Air tightness detection device for waterproof material production

Abstract

The invention belongs to the technical field of film air leakage detection, and particularly discloses an air tightness detection device for waterproof material production, which comprises an air supply mold, a gland is arranged above the air supply mold, butt joint rings are fixed on the top of the gland close to the edges of the two sides, and a diversion assembly is arranged in the middle of the inner wall of the air supply mold. Sensing devices are arranged on the inner wall, close to the edges of the two sides, of the air supply mold. Feedback assemblies are arranged on the inner wall, close to the edges of the two sides, of the gland. According to the invention, through the arrangement of the shunting assembly, the sensing device and the feedback assembly, air flow can be uniformly blown to one side of the waterproof film, so that the waterproof film elastically expands to the other side, and whether the air leakage phenomenon occurs in the elastic expansion process of the waterproof film within a certain distance range can be detected; and the elastic expansion distance of the waterproof film can be accurately measured.

Description

Technical Field

[0001] The present invention relates to the technical field of thin film air leakage detection, and particularly to an airtightness detection device for the production of waterproof materials. Background Art

[0002] A thin film is a thin and soft transparent sheet made of plastic, adhesive, rubber or other materials. Thin films are widely used in industries such as electronics, machinery, and printing. After the production of thin films, it is necessary to detect the airtightness of the thin films to prevent the produced thin films from leaking air and affecting subsequent use.

[0003] Currently, when detecting the airtightness of a thin film, the thin film is usually covered at the air outlet, and then a floating fluff is manually held to detect whether there is air flow at the air outlet covered by the thin film, so as to determine whether the thin film leaks air. However, since the thin film covers the air outlet and there is a certain air pressure at the air outlet, the air pressure will blow the thin film outward and cause it to expand. After reaching the maximum expansion force, the thin film will rupture, resulting in an inaccurate measurement value. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides an airtightness detection device for the production of waterproof materials.

[0005] To achieve the above object, the present invention adopts the following technical solution: An airtightness detection device for the production of waterproof materials, including an air supply mold, a pressing cover is arranged above the air supply mold, docking rings are fixed at both sides of the top of the pressing cover near the edges, a flow splitting component is arranged in the middle of the inner wall of the air supply mold, induction devices are arranged near both sides of the inner wall of the air supply mold, and feedback components are arranged near both sides of the inner wall of the pressing cover;

[0006] A clamping groove is opened near the outer surface edge of the top of the air supply mold, a retaining frame is fixed at the top of the air supply mold, the inner side of the retaining frame is mutually attached to the inner wall of the air supply mold, a frame-shaped groove is opened near the bottom edge of the outer surface of the retaining frame, a rubber frame is fixed near the inner wall edge of the bottom of the pressing cover, the rubber frame is clamped inside the frame-shaped groove, the outer surface of the retaining frame is attached to the inner wall of the pressing cover, and a waterproof film is arranged between the top of the air supply mold and the bottom of the pressing cover.

[0007] Preferably, the flow splitting component includes a reciprocating column, a reciprocating cavity is opened in the middle of the inner wall of the air supply mold, the reciprocating column is slidably connected inside the reciprocating cavity, four air outlet channels are equidistantly opened along the circumferential direction of the inner wall of the reciprocating cavity, and one end of each of the four air outlet channels correspondingly penetrates to the inner bottom surface of the air supply mold and is located at four corners.

[0008] Preferably, an air cavity is formed in the inner wall of the air supply mold at the bottom edge. A guide pipe is fixed to the bottom of the reciprocating column. The bottom of the guide pipe is closed. An inner cavity is formed in the reciprocating column near the top edge. The top of the guide pipe communicates with the inside of the inner cavity. The bottom of the guide pipe slidably penetrates into the air cavity. The top of the reciprocating column slidably penetrates into the inner bottom surface of the air supply mold, and the top of the inner cavity penetrates to the top of the reciprocating column. A plurality of air inlets penetrating to the outside are equidistantly formed in the inner wall of the guide pipe near the bottom edge. A plurality of air outlets are equidistantly formed in the inner wall of the inner cavity along the circumferential direction.

[0009] Preferably, a return spring is fixed to the bottom of the guide pipe. The bottom of the return spring is fixed to the inner bottom surface of the air cavity. An air inlet pipe is fixed to one side of the air supply mold. One end of the air inlet pipe penetrates into the air cavity. Distribution channels are formed in the inner wall of the air supply mold near both sides. One end of each of the two distribution channels correspondingly penetrates into the reciprocating cavity. Second baffle plates are fixed to the outer surfaces of both sides of the reciprocating column near the top edge. The two second baffle plates correspondingly slide and extend into the distribution channels.

