Pneumatic air tightness testing machine

Abstract

The application discloses a pneumatic airtight testing machine and relates to the technical field of wire airtight testing, which comprises an input-output shell, a limiting hole is formed in the front side of the input-output shell and is in communication with the inside of the input-output shell, a U-shaped frame is fixedly installed in the input-output shell, electric push rods are fixedly arranged on the two sides of the U-shaped frame in the horizontal direction, the driving ends of the electric push rods are slidably extended into the U-shaped frame, clamping blocks are fixedly arranged on the driving ends, the clamping blocks are in abutment with wire tubes, a circular groove is arranged on the front side of the U-shaped frame, the wire tubes are movably inserted into the circular groove, the clamping blocks are in abutment with the wire tubes, and an air pump is fixedly installed on the rear side of the U-shaped frame. The wire tube is inserted into the limiting hole, then the two electric push rods are turned on, the driving ends of the electric push rods are elongated to drive the clamping blocks to move and abut against the outer surfaces of the wire tubes, the wire tubes can be clamped and wrapped, the working time of personnel is reduced, and the production efficiency is improved, which has important promoting significance.

Description

Technical Field

[0001] This invention relates to the field of wire air tightness testing technology, specifically to a pneumatic air tightness testing machine. Background Technology

[0002] The current industry practice for testing wire leakage is to use a leakage testing machine to test the product directly. This requires manual wrapping material (such as modeling clay) to completely wrap the product at the testing point, which is time-consuming and labor-intensive.

[0003] Therefore, this invention changes the traditional concept and develops an auxiliary machine that is paired with a leak tester. It can automatically clamp the product to be tested, reducing manual labor time and intensity and increasing productivity. Summary of the Invention

[0004] The purpose of this invention is to provide a pneumatic airtightness testing machine to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the pneumatic airtightness testing machine provided by the present invention includes an output and input housing. A limiting hole communicating with the interior is opened on the front side of the output and input housing. A U-shaped frame is fixedly installed inside the output and input housing. Electric push rods are fixedly arranged on both sides of the U-shaped frame along the horizontal direction. The driving end of the electric push rod slides into the U-shaped frame and is fixedly arranged with a clamping block. The clamping block cooperates with the wire tube to abut.

[0006] Furthermore, a circular groove is provided on the front side of the U-shaped frame, and a wire tube is movably inserted into the circular groove. The clamping block abuts against the wire tube. An air pump is also fixedly installed on the rear side of the U-shaped frame, and the air outlet of the air pump extends into the circular groove and is connected to the wire tube.

[0007] Furthermore, limit strips are fixedly installed at both ends of the inner rear wall of the U-shaped frame along the horizontal direction, and a buckle groove is fixedly installed on the rear side of the clamping block, with the rear side of the buckle groove slidingly sleeved on the limit strip.

[0008] Furthermore, a cylinder is also fixedly installed horizontally near the rear side inside the input / output housing. The circular groove is slidably inserted into the center of the U-shaped frame, and its rear side is fixedly connected to the drive end of the cylinder.

[0009] Furthermore, a storage battery is also fixedly installed on one side of the input / output housing, and the storage battery is electrically connected to the air pump, electric push rod, and cylinder.

[0010] Furthermore, a switch is fixedly installed on the front side of the input / output housing. The switch is electrically connected to the air pump, electric push rod, cylinder, and battery. Heat dissipation holes communicating with the interior are provided on both sides of the input / output housing.

[0011] Furthermore, a stabilizing base is provided below the input / output housing, and a mounting groove is opened on the top of the stabilizing base in the horizontal direction. A threaded screw is rotatably installed in the mounting groove in the horizontal direction. Two nut pairs are symmetrically threaded on the threaded screw. A fixing plate is fixedly installed at the center of the bottom of the input / output housing. A rotating component is rotatably installed between the nut pairs and the fixing plate. A drive motor is fixedly installed on one side of the stabilizing base in the horizontal direction. The drive shaft of the drive motor is connected to one end of the threaded screw.

[0012] Furthermore, a mounting base is fixedly installed on the top of the nut assembly, and a fixing base is fixedly installed at the center of the bottom of the fixing plate. A first pin and a second pin are respectively provided inside the mounting base and the fixing base, and the two ends of the rotating member are respectively rotatably sleeved on the first pin and the second pin.

