to a kind of air cylinder assembly, including assembly mesa (1), cylinder (2), protective cover (3), clamp block (4), air inlet connector (5), hand valve (6), one-way valve positioning rod (7);The cylinder (2), protective cover (3), clamp block (4), air inlet connector (5), hand valve (6), one-way valve positioning rod (7) are all installed on assembly mesa (1), the cylinder (2), protective cover (3), clamp block (4) and air inlet connector (5) are located at one end of assembly mesa (1), hand valve (6), one-way valve positioning rod (7) are located at the other end of assembly mesa (1);The clamp block (4) is connected with cylinder (2), for tightening and loosening hose (13), the protective cover (3) is equipped with baffle (8) parallel to assembly mesa (1), the baffle (8) forms a space with assembly mesa (1), the clamp block (4) is located in the space, the middle part of the baffle (8) is equipped with through-hole (9), the air inlet connector (5) is located in the middle of clamp block (4) and the position of the air inlet connector (5) is up and down with the position of through-hole (9) corresponding, the top of one-way valve positioning rod (7) is equipped with positioning mechanism, for positioning one-way valve (12);In initial state, one end of hose (13) is tightly fitted to the top of air inlet connector (5), the clamp block (4) works and hose (13) is clamped on the top part of air inlet connector (5), the other end of hose (13) is abutted to one-way valve (12) located on one-way valve positioning rod (7);In working condition, air inlet connector (5) is inhaled, and the lower pressing of hose (13) to one-way valve (12) forms a sealed space on the inner wall of hose (13), with the continuous increase of air pressure, hose (13) is opened, until the diameter is greater than the diameter of one-way valve (12), hose (13) is pressed downward to the specified distance under the action of external pressure, and one-way valve (12) reaches the specified position inside hose (13).

2. A hose-mounted check valve assembly according to claim 1, characterized in that: The assembly mesa (1) is equipped with clamping cylinder (10) and Z-axis telescopic guide rail (11), the clamping cylinder (10) is connected in Z-axis telescopic guide rail (11), and the front end of the clamping cylinder (10) is a clamping end, clamps the end of hose (13) and applies a downward pressure.

3. A hose-mounted check valve assembly according to claim 1, wherein: In initial state, the diameter of one-way valve (12) is greater than the inner diameter of the end of hose (13), and the clamping cylinder (10) clamps the end of hose (13) and abuts on the top surface of one-way valve (12), and both form an airtight seal.

4. A hose-mounted check valve assembly according to claim 1, wherein: In working condition, the air inlet connector (5) is inhaled when hand valve (6) is opened, and an airtight cavity is formed in the inside of hose (13), with the continuous increase of air pressure, hose (13) expands, so that the diameter of hose (13) increases.

5. A hose-mounted check valve assembly according to claim 1, wherein: The clamp block (4) and air inlet connector (5) are all located below the baffle (8) of protective cover (3), when one-way valve assembly is completed, the gas in hose (13) is discharged from the space formed by baffle (8) and assembly mesa (1) after hose (13) is pulled out from air inlet connector (5).

6. A method of installing a one-way valve assembly in a hose, the method comprising: It includes the following steps: First step: one end of hose (13) is loaded into air inlet connector (5); Second step: the cylinder (2) starts, the clamp block (4) works and clamps the hose (13) on the top of the air inlet joint (5); Third step: the Z-axis telescopic guide rail (11) starts, the clamp cylinder (10) clamps the end of the hose, and the end of the hose is in contact with the top surface of the one-way valve (12); Fourth step: open the hand valve (6) to make the air inlet joint (5) inlet air, and the hose (13) expands with the increasing air pressure, so that the diameter of the hose (13) increases until it is greater than the diameter of the one-way valve (12), and the hose (13) is pressed downward to a specified distance under the action of external pressure, and the one-way valve (12) reaches a specified position inside the hose (13); Fifth step: close the hand valve (6), the air inlet joint (5) stops air inlet, and the two ends of the hose (13) are pulled out from the air inlet joint (5) and the one-way valve positioning rod (7) respectively, the expanded hose instantaneously shrinks to position the one-way valve inside the hose, and the assembly of the hose and the one-way valve is completed.

7. A method of installing a one-way valve assembly in a flexible tube according to claim 6, wherein: In the fourth step, the hose inflates and expands to 1.5-3% larger than the outer diameter of the one-way valve, so that there is sufficient space between the inner wall of the hose and the outer wall of the one-way valve, avoiding the contact of the outer wall of the one-way valve with the inner wall of the expanded hose.

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