[0010] Preferably, the sensing device includes a cylindrical block. A cylindrical cavity is formed in the inner wall of the air supply mold near one side edge. The cylindrical block is slidably connected between the inner walls of the cylindrical cavity. The cylindrical cavity is directly below the card slot. The other side of the distribution channel extends below the cylindrical cavity. Probe rods are fixed to the top and bottom of the cylindrical block. The bottom end of the probe rod at the bottom of the cylindrical block slidably penetrates into the distribution channel. A first baffle plate is fixed to one side of the bottom end of the probe rod at the bottom of the cylindrical block. One side of the first baffle plate extends above one side of the second baffle plate.

[0011] Preferably, the top end of the probe rod at the top of the cylindrical block slidably penetrates into the card slot. A through hole is formed in the outer surface of one side of the cylindrical block near the top edge. The through hole penetrates to the outer surface of the other side of the cylindrical block. A jacking spring is fixed to the bottom of the cylindrical block. The bottom of the jacking spring is fixed to the inner bottom surface of the cylindrical cavity.

[0012] Preferably, an exhaust port penetrating to the inside of one side of the cylindrical cavity is formed in one side of the air supply mold. A flow channel penetrating to the inside of the other side of the cylindrical cavity is formed in the top of the air supply mold. The exhaust port and the flow channel are communicated with each other through the through hole.

[0013] Preferably, the feedback component includes a rectangular frame. A receiving groove is formed in the bottom of the gland near the outer surface edge. A clamping frame is slidably arranged between the inner walls of the receiving groove. Adjusting grooves are formed in the inner walls of the gland near both side edges. A sliding plate is slidably arranged between the inner walls of the adjusting grooves. The rectangular frame is fixed to the bottom of the sliding plate. The bottom of the rectangular frame slidably penetrates into the interior of the receiving groove and is fixed to the top of the clamping frame. A pressing spring is fixed to the top of the sliding plate, and the top of the pressing spring is fixed to the inner top surface of the adjusting groove.

[0014] Preferably, side openings penetrating into the interior of the receiving groove are formed in both inner walls of the gland. A contact plate is slidably arranged between the inner walls of the gland. A guiding plate is slidably arranged between the inner walls of the side openings. One side of the guiding plate extends into the interior of the rectangular frame, and the other side of the guiding plate is fixed to the outer surface of the contact plate.

[0015] Preferably, a limiting frame is fixed between the inner walls of the gland. The top of the limiting frame is in mutual contact with the bottom of the contact plate. The top of the limiting frame is flush with the inner bottom surface of the side opening. Bending openings are formed in the bottom of the gland near the edges of both inner walls. The tops of the two bending openings penetrate into the inner side of the gland and are both located directly below the limiting frame. A scale plate is fixed to the middle of the top of the contact plate, and the top of the scale plate slidably penetrates above the gland.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By providing a flow splitting component, a sensing device and a feedback component, the present invention can evenly blow air to one side of the waterproof film, causing the waterproof film to elastically expand to the other side, thereby detecting whether there is an air leakage phenomenon during the elastic expansion process of the waterproof film within a certain distance range, and can accurately measure the elastic expansion distance of the waterproof film. During measurement, the flow splitting component can evenly blow air to one side of the waterproof film. After the gland is docked with the air supply mold in place, the sensing device can open the flow splitting component to supply gas into the air supply mold. When the waterproof film elastically expands to the maximum test range, the feedback component can reversely trigger the sensing device to cut off the flow splitting component, avoiding continuous air supply to one side of the waterproof film and causing the waterproof film to continue to elastically expand after reaching the maximum test value, resulting in its damage.

[0018] 2. The present invention can evenly blow air flow to one side of the waterproof film by providing a flow splitting component. When the flow splitting component works, as the cylindrical block slides down, it will drive the probe rod at the bottom to slide downward, and then drive the first dial plate to press the second dial plate downward. When the second dial plate slides downward, it will drive the reciprocating column to slide downward from the upper part inside the reciprocating cavity. After the reciprocating column slides downward, one end of the air outlet channel will be communicated with the inner cavity through a plurality of air outlets, and at the same time, it will drive the bottom end of the guiding tube to extend into the air cavity, so that the gas inside the air cavity can enter the guiding tube through the air inlet.