[0013] Furthermore, a limiting seat is fixedly installed on each of the two rotating parts on opposite sides, and a third pin is provided inside the limiting seat. A piston rod is rotatably sleeved on both of the third pins.

[0014] Furthermore, the nut assembly has through holes that penetrate both sides, and a guide rod is inserted into the through hole. Both ends of the guide rod are fixedly installed in the mounting groove. The nut assembly has four mounting cavities and mounting openings circumferentially. The mounting cavities are connected to the mounting openings and the through holes. A ball bearing is rotatably disposed in the mounting cavity. Part of the ball bearing extends through the mounting opening into the through hole and abuts against the guide rod. The portion of the ball bearing located in the mounting cavity is much larger than the portion in the through hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are: by inserting the wire tube into the limiting hole and then activating the two electric push rods, the driving end of the electric push rods can extend to drive the clamping block to move and abut against the outer surface of the wire tube, thereby enveloping and clamping it, reducing personnel operation time, and having an important significance for improving production efficiency.

[0016] Compared with the prior art, the beneficial effects of the present invention are: through the cooperation of the limiting strip and the buckle groove, the buckle groove can be driven to slide on the limiting strip when the clamping block moves, which can limit the movement direction of the clamping block and avoid the problem of the clamping block moving off course.

[0017] Compared with the prior art, the beneficial effects of the present invention are: by opening the cylinder, the driving end of the cylinder can extend and retract to drive the circular groove to move in the U-shaped frame, which can push the wire tube, thereby facilitating position adjustment and adapting to wires of different lengths.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: by turning on the drive motor, the drive shaft of the drive motor can drive the threaded screw to rotate, so that the two nut pairs will move closer or further away from each other along the direction set by the guide rod. During this process, the two rotating parts will rotate slightly and push and pull the output and input housing to move vertically up and down, thereby adjusting the height of the output and input housing to adapt to the wire tubes on the detection platform of different heights, thus improving the convenience of detection.

[0019] Compared with the prior art, the beneficial effects of the present invention are: through the cooperation of the limiting seat and the piston rod, the piston rod can be extended and retracted during the rotation of the two rotating parts, which not only avoids the problem of motion interference between the two rotating parts, but also improves the stability of the connection between the two rotating parts.

[0020] Compared with the prior art, the beneficial effects of the present invention are: when the nut pair moves along the direction set by the guide rod, the guide rod can drive the ball to rotate in the mounting cavity and mounting opening. This not only facilitates the guidance and limiting of the nut pair and avoids the problem of movement deviation, but also changes the sliding friction between the nut pair and the guide rod to rolling friction, reducing the friction force and thus reducing the wear of the guide rod and the nut pair, making its movement smoother, and also saving the power of the drive motor. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the overall front exterior of the present invention; Figure 2 This is a three-dimensional structural diagram showing the cross-section of the inside of the output housing of the present invention; Figure 3 This is a three-dimensional structural diagram of the external side of the output housing of the present invention; Figure 4 This is a three-dimensional structural diagram of the overall upward-facing exterior of the present invention; Figure 5 This is a top-view three-dimensional structural diagram of the stabilizer of the present invention; Figure 6 This is a three-dimensional structural schematic diagram of the internal cross-section of the side of the nut assembly of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle.

[0022] In the diagram: 1. Input / output housing; 2. Limiting hole; 3. U-shaped frame; 4. Circular groove; 5. Air pump; 6. Cable conduit; 7. Electric push rod; 8. Clamping block; 9. Limiting strip; 10. Clip groove; 11. Cylinder; 12. Battery; 13. Switch; 14. Heat dissipation hole; 15. Stabilizing seat; 16. Mounting groove; 17. Threaded screw; 18. Nut pair; 19. Fixing plate; 20. Rotating component; 21. Drive motor; 22. Mounting seat; 23. Fixing seat; 24. Limiting seat; 25. Piston rod; 26. Through hole; 27. Guide rod; 28. Mounting cavity; 29. ​​Mounting port; 30. Ball bearing. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0026] Please see Figure 1-7The present invention provides a technical solution: a pneumatic airtightness testing machine, including an output and input housing 1, a limiting hole 2 communicating with the interior is opened on the front side of the output and input housing 1, a U-shaped frame 3 is fixedly installed inside the output and input housing 1, electric push rods 7 are fixedly arranged on both sides of the U-shaped frame 3 along the horizontal direction, the driving end of the electric push rod 7 slides into the U-shaped frame 3 and is fixedly arranged with a clamping block 8, the clamping block 8 cooperates with the wire tube 6 to abut; A circular groove 4 is provided on the front side of the U-shaped frame 3. A wire tube 6 is movably inserted into the circular groove 4. The clamp 8 cooperates with the wire tube 6. An air pump 5 is also fixedly installed on the rear side of the U-shaped frame 3. The air outlet of the air pump 5 extends into the circular groove 4 and is connected to the wire tube 6.