[0019] 3. The present invention can open the flow splitting component to supply gas to the inside of the air supply mold after the gland and the air supply mold are docked in place by providing an induction device. When the induction device works, it presses the probe rod on the top of the cylindrical block downward, driving the cylindrical block to slide downward. After the gland and the air supply mold are docked, the bending port on the gland is communicated with the flow channel on the air supply mold, and the flow channel and the exhaust port are communicated with each other through the through port.

[0020] 4. The present invention can reversely trigger the induction device when the waterproof film elastically expands to the maximum test range by providing a feedback component, so that the flow splitting component is cut off, avoiding continuous supply of air flow to one side of the waterproof film, and preventing the waterproof film from continuing to elastically expand after reaching the maximum test value, resulting in its damage. When the waterproof film continues to expand after reaching the maximum expansion test value, it will push the rectangular frame upward through one end of the guiding plate, and then drive the clamping frame to slide upward from the inside of the clamping groove. Since the clamping frame slides upward, at this time, the pressing force on the probe rod will be released, and at the same time, the pressing of the first dial plate on the second dial plate will be released. Under the elastic force of the return spring, the reciprocating column slides upward, so that the bottom end of the guiding tube slides above the air cavity, cutting off the communication part between the guiding tube and the air cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a side view three-dimensional structure schematic diagram of an airtightness detection device for waterproof material production proposed by the present invention;

[0022] Figure 2 is a sectional three-dimensional structure schematic diagram of an airtightness detection device for waterproof material production proposed by the present invention;

[0023] Figure 3 is a bottom view three-dimensional structure schematic diagram of the gland in an airtightness detection device for waterproof material production proposed by the present invention;

[0024] Figure 4 is a top view three-dimensional structure schematic diagram of the air supply mold in an airtightness detection device for waterproof material production proposed by the present invention;

[0025] Figure 5 is a sectional three-dimensional structure schematic diagram of the gland in an airtightness detection device for waterproof material production proposed by the present invention;

[0026] Figure 6 This is a schematic perspective sectional view of one side of the air supply mold in the airtightness detection device for waterproof material production proposed by the present invention;

[0027] Figure 7 This is a schematic perspective sectional view of the other side of the air supply mold in the airtightness detection device for waterproof material production proposed by the present invention;

[0028] Figure 8 For the present invention Figure 2 Partial enlarged view of A in the figure;

[0029] Figure 9 For the present invention Figure 5 Partial enlarged view of B in the figure;

[0030] Figure 10 For the present invention Figure 6 Partial enlarged view of C in the figure.

[0031] In the figure: 1. Air supply mold; 2. Gland; 3. Docking ring; 4. Card slot; 5. Baffle frame; 6. Air inlet pipe; 7. Scale plate; 8. Storage groove; 9. Card frame; 10. Contact plate; 11. Rubber frame; 12. Limit frame; 13. Frame-shaped groove; 14. Air outlet channel; 15. Distribution channel; 16. First baffle; 17. Second baffle; 18. Waterproof film; 19. Air cavity; 20. Reciprocating cavity; 21. Return spring; 22. Reciprocating column; 23. Inner cavity; 24. Guide pipe; 25. Air inlet; 26. Air outlet; 27. Adjustment groove; 28. Compression spring; 29. Slide plate; 30. Rectangular frame; 31. Side port; 32. Guide plate; 33. Bending port; 34. Cylindrical cavity; 35. Cylindrical block; 36. Through port; 37. Exhaust port; 38. Flow channel; 39. Lifting spring; 40. Probe rod. Detailed implementation method

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1-10, the present invention provides a technical solution: an airtightness detection device for the production of waterproof materials, including a gas supply mold 1, a pressing cover 2 is arranged above the gas supply mold 1, docking rings 3 are fixed at both sides of the top of the pressing cover 2 near the edges, a flow distribution component is arranged in the middle of the inner wall of the gas supply mold 1, induction devices are arranged near both sides of the inner wall of the gas supply mold 1, and feedback components are arranged near both sides of the inner wall of the pressing cover 2;

[0034] A clamping groove 4 is formed at the outer surface edge of the top of the gas supply mold 1, a retaining frame 5 is fixed at the top of the gas supply mold 1, the inner side of the retaining frame 5 is in mutual fit with the inner wall of the gas supply mold 1, a frame-shaped groove 13 is formed at the outer surface near the bottom edge of the retaining frame 5, a rubber frame 11 is fixed at the bottom near the inner wall edge of the pressing cover 2, the rubber frame 11 is clamped inside the frame-shaped groove 13, the outer surface of the retaining frame 5 is in fit with the inner wall of the pressing cover 2, and a waterproof film 18 is arranged between the top of the gas supply mold 1 and the bottom of the pressing cover 2.