[0027] In practice, the wire tube 6 is inserted into the limiting hole 2 and positioned in the inner circle of the circular groove 4. Then, the two electric push rods 7 are turned on, which extends the drive end of the electric push rods 7 to drive the clamping block 8 to move and abut against the outer surface of the wire tube 6, thus clamping it in a wrapping manner. Then, the air pump 5 is turned on, which injects gas into the wire tube 6, which facilitates the airtightness test of the wire tube 6.

[0028] See Figure 1-7 Limiting strips 9 are fixedly installed at both ends of the inner rear wall of the U-shaped frame 3 along the horizontal direction. A buckle groove 10 is fixedly installed on the rear side of the clamping block 8, and the rear side of the buckle groove 10 is slidably sleeved on the limiting strip 9.

[0029] In specific implementation, based on the above implementation, when the clamping block 8 moves, it can drive the buckle groove 10 to slide on the limiting strip 9, which can limit the movement direction of the clamping block 8 and avoid the problem of the clamping block 8 moving off course.

[0030] See Figure 1-7 A cylinder 11 is also fixedly installed horizontally near the rear side inside the input / output housing 1. The circular groove 4 is slidably inserted into the center of the U-shaped frame 3, and the rear side is fixedly connected to the drive end of the cylinder 11.

[0031] In specific implementation, based on the above implementation, by opening the cylinder 11, the drive end of the cylinder 11 can extend and retract, causing the circular groove 4 to move within the U-shaped frame 3, which can push the wire tube 6, thereby facilitating position adjustment and adapting to different lengths of wire.

[0032] See Figure 1-7A battery 12 is fixedly installed on one side of the input / output housing 1. The battery 12 is electrically connected to the air pump 5, the electric push rod 7, and the cylinder 11. A switch 13 is fixedly installed on the front side of the input / output housing 1. The switch 13 is electrically connected to the air pump 5, the electric push rod 7, the cylinder 11, and the battery 12. This facilitates power supply and control. In addition, we need to install an electrical control component on one side of the battery 12, with a built-in PLC, to control the machine's operation and the running status of the leak tester. Since the electrical control component is also existing technology and is not a problem that needs to be solved in the background of this specification, it will not be described in detail.

[0033] See Figure 1-7 Both sides of the input / output housing 1 are provided with heat dissipation holes 14 that communicate with the interior. This allows for timely dissipation of heat generated by the electrical components inside the input / output housing 1, ensuring its operational performance.

[0034] See Figure 1-7 A stabilizing seat 15 is provided below the input / output housing 1. A mounting groove 16 is opened on the top of the stabilizing seat 15 in the horizontal direction. A threaded screw 17 is rotatably installed in the mounting groove 16 in the horizontal direction. Two nut pairs 18 are symmetrically threaded on the threaded screw 17. A fixing plate 19 is fixedly installed at the center of the bottom of the input / output housing 1. A rotating part 20 is rotatably installed between the nut pairs 18 and the fixing plate 19. A drive motor 21 is fixedly installed on one side of the stabilizing seat 15 in the horizontal direction. The drive shaft of the drive motor 21 is connected to one end of the threaded screw 17. A mounting base 22 is fixedly installed on the top of the nut assembly 18, and a fixing base 23 is fixedly installed at the center of the bottom of the fixing plate 19. A first pin and a second pin are respectively provided in the mounting base 22 and the fixing base 23. The two ends of the rotating part 20 are respectively rotatably sleeved on the first pin and the second pin.

[0035] In specific implementation, based on the above implementation, by turning on the drive motor 21, the drive shaft of the drive motor 21 can drive the threaded screw 17 to rotate, so that the two nut pairs 18 will move closer or further away from each other along the direction set by the guide rod 27. During this process, the two rotating parts 20 will rotate slightly and push and pull the output and input housing 1 to move vertically up and down, thereby adjusting the height of the output and input housing 1 to adapt to the wire tube 6 on the detection platform of different heights, thus improving the convenience of detection.