[0035] The achieved effect is that by providing a flow distribution component, an induction device and a feedback component, the air flow can be evenly blown to one side of the waterproof film 18, causing the waterproof film 18 to elastically expand to the other side, so as to detect whether there is an air leakage phenomenon during the elastic expansion process of the waterproof film 18 within a certain distance range, and the elastic expansion distance of the waterproof film 18 can be accurately measured. During the measurement, the flow distribution component can evenly blow the air flow to one side of the waterproof film 18, the induction device can open the flow distribution component to supply gas into the gas supply mold 1 after the pressing cover 2 and the gas supply mold 1 are docked in place, and the feedback component can reversely trigger the induction device when the waterproof film 18 elastically expands to the maximum test range, so that the flow distribution component is cut off to avoid continuously supplying air flow to one side of the waterproof film 18 and causing the waterproof film 18 to continue to elastically expand after reaching the maximum test value and resulting in its damage.

[0036] Such as Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 9 and Figure 10As shown in the figure, the induction device includes a cylindrical block 35. A cylindrical cavity 34 is formed in the inner wall of the air supply mold 1 near one side edge. The cylindrical block 35 is slidably connected between the inner walls of the cylindrical cavity 34. The cylindrical cavity 34 is located directly below the card slot 4. The other side of the distribution channel 15 extends to the lower part of the cylindrical cavity 34. Probe rods 40 are fixed to both the top and bottom of the cylindrical block 35. The bottom end of the probe rod 40 located at the bottom of the cylindrical block 35 slides through to the inside of the distribution channel 15. A first baffle 16 is fixed to one side of the bottom end of the probe rod 40 located at the bottom of the cylindrical block 35. One side of the first baffle 16 extends above one side of the second baffle 17. The top end of the probe rod 40 located at the top of the cylindrical block 35 slides through to the inside of the card slot 4. A through hole 36 is formed in the outer surface of one side of the cylindrical block 35 near the top edge. The through hole 36 penetrates to the outer surface of the other side of the cylindrical block 35. A jacking spring 39 is fixed to the bottom of the cylindrical block 35. The bottom of the jacking spring 39 is fixed to the inner bottom surface of the cylindrical cavity 34. An exhaust port 37 is formed in one side of the air supply mold 1 and penetrates to the inside of one side of the cylindrical cavity 34. A flow channel 38 is formed in the top of the air supply mold 1 and penetrates to the inside of the other side of the cylindrical cavity 34. The exhaust port 37 and the flow channel 38 are interconnected through the through hole 36.

[0037] The achieved effect is that when the gland 2 and the air supply mold 1 are docked with each other, the card frame 9 located inside the receiving groove 8 at the bottom of the gland 2 will slide and engage into the inside of the card slot 4, thereby pressing down the probe rod 40 at the top of the cylindrical block 35 and driving the cylindrical block 35 to slide downwards. After the gland 2 and the air supply mold 1 are docked, the bending port 33 on the gland 2 and the flow channel 38 on the air supply mold 1 are interconnected. The flow channel 38 and the exhaust port 37 are interconnected through the through hole 36. At this time, after supplying gas into the air supply mold 1, when there is a leak in the waterproof film 18, the waterproof film 18 will not elastically expand upwards. The gas blown between the waterproof film 18 and the air supply mold 1 flows through the leak on the waterproof film 18 to the space between the top of the waterproof film 18 and the gland 2, then enters the flow channel 38 through the bending port 33, and finally flows into the exhaust port 37 through the through hole 36 and is discharged to the outside. When there is no leak in the waterproof film 18 at the beginning and a leak occurs during the elastic expansion process, the gas generated at this time is exhausted in the same way as when the waterproof film 18 has a leak at the beginning. When the waterproof film 18 has no leak and elastically expands to one side, after reaching the maximum elastic expansion, the feedback component will be triggered to cut off the gas supply component. When the waterproof film 18 expands to one side, it will drive the contact plate 10 to slide upwards, and then drive the scale plate 7 to slide upwards. People can obtain the elastic expansion size of the waterproof film 18 through the numerical change of the scale plate 7.

[0038] Such as Figure 2 、 Figure 4 、 Figure 7 and Figure 8As shown in the figure, the shunt component includes a reciprocating column 22. A reciprocating cavity 20 is formed in the middle of the inner wall of the air supply mold 1. The reciprocating column 22 is slidably connected to the inside of the reciprocating cavity 20. Four air outlet channels 14 are equidistantly arranged along the circumferential direction on the inner wall of the reciprocating cavity 20. One end of each of the four air outlet channels 14 correspondingly penetrates through to the inner bottom surface of the air supply mold 1 and is located at four corners. An air cavity 19 is formed in the inner wall of the air supply mold 1 at the bottom edge. A guide pipe 24 is fixed to the bottom of the reciprocating column 22. The bottom of the guide pipe 24 is closed. An inner cavity 23 is formed in the reciprocating column 22 near the top edge. The top of the guide pipe 24 communicates with the inside of the inner cavity 23. The bottom of the guide pipe 24 slidably penetrates through to the inside of the air cavity 19. The top of the reciprocating column 22 slidably penetrates through to the inner bottom surface of the air supply mold 1, and the top of the inner cavity 23 penetrates through to the top of the reciprocating column 22. A plurality of air inlets 25 penetrating to the outside are equidistantly arranged along the circumferential direction on the inner wall of the guide pipe 24 near the bottom edge. A plurality of air outlets 26 are equidistantly arranged along the circumferential direction on the inner wall of the inner cavity 23. A return spring 21 is fixed to the bottom of the guide pipe 24. The bottom of the return spring 21 is fixed to the inner bottom surface of the air cavity 19. An air inlet pipe 6 is fixed to one side of the air supply mold 1. One end of the air inlet pipe 6 penetrates through to the inside of the air cavity 19. Distribution channels 15 are formed in the inner wall of the air supply mold 1 near both sides. One end of each of the two distribution channels 15 correspondingly penetrates through to the inside of the reciprocating cavity 20. Second baffle plates 17 are fixed to the outer surfaces of both sides of the reciprocating column 22 near the top edge. Both of the two second baffle plates 17 correspondingly slide and extend into the inside of the distribution channels 15.

[0039] The achieved effect is that since the downward sliding of the cylindrical block 35 will drive the probe rod 40 at the bottom to slide downward, thereby driving the first baffle plate 16 to press the second baffle plate 17 downward. When the second baffle plate 17 slides downward, it will drive the reciprocating column 22 to slide downward from the upper part inside the reciprocating cavity 20. Since the reciprocating column 22 is above the reciprocating cavity 20 in the initial state, and one end of the plurality of air outlet channels 14 is located at the lower edge of the reciprocating column 22, so in the initial state, one end of the air outlet channel 14 is closed by the outer surface of the lower part of the reciprocating column 22. After the reciprocating column 22 slides downward, one end of the air outlet channel 14 will be communicated with the inner cavity 23 through a plurality of air outlets 26. At the same time, it will drive the bottom end of the guide pipe 24 to extend into the air cavity 19, so that the gas inside the air cavity 19 can enter the inside of the guide pipe 24 through the air inlets 25. At this time, the air flow can evenly flow from the air outlet channels 14 to the inside of the air supply mold 1 and is distributed at the four corners, so that the air pressure received on one side of the waterproof film 18 is more uniform.

[0040] Such as Figure 2 、 Figure 3 、 Figure 5 and Figure 9As shown, the feedback component includes a rectangular frame 30, a receiving groove 8 is provided at the bottom of the pressure cover 2 near the edge of the outer surface, a card frame 9 is slidably arranged between the inner walls of the receiving groove 8, an adjustment groove 27 is provided at the inner wall of the pressure cover 2 near the edges on both sides, a slide plate 29 is slidably arranged between the inner walls of the adjustment groove 27, the rectangular frame 30 is fixed at the bottom of the slide plate 29, the bottom of the rectangular frame 30 slides through the inside of the receiving groove 8 and is fixed to the top of the card frame 9, a clamping spring 28 is fixed on the top of the slide plate 29, and the top of the clamping spring 28 is fixed to the inner top surface of the adjusting groove 27, side openings 31 are provided on the inner walls of both sides of the pressure cover 2 and penetrate into the inside of the receiving groove 8, and a contact plate is slidably arranged between the inner walls of the pressure cover 2 10, a guide plate 32 is slidably arranged between the inner walls on both sides of the side opening 31, one side of the guide plate 32 extends to the inside of the rectangular frame 30, and the other side of the guide plate 32 is fixed on the outer surface of the contact plate 10, a limit frame 12 is fixed between the inner walls of the pressure cover 2, the top of the limit frame 12 and the bottom of the contact plate 10 are in contact with each other, the top of the limit frame 12 and the inner bottom surface of the side opening 31 are flush with each other, and a bending opening 33 is opened at the bottom of the pressure cover 2 near the edges of the inner walls on both sides, the tops of the two bending openings 33 are both extended to the inner side of the pressure cover 2, and are both located directly below the limit frame 12, and a scale plate 7 is fixed at the middle of the top of the contact plate 10, and the top of the scale plate 7 slides through to the top of the pressure cover 2.