[0036] See Figure 1-7 Each of the two rotating parts 20 is fixedly mounted on one side opposite to the other with a limit seat 24. A third pin is provided inside the limit seat 24, and a piston rod 25 is rotatably sleeved on the two third pins.

[0037] In specific implementation, based on the above implementation, during the rotation of the two rotating parts 20, the piston rod 25 can be extended or retracted, which can not only avoid the problem of motion interference between the two rotating parts 20, but also improve the stability of the connection between the two rotating parts 20.

[0038] See Figure 1-7 The nut assembly 18 has through holes 26 that communicate with both sides. A guide rod 27 is inserted into the through hole 26. Both ends of the guide rod 27 are fixedly installed in the mounting groove 16. The nut assembly 18 has four mounting cavities 28 and mounting openings 29 arranged in a ring. The mounting cavities 28 are connected to the mounting openings 29 and the through holes 26. A ball bearing 30 is rotatably installed in the mounting cavity 28. Part of the ball bearing 30 extends through the mounting opening 29 into the through hole 26 and abuts against the guide rod 27. The portion of the ball bearing 30 in the mounting cavity 28 is much larger than the portion in the through hole 26.

[0039] In specific implementation, based on the above implementation, when the nut assembly 18 moves along the direction set by the guide rod 27, the guide rod 27 can drive the ball bearing 30 to rotate within the mounting cavity 28 and the mounting opening 29. This not only facilitates the guidance and limiting of the nut assembly 18, avoiding the problem of movement deviation, but also changes the sliding friction between the nut assembly 18 and the guide rod 27 into rolling friction, reducing friction and thus reducing the wear of the guide rod 27 and the nut assembly 18, making its movement smoother, and also saving the power of the drive motor 21.

[0040] Working principle: Before use, all electrical appliances inside and outside the input / output housing 1 need to be electrically connected to the battery 12 via wiring. It is also necessary to avoid the wiring from becoming tangled due to the movement of the components. Wiring needs to be buried and planned and organized to supply power to the electrical appliances, thereby ensuring their normal operation and switching on and off. Since the battery 12 supplies power to the electrical components and the connection is existing technology and is not a problem that needs to be solved in the background technology of this manual, it will not be explained in detail.

[0041] In use, first insert the wire tube 6 into the limiting hole 2 and position it in the inner circle of the circular groove 4. Then turn on the two electric push rods 7, which will extend the drive end of the electric push rods 7 to drive the clamping block 8 to move and abut against the outer surface of the wire tube 6, thus clamping it. Then turn on the air pump 5, which will inject gas into the wire tube 6, making it convenient to perform an airtightness test on the wire tube 6.

[0042] During the above operation, when the clamping block 8 moves, it can drive the buckle groove 10 to slide on the limiting strip 9, which can limit the movement direction of the clamping block 8 and avoid the problem of the clamping block 8 moving off course.

[0043] In addition, by opening the cylinder 11, the drive end of the cylinder 11 can extend and retract, causing the circular groove 4 to move within the U-shaped frame 3, which can push the wire tube 6, thus facilitating position adjustment and adapting to wires of different lengths. During the above operation, by turning on the drive motor 21, the drive shaft of the drive motor 21 can drive the threaded screw 17 to rotate, so that the two nut pairs 18 will move closer or further away from each other along the direction set by the guide rod 27. During this process, the two rotating parts 20 will rotate slightly and push and pull the output housing 1 to move vertically up and down, thereby adjusting the height of the output housing 1 to adapt to the wire tube 6 on the detection platform of different heights, thus improving the convenience of detection.

[0044] In addition, during the rotation of the two rotating parts 20, the piston rod 25 can be extended and retracted, which not only avoids the problem of motion interference between the two rotating parts 20, but also improves the stability of the connection between the two rotating parts 20.

[0045] Finally, it should be noted that when the nut assembly 18 moves along the direction set by the guide rod 27, the guide rod 27 can drive the ball bearing 30 to rotate within the mounting cavity 28 and the mounting opening 29. This not only facilitates the guidance and limiting of the nut assembly 18, preventing movement deviation, but also changes the sliding friction between the nut assembly 18 and the guide rod 27 into rolling friction, reducing friction and thus reducing wear on the guide rod 27 and the nut assembly 18, making their movement smoother. It also saves the power of the drive motor 21.