[0041] The effect achieved is that, as the waterproof film 18 expands, the contact plate 10 will slide upward and lift up. After the waterproof film 18 reaches the maximum expansion range, the contact plate 10 will be lifted to a position close to the inner top surface of the gland 2. At the same time, when the contact plate 10 slides upward, it will drive the guide plate 32 to slide upward. At this time, one end of the guide plate 32 is located on the inner top surface of the rectangular frame 30. After the waterproof film 18 reaches the maximum expansion test value, it continues to expand, and the rectangular frame 30 will be pushed upward through one end of the guide plate 32, thereby driving the card frame 9 from the inner side of the card slot 4. Slide upward. As the card frame 9 slides upward, the pressing force on the probe rod 40 will be released. The cylindrical block 35 will slide upward under the elastic force of the lifting spring 39, so that the through-hole 36 is offset relative to the exhaust port 37 and the flow channel 38, and the exhaust port 37 and the flow channel 38 are cut off. At the same time, the pressure of the first shift plate 16 on the second shift plate 17 will be released. Under the elastic force of the return spring 21, the reciprocating column 22 will slide upward, so that the bottom end of the guide tube 24 slides to the top of the air cavity 19, and the connecting part between the guide tube 24 and the air cavity 19 is cut off.

[0042] Working principle: When using this device, place the waterproof film 18 between the gland 2 and the air supply mold 1, and then store the edge of the waterproof film 18 in the frame-shaped groove 13. After the gland 2 and the air supply mold 1 are docked, they are compressed by the rubber frame 11, so that the waterproof film 18 is laid between the gland 2 and the air supply mold 1. When the gland 2 and the air supply mold 1 are docked with each other, the card frame 9 located in the storage groove 8 at the bottom of the gland 2 will slide and snap into the inside of the card groove 4, so that the probe rod 40 at the top of the cylindrical block 35 is pressed downward, driving the cylindrical block 35 to slide downward. After the gland 2 and the air supply mold 1 are docked, the bending port 33 on the gland 2 is connected with the flow channel 38 on the air supply mold 1, and the flow channel 38 and the exhaust port 37 are connected with each other through the through port 36. At this time, after gas is supplied to the air supply mold 1, when the waterproof film 18 has a hole, the waterproof film 18 will not elastically expand upwards, and the gas blown between the waterproof film 18 and the air supply mold 1 flows through the hole on the waterproof film 18 to the top of the waterproof film 18 and the pressure cover 2, and then enters the flow channel 38 through the bending port 33, and finally flows into the exhaust port 37 through the through port 36 and is discharged to the outside. When the waterproof film 18 has no holes at the beginning and a hole is generated during the elastic expansion process, the gas generated at this time is exhausted in the same way as when the waterproof film 18 has a hole at the beginning. When the waterproof film 18 has no holes and elastically expands to one side, it will trigger the feedback component after reaching the maximum elastic expansion to cut off the air supply component, and when the waterproof film 18 expands to one side, it will drive the contact The plate 10 slides upward, thereby driving the scale plate 7 to slide upward. People can obtain the elastic expansion size of the waterproof film 18 through the numerical change of the scale plate 7. As the cylindrical block 35 slides downward, it will drive the bottom probe rod 40 to slide downward, thereby driving the first dial plate 16 to press the second dial plate 17 downward. When the second dial plate 17 slides downward, it will drive the reciprocating column 22 to slide downward from the top inside the reciprocating cavity 20. Since the reciprocating column 22 is above the reciprocating cavity 20 in the initial state, and one end of the multiple air outlets 14 is located at the lower edge of the reciprocating column 22, in the initial state, one end of the air outlet 14 is closed by the lower outer surface of the reciprocating column 22. After the reciprocating column 22 slides downward, one end of the air outlet 14 is connected to the inner cavity 23 through the multiple air outlets 26. The two ends of the guide tube 24 are interconnected, and at the same time, the bottom end of the guide tube 24 is extended to the inside of the air cavity 19, so that the gas inside the air cavity 19 can enter the inside of the guide tube 24 through the air inlet 25. At this time, the air flow can flow evenly from the air outlet 14 to the inside of the air supply mold 1, and is distributed at the four corners, so that the air pressure on one side of the waterproof film 18 is more uniform. Since the waterproof film 18 will slide and lift the contact plate 10 upward after expansion, after the waterproof film 18 reaches the maximum expansion range, the contact plate 10 will be lifted to a position close to the top surface of the inner part of the gland 2. At the same time, when the contact plate 10 slides upward, it will drive the guide plate 32 to slide upward. At this time, one end of the guide plate 32 is located on the inner top surface of the rectangular frame 30, and continues to expand after the waterproof film 18 reaches the maximum expansion test value.It will push the rectangular frame 30 upward through one end of the guide plate 32, and then drive the clamping frame 9 to slide upward from the inside of the clamping groove 4. Since the clamping frame 9 slides upward, the pressing force on the probe rod 40 will be released at this time. Under the elastic force of the jacking spring 39, the cylindrical block 35 slides upward, so that the through port 36 is misaligned with the exhaust port 37 and the flow channel 38 relatively, cutting off the exhaust port 37 and the flow channel 38. At the same time, the pressing of the first dial 16 on the second dial 17 will be released. Under the elastic force of the return spring 21, the reciprocating column 22 slides upward, so that the bottom end of the guide tube 24 slides above the air chamber 19, cutting off the communication part between the guide tube 24 and the air chamber 19.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air tightness detection device for waterproof material production, characterized in that: It comprises an air supply mold (1), a pressure cover (2) is arranged above the air supply mold (1), a docking ring (3) is fixed to the top of the pressure cover (2) near the edges on both sides, a flow diversion component is arranged in the middle of the inner wall of the air supply mold (1), a sensing device is arranged on the inner wall of the air supply mold (1) near the edges on both sides, and a feedback component is arranged on the inner wall of the pressure cover (2) near the edges on both sides; A slot (4) is provided at the top of the air supply mold (1) near the edge of the outer surface, a retaining frame (5) is fixed at the top of the air supply mold (1), the inner side of the retaining frame (5) is in contact with the inner wall of the air supply mold (1), a frame-shaped slot (13) is provided at the outer surface of the retaining frame (5) near the bottom edge, a rubber frame (11) is fixed at the bottom of the pressure cover (2) near the edge of the inner wall, the rubber frame (11) is engaged in the frame-shaped slot (13), the outer surface of the retaining frame (5) is in contact with the inner wall of the pressure cover (2), and a waterproof film (18) is provided between the top of the air supply mold (1) and the bottom of the pressure cover (2).

2. The air tightness detection device for waterproof material production according to claim 1, characterized in that: The flow distribution component comprises a reciprocating column (22), a reciprocating cavity (20) is provided in the middle of the inner wall of the air supply mold (1), the reciprocating column (22) is slidably connected inside the reciprocating cavity (20), and the inner wall of the reciprocating cavity (20) is provided with four air outlets (14) at equal intervals along the circumferential direction, one end of each of the four air outlets (14) passes through the inner bottom surface of the air supply mold (1) and is located at four corners.

3. The air tightness detection device for waterproof material production according to claim 2, characterized in that: The inner wall of the air supply mold (1) is provided with an air cavity (19) at the bottom edge, a guide tube (24) is fixed at the bottom of the reciprocating column (22), the bottom of the guide tube (24) is closed, an inner cavity (23) is provided near the top edge of the reciprocating column (22), the top of the guide tube (24) is connected to the inside of the inner cavity (23), the bottom of the guide tube (24) slides through the inside of the air cavity (19), the top of the reciprocating column (22) slides through the inner bottom surface of the air supply mold (1), and the top of the inner cavity (23) penetrates to the top of the reciprocating column (22), the inner wall of the guide tube (24) is provided with a plurality of air inlets (25) equidistantly extending to the outside near the bottom edge, and the inner wall of the inner cavity (23) is provided with a plurality of air outlets (26) equidistantly along the circumferential direction.