[0046] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pneumatic airtightness testing machine, comprising an inlet / outlet housing (1), characterized in that, The front side of the input / output housing (1) is provided with a limiting hole (2) that communicates with the interior. A U-shaped frame (3) is fixedly installed inside the input / output housing (1). Electric push rods (7) are fixedly installed on both sides of the U-shaped frame (3) along the horizontal direction. The driving end of the electric push rod (7) slides into the U-shaped frame (3) and is fixedly provided with a clamping block (8). The clamping block (8) cooperates with the wire tube (6) to abut.

2. The pneumatic airtightness testing machine as described in claim 1, characterized in that: A circular groove (4) is provided on the front side of the U-shaped frame (3), and a wire tube (6) is movably inserted into the circular groove (4). The clamp (8) cooperates with the wire tube (6) to abut against it. An air pump (5) is also fixedly installed on the rear side of the U-shaped frame (3). The air outlet of the air pump (5) extends into the circular groove (4) and is connected to the wire tube (6).

3. The pneumatic airtightness testing machine as described in claim 1, characterized in that: Limiting strips (9) are fixedly installed at both ends of the inner rear wall of the U-shaped frame (3) along the horizontal direction. A buckle groove (10) is fixedly installed on the rear side of the clamping block (8). The rear side of the buckle groove (10) is slidably sleeved on the limiting strip (9).

4. The pneumatic airtightness testing machine as described in claim 2, characterized in that: A cylinder (11) is also fixedly installed in the horizontal direction near the rear side of the input / output housing (1). The circular groove (4) is slidably inserted into the center of the U-shaped frame (3), and its rear side is fixedly connected to the drive end of the cylinder (11).

5. The pneumatic airtightness testing machine as described in claim 4, characterized in that: A storage battery (12) is also fixedly installed on one side of the input / output housing (1). The storage battery (12) is electrically connected to the air pump (5), the electric push rod (7), and the cylinder (11).

6. The pneumatic airtightness testing machine as described in claim 5, characterized in that: A switch (13) is fixedly installed on the front side of the input / output housing (1). The switch (13) is electrically connected to the air pump (5), electric push rod (7), cylinder (11) and battery (12). Heat dissipation holes (14) that communicate with the interior are opened on both sides of the input / output housing (1).

7. The pneumatic airtightness testing machine as described in claim 1, characterized in that: A stabilizing seat (15) is provided below the input / output housing (1). A mounting groove (16) is provided on the top of the stabilizing seat (15) in the horizontal direction. A threaded screw (17) is rotatably provided in the mounting groove (16) in the horizontal direction. Two nut pairs (18) are symmetrically threaded on the threaded screw (17). A fixing plate (19) is fixedly installed at the center of the bottom of the input / output housing (1). A rotating part (20) is rotatably provided between the nut pairs (18) and the fixing plate (19). A drive motor (21) is fixedly installed on one side of the stabilizing seat (15) in the horizontal direction. The drive shaft of the drive motor (21) is connected to one end of the threaded screw (17) for transmission.

8. The pneumatic airtightness testing machine as described in claim 7, characterized in that: The top of the nut pair (18) is fixedly mounted with a mounting base (22), and the center of the bottom of the fixing plate (19) is fixedly mounted with a fixing base (23). The mounting base (22) and the fixing base (23) are respectively provided with a first pin and a second pin. The two ends of the rotating part (20) are respectively rotatably sleeved on the first pin and the second pin.

9. The pneumatic airtightness testing machine as described in claim 7, characterized in that: Each of the two rotating parts (20) is fixedly mounted on a limiting seat (24) on one side opposite to the other. A third pin is provided in the limiting seat (24), and a piston rod (25) is rotatably sleeved on the two third pins.

10. The pneumatic airtightness testing machine as described in claim 7, characterized in that: The nut assembly (18) has a through hole (26) that is connected to both sides. A guide rod (27) is inserted into the through hole (26). Both ends of the guide rod (27) are fixedly installed in the mounting groove (16). The nut assembly (18) has four mounting cavities (28) and mounting openings (29) arranged in a ring. The mounting cavities (28) are connected to the mounting openings (29) and the through holes (26). A ball bearing (30) is rotatably arranged in the mounting cavity (28). Part of the ball bearing (30) extends through the mounting opening (29) into the through hole (26) and abuts against the guide rod (27). The portion of the ball bearing (30) located in the mounting cavity (28) is much larger than the portion in the through hole (26).

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