4. The air tightness detection device for waterproof material production according to claim 3, characterized in that: A return spring (21) is fixed to the bottom of the guide tube (24), and the bottom of the return spring (21) is fixed to the inner bottom surface of the air cavity (19). An air inlet pipe (6) is fixed to one side of the air supply mold (1), and one end of the air inlet pipe (6) penetrates into the interior of the air cavity (19). The inner wall of the air supply mold (1) is provided with distribution channels (15) near both sides, and one end of the two distribution channels (15) correspondingly penetrates into the interior of the reciprocating cavity (20). Second shift plates (17) are fixed to the outer surfaces of both sides of the reciprocating column (22) near the top edge, and the two second shift plates (17) correspondingly slide and extend into the interior of the distribution channels (15).

5. The air tightness detection device for waterproof material production according to claim 4, characterized in that: The sensing device comprises a cylindrical block (35). A cylindrical cavity (34) is provided on the inner wall of the air supply mold (1) near one side edge. The cylindrical block (35) is slidably connected between the inner walls of the cylindrical cavity (34). The cylindrical cavity (34) is located directly below the card slot (4). The other side of the distribution channel (15) extends to the bottom of the cylindrical cavity (34). Probe rods (40) are fixed to the top and bottom of the cylindrical block (35). The bottom end of the probe rod (40) located at the bottom of the cylindrical block (35) slides through the inside of the distribution channel (15). A first dial plate (16) is fixed to one side of the bottom end of the probe rod (40) located at the bottom of the cylindrical block (35). One side of the first dial plate (16) extends to the top of one side of the second dial plate (17).

6. The air tightness detection device for waterproof material production according to claim 5, characterized in that: The top end of the probe rod (40) located at the top of the cylindrical block (35) slides through the interior of the slot (4), a through hole (36) is provided on one side of the outer surface of the cylindrical block (35) near the top edge, and the through hole (36) penetrates to the other side of the outer surface of the cylindrical block (35), and a lifting spring (39) is fixed at the bottom of the cylindrical block (35), and the bottom of the lifting spring (39) is fixed to the inner bottom surface of the cylindrical cavity (34).

7. The air tightness detection device for waterproof material production according to claim 6, characterized in that: An exhaust port (37) is provided on one side of the air supply mold (1) and penetrates into the interior of one side of the cylindrical cavity (34); a flow channel (38) is provided on the top of the air supply mold (1) and penetrates into the interior of the other side of the cylindrical cavity (34); the exhaust port (37) and the flow channel (38) are connected to each other via a through port (36).

8. The air tightness detection device for waterproof material production according to claim 7, characterized in that: The feedback component comprises a rectangular frame (30), a receiving groove (8) is provided at the bottom of the pressure cover (2) near the edge of the outer surface, a card frame (9) is slidably arranged between the inner walls of the receiving groove (8), an adjustment groove (27) is provided on the inner walls of the pressure cover (2) near the edges on both sides, a slide plate (29) is slidably arranged between the inner walls of the adjustment groove (27), the rectangular frame (30) is fixed at the bottom of the slide plate (29), the bottom of the rectangular frame (30) slides through the inside of the receiving groove (8) and is fixed at the top of the card frame (9), a clamping spring (28) is fixed at the top of the slide plate (29), and the top of the clamping spring (28) is fixed to the inner top surface of the adjustment groove (27).

9. The air tightness detection device for waterproof material production according to claim 8, characterized in that: The inner walls on both sides of the pressure cover (2) are provided with side openings (31) that penetrate into the interior of the storage groove (8); a contact plate (10) is slidably arranged between the inner walls of the pressure cover (2); a guide plate (32) is slidably arranged between the inner walls on both sides of the side opening (31); one side of the guide plate (32) extends to the interior of the rectangular frame (30), and the other side of the guide plate (32) is fixed on the outer surface of the contact plate (10).

10. The air tightness detection device for waterproof material production according to claim 9, characterized in that: A limit frame (12) is fixed between the inner walls of the pressure cover (2), the top of the limit frame (12) fits with the bottom of the contact plate (10), the top of the limit frame (12) is flush with the inner bottom surface of the side opening (31), the bottom of the pressure cover (2) is provided with bending openings (33) near the edges of the inner walls on both sides, the tops of the two bending openings (33) pass through the inner side of the pressure cover (2) and are located directly below the limit frame (12), a scale plate (7) is fixed in the middle of the top of the contact plate (10), and the top of the scale plate (7) slides through to the top of the pressure cover (2).

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